US3120970A

US3120970A - Dead locks

Info

Publication number: US3120970A
Application number: US133260A
Authority: US
Inventors: Tucker Theodore
Original assignee: Individual
Current assignee: Individual
Priority date: 1961-08-22
Filing date: 1961-08-22
Publication date: 1964-02-11
Anticipated expiration: 1981-02-11

Description

T. TUCKER Feb. 1l, 1964 DEAD LOCKS Filed Aug. v52,2, 1961 INVENTOR 725000@ T/ c/ER BY United States Patent Oiiice 3,l2@,97 Patented Feb. Il, 1964 3,120,970 DEAD LCKS Theodore Tucker, 1&4@ FJ. 13th St., Brooklyn, NX. Filed Ang. 22, lgll, Ser. No. 333,26) S laims. (Cl. 292-39).

This invention relates to lock devices of what is generally referred to as the dead lock-type, namely wherein the bolt, or bolts, of the lock are moved into a positive engagement with the bolt engaging plate of the lock in securing a door or other closure against forcible disengagement, thereby rendering the lock substantially jimmy-prooi. More particularly, the invention deals with a loch structure of the character described, wherein the bolt, or bolts, of the lock are moved in two directional paths in movement or" the lock from an open to a closed dead lock position.

Still more particularly, the invention deals with a lock structure employing a slidable bar controlling and guiding movement of the bolts from the open to the locked position.

The novel features of the invention will be best understood from the following description, when talren together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which, the separate parts are designated by suitable reference characters in each of the views and, in which:

FIG. 1 is a diagrammatic face View of a lock made ccording to my invention, with the covers of the lock parts removed and with parts of the construction broken way and in section, the lool: being illustrated in its open position.

FIG. 2 is a partial View, generally similar to FIG. l, illustrating one or" the bolts of the lock in its locked position.

FIG. 3 is an enlarged sectional plan view of part of a gear and rack casing of the loclr, with parts of the construction shown in elevation and illustrating the mechanism of the casing in the locked position of the lock, as seen in FlG. 2.

FIG. 4 is an enlarged section on the line 4-4 of FlG. 2; and

FIG. 5 is an enlarged sectional View on the broken line 5 5 of FIG. 2.

In illustrating one adaptation and use of my invention, I have diagrammatically shown the two component parts of a loclz without reference to detail as to securing of the parts together or the parts to respective supports and, further, without any detail showing of the manually operated means for actuating the lock, these things being all generally well-kr1own in the art and, thus, the present showing is simplified to the end of simply illustrating the operative mechanisms of the lock.

In the drawing, lil represents the main lock casing and ll represents the bolt receiving and engaging plate or member. Usually, the latter is secured to a doorframe or fixed support; whereas, the casing is secured to the door. As above stated, the manner of attachment has been omitted for simpliiication in the present showing.

The casing lil, generally rectangular in form, comprises a plate l2 having raised peripheral walls on two sides, as indicated at 13 in FIG. 1 of the drawing and at one end, as indicated at 14. The casing lil also includes two raised substantially triangular corner bearing portions l5 clearly shown at the left of FIG. 1 of the drawing. Each side wall 13 includes an inwardly projecting shoulder portion 16, one of which is seen in section in FIG. 5. These shoulder portions include, adjacent the open end of the casing lll, upstanding stops 17, checking movement or a slide bar 1S of the lock in movement thereof in the direction of the open end of the casing lll, as later described.

The bottom wall l2 of the casing 1) has, centrally and longitudinally thereof, a recess 19 in which a gear and raclc casing 2li of the lock is arranged.

As diagrammatically illustrated in FlGS. 4 and 5 of the drawing, the open face or" the casing lil is closed by a cover 2l which seats upon the

walls

13, 14, 15 and 17 and is suitably fixed thereto. As previously stated, the showing of these attachments has been omitted to simplify the present illustration.

Turning now to the plate or member 1l, this member could be described as an elongated box, generally of U-shaped cross-sectional form and open at one side, namely the side facing the casing itl. Considering FlGS. l and 2 of the drawing, the plate or member 11 comprises a bottom wall 22, upstanding side walls 23, an end wall 24- and a top closure plate 25, note FIG. 4 ot the drawing. This plate includes, on its inner surface 26 adjacent the side walls Z3, bolt engaging lugs 27 having bevelled inner surfaces 2S, as clearly seen in FIG. 4 ot the drawing. The lugs 2'7 are diagrammatically illustrated in section in FIGS. 1 and 2 of the drawing, the section being taken substantially in alinement with the surface 26.

The spacing between inner opposed surfaces 23 of the lugs 27 is such as to freely receive the two lock bolts 29 of the lock in the initial one directional movement of the bolts, preparatory to the second directional movement of the bolts in engagement with the lugs, as illustrated in FGS. 2 and 4 of the drawing.

As both bolts 29 are of the same construction, the brief description of one will apply to both. Each bolt 29 has on its upper surface, as viewed in FIG. l of the drawing adjacent its outer end, a transverse recess 39, one wall of which is bevelled, as clearly seen at 3l in FIG. 4 of the drawing, to establish engagement with the bevelled surface 2S of each of the lugs 27. Each bolt 29 also includes, on its lower surface, a transverse recess 32 of an irregular contour, as illustrated in partial section in FIG. 1 of the drawing on one of the bolts, these recesses providing free movement of two similar bolt actuating levers 33 pivoted to each bolt, one of these pivots being clearly illustrated at 34 in FIG. 4 of the drawing, the pivots also being diagrammatically illustrated in FIG. 1 or" the drawing.

Freely rotatable on suitable screws or other supports on each of the bolts Z9 are three pairs oi anti-frictional rollers, one pair being indicated at 35 at the right of FlG. l, a generally similar pair being indicated at 36, the two

pairs

35 and 36 operating upon side surfaces 18 of the bar llr, as clearly illustrated in FlG. 4 of the drawing, in which ligure one roller of each of the pairs 35', 36 is shown and the screw axis for these rollers is indicated at 3'/ and 33, respectively in FIG. 4. The only difference between the pairs of rollers 35 and the pairs of rollers 36 lies in the fact that one of the rollers in the pairs 36 protrude beyond the side surface of the bolt 29 to operatively engage the bearings 15, as clearly seen in FIG. l of the drawing, these rollers being identified by the reference numeral 36.

At 39 is shown the third pair of rollers on each of the bolts, the latter being arranged at the terminal inner end of each bolt. One of the rollers 39' of the latter pair projects beyond a side and end surface of the bolt to operatively engage one of the bearings 15 when the bolt is in the position shown in FIG. 1, as well as in the position shown in FIG. 2; whereas, the other rollers 39 in each pair 39 projects only from the inner end of the bolt to operatively engage the bearing 15 when the bolt is in the position shown in FlG. 2. The bearings 15 serve to guide both of the bolts, first, in their movement longitudinally in the casing 1f), in other words, from left to right in passage of both of the bolts into the plate or member 11, as well as in guiding the bolts in their second lateral movement, bringing the ends of the bolt into operative engagement with the lugs 27, as clearly shown in FIGS. 2 and 4 of the drawing.

In the first aforesaid movement of the bolts, the slidingy bar 18 is guided between the two pairs of

rollers

35, 36 which maintains the two bolts in proper alinement in the casing and in the plate or member 11 and this movement is checked by the stops 17 engaged by the righthand side surface 18 of the bar 13. This engagement is clearly shown in FIGS. 2 and 4 of the drawing.

The corner portions of the bar 18 have upwardly projecting bearing lugs 18, note FIGS. 1 and 4, engaging the inner surface of the closure plate 21 in maintaining the bar in position on the upper surfaces of both bolts and in engagement with the two pairs of

rollers

35 and 36, as will clearly appear from a consideration of FIG. 4 of the drawing.

The bolts 29 are actuated by the curved levers 33, these levers having a common pivotal mounting 4f) on a block 41 fixed to a slide 42, generally L-shaped in cross-sectional form, as noted in FIG. of the drawing, the slide operating in the casing 2f), this casing generally being O-shaped in cross-sectional form.

Suitably fixed to the short leg of the slide 42 is a rack bar 43 which extends into one side of the block 41, as indicated at 44 in FIG. 3 of the drawing. Parts of the long leg of the slide 42 are shown in elevation at 42 in FIG. 3 to clearly illustrate arrangement of the slide in the casing 19 and engagement of the pivot 4@ with the slide. Arranged in the chamber of the casing 26 beneath the long leg 42 of the slide is a gear or pinion 45 keyed to an operating shaft 46 which projects outwardly beyond the wall 12 of the casing 1t), as illustrated, in part, in FIG. 5 of the drawing. One side of the casing 20 is apertured, as seen at Ztl', to facilitate assemblage of the pinion or gear 45 with the shaft 46. The top wall of the casing Ztl has an elongated aperture Z6 for guidance of the pivot 40, as clearly noted in FIG. 2 of the drawing.

From the foregoing, it will be apparent that, in rotation of the shaft 46 by any suitable means, usually manually operated, in one directional rotation of the shaft 46, the bolts 29 can be moved from the position shown in FIG. 1 into the position shown in FIG. 2 and, in the reverse directional movement of the shaft 46, the bolts will first move from the position shown in FlG. 2 and return to the normal inoperative position shown in FIG. l. In the latter position, the engagement of one side edge of the bar 18 with the bearings checks this inward or retracted movement of the bolts. Final movement of the bolts into the operative position shown in FIG. 2 is controlled by engagement of outer sides of the bolts with inner surfaces of the shoulders 16, as clearly illustrated in FIGS. 2 and 5 of drawing. It will be understood that, in the two rightangle movements of the bolts, as and when the bar 18 strikes the stops 17, the bolt ends are disposed within the member 11 and, in the continued rotation of the shaft 46, the levers proceed to move the two bolts laterally in the opposite direction to bring the same into operative engagement with the lugs 27. It will, thus, be apparent that devices of the type and kind under consideration can be utilized in establishing coupling and uncoupling engagement between two different members or supports of any type or kind. This is particularly advantageous when the two directional movements of the bolts are desired in establishing the coupling and uncoupling engagement.

For purposes of description, the casing 10 may be said to comprise the bolt part of the device and the member 11 may be said to comprise the bolt engaging part in establishing the coupling engagement between said parts. Further, the bar 1S may be said to comprise the bolt alining and direction control element; whereas, the casing 19, including its associated parts, such as the rack and

gear

43, 45 and the arms 33, may be said to define the bolt actuating means.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A device of the character described comprising a bolt part and a bolt engaging part, the first named part comprising a casing, a bolt movably mounted in the casing, means for actuating the bolt to first move the bolt into the second named part in one directional movement of the bolt and then laterally in said part in a second directional movement of the bolt in moving part of the bolt into operative engagement with a lug in the second named -part in retaining the two parts in coupled relationship to each other, said casing including a bolt alining and directional control element rnovably supported in the casing and movable with the bolt in the first named directional movement of said bolt, said bolt actuating means comprising a lever, one end of which is pivoted to the bolt, the other end of the lever being pivoted to a slide, and means including an operating shaft for moving said slide longitudinally of the casing.

2. A device as defined in claim 1, wherein said bolt includes anti-frictional means operatively engaging opposed surfaces of said element in both directional movements of said bolt.

3. A device as defined in claim 2, wherein the bolt includes other anti-frictional means operatively engaging a bearing portion in the casing in both directional movements of Iche bolt in the casing.

4. A device as defined in claim l, wherein said element comprises a bar, the bolt having means engaging opposed surfaces of the bar, and the casing having means for checking movement of said bar in controlling the first directional movement of the bolt in said casing.

5. A device as defined in .claim 4, wherein said last named means guides Ithe Vbolt on the bar in the second directional movement of said bolt.

6. A dead lock of the character described comprising a rectangular casing, a pair of bolts movably mounted in said casing and adapted to project through one end thereof, a bolt engaging member at said end of the casing, into which the bolts are adapted to be projected, said member having a pair of bolt engaging lugs, a bar slidably mounted in the casing, means placing the bolts in operative engagement with said bar, bolt actuating means movably mounted in the casing for moving said bolts first -in one direction into said member, said bar moving with the bolts in said first directional movement thereof, means on the casing engaging the bar checking said first directional movement of the bolt, continued movement of said actuating means moving the bolts in a second direction in said member to engage said lugs and longitudinally of said bar, said first named means maintaining alinement of the bolts in both directional movements thereof, the second named means comprising a slide movable longitudinally of the casing, means including an operating shaft for actuating said slide, a pair of levers having a common pivot on the slide, one lever being pivoted to one bolt, the other lever being pivoted to the other bolt and means in the casing for guiding said slide in its movement therein.

7. A lock as defined in claim 6, wherein the casing includes two corner bearing portions, said `iii-st named means including two pairs of anti-frictional devices on each bolt operatively engaging said bar, and another pair of anti-frictional devices on each bolt operatively engaging said bearing portions in guidance of the bolts in both directional movements thereof.

8. A lock as defined in claim 7, wherein means is employed for retaining said bar in operative engagement with the rst named means in both directional movements of the bolts in the casing.

References Cited in the le of this patent UNITED STATES PATENTS 1,186,171 Cohon etal June 6i, 1916 2,002,014 Kemp et al May 21, 1935 2,240,400 Johnson Apr. 29, 1941

Claims

1. A DEVICE OF THE CHARACTER DESCRIBED COMPRISING A BOLT PART AND A BOLT ENGAGING PART, THE FIRST NAMED PART COMPRISING A CASING, A BOLT MOVABLY MOUNTED IN THE CASING, MEANS FOR ACTUATING THE BOLT TO FIRST MOVE THE BOLT INTO THE SECOND NAMED PART IN ONE DIRECTIONAL MOVEMENT OF THE BOLT AND THEN LATERALLY IN SAID PART IN A SECOND DIRECTIONAL MOVEMENT OF THE BOLT IN MOVING PART OF THE BOLT INTO OPERATIVE ENGAGEMENT WITH A LUG IN THE SECOND NAMED PART IN RETAINING THE TWO PARTS IN COUPLED RELATIONSHIP TO EACH OTHER, SAID CASING INCLUDING A BOLT ALINING AND DIRECTIONAL CONTROL ELEMENT MOVABLY SUPPORTED IN THE CASING AND MOVABLE WITH THE BOLT IN THE FIRST NAMED DIRECTIONAL MOVEMENT OF SAID BOLT, SAID BOLT ACTUATING MEANS COMPRISING A LEVER, ONE END OF WHICH IS PIVOTED TO THE BOLT, THE OTHER END OF THE LEVER BEING PIVOTED TO A SLIDE, AND MEANS INCLUDING AN OPERATING SHAFT FOR MOVING SAID SLIDE LONGITUDINALLY OF THE CASING.