US1087033A - Reversing-valve mechanism for internal-combustion engines. - Google Patents

Description

L. O. MESKIMBN. v BEVEBSING VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLIOATION'IILED JAN. 29, 1913.

Patented Feb. 10, 1914.

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LESLIE c. MESKIMEN, or WATEBLOO, IOWA.

" aavmaimivama MECHANISM FOR INTERNAL-COMBUSTION enemas.

Specification ofLettersPatent.

Application filed January 29, 1913. Serial no. 744,939.

To all whom it may concern-1 Be it known that I, LESLIE C. MEsKrMEN, a citizen of the United States, residing at \Vaterloo, in the county of Blackhawk and State of Iowa, have invented new and use: ful Improvements in Reversing-Valve Mechanism for InternaLCombustion Engines, of which the following is a specification.

This invention relates to reversing valve mechanism for internal combustion engines,

the object in view being to provide an 'extremely simple valve arrangement, especially adapted for use in connection with fourcycle internal combustion motors, the arrangement being such that the relative positions. of the valve and valve'gcar may be quickly and easily changed, so as to adapt the engine to operate in either direction desired.

Another object of the invention is -to provide, in connection with a valve gear wheel and a cam mounted thereon, locking means for holding the cam in either one oftwo positions, to which it is adapted to be ad justed.

With the above and other objects in view, the invention consists in the construction, combination and arrangement ofparts, as will be hereinafter more fully described, illustrated in the accompanying drawings,

and pointedout in the claims hereunto ap-.

pended.

In the'drawings: Figure 1 is'a View in elevation, looking toward the outer face of the cam gear of an internal combustion engine, illustrating the two positions of the cam carried by said gear wheel. Fig. 2 is an inner face view of the same.

Referring to the drawings, 1 designates the usual cam gearwheel, or in other words, the gear wheel which is mounted on the cam shaft 2 of an internal combustion engine, said gear 1 being usually made twice the 'size of the gear wheel on the engine shaft, so that the cam shaft 2 will revolve at half the speed of the engine shaft.

In carrying out this invention, the cam 3 which operates the valve of the motor is provided with a hole, adaptingv it to be mounted on the shaft 2, said cam fitting loosely on the shaft, so that it .may be turne'dto either one of two positions, as illustrated in Fig.1, the. cam, when occupying one position, being adapted to operate the valve, so as tocause theengine to turn 'in a corresponding direction, and when the- 4 end of the slot 5 to the other. done, the locking dog 6 is again thrown into cam is reversed or turned to the other posi- Patented Feb. 10, 1914;.

tion indicated, it will cause the engine to operate in the opposite direction.

The means for shifting the cam will now be described.

The cam is provided at a'suitablc point with a pin l which is adapted to move lengthwise of an arcuate slot 5 formed in the body of the gear wheel 1, as shown in Fig. 1, said slot 5 being concentric with the shaft 2. The slot- 5 is just of suiiicient length to admit of the necessary movement of the pin 4 to hold the cam 23 at the extreme limit of its movement in opposite directions,

and in order to lock the cam in its adjusted posltion on the gear 1, I provide a locking dog 6, having the end thereof conea ved, as

shown at 51, forming a shoulder which is adapted to bear against the pin 4 in the manner illustrated in Fig. l.

The locking dog 6 is'pivotally mounted, at 8, on the cam gear -1, and has connected thereto one end of a coiled spring 9, the ten sion of which is-exerted on the dog 6 to hold the end thereof in engagement with the pin.

4: of the cam 3. When it is desired to reverse the direction of rotation of the engine,

the locking dog 6 is thrown out of engagementwith the pin 4, and the cam is then turned, so as to move the pin 4: from one After this is engagement with the pin 4, thereby locking said pin at the opposite end of the slot 5.

It will be observed that the spring 9 serves to maintain a positive engagement between the locking dog 6 and the pin 4 of the. can,

thereby preventing any possible accidental inoppoltune shifting of the cam, during'theoperation of the engine. What is claimed is z.

1. The combination with the cam shaft of an internal combustion motor, of a gear wheel mounted thereon and driven from the engine shaft, said gear wheel being provided with an arcuate slot concentric to the cam shaft, a cam ournaled onthe cam shaft at one side of said gear wheel, a pin on said cam movable lengthwise of said slot, and a pivoted locking. dog for engaging and holding said pin at either end of the-slot.

QJThe-combination with the cam shaft of an internal combustion motor, of a. gear wheei mounted thereon and driven from theengine shaft, said gear wheel :being provided with an arcuate slot concentric to the cam shaft, atcam jpurnaled on the cam shaft at one side of said ear wheel, a. pin on said cam movablejlen hwise of said slot, a ivoted lockingvdog for engaging and hol ing said pin at either end of the slot, and a spring f0; maintaining the engagement between saidlocking dog and pin.

In testimony whereof I afiix my signature 1n presence of two wltnesses.

LESLIE C. MESKIMEN.

Witnesses:

FRED C. KAUFMANN, KING E. BEAL.

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