US1841252A - Automatic time controlled safe lock - Google Patents

Description

Jan. 12, 1932. w g s 1,841,252

AUTOMATIC TIME CONTROLLED SAFE LOCK Filed Sept. 22, 1930 3 Sheets-Sheet 1 I 7 f Z3 [7 /5 a? 2/ X Inventor W2 fi er M0 Allomey Jan. 12, 1932. w. H MORRIS AUTOMATIC TIME CONTROLLED SAFE LOCK Filed. Sept. 22. 1930 3 Sheets-Sheet 2 Inventor Wail ei' 4/0777) A llorney Jan. 12, 1932. w. H. MORRIS 1,841,252

AUTOMATIC TIME CONTROLLED SAFE LOCK Filed Sept. 22, 1930 3 Sheets-Sheet 5 Inventor M/l ei" t/oi'l'iltf A llorney Patented Jan. 12, 1932 WALTER H. MORRIS, 01E IPSWICH, SOUTH DAKOTA.

AUTOMATIC TIME CONTROLLED SAFE LOCK Application filed September 22, 1930. Serial 'No. 483.663.

This invention appertains to new anduseful improvements in safe locks and more particularly to a mechanism whereby a safe door can be secured against movement for a predetermined period.

An important object of the invention is to provide asafe locking mechanism capable of being set to become released within a predetermined period at any future moment.

These and otherobjects and advantages of the invention will readily become apparent to the reader of the following specification and claims.

In the drawings Figure 1 represents a front elevational viewof a safe, showing partly insection, the mechanism of the invention.

Fig. 2 is a side elevational view of the safe, showing the mechanism in vertical sectional view.

Fig. 3 representsa fragmentary sectional view disclosing the foundation for the safe. F ig. 4 represents a diagrammatical view disclosing the electrical connection between the electrical devices involved.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 represents the safe shell with the numeral 6 representing the closure or 130. door of the safe with the locking means designated by numeral 7. I

In carrying out the present invention a base 8 is provided witha pocket carried therein within which the usual wheels or casters 10 of the safe are disposed. Thus the casters 10 to prevent detachment of the safe from the foundation.

A raised portion 13 extends across the bot- .4-)' tom of the pocket 9 and a bore 14 is provided through this raised portion and also through the sides of the foundation 8. An elongated shaft 15 journalled through the bore 14 and is provided with an upwardly disposed arm' 1 16 terminating at its upper end in a laterally the door 6. WVhen thisarm 16' is in an elevated position such as shown in Figs. 1 and 2, it will be impossible for the door 6 to be swung to an openposition. s

A recess 18 is provided in the foundation 8 at a point apart from the pocket 9 and in this recess 18 functions the-collar 19 which has an offset point 20 providing a pair of shoulders 21 and 22. A dog 23 is provided with a guide way 24thereon for slidably receiving the pin 25 at the lower free end of the bell crank 26, the upper end of the bell crank 26 being attached at one end of thecoiledspring 27 extending from the support 28. At the lower free end of the bell crank 26 is the armature for the electro-magnet 29 which is electrically connectedinthe manner shown in Fig.4.

Asshown in Fig. 4, the numeral 30 represents a motor, the armature shaft 31 of which drives the worm 32 which is constantly in mesh with the gear 33 on the shaft 34. The shaft 34-carries the eccentrics 3 5,36, 37, the eccentrics 3'5, 36 being provided with shoulders 38, while the eccentric 37 is provided with-depressions 39 at a pair of diametrically opposite points.

Switches, generally referred to by numerals 40, 41 and 42 are associated with the eccentrics '35, 36 and 37 respectively, each comprising an elongated leaf spring 43 in engagement with its corresponding eccentrio, and a short leaf spring 44 for contact with the elongated leaf spring when the so elongated leaf spring is released by the corresponding eocentric.

Numeral 45 represents the current supply line to a single pole double throw switch 46, a wirefrom which extends to the elongated leafsoring 43 ofeach of the switches 40 and 41. helcircuit 47 includes the resistance control 48 for the motor 30 and also the aforementoined electro-magnet 29 with the switch 49.

Inoperation, assume that the safe locking mechanism is'to beset for the desired operation. The arm 51 is set on the resistance control 48. at a position for controlling the speed of the motor 30 so that it will drive the shaft 34 one-half revolution in a certain number of minutes before releasement of the mechanism; for e:;ampletwenty minutes. The timer is now permanently set for a predetermined period of time for releasement and this does not require setting again until the period of time is to be changed.

lVith the timer thus set, the safe is locked whenever desired by raising arm 16 to the securing position, whereupon the dog will gravitate into a position against shoulder 22. The arm 16 is now bearing against the bar 5% on the closure 53 of the housing thus preventing unauthorized entry.

At any time after the locking of the safe, the safe can be opened by closing the switch 46 (which can be remotely located). This will result in the passage of current thru switch -l0 and through circuit 47 to the motor 30, causing the motor to start operating to drive shaft 34 so as to revolve the eccentric 37 which results in the engagement of the leaf spring in the depression 39.

Thus as switch I2 is closed causing the electro-circuit to be energized, the current passes through the switch 49 and through the pilot light 56 which will be located adjacent the switch 46, so that the operator can tell when the safe is unlocked.

The motor continues to operate and the leaf spring 43 of switch i2 is allowed to remain in the depression 39, a period of time, and is then raised so as to break the contact of switch 42. At this point, leaf spring of switch gravitates from the shoulder 38 of the eccentric 85, breaking contact of switch 40 and causing the motor to stop, thus lcaving the switch ll in closed position ready for the operation of the next releasing period.

The alarm is located at some remote point such in a police station or exteriorly of the building in which the safe is located so as to give warning in an emergency. To operate this alarm, the single pole single throw switch is closed instead of the switch 46. ll hen switch 416 is operated to the exclusion of switch the alarm will not operate.

It is of course to be understood that a spring motor or some other motor means may be employed in place of the electric motor being operated by electrical clutches or the like, without departing from the spirit and scope of the invention as claimed hereinafter.

lVhile the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having thus described my invention, what I claim as new is 1. In combination with a safe and its door, a shaft supported for rocking movement adjacent the safe and having an arm thereon which in one position of the shaft will occupy a position in front of the door to prevent opening of the door, magnetically released latch means for holding the shaft in this position, a circuit for the magnetic means, and time controlled means for controlling the circuit.

2. In combination with a lock member, magnetically released latch means for holding the lock member in locked position, a circuit for such means, a normally open switch in said circuit, motor driven means for closing the switch, a circuit for the motor, a pair of switches in the motor circuit, and means operated by the motor for closing one switch after a certain amount of time and simultaneously opening the other of said switches and a hand operated switch for controlling both circuits.

3. In combination with a locked member, magnetically released locking means for holding the same in locked position, a circuit for such means, a motor, a circuit for the same, a normally open switch in the magnetic cir-- cuit, a shaft driven by the motor, a cam on the shaft for controlling the magnetic switch, a pair of switches for controlling the motor circuit, cams on the motor shaft for controlling said switches, said last mentioned cams acting to close one switch after the other switch has been opened, and a manually operated switch for connecting either one of the last mentioned switches and the first switch to a source of supply.

In testimony whereof I afiix my signature.

IVALTER I-I. MORRIS.

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