US1364048A - Lock - Google Patents

Description

H. E..G|LLAND.

-LOCK.

APPLICATION FILED JUNE 7, 1919.

Patented Dec. 28, 1920.

2 SHEETS-SHEET 1- WITNESS:

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H. E. GILLAND.

LOCK.

APPLICATION FILED IUITE 7. 1919.

1 364,048, Patented Dec. 28, 1920.

2 SHEETS-SHEET 2.

IVITNESS: INVEIYTOR. W fly BY fZZZG aZZaJLdI A TTORNE Y.

UNITED STATES ATENT OFFICE.

HOMER E. GILLAND, OF GRAND RAPIDS, MICHIGAN.

LOCK.

Specification of Letters Patent.

Patented Dec. 28, 1920.

Application filed. June 7, 1919. Serial No. 302,426.

principalobject of the invention isto provide a combination lock with means for cutting off the carbureter and circuit.

Another object of the invention is to provide means whereby an alarm will be sounded when an unauthorized person attempts to unlock the device.

The invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a front fragmentary view showing the invention placed on the dash of an automobile;

Fig.u2:is a detailed sectional view of the valve for controlling the fuel supply;

Fig., 3 is a longitudinal sectional -view withthe parts, in unlocked position;

Fig.v t'is a like view with the parts in locked position;

i Fig. 5 is a plan view with the parts in supply of gasolene to the for breaking the ignition "locked position and with the cover of the case removed;

Fig. 6 is a rear view with the parts in locked position;

Fig. 7 is a section on line 7-7 of Fi 4.

In these views 1 indicates a case which may be connected with the dash '2 of the automobile, said dash being provided with an opening 3 which registers with the case and which is covered by the plate l. The said plate and the front of the casing are provided with suitable openings for recelving the keys 5, which are 1n the form of spring plungers, and the lock ng lever 6. This lever is pivoted intermedlate its ends to the lug 7 projecting upwardly from the bottom of the case and the inner end of said lever is forked and engages a cross pin 8 carried by a vertically movable rod 9. This rod passes through an opening in the bottom of the casing and is normally held in its lower position by means of the spring l0. The upper end of the rod, within the caslng, engages a tubular member 11 which is slotted, as at 12, to receive the pin 8. The upper part of the tubular member 11 is provided with an opening 13 to expose the upper end of the rod 9 for a purpose to be hereinafter described. This tubular member is also provided with a slot 14: at its rear part through which projects a pin 15 carried by the rod 9 and this pin engages in an opening in a plate 16 carried by an insulated block 17 which is secured to a lower switch blade 18. This blade is pivoted at one end to a contact 19 and has its other end adapted to engage with the opposite contact 20. These contacts are suitably located in the ignition system of the automobile so that when the blade is raised the circuit to the motor will be broken. The rod 9 has its lower end connected by a flexible member 21 to the stem of a valve 22 which is located in the valve casing 23 placed in the fuel supply of the motor. The valve 22 is normally held in inoperative position with the supply line open, by the spring 24.

It will thus be seen that when the rod 9 is in its lower position the fuel line to the motor will be opened and the circuit to the ignition means of themotor will be closed so that the motor may operate. Vi hen the lever 6 is depressed to raise the rod 9 the valve 22 will be raised to shut off the supply of fuel to the motor and at the same time the blade 18 will be raised to break the circuit of the ingnition means and thus the motor will be unable to operate.

l/Vhen the rod 9 is raised a notch 25 therein will be engaged by a latch member 26 which is pivoted to a bracket 27 carried by the case and having its lower portion secured to the tubular member 11. This latch means is of substantially L-shape with one of its arms provided with upwardly extending portions which engage the pivot pin. That part of the rod directly above the notch is flattened to make the lower wall of the notch project beyond this flattened part so that this lower wall will come in contact with the latch member to rock said member and force its edge into the notch,

said edge working in the opening 13 in the tubular member 11. In this way the rod 9 is held in raised position against the tension of the spring 10.

The latch member is released from the rod 9 when the proper keys are pushed inwardly and the means for doing this consists of a plurality of push rods 28 slidably mounted in the bracket 27 and plate 29 and normally held in their outermost positions by the springs 30. These push rods have their outer ends offset so that they will come op posite the ends of the keys 5, to be engaged by said keys when the same are pushed inwardly. Each push rod is provided with a notch 31 for receiving the upper edge of the latch member. These notches 31 are arranged at different points on the push rods so that certain of the keys must be pushed in vardly to place all the notches in alinement and thus permit the latch member to enter said notches and thus release the rod 9. I In this way one must know just which keys to push inwardly to unlock the device as otherwise he cannot place the notches in alinement. As soon as the notches are in alinement the pressure of the spring 10 on the rod 9 will cause the latch member to rock on its pivot so that its upper end will enter the notches in the push rods and its lower edge will leave the notch in the rod 9. The latch member will remain in engagement with the notches until the lever 6 is again manipulated to raise the rod to again rock the latch member and thus cause its upper edge to leave the notches and permit the push rods which have been moved, to return to normal position.

I provide a locking plate 32 for preventing the keys from being pushed inwa -dly when the parts are in unlocked position. This plate is slidably mounted in the rear of the front part of the case and is normally held in its upper position by means of a spring 33. The plate is moved to its lower position by a lever 34 pivoted to the lug 7 and having one end engaging a flange on the lower edge of the plate 32 and its other end forked and resting on the pin 8 carried by the rod 9. Thus when the lever 6 is actu ated to raise the rod 9 the lever will lower the plate 32 so as to permit movement of the keys. in this way a person is prevented from securing the combination by manipulating the keys while the device is in inoperative position and this arrangement also prevents the latch member or plungers being damaged by said plunger rods being moved while in engagement with the latch member.

I also provide means for sounding an alarm when an unauthorized person should attempt to manipulate the keys to unlock the device. These means consist of a switch blade 35 pivoted to a contact 36 and having its free end adapted to engage with the con- 'act 37, said contact being located in the darm circuit. The blade 35 is pivoted to the blade 18 by the link 38 so that when the clade 1 is r ed by the rod 9 to break the ignition circi said blade 35 will be moved into losed position and when the blade 18 is lowered said blade will also be lowered to break tl "l m circuit. The contact 37 is norm vcted from the alarm circuit rminzzl 35) of the circuit is connee with a spring blade 40 which has its free end normally spaced from the contact 37 so that the alarm circuit is not completed when the blade 35 is in closed position.

Said blade 40 is placed in such a position that it will be engaged by the ends of the push rods when the keys are pushed inwardly to their full extent. In this way if a person not familiar with the combination should attempt to unlock the device by pushing in the keys he would force the ends of the plunger rods against the spring blade and thus complete the circuit to the alarm causing the same to sound and thus notify the authorities that an attempt is being made to steal the automobile. However, when the proper combination keys are pushed in, the plunger rods operated thereby will release the parts before their ends come in contact with the spring blade so that the switch blade 35 will be lowered and thus break the alarm circuit before the spring blade is pushed against its contact so that the alarm will not be sounded.

It will be seen that the device can be locked simply depressing the lever 6 and that wnen so locked the fuel supply will be cut and the ignition circuit broken and the alarm circuit set. If any of the keys should be pushed in the alarm circuit will be closed to sound the alarm and it will be impossible to unlock the device unless the proper combination keys are manipulated to place all the notches in alinement. While the device is in locked position any one or all of the keys may be pushed in without unlocking the device as the push rods will have free movement as the latch member has its up or end below the movement of the rods. by pushing in the proper keys the parts will be released so as to close the ignition circuit and permit the fuel to flow to the motor.

hat I claim is 1. In combination with a fuel supply valve, an ignition circuit switch and a pair of alarm switches, a casing, a movable member therein connected with the valve and switches, an operating lever for moving said member into a position to close the valve and open the ignition switch and close one alarm switch, a latch. member for holding said mov' able member in operative position and lock combination means for releasing the latch member, said means closing the second alarm switch if the wrong combination parts are manipulated.

2. In combination with a fuel supply valve, an ignition switch and a pair of alarm switches, a casing, a movable member therein connected with the valve and switches, an operating lever for moving said member into a position to close the valve and open the ignition switch and close one alarm switch, a latch member for holding said movable member in operated position, notched push rods for permitting said latch member to release the movable member, said push rods having extensions for engaging an element of the other alarm switch for closing the same and colcsbination keys for actuating said push ro 3. A device of the class described comprising a casing, a movable member therein, a fuel supply valve connected with said member, an ignition switch connected with said member, an operating lever for moving said member into locking position to close the valve and open the switch, a latch member for holding said member in locking position, combination means for releasing said latch member and means for preventing the movement of said means when the parts are in unlocked position.

In testimony whereof I aifix my signature.

HOMER E. GILLAND.

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