US1608883A - Valve tool - Google Patents

Description

Civ

Patented Nev. 30, 1926.

1,808,888 PATE-Ni" enr-ice.

LE Roy averne, or Liiviii, eine,

VALVE Toor..

Application filed June 8,-, 192.6. Serial No. 114,476.

This invention relates Vto valve tools, and

more panticularly to a device tor compress.- ing and holding;` compressed the springs of the poppet valves of. internal combustion engines While removing` the retaining` device, So lthat the valve proper .may be-ieniloved;

in important lobject ofthe. invention is to provide a device so constructed that accidental slipping-oli the springis effectually pnevented and at thesaine time means are provided whereby the spring may be removed when desir-ed.

A Jiur-ther object Vof the invention. is to;

provide a device of this character so constructed that While holdingt-he spring, -lt affords ready acc-eesto and a clear `View of the retaining device, whereby-the springseat is` maintained in proper positien upon the stein ol the valve.

A stillI further. object; ofthe: iniiention,

to provide a device of this character,` so cen-` etrncted` that it preindee ainple cleaiiance to enableaccess tcfthe retaining` device.

These and` other olcjeets fatt-nin by the construction shown in the acceinpanyingr drawing, wherein forthe piinpose oif-illn'sv tration is shoiyn a` preferred `einleodiraient of my invention and Whereinzf- Fig. l is a side elevation. olV a tool con.-

Stiucted in accordance Withiny invention showing the saine inthe-spring compressingl position;

Fig. 2 is n` plan View of--t-he tool;v andV Eig. 3 is a.V vertical SeCtOna-h View `taken through the janv ends-olfv the. tech Referring. non.y inoige partieularlyl to the drawing, the Ynunierale` l0. and. il-.l designatenpper, and loiver levers ,resi ect-ively,i the up-` per lerelblneforlned.intermediate its. ends with a dominan-Cllr projecting liigzlZilnfl-thef lower leverv witlnupwardly proj ecting titane verse-ly epa-ced ears yl?) ,between `Which the lower end ot the lug-lniaylbe arranged-for the reception ofga pivot` lll for cennect-ingthe,

levers. Ercan the ears 13, thelower lever.

curveeV upwardly at l5 toward one end; thereof andl in the ont-ei"` end ,ot` thisA curved.-

poiftion the upper surface-,et clineel downwardly, -as n at i6.V naht-his end Vot the lever ie-iforllredat `17, to pr vide aijins. lcd-receiving.therebetween the pnelitrod-lQ eti-thepcpgetl naine mechat-lie lever innisni of.' internal combustion @Dgine-,-

while the arins lll-.reet upon; thepush red guide 2O.`

The corresponding; end of the; iipperjaiv is Slotted-.atitsentreinity,V as in dicated at 2l, to provide a` space for the passage of the stein 22 ojthe push rod. In- Wardly .ofthe-slot 2l, this end of the upperle-veris f'oi'nied with a longitudinally elongated opening-Q8 oii-I g-rea't-erwidth than the slot and with which tlieinneibend 0i the slot connnunica-tee. rlihe upperA snraceeolf the extremity `et the va-i'nie lfl lerinedhy shittingf the end of the lever are provided With lngs -llreni-theee ings toward-thev pivot or'` the derer,V the erinearegradually thickened at 2,", for aA purper-ae presently toappear.

Bey-ond the pivot-ali connection of 'theleviers :frein the jaiv ende-thereofD adjacent 'acee of the levers are` pre-vided with opposing lugs 27 sez-:tending` into they oppositeendefo. a spring' QS, the unctionotiivhich isto urge the jaw ende ol tlieljevereinto; engagement niitl'i one another. .'l'he oppoeite ends of. tlie-leversere lfor ned aeiliandles, and the upper lever iepnovided withn a slengitudinelly extending slot- 29' loritlie recep` tionof one arin 30,.ofalbell-eiianl;,lever 3l. llhieli-ellgcranl; lcv-,er pivotedtoitlie upper. lever and .hae` its` second arm.` B2i directed through,- a slet- 83. tei-ined in` theilower leverh and havingl its` rear edge Vforn'iedae` atoeth Se ier,Select-iveengagementA inanyy one of. a Series. 0f IlQtClleS 3,5 ,torlnecli in; the. rear `face 01"; the. anni 32.V llea-rivardly of the pivott of, the L ll-crianlgthe und-er surface oi the upper arinhas. orined-lthereon a lugV 37, pro? vided with` an opening;r il-8 in which irl-.cngaged one end ot ai Spring 39,V the oppeeite end etz-Which ie engagedthron gli1 ani opeii ing e@ ter-,ined in the win32-olf the hellv cra-nir lenerininiediate-ly `ljieleni. thegunner surface-ot the upperleve-r.

`'Iliey.epring 28, 'as 4hereinloetere stated.` normallyv niaintainethe jaw-ende oft the tn cl in engagingrelation, so that theel-jaw ende provide ataper oit-Wedge format-ien l'oi1 in ser-tion between the spring` seat Ll-l et 'the valve spring ,42. .lV-.hen the tool is pre-perly positioned. and the lugs 25 are arranged at the rear face oftliis,spiingseet, the handle ende` of the lever` are `forced togetliery ceinllessing the spring- .l-Q andv eleifatinig'- the Spring sent .4l 'freintlie retdining` element 43 (usually pin). The-large opening, i permite-,this reta-inine;.Y elementl texheg rendi y viewed and engaged for ieinevaly thereoi".E and after tliefpn is removed., the. vii-live-v @t course inay he bodilyremoved.` At tl'iieI tiine, the upper surQziCe-kogf, the jai-v, end of the spring tool will be arranged at an inclination to the axis of the spring, so that the spring and spring seat have a tendency to move toward the free end of the jaw of the upper lever. This movement is limited by the lugs 25, so that any accidental disengagement of the spring is avoided. When, however, it is desired to remove the spring, all that is necessary is that the outer end of the tool be bodily depressed, so that the pring may be drawn toward the opposite side Vfrom that in which it normally tends to vmove when it may be very readily removed.

Vlhe latch provided by the bell-crank lever 3l and its engagement with the lower lever will, of course, maintain the aws in adjusted position and at the same time may be very readily released by placing the thumb upon the thumb seat la formed upon the rear end of the arm BO and depressing the same againstthe action of the spring- 39. The cuate curvature of the lower jaw provides between the upper and lower jaws sufficient space to permit ready access to the pin from beneath the upper j aw, if this is found necessary or desirable.

Vln the construction of the tool, any suitable materia-l may be employed and this material reinforced by thickening at points where great strain is liable to occur.

Since the construction hereinbefore set forth is obviously capable of a certa-in range of change and modification without matew rially departing from the spirit of the invention, I do not limit myself to such specific structure except as hereinafter claimed.

l claim l. A tool for use in removing the spring seat retainers of the springs of poppet valves of internal combustion engines, comprising a pair of levers pivoted to one another at points intermediate the ends thereof, one end of one of said levers being slotted for the passage of the valve stem of a poppet valve and to provide arms for engagement beneath the spring seat of the spring of the valve, the outer ends of said arms being pro vided with lugs for engagement with the sprino` seat, the upper surfaces of said arms inclining downwardly toward said lugs.

2. A tool for use in removing the spring seat retainers of the springs of poppet valves of internal combustion engines, comprising a pair of levers pivoted to one another at points intermediate the ends thereof, one end of one of said levers being slotted for the passage of the valve stem of a po-ppet valve and to provide arms for engagement beneath the spring seat of the spring of the valve, the outer ends of said arms being provided with lugs for engagement with the spring seat, the upper surfaces of said arms inclining downwardly toward said lugs, said lever inwardly of said end and between said end and the pivot having a relatively large opening with which the innery end of the slot communicates.

3. A tool for use in removing the spring seat retainers of the springs of poppet valves of internal combustion engines, comprising a pair of levers pivoted to one another at points intermediate the ends thereof, one end of one of said levers being slotted for the passage of the valve stem of a poppet valve and to provide` arms fo-r engagement beneath the spring seat of the spring of the valve, the outer ends of said arms being provided with lugs for engagement with the spring seat, the upper surfaces of said arms inclining downwardly toward said lugs, a spring normally urging said end of the lever into engagement with the corresponding end of the other lever, and means for retaining said ends of the levers in spaced relation against the action of the spring.

4. A tool for use in removing the spring seat retainers of the springs of poppet valves of internal combustion engines, comprising a pair of levers pivoted to one another at points intermediate the ends thereof, one end of one of said levers being slotted for the assaOe of the valve stem of a Jon )et valve and to provide arms for engagement beneath the spring seat of the spring of the valve, 'the outer ends of said arms being provided with lugs for engagement with the spring seat, the upper surfaces of said arms inclining downwardly toward said lugs, a spring normally urging said end of the lever into engagement with the corresponding end of the other lever, and means for retaining said ends of the levers in spaced relation against the action of the spring including a bell-crank lever pivoted to the opposite end of the first-named lever, one arm of the bell-crank lever extending adjacent the second lever of the pair and having notches for coaction with a tooth carried by the second lever of the pair.

5. A tool for use in removing the spring seat retainers of the springs of poppet valves of internal combustion engines, comprising a pair of levers pivoted to one another atpoints intermediate the endsv thereof, one end of one of said levers being slotted for the passage of the valve stem of a poppet valve and to provide arms for engagement beneath the spring seat of the spring of the valve, the outer ends of said arms being provided with lugs for engagement with the spring seat, the upper surfaces of said arms inclining downwardly toward said lugs, a spring normally urging said end of the lever into engagement with the corresponding end of the other lever, means for retaining said ends of the levers in spaced relation against the action of the spring including a bell-crank lever pivoted to the opposite end of the first-named lever, one arm of the bell-crank lever extending adjacent the second lever of the pair and having notches for eoaetion with a tooth carried by the seeond lever ot the pair, and a spring oonneeting the hrst lever of the pair and sad arm of the bell-crank lever and Constantly urging said arm in a direetion Jfor engagement with said tooth.

G. in a tool of the character described, a pair of levers one having intermediate its ends a lug and the other having intermediate its ends a pair ont ears between which the end of the lug may be extended, a pivot extending through the lug and ears, one end ot the first-named lever being slotted to permit passage ot the valve stem ot a poppet Yalve and to provide arms for engagement beneath the spring seat of the poppet valve, the corresponding end of the other lever being slotted for the passage of a tappet and to provide arms to rest upon the tappet guide, means normally urging said ends o'f the levers into engagement with one another, means tor locking the levers with said ends in separated relation, the arms of the firstnamed lever being provided upon their ef;- tremities with upwardly racing lugs for engagement with the rim ot the valve seat.

ln a tool of the character described, a pair oi' levers one having intermediate its ends a lug and the other having intermediate its ends a pair of ears between which the end oi the lug may be extended, a pivot extending through the lug and ears, one end oi? the hist-named lever being slotted to perinit passage ot the valve stem of a poppet valve and to provide arms tor engagement beneath the spring seat of the poppet valve, the Corresponding end of the other lever being slotted o'r the passage of a tappet and to provide arms to rest upon the tappet guide, means normally urging said ends ot the levers into engagement with one another, means for locking the levers with said ends in separated relation, the arms ot' the firstnamed lever being provided upon their extremities with upwardly `lfaeing lugs for engagement with the rim of the valve seat, the upper faces of said arms when the levers are locked in the last-named position inclining downwardly toward said. lugs.

8. In a tool ot the Character described, a pair of levers one having intermediate its ends a lug and the other having intermediate its ends a pair of ears between which the end ot the lug may be extended, a pivot extending through the lug and ears, one end ot the first-named lever being slotted to permit passage of the valve stem of a poppet valve and to provide arms for engeeement beneath the spring seat ot the puppet valve, the Corresponding end of the other lever being slotted for the passage of a tappet and to provide arms to rest upon the tappet guide, means normally urging said ends of the levers into engagement with one another, means for looking the levers with said ends in separated relation, the arms oi. the tiret-named lever being provided upon their extremities with upwardly facing lugs lor engagement with the rim ot' the valve seat, the upper faces ot said arms when the levers are looked in the last-named position inelining downwardly toward said lugs, the first-namedlever inwardly of the ends thereof having formed therein an opening for the passage of the tingers, the inner end oll said slot communicating with said opening.

ln testimony whereof l hereunto aiiix my signature.

LE ROY F. JUSTUS.

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