US1896622A - Lock - Google Patents

Description

J. HINES Feb. 7, 1933.

LOCK

Filed May 1929 2 Sheets-Sheet l INVENTOR.

M M J A TTORNEYS.

Feb; 7, 1933. J. HINES' 1,896,622

LOCK.

Filed May 18, 1929 2 Sheets-Sheet 2 INVEN TOR.

A TTORNEYS.

Patented Feb. 7, 1933 UNITED STATES PATENT OFFICE JOHN HINES, OF ASToRIApNEw YORK, ASSIGNOR TO SEGAL LOCK & HARDWARE CO.

. INC., NEW YORK, N. Y., A CORPORATION OF NEW YORK LOCK Application filed May 18,

1 set forth in the preceding paragraph-4s that of providing a lock in which the possibility of the parts becoming jammed will be entirely eliminated.

A further object is that of constructing a lock which may be operated by either a latch or knob mechanism without any rearrangement or reconstruction of the parts. I

An additional object is that offurnishing an apparatus of this character, the parts of which will be relatively few in number and individually rugged and simple in construction, these parts being readily manufactured and'assembled and when so assembled furnishing a unitary structure operating over long periods of time with freedom from difficulties. g

With these and other objects in mind, reference is had to the attached sheets of drawings illustrating one practical embodiment of the invention and in which:

Fig. 1 is a face view of the lock casing with the cover plate removed to disclose the con tained mechanism; 7

Figs. 2 and 3 are perspective views of the latch and locking structures;

Figs. 4 to 8 inclusiveshow various details of the mechanism; and

Figs. 9 to'12 are face views of a second form of lock mechanism constructed within the province of the present invention;

Referring primarily to the first group of figures, it will be noted that the' numeral indicates a casing provided with afacing plate 16 within which openings are formed for the passage of a bolt 17', latch-head 18 1929. Serial No. 364,249.

and locking tumblers or pins 19. Extending intoan opening formed in the side wall of thecasing'is an operating lever 20 which may form the tail-piece of a cylinder plug or may beotherwise suitably connected to a key mechanism. The bolt is formed with a rearwardv extension 21 having a slot 22 within which a guiding block 23 attached tothe casing rides. Thus, the bolt is guided at this point as well as by its engagement with the '60 edges of the opening formed'inthe plate 16 and this guiding action may be supplemented as for example by having the rearward portion of the extension engage with a rail 24 forming a part of the casing. j The extension 21 carries a pin 25 upon which is mounted a tumbler lever 26 having its rear end terminating in an upstanding portion 27 projecting between a pair of lugs 28 forming a part of the extension. This position of the parts is maintained normally as for example by providing a spring 29 one end of which cooperates with thelever 26 and the opposite end ofthe spring bearin H against a rest forming a part of the bolt extension. The upper edge of this lever lies adjacent the slot 22 and is formed with recesses 30 which are of sufiicient area to accommodate the block 23, it being obvious that when this block extends within either 30 of these recesses, a longitudinal shifting of the bolt will be prevented.

Now referring to the mechanism by means of which the latch-head 18 is operated, it will be observed that the casing confines between its rear face anda rail portion 31 a pair of plates 32 normally maintained in spaced relationship by inwardly extending flange portions 33 which form a partthereof. Each of these plates is provided with openings 34 and 35 and may also have a recess 36 in its lower edge in order to accommodate the bodies of actuating elements hereinafter referred to. The movement of the plates is limitedas for example by utilizing a pin 37 which extends through the openings 35 thereof and this pin additionally serves as a mounting for a lever or levers 38 which bear against extensions 39 forming parts of the plates 32, these levers being positioned flanges 33 of the plates and the extensions 39 of the latter. As a consequence, it will be appreciated that by turning the spindle one of the plates will be shifted upwardly.

The openings 34 of the plates serve to receive the inner ends 44 of thumb latch elements, it being understood that these elements are pivoted so that downward pressure upon their exposed or thumb portions results in upward pressure at their inner ends. As a consequence and in the event that no knob is employed, the plates may be shifted by the conventional thumb latch in- 'stallation.

Movement of one of the plates 32 may be prevented by actuating the locking pins or tumblers 19. These tumblers are interconnected by a rockingly mounted lever 45 and one of them has a rearwardly extending body 46 which mounts a spring pressed pin 47 engageable with one of two recesses 48 forming a part of the lock casing so that the pins are normally retained in one of two extreme positions. A detachable block 49 is associated with the rear end of the body 46 and this block has an extension 50 which according to whether the block is associated with the body in the position shown in Fig. 3 or is reversed, may be extended to lie in the path of travel of the vertical flange portion 33 of one of the plates. As a consequence, and when the body 46 has been shifted inwardly, movement of this plate is prevented and accordingly the latching or knob clement coop crating therewith will be rendered inoperative. In this connection, it will be understood that the spindle 43 is of the conventional split type, i. e. preferably includes two relatively rotatable but connected portions which cooperate One with each of the actuating elements.

The latch-head 18 is in the embodiment illustrated connected to a rod 51 and mounts a spring 52 for cooperation with a stop 53 forming a part of the lock case. The rear end of this rod terminates in a plate having offset portions 54. As shown, the upper offset portion cooperates with one of the levers 38 and the lower offset portion is engaged by the outer end of a T-shaped lever 55 the shank of which is pivotally secured as at 56 to the extension 21. The opposite arm of this lever rides within a slot 57 forming a part of a lever 58, the upper arm of which extends beyond the plane of the bolt extension and when the latter is wholely retracted lies within the pat-h of travel of the lever 20.

Now with regards to the operation of this device, it will be appreciated that if the bolt is projected, a turning of the key mechanism will result in the lever riding between the lugs 28 to engage the end portion 27 of the lever 26 and swing the latter against the action of the spring 29. Prior to this operation occurring, it will be understood that the rearmost recess in the upper edge of this lever is snugly accommodating the lug 23 so that accidental movements of the bolt are not permitted. The movement of the lever 26 will now permit the bolt to be shifted and a rotation of the lever 20 in a counter-clockwise direction will cause the latter to engage the innermost lug 28 to project the bolt to the position indicated in dotted lines. hen the parts are in these positions, a retraction of the bolt may be achieved by simply rotating the leverthrough the medium of the key mechanism-in a clockwise direction which will primarily cause the lever 20 to ride into the space between the lugs and rock the lever 26. This action will permit a withdrawal of the bolt which has heretofore been held against movement even by force due to the cooperation of the block 23 with the outermost recess 30. Thereupon, the parts will be shifted rearwardly to a position beyond that shown in full lines in Fig. 1. Continued rotation of the lever 20 will cause the same to engage the rear face of the lever 58 adjacent its upper end. Pressure at this point willcause the lever to rock around the pin 25 and to act against the lever 55 to swing the latter rearwardly. This action in turn will cause a retraction of the latch-head 18, it being thus obvious that according to the embodiment illustrated, substantially one complete rotation of the key mechanism will cause first a retraction of the bolt 17 and secondly a retraction of the latch.

It is obvious that when the parts are in the position shown in Fig. 1, the extension 50 of the block 49 will clear the path of travel of the vertical flange 33 and consequently no key mechanism is necessary to effect a retraction of the latch which may be accomplished by simply operating the knob spindle or the latch lever. More particularly and as afore described. an actuation of either of these parts will result in an upward shifting of the plates 32 and this upward shifting will cause one of the levers 38 to be rocked which. incident to the engagement between this lever and the offset portion of the element at the end of the rod 51 will cause a retraction of the latch-head. However, when the block has been shifted to a point overlying the path of travel of the plate flange actuation of the key mechanism will be necessary.

It is understood by those skilled in the art that me lock of this character, it is customary to provide a cylinder mechanism which is exposed on the outside of the closure. For the purpose of throwing the bolt 17 from the inside of the closure, it is, moreover, custo- 5 mary to provide a turn button or lever. Actuation of the latter. is often resortedto in a very casual manner which results in the bolt being left in the position shown in full lines in Fig. 1 with the key-actuated lever 20 ly- 10 ing in the position shown in dotted lines.

Under these circumstances, the lever will be rotated by a person using the key and will ride past the outer end of the lever 58 and come to lie between the same and the righthand lug 28. In such position of the parts, the lever 20 is trapped and the key can not be withdrawn. Additionally and if the bolt is in a certain position, it sometimes occurs that the lever 20 will ride against the upper edge of the right-hand lug 28 resultingin a complete jamming of the parts with consequent danger of the mechanism being damaged. In either event, it is necessary to secure the services of a locksm th to remove the key and reset parts of the lock. However, according to the present construction, it will be apparent due to the fact that the lever 58 may be shifted in either direction that the lever 20 may simply by being turned be freed from its trapped position and under continued rotat on will result in a complete projection of the bolt 17. Thereupon, by reversing the movements of the parts, the lever 20 will ride into the space extant between the lugs 28 to primarily depress the lever 26 and thereafter to retract the bolt whereupon the key may be withdrawn with the parts in proper operative relation.

The lock, as shown, is set up for cooperation with a right hand door. If a locksmith in desiring to install this lock finds that a left hand door or closure is presented. he may readily adapt the lock to such a closure by simply removing the cover plate of the casing and thereafter lifting the uppermost of the plates 32. cessible so that it may be retracted to a po nt a which the latch-head 18 clears the facing plate 16 after which by simply turning the rod 51, the latch head will present its beveled face to extend in a direction opposite to that in which it has heretofore extended. i. e. suitable for a left hand door. The block 49 may at this time also be lifted free of the bodv 46 and reversed so that its extension 50 will cooperate with the flange of that plate 32 which is outermost upon the door so that by means of the pins 19, the outer knob or thumb piece may when desired be prevented from actuating the latch-head.

Finally with reference to this form of lock, it will be observed that the actuating element 41 as in Fig. 8 may have a nested fit whereby mutuality of support and bearing surface is 65 provided, it being thus obvious that no diffi- The rod 51 will now be acculties will be experienced at this point even under long periods of continuing use.

Now referring to the form of lock shown in Figs. 9 to 12, a bolt 59 is provided which is formed with a slot 60 both arms of this bolt having bores to receive a transversely movable bolt 61 capable of being extended. across the slot 60 for cooperation with the member of a keeper (not shown). The bolt 59 has a rearwardly extending plate 62 which pivotally mounts as at 63 a lever 64, the latter ridingwithin a slot formed in the rear face of the bolt-head and engaging within a recess 65 formed in the bolt 61 whereby the latter may be shifted to operative and inoperative positions. The extension 62 has lugs 66 defining the upper edges of a slot and a second lever 67 is pivotally carried by the extension 62 and has an upwardly projecting portion 68 normally lying between the lugs 66, the spring 69 being provided for the purpose of normally maintaining the-lever in this position. The lever 64 carries a pin 70 which lies adjacent t-o a bayonet slot 71 form-ed in the' lever 67 anda spring 72 cooperates with the lever 64' in order normally I to maintainthe bolt'61'in projected position;

A block 73' forms a part of the lock casing and rides within a slot 74f0 rmedin the exten sion 62 and this block cooperates with recessed portions 7 5 formed in the upper edge of the lever 67'so as to prevent accidental shifting of the bolt and in fact to preclude the possibility of a rearward forcing of the same.

9 VVith't-he mechanism constructed-in accord- 'ance with the disclosure under consideration,

a turning of the keywill result in a shifting of the tail-piece or lever 20-to a point a'twhich it engages the extension 68 thusdepressing the lever 67 and permitting the bolt and extension thereof to be shifted outwardly. Due

'to fact that the pin 70 lies initially in a position ad acent-the end of the'slot 71,the

upper edge'of the latter'will, when theflever 67 is swung downwardly, cause the innerend of the lever 64 to rock downwardly thus retracting the bolt 61'. As a consequence, the entire bolt assembly may be projected with the bolt 61 under'the keeper-portion with which it is subsequently to cooperate. However, asthe bolt reaches its wholely projected posi ion. thelever 20incident to its upward swinging-will permit the lever 67 to move in a like manner which will cause the inner end of thelever 64 to ride upwardly thus projecting the bolt 61. A retraction of the parts by rotating the keymechanism'in a clockwise direction as viewed in Fig. 9 will primarily cause a movement of the lever 67 to free the block 7 3 from the outmost recess 7 5 thereof. Simultaneously, with this action,

keeper-portion. The entire bolt 70 will now retract under the influence ofthe lever 20 and I the bolt-'61 will be retracted to th'us clear the CII as the latter clears the rearmost lug 66, the extension 68 together with the lever 6? may again move upwardly to reestablish the position of the parts as shown in Fig. 9.

From the foregoing, it will be appreciated that among others, the several objects specifically aforcrcferred to are achieved. It will, moreover, be understood that, Within the spirit of the claims numerous changes in construction and rearrangements of the parts might be resorted to and that the mechanism might be constructed and arranged to achieve certain of the objects of the present invention without necessarily accomplishing all of the same.

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

1. A lock including, in combination, a casing, a latch bolt means for projecting said latch bolt from within said casing, a pair of levers rockingly mounted within said casing, a pair of plates connected to said levers whereby one of the latter will be rocked to retract said latch bolt when one of said plates is shifted, and means optionally disposable within the path of travel of said plates to prevent movement of one of the same.

2. A lock including, in combination, a casing, a latch bolt means for projecting said latch bolt from within said casing, a pair of levers rockingly mounted within said casing, a pair of plates connected to said levers whereby one of the latter will be rocked to retract said latch bolt when one of said plates is shifted, a member having an offset end disposed Within said casing, and means for projecting and retaining said member with the end thereof blocking a shifting of one of said plates.

3. A lock including, in combination, a casing, a latch bolt, means for projecting said latch bolt from within said casing, levers connected to said latch bolt to retract the same, said levers being rockingly mounted within the said casing, a pair of elements one connected to each of said levers to rock the same to effect a retraction of said latch bolt, a member projectable towards said elements, and a block including an offset portion, said block being reversably connected to said member whereby the offset portion thereof may extend in the path of travel of either of said elements to prevent a retraction of said latch by one of said levers.

4;. A look including a casing, a bolt projectable beyond said casing and formed with a slot, a second bolt carried by said first named bolt and projecting across said slot, an extension forming a part of said first named bolt, a pair of levers mounted upon said extension and one connected to said second bolt to shift the same, the other of said levers being connected to said first named lever to operate the same, a block extending from said casing and engaging 'said second lever to normally prevent a shifting of either of said bolts, and means to engage said second lever and extension to permit a shifting of said bolts.

In testimony whereof I aifix my signature.

JOHN HINES.

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