US1447560A - Tool for removing poppet valves - Google Patents

Description

Mar. 6, 1923. 1,447,560

E. J. MARES TOOL FOR REMOVING POPPET VALVES Filed Aug. 2'?, 1921 ATTO R N EV Patented hier. 6, i923.

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'rooL rola ancrer-frire roer-nir VALVES.

` application ined 'august er, i921. serrano. 495,863.

VTo @ZZ whom t may concern:

Be it known that Al, EDWARD J. .Manns a citizen of the Unitedl States, residing at VVilber, in the Acounty of Saline and State olle'braslra, Vhave 'invented new and useful VTool for Removing Foppet Valves, of which the following is a specification.

This invention relates to tools VJfor removinglpoppet valves.

The object is to provide a tool for use in releasing the pressure of the coiled springs surrounding the stems of p'oppet valves in internal `combustion engines, in order to per'- mit of the removal of the key or pin forming an abutment for one end oi' such springs, so that the Ysaid valve andl stem may be withdra-wn from the valve cage and the seat therein as `well the valve reground.

Another `ob] ect is to Vprovide a simple tool inthe terml ot' pliers having jaws suiiciently wide apart to receive therebetween 'the lower or valve-seat end of the valve cageof an engine and the. spring-engaging washer at the other end thereof, in such manner as to compress the spring when the handles of the pliers are' forced together, thus providing ample room for the operator to remove the transverse pin-in the valve stem, the device being of simple construction and capable of manufacture at a low cost and readily applied and operated by any unskilled person.

A. full and complete understanding of the 1 inventionmay be `obtained from a consideration of Vthe following detailed description,

talren in connection with the accompanying drawing forming a part of this specification; it being understood that while the drawing shows "a 'practical form' of the invention, the latter Vis not coniined to strict conformity therewith, but may be changedor mo'died, so long as such changes or modifications mark no material departure from the salient `features of the invention, as specifically pointed out in the appended claim.

ln the drawing, in which similar rei erence characters designate corresponding parts throughout the several figures 'Fig 1 is a side elevation of the tool applied to the valve cage and valve of an automobile engine, the valve spring being compressed and the key or pin free to be driven out of the stem;

F ig. 2 is a plan view of the saine;

Fig. 3 is a detail sectional view taken transversely through the lower jaw of the tool and showing the manner of supporting the lower end of the valve-cage and the valve thereon.

rlhedevie'e jor' the present invention is especially designed for use in connection with the valves and valve cages of the Buick automobiles, and has heen illustrated in connection with such but, the same maybe used in removing the springs of valves of other makes with equal facility. More or less dil'llculty been encountered in handling these parts or," this particular car, for the reason that the valve cage must be removed from the engine casing or block when it is desired to remove therefrom the valve proper 'for the purpose of` grinding the same andthe valve seat, which latter `is carried at the lower end off said cage. rllhe Vdistance betweenthe lower end of the stemv lcarrying the valve having its seat in the lower end of the cage, and the upper end of the Vspring mounted on top of the cage in surrounding rela .on to the valve'stem, is-relatively-great and prohibits the use of an ordinary tool ot this character, as the compression must be applied at these two distant points. The present device is designed for this purpose.

ln the drawing there is shown a valve cage l, in the form of a cylinder formed of appropriate metal, having at its lower end Van internalvalve seat 2, and its upper end closed as at 8 and provided with an ups'tanding, tu'loular extension 4,'the' said valve cage being adapted to be seated in a socket pro'- vided in' the engin-e `block in proper pos-itio'n over the cylinder, and' adapted 4to be held therein by a threaded nut entering the upper end oi the socket and bearing'agaiust.

the top of "the cage, in the usual marinier,

illustration of the latter elements being,`

however, deemed unnecessary.

A valve disk 5 having the usual tapered peripheral edge, is seated in the seatat the lower end of the cage, and said valve is provided with a central, upstanding stem 6 secured thereto and passing upwardly through the tubular extension e and termihating at a distance above thesamathe said stein having a transverse passageway located adjacent to its upper end for the 'reception of a pin or key 7 projecting out :trom either side of the saine.

A washer 8 is mounted on the valve stem immediately below the transverse pin or key, and a coiled expansion spring 9, surrounding the ,tubular extension 4 of the valve cage and the projecting upper end of the stem 6, is interposed between thev lower face of the washer 8 and the closed upper` end of the valve cage 3, said rspring being adapted, when expanded, to normally hold the valve proper in its seat at the lower end of the cage, in a well known manner.

As thus far described, the elements are those found in the construction or' a valve and cage used in the above-mentioned make of automobile and form no part of the present invention, the object being to provide a tool which may be used to form a support for the valve 5 and the cylindrical cage 1 resting thereupomwhile the washer 8 may be forced downwardly and away from its abutment against the underside of the transverse pin 7, thus compressing the spring 9, in order to remove the said pin or key 7 from its seat in the valve stein.

To this end, the device comprises a pair of jaws 10 and 11, respectively, the jaws 10 being of angularl formation, as viewed from the side, and the jaw 11 being llpreferably substantially straight, as shown in Fig. 1 oi the drawing. The angular jaw 10 is adapted to support the lower end oi the cage 1 together with the valve stem, and is provided with a transversely disposed, somewhat elongated base 12, formed integrally therewith, and provided with a. concave seat 13,

conforming to and adapted to receive the lower convex face of: the aforesaid valve disk 5, and to support the same, togetherA `beingvbifur'cated to provide spaced farms 19, 4having their free ends rounded on their 'top edges to provide noses 20 for the purpose of being wedged beneath the projecting ends of the pin or key 7, and resting upon the upper face of the washer 8.

The upper jaw 11 is extended to the rear, having an intermediate reduced and flattened portion `where crossing the upper angular bend of the other jaw, andprovided with a suitable aperture for the reception Aof the aforesaid, pivotal bolt 16, upon which the same isfulcrumed, the said extension of the upper jaw terminating in a handle 21 or equal length with the handle 17, and adapted to coact therewith, and having the reduced` and flattened portion 22 formed intheside thereof adjacent to the handle 17, so 'that-the outer faces of the two handles are flush with the side edges of the upper jaw 11. Y f

l/Vhen thebase 12 andthe bifurcated end of the upper jaw .are applied tothe valve and cage as described and shown inFig. 1, it will be observed that" the handles are somewhat spaced apart at their free ends, so that a `"urther pressure upon the same may be exerted if desired, by the hand of the operator and the same supported thereby, while the other hand may be employed in extracting the pin or key 7 from its seat the key, and thatthe same may be manu-r factured and sold at a low cost. j

` lWhat .is claimed is l A. device of the` character` described coinprising spaced jawsone of Said jaws hav-V ing a straight, rearwardly-directed exten# sion carrying apivotal bolt-and terminating beyond the boltvin an operating handle, the other jaw having a rearward extension angularly-bent towards the extension of the first jaw, and crossing the same,- and pivotally mounted on the bolt and terminating in a second operating handle, the iirst-named jaw having its active end relatively thin andbiiurcated to provide two horizontally spaced arms for straddling a valve stem to compress the valve spring and washer, the second-named jaw havingla base plate providedy with a seat for the reception of thelower end of the valve and the cage therefor, and adapted to coact with the first jaw in compressingfthe spring to free the pin or key of .the valve stem, when the coacting handlesare forced together.

ln testimony, that l claim the foregoing as my own, 'l have yhereto axed my signature. j j i,

EDl/VARD J. MARES lio

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