US2062066A - Delayed control time lock - Google Patents

Description

Nov. 24,1936. w. c. MILLER 2,062,066 1 DELAYED CONTROL TIME LOCK Filed July 22, 1933 2 Sheets-Sheet 1.

Nov. 24, 1936. w. c. MILLER DELAYED CONTROL TIME LOCK Filed July 22, 1933 2 Sheets-Sheet 2 Patented Nov. 24, 1936 UNITED STATES ENT OFFICE William C. Miller, Canton,

Ohio, assignor to Diebold Safe & Lock Company, Canton, Ohio, a corporation of Ohio Application July 22, 1933, Serial No. 681,774

18 Claims.

This invention relates to a delayed control time lock and more particularly to a lock of such type operated by an electric current.

An object of the invention is to provide simple mechanism by which a look, after a combination has been set for unlocking, can be restrained against operation for a predetermined period of time, electric timing mechanism being employed and being actuated from an exterior side of the 4 safe door. Other specific objects and advantages will appear as the specification proceeds.

The invention is illustrated, in a preferred embodiment, by the accompanying drawings, in Which- Fig. 1 is a broken front View of a safe door equipped with means for starting the timing or delayed control mechanism embodying my invention; Fig. 2, a. broken transverse sectional view; Fig. 3, a broken enlarged view in elevation and part-sectional view of the switch mechanism em-.

ployed; Fig. 4, a rear View in elevation, the view being taken as indicated at line 44 of Fig. 2; Fig. 5, a front view in elevation, the view being taken as indicated at line 55 of Fig. 2; Fig. 6, a view similar to Fig. 4 but showing the stop mechanism of Fig. 5; and Fig.7, a diagrammatic View of the wiring layout.

In the illustration given, A designates a safe door; B, an ordinary tumbler lock mechanism; and O, my improved delayed control mechanism.

The safe door A may be of any suitable construction and may be secured in any desired manner to a safe or chest. given in Fig. l, the door is provided with a slidably mounted button or plunger I!) which is designed to close a circuit to start the operation of the delayed control mechanism C.

The tumbler lock mechanism B may be of any suitable construction. In the illustration given, I have shown a combination lock of a type well known in the trade. The dial member H is equipped with a spindle l2 and secured to an operating disk l3. Journaled upon the spindle I2 are a number of tumblers l4 provided with a series of notches (not shown) which are to be aligned to receive the cross-bar 15. The cross-bar I5 is secured to the draw-bar or link arm l6 which is pivotally connected to the bolt IT. The arm [6 is provided with the usual depending tooth 18 adapted to engage the recess H! of disk l3 when the bar 15 falls into the aligned notches of the tumblers. As shown more clearly in Fig. 6, the link arm I6 is provided near its lower side with a projecting and substantially V-shaped web portion 20, thus providing a shoulder which cooper- In the illustration ates with control mechanism which will be later described. In view of the Well known construction of the tumbler lock mechanism B, a detailed description is not believed to be necessary.

My improved time control mechanism comprises broadly stop or dog means for preventing the retraction of the main locking bolt, electrically operated time mechanism adapted to move the dog or stop to an inoperative position after a predetermined time, and automatic means for breaking the circuit to stop the time control mechanism after the stop means has been moved to inoperative position. The time control mechanism and part ofthe tumbler lock mechanism are housed within casing B, as shown more clearly in Fig. 2.

In the specific illustration given, the stop or dog consists of a pin 2| adapted to engage the front portion of shoulder 20 on the bolt-retracting arm IS. The pin 2| is secured to one end of a lever 22 carried by pivot 23. The opposite end of lever 22 is provided with an arm portion 24 adapted to be actuated by rotatable cam disk 25. The cam disk 25 is provided with a cam extension 25 adapted to engage the surface 24 and to depress the opposite end of the lever 22 carrying pin 2!. The depressing of pin 2| releases it from engagement with shoulder 20 of the bolt-retracting arm and enables the bolt to be drawn to unlocked position. The cam disk 25 is mounted upon shaft 26 which in turn is rotated through a series of reduction gears 2i (not fully shown), and within gear casing 28. The reduction gears 21 are driven by gear 29 which is mounted upon the armature shaft 30 extending into motor 3|, as shown more clearly in Fig. 5. I prefer to employ a spring 32, as shown in Fig. 5, which draws the end of the lever 22 carrying pin 2! to raised position and holds the cam surface 24 in contact with the cam disk 25.

I also prefer to use a pivoted latch member 33, as shown more clearly in Figs. 4 and 6. The latch member is pivotally secured to a bracket member 34 and is provided at its base with a rounded rear corner 35 which permits the latch to swing rearwardly but not forwardly. A spring 35 is employed to draw the latch forward to a vertical position. The latch is provided near its top with a forwardly projecting cam tooth 31 adapted to engage pin 2! when the pin is swung to lowered position.

The means for breaking the circuit and stopping the motor 3! after the stop mechanism has been swung to inoperative position may be of any suitable construction. In the illustration given, I provide a cam disk 38 having a recess 39 on one side. The cam disk 38 is mounted upon shaft 26 which is driven by the reduction gears 21, and which also carries the cam disk 25. A switch comprising two spring contact arms 40 and 4| is located adjacent the cam disk 38. One of the contact arms is provided with a pin 42 which engages the periphery of disk 38. As long as the pin travels on the periphery of the disk 38, the contact arm 40 is urged toward the contact arm so as to bring the contact points 40 and 4| together. When, however, the pin 42 drops into recess 39, because of the natural tension thereon, the spring arm 48 moves away from arm 4| and separates contact points 40 and M In the operation of the lock, the combination is first set for unlocking as many ordinary combination lock, the notches of the tumblers being aligned so as to permit bar IE to drop therein and so as to permit the depending lug |8 of the bolt lever arm to drop into the recess I9 of the disk i3. The main locking bolt I1 is then in a position to be retracted except for the engagement of the dogging pin 2| with the shoulder 20 of the bolt-retracting arm Hi. In order to remove the pin 2| to a position where it will not engage shoulder 20, the button ID on the exterior of the safe door is pressed. As may be seen more clearly from the wiring diagram of Fig. 7, depressing of button I!) closes the circuit in which the motor 3| is placed so that the motor immediately starts into operation. The motor drives through a chain of reduction gears the shaft 26 which causes the cam disk 38 to rotate. A slight rotation of cam disk 38 causes the pin 32 to move out of the depression 39 and brings the contact arms 40 and 4| together. The operation of the motor is from this point on automatic, and the button I may be released. After a predetermined time, the motor, through the reduction gears, rotates cam disk 25 until the cam 725i engages the surface 24 of lever 22 and moves the lever 22 until pin 2| occupies the position, shown in dotted lines in Fig. 4, below tooth 31 of latch 33. The bolt I! may then be retracted to unlocked position.

After the pin 2| has been moved to inoperative position so as to free the arm I6, the motor continues to run until the depression 39 of cam disk 38 is' aligned with the pin 42 of the contact arm 48. As the pin 42 enters the recess 39, the contact arms 40 and 4| are separated and the circuit leading to the motor broken. The timing mechanism then remains idle until button i0 is again pressed to close the motor circuit.

The retraction of bolt-arm I6 causes shoulder 20 to engage the latch 33 and frees pin 2|, as shown more clearly in Fig. 6. The pin is held in lowered position by engagement with the bottom wall of arm Hi. When however, the bolt I1 is moved again to locking position, the pin 22 is free from engagement with the bottom wall of arm I6 and is carried by spring-urged arm 22 to its original position shown in Figs. 4 and 5.

While in the foregoing description, I have described a specific mechanism for preventing the retraction of the bolt until the predetermined time is elapsed, it will be obvious that other mechanism may be employed to serve the same purpose without departing from the spirit of my invention. If desired, other mechanism may be employed in conjunction with my apparatus for varying the time through which the delayed control mechanism operates, etc.

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible, in view of the prior art.

I claim:

1. A look comprising a door-locking bolt, main locking means serving to prevent retraction of said bolt, auxiliary means for preventing withdrawal of the bolt, electrically driven mechanism within the space controlled by said lock-equipped door arranged to operate upon being energized and after operation for a time to retract said auxiliary means, means held inoperative when said bolt is retracted for automatically moving said auxiliary means to bolt-dogging position when said bolt is moved to locking position, and means operated from the exterior of said lock for energizing said electrically driven mechanism.

2. A lock comprising a door-locking bolt, main locking means serving to prevent retraction of said bolt, auxiliary means for preventing withdrawal of the bolt, electrically driven timing mechanism arranged to operate upon being energized and after operationfor a predetermined period to move said auxiliary means to non-obstructing position, latch means for maintaining said auxiliary means in such position during the retraction of said bolt, and means without said lock for energizing said timing mechanism.

3. A look comprising a door-locking bolt, main locking means serving to prevent retraction of said bolt, auxiliary stop means for preventing withdrawal of the bolt, means for rendering said stop means inoperative, means for maintaining said stop means in inoperative position during the retraction of said bolt but restoring said stop means to operative position when said bolt is thrown to locking position, electrically driven mechanism arranged to operate upon being energized and after operation for a predetermined period to actuate said last-mentioned means, and means operated from the exterior of said lock for energizing said mechanism.

4. A look comprising a door-locking bolt, main locking means serving to prevent retraction of said bolt, auxiliary stop means for preventing withdrawal of the bolt, means for rendering said stop means inoperative, latch means for holding said stop means inoperative, means actuated by the throwing of said bolt to locking position for releasing said latch means, electrically driven mechanism arranged tooperate upon being energized and to actuate slowly said means for rendering the stop means inoperative in order to effect withdrawal of the bolt after a predetermined time, and means operated from the exterior of said lock for energizingsaid electrically driven mechanism.

5. A look comprising a door-locking bolt, main locking means serving toprevent retraction of said bolt, auxiliary means for preventing withdrawal of the bolt, electrically driven timing mechanism arranged to operate upon being energized and after operation for a time to release said auxiliary means, means for maintaining said auxiliary means inoperative until after said bolt has been retracted and again thrown to locking position, means operated from the exterior of said lock for energizing said timing mechanism, and automatic means for breaking the circuit in which said electrically driven mechanism is placed after said auxiliary means has been released.

6. A look comprising a door-locking bolt, main locking means serving to prevent retraction of said bolt, a tiltably supported obstructing bar positioned to prevent the retraction of said bolt, electrically driven timing mechanism within the space controlled by said lock-equipped door arranged to operate upon being energized and after operation for a predetermined period to tilt the obstructing portion of said bar out of the way of said bolt whereby said bolt may be retracted, means held inoperative when said bolt is retracted for automatically moving said auxiliary means to bolt-obstructing position when said bolt is moved to locking position, and means operated from the exterior of said lock for energizing said electrically driven mechanism.

'7. A look comprising a door-locking bolt, main locking means serving to prevent retraction of said bolt, a pivotally supported bar having one end normally supported so as to prevent retraction of said bolt, electrically driven timing mechanism arranged to operate upon being energized and after operation for a time to bring the obstructing end of said bar to non-obstructing position, means for holding said bar in non-obstructing position until said bolt has been retracted, and means operated from the exterior of said lock for energizing said electrically driven mechanism.

8. A look comprising a door-locking bolt, a combination lock controlling the retraction of said bolt, said combination lock comprising tumblers equipped with alignable slots and a bolt-retracting link equipped with means adapted toenter said slots whereby said bolt may be retracted, a pivoted bar having one end adapted to engage said bolt-retracting link and to prevent retraction of said bolt, electrically driven timing mechanism arranged to operate upon being energized and after operation for a predetermined period to move said bar to non-obstructing position, latch means for holding said bar in non-obstructing position during the retraction of said bolt, and means carried by said link for engaging said latch and releasing said bar so that it may return to obstructing position when the bolt is again in looking position.

9. A lock comprising a door-locking bolt, main locking means controlling the operation of said bolt, auxiliary means for preventing the withdrawal of said bolt, electrically driven timing mechanism arranged to operate upon being energized and after operation for a time to release said auxiliary means, means for maintaining said auxiliary means inoperative until after said bolt has been retracted and again thrown to locking position, and means operated from the exterior of said lock for energizing said timing mechanism.

10. In combination in a lock device, a doorlocking bolt, main locking means controlling the operation of said bolt, auxiliary means preventing withdrawal of the bolt, electrically driven mechanism arranged to operate upon being energized and after operation for a time to release said auxiliary means, spring means adapted to be tensioned by the release of said auxiliary means for automatically restoring the auxiliary means to bolt-obstructing position upon the moving of said bolt to locking position, and means operated Irom the exterior of said lock for energizing said electrically driven mechanism.

11. In combination in a lock device, a bolt for locking said door, main locking means controlling the operation of said bolt, auxiliary means for preventing withdrawal of the bolt, electrically driven mechanism arranged to operate upon being energized and after operation for a time to release said auxiliary means, spring means adapted to be tensioned by the release of said auxiliary means and under the control of said locking bolt for automatically moving said auxiliary means to bolt-obstructing position when said bolt is moved toward locking position, and means operated from the exterior of said lock for energizing said electrically driven mechanism.

12. In a lock-control device, the combination of a slide movable to locked and open positions, check means normally dogging said slide to locked position, means to move the check means out of dogging relation to the slide, an electric motor for actuating said last-mentioned means, latch means to hold the check means out of dogging relation, said latch means being releasable by said slide upon movement to open position, a control switch for the motor, and means for closing said switch after the motor has been set in operation and opening said switch at the end of the movement of said check-means to non-dogging position.

13. In a lock-control device, the combination of a slide movable to locked and open positions, check means normally dogging said slide to locked position, means to move the check means out of dogging relation to the slide, an electric motor for actuating said last-mentioned means, latch means to hold the check means out of dogging relation, said latch means being releasable by said slide upon movement to open position, a control switch for the motor, and means actuated through the medium of the motor serving to open said switch at the end of the movement of said checkmeans to non-dogging position.

14. In a lock-control device, the combination of a slide movable to locked and open positions, check means normally dogging said slide to locked position, means to move the check means out of dogging relation to the slide, an electric motor for actuating said last-mentioned means, latch means to hold the check means out of dogging relation, said latch means being releasable by said slide upon movement to open position, an automatic control switch for the motor, and an independent manual switch having connections with the electric circuit bridging the first-mentioned switch and serving to initiate the movement of the motor while the first-mentioned switch is in open position.

15. A lock device for a safe door: comprisingmechanism adapted to be carried by the inner side of said door comprising a door-locking bolt, main locking means controlling the operation of said bolt, a bolt-dogging device normally obstructing withdrawal of said bolt, an electric motor equipped with means for withdrawing said bolt-dogging device to non-obstructing position after the lapse of a predetermined interval, associated means for holding said device in nonobstructing position when the bolt is retracted and eiiecting return to obstructing position when the bolt is moved to locking position, and circuit controlling means for the motor circuit operative to maintain the circuit during the withdrawal of said bolt-dogging device and to then interrupt said circuit; and manually-controlled circuitcontrolling means controlling the starting of said motor.

16. In combination: a combination-lock; a casing adapted to be carried by the inner surface of a door to which said lock is to be applied, the front portion of the casing serving to house the tumbler mechanism and associated parts of the combination lock, including a door-locking bolt, and an actuating link therefor; and electric means housed in the rear portion of said casing serving to control Withdrawal of said bolt, said electric means comprising a bolt-dogging member normally dogging the bolt in locked position, an electric motor, a circuit controlling device, and. a gear-reduction train serving to actuate said boltdogging device and said circuit-controlling device.

1'7. In means of the character set forth: a front casing section adapted to be carried by the inner wall of a safe door; a combination lock having a spindle adapted to extend through the safe door and having a bolt, tumbler mechanism, and a bolt-actuating link housed in said casing-section;

dogging member in dogging position when the 10 bolt is in looking position.

WILLIAM C. MILLER.

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