US1534584A - Doorlock - Google Patents

Description

April 21, 192s. 1,534,584

J. P. FREDRICK DooRLocK Filed April 28, 1924 2 sheets-sheet' 1 gij/5 April 21, 1925.

J. P. FREDRICK DOORLOCK Filed April 28. 1924 2 Sheets-Sheet 2 Patented Apr. 21, 1925.

UNITED STATES PATENT OFFICE.

JOSEPH P. FRIDRICK, OF CHICAGO, ILLINOIS, ASSIGNOR F ONE-HALF T0 AUGUST J. LURIE,.OF CHICAGO, ILLINOIS.

DOORLOCK.

Application lllletl April 28, 1924. Serhl No. 709,346.

To all whom t may concern.' Y

Be it known that I, JOSEPH P. FREDmcK, a citizen of the United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented a certain new andl useful Improvement in Doorlocks, of which lthe following is a full, clear, concise, and vexact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to locks, and more especially to locks for double doors such as are customarily used in garages wherein the doors are locked at the top and at the bottom of their juxtaposed vertical ed es. Y

' One object of my invention is t e provision of an easily and quickly opened fastening means for the door, such vthat a. single key may be inserted in a` conveniently located lock, the turning of the key releasing the door latches at the top and at the bottom of the door. Another object of my inventionis the provision of a supplemental handle, the operation of which is controlled by such a lock, whereby a greater force may be applied to release the latches should the turning of the key not easily release them.

These and further objects and features of my invention are set forth in the following so description of a specific embodiment thereof. In the attached drawings, which illustrate such an embodiment,

Figure 1 is an elevation of the interior side of a double door of a garage provided Y with the lock of my invention;

Figure 2 is a transverse vertical section taken on the line 2-2 of Figure 1; l

Figure'3 is a longitudinal detail section of the lock mechanism taken on the line 3 3 0f Figure 1;

Figure 4 is a vertical section taken on the line 4-4 of Figure 3, showing a rear elevation of the lock mechanism;

Figure 5 is a transverse section of the lock mechanism taken on the line 5-5 of Figure 3;

Figure 6 is a front elevation of the lock mechanism; and

Figure 7 is a detail section taken on the line 7--7 of Figure 4, showing a clamping member.

The double door here shown comprises doors 11 and 12, hinged at their opposed vertical edges to the door frame, the free ed e of the door 12 preferably bein provi ed with a strip 13 for overlying t e adjacent edge of the door 11, so that the door 12, when locked, will prevent opening of the door 11. At the top of the door 12 and adjacent to its free edge, is secured a bracket 14 upon which is pivoted a latch 15. The latch 15 is adapted to engage a stationary latch member 16, secured to the under side of the upper rail 17 of the door frame. An operating rod 18, pivoted to the latch 15, extends downwardly to a lock mechanism 19 conveniently mounted on the door intermediate its top and bottom edges. At the bottom of the door is a somewhat similar latch mechanism comprising the bracket 20, the latch 21 and the stationary latch member 22. An operating rod 23 extends upwardly from the latch 21 to the lock mechanism 19.

It is to be noted that the upper latch 15 forms a lever of the first class, vwhile the lower latch 21 forms a lever of the third class. Thus, although the upper latch must be moved downwardly to release itself, while the lower latch must be moved upwardly to release itself, both the operating rods 18 and 23 must be lifted upwardly to release the latches.-

The lock mechanism 19 is supported in a frame 24, which comprises a back plate secured by wood screws 26 to the interior side of the door l2. The wood of the door is cut away to provide room for a boss 27 projet-ting inwardly from the back plate of the frame 24. A cylinder lock 28 is screw threaded into the end of the boss 27, the lock 28 extending to the exterior side of the door. The rotatable cylinder member 29 of the lock is provided with the customary tumblers 30 and is adapted to receive the key 31. The rotatable member 29 is extended through the back plate of the frame 24 and at its end an eccentric cam 32 is pinned. If

it is desired to employ a standard cylinder i lock, the rotatable member 29 may, of course,

be formed in two parts connected to rotate together. v

The lower endl of the upper latch actuating rod 18 extends through a hole in an upper shelf 33 on the frame 24 where it is slidably journaled and carries -at its lower end a yoke 34 on which is mounted a roller `35. The weight of the actuating rod 18, the

yoke and the roller forces the latter into engagement with the cam 32, so that when the key 31 is inserted in the lock and the rotary member turned, the cam 32 will raise the roller 35 and release the upper latch. The lower latch actuating rod 23 extends through a shelf 36 at the lower `end of the frame and also through the upper shelf 33. Above the frame 24 the rods 18 and 23 are secured together by a clamp 37 comprising a metal strip bent around the rods at its ends, and fixed to the rods by set screws 38.` Turning of the key 31 will raise the lower rod 23, together with upper rod 18, to release both latches simultaneously. I prefer to provide thecam 32 with a peripheral bead 32', which coo erates with a mating groove 35 in the ro ler 35 to prevent sldeward displacement of the latter.

The device, thus far described, hasY no eX- posed parts other than the front end of the cylinder lock, and the door may be unlocked by merely inserting the key 31 in the lock and turning it a half revolution. The door may easily be unlocked with the use of one hand and with great convenience, and at the same time there is presented nothing but the forward end of the lock by means of which a thief may attempt to force or break the device. l/Vhile an efficient and yet inexpensive garave door lock is atl'orded by the device as tlius far described, I contemplate that it may be desirable, in some instances, to provide supplemental means for forcibly releasing the latches, wherethe several parts have become rusted or bent, or for other reasons work too hard to be actuated easily by the key alone. A supplemental mechanism of this nature is shown in the drawings as applied to the device previously described. Directly below the the boss 27, the frame 24 is provided with a second boss 40, within which is slidably mounted the shank of a T-shaped handle 42. A slot 43 is cut in the front face of the door, into which slot the cross head of the handle is sunken. The shank is shouldered at 44 to provide a reduced cylindrical portion rearwardly thereof. The reduced portion is again shouldered at 45 and continues rearwardly therefrom with a square cross section as indicated at 46. The square portion 46 of the shank is slidably journaled in the square bore of the bushing 47, which is, in turn, rotatably journalet in a bracket 48 extending upwardly' from the lower shelf 36 of the frame.

A second or lower eccentric cam 49 having a square opening is carried on the s nare portion 46 of the shank and is disposelil between the shoulder 45 thereof and the forward end of the sleeve 47. A coil sprinv 50 is disposed about the shank 4l and abuts the lower cam 49 and the shoulder 46 of .the frame for the swinging of the dog about its pivot 52. As shown in Figure 5, when the key is inserted in the lock and the rotatable member turned a few degrees, the edges 0f the slot 54 in the rotatable member will move the upper end of the dog a .sufiicient distance to swing its lower end out of thegroove 53. The compression spring 50 then shoots the handle 42 outwardly until the. pin 55,l and the rearward end 'of the shank contacts with bracket 48. The handle 42 may then be easily grasped by the hand and rotated without hitting the key 3l.

through a web of thel Referring to Figure 4, when the mechanism is -in its locked position, the high point of the cam 32 is lowermost, and the low point of the second cam 49 is uppermost. After the handle 42 has been released so that it ma be manually grasped, it is turned, prefera ly in the direction opposite to that in which the key is turned. Because of thc frictional engagement between the peripheries of the two cams, together with the leverage they afford, rotating the lower cam 49 will cause the upper cam 32 to be rotated in the opposite direction, thus rendering unnecessary a manual rotation of the key 31. iVhen the rotation of the handle 42 has swung the cams to their dotted line position, the rail 35 will have been carried to its upper position to release the latches. Friction between the cams 49 and 32 may be increased and their relative longitudinal movement prevented by the provision cf a groove 49 on the latter, cooperating with the bead 32 of the upper cam.

It is not necessary that the handle 42 be used except in instances where thedevice tends to bind when actuated by the key 31 alone. Functioning of the handle 42" and cam 49 is purely supplemental to that of the key 3l an( the cam 32, sincethe latter may be used entirely independently of the former. When this is done, the key 31 will swing the cam 32 away from the lower cam 49, which remains in the position of Figure 4.

To again lock the door, handle 42 is turned to lower the second cam '49 and the handle is pushed back into its slot 43. The key 3l .is then turned backwa'rdly to lower the upper cam 32 and to allow the dog to reenter the groove 53fof the shank.

While I have shown this particular embodiment of my invention, I contemplate that many changes may be made therein without departing from the spirit and scope of my invention.

What I claim'is:

'1. In a lock released, self-latching door, separate locking mechanisms for the upper and lower edges of said door each comprising a latch supported bythe door and a co-operating fastener secured to the door frame, each of said fasteners having a locking shoulder, each of said locking mechanisms comprising a cam surface for automatically raising the associated latch member and droppin it behind said locking shoulder when 'sai door is slammed shut, a lock on said door comprising a rotary member, an eccentric cam on said rotary member, a key for said lock, a single vertically reciprocable roller riding on the upper periphery of said cam, rods having operative connection with said roller and connected to said upper and lower latches, both of said rods and their associated latches being lifted vertically to unlocked position by the raising of said single roller under the action of said cam, said roller bein freely liftable from the periphery of sai cam to permit said automatic relatching of said locking mechanism when said door is slammed shut.

2. In a lock released, self-latching door, separate locking mechanisms for the upper and lower edges of said door each comprising a latch supported by the door and a cooperating fastener secured to the door frame, each of sai-d fasteners having a locking shoulder, eachof said locking mechanisms comprising a cam surface for automatically raisin the associated latch member and droppin it behind said locking shoulder when said door is pushed to closed position, a cylinder lock on said d oor comprising a rotary member, aneccentric cam on said rotary member, a key for said lock insertable in said rotary member from the exterior of the door for rotating saidY cam, a single vertically reciprocable roller riding on the upper periphery of sai-d cam, rods having operative connection with-said roller and connected to said upper and lower latches, both of said rods and said associated latches being lifted verticall to unlocked position by the raising of sai single roller under the action of said cam, said latches ravitationally relatching under the weight o said rods and said roller, said roller being liftable from theperiphery of said cam to permit said automatic relatching when said door is pushed to closed position.

3. The combination of a vertically disposed .door, a latch at one of the horizontal edges thereof for co-operating with a stationary latch member, a lock mechanism .comprising a rotatable member, an eccentric cam on saidrotatable member, a roller engagng said cam and reciprocated thereby,

a peripheral bead and a co-acting peripheral groove on said cam and roller, and means for connecting said roller and said latch.

4. The combination of a'dooi, fastening means on said door for co-operating with stationary fastening means, a lock mechanism mounted on said door and comprising a rotary member, a first cam on said member, means engaging said cam for releasing said fastening means, a handle provided with a shank supported on said door, a second cam on said shank, and means controlled by said lock mechanism for preventing effective movement of the second cam by said handle when in locked position and permiti ting movement of the second cam actuating the first cam to release said fastening means when in unlocked position.

5. The combination of a door, a fastening member therefor for cooperating with stationary fastening means, a handle havinga shank longitudinally slidable in said door transversely thereof between an inner and an outer position, a cylinder lock carried by said door, a key for said lock insert-able from the same side of said door from which said handle is operable, a rotary member actuated by the turning of said cylinder lock, actuating means Aconnecting said rotary member with said fastening member, said l cylinder lock being operable to release said fastening'member through said rotary and said actuating members independently of rotation of said handle, and means operatively connecting said handle with said actuating member whereby said handle may be used as a supplemental unlocking means where a greater unlocking effort is necessary than is available through said key.

6. The combination of a vertically disposed door for a garage, and the like, latches at the upper and lower edges of the door for co-operating with stationary latch members, a lock mechanism on said door, a cam controlled Aby said lock mechanism, means engaging said cam and actuated thereby, a rod connecting said engaging means with the upper latch, and a second rod for connecting said engaging means with the lower latch, the latch at the upper edge of the door moving downwardly to release itself from its associated member, and the latch member at the lower edge of the door moving upwardly to release itself from its associated latch member, said latches constituting levers of different classes, whereby a similar movement of the two rods will release both latches.

7. The combination of a door, fastening members mounted on the top and bottom edges of said door for cooperating with stationary fastening means to lock the door closed, a cylinder lock on said door comprising a rotary member, an eccentric cam on said rotary member, a key for said lock insertable in said rotary member from the exterior of the door for rotating said cam, a single cam follower having movement in a substantially rectilinear path riding on the upper periphery of said cam, and means connecting said single follower with both of said fastening members`r whereby rotation of said key will release said fastening members through said single follower.

8. The combination of a door, fastening members mounted' on the top and bottom edges of said door for cooperating with stationary fastening means to lock the door closed, a cylinder lock on said door com-` prising a rotary member, a back plate secured to the rear of said door having an aperture therein, said rotary member extending through said aperture, an eccentric cam on the projected end of said rotary member, a key for said lock insert-able in said rotary member from the exterior of the door for rotating said cam, a reciprocable roller engaged by said cam, and connecting means for connecting said roller with said fastening members, said back plate having guide openings for guiding the movement of said roller and said connecting means.

9. The combination of a door, fastening members, mounted on the top and bottom edges of said door for cooperating with stationary fastening means to lock the door closed, a cylinder lock on said `door comprising a rotary member, an eccentric cam on said rotary member, a key for said lock insertable in said rotary member from the exterior of the doorfor rotating said cam, a back plate secured to the rear of said door having top and bottom walls projecting from said plate above and below said eccentric cam, said top and bottom walls having guide openings therein, means mounted for reciprocation in said guide openings and having operative connection with said fastening members for releasing the same, and

a follower roller mounted on said last-named 46 means and engaged by said cam.

l0. The combination of a door, fastening members mounted on the top and bottom edges of said door for cooperating With stationary fastening means to lock the door closed, a cylinder lock on said door comprising a rotary member, an eccentric cam on said rotary member, a key for said lock insertable in said rotary member from the exterior of the dooi for rotating said cam, a follower roller engaged by said cam, rods connecting with said fastening members and adapted to be actuated by the movement of said roller, and adjustable means connecting said rods with said roller whereby the effective lengths of said rods may be increased or diminished.

11. In a lock released, self-latching door, the combination of locking mechanisms for the upper and lower edges of the door, a lock on said door comprising a rotary member, an eccentric cam on said rotar member, a single vertically reciprocable ro ler riding on the periphery of said cam, and rods having operative connection with said roller and connected to said upper and lower locking mechanisms, bothV of said rods being lifted vertically to unlocked position by the raising of said single roller under the action of sai-d cam, said roller being freely liftable from the periphery of said cam to permit automatic relatching of said locking mechanisms when said door is moved to closed position.

In Witness whereof, I hereunto subscribe my name this 14th day of April, 1924.

JOSEPH P. FREDRICK.

Witnesses:

HELEN G. DREINIAK, HATTIE R. SoHooLEa.

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