US1131542A - Safety-lock. - Google Patents

Description

P. OLSBN.

SAFETY LOCK.

APPLICATION FILED JUNE 3, 1913.

1,131,542. Patented Mar.9,1915.

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THE MORRIS PETERS CO. PHoro-LlTHo WASHING rON. D Lx P. OLSEN.

SAFETY LOCK.

APPLICATION FILED JUNE 3, 1913.`

1,131,542, Patented m1111915.

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THE MORRIS PETERS Cov. PHOTOYLITHO.. LvAsH/NGrON. D. C.

UNITED STATES PATIENT FFME.

.PETER OLSEN, OF COPENHAGEN, DENMARK.

SAFETY-LOCK.

Application led .Tune 3, 1913.

To all whom t may concern Be it known that I, PETER OLsEN, carpenter, a subject of the Kingdom of Denmark, residing at Struensegade 3, Copenhagen, 1n Denmark, have invented certain new and useful Improvements in Safety-Locks; and I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention has for its object a thiefproof safety-lock, especially adapted for doors and the like, and having its locking bolt locked by a number of tumblers and which lock can be opened only by turning the handle.

The invention is substantially characterizedthereby, that the tumblers, locking the locking bolt.y can only be released by engagement with the web of the key corresponding to the lock and inserted into the key-hole.

Further the improved lock is characterized by other features described in the following specification and illustrated in the annexed drawings, showing a lock constructed in accordance with the invention.

Figure l is a side-view of the lock. Fig. 2 a vertical section on line C-C Fig. l as seen in the direction of the arrow. Fig. 3 is a horizontal section on line DD Fig. l. Figs. 4 and 5 are respectively a sideand an end-view of the ordinary key, and Fig. 6 a side-view of a pass-key. Fig. 7 shows a modification of the lock Figs. 1-3. Fig. 8 is a. side-view of a modication of the improved lock, and Fig. 9 is a fragmentary front-elevational view of a modiiied detail of the lock.

In the form shown in Figs. 1-3 the tuml blers which are adapted to turn around a stationary pivot, are moved up against the web of the key, when the door-handle is turned, and are stopped in the position corresponding to the release of the locking bolt by means of said web. The movement produced by turning the handle is transferred to the tuniblers by springs, which also receive the movement produced by the continuous turning of the handle after the tumblers have been stopped by the web of the key.

rThe locking bolt 3l, which reciprocates in the lock-plate 30, has in its rear-end a bore for the lock-spring 32 and is normally Specification of Letters Patent.

Patented Mar.. 9i, 1915..

serial No. 771,480.

locked in advanced (locking) position by a number of tumblers 33 (five in the illus- 't1-ated example) which can turn around a pivot 34 iixed to the lock-plate, which tumblers are held in locking position by springs 35 (one for each of the tumblers). The rear end of each of said springs is Xed to the lock-plate and its front end to the corresponding tumbler (F ig. l). The movement of the springs and thereby of the tumblers is limited by a pin 3G. In the front edge of each is a notch 37 for the bill 39 of a hook 33 pivotally mounted in the lockplate, which bill however can only enter the notches, when the latter by the turning of the door-handle are brought in alinement with the bill, which can only happen when the key is inserted into the lock. The notches 37 are placed at different heights in the different tumblers in accordance with the web of the key, so that the locks are varied by varying the position of the notches 37. The hook 38 is provided with a rearwardly extending T-shaped arm 40 (see also Fig. 3), which coperates with a frame 4l attached to the upper face of the lockingbolt. Said frame is provided with two projections 42, one at each side of the arm 40, which projections permit the locking-bolt to be moved back only a distance corresponding to the distance between the projections 42 and the cross-bar of the arm 40, when the hook is in the position shown in Fig. 1.

.Che handle-cylinder 44 has a square bore for the handle-stem and is influenced by a spring 43. Said cylinder' carries an arm 45 (the locking bolt has a slot 46 (Fig. 3) for said arm), which has an obliquely cut upper-edge forming a rest for a roller 48 journaled in the angular levers 47, pivotally mounted on the pivot 34. The roller 48 forms a support for the tumbler-springs 35. The key 50 (Figs. 4 and 5) is inserted into the key-hole. The arm 45 has a slot 51 for a strap 52, encircling the lock-spring 32. Said strap prevents the spring from acting on the locking-bolt before the tumblers are brought into the position corresponding to the opening of the lock, and the slot 5l permits the locking-bolt to reciprocate independently of the door-handle.

The described lock operates as follows: rlhe key 50 is inserted into the key-hole 49, whereupon the arm 45 is turned in the direction of the arrow (Fig. l) by means of the handle. This causes the roller 48 to rise as the arms 47 turn around the pivot 34 thereby covering the slot of the key-hole. The roller 48 acts on the springs 58 which lift the tumblers until said latter are stopped by the web of the hey, whereupon further movement of the roller affects the springs alone. lhen all of the tumblers rest against the web of the hey all the notches 37 are in alinement with the bill 39 of the hook 38, so that said hook may be turned bach by means of its spring 53 (Fig. 1). lhen the hook is turned, its i`shaped arm 40 is turned down into a depression 54 in the trame 41, so that the locking bolt 31, which simultaneously comes under the influence of the spring 32, can be moved back, as now the cross-bar oi the arm 40 no longer rests against the projections 42 of the vframe 41. During the retrograde movement of the locking bolt the inclined face 55 of the Yframe 41 will strike the arm 40, so that the hool; is again returned to the position Fig. land released from the tumblers, which latter, when the roller 48 has passed the highest point oi the arm 45, return to the position shown in Fig. 1. The lock can not be opened by a pick lock inserted into the key-hole, as such a one will prevent the rise ot the arms 47 and thereby the turning ot the door-handle and the arm 45. 1f 'for instance it is desired that during the day time the door shall be operable by the handle alone without the use of a key, the hook 38 is turned away from the tumblers by means oli a square plate 6 having a projection 58, which plate can only be turned when the door is open and the locking bolt retired, so that a groove 57 in the upper face of the locking bolt is below the plate. W'hen in such case the plate 6 is turned 180 away from the position shown in Fig. 1, its projection 58 will cam back 38 by contacting heel 38EL of the hook, locking the latter in such a position, that the T-shaped arm 40 is lifted over the projections 42 of the frame 41, so that thereupon the locking bolt can be moved back by the handle alone.

From the inside the hook 38 may be turned away from the tumblers by a thumbpiece 59 rigid with a polygonal shait 73 passing through a corresponding opening in the hub oi hook 38, (Fig. 2) whereupon the lock can be opened by the handle alone. This is however only possible, when the hook 38 is not locked in the position shown in Fig. 1 by means of the square plate 6.

The lock may be provided with a device which maintains the locking bolt in retired position, when the door is open, but automatically releases the locking bolt, when the door is shut. The said device, which is especially adapted for doors, provided with automatic door-closers, has for its object to prevent the locking-bolt from resisting the closing of the doors. 1n the front-wall of the lock-plate is a recess for a small lever 61 mounted on a pivot 60, which lever cooperates with a spring 63 fixed to the lockplate below the locking-bolt 31 and provided with a head 62. The underside of the locking-bolt carries a projection 64.

lVhen the door is opened the spring 63 can turn the lever r1 so that the head 62 ot the spring can talie in front of the projection 64 and thereby maintain the locking bolt in the retired position. As soon as the door is shut, the lever 61 is pressed back into the lock casing (Fig. 3) so that the head 62 is moved from in front of projection 64 to release the locking bolt, which latter of course Awill be advanced by its spring 32.

Locks constructed in accordance with Figs. 1-3 may also be opened by means of a master key 65 (Fig. 6) commonly for a number of locks the pass keys of which diflier only in having different heights of their Vweb-ollsets.

Fig. 7 shows a modification in which the angular arms 47 and the roller 48 are replaced by cover-plate 66 fixed to levers 68 mounted on a pivot 67. The heads 69 of said levers act on the springs 35 and thereby on the tumblers 33, when the door-handle is turned. The underface of the arms 68 iorms a curved tace along which the upper curved face 70 of the arm 45 slides, so that the tnmblers are maintained in raised position until the handle and thereby the arm 45 are again returned to initial position.

The lock shown in Fig. 8 dilers only from the lock shown in Figs. 1-3 in that the tuinblers 33 are arranged above the hey-hole and normally supported by a pin 81 carried by a rotatory disk 80, which is normally held in the position shown in Fig. 8 by means of a projection 82 on the arm 45. )When said arm is turned by means of the handle, the pin 81 loses its support so that then the tiuralers will turn downward owing to their weight until they are stopped in desired position by the key introduced into the keyhole.

rllhe hook 38, 39 (Figs. 1-3) may be replaced by an arm 84 provided with a fence blade 83, which arm may be in iixed connection with the locking-bolt or slidably arranged on said latter.

Fig. 9 shows (see in the direction toward the iront-wall of the loch-plate) a modification oli the device (Figs. 1 and 3) for maintaining the locking-bolt in retired'position when the door is open, but which automatically releases the locking-bolt on closing the door. 1n the front-edge of the door is mounted a cross-bolt 85, which by means of a spring 86 is held in the position shown in Fig. 9 when the door is open, so that it lies infront ot the projection 64 of the lockingbolt and maintains the locking-bolt in retired position. When the door is shut, the cross-bolt is pressed inwardly by the door- 'trame and brings thereby a recess 87 in alineinent with the projection 64C, so that now the lock-spring can advance the locking-bolt.

Claims:

l. In a safety-lock for doors and the like adapted to be opened by turning of the handle, the combination of a lock-plate, a locking-bolt, a lock-spring actuating said locking-bolt, tumblers adapted to turn around a stationary pivot and normally locking the locking-bolt in locked position, a key-hole cylinder for receiving a key provided with a web for controlling the movement of said tumblers and a spring-actuated handle pivotally mounted in said lock-plate for operating the locking bolt, with means whereby said tumblers are moved toward the keyhole, when the handle is turned in one direction and stopped in the position for the release of the locking-bolt by engagement with the web of the key inserted into the key-hole.

2. ln a safety-lock for doors and the like adapted to be opened by turning of the handle, the combination oi a lock-plate a locking-bolt, a lock-spring actuating said locking-bolt, a key-hole cylinder for receiving a key and a spring-actuated handle pivot-ally mounted in said lock-plate ior operating the locking bolt, with tumblers arranged above the key-hole and adapted to turn around a stationary pivot and normally locking the locking bolt in locked position, and a support for said tumblers, which support is removed by the turning of the handle, so that the tumblers owing to their own weight can move down until they are stopped in the position for the release of the locking bolt by the key inserted into the key-hole.

3. ln a safety-lock for doors and the like adapted to be opened by turning of the handle, the combination of a lock-plate, a locking-bolt, a spring actuating said locking bolt and arranged in a bore in the rearend of said locking-bolt, tumblers, normally locking said locking-bolt in locked position, a key-hole cylinder for receiving a key provided with a web for controlling the movement of said tuinblers and a spring-actuated handle pivotally mounted in said lock-plate for operating the locking bolt, with a strap encircling said lock-spring, and connections between said strap and handle whereby the strap is moved rearwardly when the handle is turned and compresses the lock-spring in the locking-bolt before the tumblers have released said locking-bolt.

4. In a safety-lock for doors and the like adapted to be opened by turning of the handle, the combination oil a lock-plate a locking-bolt, a lock-spring actuating said locking-bolt, tumblers normally locking lthe locking bolt in the locked position, a keyhole cylinder for receiving a key provided with a web for controlling the movement ot said tumblers and a spring-actuated handle pivotally mounted in said lock-plate for operating the locking bolt, with means actuated by the initial turning ot the handle to cover the key-hole recess 'for the web of the key.

3. In a safety-lock for doors and the like adapted to be opened b v turning ot the handle, the combination of a lock-plate, a locking-bolt, a` lock-spring),- actuating said locking-bolt, tumbler. adapted to turn around a, stationary pivot and normally locking the locking-belt in locked position, a key-hole cylinder Jfor receiif'ing a key provided with a web i r controlling the movement or said tuinblers and a spring-actuated handle pivotally mounted in said lockplate tor operating the locking bolt, with springs by means oi3 which the upward movement produced by the turning ot the handle is transmitted to the tumblers and which springs absorb the excess of said movement, when the tumblers are stopped.

6. ln a safety-lock tor doors and the like adapted to be opened by turning ci the handle, the combination oit a lock-plate, a locking-bolt, a, lock-spring actuating said locking-bolt, tumblers adapted to turn around a. stationary pivot and normally locking the locking-bolt in locked position, a key-hole cylinder, and a spring-actuated handle pivotally mounted in said lock-plate for operating the locking` bolt, with a spring-actuated pivotally mounted. hook, a rearwardly extending arm on said hook proliections associated with said locking-bolt and arranged to normally engage said arm thereby preventingthe backward movement oi said locking-bolt, and notches in the tumblers, which notches by turning of the handle are brought in such a. position by means of the key inserted into the key-hole, that the hook can enter the notches and thereby release the locking-bolt.

7. ln a safety-lock for doors and the like adapted to be opened by turning of the handle, the combination or a lock-plate, a locking-bolt, a lock-spring actuating said locking-bolt, tumblers Nfor normally locking the locking-bolt in locked position, a pivotally-mounted.hook coperating with said tumblers, a key-hole cylinder for receiving a key provided with web Yfor controlling the movement et said tumblers and a springactuated handle pivotally mounted in said lock-plate for operating the locking bolt., with rotatory disk pivotally and hiddenly mounted in the lock-plate, which disk can be turned when the door is open and the locking-bolt fully retired, and which disk is prorided with a projection coperating with the tumbler-hook 'for locking said hook in positiona only lGO

8. In u safety-look for doors and the like adapted to be opened by turning of the handle, the combina-tion of :i look-plate, a locking-bolt, t look-spring actua-ting said loeking-bolt, tumblers normally looking` the looking-bolt in looked position, ft key-hole cylinder for receiving L key provided with a web for controlling the movement of said tumblers and a sp1ing-aetuztted handle pivotally mounted in said look-plate for operatingthe locking bolt, with means for maintaining the looking-bolt in the retired position when Jthe door is open and automatically releasing the looking-bolt When the door is shut.

In testimony whereof, I afiix my signature, in presence of tivo Witnesses.

PETER OLSEN. lVtnesses C. CARTER, CHAs. N ooEUsE.

Copies of this patent may be obtained for ve cents each, by addressing` the Commissioner of Patents, Washington. D. C

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