US1142732A - Locking device for circuit-controlling means. - Google Patents

Description

R. SCHOELL.

LOCKING DEVICE FOR CIRCUIT CONTROLLING MEANS.

APPLICATION FILED AUG. 15. I914.

l 142,732, Patent-ed June 8, 1915.

nEmHoLn SCHOELL, or STAMFORD, connnc'rrou'r, ASSIGNOR TO THE YALE & rowur':

manurnc'runme COMPANY, or STAMFORD, CONNECTICUT.

LOCKING DEVICE FOR CIRCUIT-CONTROLLING MEANS, n

Specification of LettersPatent.

Application filed August 15,1914. Serial No. 856,954.

new and useful Improvements in Looking Devices for Circuit-Controlling Means; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to locking devices for circuit controlling means, and more particularly to such as are adapted to control the circuit of the sparking or timing mechanism of internal combustion engines for automobiles and the like,one object of the invention being to provide simple and eflicient means for safeguardingv automobiles by looking the devices which control the circuit connections, especially for cars equipped with low tension magnetos, spark coil and timer similar to the Ford car (Model T) construction.

A further object is to so construct the device that it may be readily. applied to the car, either by the manufacturer, or by the owner, after the car has been used.

With these and other objects in view, the

invention consists in certain novel features of construction and combinations of parts as hereinafter set forth and pointed out in .the claims.

' In the accompanying drawings; Figure 1 is an inner face view, with the base block removed; Fig. 2 is a face view of the base block; Fig. 3 is an end view of said base block; Fig. 4 is'a side elevation of the as sembled device; Fig. 5 is a longitudinal view; Fig. 6 is a sectional view taken at right angles to Fig. 5; Fig. 7 is a transverse sec tional view on the line 77 of Fig. 6, and Figs. 8 and 9 are face views, showing the two positions to which the lock plug may bemoved.

1 represents a base block which may be madeaof fiber or other electrical insulating.

notched blocks 3 of. insulating material mounted within a metal casing 4, the clampmg of the wires being eflected by means of screws 5 passing through said casing and entering interiorly threaded thimbles 6 con- Patented J une 8,

nected with the base block and projecting into holes 7 in the blocks 3, as clearly shown in Fig.6. The insulation is removed from those portions of the electric wires 8 which pass between the insulating clamping blocks so that the naked wires will be exposed for engagement therewith of a spring contact plate 9, whereby the current in said wires may be short-circuited for the purpose of rendering inactive, the timing or other mechanism which said current .is intended I A barrel. 10 is secured rigidly to the casing 4 and contains a lock cylinder 11, in

which the plug 12 of the lock is mounted.

The plug 12 is provided with the usual key slot, and two sets of pin tumblers are mounted in radial flanges 13 on the lock cylinder for locking the plug in either of two positions to which it may be moved. A cam 14 is secured to one end of the lock plug 12, so that when said plug is turned in .one'direction (with the use of a proper key), said cam will engage the fluted or corrugated contact plate 9 and force the same into electrical contact with the wires 8,v thus short circuiting the source of electrical energy and thereby rendering inoperative, the timingv or other electrically actuated means. It is apparent that the parts will'be locked in such inoperative relation when the key shall have been removed from the plug of the lock. With the use of the key, the plug may be unlocked, and turned in the reverse direction, when the cam 14 will be so moved with relation to the contact plate that the resilience of the'latter will cause'it to move out ofengagement with the wires, and thusv establish normal operative conditions. The turning of the plug ineach direction may be limited by means of stop pins 15-16, with which the cam 14 engages.

My improvements are particularly designed for use in protecting internal combustion engines of automobiles, against unauthorized use.

After the device shall have been clamped clamping the device to said dash. lhe annu-- lar nut 17 is made internally with a beveled Wall 18 to be engaged by a pin 19 movably mounted within the inner portion of the barrel 10. The head of this pin is made partially conical and is engaged by the conical portion of a screw 20 which enters the head of the cylinder. With such construction, the annular nut 17 will be locked in place, and when the lock-plug shall have been so turned as to force the short-circuiting spring 9 into contact with the wires 8, the screw 20' will be covered by a pointer finger 21 rigidly secured to the lock-plug 12.

WVith the use of myrimprovements, it is apparent that when the timing or other wires are 'short-circuited and the key has been removed from the lock, it will be impossible to render the circuit operative otherwise than with the use of a proper key, and that as the screw 20 which controls the locking of the nut 17 to the barrel will be covered by the finger 21 on the lock barrel, removal of the device to free it from the Wires, cannot be efiected.

My improvements are simple in construction; eliective in operation to control the operation of electrical devices; may be easily applied, and will be efiicient in preventing unauthorized'tampering with the electrical controlling mechanism' which they are designed to protect.

Slight changes might be made in the details of construction of my invention without departing from the spirit thereof or on a movable part of the lock for moving said contact device, a nut on the free end or said barrel for securing the device to the support, means for locking said nut against removal, and means on a movable part of the lock for protecting the locking means for the nut when the contact device has been operated to electrically connect said wires.

2. In a device of the character described, the combination of a support, a barrel, clamping means for electric wires secured to said barrel, a contact device for said wires mounted in the clamping means, a lock located in the barrel, a cam carried by a-moving part of the lock for actuating said contact device to connect said electric wires, an annular nut on the barrel for securing the device to the support, alocking pin for said nut mounted in the barrel, a screw in the head of the barrel for moving said locking pin, and a finger on a moving part of the lock for covering said screw when the contact device connects said electric wires.

In testimony whereof, I have signed this specification in the presence of two subscrib- REINHQLD SCHOELL.

ing witnesses.

Witnesses;

CHAs. A. BERRY, WALTON B. 'llnomasu

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