US1592177A - Valve-spring lifter - Google Patents

Description

Patented July` 13, 119g@ erica.

rarer CLIFTON BUSCK, GF GOODELL, IOWA.

VALVE-SPRING LIFTER.

Application filed September 23, 1924.

Vthe valve in the Ford type of automobile.

One of the Yobjects is to provide a valve spring lifter for maintaining the coil spring 'under compression while the operator removes the collar retaining pin.

Another object is to provide a construction, wherein the act of compressing tl spring automatically rocks the device into such a position that the pivotal point of the lever is moved across the dead center line where it is held until manually displaced.

` lVith these and other objects in view, my invention consists in the novel features of construction, combination and arrangement of parts as will be hereinafter referred to and more particularly pointed out in the specification and claim.

In the accompanying drawing, wherein for the purpose of illustration is shown the preferred embodiment of my invention,"

Figure 1 is a side elevation of the device;

Figure 2 is a front view thereof;

Figure 3 is a vertical longitudinal section on the line 3-3 of Figure 2;

Figure 4 is a view similar to Figure 3, but illustrating it in position ready to compress a spring; and

Figure 5 is a transverse section on the line 5 5 of Figure 3.

Referring particularly to the drawing byl numerals of reference, 2 designates in dotted lines, the outline of a portion of a gas `engine, in which is mounted the valve stem 3 and push rod 4, also shown in outline, the valve stem having at its lower end, the usual collar 5, upon which is seated and conlined under compression, the lower end of the coil spring 7.

The' device which forms the basis for the present invention is designed for the purpose of compressing the coil spring to permit the rem-oval of the transverse collar retaining pin 18 and thereby the release of the spring and the removal of the valve, and comprises a bifurcated lever 6, the arms 6' of which are pivotally connected at one side of their longitudinal center at 15 with the upper free ends of the arms 8 of a bifurcated strut 9. The lower ends of the arms are bent as at 10 and returned upon them- .selves to provide legs 1l having at their serial No. 739,402.

upper ends, lateral and inwardly extending,

Vopposed concave shoulders 12. which straddle the push rod 4, while the lower ends of the arms find their support in use, upon the engine frame as shown in Fig. 4. As will be observed particularly upon reference to Figure 5, the legs 11 are joined at their forward portions by a webor bridge 14 which serves to prevent spreading thereof under strain, said bridge being turned outwardly at its lower portion to provide afulcrum 1G upon which the device as an entirety rocks during the act of compressing and releasing the spring. lt should here' be remarked that he shoulders 12 serve as positioning means for the lower portion of the device while the concavities therein provide clearance for the collar retaining pin 18 as the device rocks upon thev fulcrum 16. The concave shoulders 12 are adapted to straddle the push rod and to keep in engagement with the rod, when the bifurcated lever is moved on the rocking fulcrum.

Pivoted to the inner end or short arm of the lever at 20 is substantially semi-circular cup-shaped yoke 21, the base 22 of which is cut away or recessed at 24 to straddle the lower end of the valve stem, and to provide a flange which engages the under side of the collar 5 to compress the spring. As will be observed, particularly upon reference to Figure 2, the several elements are so arranged that when collapsed, the arms 6 and 8 lie in parallel relation. The outer or free ends of the arms G of the lever 6 are connected by a web 26 which serves as a hand or linger piece in operation.

From the foregoing description of the construction of my improved apparatus, it will be seen that I have provided a simple, inexpensive and efficient means for carrying out the objects of the invention, and while l have particularly described the lelements best adapted to perform the functions set forth, it is obvious that various changes in form, proportion, and in the minor details of construction may be resorted to, without depart-- ing from the spirit or sacrificing any of the principles of the invention.

Having described my invention and the manner of operation throughout the specifi cation, what I claim as new and desire to protect by Letters Patent is A valve spring litter comprising a bifur-` ruled supporting member haring a fillerlnn on Jrhe loner portion thereof, the lorrer ends or' Arhe arms of said Supporting member being,r turnedhaek'wnrclly into parallel relation therewith, inwardlyv :incl laterally clirecied spared concave shoulders on Said hacknardly turned portions, a web connecting said haekwnrfllr turned portions und provided with n rocking inleium, :l lever pivoted intermediate its length on the upper ends of Suid supportingv inenxher, and n Spring lifting Vol-:e on the inner end of Suid lever.

In testimony whereof I ziix my signature.

CLIFTON H. BUSICK.

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