US2307110A - Lock - Google Patents

Description

Jan. 5, 1943.. A. cHEsLER 2,307,110

LOCK Fi-led Deo. 24, 1940 2-SheeiZSSheet l ATTORNEYS Jan. 5, 1943. A. E. cHEsLER l2,307,110

LOCK

Filed DGO. 24, 1940 2 SheetSSht 2 Patented Jan. 5, 1943 UNITED STATES PATENT OFFICE LOCK Abraham E. Chesler, Woodmere, N. Y. Application December 24, 1940, Serial No. 371,478

11 Claims.

The present invention relates to door locks of the keyless type used for bed rooms, bath rooms, and the like.

It is among the objects of the invention to provide a keyless door lock which may be fabricated at relatively low cost, which may be installed with a minimum of time, effort and expense, which will not impart strain to the operating or locked parts when attempted to be opened by turning the outside knob, but which may be conveniently unlocked from the exterior in an emergency by resort to a nail or pick and which can be effectively locked only by a deliberate operation for the purpose, and if locked when the door is ajar necessarily becomes unlocked on closing or slamming the door.

A feature of the invention is the clutch between the outer door knob, and the latch bolt retracting means operated by the inner door knob, which clutch may be latched in released position to isolate the outer knob from the latch, so that the door cannot be opened by turning the outer knob, since only free and unrestrained turning of said knob is possible as long as the clutch remains latched open.

Among other features are a push bar clutch release construction automatically latched in clutch released position by a spring-pressed plate in the body of the lock, and the tripping of said clutch plate .by the movement of the latch bolt, so that the lock is released by pushing the latch bolt inward regardless whether this be done directly by shutting the door, by inserting an emergency nail or the like from the outside, or by the turning of the inner door knob.

Another feature is the simple installation of the lock by introduction of the body thereof into a hole of larger dimensions through the door, which facilitates the introduction of the unitary protruding latch piece thereof through a smaller cylindrical bore radiating from said hole.

In the accompanying drawings in which is shown one of various possible embodiments of the several features of the invention,

Fig. 1 is a perspective viewV showing one side of the door lock installed,

Fig. 2 is a View in longitudinal cross-section on a larger scale taken on line 2--2 of Fig. 1,

Figs. 3, 4 and 5 are views in transverse crosssection taken respectively on the lines 3-3, 4-4

and 5-5 of Fig. 2,

Fig. 6 is a perspective View of the door locking bar,

Fig. 7 is a fragmentary sectional view on a larger scale, taken on the line 'I-'l of Fig. 5,

Fig. 8 is a transverse cross-sectional View taken on line 8-8 of Fig. 2,

Fig. 9 is a perspective View of the latch bolt slide piece,

Fig. 10 is a perspective view of the sleeve on the inner spindle length,

Fig. 11 is a sectional view similar to Fig. 2, but showing only a fragment thereof, and indicating the door in locked position,

Fig. l2 is a transverse sectional View taken on line I2-i2 of Fig. 2,

Fig. 13 is a fragmentary detailed view, taken on the line I3--I3 of Fig. 3, and

Fig. 14 is a sectional view of a modification in a detail.

The lock includes a body or casing I5 made up of trays I6 and I1 in rim to rim Contact. On the cor of tray I6 rests a slide piece I8 in the form of a yoke having unitary therewith a latch bolt I9 with a head I9. rIhe stem 20 of the latch bolt has a peripheral groove 2l straddling ledge 22 in the yoke I3, protruding outward laterally through notch 23 in the wall of tray' I B, and urged to outermost position by a coil spring 24 encircling said stem and reacting against washer 25 in the casing. The cover tray Il has a downturned tongue 25 notched to straddle stem 20.

Superposed over the upstanding rim I1 of tray Il, the bottom of which thus constitutes a partition in the body or casing I5, is a face plate 21- of larger diameter. Screws 28 threaded into correspondingly tapped bores in enlargements 29 in both trays I6 and I1 serve to assemble said trays and face plate together. The face plate 21 serves as a bearing for a sleeve 33 through which eX- tends a spindle length 3| keyed to the sleeve preferably by a cross-pin 32 kept in position by the inner edge of said face plate. Over the rim of face plate 21 is snapped the peripheralr flange' of rosette 55. To the outer or protruding end of said spindle length is affixed as for instance, by means -of a set screw 33, the inner door knob 34. The sleeve has rigidly or integrally aixed thereto a transversely extending wing piece or lug 35 in the rotary path of movement of which are upstanding lugs 36 on the slide piece I8, so that the latch bolt may be retracted by turning the door knob 34.

The tray I6 of the body or casing has a reduced hub 31 at the outside, within which bears a collar member 38, slidably keyed at 39 upon the companion spindle length 48, upon the outer end of which is affixed the outer door knob 4I. The spindle lengths 3l and 40 are alignedandv the adjacent ends of collar 38 and sleeve 30 havecoacting clutch teeth 42 and 43 respectively. A coil spring 44 encircles collar 38 and reacts against the inner end of hub 31 to maintain the clutch normally in closed position, so that in such position sleeve 33 will turn with door knob 4I and thus eilect retraction of the latch bolt I9.

Means is provided for releasing at will the connection between outer door knob 4i and latch bolt I9. Such means desirably comprises a rod or bar 45 extending lengthwise within the body, having an inturned shifting connection 46 at its inner end lodged in a corresponding groove 41 in collar 38 and having a push button 48 threaded upon the exposed end thereof.

Encircling the sleeve 30 and resting upon the oor of tra-y I1 is a flat clutch release latch plate I 49. It is maintained in position against the tray I1 by a lock ring 59 fitted in a corresponding groove 5I in sleeve 39. A leaf spring 52 reacting between its ends against a pin 53 in the tray I1 and at its extremity against a lug 54, urges a tongue 55 of plate 49 resiliently against the lateral edge of the clutch release bar 45. The latter has a notch 59 which enters the plane of the latch plate 49 as the clutch reaches released position, where it is held by the entry of tongue 55 into said notch under the pressure of spring 52 as shown in Figs. 3 and 11. In such position, the door knob 4I at the outside is disconnected from the latch bolt I9 and can only be turned freely and idly without the possibility of opening the door and incidentally without the possibility of exerting strain upon any of the operating parts.

The door is readily opened by turning the inner knob 34. Wing 35 on sleeve 39 by engagement with lug 36 retracts slide piece I8 and with it the latch bolt I9. By this operation, the clutch release latch bar 45 is also tripped, by the arrangement now to be set forth. An upstanding pin 51 on the lug 35 of the slide piece I8 protrudes through an aperture 58 in the tray I1 into contact with the edge of the clutch release plate 49. That plate is provided with an obliquely extending lug 59 across the path of movement of pin 51. It follows that as the slide yoke I8 of the latch bolt moves inwardly, that is, toward the left in Fig. 2, the pin 51 thereon will cam the latch plate 49 in a counterclockwise direction when viewed in Fig. 3, and thereby will move the lug 55 out of notch 56, permitting the coil spring i 44 to snap the collar 38 and with it bar 45 to clutch closing position. Upon turning outer knob 4|, the spring 44 will bring the collar 38 into clutching registry of teeth 42 with teeth 43 on sleeve 30 and further rotation of said knob y Will cause the same to turn sleeve 3i) for retraction of latch bolt I9 by torque transmitted through wing piece 35, in the manner previously set forth.

By reason of the fact that closure of the clutch 42-43 is effected through movement of the latch bolt, the possibility is precluded of a person locking himself out of the room. In the process of closing or slamming the door, the inward movement of the latch bolt I9 causes shifting of the slide piece I8 and effects tripping of the clutch release latch plate 49, should the latter be in latched position.

The lock is applied at a circular hole @Il through the face of the door and of diameter considerably larger than the dimensions of the body or casing I5 of the lock.` A smaller cylindricalbore 6I radiates through the edge of the door from said hole 60. The pre-assembled lock can readily be installed by inserting the latch bolt I 9 rst through hole 60 into the inner end of lateral bore 6I, whereupon the body will be readily accommodated in hole 60, and against the latch side thereof. Face plate 21 at the rim of said hole 63 centers the lock in position. An outer face plate 62 to which the spindle length 40 is aflixed by a split washer 63 is then introduced into the opposite rim of the hole 6U and secured in position by screws 64. Thereupon the rim of rosette 66 is snapped over that of face plate 62 and the knob 4I is tightened in place by set screw 4I. Latch bolt I9 may be turned about the axis, so that its oblique face of its head I9' may be directed either way as required. The face plate 61 in the edge of the door serves as the guide for the movement of the latch bolt and as a trim therefor.

To permit opening of the locked door from the outside in case of an emergency, there is provided a small aperture 68 in the outer rosette 66, registering with an aperture 69 in the outer face plate 62 and with an oblique notch 10 in the base of the slide piece I8, accessible through a corresponding small aperture 1I in the floor of the tray I1. By pushing a nail, pick or similar rigid rod 12 through such apertures, the slide yoke and the attached latch bolt are moved inward, causing the pin 51 thereof to shift the clutch release plate 49 and permitting collar 38 to snap back into clutched position, so that the door may now be readily opened by turning the outer knob 4I. Desirably rosette 66 is keyed as at S6 with re spect to face plate 62, so as to bring aperture 68 in registry with aperture 69.

Desirably, as shown in Fig. 14 the latch rod 20 is displaceable transversely of its length in the direction of the spindle so that it may be readily adapted for centering the latch with respect to the thickness of a thicker door. For this purpose the lyoke-shaped slide piece I3 affords an elongated seat I8 for the latch bolt 20' and the notch 23' in the wall of tray I5 and the coacting notch in the downturned tongue 26' of tray |12 are elongated to permit the desired adjustment in the position of the latch. In the course of installation of the lock in the manner previously described it is clearV that the latch bolt will automatically shift in the elongated slot 23 and the coacting slot of tongue 26 for alignment with the corresponding bore of the thicker door, and will be maintained in that position by the face plate corresponding to that shown at 61 in Fig. 2.

As many changes could be made in the above construction, and many apparently widely different embodiments of this invention could be made without departing from the scope of the claimsy it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A door lock comprising a body, a laterally protruding spring urged latch bolt, a pair of. spindle lengths in aligned relation protruding respectively from the outer and the inner faces of the body, each having a knob aixed thereto, structure within the body encircling the inner spindle length and rigid therewith and having coaction with said latch bolt for retraction thereof upon turning the inner knob, slidable means including a collar keyed to the other spindle length, having clutch connection to said latch bolt retracting structure, a spring normally maintaining said clutch connection effective for release of the latch bolt by turning the outer knob, meansfor disconnecting the latter knob from the latch bolt, said means comprising a clutch release button accessible from the inner face of the lock and' a connection therefrom engaging said collar to slide the latter for disengagement of the clutch and releasable means for maintaining said connection in clutch releasing position and means interlocked with the inner spindle for tripping said releasable means upon turning of the inner door knob.

2. A door lock comprising a body having an inner spindle length and an outer spindle length in axial alignment and'protruding from the opposite faces thereof, knobs on the respective spindle lengths, a latch bolt withdrawing structure encircling and rigidly xed upon the inner spindle, a collar slidably keyed upon the outer spindle, a coil spring about said collar urging the latter against the latch bolt withdrawing structure, said latter elements having coacting teeth for clutch connection, and means for rendering said clutch ineffective, said-.means comprising a clutch release bar connected to said collar, protruding from the inner face of the body and adapted to retract said collar against the resistance of said spring and spring urged releasable means for retaining said bar in open clutch position, thereby to disconnect the outer knob from the latch and permit idle rotation thereof and means connecting the inner knob to said releasable means for tripping the latter upon turning said knob.

3. A door lock comprising a body, a door latch bolt protruding laterally therefrom, a, pair of spindle lengths in aligned relation protruding respectively from the inner and the outer face of the lock and each having a door knob secured thereto, a sleeve encircling said inner spindle length and keyed thereto, a slide member within said body, movable as a unit with said latch bolt, means carried by said sleeve engaging said slide member and retracting the latch bolt upon turning of said inner door knob, a collar slidably keyed to said outer spindle length, the adjacent ends of said collar and said sleeve having coacting clutch teeth, a spring encircling said collar for clutch connection between said collar and said sleeve, a clutch release bar having at its inner end a shifting connection with said collar and having a push button at its outer end and a spring urged holder for the shifting connection adapted to snap into a notch in said bar when in depressed position, said slide member having means for tripping said holder upon turning of said inner door knob.

4. A door lock comprising a body, a latch bolt protruding laterally therefrom, aligned spindle lengths protruding from the inner and outer faces thereof, door knobs affixed thereon, a slide within said body rigid with said latch bolt, a sleeve keyed upon said inner spindle length, coacting lugs upon said sleeve and said slide respectively for retraction of said latch bolt upon turning of said inner knob, a collar keyed upon said outer spindle length, having tooth clutch coaotion with the associated end of said sleeve, a spring about said collar maintaining said clutch effective and clutch release means comprising a bar having a shifting connection with said collar and a push button accessible from the inner end of said body, a clutch latch plate spring urged against said bar and adapted to snap into a notch in the latter when the clutch is fully released thereby, and means carried by said slide for tripping said latch plate as the latch bolt is being retracted.

5. In a door lock, a body, a latch bolt having an associated slide piece within said body, a spindle length protruding from the inner face of the body, a door knob affixed thereon, a lug rigid with said spindle length engaging said slide piece to withdraw said latch bolt on the turning of said inner spindle length, an outer spindle length aligned with said innery spindle length and having a door knob ainxed thereon, a collar on said latter spindle length, a toothed clutch connection between said collar and said first spindle length, means accessible from the side of the inner door knob for releasing said clutch, a retaining means for automatically locking said releasey means in release position and means rigid with said slide piece for tripping said" retaining means upon retraction of saidlatch bolt.

6. In a door lock, a body, a latch bolt having an associated slide piece within said body, a spindle length protruding from the inner face of the body, a door knob affixed thereon, a lug rigid with said spindle length, engaging said slidepiece to withdraw said latch bolt on the turning of said inner spindle length, an outer spindle length aligned with said inner spindle length and having a door knob aiiixed thereon, a collar on said latter spindle length, a toothed clutch connection between said collar and said first spindle length, means accessible from the inner door knob side for releasing said clutch connection, a clutch retaining means for locking said means in clutch release position, means rigid with said slide piece for tripping said clutch retaining means upon retraction of said latch bolt, and emergency means for tripping the clutch retaining means from the outside, said means comprising a small aperture through the outer face of the body for accommodating a nail or the like aligned with an oblique notch in the slide piece for displacing the latter to trip the clutch retaining means.

7. A door lock, including a body adapted to be accommodated in a corresponding hole in the door, a spring urged latch bolt extending laterally therefrom and adapted to be accommodated in and to extend through a bore in the door radially of said hole, face plates, one assembled to said body and closing one side of the hole and the other apart from said body and closing the opposite side of the hole, a sleeve bearing in one of said plates, a collar aligned therewith and bearing in the other of said plates, a spindle length extending through said sleeve and partly through said collar and having a door knob affixed to the exposed end thereof, a second spindle length extending into said collar and keyed thereon and having a door knob affixed on the exposed end thereof, a toothed clutch connection between said sleeve and said collar, and a push bar protruding past the inner plate and having a shifting connection to said collar for displacing the latter to open clutch position, means for latching the said bar in the latter position and means for tripping said bar latching means by turning of the inner door knob.

8. A door lock, comprising la body comprising a casing having a laterally protruding latch bolt with a latch head at the outer end thereof, a coil spring about said bolt reacting against said body and urging the bolt to projected position, said rod being freely rotatable in said casing for rendering the latch head effective from either face of the casing, a slide piece rigid with said latch bolt and lodged in said body, and alternative means for engaging and shifting said slide piece to release the bolt, said means including an inner knob spindle having a wing thereon, said slide piece having a lug in the path of said wing as it moves with the turning door knob, an outer door knob, releasable clutch means connecting the latter to said inner spindle for operating said wing piece, means accessible from the inner side of the lock to shift said clutch to open position, a latch retaining said clutch in released position and a pin carried by said slide piece for tripping said latch by the movement of said slide piece.

9. A door lock comprising a body having a floor, a slide yoke thereon, a latch bolt unitary therewith protruding laterally therefrom, said yoke having an upstanding lug, a spindle length extending into said body and having an inner door knob aiiixed thereon, a sleeve about said spindle length, keyed thereto and having a wing in the path of said lug for retracting the slide yoke together with the latch bolt upon turning the inner door knob, an outer spindle having a 'door knob aiXed thereon, a collar slidably keyed to said latter spindle, a toothed clutch connection between said collar and said sleeve, a coil spring about said collar reacting against said body and maintaining said clutch in closed position to permit retraction of the latch bolt by turning the outer door knob, means for releasingsaid clutch to render the outer door knob idle', said means comprising a bar having a shifting connection to said collar and a push button at its inner end,

a partition in said body. a latch plate resting on said partition body, a springurging said latch plate against said bar, the latter having a notch into which the latch plate is snapped when the clutch is in open position, said slide yoke having an upstanding pin protruding through said partition and effective to trip said latch plate as said slide piece is moved inwardly.

10. A door lock comprising a body composed of a pair of superposed trays, a latch bolt protruding laterally from said trays, aligned spindle lengths extending from opposite faces of said body, a slide piece unitary with said latch bolt and mounted in one of said trays, a sleeve on the spindle length in the other of said trays, said sleeve having a wing piece thereon, said slide piece having a lug in the path of movement of said wing piece, a spring urged collar slidably keyed on the other spindle, a clutch connection between said sleeve and said collar, means for disconnecting said clutch, means encircling said sleeve and mounted on the floor of the other tray for latching the clutch in released position, said slide piece having an upstanding pin extending through a corresponding slot in the tray thereabove and coacting with said clutch latching means for freeing the latter upon displacement of said slide piece.

1l. A door lock comprising a body composed of a latch bolt carrying tray and an associated tray secured thereto in aligned relation, the associated tray having a lug extending into a corresponding slot in the latch bolt carrying tray, said lug and slot having complementary bearing notches, a latch bolt protruding laterally therethrough, a carrying yoke therefor slidably mounted in said latch bolt carrying tray, spindles protruding through the opposite faces of said body, a clutch sleeve encircling one of said spindles and lodged in the associated tray, protruding into the latch bolt carrying tray and having a wing piece laterally thereof in said latter tray, said carrying yoke having a lug in the path of movement of said wing piece, a spring urged collar keyed upon the spindle associated with the latch bolt carrying tray, said collar and said sleeve having coacting clutch teeth, a clutch releasing bar extending through said body and straddling said collar for shifting the latter to released position, a clutch release latch plate in said associated tray about said sleeve, an associated spring urging said plate against said bar, a latching notch in said bar aligned with said plate when said bar is in clutch releasing position, and a pin carried by said carrying yoke;

ABRAHAM E. CHESLER.

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