US1137799A - Lock. - Google Patents

Description

J. H. SHAW & A. A. PAGE.

LOCK.

APPLICATION FILED 1uLY20, 1912.

Patented May 4, 1915.

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, A'TTORNEIVQQ' l. H. SHAW & A. A. PAGE.

LOCK.

APPLICATION FILED IULYZO, I912- v Patent-ed May 4,

2 SHEETS-SHEET 2.

A TTORNE 6 Z i nil/Ill?! WITNESSES- TED STATES PATENT men.

JOHN H. smw,

NEC'I'ICUT, ASSIGNORS TO SABGENT & COMPANY,

A CORPORATION OF CONNECTICUT.

To all whom it may concern:

Be it known.that'we,"JoHN H. SHAW and ALBERT A. PAGE, of the city of New Haven and town of East Haven, respectively, county 4 of New Haven, and State of Connecticut,

ticularly to locks have invented new and useful Improvements in Locks, of which the following is a full, clear, and exact description.

This invention relates to locks, and parembodying a latch bolt which can be deadlocked by means of a thumb turn or similar instru'mentality at the the inside of the door.

The primary objects of the invention are to provide improved means for deadlocking the latch bolt by means of a thumb turn, or the like; to furnish a lock having thumb 'turn operated deadlocking means for the latch bolt which can be withdrawn from its deadlocking position by means of a certain key called an emergency key insertible in look to retract the latch bolt; and to provide a lock in which'the deadlocking means for the latch bolt is movable into operative position by said emergency key scribed and pointed out in the claims.

In the accompanying drawings, illustrative of a preferred embodiment of the invention, Figure 1 is an elevation of the lock, with the cap plate removed, showing the latch bolt free to be retracted by either knob or by any of the series of keys; Fig. 2 is a similar view, showing the latch bolt deadlocked by means of the thumb turn, so that the knobs and certain keys are inoperative to retract it; Fig. 3 is a detail view of a portion of 1' ig. 2, illustrating the action of the emergency key in withdrawing the deadlocking slide from the path of the bolt; Figs. 4 and 5 are sections, through the complete lock, taken on line 5--5 of Fig. 2, Fig. 4 she-wing the operation of the change key, and Fig.- 5; showing the operation of the OF NEW HAVEN, AND ALBERT A. PAGE, OF EAST HAVEN,

Specification of Letters Patent.

conor NEW HAVEN, CONNECTICUT,

Locx.

Patented May 41, 1915.

Application filedJuly 20, 1912. Serial No. 710,566.

emergency key; Fig. 6' is a rear face View ofthe cylinder lock; Fig; 7 is a horizontal section through the rear portion of the cylinder lock; Fig. 8 is a detail edge view of the deadlocking slide; and Fig. 9 shows the master and grand master keys.

The lock case 10, shown in the drawings, having the face plate 11, contains'a latch bolt 12, normally protracted by means of a spring 13, and having at the end of its stem 14 a cross-head 15. In the embodiment illustrated, the bolt is retracted by means of a yoke 16, and inner and outer roll- backs 17, 18, respectively. The outer roll-back 18 preferably has associated withit night latch mechanism of the usual type, comprising a dogging slide 19, a releasing slide 20, and a connecting lever 21.

The latch bolt 12 is retracted by means of a key inserted at the outside of the look, through the intermediary of an elbow lever 22, pivoted in the case at 23, and having a depending arm 2% coactingwith the crosshead 15 of the latch bolt. The other arm 25 of the elbow lever'22 is adapted to be depressed by the bit of a cylinder look, as hereinafter described, whereby the arm 24 of said lever is carried rearwardly, thereby retracting the latch bolt.

The parts so far described are of Well known form, and do not constitute in themselves essential features of the present invention. 1

According to this invention, the latch bolt 12 is adapted to be deadlocked in its pro-. tracted position by means of a thumb turn, or the like, at the inside of the door. In the lock shown inthe drawings, a thumb turn hub 26 is mounted for oscillatory movement in the walls of the case, as shown in Figs. 1 and 5, said hub having its ends 26 formed as trunnions, having bearings in the cap plate and bottom, respectively, of the cases. The opening through the hub 26 is preferably of square cross-section to accommodate a thumb turn spindle (not shown) of the usual form. Projecting from the thumb turn hub is an arm 27 adapted to move in a vertical direction a slide 28 suitably guided in the case, and having a projection 29 to extend in the rear of the latch bolt crosshead 15 in order to deadlock the latch bolt.

In the form shown, the arm 27 of the thumb turn hub fits between pins or abutments 30, 31, projecting from the deadlocking slide 28, so that if the arm 27 is moved downward it will abut the pin 31 and thereby move the slide to deadlocking position, whereas if the arm is moved upward it will abut the pin .30, and thereby remove the deadlocking slide from the path of the latch bolt. The slide may be guided in the case between the rear wall 32 of the same and a projection 33, which projection also serves as a stop, coiiperating with .a shoulder 34 on the slide to prevent the downward move-- ment of the slide beyond the position shown in Fig. 2, i. e., below its proper deadlocklng position. After the slide has been moved to its operative or inoperative pos1t1o1 1, 1t is held firmly in such position by the frictional engagement with the cap piece of a small coiled spring 35, socketed 1n the pro]ection 31. a

The key operated means for moving the deadlocking slide comprises a disk 36 mounted for oscillation in one wall of the case, and carrying a dog or rollback 37, having aniarm 38, projecting freely into the space between the pins 39, 40 on the deadlocking slide. The relation of the dog arm 38 to the pins 39, 40, is similar to that of the sleeve 43 rotatable therein, a plug or barrel thumb turn arm 27 to the pins and 31, so that if the arm 38 is depressed, as shown in Fig. 2, it will move downward the deadlocking slide, while if said arm is raised, as

shown in Fig. 3, it will raise the deadlock- I mg slide into inoperative position.

The slide operating dog 37 is. shown as being located in that wall of thecase which is at the inside of thedoor, and it is in substantial alinement with a cylinder lock 41 (Figs. 4 and 5), by means of which the latch bolt retracting lever 22 is operated. This cylinder lock comprises the cylinder 42,- a

44 rotatable in said sleeve, and the usual tumbler pins 45. The particular construction of these parts is not material to the present invention, but in the form shown it is intended that the plug or barrel 44 be operable alone by means of the. ordinary or change key 46, Fig. 4, while the master keyv 47, grand master key 48, and emergency key 49, are adapted to rotate the barrel and the sleeve together,'substantially as indicated in v Fig. 5. A dog applied to the rear end of the plug or barrel '44 has itsbit 51 engaged in a guide-way 52 in the bit 53 of a ring or dog 54 rotatably mounted on the rear end of the sleeve 43. As the barrel 44 is always rotated by each key of the series, (either about its own axis or about the axis of the sleeve 43) and as the dogs 50, 54, are locked together in the manner specified, it will be obvious that'the dog 54 is adapted to be oscillated by all of the various keys. The rotation of the dog 54 in the proper direction will cause its bit 53 to strike the free end of a lever 55, pivoted in the case at 56,

and resting freely on the arm 25 of the latch bolt retracting lever 22. Hence, if the deadlocking slide 28 is in its raised inoperative position, permitting the latch bolt to be retracted, such an operation of the cylinder lock will cause the arm 25 of the latch bolt lever to be depressed, thereby swinging said Leiier on its pivot and retracting the latch In order to enable the door to be opened from the outside in .spite of the deadlocking of the latch bolt from the inside by means of the thumb turn hub 26, the emergency key 49, Fig. 5, must act on the do 37 in such a manner as to retract the sli e from its deadlocking'position. In order to attain this end, the deadlocking dog or rollback 37 is provided with a cut-away portion 36 adapted to be engaged by a suitable part of the cylinder lock which is projected into said cut-away portion or recess only by means of the emergency key. In the embodiment shown, the dog 37 is engageable by a slide 57 movable longitudinally in the rear portion of the cylinder. lock 41, as shown in Figs. 4 and 5. 4 This slide is guided in an extension of the ke hole, as shown in Fig. 7, and it is of suitabie form to prevent it from being projected out of the lock cylinder be ond the position-shown in Fig. 5. The slide 57 isnormally held by means of a coiled spring 58 with its rear end substantially flush with guide flanges 59 projecting rearward from the cylinderlock and between which said slide is confined, as shown in Fig. 7. When a change key 46,

inserted into the lock, the pointed end ofthe same will take into a correspondingly formed cut-away portion or recess 60 in the inner edge of the slide 57, and said slide will therefore remain in its retracted position. The emergency key 49, however, is provided with a squared off extremity 61 which does not fit the recess 60, but, on the other hand,

comes in full contact with a portion of the edge of the slide 57, so that the latter is thereby protracted to a certain extent, as shown in Fig. 5, into a position wherein it extends into the recess 36 of the dog 37.

The operation of the lock is substantially as follows: If the thumb turn hub 26 is raised into the position shown in Fig. 1, the slide 28 will be lifted out of the path of the latch bolt 12, and it will therefore be possible to retract the latch bolt by means of the inner knob and its roll-back 17, and, in case the dogging slide 19 is in inoperative position, by the outer knob and its roll-back 18. The latch bolt is also freely retractable by any of the series of keys, under these conditions, the bit 53 of the cylinder-lock dog or rollback 54 being movable into a position in which it depresses the arm 25 of the latch bolt lever and retracts the latter. Suppos- 01' grand master inlgainowa ated from the inside of the room and shi d to the position shown in Fig. 2, the deadlocking slide 28 will be moved downward against the stop 35, the projection 29 being then located immediately in the rear of the cross-head 15. It will then be impossible to retract the latch bolt by means of either roll-back, or by means of the change, master keys, the yoke 16 and the 22 being effectively deadlocked by the deadlocking of the latch bolt itself. The emergency key, however, will still unlock the doorfrom the outside owing to the fact that the slide 57 of the cylinder lock will be operated by said emergencv key, as hereinbefore described, so that said slide while in engagement with the recess 36f of the dog 37, will be rotated bodily with the rotating parts of the cylinder lock. As sa1d slide is rotated from its normal upright position (Fig. 5) into the inclined posrtlon shown in Fig. 3, it will be so brought into contact with the walls or edges of the recess 36 as to: shift the dog 37 in the direction of the arrow, Fig. 3, thereby raising the slide 28 toward its inoperative position. By the time the bit 53 of the cylinder lock abuts the lever 55 preparatory to the actuation of the latch bolt lever, the deadlocking shde Wlll be substantially removed from the path of the latch bolt, and as the emergency key is further rotated to an extent suflicient to ratract fully the latchbolt, the deadlocking slide will simultaneously be raised to clear entirely the inwardly moving latch bolt.

The timing of the operations of the sllde 57 and bit 53 may of course be varled somelatch bolt lever what as desired, it merely being necessary that as the latch bolt moves inward the deadlocking slide be in a position to permit an unobstructed incursion of the bolt.

' It will be noted that inasmuch as the dog 37 is capable of shifting the deadlocking slide in either direction, said slide may be moved from inoperative into operative position from the outside of the door by the use of the emergency key. In order to effect this result, the emergency key is inserted in the cylinder lock and rotated in a clockwise direction, thereby shifting the slide 28 downward into its deadlocking position, as shown in Fig. 2. When the parts have reached the position just indicated, further movement of the slide, dog, and key will be prevented by the engagement of the stop lug 33 with the stop shoulder 34 of the slide. The cutaway portion 36 of the dog 37 is of such form, however, as to permit the emergency key to be turned back into a positionin which it can be removed from the cylinder lock. If

any of the other. keys of the series is then insertedinto the cylinder lock, it will. be inoperative to retract the latch bolt. The latch bolt may therefore be deadlocked that the thumb turn hub be 0 r against a certain key or keys ly the use of another key at the same side 0 the door as well as by a thumb-turn member or the like on the opposite side of the door.

While the foregoing description is a detailed one, in so ar as it concerns the particular embodiment of our invention selected for illustration, it will be understood that the invention is susceptible of numerous other embodiments within the scope of the appended claims.

We do not claim the cylinder lock mechanism per se, as the same is the invention of Frank I. Kimball, as claimed in his appliigtion Serial No. 805,065, filed December 6,

What we claim is:

1. In a lock, the combination of a case, a

latch bolt therein, a deadlocking slide movable substantially at right angles to the latch bolt, and adapted to deadlock the same, a cylinder lock mechanism carried by the case embodying two rollbacks, a latch-retracting lever pivoted to the case and adapted to be actuated by one of said rollbacks, the second rollback being arranged to move said deadlocking slide into and out of operative position, a key for operating said first rollback to retract the latch bolt, and a second key for actuating both rollbacks to withdraw said deadlocking slide from voperative position, and then immediately retract the bolt on the same movement of the key; substantially as described.

by the caseand having two rollbacks, one of said rollbacks being adapted to operatesaid retracting lever, and the other rollback being adapted to operate said deadlocking slide, said rollbacks being substantially in line with each other and located in the space between said deadlocking slide and the free end of said retracting lever, a key for operating the latchretracting rollback individually, and a second key for coupling said rollbacks together, and for withdrawing the deadlocking slide from operative position and retracting the bolt within less than a full rotation of the key in one direction; substantially as described.

3. In a'lock, the combination of a case, a latch bolt therein, a deadlocking slide for said latch bolt slidable at right angles to the latter, a retracting lever for the latch bolt pivoted in the case, a cylinder lock mechanism carried by the case and having a rollback adapted to actuate said retracting-lever, said rollback normally having an up;-

right position, a second or emergency roll tioned' operatively with respect to said deadlocking slide, and extending at'a-n angle to the first rollback, a key for actuating the first rollback to retract the latch bolt, and a second key for actuating both rollbacksLtogether to move said slide into deadlocklng position, or to withdraw the slide from deadlocking position, and then retract the latch bolt on'further movement'of the key substantially as soon as the slide is moved out of the path of said bolt; substantially as described.

4. In a look, a latch bolt, a deadlocking slide movable at right angles thereto, a retracting lever for said latch bolt, a cylinder lock mechanism having two rollback's, a key for actuating. one of said rollbacks to operate said retracting lever and withdraw the bolt, means for moving said slide into dead locking position, and 'a second key for moving the deadlccking slide out of operative position by means of the second rollback,

and for retracting the latch bolt'by the first rollback, while the slide is being Withdrawn from operative position; substantially as described.

5. In a lock, the combination of a case, a latch bolt therein, a deadlocking slide'movable at right angles to the latch bolt, a thumb turn hub for moving said slide into and out of deadlocking position with respect to the latch bolt, a retracing lever for the bolt pivoted in the case, a cylinder lock mechanism out of line with said thumb turn hub, and having two rollbacks located in the space between said deadlocking slide and the free end of said retracting lever, a key for actuating one of said rollbacks to operate said retracting lever and withdraw the bolt, and another key for operatively actuating the second rollback, in addition to the first, and for withdrawing the deadlocking slide from operative position prior to the retraction of the bolt on the same movement of the key; substantially as described.

6. The combination with lock mechanism, of a pin tumbler lock having a key plug, said key plug provided with a keyway, a rollback for operating said lock mechanism connected with the rear end of the key plug, a second rollback, a plurality of keys insertible into said keyway, and a slide in said keyway movable relative to said first-rollback by only one of said keys, and adapted to actuate said lock mechanism by means of said second rollback; substantially as. de-' scribed.

7. The combination with lock mechanism, of a pin tumbler lock having a key plug, said key plug provided with a keyway, a rollback connected with the rear end of the key plug, and adapted to operate a part of said lock mechanism, a secondrollback, a plurality of keys insertible into said keyway, and a slide movable relative to said 4 members therein,

end of the one part or member of said mortise lock, a

but not by another key,

said keys, and adapted when so moved to operate another part of said lock mechanism by means of said second rollback when said key is'rotated, said slide being operative by another of said keys; substantially as described.

8. The combination with a mortise lock having a case and two separate parts or of a pin tumbler lock having a key plug, said key plug provided with a keyway, a rollback connected with the rear key plug, and adapted to operate second rollback adapted to operate another part or member of said mortise look, a plurality of keys insertible into said keyway,

and a sliding member shiftable longitudinally of the keyway by one of said keys and adapted when so shifted to operate the second-hand part or member of said mortise look by means of said second rollback; substantially as described.

9. The combination with a mortise lock mechanism having two parts or members, of a cylinder lock sertibleinto said keyway, another and different key insertible into said keyway, a rollback carried by said cylinder lock to cooperate with one of said parts or members, and operable by both of said keys, and a slide projecting into the rear of the keyway, and movable rearwardly by engagement with one of said keys into cooperation with ,said other part or member of said mortise lock mechanism, said key-engaging slide being inoperative by said other key; substantially as described. r

10. A cylinder lock having a .key plug, said key plug provided with a keyway, a change key, insertible into said keyway, an emergency key insertible into said keyway, a rollback operatively connected with said key plug and rotatable by both of said keys, and a spring-pressed slide projecting into the rear end of the keyway, and movable rearwardly by said emergency key, said slide being substantially immovable by said change key, in combination with a mortise lock mechanism having a part to cooperate with said rollback, and another part to cooperate with said slide; substantially as described.

11. A cylinder lock having two keys, a rollback operable by both of said keys, and a coupling slide forming a part of said cylinder lock, and slidable by one of said keys but not by the other key, in combination with a lock mechanism having a part to cooperate with said rollback, and another part to cooperate with said coupling slide; substantially as described.

12. cylinder lock having a keyway, two keys insertible into said keyway, and of having a keyway, a key in' bolt, a retracting mechanism therefor, a

deadlocking mechanism therefor, a pin tumbler lock having a key plug, said key plug provided with a keyway, a rollback for operating one of said first-named mechanisms, connected with the rear end of the key plug, a second rollback, a plurality of keys insertible into the keyway, and a member movable relative to said first rollback by only one of said keys, and adapted to actuate the other of said two mechanisms by means of said second rollback; substantially as described.

14. In a .lock, the combination of a latch bolt, a retracting member therefor, a member for dogging said bolt in a definite position, a pin tumbler lock having a key plug, said key plug provided with a keyway, a rollback for operating one of said firstnamed members, connected with the key plug, a second rollback, a plurality of keys insertible into said keyway, and a slide in the, keyway movable relative to said first rollback by only one of said keys, and adapted to actuate the second of said first-named members by means of said second rollback; substantially as described.

15. In a lock, the combination of a latch bolt, a retracting lever therefor, a deadlocking slide for said bolt, a pin tumbler lock having a key plug, said key plug provided with a keyway, a rollback for operating said retracting lever, connected with the rear a end of the key plug, a second rollback, a

plurality of keys insertible into said keyway, and a member movable relative to said first rollback by only one of said keys, and adapted to actuate said deadlocking slide by means of said second rollback; substantially as described.

16. A pin tumbler lock having a key plug, said key plug provided with a keyway, a rollback connected with the rear end of said key plug, and a key-engaging slide in the keyway, in combination with a mortise lock mechanism having a part to cooperate with said rollback, and a part to cooperate with said slide; substantially as described.

17. A pin tumbler lock having a key plug, said key plug provided with a keyway, a rollback connected with the rear end of the key plug, a second rollback, and a springpressed key-engaging slide for actuating the second rollback movable relative to the first rollback, in combination with a mortise lock mechanism having a part to cooperate with one of said rollbacks, and another part to cooperate with the other of said rollbacks;

substantially as described.

18. A pin tumbler lock having a key plug, said key plug provided with a keyway, a rollback connected with the rear end of the key plug, a second rollback, a plurality of keys insertible into said keyway, lock mechanism, and a slide movable relative to said first rollback by only one of said keys, and adapted to actuate said lock mechanism by means of said second rollback; substantially as described.

19. A cylinder lock having a keyway, a rearwardly movable slide in the rear portion of said keyway, for operating a part outside of said cylinder lock, said slide normally retracted with respect to said keyway, a key formed to shift said slide rearwardly as the key is inserted into the keyway, and another key fully insertible into the keyway without shifting said slide, in combination with a lock mechanism having a part in operative association with the key plug, when said slide is retracted, and another part adapted to be operated by said slide when the same is moved rearwardly by said first-named key; substantially as described.

20. A cylinder lock having a rearwardly movable slide mounted in the rear end portion of the keyway, a key insertible into said keyway to shift said slide rearwardly, a second key fully insertible into said keyway without shifting said slide, and a spring to return said slide'to a definite normal position when said first key is withdrawn, in combination with a lock mechanism having a part operatively associated with said cyla change key insertible into said keyway,,

an emergency key insertible into said keyway, a rollback operatively connected with said key plug and rotatable by both of said keys, and a slide projecting into the rear end of the keyway, and movable rearwardly by said emergency key into position to operate a part of said mortise lock mechanism, said member being immovable into operative position by said change key; substantially as described.

22. A cylinder lock having two keys, a rollback operable by both of said keys, and a slide to operate a part outside and at the rear of said cylinder lock, operative by one of said keys but not by the other key, in combination with a mortise lock 'niechanism having a part to cooperate with said rollback, and a second part into 006 eration" with which said slide is movable y said "first-named key; substantially as described.

23. A cylinder lock having a key plug, said key plug provided wlth a keyway, P111 tumblers cooperating with said key plug, a key insertible into said keyway to rotate said key plug, another and different key insertible into said keyway to rotate said key plug, and a slide adapted to project out of the rear end of said cylinder lock, and

having a part extending into said keyway,

andmovable rearwardly by one of said keys but not by the other key, in combination 'operativeassociation with said cy with a lock mechanism having a incoinder lock when said slide is in its vforward position,

and another part adapted to cooperate with 5 said slidewhen the latter ismoved rear 1 wardly; substantially as described.

In witness whereof, we have hereunto set our hands on the 19th day of July, 1912.

JOHN H. SHAW. ALBERT A. PAGE. Witnesses: i

REUBEN B. CHERnY, BERTHA RAY.

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