Doorlock

Application filed April 28, 1924. Serial No. 709,346.

To dll whom it may concern:

Be it known that I, Joseph P. Fredrick, a citizen of the United States, and resident of Chicago, in the county of Cook and State 6 of Illinois, have invented a certain new and useful Improvement in Doorlocks, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of 10 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 bot15 tom of their juxtaposed vertical edges.

One object of my invention is the provision of an easily and quickly opened fastening means for the door, such that a single key may be inserted in a conveniently located 20 lock, the turning of the key releasing the door latches at the top and at the bottom of the door. Another object of my invention is the provision of a supplemental handle, the operation of which is controlled by such a ²⁸ 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 35 with the lock of my invention;

Figure 2 is a transverse vertical section taken on the line 2—^c2 of Figure 1;

Figure 3 is a longitudinal detail section of the lock mechanism taken on the line 3—3 40 of 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 45 mechanism taken on the line 5—5 of Figured;

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

Figure 7 is a detail section taken on the BO 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 edge of the door 12 preferably being pro- BO vided with a strip 13 for overlying the 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 60 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, 65 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, 70 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, while the 75 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 80 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 85 of the door 12. The wood of the door is cut away to provide room for a boss 27 projecting inwardly from the back plate of the frame 24. A cylinder lock 28 is screw threaded into the end of the boss 27, the 90 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 95 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 100 together.

The lower end 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 105 end a yoke 34 on which is mounted a roller fi

1,534,884

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 5 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 10 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 15 the lower rod 23, together with upper rod 18, to release both latches simultaneously. I prefer to provide the. cam 32 with a peripheral bead 32', which cooperates with a mating groove 35' in the roller 35 to pre20 vent sideward displacement of the latter.

The device, thus far described, has no exposed 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 25 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 30 which a. thief may attempt to force or break the device. While an efficient and yet inexpensive garage door lock is afforded by the device as thus far described, I contemplate that it may be desirable, in some in35 stances, to provide supplemental means for forcibly releasing the latches, where the 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 slid45 ably 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 cylin50 drical 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 j·» journaled in the square bore of the bushing 47, which is, in turn, rotatably journaled in a bracket 48 extending upwardly from the lower shelf 36 of the frame.

A second or lower eccentric cam 49 hav⁶⁰ ing a square opening is carried on the square portion 46 of the shank and is disposed between the shoulder 45 thereof and the forward end of the sleeve 47. A coil spring 50 is disposed about the shank 41 and abuts 5® the lower cam 49 and the shoulder 46 of the handle shank 41, to urge the handle 42 outwardly from its slot 43. Outward movement of the handle, however, is prevented by a dog 51 pivoted on a pin 52 extending longitudinally through a web of the ⁷⁰frame which spaces the bosses 27 and 40. The lower^- end of the dog 51 projects into an annular groove 53 in the shank 41, while its upper end enters a slot 54 in the rotatable member 29. A suitable slot is provided in ⁷⁵the 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 of the slot 54 in the rotatable member ⁸⁰will move the upper end of the dog a sufficient distance to swing its lower end out of the .groove 53. The compression spring 50 then shoots the handle 42 outwart ly until the pin 55. and the rearward end of the ⁸⁵shank contacts with bracket 48. The handle 42 may then be easily grasped by the hand and rotated without hitting the key 31.

Referring to Figure 4, when the mechanism is in its locked position, the high point of ⁹⁰the 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 may be manually grasped, it is turned, preferably in the direction opposite to that in ⁹⁵which the key is turned. Because of the 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 ro- ^I'^::1tated in the opposite direction, thus rendering unnecessary a manual rotation of the key 31. When the rotation of the handle 42 has swung the cams to their dotted line position, the rail 35 will have been carried 1⁹⁵to 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 of a groove 49' on the latter, cooperating with no the bead 32' of the upper cam.

It is not necessary that the handle 42 be used except in instances where the device tends to bind when actuated by the key 31 alone. Functioning of the handle 42 and nrcam 49 is purely supplemental to that of the key 31 and the cam 32, since the 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 ϊ-° 49, whic.i 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 ¹²⁵key 31 is then turned backwardly to lower the upper cam 32 and to allow the dog to reenter the groove 53 of the shank.

While I have shown this particular embodiment of my invention, I contemplate

1,634,584 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 door, fastening means on said door for co-operating with 70 stationary fastening means, a lock mechanism mounted on said door and coinprising a rotary member, a first cam on said member, means engaging said cam for releasing said fastening means, a handle provided 75 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 permitting 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 sta- 85 tionary fastening means, a handle having a 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 insertable !’0 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 connecting said rotary member with said fastening member, said 05 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 dis- 105 posed 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 by said lock mechanism, means en- no gaging 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 115 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 le- 120 vers 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 125 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 in- 130 that many changes may be made therein without departing from the spirit and scope of my invention.