US3432631A

US3432631A - Alarm and safety lock device

Info

Publication number: US3432631A
Application number: US602995A
Authority: US
Inventors: Abe Deutscher; Vincent H Muttart; Jack W Gilbert
Original assignee: Abe Deutscher
Current assignee: EMERGENCY PRODUCTS Corp 25 EASTMANS RD PARSIPPANY NJ
Priority date: 1966-12-19
Filing date: 1966-12-19
Publication date: 1969-03-11
Anticipated expiration: 1986-03-11

Description

March 11, 1969 A. DE'IUTSCHER ET AL 3,432,631

ALARM AND SAFETY LOCK DEVICE Filed Dec. 19. 1966 Sheet III]. I

INVENTOEE ABE Dsurscmsvz,

Hum

VINCENT M MurTA/w; JA CK W GILBERT & HORNBAKER ATTORNEYS MTV/ A. DEUTSCHER ET AL 3,432,631

ALARM AND SAFETY LOCK DEVICE March 11, 1969 Off Sheet Filed Dec. 19, 1966 w e R r E Wm B NM mm M Ma VUH Hw W T A} UN yr 5 Am M M March 11, 1969 A, DEUTSCHER ET AL 3,432,631

ALARM AND SAFETY LOCK DEVICE Filed Dec. 19, 1966 Sheet 4 of 5' /N VENTOES 75 Ass 'Dsursci/se, V/NcEA/TH. Mu7'7AR7;

JACK 14/. 611.5527 66 I 26 MAHm/E/ 8.- HORNBAKER 76 70 26 ATTOQA/EYS United States Patent 0 3,432,631 r ALARM AND SAFETY LOCKDEVICE Abe Deutscher, 8306 Edgerton Blvd., Jamaica, N.Y. 11432, and Vincent H. Muttart, Placentia, and Jack W. Gilbert, Newport Beach, Calif.; said Muttart and said Gilbert assignors to said Deutscher Filed Dec. 19, 1966, Ser. No. 602,995 US. Cl. ZOO-61.67 26 Claims Int. 'Cl. H01h 27/06, 9/28 This invention relates to an alarm and safety lock device of the type normally used for auxiliary doors of stores and public and commercial buildings wherein it is necessary to provide a locked door which may be quickly opened from the inside thereof during an emergency and without the need for unlocking the same with the actual use of keys and the like. At the same time, the locking device for such a door must be arranged with automatic alarm means such that when the door is opened in the emergency situation and without the use of keys for unlocking the same, said alarm means will automatically sound to indicate that said door has been opened, thereby preventing the surreptitious exit through said door or the a passing of valuable contraband therethrough. Still at the same time, it is desirable to provide key unlocking means in said device in order that said door may be opened without sounding said alarm means by the use of said keys by authorized personnel.

Various prior constructions of locking devices of the foregoing character have been provided and such prior looking devices have normally included a door locking bolt movable between extended locking and retracted unlocking positions through a keyed bolt actuating arrangement, and also movable from bolt extended to bolt retracted position through a second bolt actuating arrangement which is freely operable merely through pressure applied thereagainst, the latter thereby satisfying the need for providing emergency exit; Some form of alarm soundduring movement of said bolt-from said bolt extended to retracted position by said keyed bolt actuating arrangement. r

To our knowledge, all of said prior lock devices satisfying the requirements set forth have been extremely complicated in nature and, therefore, relatively expensive;

to construct and'provide. In addition, many of said locking devices have not been constructed for the necessary foolproof operation. Obviously, if the locking device is to properly serve the intended purpose, it must be constructed for positively sounding an alarm during emergency or surreptitious unlocking of the door, otherwise, there is the possibility of violating the locking device without said alarm sounding and Without. the use of keysrresulting in a frustration of the entire purpose of the same.

Another major lack and difiiculty with the prior locking devices of the foregoing character is occasioned by the fact that necessarily once the bolt has been retracted by operation of the emergency bolt actuating arrangement, said bolt must remain retracted despite release of said emergency bolt actuating arrangement in order that the door may be opened thereafter for the emergency exit of further personnel. This results in thesituation that 3,432,631 Patented Mar. 11,

once the door has been opened by the emergenCY bolt actuating arrangement, there is nothing to positively retain said door closed, and if said doonis to act as a true fire door, it must be positively retained closed at all times. It is true that this requirement could be satisfied by the mere provision of a separate doorknob actuated spring door latch, but in an emergency situation and during the initial emergency unlocking of the door, such would require a person to first actuate the emergency bolt actuating arrangement for retracting the 'bolt and then separately operate the spring door latch through turning of said d'oorknob, such required dual operation obviously being prohibitive in an emergency situation.

It is, therefore, an object of our invention to provide performing the various required functions thereof in virtually a foolproof manner, far superior to that ofthe prior constructions. Unique cam arrangementslare provided associated with the keyed and emergency bolt acting arrangementswherein it is impossible to-actuate the alarm sounding means during movement of the bolt by the keyed bolt actuating means. At the same time, said alarm sounding means is operably associated with said bolt movement such that it is impossible to move the said bolt from bolt extended to retracted position by the emergency bolt actuating means without actuating said alarm sounding means to operate the alarm.

It is another object of our invention to provide an alarm and safety lock device of the foregoing character wherein, once the alarm sounding means has been actuated to operate the alarm, said alarm sounding means is positively retained in said alarm operating position and it is impossible for said alarm sounding means to return to a position in which said alarm is not sounded as long as said bolt remains in the retracted position. The operable connection between the alarm sounding means and the bolt is such that as the bolt is moved from bolt extended to retracted position, not only is said alarm sounding means actuated to sound the alarm by such movement, but simultaneously, the bolt in moving toward and into bolt retracted position, moves into a position completely physically blocking said alarm sounding means from moving back to its original position in which the alarm is not operated. Thus, the alarm sounding means must remain in alarm sounding position until the bolt is moved back to the bolt extended position, which canonly be accomplished by use of the keyed bolt actuating arrangement.

It is still a further object of our invention to provide an alarm and safety lock device of the foregoing character wherein the bolt is positively blocked in each of its extended and retracted positions when placed in said positions by the keyed bolt actuating arrangement, thereby guarding said bolt against surreptitious attack in an attempt to move said bolt from bolt extended to retracted position without the use of either of the keyed or emergency bolt actuating arrangements, and guard said bolt against accidental movement from bolt retracted to .extended position unless purposely placed insaid extended position by said keyed bolt actuating arrangement.

It is preferred that such bolt blocking will be accomplished by' arra'nging the alarm sounding means serving'a dual function, one of sounding the alarm when the bolt is retracted by the emergency bolt actuating arrangement and the other of moving into positive engagement with the bolt in either of the bolt extended or retracted positions when said bolt is moved by the keyed bolt actuating arrangement. In such case, the alarm sounding means may be operably associated with the keyed bolt actuating arrangement so that said keyed bolt actuating arrangement will automatically move said alarm sounding means out of said positive engagement with the bolt directly prior to the movement of said bolt from either of the bolt extended or retracted positions by said keyed bolt actuating arrangement and will bev automatically moved back into said positive bolt engagement at the end of said bolt movement to either of said positions by said keyed bolt actuating arrangement.

It is also an additional object of our invention to provide an alarm and safety lock device of the foregoing character having an auxiliary spring latch operably connected directly therewith and actionable between extended and retracted positions by said emergency bolt actuating arrangement. Said auxiliary latch is associated with said emergency bolt actuating arrangement so that said auxiliary latch is moved from extended to retracted position upon pressure being applied to said auxiliary bolt actuating arrangement for movement of the bolt from extended to retracted position with the simultaneous sounding of the alarm, said auxilary latch automatically moving back. to extended position upon the release of said emergency bolt-actuating arrangement. In this manner, an auxiliary latch is provided for the door with which the lock device of the present invention is mounted and will positively retain said'door in the closed position despite the fact that .present invention mounted on a representative door;

FIG. 2 is an enlarged, fragmentary, front elevational view of the lock device of FIG. 1, with the front portion of the cover removed and in section to shown the internal parts of the lock device, the bolt and auxiliary latch of said device being in extended positions;

FIG. 3 is a reduced, horizontal, sectional view taken along the broken line 3-3 in FIG. 2;

FIG. 4 is a vertical, sectional view taken along the ,broken line 4-4 in FIG. 2;

FIG. 5 is a fragmentary, vertical, sectional view taken along the broken line 55 in FIG. 2;

FIG. 6 is a fragmentary, vertical, sectional view taken along the broken line 66 in 'FIG. 5;

FIG. 7 is a horizontal,'sectional view taken alOng the broken line 77 in FIG. 2 and showing the lock device with the bolt and auxiliary latch in extended positions and engaged with a doorjamb retaining the door in closed position;

FIG. 8 is a view similar to FIG. 7 without the door or doorjamb and showing the bolt partially retracted through operation of the emergency bolt actuating arrangement;

FIG; 9 is a view similar to FIG. 8 with the bolt in fully retracted position through full depression of the emergency bolt actuating arrangement;

keyed bolt actuating arrangement without the sounding of the alarm; and

FIGS. 4 through 18 are reduced, vertical, sectional views taken alongthe broken line 1414 in FIG. 5 and showing the sequence operation of the cam means operably associated between the keyed bolt actuating arrangement and the bolt, as well as between the keyed bolt actuating arrangement and the alarm actuating means, moving said bolt from extended to retracted position without operation of said alarm actuating means.

Referring to the drawings, and partiuularly FIGS. 1 through 4 thereof, the embodiment of the alarm and safety lock device of the present invention includes a base or frame, generally indicated at 20, having a sheet metal cover 22 and supporting a bolt, generally indicated at 24, a first or keyed bolt actuating means, generally indicated at 26, a second or emergency bolt actuating means, generally indicated at 28, an alarm sounding or actuating means, generally indicated at 30 for actuating alarm horns 32, and an auxiliary latch, generally indicated at 34. All of the components of said lock device may be formed of conventional materials and by conventional fabricating procedures, all well known to those skilled in the art. Furthermore, the lock device is supported by the base 20 on an inside surface of a conventional door 36 positioned for engagement of the bolt 24 and the auxiliary latch 34 transversely into a doorjamb 38 when said door is in the closed position and said bolt and latch are in the extended positions.

As shown in the drawings, the bolt 24 is slidably mounted on the base 20 for movement between an extended and retracted position, said bolt including an end portion 40 projecting from the base 20 and engageable in the doorjamb 38 when said bolt is in extended position and substantially withdrawn into said base 20 when said bolt is in retracted position. The bolt end portion 40 may include recesses 41 on the opposite faces thereof for reducing the sliding friction with doorjamb 38. The bolt 24 further includes a cam member or portion 42 integrally connected to said bolt end portion 40 and terminating space from said bolt end portion in a bolt slotted portion 44. The bolt cam portion 42 is formed with substantially identical and aligned front and rear, generally T-shaped cam slots 46, said cam slots each having a T top portion extending parallel to the path of slidable movement of the bolt 24 and forming extended and retracted'dwell

parts

48 and 50, and having a transverse T leg portion forming a bolt moving part 52.

'Still further, the bolt 24 includes acam connecting roller 54 mounted in and near the extremity of the bolt slotted portion 44, as best seen in FIGS. 3 and 7 through 9. Said cam contacting roller 54 is for engagement by the emergency bolt actuating means 28, as will be hereinafter more clearly described. The bolt 24 also is formed with a bolt blocking slot 56 in the bolt end portion 40 aligned for engagement by a part of the alarm actuating means 30 when the bolt is moved into retracted position by the keyed bolt actuating means 26, as will likewise be hereinafter more clearly described.

Referring particularly to FIGS. 2 through 7, the keyed bolt actuating means 26 generally forwardly and rearwardly overlies and underlies the bolt cam portion 42 and includes rotatable cam follower plates 58 having cam followers 60 engaged in the bolt cam slots 46, rotatable cam plates 62, center shafts 64 engaged for rotating said

plates

58 and 62, and a keyed lock cylinder 66 engaged for rotating the front center shaft 64. The lock cylinder 66 is mounted in a lock housing 68 for rotationby a key, not shown, wherein rotation of said cylinder by said key will in turn rotate the forward of said cam follower and

cam plates

58 and 62 through the forward of the center shafts 64. The rearward of the cam follower plates 58, the cam follower 60, the cam plates 62 and the center shafts 64 are not used in the particular mounting of the lock device as shown herein, but are for the purpose of keyed actuation of the bolt 24 where a keyed lock cylinder, not shown, is provided projecting rearwardly through the door 36.

A complete detaileddescription of the operation of the keyed bolt actuating means 26 will be set forth hereinafter in describing the overall operation of the lock device. For the moment, it is suff cient to state that the purpose of the keyed bolt actuating means 26 is for the keyed movement of the bolt 24 between the bolt extended and retracted position without operation of the alarm actuating means 30 to actuate the alarm horns 32. Use of the keyed bolt actuating means 26 will, therefore, permit authorized locking and unlocking of the door 36.

Referring particularly to FIGS. 2, 3 and 7 through 10, the emergency bolt actuating means 28 principally forwardly overlies the bolt slotted portion 44 and extends from the base forwardly overlying the front surface of the door 36, the latter being shown in FIG. 1. Furthermore, the emergency bolt actuating means 28 includes a pressure bar 70 which may be secured to the back surface of a hand bar '72, both said bars extending at all times substantially parallel to the surface of the door 36,, as will be hereinafter more fully explained. The end of the hand bar 72 spaced from the base 20 may be housed in a bar cover 74, said cover being secured to the door 36 and the hand bar being freely movable relative to said bar cover.

The end of the pressure bar 70 toward the bolt 24 is movably mounted on the base 20 by spaced pairs of

pivot links

76 and 78, each pair including an upper and lower pivot link straddling the bolt slotted portion 44. All of said pivot links 76 and 78 are parallel angling rearwardly from the pressure bar 70 to the base 20, being pivotally connected at the ends to the pressure bar and base, respectively. Thus, the pivot links 76- and 78 mount the pressure barmovable rearwardly toward 1 and forwardly away from the base 20' and the front surface of thedoor 36 while said pressure bar remains parallel to the door surface in the manner shown in FIGS. 7 through 10, that is, assuming the extension of the pressure bar 70, as shown in FIG. 7 to be in a reference plane, said pressure bar remains parallel at all times to said reference plane despite movement rearwardly and forwardly relative thereto, although during said movement, said pressure bar also moves in a lengthwise direction parallel to the movement of the bolt 24 toward and away from the previously mentioned bar cover 74.

A compression spring 80 is engaged between the lower of the pivot links 78 and the base 20, resiliently urging the pressure bar 70 always toward its forwardmost position spaced a maximum distance from the base and thereby resiliently returning the pressure bar to its forwardmost position when said pressure bar is moved rearwardly closer to the base and released. A blocking lever 82 is mounted on the uppermost of the pivot links '76 and extends from said pivot link overlying and adjacent the bolt 24, having a notched end 84 for a purpose to be hereinafter described. Furthermore, a cam lever 86 having an angled cam surface 88 is secured to the back surface of the pressure bar 70, said cam surface being eugageable with the bolt cam contacting roller 54 when the bolt 24 is extended and the pressure bar is moved rearwardly and while the rearward end of said cam lever progressively enters the base slot 90.

As previously alluded to, the operation of the emergency bolt actuating means 28 and functioning of the various of the pressure bar 70, the blocking lever 82 and the cam lever 86 will be clearly described in the overall operation of the lock device of the present invention. At the moment it is'sufiicient to state that the blocking lever 82 and the cam lever 86 move exactly with the parallel movement of the pressure bar70 during movement of said pressure bar toward and away from the base 20.

The alarm actuating means is mounted on the base 20 adjacent and extending up from the bolt 24, as best seenin FIGS. 2, 4, 5, 11 and 13 through 18. As shown, the alarm actuating means 30 includes a vertically movable cam slide 92, slidably mounted on the base 20 and having a spaced pair of cam follower end portions 94 straddling the bolt 24 and bearing edgewise against the cam plates 62 of the keyed bolt actuating means 26 previously described.

An alarm actuating lever 96, generally inverted L- shaped in configuration, is pivotally mounted on the cam slide 92 pivotal between an alarm nonactuating position shown in FIGS. 2 and 13 through 18 and an alarm actuating position shown in FIG. 11. The alarm actuating lever 96 is formed with a bolt engagement leg portion 98 and a switch engagement leg portion 100, said bolt engagement leg portion being engageable with the bolt 24 and said switch engagement leg portion being engageable with a depressible switch pin 102 of an alarm switch 104.

The cam slide 92 is resiliently urged downwardly toward the bolt 24 by a compression spring 106- between said cam slide and the base 20 so as to resiliently urge the cam follower end portions 94 into contact with and riding against the cam plates 62 of the keyed bolt actuating means 26. A positioning plunger 108 is also resiliently urged downwardly by the compression spring 106-, with said plunger bearing against the surface of the switch engagement leg portion 100 of the alarm actuating lever 96, thereby normally urging said alarm actuating lever to pivot into the alarm nonactuating position.

Thus, the cam slide 92 is controlled slidably movable toward and away from the bolt 24 by the cam follower end portions 94 thereof in contact with the cam plates 62 of the keyed bolt actuating means 26 and said cam .slide forms a carriage for the alarm actuating lever 96,

moving said actuating lever upwardly and downwardly relative to the bolt with said cam slide. When the cam slide or lever carriage 92 is in its maximum downward position toward the bolt 24, the bolt engagement leg portion 98 of the lever 96 is in interference with the bolt 24 so that with said lever in the alarm nonactuating position and the bolt in the extended position, as shown in FIGS. 2, 7 and 14, said bolt engagement leg portion 98 of said lever 96 is received downwardly in interference with a bolt blocking surface 110 formed on said bolt 24 intermediate the bolt cam portion 42. Furthermore, with the pressure bar of the emergency bolt actuating means 28 in its unrestrained forwardmost position a maximum distance from the base 20, the blocking lever 82 is positioned with the notched end 84 thereof engaged with said bolt engagement leg portion 98 of the lever 96 to block said lever against pivotal movement from its alarm nonactuating position to its alarm actuating position and simultaneously blocking the bolt in said extended position and against movement to retracted position.

When the bolt 24 is in retracted position, as best seen in FIGS. 13 and 18, and the alarm actuating lever 96 is in alarm nonactuating position, with the cam slide or lever carriage 92 in its downward position, the bolt engagement leg portion 98 of the lever 96 is received in the bolt blocking slot 56 of the bolt 24. As shown, for instance, in FIG. 18, since a restraining member 112 on the cam slide 92 prevents the alarm actuating lever 96 from pivoting clockwise beyond the lever alarm nonactuating position, as viewed in FIG. 18, the bolt engagement leg portion 98 of the lever 96 when engaged in the bolt blocking slot 56 will prevent said bolt from moving out of retracted position toward the extended position thereof. In the position described, therefore, the alarm actuating lever 96 blocks the bolt 24 in the retracted position of said bolt.

Due to the particular configuration of the switch engagement leg portion of the alarm actuating lever 96, as shown, when said lever is in the alarm nonactuating position, as shown, for instance, in FIGS. 2 and 13, said lever will always be engaged with the switch pin 102 of the alarm switch 104, retaining said pin depressed and despite upward and downward movement of the cam slide or lever carriage 92 carrying said lever upwardly and downwardly. When, however, the alarm actuating lever 96 is pivoted counterclockwise to the alarm actuating position, as shown, for instance, in FIG. 11, the switch engagement leg portion 100 of said lever moves away from the switch pin 102 of the alarm switch 104, permitting said switch pin to extend from the alarm switch, being resiliently urged into such extended position. The alarm switch 104 is a normally on switch so as to be on when the switch pin 102 is extended and off when said switch pin is depressed, and said alarm switch is electrically connected through the batteries 14 to the alarm horns 32, as shown in FIG. 2, for sounding said alarm horns when said switch is on.

The auxiliary latch 34 is mounted on the base downwardly adjacent the bolt 24 and includes a pivotally mounted latch mmeber 116 pivotally movable between an extended position, as shown, for instance, in FIGS. 2, 12 and 13, and a retracted position shown, for instance, in FIG. 11. As shown in FIG. 12, the latch member 116 is controlled in said pivotal movement by a connecting link 118 pivotal on said latch member and pivotal on the lower of the pivot links 76 of the emergency bolt actuating means 28. The pivotal connection of the connecting link 118 to the pivot link 76 is through a slot 120 and a compression spring 122 so that the latch member 116 may be pivoted inwardly from its extended to its reltra oted position by an outside force without movement of the emergency bolt actuating means 28, while at the same time, inward movement or depression of the pressure bar 70 of the emergency bolt actuating means will move the latch member 116 inwardly from extended to retracted position through said pivot link '76, although otherwise, the latch member is normally resiliently urged to extended position by the compression spring 122.

In operation of the lock device of the present invention, the movement of the bolt 24 by the keyed bolt actuating means 26 is shown in sequence in FIGS. 14 through 18 for moving said bolt from the extended to the retracted position, the reverse movement being merely the exact opposite sequence. As shown in FIG. 14, the bolt 24 is in fully extended position, the cam slide or lever carriage 92 is in its downward position, with the bolt engagement leg portion 98 of the alarm actuating lever 96 blocking against the bolt blocking surface 110 of said bolt-and the cam followers 60 at the extremities of the extended dwell parts 48 in the bolt cam slots 46. Furthermore, the alarm actuating lever 96 is in the alarm nonactuating position so as to maintain the switch pin 102 of the alarm switch 104 depressed and said switch in off position, as described above.

Rotation of the keyed lock cylinder 66 begins rotation of the outermost of the cam plates 62 and circular movement of the outermost of the cam followers 60 through the center shaft 64 connected to said lock cylinder. Initial movement of the cam follower 60 through the extended dwell portion 48 of the cam slot 46 has no moving effect on the bolt 24, but the rotation of the cam plate 62 through the cam surface thereof does move the cam slide 92 upwardly through the cam follower end portion 94, as shown in FIG. 15. Upward movement of the cam slide 92 moves the alarm actuating lever 96 upwardly, sliding along the switch pin 102 of the alarm switch 104 so as to still maintain said switch off and also withdraw the bolt engagement leg portion 98 of the lever 96 upwardly to disengage the bolt 24.

At the point shown in FIG. 15, the cam slide 92 has been moved fully upwardly so that the alarm actuating lever 96 clears the bolt- 24 and the cam follower 60 is' just beginning to fully engage in the bolt moving part 52 of the bolt cam slot 46. Continued rotation of the cam plate 62 will continue to maintain the cam slide 92 and the alarm actuating lever 96 in their maximum upward position, but continued circular movement of the cam follower 60 in the bolt moving part 52 of the bolt cam slot 46 will force the bolt from extended toward retracted position, as shown in FIG. 16, with the bolt in an intermediate position between extended and retracted. As shown in FIG. 17, the bolt 24 has finally been moved to fully retracted position and the cam follower 60 is just ready to move out of the bolt moving part 52 of the bolt cam slot 46, while the cam plate 62 is still maintaining the cam slide 92 and the alarm actuating lever 96 in their fully upward position.

Finally, with the bolt 24 having reached fully retracted position, as moved by the cam follower 61), said cam fol lower begins to move into the retracted dwell part 50 of the bolt cam slot 46 so that said bolt is no longer moved thereby, while the continued rotation of the cam plate 62 lowers the cam slide 92 and the alarm actuating lever 96 downwardly engaging the bolt engagement leg portion 93 of said lever in the bolt blocking slot 56 to block said bolt in its retracted position. Such latter positioning of the various components is shown in FIG. 18, with the cam follower 60 having reached the end of its movement at the extremity of the retracted dwell part 50 of the cam slot 46 and the alarm actuating lever 96 being engaged with the bolt 24. As previously stated, extension of the bolt'24 through the keyed bolt actuating means 26 is exactly the opposite of that just described, with the cam follower 60 moving just reversely sequentially through the various parts of the bolt cam slot 46 and the cam slide 92 and alarm actuating lever 96 being raised up wardly by the cam plate 62 during the movement of the bolt 24 by the circular movement of the cam follower, finally returning to the bolt extended position, as shown in FIG. 14.

Thus, through the action of the keyed bolt actuating means 26, the bolt 24 may be moved between extended and retracted positions without pivoting the alarm actuating lever 96 and, therefore, maintaining the alarm switch 104 in off position. Furthermore, the bolt 24 is maintained blocked in extended position by the alarm actuating lever 96 engaging the bolt blocking surface 110, while said alarm actuating lever is blocked against pivoting by the notched end 84 on the blocking lever 82 of the emergency bolt actuating means 28. Still further, the bolt 24 is blocked in retracted position by the engagement of the alarm actuating lever 96 in the bolt blocking slot 56, said alarm actuating lever being prevented from rotating clockwise by restraining member 112 on the cam slide 92. Once the bolt 24 has been moved into fully retracted position by the keyed bolt actuating means 26, the door 36 may be opened merely by pressing the hand bar 72 to depress the pressure bar 70, causing the auxiliary latch 34 to move from extended to retracted position. With the bolt 24 having been moved to retracted position by the keyed bolt actuating means 26, the only consequence of depressing the pressure bar 70 of the emergency bolt actuating means 2 8 is such Withdrawal ofv the latch member 116 of the auxiliary latch 34, that is, there is no sounding of any alarm.

Assume, however, that the bolt 24 is in fully extended locking position, locking the door 36 closed. and an emergency arises where it necessary to open the door by someone not having a key and, therefore, not being able to operate the keyed bolt actuating means 26. Such person applies pressure to the hand bar 72 and, therefore, to the pressure bar 70, tending to move said pressure bar inwardly toward the base 20. Such inward movement of the pressure bar 70 starting in the position shown in FIG. 7 will immediately pivot the blocking lever 82 of the emergency bolt actuating means 28 outwardly away from blocking the alarm actuating lever 96, immediately after which, the cam lever 86 on the pressure bar will contact the cam contacting roller 54 on the bolt slotted portion 44.

Still continued inward movement or depression of the pressure bar 7 6 will cause the bolt cam contacting roller 54 to move along the cam surface 88 of the presssure bar cam lever 86, sliding the bolt 24 from extended position shown in FIG. 8 to retracted position shown in FIG. 9. At the same time, since the pressure bar blocking lever 82 has moved away from blocking the alarm actuating lever 96, and since said alarm actuating lever is engaged with the bolt blocking surface 110, movement of the bolt from the extended to the retracted position will cause the bolt to pivot the alarm actuating lever 96 in a counterclockwise direction from the position shown in FIG. 2 to the position shown in FIG. 11, thereby causing the alarm actuating lever to pivot away from the switch pin 102 of the alarm switch 104 so that said alarm switch moves to the on position, sounding the alarm horns 32. Movement of the bolt 24 from extended to retracted position is permitted by the cam follower 60 of the keyed bolt actuating means 26, even though cam followers remain stationary since the extended and retracted dwell

parts

48 and 50 of the bolt cam slots 46 are aligned in the direction of movement of the bolt and said movement of the bolt from extended to retracted position merely shifts the cam followers from the extremities of the extended dwell parts 48 into the extremities of the retracted dwell parts 50.

At the same time of retracting the bolt 24, the inward movement of the pressure bar 70 also retracts the latch member 116? of the auxiliary latch :34 through the connecting link 118. Thus, both the bolt 24 and the auxiliary latch 34 have been retracted, while the alarm has been sounded, so that the door is unlocked and may be pushed open for emergency exit. Through the mechanism described, however, the door 36 cannot be unlocked and opened through the emergency bolt actuating means 28 without sounding the alarm, so that it is always known when said door is unlocked by someone not using the I keyed bolt actuating means 26. It will be noted that .the reason the alarm actuating lever 96 is pivoted to the alarm actuating position by the movement of the bolt 24 from extended to retracted position by the emergency bolt actuating means 28 is that there is no upward movement of the cam slide or lever carriage 92 prior to said bolt movement so that the engagement between the bolt and the alarm actuating leverpivots the alarm actuating lever and causes the bolt engagement leg portion 98 to slide along the upper surface of the bolt, retaining the alarm actuating lever is such pivoted alarm actuating position, as shown in FIG. id.

The only way that the alarm can be shut oft" is by extension of the 'bolt 24 to fully extended position by the keyed bolt actuating means 26 which relieves the retention of the bolt against the pivoted alarm actuating lever and permits the compression spring 106 through the positioning plunger 108 to force the alarm actuating lever back to alarm nonactuating position, that is, from the position shown in FIG. 11 to the position shown in FIG. 2. Thus, once the alarm has been sounded, release of the pressure bar 70 will not affect the position of the bolt 24 and will, therefore, not aifect the sounding of said alarm. l

After the bolt 24 has been moved from extended to retracted position by the emergency bolt actuating means 28, as described, release of the pressure bar 70 merely moves the pressurebar cam lever 86 away from the bolt cam contacting roller 54, leaving the bolt in the retracted position, but permitting i e-extension of the auxiliary latch 34, said pressure bar being urged outwardly away from the base upon release by the presssure bar compression spring 80. Thus, with the door 36 reclosed,

the auxiliary latch 34 will re-engage between said door 7 and the doorjamb 38, retaining said door closedalthough readily openable by a redepression of the pressure bar 70 for withdrawing the auxiliary latch. In this manner,

and as a result of the auxiliary latch 34 combined in the mechanism of the lock device of the present invention, the door 36 will always act as a true emergency door, serving as a fire barrier in view of said door being retained closed by the auxiliary latch, despite the with drawal of the bolt 24.

We have provided, therefore, according to the principles of the present invention, an alarm and safety lock device wherein the bolt 24 may be extended and retracted by the keyed bolt actuating means 26 without affecting or causing the sounding of an alarm by the alarm actuating means 30, said bolt movement being accomplished through a unique camming system which is relatively simple, yet positively operable. Furthermore, we have provided in said combination, an emergency bolt act-uating means 28 which may be used on anemergency basis to quickly retract the bolt 24, but will alway activate the alarm actuating means 30 to sound an alarm, the sounding of said alarm being positive and impossible to circumvent during withdrawal of the bolt by said emergency bolt actuating means. Still further, we have provided an auxiliary latch 34 in combination with the emergency bolt actuating means 28 which is operable by said emergency bolt actuating means for permitting opening of a door once the bolt 24 has been withdrawn and will provide relatching for the door when the door is reclosed and despite the withdrawal of the bolt24, thereby forming the door as a true emergency door which, when relatched, will serve as a fire barrier.

1. In a locking device, the combination of: a frame; a bolt movable in said frame between an extended locking position and a retracted unlocking position; bolt actuating means operably connected to said bolt for moving said bolt between said extended and retracted positions; said bolt actuating means including a cam member slidable in one direction moving said bolt from said retracted to said extended position and slidable in the opposite direction moving said bolt from said extended to said retracted position, a cam on said cam member having first and second dwell portions and an intermediate actuating portion, cam follower means engaged with said cam movable progressively through. said first dwell and said actuating and said second dwell portions when moved in a first direction and progressively through said second dwell and said actuating and said first dwell portions when. moved in a reverse second direction, said cam follower means sliding said cam member in said one direction when moving through said cam actuating portion in said first direction and sliding said cam mem her in said opposite direction when moving through said cam actuating portion in said second direction, said cam follower means being free of sliding said cam member during any movement through said cam first and second dwell portions; and means for moving said cam follower means in said first and second directions.

2. A locking device as defined in claim 1 in which said cam of said bolt actuating means includes a cam slot in said cam member having said first and second dwell and said intermediate actuating portions; and in which said cam follower means of said bolt actuating means includes a cam follower engaged in and movable along said cam slot.

3. A locking device as defined in claim l which said cam of said bolt actuating means includes a T-shaped cam slot in said cam member having the top of said T extending parallel to said cam member slidable movement and the leg of said T extending transverse to said cam member slidable movement; in which said cam follower means of said bolt actuating means includes a cam follower engaged in and movable along said T-shaped cam slot; and in which said means moving said cam follower means includes means for moving said cam follower means in a circular path in said first direction and in a reverse circular path in said second direction, said cam follower moving progressively through one side of said cam slot T top and said cam slot T leg and the other side of said cam slot T top in said one circular direction, said cam follower moving pregressively through said other side of said cam slot T top and said cam slot T leg and said one side of said cam slot T top in said opposite circular direction.

4. A locking device as defined in claim 1 in which bolt blocking means is engaged with certain of said cam member and bolt in said bolt extended and retracted positions for blocking said bolt against movement from said positions; and in which there is means operably associated between said bolt blocking means and said bolt actuating means for moving said bolt blocking means out of bolt blocking position during movement of said cam follower means through either of said cam first and second dwell portions toward said cam actuating portion.

5. A locking device as defined in claim 1 in which alarm actuating means is operably associated with one of said bolt and bolt actuating means including a lever carriage movable between first and second positions, a lever pivotal on said lever carriage, said lever being engaged with certain of said cam member and bolt when said bolt is in said extended position and said lever carriage is in said first position, said lever being free of engagement with said certain of said cam member and bolt when said lever carriage is in said second position, alarm operating means associated with said lever for operating an alarm upon pivoting of said lever, said lever'being pivoted when engaged with said certain of said cam member and bolt and said bolt is moved from said extended to said retracted position, said lever being free of pivoting when disengaged from said certain of said cam member and bolt through said lever carriage movement from said first to said second position; and in which there is means operably associated with said lever carriage and said bolt actuating means for moving said lever carriage into said first position during the latter part of movement of said cam follower means in said cam second dwell portion in said cam follower means first direction of movement and moving said lever carriage from said first to said second position during the initial part of said movement of said cam follower means in said cam second dwell portion during movement of said cam follower means in said second direction of movement.

6. A locking device as defined in claim 1 in which said bolt actuating means is a first bolt actuating means;

in which a second bolt actuating means is operably connected to said bolt for moving said bolt from said extended to said retracted position when said second bolt actuating means is moved from a first to a second position; and in which said cam of said first bolt actuating means is constructed and arranged for movement of said cam follower means initially through said cam second dwell portion and directly subsequently into and through said cam first dwell portion without movement through said cam actuating portion during movement of said bolt from said extended to said retracted position through movement of said second bolt actuating means from said first to said second position. v V

7. A locking device as defined in claim 1 in which said cam of said bolt actuating means includes a T- shaped cam slot in said cam member having the top of said T extending parallel to said cam member slidable movement and the leg of said T extending transverse to said cam member slidable movement; in 'which said cam follower means of said bolt actuating means includes a cam follower engaged in and movable along said T-shaped cam slot; in which said means moving said cam follower means includes means for moving said cam follower means in a circular path in said first direction and in a reverse circular path in said second direction, said cam follower moving progressively through one side of said cam slot T top and said cam slot T leg and the other side of said cam slot T top in said one circular direction, said cam follower moving progressively through said other side of said cam slot T top and said cam slot T leg and said one side of said cam slot T top in said opposite circular direction; in which said bolt actuating means is a first bolt actuating means; in which a second bolt actuating means is operably connected to said bolt for moving said bolt from said extended to said retracted position when said second bolt actuating means is moved from a first to a second position; and in which said cam of said first bolt actuating means is constructed and arranged for movement of said cam follower means initially through said cam second dwell portion and directly subsequently into and tnrough said cam first dwell portion without movement through said cam actuating portion during movement of said bolt from said extended to said retracted position through movement of said second bolt actuating eans from said first to said second position.

8. A locking device as defined in claim 1 in which bolt blocking means is engaged with certain of said cam member and bolt in said bolt extended and retracted positions for blocking said bolt against movement from said positions; in which there is means operably associated between said bolt blocking means and said bolt actuating means for moving said bolt blocking means out of bolt blocking position during movement of said cam follower means through either of said cam first and second dwell portions toward said cam actuating portion; in which said bolt actuating means is a first bolt actuating means; in which a second bolt actuating means is operably connected to said bolt for moving said bolt from said extended to said retracted position when said second bolt actuating means is moved from a first to a second position; and in which said cam of said first bolt actuating means is constructed and arranged for movement of said cam follower means initially through said cam second dwell portion and directly subsequently into and through said cam first dwell portion without movement through said cam actuating portion during movement of said bolt from said extended to said retracted position through movement of said second bolt actuating means from said first to said second position.

9. A locking device as defined in claim 1 in which alarm actuating means is operably associated with one of said bolt and bolt actuating means including a lever carriage movable between first and second positions, a lever pivotal on said lever carriage, said lever being engaged with certain of said cam member and boltwhen said bolt is in said extended position and said lever carriage is in said first position, said lever being free of engagement with said certain of said cam member and bolt when said lever carriage is in said second position, alarm operating means associated with said lever for operating an alarm upon pivoting of said lever, said lever being pivoted when engaged with said certain of said cam member and bolt and said bolt is moved from said extended to said retracted position, said lever being free of pivoting when disengaged from said certain of said cam member and bolt through said lever carriage movement from said first to said second position in which there is means operably associated with said lever carriage and said bolt actuating means for moving said lever carriage into said first position during the latter part of movement of said cam follower means in said cam second dwell portion in said cam follower means first direction of movement and moving said lever carriage from said first to said second position during the initial part of said movement of said cam follower means in said cam second dwell portion during movement of said cam follower means in said second direction of movement; in which said bolt actuating means is a first bolt actuating means; in which a second bolt actuating means is operably connected to said bolt for moving said bolt from said extended to said retracted position when said second bolt actuating means is moved from a first to a second positic-n; and in which said cam of said first bolt actuating means is constructed and arranged for movement of said cam follower means initially through said cam second dwell portion and directly subsequently into and through said cam first dwell portion without movement through said cam actuating portion during movement of said bolt from said extended to said retracted position through movement of said second'bolt actuating means from said first to said second position.

10. A locking device as defined in claim 1 in which said cam of said bolt actuating means includes a T-shaped cam slot in said cam member having the top of said T extending parallel to said cam member slidable movement and the leg of said T extending transverse to said cam member slidable movement; in which said cam follower means of said bolt actuating means includes a cam follower engaged in and movable along said T-shaped cam slot; in which said means moving said cam follower means includes means for moving said cam follower means in a circular path in said first direction and in a reverse circular path in saidsecond direction, said cam follower moving progressively through one side of said cam slot T top and said cam slot T leg and the other side of said cam slot T top in said one circular direction, said cam follower moving progressively through said other side of said cam slot T top andsaid cam slot T leg and said one side of said cam slot T top in saidopposite circular direction; in which bolt blocking means is engaged with certain of said cam member and bolt in said bolt extended and retracted positions for blocking said bolt against movement from said positions; in which actuating means is moved from a first to a second position; and in which said cam of said first bolt actuating means is constructed and arranged formo-vement of said cam follower means initially through said cam second dwell portion and directly subsequently into and through said cam first dwell portion without movement through said cam actuating portion during movement of said bolt from said extended to said retracted position through movement of said second bolt actuating means from said first to said second position.

11. A locking device as defined in claim 1 in which said cam of said bolt actuating means includes a T-shaped cam slot in said cam member having the top of said T extending parallel to said cam member slidable move- I means in a circular path in said first direction and in a.

reverse circular path in said second direction, said cam follower moving progressively through one side of said cam slot T top and said cam slot T leg and the other side of'said cam slot T top in said one circular direction, said cam follower moving progressively through said other side of said cam slot T top and said cam slot T leg and said one side of said cam slot T top insaid opposite circular direction in which alarm actuating means is operably associated with one of said bolt and bolt actuating means including a lever carriage movable between first and second positions, a lever pivotal on said lever carriage, said lever being engaged with certain of said cam member and bolt when said bolt is in said extended position and said lever carriage is in said first position, said lever being free of engagement with said certain of said cam member and bolt when said lever carriage is in said second position, alarm operating means associated with said lever for operating an alarm upon pivoting of said lever, said lever being pivoted when engaged with said certain of said cam member and bolt and said bolt is moved from said extended to said retracted position, said lever being free of pivoting when disengaged from said certain of said cam member and bolt through said lever carriage movement from said first to said second position; in which there is means operably associated with said lever carriage and said bolt actuating means for moving said lever carriage into said first position during the latter part of movement of said cam follower means in said cam second dwell portion in said cam follower means first direction of movement and moving said lever carriage from said first to said second position during the initial part of said movement of said cam follower means in said cam second dwell portion during movement of said cam follower means in said second direction of movement; in which said bolt actuating means is a first bolt actuating means;.in which a second bolt actuating means is operably connected to said bolt for moving said bolt from said extended to said retracted position when said second bolt actuating means is moved from a first to a second position; and in which said cam of said first bolt actuating means is constructed and arranged for movement of said cam follower means initially through said cam second dwell portion and directly subsequently into and through said cam first dwell portion without movement through said cam actuating portion during movement of said bolt from said extended to said retracted position through movement of said second bolt actuating means from said first to said second position.

12. In a locking device, the combination of: a frame securable to a mounting surface; a bolt movable on said frame between an extended locking position and a retracted unlocking position; first bolt actuating means .operably connected to said bolt. operable for moving said bolt between said bolt positions; said first bolt actuating means including lock means associated therewith requiringunlocking of said lock means for movement of said bolt by said first bolt actuating means from said extended to said retracted position; second bolt actuating means operably connected to said bolt operable for moving said bolt between certain of said bolt positions; and said second bolt actuating means including an operating lever extending generally parallel to said mounting surface, means mounting said operating lever selectively movable from a first position spaced a maximum distance from said mounting surface to a second position spaced a minimum distance from said mounting surface upon a force being applied against said operating lever and toward said mounting surface, said operating lever remaining generally parallel to said mounting surface throughout said operating lever movement, means operably connecting said operating lever to said bolt for moving said bolt from said extended to said retracted position upon said operating lever being moved from said first to said second position.

13. A locking device as defined in claim 12 in which there is resilient means operably associated with said operating lever of said second bolt actuating means for moving said operatinglever from said second position back to;said first position upon release of said operating lever after having been moved from said first to said second position; and in which said means of said second bolt actuating means operably connecting said operating lever to said bolt is arranged free of moving said bolt during movement of said operating lever from said second to said first position.

14. A locking device as defined in claim .12 in which said means of said second bolt actuating means operably connecting said operating lever to said bolt includes cam means associated between said operating lever and bolt 15 for moving said bolt from said extended to said retracted position upon said operating lever being moved from said first to said second position, said cam means being free of operationbetween said operating lever and bolt during movement of said operating lever from said second to said first position.

15. A locking device as defined in claim 12 in which said means of said second bolt actuating means operably connecting said operating lever to said bolt includes an angled cam surface on said operating lever engageable with a cam roller on said bolt during movement of said operating lever from said first to said second position, said cam surface being free of engagement with said cam roller during movement of said operating lever from said second to said first position; and in which said second bolt actuating means further includes resilient means operably associated with said operating lever permitting movement of said operating lever from said first to said second position and moving said operating lever from said second to said first position upon release of said operating lever after movement to said second position.

.16. A locking device as defined in claim 12 in which alarm means is operably associated with said secondbolt actuating means including means actuated by movement of said bolt from said extended to retracted position through movement of said operating lever from said first to said second position for operating an alarm, said means remaining actuated after once having been actuated despite movement of said operating lever from said second to said first position.

17. In a locking device, the combination of: a frame; a bolt movable on said frame between an extended lock ing position and a retracted unlocking position; first bolt actuating means operably connected to said bolt for moving said bolt between said extended and retracted positions; second bolt actuating means operably connected to said bolt for moving said bolt at least from said extended to said retracted position; alarm actuating means operably connected to said frame for operating an alarm including an alarm lever normally engaged with said bolt when said bolt is in extended position, means mounting said lever movable by said bolt from an alarm nonoperating position to an alarm operating position upon movement of said bolt from said extended toward said retracted position with said lever engaged with said bolt, means mounting said lever movable between bolt engaging and nonengaging positions; and means operably connecting said first bolt actuating means and said lever of said alarm actuating means for moving said lever from said bolt engaging to said nonengaging position when said bolt is in extended position and said first bolt actuating means is operated to move said bolt from said extended to said retracted position.

18. A locking device as defined in claim 17 in which said means mounting said alarm actuating means lever movable between bolt engaging and nonengaging positions includes a lever carriage slidably movable toward and away from said bolt and normally moving said lever into and from bolt engaging and nonengaging positions; in which said means operably connecting said first bolt actuating means and said lever is operably connected to said lever slide for moving said lever slide; and in which said means of said alarm actuating means mounting said lever movable by said bolt from said alarm nonoperating position to said alarm operating position includes means pivotally mounting said lever on said lever carriage.

19. A locking device as defined in claim 17 in which said means, mounting said alarm actuating means lever movable between bolt engaging and nonengaging posi tions includes a lever carriage slidably movable toward and away from said bolt and normally moving said lever into and from bolt engaging and nonengaging positions; in which said means operably connecting said first bolt actuating means and said lever is operably connected to tion, said alarm switch operating said alarm when disengaged by said lever.

2%. A locking device as defined in claim 17 in which said means operably connecting said first bolt actuating means and said lever of said alarm actuating means for moving said lever includes means for moving said lever from said nonengaging to said engaging position and into re-engagement with said bolt at the end of movement of said bolt by said first actuating means into saidbolt retracted position to block said bolt in said retracted position.

21. A locking device as defined in claim 17 in which said second bolt actuating means includes retaining means normally engaged with said alarm lever of said alarm actuating means blocking said lever in said alarm nonoperating position when said bolt is in said extended position and said alarm lever is in said bolt engaging position to thereby block said bolt in said extended position prior to operation of either of said first and second bolt actuating means to move said bolt from said extended position, said second bolt actuating means moving said retaining means from said blocking of said alarm lever during initial movement of said second bolt actuating means to move said bolt from said extended to said retracted position.

22. A locking device as defined in claim 17 in which said means operably connecting said first bolt actuating means and said lever of said alarm actuating means for moving said lever includes means for moving said lever from said nonengaging to said engaging position and into re-engagement with said bolt at the end of movement of said bolt by said first actuating means into said bolt retracted position to block said bolt in said retracted position; and in which said second bolt actuating means includes retaining means normally engaged with said alarm lever of said alarm actuating means blocking said lever in said alarm nonoperating position when said bolt is in said extended position and said alarm lever is in said bolt engaging position to thereby block said bolt in said extended position prior to operation of either of said first and second bolt actuating means to move said bolt from said extended position, said second bolt actuating means moving said retaining means from said blocking of said alarm lever during initial movement of said second bolt actuating means to move said bolt from said extended to said retracted position.

23. A locking device as defined in claim 17 in which said first bolt actuating means includes connection means between said first bolt actuating means and said bolt for retaining said bolt in said bolt extended position for a dwell period during initial movement of said first bolt actuating means and prior to said first bolt actuating means moving said bolt from said extended to said retracted position; and in which said means operably connecting said first bolt actuating means and said lever of said alarm actuating means moves said lever from said bolt engaging to said nonengaging position during said first bolt actuating means dwell period.

24. A locking device as defined in claim 17 in which said first bolt actuating means includes first cam means operably connected between said first bolt actuating means and said bolt for moving said bolt between said extended and retracted positions, said first cam means including a dwell part actionable during the initial movement of said first bolt actuating means to move said bolt from said extended to said retracted position for retaining said bolt in said extended position and prior to said first cam means moving said bolt from said extended to said retracted position, said first cam means dwell part being actionable during the latter stage of movement of said first cam means to move said bolt from said retracted to said extended position for placing said bolt fully in said bolt extended position prior to complete movement of said first cam means; and in which said means operably connecting said first bolt actuating means and said lever of said alarm actuating means includes second cam means operably connected between said first bolt actuating means and said alarm lever for moving said lever from said bolt engaging to said nonengaging position during movement of said first cam means through said dwell part to move said bolt from said bolt extended to said retracted position, said second cam means moving said alarm lever from said bolt nonengaging to said engaging position during movement of said first cam means through said first cam means dwell part during movement of said first cam means to move said bolt from said bolt retracted to said extended position.

25. In a locking device, the combination of: a frame; a bolt movable in said frame between an extended locking position and a retracted unlocking position; first bolt actuating means operably connected to said bolt for moving said bolt'between said extended and retracted positions; second bolt actuating means operably connected to said bolt for moving said bolt from said extended to said retracted position and being incapable of moving said bolt from said retracted to said extended position; means operably associated with said bolt for retaining said bolt in each of bolt extended and retracted positions except during movement of said bolt by one of said first and second bolt actuating means; alarm means operably associated with said bolt actionable for operating an alarm when said bolt is moved from said bolt extended to retracted position by said second bolt actuating means and being free of actuation for operating said alarm when said bolt is moved from said bolt extended to said retracted position by said first bolt actuating means; an auxiliary latch movable on said frame between an extended latching position and a retracted unlatching psition; latch actuating means operably connected between said second bolt actuating means and said latch for moving said latch from said extended to said retracted position upon said second bolt actuating means being operated to move said bolt from said bolt extended to said retracted position; and means operably connected to said latch for automatically moving said latch back from said latch retracted position to said extended position upon release of said second bolt actuating means after movement of said bolt by said second bolt actuating means from said bolt extended to said retracted position.

26. A locking device as defined in claim 25 in which said second bolt actuating means is normally in a first position and is movable from said first position to a second position by pressure applied thereagainst for moving said bolt from said bolt extended to said retracted position; and in which said means operably connected to said latch for automatically moving said latch back to said extended position upon said release of said second bolt actuating means includes resilient means operably connected to said second bolt actuating means for automatically moving said second bolt actuating means from said second to said first position upon release of said pressure applied against said second bolt actuating means, and in which said latch actuating means includes means operably connected between said second bolt actuating means and said latch for moving said latch between said latch extended and retracted positions substantially in unison with said second bolt actuating means movement between said first and second positions.

References Cited UNITED STATES PATENTS 585,138 5/1897 Vandevelde ZOO-61.67 1,047,105 12/1912 Nagy ZOO-61.67 1,633,468 5/1927 Yendruch ZOO-61.67 2,275,362 3/1942 Golden et al. -380 2,899,819 9/1959 Rolph 292-169 FOREIGN PATENTS 14,448 5/ 1911 France.

ROBERT K. SCHAEFER, Primary Examiner. ROBERT A. VANDERHYE, Assistant Examiner.

U.S. Cl. X.R.

Claims

1. IN A LOCKING DEVICE, THE COMBINATION OF: A FRAME; A BOLT MOVABLE IN SAID FRAME BETWEEN AN EXTENDED LOCKING POSITION AND A RETRACTED UNLOCKING POSITION; BOLT ACTUATING MEANS OPERABLY CONNECTED TO SAID BOLT FOR MOVING SAID BETWEEN SAID EXTENDED AND RETRACTED POSITIONS; SAID BOLT ACTUATING MEANS INCLUDING A CAM MEMBER SLIDABEL IN ONE DIRECTION MOVING SAID BOLT FROM SAID RETRACTED TO SAID EXTENDED POSITION AND SLIDABLE IN THE OPPOSITE DIRECTION MOVING SAID BOLT FROM SAID EXTENDED TO SAID RETRACTED POSITION, A CAM ON SAID CAM MEMBER HAVING FIRST AND SECOND DWELL PORTINS AND AN INTERMEDIATE ACTUATING PORTION, CAM FOLLOWER MEANS, ENGAGED WITH SAID CAM MOVABLE PROGRESSIVELY THROUGH SAID FIRST DWELL AND SAID ACTUATING AND SAID SECOND DWELL PORTIONS WHEN MOVED IN A FIRST DIRECTION AND PROGRESSIVLEY THROUGH SAID SECOND DWELL AND SAID ACTUATING AND SAID FIRST DWELL PORTIONS WHEN MOVED IN A REVERSE SECOND DIRECTION, SAID CAM FOLLOWER MEANS SLIDING SAID CAM MEMBER IN SAID ONE DIRECTION WHEN MOVING THROUGH SAID CAM ACTUATING PORTION IN SAID FIRST DIRECTION AND SLIDING SAID CAM MEMBER IN SAID OPPOSITE DIRECTION WHEN MOVING THROUGH SAID CAM ACTUATING PORTION IN SAID DIRECTION, SAID CAM FOLLOWER MEANS BEING FREE OF SLIDING SAID CAM MEMBER DURING ANY MOVEMENT THROUGH SAID CAM FIRST AND SECOND DWELL PORTIONS; AND MEANS MOVING SAID CAM FOLLOWER MEANS IN SAID FIRST AND SECOND DIRECTION.

12. IN A LOCKING DEVICE, THE COMBINATION OF: A FRAME SECURABLE TO A MOUNTING SURFACE; A BOLT MOVABLE ON SAID FRAME BETWEEN AN EXTENDED LOCKING POSITION AND A RETRACTED UNLOCKING POSITION; FIRST BOLT ACTUATING MEANS OPERABLY CONNECTED TO SAID BOLT OPEABLE FOR MOVING SAID BOLT BETWEEN SAID BOLT POSITIONS; SAID FIRST BOLT ACTUATING MEANS INCLUDING LOCK MEANS ASSOCIATED THEREWITH REQUIRING UNLOCKING OF SAID LOCK MEANS FOR MOVEMENT OF SAID BOLT BY SAID FIRST BOLT ACTUATING MEANS FROM SAID EXTENDED TO SAID RETRACTED POSITION; SECOND BOLT ACTUATING MEANS OPERABLY CONNECTED TO SAID BOLT OPERABLE FOR MOVING SAID BOLT BETWEEN CERTAIN OF SAID BOLT POSITIONS; AND SAID SECOND BOLT ACTUATING MEANS INCLUDING AN OPERATING LEVER EXTENDING GENERALLY PARALLEL TO SAID MOUNTING SURFACE, MEANS MOUNTING SAID OPERATING LEVER SELECTIVELY MOVABLE FROM A FIRST POSITION SPACED A MAXIMUM DISTANCE FROM SAID MOUNTING SURFACE TO A SECOND POSITION SPACED A MINIMUM DISTANCE FROM SAID MOUNTING SURFACE UPON A FORCE BEING APPLIED AGAINST SAID OPERATING LEVER AND TOWARD SAID MOUNTING SURFACE, SAID OPERATING LEVER REMAINING GENERALLY PARALLEL TO SAID MOUNTING SURFACE THROUGHOUT SAID OPERATING LEVER MOVEMENT, MEANS OPERABLY CONNECTING SAID OPERATING LEVER TO SAID BOLT FOR MOVING SAID BOLT FROM SAID EXTENDED TO SAID RETRACTED POSITION UPON SAID OPERATING LEVER BEING MOVED FROM SAID FIRST TO SAID SECOND POSITION.

17. IN A LOCKING DEVICE, THE COMBINATION OF: A FRAME; A BOLT MOVABLE ON SAID FRAME BETWEEN AN EXTENDED LOCKING POSITION AND A RETRACTED UNLOCKING POSITION; FIRST BOLT ACTUATING MEANS OPERABLY CONNECTED TO SAID BOLT FOR MOVING SAID BOLT BETWEEN SAID EXTENDED AND RETRACTED POSITIONS; SECOND BOLT ACTUATING MEANS OPERABLY CONNECTED TO SAID BOLT FOR MOVING SAID BOLT AT LEAST FROM SAID EXTENDED TO SAID RETRACTED POSITION; ALARM ACTUATING MEANS OPERABLY CONNECTED TO SAID FRAME FOR OPERATING AN ALARM INCLUDING AN ALARM LEVER NORMALLY ENGAGED WITH SAID BOLT WHEN SAID BOLT IS IN EXTENDED POSITION, MEANS MOUNTING SAID LEVER MOVABLE BY SAID BOLT FROM AN ALARM NONOPERATING POSITION TO AN ALARM OPERATING POSITION UPON MOVEMENT OF SAID BOLT FROM SAID EXTENDED TOWARD SAID RETRACTED POSITION WITH SAID LEVER ENGAGED WITH SAID BOLT, MEANS MOUNTING SAID LEVER MOVABLE BETWEEN BOLT ENGAGING AND NONENGAGING POSITIONS; AND MEANS OPERABLY CONNECTING SAID FIRST BOLT ACTUATING MEANS AND SAID LEVER OF SAID ALARM ACTUATING MEANS FOR MOVING SAID LEVER FROM SAID BOLT ENGAGING TO SAID NONENGAGING POSITION WHEN SAID BOLT IS IN EXTENDED POSITION AND SAID FIRST BOLT ACTUATING MEANS IS OPERATED TO MOVE SAID BOLT FROM SAID EXTENDED TO SAID RETRACTED POSITION.

25. IN A LOCKING DEVICE, THE COMBINATION OF: A FRAME; A BOLT MOVABLE IN SAID FRAME BETWEEN AN EXTENDED LOCKING POSITION AND A RETRACTED UNLOCKING POSITION; FIRST BOLT ACTUATING MEANS OPERABLY CONNECTED TO SAID BOLT FOR MOVING SAID BOLT BETWEEN SAID EXTENDED AND RETRACTED POSITIONS; SECOND BOLT ACTUATING MEANS OPERABLY CONNECTED TO SAID BOLT FOR MOVING SAID BOLT FROM SAID EXTENDED TO SAID RETRACTED POSITION AND BEING INCAPABLE OF MOVING SAID BOLT FROM SAID RETRACTED TO SAID EXTENDED POSITION; MEANS OPERABLY ASSOCIATED WITH SAID BOLT FOR RETAINING SAID BOLT IN EACH OF BOLT EXTENDED AND RETRACTED POSITIONS EXCEPT DURING MOVEMENT OF SAID BOLT BY ONE OF SAID FIRST AND SECOND BOLT ACTUATING MEANS; ALARM MEANS OPERABLY ASSOCIATED WITH SAID BOLT ACTIONABLE FOR OPERATING AN ALARM WHEN SAID BOLT IS MOVED FROM SAID BOLT EXTENDED TO RETRACTED POSITION BY SAID SECOND BOLT ACTUATING MEANS AND BEING FREE OF ACTUATION FOR OPERATING SAID ALARM WHEN SAID BOLT IS MOVED FROM SAID BOLT EXTENDED TO SAID RETRACTED POSITION BY SAID FIRST BOLT ACTUATING MEANS; AN AUXILIARY LATCH MOVABLE ON SAID FRAME BETWEEN AN EXTENDED LATCHING POSITION AND A RETRACTED UNLATCHING POSITION; LATCH ACTUATING MEANS OPERABLY CONNECTED BETWEEN SAID SECOND BOLT ACTUATING MEANS AND SAID LATCH FOR MOVING SAID LATCH FROM SAID EXTENDED TO SAID RETRACTED POSITION UPON SAID SECOND BOLT ACTUATING MEANS BEING OPERATED TO MOVE SAID BOLT FROM SAID BOLT EXTENDED TO SAID RETRACTED POSITION; AND MEANS OPERABLY CONNECTED TO SAID LATCH FOR AUTOMATIONCALLY MOVING SAID LATCH BACK FROM SAID LATCHED RETRACTED POSITION TO SAID EXTENDED POSITION UPON RELEASE OF SAID SECOND BOLT ACTUATING MEANS AFTER MOVEMENT OF SAID BOLT BY SAID SECOND BOLT ACTUATING MEANS FROM SAID BOLT EXTENDED TO SAID RETRACTED POSITION.