US2386868A - Lock - Google Patents

Description

Oct. 16, 1945. A, s KARCzEwsKl 2,3862868 LOCK Filed May 9, 1944 .l n4. T 25 5325 2211 10 "i12 1 .2. 42 wil 25 55 ||||Im KILIM,

INVENTOR BY A aw oRNEY Patented Oct. 16, 1945 LOCK Alexander S. Karczewski, North Chicago, Ill., as-

signor to The Yale & Towne Manufacturing Company, Stamford, Conn., a corporation of Connecticut Application May 9, 1944, Serial No. 534,719

(Cl. 292-169) n zontal section through the lock of my invention 17 claims.

This invention relates to a door lock of that class in which a latchbolt is retracted by an 'outside rollback and an inside rollback, the rollbacks being preferably rotatable by inside and outside knobs. In this type of lock, a push piece is usually7 employed for locking the outside rollback, preferably leaving the inside rollback free for rotation. Means are generally provided for retaining the push piece in its locking position, and the said push piece is moved to unlocking position upon retraction of the latchbolt by endWise push thereagainst, or by rotation of the inside rollback by the inside knob.

The invention of this application relates particularly to means whereby the push piece is controlled in its movement relatively to the lock and the outside rollback. The invention relates further to the means whereby the push piece is moved to unlocking position when the latchbolt is retracted.

While the control mechanism for the push piece forming the contribution in this application is described byme as applied to a lock of the general class I have indicated, those skilled in the art will appreciate that my invention may be applied to other types of locks. It is therefore important that my invention be not considered as limited to application to a lock of the class described. It is also important to consider that I use the term push'piece in its generic sense. and that my invention is not limited to a push piece such as I prefer to use; and to be particularly described here.

A feature of my invention resides inthe utilization of a spring pressing against the push piece of my invention at an angle to the direction of movement of the pushpiece, and with a portion of the spring movable with the push piece into its locking and unlocking positions, whereby the spring helps greatly in controlling the movement of the push piece. A still further feature of my invention resides in the utilization of the spring so pressing against the push piece, for urging the latchbolt into its projected position.

. A rfurther feature of the invention resides in K the means whereby the push piece, while urged into its locking and unlocking positions by the spring pressing thereagainst, is yieldingly maintained in either its locking or unlocking position.

A still further feature of my invention resides in the means whereby the latchbolt, in either one of its two possible positions in the lock casing, moves the push piece from a locking to an unlocking position when said latchbolt is retracted.

Referring now to the drawing, Fig. 1 is a horishowing it applied to a door. Fig. 2 is a view of certain of the vparts of Fig. 1, and illustrating the push piece in its rollback locking position. Fig. 3 is a section taken along lines 3-3 of Fig. 1. Fig. 4 is a section taken along lines 4 4 of Fig. 3. Fig. 5 is an exploded view of the parts of my lock.

Referring now more particularly to the drawing, it will be noted that my lock is housed within a casing III that may be mounted in a door II, to the faces of which are applied an outside rose I2 and an inside rose I3. 'Ihe outside rose supports an outer knob I 4 equipped with al spindle I5 for rotating an outside rollback I6 in the casing I0. Mounted for rotation relatively to the inside rose I3, is a knob IT secured to a spindle I8 for rotating an inside rollback I9 also in the casing I0. Those skilled in the art will appreciate that inside spindle I8 is secured to the outside spindle I 5 against endwise separation in a manner old in the art, the spindles being nevertheless rotatable relatively one to the other.

Mounted for sliding movement Within the casing'I of my lock,.is a latchbolt 2B best illustrated in Fig. 5. Latchbolt 20 is formed with a head 2 I and a centrally bored tail portion 22, terminating in a plate 23. Extending from the plate 23 are wings 2li whose function will be presently indicated.

For retractingthe latchbolt upon rotation of either of the rollbacks I6 and I9 I utilize what is termed a retractor 25, lbest illustrated in Fig. 5. Retractor 25 is urged to the position illustrated in Fig. 3 by a spring 26 that lits at its right end in Fig. 3 about an abutment 21 formed on the end of the casing I0. At its left end the spring 26 ts about a lug 28 that is part of the retractor 25. Struck up lugs 29 are formed on the retractor 25 and cooperate with shoulders 30 of the inside rollback I9 and shoulders 3I of the outside rollback I6. The lugs 29 are of course maintained against the shoulders 30 and 3| under pressure of the spring 26 as wellshown in Fig. 3, and therefore act to centralize the rollbacks I6 and I9 as Will be appreciated by those skilled in the art. Retraction of the retractor 25 by either of the rollbacks I6, I9 brings yoke 33 of the retractor against plate 23 of latchbolt 2U and retracts the latchbolt from its positions of Figs. 1, 2 and 3.

The outside rollback I6 protrudes' beyond the inside rollback I9, as seen in Fig. 3 and is formed with a slot 35 for cooperation with a locking lug 36 of a push piece 31 best illustrated in Fig. 5. Push piece 31 is mounted in openings 38 and 3S of the casing l for sliding movement transversely to the casing. For operating the push piece 31 I utilize a push button 4D that is assembled to the push piece 31 by threading the push button 40 into a suitable bore of the push piece as is well understood by those skilled in the art. The push button 4l) is 'prevented from rotation out of assembled relation to the push piece 31 through its engagement with the inside rose I3. The assembling of the push button to the push piece, as. well as the relation of the push piece to the inside rose I3, is all well known in this art.

When the push piece is in its. position of Fig. 1 relatively to the remaining mechanism, both the inside and outside rollbacks are freely rotatable. When the push piece is depressed to its position of Fig. 2, the locking lug 36 entersV the slot 35 of the outside rollback I6 and locks that rollback against rotation. For retaining the push piece 31 in its position oi;V Fig. 1, or in its locking position of Fig. 2, Lutilizea lug 4l 'formed on the retractor as'illustrated in Fig. 5, and a, triangular lug 4.2 on the pushpiece 31, also shown in Fig. 5- The` manner vin which the lugs 4l and 42 cooperate will be indicated presently. 4

The push piece 31 is formed with a lug 43- over which is placed the right hand end of a'spring 4 4. The other end of the spring 44 is mounted within the bore of the sleeve portion 2 2 of the latchbolt 20. It 'is obvious` that the spring 44 effects the projection of the latchbolt 20. The. spring 44 also acts to maintain the push piece yieldingly either its locking or unlocking position through the utilization of the lugs 4l and. 42 set forth inthe precedingparagraph. Thus,` itA will be noted in Fig. l that. the spring 4.4 depressed Vout of itsaxial alignment, 'and that it therefore'tends to maintain the. push piece inthe position of` Fig. 1f with its` triangular lug', 4 2 belowv the lug 4 l on the retractor. When the pushpiece. is' depressed, the spring is moved therewith toits positionv of Fig. 2, and assists in maintaining the triangular lug 42 above the. lug. 4.I"f,ormed on the retractor. f

It *will of course be appreciated that when the push pi'cel is, movedfrom its. positionh of Fig. 1 to the positionv ffFig. 2, it will actually momentarily move the retractor to the right through thefca'mming action of the triangular lug 42 relatively to. the lug 4l. It willnow be further appreciated that should the retractor be movedto. the right in Fig. 2 through the. rotation of insideknob l1,Y the lug 4l will be withdrawn from below triangular lug. 42 on push piece 31.A Simultaneously, onebf the wings 24 of the latchbolt will abut the triangular lug 42 and move the pushpiece from its 'position of` Fig. 2 to its position ofY Fig. 1. In other words, retraction of the. latchbolt byv the. inside knob effects the movement of the push. piece toits release position.

Should the push piece be in its position ot Fig. 2 with the door open, and should the door-be swung shut, thelatchbolt 2l)4 will be retracted due tothe rearward camming action ofthe usual strike contacting the latchbolt head 2.I.. One of the Awings 24 will then contact the triangular lug 4-2 of the push piece. 31. and will move the push piece to the position of Fig. 1in exactly the. same manner as indicated above. The retractor 25 will ot course yieldingly resist this movement; buty its resistance isv` slight.

It isimportantfto note that the two wings 24 on the latchbolt are formedrto allow' reversing of the iatenboit relativen; to theY lock mechanism. Thus, the latchbolt may be rotated 180 from its assaee position in Figs. 1, 2 and 3 without in any way aiecting the operation of the mechanism. Those skilled in the art will fully appreciate the value of this feature.

I believe that the construction and operation of my invention will now be apparent to those skilled inthe art.

I` now claim:

1. In a lock of the class described, a casing, a

i push piece mounted for sliding linear movement on said casing, a helical spring pressing axially thereof at one end against said push piece transversely to the direction of sliding movement of saidpush piece. and against a part of the lock at its other endf, and means whereby said push piece moves said end of the spring with it as it moves` on said casing.

2. AIn a lock of the class described, a casing, a push piece mounted for movement on said casing, a helical spring positioned with its axis at right angles to said push piece andvbearing at one end thereof against said push piece, and against a part. of. the lock at its other end,l and means. whereby said push piece. moves. said end of the spring. to one or the other side. of the axis of said spring as said push pi'ece. moves. on said casing.

3. In a lock ofV the class described, a casing, a push piece means mountingr said push. piece for linear sliding movement on said, casingfbetween a locking and a releasing. Position, a helical spring pressing axially thereof at one. end, against. said push piece substantially at right. angles to the direction of.` sliding movement of said push piece, and against apart of the lock, at its.. other` end, and means whereby said push4 piece moves the end of the spring with. it as moves on said casing between said positionswhereby said spring presses against said push piece at one or the other. side of the axis of said spring, when said push piece is in one or the other ot said positions.

4. In a lock of the class described, a casing, a push piece. mounted for. sliding movement onsaid casing between a locking, and'. a. releasing position, a spring pressing` axially thereof at one end against said pushl piece. substantially perpendicularly tothe direction of movement ofsaid push piece and against a part of the. lock at its other end, and means, whereby said push piece movesy the end, oithe spring with it as. it. moves on said' casing between said positions whereby said spring presses against said push piece. at one. or the other side of the axis, of said spring when said push. piece is in. one or-the other of said positions.

5. In a lock of the latchbolt slidable longitudinallyof saidcasing, a rollback for retracti'ng sai'd,1'atchbolt, a push piece for lockingsaid rollback movable ony said casing between locking and unlocking positions relatively to saidrollback; a spring positioned longitudinally of said. casing. and; eecting. at its outer end theurging oi thel'atchbolt to aprojected position, the inner end oi said spring-bear ing against the said. push piecevand. moving, with the said push piece as, said push piece, moves relatively. to. said casing. I i

6. In a lock` of. the class described., a casing, a latchbolt. slidable longitudinally of` said casing, a rollback. for. retracting said, latchbolt, a, push piece. for locking saidjrollback slidable trans: vers'ely of said casing between. lockingandunlocking positions relatively. to. saidprollback, a helically wound spring positioned with itsasds longitudinal of said casing and effecting at its classy described.. a casing,` a

aereas-sesr outer end the urging of the latchbolt to a pro,- jected position, the inner end of said spring bearing against said push piece and maintained by said push piece out of its normal axial alignment when said push piece is in either its locking or its unlocking positions.

7. In a lock of the class described, a casing, a push piece mounted for movement on said casing between locking and releasing positions, a spring pressing axially thereof at one end against said push piece and against a part of the lock at its other end, means whereby said push piece moves the end of the spring with it substantially perpendicularly to the axis of said spring as said push piece moves on said casing between said positions, and detent means yieldingly retaining said push piece in each of said positions.

8. In a lock of the class described, a casing, a push piece mounted for sliding movement on said casing between a locking and a releasing position, a spring pressing axially thereof at one end against said push piece substantially perpendicularly to the direction of movement of said push piece and against a part of the lock at its other end, means whereby said push piece moves the end of the spring with it as it moves on said casing between said positions, and detent means yieldingly retaining said push piece in each of said positions.

9. In a lock of the class described, a casing, a latchbolt slidable longitudinally of said casing, a rollback for retracting said latchbolt, a push piece for locking said rollback slidable transversely of said casing between locking and unlocking positions relatively to said rollback, a spring positioned longitudinally of said casing and electing at its outer end the urging of the latchbolt to a projected position, the inner end of said spring bearing against the said push piece and moving with the said push piece transversely of said casing, and detent means yieldingly' retaining said push piece in each of said positions.

10. In a lock of the class described, a casing, a latchbolt slidable longitudinally of said casing, a rollback for retracting said latchbolt, a push piece for locking said rollback slidable transversely of said casing between locking and unlocking positions relatively to said rollback, a helically wound spring positioned with its axis longitudinal of said casing and effecting at its outer end the urging of the latchbolt to a projected position, the inner end of said spring bearing against said push piece and maintained by said push piece out of its normal axial alignment when said push piece is in either of its positions, and det-ent means yieldingly retaining said push piece in each of said positions.

11. In a lock of the class described, a casing, a latchbolt slidable longitudinally in said casing, inside and outside rollbacks for retracting said latchbolt, aretractor through which said rollbacks retract said latchbolt, a spring pressing said retractor into a position corresponding to the pro.. jected position of said latchbolt, a push piece slidable transversely of said casing into locking and unlocking positions, means whereby said push piece when in locking position locks the outside rollback while leaving the inside rollback unlocked, a spring positioned longitudinally of said casing and effecting at its outer end the urging of the latchbolt to a projected position, the inner end of said spring bearing against the said push piece and moving with the said push piece transversely of said casing, and detent means on said retractor for yieldingly retaining said'push piece in each of said positions.

12. In a lock of the class described, a casing, a latchbolt slidable longitudinally in said casing, inside and outside rollbacks for retracting said latchbolt, a retractor through which said rollbacks retract said latchbolt, a spring pressing said retractcr into a position corresponding to the projected position of said latchbolt, a push piece slidable transversely of Vsaid casing into locking and unlocking positions, means whereby said push piece when in locking position locks the outside rollback while leaving the inside rollback unlocked, a spring positioned longitudinally of said casing and effecting at its cuter end the urging of the latchbolt to a projected position, the inner end of said spring bearing against the said push piece and moving with' said push piece transversely of said casing, detent means on said retractor for yieldingly retaining said push piece in each of said positions, and means on said latchbolt for moving said push piece from its locking position to its unlocking position when said latchbolt is retracted.

13. In a lock of the class described, a casing, a latchbolt slidable longitudinally in said casing, inside and outside rollbacks for retracting said latchbolt, a retractor through which said rollbacks retract said latchbolt, a spring pressing said retractor into a position corresponding to the projected position of said latchbolt, a push piece slidable transversely of said casing into locking and unlocking positions, means whereby said push piece when in locking position locks the outside rollback while leaving the inside rollback unlocked, a spring positioned longitudinally of said casing and effecting at its outer end the urging of the latchbolt to a projected position, the inner end of said spring bearing against the said push piece, means whereby said spring moves with the said push piece transversely of said casing, detent means on said retractor for yieldingly retaining said push piece in each of said positions, said latchbolt being adapted for reversal through insertion in said casing in rotated positions apart, and means on said latchbolt in each of said rotated positions adapted to move said push piece from its locking position to its unlocking position when said latchbolt is retracted.

14. In a lock of the class described, a casing, a latchbolt movable in said casing, a rollback for retracting said latchbolt, a push piece for locking said rollback movable on said casing between locking and unlocking positions, said latchbolt being adapted for reversal through insertion in said casing in rotated positions 180 apart, and means on said latchbolt in each of said rotated positions adapted to move said push piece from its locking position to its unlocking position when said latchbolt is retracted.

15. In a lock of the class described, a casing, a latchbolt slidable longitudinally of said casingpa rollback for retracting said latchbolt, a dog for locking said rollback movable in said casing between locking and unlocking positions, said latchbolt being adapted for reversal through insertion in said casing in rotated positions 180 apart, and means on said latchbolt in each of said rotated positions adapted to move said dog from its locking position to its unlocking position when said latchbolt is retracted.

16. In a lock of the class described, a casing, a latchbolt slidable longitudinally in said casing, a rollback for retracting said latchbolt, a push piece slidable transversely of said casing into locking and unlocking positions, meansA whereby said push piece when in locking position looks the rollback, detent means push piece in each of said positions, said latchbolt being adapted for reversal through insertiont in said casing in rotated, positions 180 apart, and: means on said latchbolt in eachoi saidl rotated positions adapted to move said push piece fromV its rollback locking position to: its unlocking position when said latohbolt is retracted.

17. In a lock of the class described, a casing, a latchbolt slidable longitudinally in said` casing, inside and' outside rollbacks for retracting said latchbolt, a retractor through which said rollbacks retract said latchbolt, a spring pressing saidretractor into a position corresponding to the profor yieldingly retaining said iectedlpositionV oi said latohbolt,` a push piece slidable transversely. of said casing intoy locking and. unlocking-spositions, means whereby said push piece when inY locking position locks the outside roll-bask. while. leaving the. inside rollback unlocked, a spring positioned longitudinally in said casing. and bearing at its' outer end against the latchboltand at its inner end directly against said,

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