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Publication numberUS3926140 A
Publication typeGrant
Publication dateDec 16, 1975
Filing dateDec 10, 1973
Priority dateApr 12, 1971
Publication numberUS 3926140 A, US 3926140A, US-A-3926140, US3926140 A, US3926140A
InventorsBargiel Joseph
Original AssigneeBargiel Joseph
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Actuating device for a closure alarm mechanism
US 3926140 A
Abstract
In combination with a closure member, such as a door, an actuating device for activating an alarm mechanism to provide an indication of unauthorized entry. The activating device includes a slider which is manually movable to a first position, movable from the first position to a second position via the opening movement of the door, movable to a third position via the closing movement of the door, the alarm mechanism being maintained in a deactivated position in the first, the second and the third positions of the slider. The slider is moved to a fourth position for positioning the alarm mechanism in the activated position providing the output indication upon an unauthorized opening of the door.
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Description  (OCR text may contain errors)

United States Patent [1 1 Bargiel Dec. 16, 1975 Joseph Bargiel, 5245 Ambridge Drive, Agoura, Calif. 91301 22 Filed: Dec. 10, 1973 21 App]. No.: 423,388

Related US. Application Data [63] Continuation-impart of Ser. No. 133,052, April 12,

1971, abandoned.

[76] Inventor:

2,691,357 10/1954 Owen ..l16/86 Primal ExaminerRichard C. Queisser Assistant ExaminerDaniel M. Yasich Attorney, Agent, or Firm-Dunlap & Codding 57 ABSTRACT In combination with a closure member, such as a door, an actuating device for activating an alarm mechanism to provide an indication of unauthorized entry. The activating device includes a slider which is manually movable to a first position, movable from the first position to a second position via the opening movement of the door, movable to a third position via the closing movement of the door, the alarm mechanism being maintained in a deactivated position in the first, the second and the third positions of the slider. The slider is moved to a fourth position for positioning the alarm mechanism in the activated position providing the output indication upon an unauthorized opening of the door.

10 Claims, 22 Drawing Figures US. Patent Dec. 16, 1975 Sheet 1 0f 4 E MECHANISM NERGY STORING 5O 22 fiA A 3 5e 9 66 76 68 k/ Fig.5

Fig. 2

Fig.4

INVENTOR JOSEPH BARG/EL BY JESSUP a BEECHER U.S. Patent Dec. 16, 1975 Sheet20f4 3,926,140

65 Fig. /0

INVENTOR JOSEPH BARG/EL BY JESSUP 5 5550/15? US. Patent Dec.16, 1975 Sheet3of4 3,926,140

mam Dec. 16, 1975 Sheet4 0f4 3,926,140

ACTUATING DEVICE FOR A CLOSURE ALARM MECHANISM CROSS-REFERENCE TO RELATED APPLICATIONS This is a continuation-in-part of the patent application entitled ACTUATING DEVICE FOR A CLO SURE ALARM MECHANISM, Ser. No. 133,052, filed Apr. 12, 1971, now abandoned.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is related generally to alarm systems and, more particularly, but not by way of limitation, to an actuating device connected to an entry door of a residence and activating an alarm mechanism upon the unauthorized opening of the entry door for providing an output indication of the unauthorized opening.

2. Description of the Prior Art The use of residential alarm systems has been wellknown for a substantial number of years. Such alarm systems are employed to emit a warning or annunciation of an unauthorized entry into the residence.

Most commonly the unauthorized entry into a residence is accomplished through an existing closure to the residence such as a door or window. For this reason alarm systems are normally employed in combination with a door or a window to warn of such unauthorized entrance. Conventional systems of the mechanical spring-wound type are normally employed only when the resident is at home. Heretofore, more complex electrical systems were employed when the resident was not at home. The primary purpose of such conventional spring-wound alarms has been to warn a sleeping resident against unauthorized entrance by a burglar or other person with harmful intentions.

It is also desirable to employ the use of an alarm system when the residence is not occupied as well as when it is occupied. An electrical system may be employed for such a purpose; however, such electrical alarm systems are quite expensive and normally prohibitive to the average homeowner or renter. I-Ieretofore, a conventional spring-wound alarm has not been expeditiously applied to the door through which the resident leaves.

It would be desirable to design an alarm system which i can be conventionally wound as by a spring, can be quickly and easily made ready for activation, is not triggered or activated upon the resident leaving the premises, but is triggered or activated upon unauthorized entry into the residence.

SUMMARY OF THE INVENTION The actuating device of the present invention is to be employed in combination with an alarm mechanism which upon the actuating device being moved to a predetermined position permits activation of the alarm mechanism. The alarm mechanism and actuating device of the present invention is designed to be employed upon the interior side of a closure member having a movable portion such as a door. The actuating tie vice includes an actuating bar and a slidlt Iii 'riclifiial usage, the actuating bar will be fixedly rribllfitetl t6 the stationary portion of the closure mr'iibf Llh as the door jamb with the slider and the alafhi iiieeliahisih being fixedly mounted to the door; However, It i to be understood that such an arrangement could be readily reversed. During normal usage of the door, the slider is positioned in a deactivated or unarmed position so that activation of the alarm mechanism does not occur. When it is decided that the resident leave the premises, to set the actuating device the resident manually moves the slider to a first position while the door is in the closed position. Upon the resident opening the door, the slider is caused to move to a second position. Upon the resident leaving the premises and shutting or closing the door, the slider is caused to move to a third position. In each of the first position, the second position and the third position, the alarm mechanism is not permitted to be activated. If the door is opened by an unauthorized person, as prior to the return of the resident, the slider is caused to move to a fourth position. The slider is continuously spring biased to each successive position. When in the fourth position the alarm mechanism is activated causing a quite loud, prolonged ringing of a hell or, in other words, providing an output indication of the unauthorized opening of the door. This ringing of the bell serves to warn neighbors or other nearby persons of the unauthorized entry into the residence. Under normal circumstances, upon return of the resident and the device is still in the position ready for activation, i.e., in the third position, a key-type of lock mechanism is employed by the resident to keep the alarm mechanism from ringing when the resident opens the door. The resident places the key within the lock and rotates the lock so as to retain the slider against movement from the third position to the fourth position, thereby preventing the positioning of the alarm mechanism in the activated position.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially, cut-away front view of the actu ating device of the present invention connected to a closure member and an alarm mechanism, the alarm mechanism being positioned in the deactivated position via a portion of the actuating device.

FIG. 2 is a cross-sectional view of the apparatus of FIG. 1 taken along line 22 of FIG. 1.

FIG. 3 is a fragmentary cross-sectional view of the actuating device of FIG. 1 showing the actuating device in the first position.

FIG. 4 is an end view of the actuating device of FIG. 1, taken along line 4-4 of FIG. 3.

FIG. 5 is a front view of the actuating device of FIG. 1, showing the slider portion of the actuating device in the first position as depicted in FIG. 3.

FIG. 6 is a view similar to FIG. 3, but showing the slider portion of the actuating device in the second position.

FIG. 7 is a view similar to FIG. 5, but showing the slider portion of the actuating device in the second position.

FIG. 8 is a view similar to FIG. 6, but showing the slider portion of the actuating device in the third position.

FIG. 9 is a visw similar to FIG. 7, but showing the slider portion of the actuating device in the third position.

FIG. 10 is a view siiiiiiai to FIG. 8, but showing the slider portion of the athatifig device in the fourth position.

FIG. ii is a view similar t FIG. 9, but with the slider portion of the aettihtiiig devise in the fourth position.

FIG. 12 is an elevational view of a modified actuating device and cooperating alarm mechanism. 1'

FIG. 12A is a fragmentary view taken along the line l2Al2A in FIG. 12.

FIG. 13 is a sectional view taken along the line 1313 in FIG. 12, with the actuating device being shown in partial section. v

FIG. 14 is a view taken along the line 14-14 in FIG. 13.

FIG. 15 is a view taken along the line 1515 in FIG. 13.

FIG. 16 is a sectional view taken along the line 1616 in FIG. 15.

FIG. 17 is a view similar to FIG. 15, but showing the modified actuating device in another position of operation.

FIG. 18 is a view taken along the line l8l8 in FIG. l7;

FIG. 19 is a view similar to FIG. 18, but showing the lock turned to another position with respect to the position of the lock shown in FIG. 18. t

FIG. 20 is a view similar to FIGS; 15 and 17, but showing the modified actuating device in a still further position of operation.

FIG. 21 is a cross-sectional view taken along theline 2121 in FIG. 20.

DETAILED DESCRIPTION OF THE SHOWN EMBODIMENT Referring particularly to FIGS; 1, 2, 3, 4 and 5, shown therein and designated by the general reference numeral 20 is an actuating device constructed in accordance with the present invention, the actuating device generally including a slider 22 and an actuating bar 24. The slider 22 is movably mounted within a guide 26 shown in FIGS. 2 and 3. The guide 26 is fixedly secured to a back plate 28 (shown in FIGS. 1, 2 and 3) of an alarm mechanism 30 (shown in FIGS. 1 and 2), the alarm mechanism 30 having a deactivated position and an activated position and the alarm mechanism 30 providing an indication of an unauthorized opening of the movable portion of the closure member in the activated position thereof. The guide 26 is also adapted to be fixedly secured to a closure member having a movable portion and a stationary portion, the closure member being more particularly shown in the drawings as having a door 32 (movable portion) shown in FIGS. 1, 2 and 3, and door jamb 34 (stationary portion) shown in FIG. 1, located within a persons residence. The actuating bar 24 is shown in FIG. 1 as being adapted to be secured to the stationary portion of the closure member or, more particularly, the door jamb 34, and the guide 26 is shown in FIGS. 1, 2 and 3 as being mounted on the stationary portion of the closure member or, more particularly, the door 32. It is to be understood that the mounting could be reversed so that the guide 26 would be mounted to the stationary portion of the closure member, more particularly, the wall structure adjacent the door jamb 34 and the actuating bar 24 would be mounted upon the movable portion of the closure member or, more particularly, the door 32. It is also to be understood that the actuating device 20 and its assoalarm mechanism 30 generally includes a bell 36 shown in FIGS. 1 and 2), an energy-storing mechanism 38 (shown in FIG. 2), a clapper 40 (shown in FIGS. 1 and 2), and a hammer wheel 42. In one form, the energy-storing mechanism 38 generally includes a spring assembly which is connected through a gearing assembly to effect rotation of the hammer wheel 42. The gearing assembly functions to extend the duration of time of the ringing of the bell 36. For an example of an energy-storing mechanism 38, reference may be had to US. Pat. No. 1,854,126, issued Apr. 12, 1932, entitled BURGLAR ALARM, by B. E. Ferguson.

The energy-storing mechanism 38 is connected through a wind-up shaft 44 (shown in FIGS. 1 and 2) to the bell 36. To store energy within the energy-storing mechanism 38, a person is to manually effect rotation of thebell 36 with the hammer wheel 42 being fixedly held. A ratchet system is included within the energystoring mechanism 38 so as to prevent a release of energy through the shaft 44 and the bell 36. The energystoring mechanism 38 is permitted to only release this energy through a shaft 46 (shown in FIGS. 2, 3 and 5) which is connected to the hammer wheel 42.

Located about the periphery of the hammer wheel 42 are a plurality of hammers 48 (shown in FIGS. 1, 3 and 5). The hammers 48 are adapted to come into contact with a butt end 50 of the clapper 40 shown in FIGS. 1 and 2. The clapper 40 is pivotally mounted by pin 52 (shown in FIGS. 1 and 2) upon the back plate 28. Upon each of the hammers 48 coming into contact with the butt'end 50 of the clapper 40, the fore end of the clapper 40 is adapted to contact the interior of the bell 36. As a result, a loud ringing noise is produced'and with the energy-storing mechanism 38 fully wound, this noise can be produced for a period of several minutes, the alarm mechanism 30 providing an audible output indication of an unauthorized opening of the movable portion of the closure member.

Formed within the back plate 28 is an elongated opening 54-as shown in FIGS. 2 and 3. As shown in FIGS. 2, 3 and 5, a pawl 56 is integrally connected at approximately a right angle to the slider 22 and extends through the opening 54 and is located directly adjacent the hammer wheel 42. As shown in FIGS. 2, 3 and 5, a protuberance 58 is formed on the hammer wheel 42 and is adapted to come into contact with the pawl 56. With the protuberance 58 in contact with the pawl 56, rotation of the hammer wheel 42 is prevented, thereby preventing thealarm mechanism 30 from being positioned in the activated position for providing the output indication in response to the unauthorized opening of the closure member.

Also connected to the pawl 56 of the slider 22 is a spring 60 (shown in FIGS. 2 and 3). The free end of the spring 60 is connected to the guide 26, the spring ,60 biasing the slider 22 generally toward the fourth position of the slider 22 for activating the alarm mechanism 30, as will be described in greater detail below. It is to be noted that the movement of the slider 22 within the guide 26 is substantially lineal.

As shown in FIGS. 1, 2, 3 and 5, integrally secured to 1 the guide 26 is a pin 62. The pin 62 is adapted to coopciated alarm mechanism 30 could be mounted upon any closure member, and it is not the inyentors desire v Formed within the edge of the slider 22 adjacent the enlarged L-shaped slot 68 is a first recess or notch 70 (shown in FIGS. 1, 2, 3 and 5). Spaced from the first recess 70 in the direction of the slot 64 is a second recess or notch 72 (shown in FIGS. 1, 2, 3 and 5). The slider 22, between the first recess 70 and the second recess 72, is bent in the shape substantially of a rightangle jog.

The actuating bar 24 has an upper leg 74 and a lower leg 76. The lower leg 76 is formed of a slightly greater length than the upper leg 74, as noted from FIG. 4 of the drawings.

Formed within the door 32 is a lock 78, shown in FIGS. 8 and 9. The lock 78 is capable of being actuated or operated by means of a key (not shown in the draw ings) to accomplish an authorized opening of the movable portion (the door 32) of the closure member, the key moving a portion of the lock 78. A pawl 80 is connected to the lock 78 and the key moves a portion of the lock 78 to effect the movement of the pawl 80. The key is insertable within the lock 78 from the exterior side of the movable portion of the closure member (the door 32). The lock 78 is located so the pawl 80 is capable of cooperating with the second recess 72, i.e.,the pawl 80 being connected to the lock 78 and movable to a position wherein the pawl 80 is disposed in the recess 72 for engaging the slider 32 and preventing the movement of the slider 22 from the third position when opening the movabale portion (the door 32) of the closure member via operating the lock 78 with the key, as will be described further below.

The operation of the actuating device of this invention will be described below and it will be assumed that the actuating device 20 and its associated alarm mechanism are mounted upon the movable portion of the closure member (the door 32) and the actuating bar 24 is mounted in a particular location on or near the stationary portion of the closure member, i.e., near the door jamb 34.

During the time the residence is occupied and it is desired to set the alarm mechanism 30 in the deactivated position, the slider 22 is located in the unarmed position as shown in FIG. 1 of the drawings. In this deactivated position of the alarm mechanism 30 and unarmed position of the slider 22, the pin 62 is located within the shortest leg portion of the L-shaped slot 64 and the slider 22 is canted slightly with respect to the normal lineal direction of movement of the slider 22, the pin 62 engaging a portion of the slider 22 preventing movement of the slider 22 via the spring 60 and positioning the slider 22 in the unarmed position. In this deactivated position of the alarm mechanism 30 and unarmed position of the slider 22, the slider 22 does not come into contact with the actuating bar 24 during the closing of the door 32 and the slider 22 will remain in the unarmed position during the opening and the closing of the door 32.

Now it will be assumed that it is desired for the resident to set the alarm mechanism 30 prior to departing from the residence for a period of time. The resident then first effects rotation of the bell 36 to wind up the spring within the energy-storing mechanism 38. The resident then grasps the slider 22 disengaging the slider 22 by removing the pin 62 out of cooperation with the shortest leg portion of the slot 64, thereby allowing the slider 22 to slidingly move rightward under bias of the spring 60 a sufficient distance so that the upper leg 74 of the bar 24 is disposed within the first recess 70 and engages a portion of the slider 22 for preventing further 6 movement of the slider 22. This moves the slider 22 from the unarmed position shown in FIGS. 1 and 2 to the first position of the slider 22 shown in FIGS. 3 and 5. It is assumed that the foregoing procedure is accomplished with the door 32 closed.

Upon the resident leaving the premises and opening the door 32, the slider 22 is disengaged from the bar 24 thereby allowing the slider 22 to be biasingly moved via the spring 60 rightward a slight distance until the pin 62 disposed within the longest leg of the slot 64 engages a portion of the slider 22 preventing further movement of the slider 22 via the spring 60 and positioning the slider 22 in the second position, as shown in FIGS. 6 and 7.

After the resident has passed exteriorly of the premises, the door 32 is closed and the upper leg 74 comes into contact with and engages the rear side of the slider 22. As a result, the slider 22 is pivoted laterally a sufficient distance so that the pin 62 becomes completely disengaged from the slot 64, thereby allowing the slider 22 to slide or to be moved via the spring 60 until the longest leg of the slot 68 comes into contact with and is engaged by the lower leg 76 of the actuating bar 24, thereby preventing further movement of the slider 22 and positioning the slider 22 in the third position, as shown in FIGS. 8 and 9. As a result, the slider 22 is prevented from further movement. It is to be noted that in the first position of the slider 22 (FIGS. 3 and 5), which was established by the resident manually moving the slider 22 from the unarmed position to the first position, in the second position of the slider 22 (FIGS. 6 and 7), which resulted when the door 32 was opened disengaging the slider 22 from the actuating bar 24 and allowing the slider 22 to be moved via the spring 60 from the first position to the second position, and the third position of the slider 22 (FIGS. 8 and 9), which occurred when the door 32 was closed causing the actuating bar 24 to engage the slider 24, disengaging the slider 22 from the pin 62 allowing the slider 22 to be moved via the spring 60 from the second to the third position, the pawl 56 is in continuous contact with the protuberance 58, thereby preventing rotation of the hammer wheel 42 and thus preventing the alarm mechanism 30 from being positioned in the activated position for providing the output indication.

Let it now be assumed that unauthorized entrance through the door 32 into the unoccupied residence occurs. Upon the door 32 being opened, the slot 68 is caused to be moved out of engagement with the lower leg 76 of the actuating bar 24, as the door 32 swings away from the door jamb 34, thereby disengaging the slider 22 from the actuating bar 24 allowing the slider 22 to be moved via the spring 60 from the third position to the fourth position. It is to be understood that the longitudinal movement of the slider 22 is caused by the spring 60. The slider 22 moves sufficiently rightward so that the pawl 56 moves out of engagement with the protuberance 58, thereby positioning the slider 22 in the fourth position. Therefore, the hammer wheel 42 is premitted to rotate, such rotation being effected by means of the energy-storing mechanism 38 when the slider 22 is positioned in the fourth position. There upon, the hammers 48 come into contact with the butt end 50 of the clapper 40 positioning the alarm mecha nism 30 in the activated position. The resulting loud ringing (the audible output indication) over an extended duration should make known the unauthorized entrance to any person within several hundred feet of the premises. The output indication of the alarm mechanism 30 should act as a deterrent for continued unauthorized entrance.

If the resident or other authorized person returns to the residence and finds the alarm mechanism 30 is in the deactivated position and the door 32 closed, the person can open the door 32 without effecting actuation of the alarm mechanism 30 or, in other words, without positioning the alarm mechanism in the activated position by using the key to operate the lock 78 for gaining authorized entry. The resident places a key within the lock 78 and pivots or moves the lock 78 in a manner causing the pivoting movement of the pawl 80. The pawl 80 is caused to be moved into cooperation. with the recess 72 and in abutting or engaging relationship with a portion of the slider 22, thereby preventing movement of the slider 22 from the third position when the door 32 is opened. Therefore, upon opening of the door 32, although the slider 22 has been disengaged from the lower leg 76 of the actuating bar 24, movement of the slider 22 from the third position is prevented by the pawl 80 engaging a portion of the slider 22. Once the resident or other authorized person has gained entrance within the residence, that person may then reset the actuating device 20 to the deactivated or unarmed position (FIGS. 1 and 2) or to the first position (FIGS. 3 and 5), if desired.

EMBODIMENT OF FIGS. 12 THROUGH 21 FIGS. 12 through 21 illustrate a modified actuating device a constructed in accordance with the present invention in which the modified slider 22a moves in a single plane and the slider 22a is not required to move out of that plane, in a manner similar to the slider 22 described before. In the description which follows, for ease of correlation with corresponding parts of the actuating device 20, the same numerals have been used followed by a lower-case letter. In FIG. 12, the alarm mechanism 30a is shown consisting of the bell 36a forming a significant portion of an annunciator means which provides an indication of the unauthorized opening of the movable portion of the closure member or door 32a to which it is mounted. The door 32a is hingedly mounted within a frame having a door jamb 34a to which is secured an inwardly extending modified actuating bar 24a, forming a stop member for the slider 22a and in effect constituting a trigger for the annunciator means.

A circular modified back plate 28a, shown in FIG. 13, having a radial extension 82, is mounted by means of spacer posts 83 to the door 32a. The back plate 28a forms one side of a flat guide channel for the slider 22a, the other side being formed by the modified guide 26a between which is sandwiched a spacer plate 84 having a large notch 85 therein. As best seen in FIG. 14, the slider 22a is free to slide horizontally in the notch 85, the slider 22a being biased outwardly thereof by a serpentine spring 60a positioned in the notch 85 and having one end engaging the slider 22a and the opposite end engaging one end of the slider 22a. Pivoted' to the back plate 28a, on the opposite side from the slider 22a, is the hammer wheel 42a forming a significant portion of the annunciator means. The wheel 42a is linked by a modified geared shaft 46a to the inner end of the modified energy-storing mechanism 38 a, the energystoring mechanism 38a being more particularly a clock spring. The outer end of the energy-storing mechanism 38a is secured to a case 86 (shown in FIG. 13) which is in turn secured to the bell 36a. Conventional ratchet mechanism (not shown) allows the bell 36a and hence the outer end of the spring type energy-storing mechanism 38a to be wound in a clockwise direction (FIG. 12), thereby storing energy in the spring type energystoring mechanism 38a but with the ratchet preventing unwinding. A torque is thus applied to the hammer wheel 42a in a clockwise direction, as shown in FIG. 20, but rotation of the wheel 42a is blocked by the pawl 56a bent laterally out from the slider 22a and extending through a slot or opening 54a formed in the back plate 28a. The pawl 56a intercepts one of the modified hammers 48a which strike the clapper 40a in the same manner as described before with respect to the actuating device 20.

It will be noted that the large notch in the spacer plate 84 is of sufficient width to allow some lateral sliding of the slider 22a, while still confining all motion of the slider 22a to the single plane in which the slider 22a is disposed.

In FIG. 15, the slider 22a is shown in solid-lines in the unarmed position. The pin 62a mounted on the back plate 28a extends into a somewhat serpentine shaped modified slot 64a formed in the slider 22a.

In the position in which the slider 22a is shown in full lines in FIG. 15, the slider 22a is prevented from being pushed to the left by the spring 60a, by virtue of a shoulder 88 on the slider 22a which extends into the serpentine slot 64a and intercepts the pin 62a, thereby limiting leftward movement of the slider 22a. In this position, the end 90 of the slider 22a is stopped short of the edge of the door 32a and does not come into contact with the actuating bar 24a secured to the door jamb 34a. In this position, the actuating device is locked out of operation.

When the lefthand end of the slider 22a is pushed up to the position shown in phantom in FIG. 15, the slider 22a slides to the left and the end 90 butts against the actuating bar 24a. This is the first position of the slider 22a. In the first position of the slider 22a, the slider 22a is prevented from further leftward movement by the engagement between the end 90 and the actuating bar 24a. From the first position, the actuating device 20a is ready to be positioned in the second and the third positions whenever the resident opens and then closes the door 32a.

The positioning of the actuating device 20a in the second and the third positions is illustrated in FIG. 17. When the door 32a is opened, the end 90 of the slider 22a is freed from the restraint imposed by the actuating bar 24a or, in other words, disengaged from the actuating bar 24a. The slider 22a slides to the left to the phantom position shown in FIG. 17, where further movement is restrained or prevented by the engagement of the pin 62a with a shoulder 92 formed on the lower edge of the serpentine slot 64a. This opening of the door 32a, a transient condition as the occupant leaves the room, places the actuating device 20a in the second position.

When the door 32a is closed, the actuating device 20a moves to the third position by virtue of the engagement of a notched surface 94 formed on the end 90 of the slider 22a with the sloping cam surface formed on the underface of the actuating bar 24a. This cams the end 90 of the slider 22a downward to the position shown in solid lines in FIG. 17. This downward pivoting of the slider 22a causes the shoulder 92 to clear the pin 62a so that, at this juncture, the only thing restraining or preventing the slider 22a from further leftward movement (by the spring 60a) is a vertical surface 98 (FIG. 19) formed on the slider 22a at the righthand side of the notch 94, which bears against the actuating bar 24a. The end 90 and the notch surface 98 are thus engageable with the actuating bar 24a to restrain or prevent the slider 22a from being moved via the bias of the spring 60a. The door 32a is now closed and the actuating device 20a is positioned in the third position, the slider 22a being movable to the fourth position for posi' tioning the alarm mechanism 30a in the activated posi' tion in response to the unauthorized opening of the door 32a.

When the door 32a is opened, the surface 98 is disengaged or freed from the restraint of the actuating bar 241a, and the slider 22a is moved fully to the left to the fourth position shown in FIG. 20, being stopped at that point by the engagement of the pin 62a with the righthand end of the serpentine slot 64a. This last move ment from the third position of the slider 22a (shown in FIG. 17) to the fourth position of the slider 22a (shown in FIG. 20) is sufficient to free the pawl 56a from the end of the hammer 48a, and the hammer wheel 42a is now free to be rotated in a clockwise direction (FIG. 20) by the spring type energy-storing mechanism 38a through the geared shaft 46a. As the wheel 42a rotates, each of the hammers 48a strikes the butt end 50a of the clapper 40a, causing the other end of the clapper 40a to strike repeatedly against the inner surface of the bell 36a and effect the required annunciation, i.e., sound the alarm and provide the output indication of an unauthorized opening of the door 32a.

This form of the invention also includes locking device which serves the function of locking the alarm mechanism 30a in an activated position (FIG. 20), thereby preventing an intruder, even though he is inside the room, from stopping the alarm mechanism 30a by pushing in on the slider 22a. The locking device also serves the function of allowing the authorized occupant to block operation of the alarm mechanism 30a when he returns to his own room and turns the key.

The locking device is incorporated into a structure which in conjunction with the radial extension 82 of the back plate 28a also serves to provide added support for the slider 22a in its sliding motion in the notch 85. As shown in FIG. 16, the locking device comprises an insert 100 which is inserted in a hole formed in the door 32a. The insert 100 contains a conventional keyoperated lock "78a, the turning of which by the key 102 causes a pin 104 to rotate 180. The end of the pin 104 is cut on a bias and has secured thereto a disk or washer 106 keyed at top and bottom into grooves 108 and 109 in a respective pair of actuating pawls or pins 111 and 113. The grooves 108 and 109 are substantially wider than the thickness of the washer 106, thereby allowing each of the pins 111 and 113 to be biased against the slider 22a by a spring 110 and 115, respectively, except when restrained by the engagement of the washer 106 against the left side of the grooves 108 and 109, as shown for example in FIG. 18. The spring 110 biases the pin 111 and the spring 115 biases the pin 113. One pin 111 or 1 13 is thus biased against the slider 22a, depending on the rotative position of the central pin 104.

The position shown in FIG. 16 is the normal position for the lock 78a in which the pin 104 is turned so as to cause the locking pin 113 to be held retracted by the washer 106, while the pin 111 is allowed to be biased to the right by the spring 110. The spring 110 thus biases the pin 111 against the face of the slider 22a, where the 10 pin 111 is in position to serve the locking function in the manner which will now be described.

While the actuating device 20a is being positioned in the unarmed position, the first position, the second position and the third position, the pin 111 is not moved, the end of the pin 111 merely sliding across the face of the slider 22a as the slider 22a goes through the motions depicted in FIGS. 15 and 17. However, when the slider 22a is positioned in the fourth position, as shown in FIG. 20, a rounded notch 112 formed on the upper surface of the slider 22a is positioned generally opposite the pin 111, the pin 111 is extended into the notch 112 by the spring 110, and the parts then occupy the position shown in FIG. 20. Thereafter, it is virtually impossible to move the slider 22a to the right until the lock 78a is rotated, with consequent retraction of the pin 11 1. Therefore, an intruder, once he has set off the alarm mechanism 30a, cannot stop it simply by pushing in on the slider 22a. Only one having the key 102 can bring the alarm mechanism 30a to a stop before the spring 38a has run down. This he does simply by rotating the pin 104 thereby retracting the pin 111 from the notch 112, following which the slider 22amay be pushed to the right, causing the pawl 56a to reengage one of the hammers 48a of the wheel 42a, thereby stopping the ringing of the alarm mechanism 30a.

The lock 78a also serves the function of allowing the authorized occupant to re-enter the room without sounding the alarm mechanism 30a, even though the actuating device 20a has been placed in the third position shown in solid lines in FIG. 17. Assuming the occupant, leaving the lock 78a in the normal condition shown in FIG. 16, leaves the room after positioning the slider 22a in the first position of FIG. 17. As explained hereinbefore, the opening and subsequent closing of the door 32a will cause the actuating device 20a to be positioned in the third position as shown in solid lines in FIG. 17. The authorized occupant, when returning to the room, now inserts the key 102 and turns the lock 78a to the position shown in FIG. 18. In this position, the lower pin 113 is now free to be biased to the right and into a locking hole 114 formed in the slider 22a. This locks the slider 22a against further movement in either direction, and the occupant may then re-enter the room without positioning the alarm mechanism 30a in the activated position. After re-entering the room, the authorized occupant merely turns the lock 78a to normal position, shown in FIG. 16, and simultaneously pushes the slider 22a back into the unarmed position shown in solid lines in FIG. 15.

While the actuating device 20a has been pictured with the major portion, i.e., including the bell 36a, being mounted on the door 32a, it is obvious that the positions of the parts may be reversed and the major portion may be mounted stationarily on the door frame with only the actuating bar 24a being mounted on the door 32a.

Similarly, the actuating device 20 as shown in FIG. 1 may be mounted on the opposite side of the door 32a, i.e., where the door 32a hinges from the other side. In this event, the actuatirig device 20 will be upside down from the position of the actuating device 20a shown in FIG. 12. To meet this contingency, a sseentl clapper 40b is provided, as shown in FIG. 15; pivoted on a pin 52b, diametfl from the clapper 4021: Thus, even though one eta per my be heldout of engagement by the wheel 12a y virtue of ravity, the st er clapper,

1 1 i.e., the uppermost clapper, may be brought into engagement with the wheel and will serve to effectuate the annunciation, or, in other words, to provide the output indication indicating the unauthorized opening of the door.

I claim:

1. An actuating device adapted to be mounted on a closure member having a stationary portion and a movable portion, for indicating the unauthorized opening of the movable portion of the closure member, the device comprising:

an alarm mechanism, having a deactivated position, and an activated position, providing the indication of the unauthorized opening of the movable portion of the closure member in the activated position;

a slider movably mounted on the closure member for selective movement to an unarmed position, a first position, a second position, a third position and a fourth position, the slider having a portion connectable to a portion of the alarm mechanism, the slider being connected to the alarm mechanism in the unarmed position, the first position, the second position and the third position of the slider and the slider being disconnected from the alarm mechanism in the fourth position of the slider, the alarm mechanism being positioned in the deactivated position when connected to the slider and the alarm mechanism being positioned in the activated position when disconnected from the slider in the fourth position of the slider;

bias means connected to the slider for biasingly moving the slider toward the fourth position of the slider; and

means removably engageable with portions of the slider for cooperatingly positioning the slider in the unarmed position, the first position, the second position and the third position, said means engaging one portion of the slider preventing movement of the slider via the bias means and positioning the slider in the unarmed position, said means being disengageable from the slider allowing the slider to be moved via the bias means from the unarmed position to the first position wherein said means engages another portion of the slider preventing movement of the slider via the bias means and positioning the slider in the first position, said means being disengageable from the slider via the opening of the movable portion of the closure member allowing the slider to be moved via the bias means from the first position to the second position wherein said means engages one other portion of the slider preventing movement of the slider via the bias means and positioning the slider in the second position, said means being disengageable from the slider via the closing of the movable portion of the closure member allowing the slider to be moved via the bias means from the second position to the third position wherein said means engages one other portion of the slider preventing movement of the slider via the bias means and positioning the slider in the third position, and said means being 12 nism and positioning the alarm mechanism in the activated position.

2. The actuating device of claim 1 wherein the closure member includes a lock or the like operated by a key or the like to accomplish an authorized opening of the movable portion of the closure member, and wherein the device is defined further to include:

means connected to the lock and movable to a position engaging a portion of the slider preventing movement of the slider via the bias means from the third position to the fourth position when opening the movable portion of the closure member via operating the lock with a key.

3. The actuating device of claim 1 wherein the bias means is defined further as including a spring, having one end connected to the closure member and the opposite end connected to the slider, biasing the slider toward the fourth position of the slider.

4. The actuating device of claim 1 wherein the slider includes a slot formed through a portion thereof; and wherein the means removably engageable with portions of the slider is defined further to include:

a guide connected to the closure member; and

a pin formed on a portion of the guide removably disposable in the slot formed in the slider and removably engageable with a portion of the slider formed via the slot in the slider, the pin being disposed in the slot and engaging a portion of the slider formed via the slot in the slider in the unarmed position of the slider and preventing the movement of the slider via the bias means from the unarmed position.

5. The actuating device of claim 4 wherein the slot in the slider forms one portion of the slider engageable with the pin in the unarmed position of the slider and another portion of the slider engageable with the pin in the second position of the slider, the slider being movable to a position disengaging the pin from the portion of the slider engaging the pin in the unarmed position of the slider, thereby allowing the slider to be moved via the bias means from the unarmed position.

6. The actuating device of claim 5 wherein the slider includes a first recess formed in a portion thereof; and wherein the means removably engageable with portions of the slider is defined further to include:

an actuating bar connected to the closure member,

having a portion removably engageable with a portion of the slider formed via the first recess in the slider in the first position of the slider, the slider being moved via the bias means from the unarmed position to the first position of the slider wherein the actuating bar engages a portion of the slider formed. via the first recess in the slider preventing movement of the slider via the bias meansand positioning the slider in the first position, and the actuating bar being disengaged from the portion of the slider formed via the first recess upon the opening of the movable portion of the closure member allowing the slider to be moved via the bias means from the first position of the slider to the second position of the slider wherein the pin engages the other portion formed in the slider via the slot preventing movement of the slider and positioning the slider in the second position.

7. The actuating device of claim 6 wherein the actuating bar is defined further to include a portion engageable with the slider for moving the slider to a position disengaging the pin from the slider, the actuating bar engaging the slider upon the closing of the movable portion of the closure member and moving the slider from the second position of the slider to a position of the slider disengaging the pin from the slider, thereby allowing the slider to be moved via the bias means from the second position to the thrid position of the slider.

8. The actuating device of claim 7 wherein the slider includes another slot formed through a portion thereof, having a portion engageable with a portion of the actuating arm for positioning the slider in the third position; and wherein the actuating arm is defined further to include a portion engageable with the portion of the slider formed via the last-mentioned slot for engaging the actuating bar in the third position of the slider, the .-actuating bar engaging the slider upon the closing of 9. The actuating device of claim 7 wherein the portion of the actuating bar engaging the slider in the third position of the slider is defined further as being disengaged from the slider via the opening of the movable portion of the closure member thereby allowing the slider to be moved via the bias means from the third position to the fourth position of the slider, the slider being disengaged from the alarm mechanism in the fourth position of the slider thereby activating the alarm mechanism to provide the indication of the unauthorized opening of the movable portion of the closure member.

10. The actuating device of claim 1 defined further to include:

a spacer plate connected to the alarm mechanism having a notch formed in one end thereof, one end portion of the slider being slidingly disposed in the notch formed in the spacer plate; and

wherein the bias means is defined further to include a spring disposed in the notch in the spacer plate having one end engaging the spacer plate and the opposite end engaging the slider biasing the slider toward the fourth position.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US217809 *May 19, 1879Jul 22, 1879 Improvement in alarm-locks
US1282089 *Sep 14, 1917Oct 22, 1918Feodosy LavrykCombined lock and alarm.
US1384723 *Mar 26, 1921Jul 12, 1921William KoziolSafety-lock
US1854126 *Jul 25, 1931Apr 12, 1932Ferguson David EBurglar alarm
US1859345 *Apr 2, 1931May 24, 1932Schantz Arnold AMechanical burglar alarm for home or transient use
US2691357 *Sep 29, 1952Oct 12, 1954Owen John WBurglar alarm
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4721946 *Aug 11, 1986Jan 26, 1988Zunkel Richard LDoor control device with alarm switch
US5022340 *Nov 15, 1989Jun 11, 1991Caraba Budrick SPortable mechanical burglar alarm
Classifications
U.S. Classification116/85, 116/6, 116/91
International ClassificationG08B13/08, G08B13/02
Cooperative ClassificationG08B13/08
European ClassificationG08B13/08