US1604946A - Lock - Google Patents

Description

Oct. 26 .1926.

J. H. SHAW LIOCK 2 Sheets-Sheet 1 Filed July 12,' 1922 gwuwntoz Oct. 26 1926.

J. H. SHAW LOCK Filed July 12, 1922 2 Sheets-Sheet 2 Patented Get. 26; 192$.

UNITED s'r'res PATENT OFFICE.

JOHN H. SHAW, 01 NEW HAVEN, CONNECTICUT, ASSIGNOR T0 SARGENT & COMPANY,

OF NEW' HAVEN, CONNECTICUT.

LOCK.

Application filed July 12, 1922. Serial No. 574,395.

This invention relates to looks and it has special reference to corridor door locks of hotels. The invention also relates particularly to mortise locks of the type in which the latch is retractable from the outside of the room by a cylinder lock mechanism and retractable from the inside of the room by a thumb turn or the like. The principles of the invention, however, are not limited to this type of looks, but are broadly applicable to other types as well.

One of the primary objects of the invention is to furnish a simple, inexpensive and efficient controlling mechanism for the latch bolt of a lock of this character.

Another object of this invention is to provide improved means for dogging the latch bolt against retraction so that the usual dead bolt may be dispensed with and the door locked against intrusion by means of the dogging of the latch bolt.

A still further object of the invention is to provide dogging mechanism for the latch bolt of a lock which may be operated by a proper key from the outside of the lock and may be operated from the inside of thelock by a thumb turn or the like.

A still further object of the invention is to provide a latch dogging mechanism which may be normally retained in an inoperative position and when moved to the position in which it is designed to perform its function will not become operative until the door is closed.

Still another object of the invention is to provide a latch dogging mechanism con trolled by a dog controlling plunger which protrudes from the face of the lock, but which dogging mechanism may be released at will from the control of the plunger. 1 also contemplate the provision of an indicating mechanism to indicate to a maid or other person in the hotel corridor whether or not the door is locked.

To these and other ends the invention consists in the novel features and combinations of parts to be hereinafter described and claimed. I

In the accompanying drawings:

Fig. 1 is a fragmentary front elevational view of a door equipped with a lock embodying my improvements;

Fig. 2 is a face view of the same;

showingv the parts in the position assumed prior to the closing of the door;

Fig. 5 is a view similar to Fig. 3', but from the opposite side of the lock, being taken on line 5.-5; of Fig. 6;

Fig. 6 is a sectional view on line 6-6 of Fig. 7 is a sectional view on line 7-7 of Fig. 5;

Fig. 8 is a sectional view on line 88 of Fig. 5.

In the drawings I have shown my impr-ovements applied to a lock having the usual mortise case 20 with a face plate 21. In the lower part of the lock is mounted a latch bolt 23. The latch bolt mechanism forms no part of the present invention, but it may be stated that said bolt is retractable from the inside by the usual knob spindle acting on a hub 24; to draw back a retracting shoe or yoke 25, and in the particular case illustrated the outside knob, which is connected by its spindle to a hub member 26, is permanently dogged by a portion 26 on said hub member extending between lugs 27 on the case. The knob shoe 25 has a shoulder 25 disposed in front of a crosshead 28 on the rear end of the latch bolt stem 29, which stem is surrounded by the usual spring 30, which reacts against guide lugs 30 upon the case.

In the upper part of the look a cylinder 31 is screwed in at the outer side and this cylinder, through connections to be hereinafter described, is adapted to actuate a latch retracting lever 32 pivoted in the upper part of the case at 33 and having its lower extremity in front of the crosshead 28. In the form of my invention shown in the drawings the usual 'dead bolt has been omitted, but instead there is provided a flat slide member 35 which has talons 36 located adjacent the lock 31 and a cut away portion 37 between these talons and the forward end of the slide in which the fence or stump 38 rigid with nalled in the case in a suitable manner.

the lock case, is received. This fence guides the slide for restricted movement and it is also guided in a suitable manner at its lower side by one of the lugs Below the talons the bolt has a cut out portion 39 to receive a thumb turn hub 40 which is jou[rn the lower part of the cut out or aperture 39, a gate 41 is formed to cooperate with a wing 42 on the thumb turn hub. This gate 41 is provided with beveled or inclined surfaces to cooperate, in an obvious manner, with the wing 42 to move the bolt to protracted and retracted positions, and between the beveled or inclined surfaces is a small notch pro vided to receive the extreme edge of the wing when intermediate these positions.

The bolt is provided with a tumbler 43 pivoted on a post 44 at the forward part of the slide so as to be carried by the latter and is formed with a project-ion 45 extending between the talons 36 into cooperation with the cylinder look, as hereinafter described. This tumbler 43 is provided intermediate its ends, with a lug 46 to cooperate with the fence 38 in looking the slide either in the retracted position or in an advanced position. Below the tumbler 43 and pivoted to the lock 1 case is a second tumbler 47 which coopera es with the thumb turn hub to deadlock the latch bolt. This tumbler is pivoted on a post 48 secured to the casing and has a spring 49 reacting against a lug 50. The main part of the tumbler 47 overlies the body of the slide 35 and at its upper part the tumbler is provided with notches to converge toward the upper edge thereof and meet each other near the upper edge of the tumbler. One of these notches is indicated at 51 and the other at 52 and the spring 49 exerts an upward thrust on the tumbler so as to tend to keep it firmly seated against the thumb turn hub with one or the other of the notches 51 and 52 engaging the wing 42. The tumbler, being provided with these notches, exerts such an upward thrust on the wing 42 as to hold it in cooperation with one or the other of the inclined surfaces of the gate 41, which are so shaped that the slide will be securely locked in either its retracted or advanced position and cannot be moved out of such position except by the actuation of the thumb turn or the lock 31 by means of the proper key.

The action of the lower tumbler is imparted to the upper tumbler by means of a tumbler connector .53 which may take the form of a small plate. In the example shown, this plate has upper and lower pins 54 and 55 projecting rearwardly therefrom, as shown in Figs. 3 and 4, the pin 54 being received in the slot 56 in the upper tumbler and the lower pin 55 entering asmall hole in the lower tumbler. The slot 56 permits the slide 35 to be shifted without disturbing the connection of the upper movable tumbler with the fixed lower tumbler, as will be understood. The upper part of the connecting plate is also preferably notched as shown at 57 to fit around the fence 38. This guides the tumbler connector in its vertical movement as the tumblers are depressed and maintains the upper part of the connector in the proper relation to the slot 56. The cylinder lock 31 is preferably of the kind shown in the H. G. Voight Patent No. 1,243,016,

granted October 16, 1917, and, as shown, it

has the usual case 58 in which a key plug 59 is rotatably mounted. The key plug is preferably controlled by the usual pin tumblers (not shown) Cooperating with the key plug in the manner described in the patent referred to above, are a pair of rollbacks 62 and 63, the former being alone rotated by all of the keys to the lock, except the emergency key, which rotates both of the rollbacks. These rollbacks are spaced apart in parallel planes by means of a washer 64, and it will be apparent that while the operating pr0- jection 45 on the upper tumbler is disposed in the plane of the rollback 63, it is without the plane of the rollback 62, the latter turning idly over this projection and not capable of retracting or advancing the slide 35.

The latch retracting lever 32, previously described, may be actuated from the cylinder lock by means of a lever 65 pivoted on the slide 35 at 67 and carried thereby, its free end extending into cooperation with a part 68 on the upper edge of the lever 32, when the slide is in the retracted position so that by depressing the lever 65, the lever 32 may be actuated to retract the latch. For this purpose the lever 65 provided intermediate its ends and in proximity to the cylinder lock, with a comparatively deep operating projection 68 close to, and having portions in substantial alignment with, both rollbacks 62, 63, so that said lever may be actuated by the rotation of either rollback. It will be observed, however, that when the slide is in its advanced position, as shown in Fig. 4, the lever 65 is not only out of contact with the latch retracting lever 32, but is also without the range of movement of the rollbacks 62, 63, so that with the slide in this position, it is impossible to operate the latch retracting lever by means of the lock 31, the rollback 62 rotating freely and idly if operated by any of the keys except the emergency key. The latter key, howevcr, rotates both rollbacks and, if used at this time, will serve, through the rollback 63, to move the slide rearwardly to the position shown in Fig. 3, in which the part 68 is again in position to be engaged by either rollback and a continued rotation of the look by the emergency key or the rotation of the rollback 62 by any other key will serve to retract the latch.

In order to dog or deadlock the latch in protracted position, I have provided a dog ging member 70' pivoted upon the post 48 and normally urged to deadlocking position, as shown in Fig. 4, by a spring 71 secured in a notch in the member 7 and reacting against the post 50 below the spring 49. Pivoted to the face plate 21 of the lock case at 72 is a dog controlling plunger 73 which is adapted to abut a closed or solid portion of the door strike to be retracted within the case when the door is closed. In the form of my invention shown in the drawings, this dog controlling plunger does not contact di rectly with the dogging member 70, but a connecting or intermediate lever is provided in the form of a swinging member "74' pivoted upon the slide 35 at 75 and normally urged in a clockwise direction as shown in Figs. 3, at and 4 by a spring 76 engaged in a slot in the member 7 1 reacting against a shoulder 77 on the slide 35. The member 74 is provided with a slot 78 within which is received the pin 79 fixed upon the dog 70.

It will be observed that when the slide 85 is advanced from the position shown in. Fig. 3 to the position shown in Fig. 4 theswinging lever 74; will assume the position shown in the latter figure, the slot 78 being so shaped, however, that the dog 70 will still be retained in inoperative position by reason of the contact of the pin 79 with the lower edge of the slot. If, however, the slide 35 is advanced when the door is closed and the dog controlling plunger is retracted within the lock case, as shown in Fig. 4C, the swinging lever 7% will be moved downwardly about its pivot 7 and will permit the spring 71 to swing the dog about its pivot into position to deadlock the latch bolt in protracted position. The same result will be achieved if the slide is advanced before the door is closed so that the parts will assume the position shown in Fig. 4 and the door is thereafter closed and the dog controlling plunger retracted within the lock case to permit the dogging of the latch bolt, as shown in Fig. 4. It will also be understood that under normal conditions, as shown, for instance, in Fig. 3, the dog 70 is retained in inoperative position by means of the spring 76, this spring being stronger than the spring 71, which tends to urge the dog to operative position. It is, of course, possible with the arrangement provided, to advance theslide by means of the thumb turn or emergency key before the door is closed, as the latch will not be dogged or deadlocked until after the door is closed and the dog controlling plunger is so shaped with reference to the head of the latch bolt that the latter will first contact with the strike plate and be retracted into the case to permit the closing of the door and will not be deadlocked until it springs out into the keeper opening.

In order to dog the knob when the latch 'ridor.

'cate that the door is unlocked.

shown in Fig. 4:

bolt is deadlocked, I have shown a lever 81 pivoted upon the post and provided with a lug 82, which may be swung downwardly to abut against a beveled projection 83 on the knob shoe. The other end of the lever 81 is provided with a finger 84, which exten'ds between spaced lugs 85 and 86 upon one side of the slide 35 to move the lever in and out of operative positionwhen the slide is advanced and retracted.

To indicate to a person without the room whether or not the door has been locked from the inside or with the emergency key from the outside, I have provided a push button 87 suitably mounted in an escutcheon plate or the like 88 and normally urged to an outward position by a coil spring 89. The push button is adapted to enter the lock case through openings 90 in the opposite sides of the same, depending upon which face of the lock is disposed toward the cor- If the door is not locked, the slide 85 will, of course, be in retracted position and the shank 91 will, if the button is pressed, enter an opening 92 provided in the slide 35 to receive it and will thus indi- Iii, however, the slide is in its advanced position shown in Fig. 4, and the door locked, the shank of the button will strike a solid portion of the slide and the resistance to the maids finger will indicate to her that the door is locked. If, on the other hand, the opposite face of the lock is disposed toward the corridor, the shank of the push button when depressed will, when the parts are in the position and the door is locked,

strike against a ward 93 secured to the thumb turn hub, but will clear this hub and be depressible into the lock case if the door is unlocked and the parts inthe position shown in Fig. 3.

The operation of my device is as follows:

If, with the parts in the position shown in Fig. 3, the occupant of the room desires to lock the door from the inside by means of the thumb turn, the latter is rotated and will cause the parts, it or when the door is closed, to assume the position shown in Fig.

'4, where the dogging member 70 deadlocks the bolt in protracted position. The movement of the thumb turn moves the slide to its advanced position, shown in Fig. 4., and moves the lever 65 to a position without the range of movement of the rollbacks 62 and 63 so that no pressure may be brought upon the latch retracting lever 32 by means of the cylinder lock from the outside of the door, to retract the latch bolt while the parts are in this position, the rollback 62 rotating idly and contacting with no part of the lock mechanism. At the same time the lug 86 strikes the tail 8 1 of the lever 81 and dogs the knob shoe and knob. If it is desired to enter the door from the outside, the emergency key must be used as this is the only key which operates the rollback 63 to raise the tumbler 43 and retract the slide 35, thus permitting the spring 76 to Withdraw the dogging member 70 from operative position by means of the swinging lever 74:. After the slide has been retratted, a continued rotation of the key barrel past the. norma Withdrawing position will actuate the lever to move the latch retracting lever and retract the latch from the keeper. It Will be understood that when the slide 35 is retracted by the rollback 63, the lever 65 is again brought within the range of move ment of both rollbacks as it is pivotally carried upon the. slide.

It will of course be understood that when the parts are in the position shown in Fig. 3 and the door is closed, the retraction of the dog controlling plunger '73 Within the lock case will have noetl'ect upon the dogging member '70, as the member 7?) acts upon the dog member only through the swinging connecting lever 74, and then acts to re lease the dog from the influence ot the spring 76 and permit its spring ii to age. it to operative dogging position.

I do not claim in this application alock structure wherein a rollback operated by certain of the keys is permitted to rotate idly when the bol" is deadlocked, or other features claimed in my copending applica ion Serial No. 708,9l8, tiled April 192%.

While I have shovrn and described a preferred embodiment or my invention, it will be understood that it is not to be limited to all ot the details shown but is capable 01" many modifications and va iatious which will lie Within the spirit of the invention and Within the scope or the appended claims.

vVhat I claim is:

1. In a look, a latch belt, a strike engaging plunger, dogging means for the bolt including a movable member and means .to move said member to position to be actuated to dogging position by said plunger.

2. In a look, a latch bolt, a dog controlling plunger protruding from the lock for engagement by the door frame, dogging means for the bolt including a movable member and means to move said member to position to be actuated to dogging position by the plunger when the door is closed.

3. In combination, a door "frame having a strike plate, and a door provided with a lock having a latch belt, a dog controlling plunger protruding from the face of the lock, dogging means for the bolt including a movable member, and means to move said member to position to be actuated to dogging position by said plunger when the latter engages the strike plate.

l. In a look, a latch bolt, means movable to position to be actuated by the closing oi the door to dog the bolt in protracted position and strike engaging means to move said movable means to said position.

5. In a lock, a latch bolt, dogging means for the bolt including a movable member, strike engaging means actuated by the closing of the door to move the dogging means to dogging position, and means to move said member into position to be engaged by said actuated means.

6. In a look, a latch bolt, dogging means for the bolt, dog controlling means actuated 5o dogging position by engagement with the strike upon the closing of the door, and means to render said controlling means inoperative.

7. In alook, a latch bolt, strike engaging means, dogging means for the bolt including a pivoted member, said member being bodily movable into and out of position to be actuted by said controlling means and key controlled means for moving said member.

8. In a lock, a latch bolt, a carrier mov ably mounted Within the lock, tumbler mechanism to retain the carrier in predetermined position, and dogging means for the bolt, mcluding a member movably mounted on said carrier.

9. In a look, a latch bolt, a key-controlled carrier movably mounted Within the lock, tumbler mechanism to retain the carrier in predetermined position, and dogging means tor the bolt, including a member movably mounted on said carrier.

10. Ina look, a latch bolt, a carrier movably mounted Within the lock, tumbler mechanism to retain the carrier in predetermined position, and dogging means for the bolt, including a member pivotally mounted on said carrier.

11. In a lock, a latch belt, a key-controlled carrier movably mounted Within the lock, tumblermechanism to retain the carrier in predetermined position, and dogging means for the bolt, including a member pivotally mounted on said carrier.

12. In a look, a latch bolt, dogging means therefor means to hold said dogging means in inoperative position, strike engaging means actuated by the closing of the door to release said holding means and means to thereupon move said dogging means to inoperative position.

13. In a lock, a latch bolt, a dog therefor, a controlling member for the dog movable independently thereof to operative and inoperative positions and a strike engaging plunger adapted to actuate the controlling member.

14;. In a look, a latch bolt, a dog therefor and a strike engaging plunger, and a dog controlling member movable into and ciut of position to be engaged by said plunger.

15. In a look, a latch bolt, a dog therefor, a strike engaging plunger, a dog controlling member normally retaining said dog in inoperative position but movable by engagement with said plunger to releasing position, and means to move said controlling member into and out of position to be en'- gaged by said plunger.

16. In a look, a latch bolt, a dog therefor, a strike engaging plunger, a movable dog controlling member connected to the dog, and means to move said dog controlling member into and out of the path of movement of said plunger.

17. In a lock, a latch bolt, a dog therefor, a strike engaging plunger, a slide adapted to be moved to protracted and retracted positions within the lock and a dog controlling member mounted upon said slide and adapted to be moved thereby into and out of position to be actuated by said plunger.

18. In a look, a latch belt, a dog therefor, a strike engaging plunger, a slide adapted to be moved to protracted and retracted po sitions within the lock and a dog controlling member pivotally carried by said slide and connected to the dog, and adapted to be moved thereby into and out of position to be actuated by said plunger.

19. In a door lock, a latch bolt, a dog for the bolt, a spring normally urging said dog to operative position, a dog controlling member, a spring normally urging said member to retain the dog in inoperative position, said.

last named spring being adapted to overcome the tendency of the first named spring.

20. In a door look, a latch bolt, a dog for the bolt, a spring normally urging said dog to operative position, a dog controlling memher, a spring normally urging said member to retain the dog in operative position, said last named spring being adapted to overcome the tendency of the first named spring, and a strike engaging plunger to actuate said dog controlling member to move it to dog releasing position.

21. In a door lock, a latch bolt, a dog for the bolt,a spring to urge said dog to operative position, a reciprocable slide mounted in the lock, a dog controlling member carried by said slide and having a loose connection with said dog.

22. In a door lock, a latch bolt, a dog for the bolt, a spring to urge said. dog to operative position, a reciprocable slide mounted in the lock, a dog controlling member carried by said slide and having a loose con nection with said dog, and a strike engaging plunger to actuate said controlling memher when the door is closed.

23. In a lock, a latch bolt, a pivoted dogging member for said bolt, a reciprocatii'ig slide to control the operation of the memher, a normally depressible push button mounted upon the door, and means to block said push buttonagainst movement when the bolt is dogged.

2st. In a door look, a latch bolt, a dog for the bolt, a dog controlling slide mounted within the door and movable to one position to permit the operation of the dog, a normally depressible push button mounted upon the door and blocked against movement when the slide is in said position.

25. In a door lock, a latch bolt, a dog for the bolt, a dog controlling plunger, a member connected to the dog and adapted to be engaged by said plunger, a slide carrying said member and adapted to move it into and out of operative position, and means upon the door to indicate the position of the Slide.

26. In a look, a latch bolt, a pivoted dogging member for the bolt, a dog controlling slide reciprocably mounted in the lock and movable by key operated means at one side of the door, and a thumb turn at the other side of the door, and means to indicate the position of the slide.

27. In a look, a latch belt, a pivoted dogging member for the bolt, a dog controlling slide reciprocably mounted in the lock and movable by key operated means at one side of the door and a thumb turn at the other side of the door, a normally depressible push button mounted upon the door and locked against movement when the slide is in clogging position.

28. In a lock, a latch bolt, a dogging memher for the bolt, a reciprocating slide mounted in the look, a dog-controlling plunger, and dog-controlling means mounted on said slide and adapted to be moved thereby into and out of position to be engaged by said plunger.

29. In a look, a case, a latch bolt recipecably mounted therein, dogging means for ie bolt, a slide in the case for controlling iid dogging means, and a strike engaging lunger to prevent the dogging of the latch olt by said dogging means except when the door is closed.

30. In a look, a case, a latch bolt slidably mounted. therein, a slide mounted in the case, means controlled by said slide and adapted to be positioned behind a part of the latch bolt to dog the same, a strike engaging plunger, and means controlled thereby to permit the dogging of the latch bolt by said dogging means only when the door is closed.

31. In a lock, a case, a latch bolt mounted in the case, a slide movably mounted in the case, dogging means for the latch bolt controlled by said slide, means to hold said (leg ging means in inoperative position when the door is open, and a strike engaging member operated by the closing of the door to release said holding means.

In Witness whereof, I have hereunto set my hand this 7th day of July, A. D. 1922.

JOHN H. SHAW.

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