US1800707A - Lock - Google Patents

Description

A. WARTIAN April 14, 1931.

LOCK

Filed June 4, 1929 3 Sheets-Sheet l INVENTOR. flmyzm WQ Z'ZZQI? A TTORNEY.

April 14,- 1931. A WAR-HAN 1,800,707

LOCK

Filed June 4. 1929 5 Sheets-Sheet 3 INVENTOR. fim z'm Wa rtzlan.

ATTORNEY. v

Patented Apr. 14, 1931 PATENT OFFICE AVAGIM WARTIAN, F DETROIT, MICHIGAN LOCK Application filed June 4, 1929. Serial No. 368,293.

This invention relates to improvements in locks, and aims, among other things, to provide a lock wherein a latch bolt is adapted to be actuated either by the longitudinal movement of a pusher extending through a handle substantially at right angles to the path of travel of a latch bolt, or by the rotation of a key by which a locking bolt is also operated; and wherein the locking mech- 1o anism is so arranged that with one key, parts may be turned and the latch bolt or the looking bolt actuated, and with another key certain other parts in the mechanism may be so turned as to render the first key inoperative.

With these and various other objects and advantages in view which will become apparent as the specification proceeds, the invention is hereinafter more fully described with the aid of the accompanying drawings,

in which:

Figure 1 illustrates an end elevation of the lock in position in a door, and

Figure 2 shows a front elevation thereof.

Figure 3 is a side view of the lock with 95 one side of its casing removed and the locking bolt retracted.

Figure 4 is a partial side view of the invention with one side of the casing, the looking bolt cover plate and one of the tumblers a0 removed.

Figure 5 is a section on the line 5-5 of Figured.

Figures 6 and 7 are partially assembled views showing a part of the casing with the rotatable buffer plate turned so as to render the ordinary key inoperative.

Figure 8 is a section on the line 88 of Figure 6.

,Figure 9 is a section on the line 99 of Figure 7, and

Figure 10 is a section on the line 101O of Figure 1.

Referring to the drawings, 1 designates a lock casing having projections 16 integral with one of its ends 1a, which are adapted to be secured as by screws 2a to a door '2 in the usual manner. Through the end 111. of the casing three apertures 3, 4 and 5 are provided. The aperture 3 permits movement of a locking bolt'6 therethrough; through the aperture 4 a latch bolt 7 is adapted to move, and into the aperture 5 one end of a lever 8 extends so that its extremity is pivotally movable therein about a pin 9 which projects inwards from one side of the casing 1. In the side of the casing openings 10 and 11 are formed and 1d designates a cover on the casing 1.

Spaced from the side of the casing 1 a by a portion of the door 2, and mounted on one side of the latter, is a faceplate 12. Pivotal on the inner side of the faceplate is a rocker 13,- the free end of which extends through the cover opening 10. Through a tubular bearing 14 which forms a portion of the handle 15 on the faceplate apusher 16 is axially movable. The latter has an offset inner end 17 which is adapted to engage the rocker 13 intermediately of its length and cause the outer end to swing in the casing 1 through the opening 10.

In the casing 1 is a bifurcated guide 18, and 19 is a sliding frame having an extension 20 of lesser height in which the guide 18 projects. Against the end of the frame remote from the extension 20 one end of a spring 22 is so arranged as to tend to move the sliding frame 19 and its extension towards the aperture 4 and to bring one end of the frame into contact with the said bifurcated guide 18. The free end of the rocker 13 terminates in the sliding frame 19 and movement of the rocker 13 caused by pressing the pusher 16 inwards causes the said frame 19 to move against tension of the spring 22 and away from the aperture 4. When pressure on the pusher 16 is released the spring 22 causes the sliding frame 19 to move towards the aperture 4 thereby moving the rocker 13 and causing the latter to move the pusher back into its outwardly extending position.

The lever 8 at its endremote from the aperture 5 is provided with two recesses 23 and 23a either of which is adapted to engage a projection 24 on the side of the casing 1." A tongue 25 also extends laterally from that end of the lever 8 so as to lie in a slot 26 formed in the side and end of the slidingframe 19 when the'projection 24 engages the 13 sis recess 23. When the tongue extends through the slot 26 into the sliding frame it obstructs movement of the rocker 1 3 and thus renders the pusher inoperative. A coil spring 9a is arranged around the pin 9 to hold the lever 8 in position.

Integral with the latch bolt 7, which is slidable in the aperture 4, and extending inwardly therefrom, is a shaft 27 which passes between the bifurcations of the guide 18 and through a gap 28 formed in the adjacent end of the sliding frame 19. The end of the shaft remote from the latch bolt is enlarged so that it remains within the said frame 19, and around the shaft between the latch bolt and a washer 7a thereon which is adapted to lie against the guide 18 is a helical spring 29 which tends to hold the said bolt in outwardly extending position from the sliding frame and also pulls the latter towards the opening 4 in unison with the spring 22. Thus it will be seen that inward pressure on the pusher normally retracts the latch bolt 7 and that' by movement of the lever 8 the pusher may be rendered inoperative. Moreover the latch bolt 7 is free to be forced inward by contact with a striker plate (not shown) without moving the sliding frame 19.

On the inner site of the casing 1 are two guide pins 30 and 31, the former of which is provided with an enlargement 30a adjacent the casing. The locking bolt 6 slidable in the aperture 3 has a plate 32 integral with it. Through the plate 32 slots 33 and 34 are formed to receive the pins30 and 31, and to permit movement of the plate thereon as the locking bolt is moved back and forth through the aperture 3. The sides of the aperture 3 and the enlargement 30a of the guide pin-30 hold the bolt 6 and plate 32 spaced from the side of the casing 1 substantially parallel with which the plate 32 lies. On-one side of the plate 32 tapped bosses 35 and a lug 36 are provided. Rotatably mounted on the pin 30 adjacent the plate 32 is a buffer plate 37 having a radial slot 38 therein adapted to receive the lug 36 when the locking bolt is retracted, and a plurality of uniformly spaced peripheral flutes 39, the purpose of which will behereinafter described.

Extending from the inner side of the casing 1 are a plurality of drilled and tapped bosses 40, 41 and 42 the upper ends of which are substantilly flush with the upper sides of the casing 1. Into these holes screws (not shown) are inserted to hold the casing cover 1d in position. On a pin 43 projecting from the inner side of the casing 1 a guard plate 44 is pivotally arranged, which has a slotted opening 45 therethrough for the passage of the guide pin 30. One margin 44a of the guard plate 44 has a downturned edge in which a slot 44?) is formed to engage a peripheral section of the buffer plate 37 be tween two of its adjacent flutes 39 and thus movement of the cover with the locking bolt plate 32. Through the cover, holes are provided over the tapped bosses 35 for the insertion of screws 51. On the cover 47 are two projections 52 and 53, on the former an upper tumbler 54 is pivotally arranged, and 55 denotes a spring secured to the said upper tumbler having its outer extremity bearing against the other projection 53. This spring tends to hold the upper tumbler in such position that one of its marginal recesses 56 or 57 engages the guide pin 31 and holds the locking bolt against movement.

Pivotally mounted on the inner side of the casing 1 are two dogs 58 and 59. One end of the dog 58 is adapted to contact one end of the extension 20 of the sliding frame 19 and to move it away from the aperture 4, so that the latch bolt 7 is retracted, and the opposite end of the dog 58 is adapted to be moved by the dog 59. A projection 60 on the casing acts as a stop to limit the movement of the outer extremity of the dog 58' which strikes the extension 20, and that portion of the dog is normally held between the said stop 60 and the extension. The dog 59 at its end 59a remote from the dog 58 is adapted to be moved by a locking mechanism hereinafter described. Thus the sliding frame 19 and the latch bolt 7 are adapted to be actuated by movement of the dog 59.

Extending, over portions of the dogs 58 and 59 and arranged between them and the lockin boltplate 32 a lower tumbler 61 is pivota ly arranged on a pin 62 extending through and secured to the said plate 32. The pin 62 is substantially in alignment with the pin 52 on which the upper tumbler 54 is pivotally' mounted. Integral with the lower tumbler 61 is a pin 63 the outer end of which engages a hole 64 in the upper tumbler 54. Thus the two tumblers swing together about their aligned axes. Opposed marginal portions 61a. and 54a of the tumblers are inturned towards one another.

In the opening 11 of the casing 1 one end of a cylinder 65 is suitably secured. A plug 66 extends through the cylinder. 65 'and' is provided with radial holes 67 o posite corresponding radial holes 68 in t e cylinder for the usual tumbler pins 69 and 70 and.

springs 71. In the plug is a usual key slot 72, and at its inner endis a peripheral groove 73 into which marginal portions of a twopi'ece split washer 74, which covers the end of the cylinder, extends. A distance piece 75 usually rests on the split washer 74 and has a pin 76 secured to it which projects through one of the washer portions and into an aperture 77 formed longitudinally in the cylinder 65. This pin 76 has an enlarged head at its outer end, and around it between the head and the underside of the washer portion through which the pin passes a helical spring 78 is arranged around the latter. This spring tends to hold the distance piece against the washer portions 74. Mounted on the distance piece so as to be rotatable thereon but held against independent axial movement is a cam 79. The latter is connected tothe plug 66 by pins which project into holes 80a in the said plug. 81 de; notes a retaining ring on the washer portions having screws 81a passing through it and also through the said washer portions and taking into the inner end of the cylinder 65.

When the short key 82, shown in Figure 9, is inserted in the key slot 72 the cam 79 turns on the distance piece 75 and the latter remains against the washer portions 74. If, however, a long key 83 is inserted in the key slot, as shown in'Figure 8, the distance piece is pushed away from the washer 74 and the cam 79 is rotated at a different level so that it comes in contact with different portions of the lock mechanism. When the long key 83 is employed and the distance piece 75 is moved the spring 78 becomes compressed and returns the distance piece and the catch to their normal position, shown in Figure 9, as soon as the key is withdrawn.

When the short key 82 is turned the cam 79 contacts the inbent margin 61a of the tumbler 61, and, on account of the connection between the said tumbler and the upper tumbler which is hereinbefore described movement of the lower tumbler 61 causes the said upper tumbler to move also, and in such a manner that the marginal recess 56, or 57, be comes disengaged from the guide pin 31 and the plate 32 and cover 47 are permitted to move. As the cam 79 continues to turn it contacts one edge or the other of an outwardly flared slot 32a in the plate 32 and causes the latter to move thereby moving the bolt 6.

84 and '85 designate two projections on the plate32 by which the dog 59 is moved pivotally by movement of the locking bolt 6, so that when the latter is projecting forwardly the dog 59 is in such position that it cannot be reached by the cam 79. When the locking bolt is retracted as shown in Figure 3 movement of the cam 79 in the direction indicated moves the dog 59 and through it the dog 58 which latter in turn retracts the latch bolt 7. It will be further noted that movement of the locking bolt 6 and the plate 32 can only occur when the buffer plate 37 is so positioned that the lug 36 can move into the radial slot 38.

Again the key. 83 can onlybe turned after the locking bolt 6 has beengnoved into looking position because when the bolt 6 is in retracted position the lug 36 in the slot 38 prevents rotation of the buffer plate 37. The key 83 moves the cam 79 into the plane of the guard plate 44 and the butter plate 37. When the cam 7 9 is turned by the key 83 the guard plate 44 is first moved so that its marginal slot 446 disengages a peripheral section of buffer plate 37 between two adjacent flutes 39, and further movement of the catch engages the buffer plate between two other adjacent flutes modifications as fall within the scope of the appended claims.

What I claim as my invention and desire to secure by Letters Patent is:

1. In a lock, the combination of a casing having apertures therethrough, a latch bolt slidable through one of said apertures, a sliding frame in said casing, a lever pivoted in said casing having one extremity movable in another casing aperture, a rocker extending through a third casing aperture into said sliding frame by which the latter is adapted to be so moved that it retracts said latch bolt, means for moving said rocker, said frame having a slot formed therethrough, the other extremity of said lever having two recesses therein, a projection in said casing adapted to engage either recess, means for holding either recess against accidental disengagement from said projection, and a lateral tongue on said lever adapted to project through the sliding frame slot when one recess is in engagement with said projection and to hold said rocker immovable in said sliding frame.

2. In a lock, the combination of a casing having apertures therethrough, a latch bolt slidable in one aperture, a shaft integral with said latch bolt, a sliding frame through one end of which said shaft extends, means on said shaft holding its extremity within said sliding frame so that the former is moved when the latter moves in one direction, a spring around said shafttending to hold the latch bolt in extended position, a face-plate having an opening therethrough spaced from said casing and adapted to be mounted on one side of a door, a pusher movable axially through said opening, a rocker pivoted on the inner side of said faceplate extending through one casing aperture into said slidin frame,the latter being adapted to be\so moved by said rockers-that it retracts said latch bolt,

and a lever pivoted in said casing having one extremity extending into another casing aperture, said lever being so positioned that when it' is moved to one position it holds said rocker immovable.

3. In a lock, thecombination of a casing. having pinstherein and an aperture therethrough, a locking bolt movable through said aperture, a plate on said-locking bolt having a marginal recess and slots therethrough through which said pins project, tumblers one on each side. of said plate pivotal about aligned axes, a spring connected to one tumbler adapted to hold the latter in engagement with one of said pins and thereby prevent movement of said latch bolt, a lock cylinder mounted in said casing, a plug rotatable by a key in said cylinder, a cam rotatable with said plug adapted to engage the other tumbler and swing both tumblers so that the first named tumbler moves out of engagement with its pin, and said cam being also adapted to engage one side or the other of the marginal recess in the plate and move the latter in one direction or the other.

4. In a lock, the combination of a casing having an aperture therethrough, a locking bolt slidable through said aperture, a plate integral with said bolt having openings therethrough, pins in said casing extending throughcsaid openings, a lug on said plate, a butler plate having a slot therein rotatable on one of said pins, said slot receiving said lug when the lockin bolt is retracted, and said lug being out o engagement with said slot when said locking bolt is extended outwardly, a cylinder mounted in said casing, a plug rotatable with a key in said cylinder, a cam rotatable with said .plug adjacent the innerend of the latter, means on said plate for engaging said cam so that the locking bolt may be moved in either direction by the rotation of said cam, said cam being also adapted to turn said bufier plate when said locking bolt is outwardly extended so that the latter cannot be retracted until said bufier plate is turned back to such position that the lug on the plate may enter said slot.

5. In a lock, the combination as described in claim 4 wherein the cam is axially movable with a key relative to said plug so that said cam may be turned in one plane to cooperate with the locking bolt plate, or in another plane to coact with the rotary buffer plate.

6. In a lock, the combination as described in claim 4 wherein a guard plate is pivoted on the locking bolt plate and normally adapted to hold the butter plate against rotation, and the crm is movable axially with a key relative to the plug so that the cam may be turned in one plane to cooperate withthe locking bolt plate and move the lbcking bolt, or in another plane to coact with the guard plate and said bufier so that it first releases the latter from the former and then turns the latter.

7. In a lock, the combination of a casing having an aperture therethrough, a locking bolt movable through said aperture, a plate integral with said locking bolt, a rotatable tatable with the latter, spring means tending to hold said cam adjacent said plug, said plug being adapted to be turned by the shorter key so that said catch cooperates with said locking bolt plate, and said plug being adapted to be turned by the longer key which forces said catch away from said plug so that said cam engages said bufi'er plate and may turn it so as to render said locking plate immovable by said cam.

8. In a lock, the combination of a casing having an aperture therethrough, a locking bolt slidable therein, a plate integral with said bolt having openings therethrough, pins in said casing extending through said plate openings, a lug on said locking bolt plate, a rotary bafiie plate having a slot therein which receives said lug when the locking bolt is retracted, a guard plate pivoted on said casing, said batlle plate having peripheral flutes between any adjacent two of which it is normally engaged by said guard plate and held against rotation, means tending to hold said guard plate in engagement with said baflle plate, a cylinder mounted in said casing, a, plug rotatable by a longer and a shorter key in said cylinder, a cam rotatable with but axially movable relative to said plug, means for holding said locking bolt plate against accidental movement, said cam when turned by the shorter key being adapted to release the locking bolt holding means and move said late, and said catch when turned by the onger key being moved by the latter away from the plug and being adapted to move the guard plate out of engagement with the bafile plate and turn the latter so that its slot cgnnot receive the lug on the locking bolt p ate.

9. In a lock, the combination of a casing having an aperture therethrough and pins supported thereby, a locking bolt slidable in said aperture, a plate on said locking bolt having openings therethrough through which said pins extend so that said plate is slidable on said pins, a rotary bafile plate rotatable on one of said pins and having a plurality of peripheral flutes therein, a guard plate pivotal on said casing, a spring tending to hold said guard plate in engagement with aboth of said tumblers being in alignment with one another, means connecting said tumblers so that they turn together, said locking bolt plate having a marginal recess therein, the

tumbler on the cover having two, marginal recesses therein to e age one of the ins, one recess engagin t e pin when the oc ing bolt is extended and the other recess engagin the pin when the locking bolt is retracts a cylinder mounted in said casing, a plug rotatable by a key in said cylinder, a cam adjacent the inner end of the plug and rotatable therewith but movable axially relative thereto, said cam being ada ted to engage said locking bolt plate and t e tumbler pivoted thereon so as to turn said tumbler and thereby release the other tumbler from said pin and then move said locking bolt, or to engage said guard plate and said baflle plate and first release the latter from the former and then to turn the latter, and means on said locking bolt plate to prevent retraction of the locking bolt when the baflle plate has been turned, said means preventing rotation of said baflle plate when said locking bolt is retracted. I

10. In a lock, the combination of a cylinder, a'plug rotatable by a longer or a shorter key therein, said cylinder having a longitudinal opening therein, a split washer on said cylinder inner end, a peripheral groove in said plug engaged by said split washer, a distance piece normally on said washer, a cam on said distance piece, a projection on said a cam extending into said distance piece so that the cam is rotatable thereon, said cam being rotatable with said plug, a pin secured to said distance piece extending through said split washer and terminating in a head located in said cylinder opening, a spring around said pin extending from said washer to said head tending to hold said distance piece on said washer, said distance iece and said cam being adapted to be move axially from said washer when the longer key is inserted in the plug, a casin in which said cylinder is mounted a loc 'ng bolt slidable therein, and a baflle pilate adapted to prevent movement of said loo move said locking bolt when turned in one plane by one key and being adapted to move the bafile plate by which said locking bolt may be rendered immovable when turned in another plane by the other key.

AVAGIM WARTIAN.

ing bolt, said cam being adapted to

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