US1861445A - Spring compressing tool - Google Patents

Description

J 1932- LE ROY R KLINGLER ET AL 1,

SPRING COMPRESS ING TOOL Filed July 17, 1950 j C rl/5 62 /62.

Patented June 7, 1932 UNITED STATES PATENT OFFICE.

LE ROY R. KLINGLER AND CYRUS E. GOFFEE OF ST. LOUIS, MISSOURI SPRING COMPRESSING TOOL Application filed July 17,

This invention relates to a certain new and useful improvement in tools especially adapted for facilitating the removal and replacement of the valve-springs of an interna combustion engine and has for its object the provision of a tool of the type and for the purpose stated that is simple and inexpensive in structure, conveniently manipulated, and efficient in the performance of its intended functions. 7

And with the above and other objects in view, our invention resides in the novel features of form, construction arrangement, and combination of parts hereinafter described and pointed out in the claims.

In the accompanying drawing sheet) Figure 1 is an elevational view of a tool of our invention, illustrated in operative engagement for removal of a valve-spring of an 1.- head type internal combustion engine of conventional or standard design;

Figure 2 is a side elevational view of the tool in closed or spring compressing position;

and

Figure 3 is a top plan view, partly broken away, of the tool.

Referring now more in detail and by reference characters to the drawing, which'illus- (one trates a preferred embodiment of our invention, the tool comprises a pair of members A and B having preferably the form in side elevation best seen in Figures 1 and 2, and including relatively oblique jaw-supporting portions 1 and 2, respectively, disposed in crosswise relation and pivotally connected, as at 3, intermediate their ends for scissorlike movement.

Also forming part of the member A, is a relatively elongated handle-portion or extension 4 integrally united to the portion 1 by an intermediate jaw-supporting portion 5 preferably camwise rounded on its opposite outer or upper and lowervfaces, reference being specifically made to Figures 1 and 2, as at a, a, for purposes presently appearing. Similarly forming part of the member B, is a relatively elongated handle-portion or extension 6 integrally united to the portion 2 by an intermediate jaw-supporting portion 7 1930. Serial No. 468,579.

having preferably straight or fiat upper and 7 lower faces 6, Z), also for purposes presently appearing.

It may be here stated that the members A and B are each preferably constructed of companion metallic strip-sections permanently fixed together, as by means of interposed spacing blocks 8 and rivets or the like 9, in spaced registering relation. It may be further stated that the co-operable handleextensions A and 6 trend obliquely outwardly and downwardly from the intermediate jaw supporting portions 5, 7, for facilitating spring-engaging and handling manipulae tions of the tool, the one member B being preferably provided at its free outer end with a transversely presented flat disc 6a or the like for convenient palmwise pressure in manipulating spring engagement by the tool.

Straddling, and intermediate its ends pivotally fulcrumed, as at 10, to and upon the jaw-supporting portion 2 of member B, is a jaw C of channel-shape in sect-ion with its legs or'flanges presented downwardly. From the fulcrum 10, the jaw G is extended rearwardly or towards the handles 1, 6, to straddle-wise embrace and for shiftable movement on the intermediate cam-portion 5 of the member A, the jaw C at its rear end being provided with downwardly provided tongues 11 connected across the inner face of member A as by a bolt 12. From the fulcrum 10, the

jaw C is suitably extended forwardly and somewhat obliquely upwardly, as shown, and at its forward end for spring engagement is forked or bifurcated, as at 13.

Similarly straddling, and intermediate its end pivotally fulcrumed, as at 14, to the 'a'\v-su 3 oortim ortion 1 of the member A is a co-operable jaw D likewise of channelshape in cross-section with its legs or flanges presented upwardly in opposition to the like flanges of the companion jaw C. From the bolt 16. From the fulcrum 14:, the jaw D is extended forwardly and likewise at its forward end for spring engagement is forked or bifurcated, as at 17, in registration with the bifurcated tip or nose of the companion jaw C.

As so supported on the member A, B, the forward ends or noses of the jaws C, D, project forwardly in approximately parallel relation.

A suitable spring 18 engages the fulcrums 3, 10, and 14, for yieldingly retaining the jaws C and D normally in spread apart relation, and pivotally attached, as at 19, to the upper handle 4 to swingably depend between the strip-members of the handle 6 for releasable engagement with a pin 20 fixed in the handle 6, is a notched lever 21 spring-pressed, as by a spring 22, to yieldingly retain the same in engagement at a selected notch with the pin 20 for retaining the jaws C and D in spring-compressing engagement.

Our new tool is especially, though not exclusively, adapted for use with that class of so-called L-head automotive type engines, in which the valve-spring pockets are relatively inaccessible by reason of the crowded condition of the other apparatus or parts associated with the engine of the automobile. For the purpose of illustrating such use of our tool, we accordingly fragmentally shown in Figure 1 an engine of the type stated, of which, so far as is pertinent here, E is a valve, F the valve-stem, G the valve-spring pocket,

' and H the coiled valve-spring, which normally at its opposite ends bears or impinges upon the upper and lower walls of the valve-pocket G, as shown. To remove or replace the spring H for valve repair, the tool is engaged at the forward or nose-ends of its jaws C, D, with preferably the end coils of the spring H, the forked or bifurcated formation of the jaws C, D, readily accommodating the valve-stem F in such engagement. The tool-handles 4, 6, are then brought together against the tension of the spring 18, whereupon the rear portions of the jaws C, D, are shiftably actuated on the intermediate jaw-supporting portions 5, 7, and the approximately parallel forward end-portions or noses of the jaws D, C, are caused to move towards each other in approximately a straight path and the spring H thereby compressed, as shown in Figure 2, the jaws C, D being releasably retained in such spring compressing position under engagement of the lever 21 at a selected notch with the pin 20.

The valve E and its stem F, as well as the spring H, may now be readily removed from the engine and, in a reversely similar series of operations, conveniently replaced.

The tool may be economically constructed, may be conveniently and easily manipulated, and has been found to be exceedingly efficient in the performance of its intended functions.

We are aware that changes in the form, construction, arrangement, and combination of the several parts of the tool may be made and substituted for those herein shown and described without departing from the nature and principle of our invention.

Having thus described our invention, what we claim and desire to secure by Letters Patent is:

1. In a tool of the class described, in combination, a first member including a jaw-supporting end-portion, a handle-providing opposed end-portion, and an intermediate connecting-portion camwise rounded on its upper and under faces, a second member including a jaw-supporting end-portion, a handleproviding opposed end-portion, and an intermediate connecting portion angularly disposed with relation to said handle-end-portion and having flat upper and under faces, said members being pivotally connected intermediate their j aw-supporting and intermediate portions in crosswise relation for scissor-like movement, a first aw pivoted intermediate its ends to said second jaw-supporting portion, a second jaw pivoted intermediate its ends to said first aw-supporting portion, and pairs of spaced connected flanges on the respective rear ends of said jaws having loose embracing relation with said intermediate portions for j aw-shifting actuation, said jaws having bifurcated approximately parallel work-engaging opposed ends projecting cooperable forwardly beyond said fulcrums and being movable in opposed relation in an approximately straight path for spring compression on pivoted actuation of said members.

2. In a tool of the class described, in combination, a first member including a jaw-supporting end-portion, a handle-providing opposed end-portion, and an intermediate connecting-portion camwise rounded on its upper and under faces, a second member including a jaw-supporting end-portion, a handleproviding opposed end-portion, and an intermediate connecting portion angularly disposed with relation to said handle-end-portion and having fiat upper and under faces, said members being pivotally connected intermediate their jaw-supporting and intermediate portions in crosswise relation for scissor-like movement, a first jaw pivoted intermediate its ends to said second jaw-supporting portion, a second jaw pivoted intermediate its ends to said first j aw-supporting portion, pairs of spaced connected flanges on the respective rear ends of said aws having loose embracing relation with said intermediate portions for j aw-shifting actuation, said jaws having bifurcated ap roximately parallel work-engaging opposed ends projecting co-operably forwardly beyond said fulcrums and being movable in opposed relation in an approximately straight path for

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