US1450578A - Valve-spring compressor - Google Patents

Description

' 1,450,578 G. w. CARY VALVE SPRING COMPRESSOR Apr. 3, 1923.

Filed Mar'. 14, 1921 A TTURNE Y.

Patented Apr. 3, 1923.

UNITED Stmas FATEM* @FISICELi GEORGE W; CARY, or GREENFIELD, MASSACHUSETTS.

VALVE-SPRING COMPRESSOR,

Application filed March 14, 1921.

pressthe valve springs so as to enable the pins which are employed to hold snch springs under compression, to be inserted or removed, and consists essentially of anA L- shaped shank- `having serrations inthe outer edge'l of! its ,upstalnding' part, and provided withV a valveengagingA member at the free end of its ,horizontal part, ka slide mounted orf said upstanding part andhaving a fork or equivalent member which extends over saidyhorizontal part, a lever or handle provided with yengaging means fer any of the teh'oriedby said serrations, and pivotal ci une gmme'ans between said slide and saidfha'iidle, together y with such other vparts aiidxmembers as may be'necessary orl desirable in order te render the device complete in",e'veryv respect, all as hereinafter set forth. This.valvespringcompressor is especially designed for use in connection with Se-called valveinihead motors. i l

Theprimary` object of my invention A is to prodnce a very simple,l inexpensive, clonipac and convenient deviceof the character desH ibed above, which consists of few parts thatfniay be easily and quickly' assembled separated,canbe readily adjusted to adapt it for, the compressionL of springs ,of different lengths, and is Strong and durable. Thisfcoinpressor is very simple in opera,- tion aswell asin construction, and, owing te tlrier?latterfact,y the same when taken apart can be packed compactly for shipment, and stered iii acomparatively small space when itA :in use, l

herobj ects" and'advantages will'fappear iii: the coiirse: `of the following descriptidnf ltt'ain theol-)jects and secure the adva`i`1`- 50 offmy'invention by the means illusd the accompanying drawings",l 1n Whihe 1 y y l is atop 'pla-n Sofa valve-spring A r which embodies apr-actical' form "ention; a{1i'd,.l `ig-V 2,v aside'el'e'va'- y cerpressb'r," the increible; parte Serial No. 452,151.

being shown in elevated Yor raised position or condition in full lines and partially'. depressed, as when the device is in' the lact of compressing a. spring, in `broken linesfy Similar reference characters designate similar parts throughout the several- =v1ews.-

The valve-spring compressor* illustrated 1n the drawings comprises a vertical Shank 1 and an extension 2 at the base of and at right-angles to said shank' andformingfa part of or being integral with they Same,v said shank being deeply serratedin theedge opposite to that from whchsaid extension projects, to form a series of'teetlr,` which` 70 teeth areof considerable length andnincline at a` sharp angle fromytheirinner'ends downwardly.andoutwardly or forwardly., -aidf Said extension being provided at itsfouter, rear, or free end withi a' center posti' fora* valve; a n slide, the construction=of which will presently be described, adapted `to`-be` mounted on said Shank, saidsli-de having a forlr that extends over lsaid extension'and said post, which latter is directly belowthe space between the `outer terminalst ofthe arms of saidforlr; aleveror handle 7`2p1f6= videdjw'ith a pivot 8 to engage betweengany two of said teeth; anda Ipiv'etal"*connection between said slide and Said handle, such connection in the lpresent example' consisting of a pair oflinks"9.

The slide referred to inV the 4preceding paragraph consists of Shortg'front andrear bars 5 and'lO, respectively, vwhich arefof the same thickness asthe shank/1, and in'prac# tice slide up and down on opposite l0ngitu'dinaledges of shank, said bar s'lidifngpast the teethk 3, and a pair of connecting plates or side pieces l1` whicharerivetedor otherwise secured at l2 to Said barsg/said side pieces extending across both sides-fof said shank and on to both sides of saidflbars. The fork `6 is an integral part of the rear bar 10.

The handle 7 may be-made in'v anysuitable form," but is preferably bifurcatedat one terminal, and providedat `Sucht"terminal with the pivot' 0r pin'.` 8; The` aforesaid: bi# furc'atedterminalis4 represented, at',v 13;? and the .-sp'ace between the arms offthesameis su'iiicie'nt in width, and in depth'ascwellrto The rear terminals of the links 9 are pivoted at 14 to the slide, such pivot passing through the side pieces 11 and the bar 10 behind the shank 1, while the forward terminals of said links are pivoted at 15 to the handle 7 said last-named pivot passing through the bifurcated portion or'portions 13 of said handle. Thus it is seen that there is a link 9 on each side of the shank 1, slide, and handle 7, and that said slide is actuated up and down, through the medium of said links, when the pin 8 is in place between two of the teeth 3 and said handle is rocked and as it moves up and down with an oscillatory or swinging motion on said pin.

The upper, pointed end of the pin 4 is designed to enter the center hole' in a valve, while the fork 6 is designed to engage a washer or other member on the valve-stem above the spring thereon.

In assemblingl the parts, after the different members of the slide have been connected or fastened together, andthe links 9 have been pivotally connected with said slide and with the handle 7, the slide is slipped on over the top of the shank 1, with the fork 6 extending rearwardly and the handle 7 in front.V The device is now ready to be adjusted for use. Adjustment is`V effected by moving the slide up or down on said shank, as and to whatever extent may be necessary in order to permit the pivot 8 to be engaged with the required tooth 3, that is to say, with the tooth that will locate the handle 7, the

" latter then swinging from and being supported by the links 9, in a positionto elevate the forward terminal of said handle some` what above the horizontalplane in which which it is desired to remove, and with the v fork 6 above such spring or an intervening washer or other member, and then the handle 7 is grasped at the forward terminal and depressed while fulcruming on the4 pin' 8, with the result that the slide, with said fork. through the medium of the pivot V15, links 9, and pivot 14, is depressed and said spring correspondingly compressed.

The handle 7 at this time is moved from the full-line positionY to and through the broken-line position shown in Fig. 2,' and may be swung downwardly and rearwardly far enough Vto carry the central longitudinal plane common to the links 9 behind and below the pin 8, so that the handle and connected parts operated thereby are locked, andv remain locked until said handle Vis swung forwardly and upwardly to an extent which carries the 'aforesaid plane of the links 9f'forward of and above'rsaid pin, so that the parts are unlocked,

While the valve-spring is under compression, the pin which confines the lsame in place above the valve is taken out, thereby making` it possible to remove said spring after taking away the compressor. Before taking away the compressor it is necessary, of course, to swing the handle 7 upwardly and elevate the slide to an extent suflicient to release the spring. lVhen it is desired to replace the spring, the compressor is employed to compress the same while the pin is inserted in the valvestem, and then said spring is released to the restraint afforded by said pin, the operation of the compressor being the same in this as in the first case.

It has not been deemed necessary to en cumber this application with illustrations of a valve and its spring, together with the other closely connected or associated parts and members, because the application and operation of my compressor will be sufficiently well understood without such illustrations.

At 16-16 in Fig. 1 are represented two i compressor herein shown and described may be Vmade without departing from the spirit of my invention or exceeding the scope of what is claimed, I am aware that serrated bars, slides, and operating handles have been variously combined and used before for the ,i

purpose of compressing valve springs, and do not, therefore, seek to claim such a combination broadly.

l/Vhat'l do claim as my invention, and desire to secure by Letters Patent, is-

V1. The combination,` in a valve-spring compressor, with a serrated shank having an angular extension which is provided with an engaging member for a valve, of a slide mounted on said shank and having -a fork to engage a valve spring, an operating handlel provided with anon-oscillatory engaging member to contact with said shank, connecting means between said handle and slide, whereby the handle may be moved independently of the slide, said engaging member being the only medium of direct connection between the handle and shank, and capable of entering-any of the serrations of the shank, and said connecting;

means 'being connected with said handle forward of said engaging member.

v2. The combination, in a lvalve-spring compressor, with a shank having teeth formed' on its front edge and a rearward extension at the base, such extension being provided with an engaging member for a said handle.

3. The combination, in a valve-spring compressor, with a shank having teeth on its front edge and an angular extension at the base, said base being provided with means to engage a valve, of a slide consisting of bars to engage the front and rear edges of said shank, one of said jaws having a member to engage a spring, and of side plates embracing the sides of said shank and secured at their terminals to said bars, a handle having a pivot adapted to engage any of said teeth, and links having their upper or rear terminals pivotally connected with said slide and their lower or forward terminals pvotally connected with said hand-le.

forward edge to form a series of teeth, and p having an angular extension at the base, which extension is provided with an engaging member for a valve, of a slide consisting of front and back bars and side oonneeting plates, the former embracing the longitudinal edges and the latter embracing the sides ot' said shank, and said rear bar having a member adapted to engage a valve spring, links pivotally connected at their upper or rear terminals with said plates and rear bar, a handle bifurcated at one endto receive said shank and provided with a pivot pin to engage any of said teeth, the lower or forward terminals of said links being pvotally connected with said handle between saidpivot and the free end of the handle.

GEORGE W. CARY. Witnesses:

PHILIP J. DARLINGTON, WILLIAM C. CONANT.

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