US1470102A - Valve - Google Patents

Description

Patented Oct'.` 9, 19.23.

wenz PATENT lorries.

FRED RAHM, F LOUISVILLE, KENTUCKY.

VALVE.

Application led December 10, 1921. Serial No. 521,452.

To all whom 'it may conce/m:

Be it known that I, FRED RAHM, a citizen of the United States, and resident of Louis ville, in the county of Jefferson and State of Kentucky, have invented new and useful Improvements in Valves, of which the following is a specification.

My invention relatesto valves and has particular reference to that type of reciprocatory valve commonly used in internal combustion engines.

The princlpal object of the present inven` Vtion is to provide a 'reciprocatory valve which is capable of axial movement, thereby causing the valve seat to wear evenlyand the valve to seat tightly.

A further-object of the invention is to provide a cam actuated reciprocating valve which will possess-af'rotary movement which is due to the novel construction of the cam.

With thc preceding and other objects and advantages in mind, the inventionconsists in the novel combination of elements.' construction and arrangement of parts and operations to be more fully described in the following disclosure, claimed and illustrated in the accompanying drawings, wherein:

Figure 1 is a view artly in section and partly in elevation ofp my improved valve assoclated with an internal combustion engine.

Fig. 2 is a horizonal view. through the S valve stem and surroundin parts.

Fig. 3 is an enlarged fragmentary view partly in elevation and partly in section, and

F ig. 4 is a detail elevation of ta pet embodied in the invention.

eferring in detail to the drawings,

wherein like characters of-reference designate like parts throughout theseveral views, the numeral 5 designates part of an internal combustion engine havinga valve seat-6- upon which the valve 7 is adapted to seat. The Vvalve 7 includes the stem 8 which is reciprocal ina guide 9 formed integral with tlengine part 5. The lower end ofthe sternJ 8 extends in proximity to the upper end of a. tappet 10. v

Disposed between annular shoulders 11 on the lower end of the valve stem 8 is a bearing ball retaining cup 12in which bearing balls 13 are seated. A bearing ball retaining washer 14: is received on the valve spirit of the invention or the cam and stem'S and is held in frictional engagement with the bearing balls 13 by an expansible coil spring 15 encircling the valve,stem 8 and having its upper end bearing against the engine part-5 and its lower end disposed in an annular groove 16 in' the upper face of the bearing ball retaining washer ,14.

The tappet is operated by a cam 17 which is cut away at one side adjacent its apex as indicated at 18 so that one edge of the apexl of the cam will engage the head of the tappet at4 a point slightly oii' its vertical center and cause the tappet to move axially during its reciprocation. As the tap et moves upwardly the lower end of the va ve stem is held into frictional engagement with the upper end of the tappet through the medium of the'expansible spring 15 whereby the valve is caused to move axially with the tappet.

It is to be understood that the form of my invention herein shown and described are to be taken as a preferred example of the same, and thatvarious changes in the shape, size and arrangement of parts may. be resorted to without departing fromthe the scope of the subjoined claim.

Having thus described my invention, what I claim as new and desire to secure and protect by Letters Patent of the United tates is.'

The combination with a reciprocating valve, and any actuating tappet therefor hav,-

ing a circular head, of means holding the valve in frictional engagement with the tappet,V and la cam equal in widthto the diameter of said head registering therewith and provided with converging forward and portloh ofits length only thereby the full widthfofsaid face will engage the head to the valve.

-FRED RAM.

accomplish the initial lifting movement of4 sol rear faces forming an apex to act' against

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