US1403379A

US1403379A - Throttle-valve lock for motor vehicles

Info

Publication number: US1403379A
Application number: US344921A
Authority: US
Inventors: Leroy E Bigelow
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-12-15
Filing date: 1919-12-15
Publication date: 1922-01-10
Anticipated expiration: 1939-01-10

Description

- L. E. BIGELOW. THROTTLE VALVE LOCK FOR MOTOR VEHICLES.

APPLICATION FILED DEC. 15, 1919.

Patented Jan. 10, 1922;

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LEROY E. BIGELOW, OF MEDFORD, OREGON.

THROTTLE-VALVE LOCK FOR MOTOR VEHICLES.

incense,

Specification of Letters iatent.

Patented Jan. 11

To all u /mm it may concern:

lie it known that I, LEROY E. BJLGELOW, citizen of the United States, residing at liledford, in the county of Jackson and State of Oregon, have invented certain new and useful improvements in Throttle-Valve Looks for Motor Vehicles, of which the following is a specification.

This invention relates to an improved throttle valve lock, being particularly designed tor use in connection with the throttle valves of motor vehicles although, as will later appear, the device may be otherwise employed, and has as one of its principal objects to provide a simple and efiicient device of this character which will effectually prevent the unauthorized use of the vehicle.

The invention. has a further object to provide a device adapted to be interposed between an engine carburetor and intake manifold and which may be readily operated to block movement of the throttle valve of the carburetor.

And the invention has a still further object to provide a device which may be readil v employed in connection with substantially any conventional type of internal combustion engine. 7

)ther and incidental, objects will appear hereinafter.

in the drawings:

Figure 1 is a side elevation showing my improved device mounted between the carhurcter and intake manifold of a motor vehi clc engine, the engine not being illustrated,

.lfigure-Q is a fragmentary section taken centrally through the device,

Figure 3 is front elevation illustrating the device detached, and

Figure 1 is a detail perspective view particularly illustrating the valve blocking .icchauism of the device.

In order to facilitate an accurate understanding of the construction, manner of use and operation of my improved device. I have. in the drawings. shown the invention in connection with a carbureter and in take manifold 11 of a conventional type of motor vehicle engine. the engine not being ihustratcd since it forms no part of the present invention. As is usual, the carbureter is provided with a discharge outlet 12 the flange 13 of which normally mates with and is secured against the flange 14 of the manifold. Mounted within the outlet 12 i a throttle valve 15 of the butterfly type. This valve is carried by a stem 16 journaled through the outlet and connected to one end of said stem is a throttle valve lever 17, this lever being operable for controlling the valve and thus, in turn, controlling the operation of the engine.

in carrying the invention into efi'ect, I employ a body block 18 shaped to fit between the

flanges

13 and 1 1 of the carbureter and intake manifold respectively, mating therewith. Securing said block in position and connecting the carburetor with the manifold are bolts or other suitable fastening devices 19 extending through said flanges and the block. The block may be formed of metal, fiber or any other approved material and centrally is provided with a passage 20 therethrough registering with the passages of the manifold 11 and outlet 12. Journaled through the body block is a transversely extending shaft 21 extending across the upper side of the passage 20. At one end the shaft is provided with a socket 22 and surrounding the adjacent end portion of the shaft is a boss 23 extending laterally from the body block. Suitably fixed to the shaft within the passage 20 is a locking member or arm 24: and arranged to coact with this arm is a resilient retaining catch 25 therefor. As particularly shown in Figures 2 and 3, this catch is substantially U- shaped and is secured within the passage 20 at its upper side by a screw or other suitable fastening device, the spring arms of the catch being adapted to frictionally receive and hold the arm therebetween. For rotating the shaft 21, a key 26 is employed, this key being provided with an elongated shank freely insertable in the boss 23 to engage at its inner end in the socket 22 of said shaft.

is will be readily appreciated in view of the preceding description, by engaging the key 26 in the socket 22, the shaft 21 may be rotated to swing the arm 24: rearwardly to active position, projecting, as particularly shown in Figure 2, toward the valve 15 to engage at its free end with the upper side aortion of the valve. Movement of the valve will thus be blocked so that upon removal of the key 26, the valve will be securely locked against operation. Unauthorized use of the vehicle equipped with the device will consequently be effectually obviated. For freeing the valve 15, it is simply necessary to for use generally, in connection with again engage the key in the socket 522 and counter-rotate the shaft 21 until the arm 24 is swung forwardly to horizontal inactive position engaged between the spring arms of the catch 25. The catch will then support the arm and prevent accidental release thereof to possibly interfere with the moiemen of the throttle valve. It will accordingly be seen that I provide a highly effective construction for the purpose set forth and a device which may be readily applied to sub stantially any conventional type of motor vehicle engine. lilowever, I do not wish to be limited in this regard since, as will now be appreciated, the device is well adapted internal combustion engines for locking the throttle valvesthereo-f and I, therefore, reserve the right to all such adaptations of the in vent-ion as may fall within the spirit of the appended claims.

Having thusdescribed the invention, what is claimed'as new is:

1. A throttle valve lock including a body provided with a fuel passage, a shaft journaled in the body, locking means carried by said shaft and movable to active position for blocking movement of a throttle valve, and means carried by the body to coact with the first means for normally holding the first means in inactive position. 7

2. A throttle valve lock including a body provided with a fuelcpassage, a shaft, journaled upon the body, a locking arm carried by said shaft and movable to active position for blocking movement of a. throttle valve, and a spring catch carried by the body to coact with said arm. fornormally holding the arm in inactive position.

12k valve locking unit for interposition between a carbureter and manifold includ ing a body block having a fuelpassage therethrongh, and a shaft journaled upon the block to intersect said passage and provided with means movable within the passage to project beyond one side face of the block into the path of the throttle valve of the carburetor for engagement by said valve whereby to block the rotative movement of the valve.

l. The combination with a carburetor having a rotatable'throttle valve,and a manifold,of a block interposed between the carbnreter and, manifold nd having a fuel passage therethrough, and a shaft journa'led upon the hlock'to intersect said passage and provided with an arm movable within said passage to a position projecting beyond one side face of the block in front of the valve for blocking the rotative movement thereof.

5. A throttle valve lock including body having a fuel passage therethrough, a shaft journaled on the body and provided with an arm movable to active position for blocking movement of a valve, and a substantially U-shaped catch having coacting resilient fingers adapted to grip the arm therebetween for holding the arm in inactive position.

In testimony whereof I affix my signature.

' LEROX E; BIGELOVV. [L. s]