US1393149A - Lock - Google Patents

Description

F. v1. MATCHETTE.

LOCK. I

APPLICATION FILED SEPT|10|V1917| Patented 0c 1'1, 1921. -SHEET l.

ETS

F. I. MATCHETTE.

f LocK.

` APPLICATION FILED SEPT- IO, I9I7- 1,393,149. Patented Oct. 11, 1921.

2 SHEETS-SHEET 2.

UNITED STATFS 'FATET UFFICE;

FRANK J'. IVIATCI-ETTE, OF MILVTAUKEE, -WISHONSIN, ASSIG-NOR TO THE SERVIDR COMlANY, OF WVILMINGTON, DELAWARE, A CQRPOR-ATIGN 0F DELA'WARE.

LOCK.

Lasarte.

Application filed September 10, 1917.

To all whom t may concern:

Be it known that I, FRANK J. MATci-mrrn, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of lWisconsin, have invented a certain new and useful improvement in Locks, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to locks.

The particular aim of the invention is to provide a simple form of lock which is particularly applicable for use in connection with the interlocking mechanism of the type disclosed in Patent Nos. 1222966 and 122296e granted to me April 17th, 1917. Another aim of the invention is to provide a lock which is reversiblethat is, it can be used equally well on the left or right :side without any change.

A further aim of the invention is to provide in combination with a lock an indicating device suitable for use in service doors of the type disclosed in Patent No. 1222963 granted to me on April 17th, 1917.

Other subsidiary and incidental objects will be apparent from the following specification.

I shall now describe a typical embodiment of my invention to apprise those skilled in the art how to practice the invention.

In the accompanying drawings which form a part of the present specification- Figure 1 is a front elevation of the outside of the lock in place upon the edge of a door;

Fig. 2 is a vertical section taken on the line 2 2 of Fig. 1;

Fig. 3 is a View taken on the line 3-3 of Fig. 2;

Fig. l is a section taken on line 1f- 4L of Fig. 1 showing the shaft and connected parts turned so that the fastening screws may be covered when the door is locked;

5 is a view partly in section similar to the view in Fig. 2 showing the bolt in retracted position;

Fig. 6 is a view similar to Fig. 3 showing the bolt in retracted position; f

Fig. 7 is a perspective view of the cams for operating the Iindicator target; and

Fig. 8 is an inner end view of the operating shaft.

As will be understood from the prior patents above referred to, I employ locks on Specification of Letters Patent.

Patented Oct. 11, 1921.

serial No. 190,440.

each of the doors of the service cabinet and interlock these locks so that only one door at a time can be opened. In my Serial No. 190,412, filed September 8, 1917, I have shown a service cabinet in which the doors form the entire sides 4of the cabinet and in which the lock of the present invention is applied to each door. The escutcheon member l is placed a short distance from the edge of the door 15 but in such position as to coperate with the interlocking mechanism contained within the cabinet adjacent the edge thereof.

The escutcheon 1 comprises an ornamental plate having a window 2, back of which window lies an indicator target 3 adapted to be displayed through the window. The window is preferably glazed by a piece of 'glass celluloid or the like, as indicated at 4c in Fig. 2. The escutcheon member 1 has a conical depression 5 providing a bearing for the operating shaft 7. Upon its outer end the shaft is provided with a disk 8 having a handle or thumb piece 9 of suitable shape to be grasped by the hand of the user. rllhe escutcheon 1 is secured to the door by means of the screws 11. The screws 11 are flat headed and lie in suitable openings in the bottom of the conical depression 5 and are shielded by the disk 8. The disk 8 is provided with suitable apertures 12, through which a screw driver may be inserted for attaching the screws 11. The heads of the screws are larger than the apertures 12 so that it is impossible for the screws to come out through the openings 12. The shaft 7 is held in the bearing 6 by means of a split ring 14E which engages in a circumferential grcove.

The manner of attaching the lock to thev door presents a novel arrangement and is of importance.

The disk 8 and the depression 5 in the plate 1 make it possible to prevent tampering with the lock. This is particularly necessary upon an outside door. lf the plate 8 and attached parts 7 and 9 be set in the position shown in Fig. 4 the holes 12 in the plate 8 will be out of register with the screws 11 when the door is locked as is indicated. Hence so long as the door is locked no access can be had to the screws 11, and the lock cannot be taken off the door by loosening the screws.

The prongs 18 on the'shaft 7 are arranged at the four quarters and it is apparent that the finger piece 9 and disk 8 can be set either vertical or horizontal and the holes 12 either in or out of register when the door is locked as may be desired.

W7 hen the bolt 27 is engaged and held by the interlock member as would be the oase in the kitchen door described in my Patent No. 1,222,964, when the compartment is occupied the lock cannot be released until the compartment is opened by the housewife. At the same time the interlocking member prevents movement of the throwing cam 17, shaft 7, thumb piece 9 and disk 8. rlhere is a little play but not enough to permit the apertures 12 to be brought in front of the screws 11.

1t is apparent that instead of apertures, parts of the disk may be cut away.

The shaft 7 passes through an aperture in the door 15 and engages the bolt throwing cam 17 The inner end of the shaft 7 is slotted Vso as to provide four points or 'studs 18 arranged at points separated 90o from eachother. The bolt throwing` cam 17 is provided with corresponding slots or lsockets 19 adaptedl to receive the studs 18.

1t is apparent that the thumb piece 9 may be arranged either horizontal or vertical, de-

pending upon the manner of engagement of the studs 18 with the slots 19.v

rlhe locking mechanism proper is contained in a shell or case 2O having a ycover plate 215 the open side of the shell and the cover plate lying against the inside surface of the door member 15. The cover plate has a pair of lugs struck out ofthe same as shown at 22, these lugs extending forward in an opening or recess 23 in the body of the door 15 and supporting the indicator target 3 which is pivoted at 24 to said lugs 22. The indicator target 3 is provided with a transverse rod 25 which serves as a crank for moving the target on the pivot 24. The throwing cam 17 is pivoted upon a stud or pin 26 secured to the shell 20. rlhe bolt 27 is guided in slots formed on the edge of the casing 20 and is adapted to project on one side or the other of said casing. The bolt 27 is symmetrical, having similar rectangular ends 28 which are slotted as shown `at 29, these slots being engaged by suitable in# terlocking detents or catches, such for in Vstance as the rod 30 shown in dotted lines i erating arm 33 adapted to enter the socket 3 2 for throwing the entire bolt from one side to the other. A biasing spring 34 is connected between the stationary post 35 and a pin 36 fastened to the throwing cam 17. The biasing spring 34 serves as a snap means for throwing the bolt after it passes center.

The throwing cam 17 comprises a circular portion 37 which engages the corresponding circular shoulder 31 for preventing more than a certain predetermined amount of movement of the bolt 27. This circular portion 37 is provided with shoulders 38 which engage the edges of the slots 29 as shown by reference numeral 39 to limit the rotative movement of the operating arm 33. rlhe diagonal edge or surface .40 which joins the slot 29 with the socket 32 forms abutting surfaces for the end of the operating arm 33 to prevent the bolt being thrown in the opposite direction eX cept when the throwing cam is rotated to release engagement thereof.

The casing 20 is secured to the escutcheon 1 by means of the screws 11 which are threaded into the posts 41, these posts being so disposed that they are in alinement with the slots 29 in the bolt 27 and do not interfere with the movement ofthe parts. At the same time their location is such as to support the casing very firmly.

rlhe operation of the throwing cam and bolt is as follows:

Assume that the parts are in the position shown in Fig. 3, the bolt 27 is locked against movement to the left by engagement of the end of the throwing arm 33 with the shoulder or surface 40. The spring 34 is unable to move the throwing arm 33 further downbecause of engagement of the shoulder 38 with the corresponding shoulder 39 on the inner vend of the slot 29. Movement of the bolt to the left is blocked by engagement of the curved shoulder 31 on the edge of the slot with the circular portion 37 on the throwing cam. As the throwing cam 17 is rotated in a clockwise direction the operating arm 33 moves into the socket 34 unlocking the bolt for movement toward the right. r1`he spring 34 is compressed and when the throwing arm 33 passes over center this spring aids in the movement, throwing the bolt 27 over'to the right with a sharp snap motion. rlhe movement to the left is stopped by engagement of the corresponding shoulderV 31 with the circular portion 37 on the throwing cam 17. Rotational movement of the throwing cam is stopped by engagement of the shoulder 38 with the corresponding shoulder 39 and movement of the bolt to the left is blocked by the Vend of the arm 33 engaging the shoulder 40.

The outer surface of the central portion of the bolt 27 has two inclined cam faces 43 which through the agency of the pivoted tappet arm 44 are adapted to actuate the target'. The tappet arm 44 is pivoted at 45 to the back of the shell 20. The tappet arm is made in right and left forms, so that the entire device may be changed over from right to left or vice versa by providing the proper tappet arm. The lock itself need not be changed at all but can be used either right or left as it stands. This tappet` arm has a nose 46 adapted to engage the inclined cam surface 43. The tappet arm 44 has a lug 47 bent up from the top edge of the same. The lug 47 has an opening 48 adapted to receive the hookedpend 49 of the setting bar 50. This setting bar comprises a flat strip lying in a notch 51 at the top of tlie'casing 20. The edge of the setting bar 50 is notched as shown at 52 to limit the movement of the tappet arm 44. The upper end of the setting bar 50 is provided with a finger piece or handle 53. A. biasing spring 54 is connected to a pin 55 mounted on the tappet arm 44 and has its outer end set in a notch in the side walls of the casing 20. This spring tends to move the tappet arm up or down with a snap motion after the arm is thrown over center. The lug'47 which is struck up from the edge of the tappet arm 44 is provided with an operating arm 56 which is struck up from the edge of the lug 47. The operating arm 56 has a slot 57 which embraces the rod 25 for throwing the indicator disk or target 3.

The operation of the lock and signaling mechanism is as follows:

Assume that the device shown in Fig. 1 is mounted upon the inner door of the service door cabinet as shown in my serial No. 190,412, filed September 8, 1917. The lock on the outer door is of the type herein described but need not be provided with the signaling mechanism. When the guest in the room desires some particular service from the hotel servant he calls the hotel desk on the telephone and gives his order, as for instance, a bottle of ice water. The hotel servant having a key to fit the lock for the outer door, opens the outer door and deposits the required article in the cabinet. He then depresses the finger piece 53 which, through the medium of the setting bar, throws the tappet arm down below the center of the pivot 45 so that its outer end 46 may engage the tapered cam surface 43 of the bolt member 27. This depression of the setting bar 50 moves the parts into the position shown in Figs. 1, 2 and 3. The target 3 is displayed at the window 2, notifying the guest that the desired service has been rendered. The hotel servant then closes and locks the outer door, releasing the inner door, so that the guest may turn the thumb piece 9, throwing the bolt member 27 to the position shown in Figs. 5 and 6 and at the same time restoring the target to the position shown in Fig. 5. The target being thrown out of view automatically by unlocking the door gives invariably a true indication. Even if the occupant of the room should attempt to depress the setting bar he would be unable to do so until the bolt is thrown to the left. This would prevent the door from being closed again until the bolt were thrown to the right. Thus it can be seen that no false indication can be given.

I do not intend to be limited to the precise details of construction shown and described.

I claim:

l. Tn combination, a door member, a bolt mounted on the rear surface of said door member for locking the same, a key or handle plate mounted on the front surface of the door, saidplate having an opening, an indicator back of said opening, manual means operable from the back surface of the door for setting said indicator, and automatic means controlled by the bolt member for effacing the signal of the indicator.

2. In combination, a door or the like, signaling means for indicating at one side of the door a locking bolt on the other side of the door for locking the same, a manual key on the one side for throwing said bolt, means operable from the other side of the door for setting the signal in indicating position and means controlled by movement of the bolt for restoring said signal to nonindicating position.

3. In combination, a movable target, a locking bolt, said locking bolt having cam means, a tappet arm adapted to engage said cam means, means for limiting the motion of said tappet arm and a connection between said tappet arm and said indicator target. Y,

4. in combination, a bolt, said bolt having a cam surface, a tappet arm having a nose adapted to be thrown into the path of the cam means, a snap spring for said tappet arm, a setting bar for said tappet arm, a signal and a connection between the tappet arm and the signal.

5. in combination, a casing, a bolt slide ably mounted in said casing, means for throwing said bolt, a tappet arm pivoted to said casing, a snap spring for said tappet arm, a setting bar for the tappet arm, a cover for the casing, said cover having lugs struck up to form supporting brackets, a signal supported on said bracket and an arm projecting through the opening in the cover, said arm connecting the signal and the tappet arm.

6. The combination with a lock for locking the door or closure of a signal, means actuated by said lock for operating said signal in one direction only and manual means for operating said signal in the other direction.

7. The combination with a lock for locking a door or closure of a signal, manual ing said signal Without disturbing means for setting said signal to indicating position, and means actuated by said look for setting` said signal to non-indicating position. j

8. The combination of a lock, a signal, said lock serving` to lock means independent of said signal, manual means for operatsaid lock, and means actuated by said lock for operating said signal upon adjusting said lock to released position.

9. The combination with a lock of a signal, manual means for operating said signal When the lock is in locked condition, and means actuated by said lock for operating said signal upon adjusting said lock to released position, said last named means preventing the operation of said signal until the lock has Vagain been adjusted to locked condition.

10. A combined lock and signal for use in cabinet doors and'inoluding a lock bolt for lockingthe door, a signal, a member operable from one side of the door for operating said lock bolt, mechanism operated by said look bolt :for operating said signal in one direction only, and manual means operable from the other side of the door for operating said signal in the other direction.

ln Witness whereof I hereunto subscribe my name this 6th day of September, A. D; i

FRANK J. MATCHETTE.

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