US1447190A - Valve-spring-lifting device - Google Patents

Description

Mar. 6, 1923,

w. 1. TUTTLE VALVE sPRING LIFTING DEVICE Filed May 20, 1920 Patented Mar. 6, 1923. I

s er e whmmnn I: OIfPROVIPENCE RHGDEiISLA'HiD, ASSIGNOR 'romieen xmoss'inee 'comrmw or fewer-lemme; MASSACHUSETTS, e ceerommow or enema IsLlw-n.

vmwE-srnme I-F'rme nEvreE.

Applicationrfiied May 20, 1920. semi "mea time.

To azz whom it m Be it known 1511 111, Where I. T'fi rm,

' acitizen of the United State's and? resident of Providence, in theeounty 6f Preyidence we state of Rhode Island, have invented an Improvement in 'valve-sprhrg L-iftmg Devices, of which the folio-wing is a) specifioation. ..v

This invention relates to devices fer lifting valve s rings: efzthe type-used eon-v neetien with peppet' er other valves e f internal ceifibustien'efiginee v O11eef the objects 161' this inventifen is to; provide a simple and eifeetive "device for :Afiothe'r ebjeetj is to provide i a device of fheebQVe type 'thet will 'besimple in ma nipii'latiqiiland inexpensive to gnmrlrfacture. Another objeet b'ftliis invent on 1s't0f provide-an efii ient velve-spring-li'fting deviee which aybe readily" alpplied tojthe desired .parts eriinternel' leomtuetien engines and in shell manner th'ztt accessibility-i0 the parts desired to" be epemtedepqn will not be 0bin features eztc'onstrfietion, eembimtions i: elenents e dermn 'em iite 6f parts whieh will be xemplifiea in the st ucture herein described and the scepe efthe epi liee ien of which will be indieeted in "the fol-lewi g In; the accompa ing 'dmmngs :ml vvhl h is shown one preferred enibedim nt o f this sw en: l Fig.1 1s a, fronteb amon,

I Figg s gide elevation of vel' spring i ig-"his' aperspe tiv yiey'v" (if a, lifting device as applied use; teen-interm1 combustion engine, only suehiilliis'tretive parts h t rb esh yn re-ne sary in' the aq gipli'eatien of this device."

Referringnow ted the drawings, there is 7 HOW i lroff efl be oe QPPO w A t r L ne we neeteii together by n eewezriily gex te iihng,

saddle portion, IQfOrTned pref erelily integrai therewith. Thegmembers' '10' and 11 are provided with upwardly extending lugs: 1:5; whieh-me be fermeclintegmhy I members themselves and by u turn-ingor stamping Such lug'S'f'IOni the initial metal plate er which the members; 10 wand 11' Bare formed. The members 10 and'll are furtherrn r rovided ,yv'ith substantially; centrelly disposed recesses 14 15 respeetifvely and uch-recesses are referably malde conpent'f'idilly with the eircumferefitielly .dis-

pesed lugs "13 pes itioned at the eX-terior edges-0f the membersi0land 11'. Theipu l poses of these recesses and the lugs will be hereinafter more clearly described. 1

Pivetally connected by the. pin 16 to. the up-per and inte ior section ofthe saddle pditionlQ is a bell-crank lever comp sed e f the'memb'ers 17 ancl lS makin an angle with one another. l Pivotztlly conneeted as by pin 19 to theend of the member-" 17 0pposite that to which the saddleipprtion 12 is connected,- is a link, 20 provided at its lower end yvith a lateral extensionfll end having. its base portion steppedmas" "22. for

purpeses to .be hereinafter mentioned.- The member 18 of the bellcrenklever is formed at-itsuppenendinte a handle 23 SO formed thatit effers a substantial and convenient .eree fer: contact with the hand,

1n themseef the device of this inve'iition,

reference beinghed in pertieular te Fig. 4

of theclrztwings' it -will be noted that the members 10 and 1 1 are first pesitioned underneathrthe valve springsfie and itwill be noted that siich Valve-springs are securely .encl effectiyely lt'entered Within the rnembers 10' and: 11' by the lliigs l3 and that the valve -ster'ns25 ere-received by the recesses i k-i5 .en'djthiis permit a positive contaet of the -men1ber's lO-andll and the lugs 13- thereon vwith the lower portions ofthefspr'ings 24.

'Havingpo sitioned the members 10- 1 1 to 'eiige-geendreeive the valve sprin eee, the

link 20 isnew positio ed with its;base;p0rtien conteetipg with the lower interior part of the engine casi g 26, the. link 20 being, positioned zit a point slibstantiellylbetween the valve stem'bearing e'l. Theprqvision ot a lateral extension 21 on th'eL-IinkQO and of its stepped base errier; 22 permits 6f the ep'plic'atien of the device te i aliious formstf ifiterior engine easing eefistilue'tion and permits of the link gaining an eff fective purchase on such 1nter1or casing portions regardless of the exact detailed in The stepperit terior construction thereof. base portion 22 permits also of the adjust ment of the height of the pivotpoint 19 thereby to extend the range of operation the device and when used with a block in} terposed between the casing and the link 20, such adjustment is readily made by using any one of the stops desired. The sad-.

v permits of the upward movement of the valve- spring engaging members 10 and 11 which carry the springs upwardly with them; I

It is to be noted that in initially apply ing this device as hereinbefore described, the link 20 may not always assume direct vertical position and forms with the member 17 a toggle having its knee at the pivot point 19 connecting the member 17 with the link 20. Application of pressure, however. to the handle portion 23 of the lever 18 re sults in transmission of such pressure to the knee of the toggle so formed, whereupon the toggle may be operated to any desired extent and substantially straightened out if desired. Accordingly, during such opera tion the effective leverage of the member 18 is increased as the toggle is straightened out or as the valve spring engaging members 10 and 11 are lifted and hence the effort required to operate against the valve springs decreases in proportion as the valve springs are compressed. or lifted.

The application of this device to a pair of valve springs results in many distinctive advantages. The several levers and linkages are at all times substantially between I the pair of springs and valve'stems and at no time interfere directly with the exposed portion of the valve stems 25 or at no time obstruct the accessibility thereto. Accordingly the pins 28 in the valve stem are readily reached and may be freely withdrawn or replaced. The application of the spring lifting device leaves the lower portions of the valve stems absolutely free and serves in no way to interfere with the freedom of access thereto. i

It will further be noted that in acting against a pair of valve springs-and by posltlomng the operative members of theliftmg device substantially between the pair of springs further advantages; are obtained. Duringthe entire manipulation the valve spring lifting device is maintained in perfeet balance by the reaction ofthe pair of equal and oppositely disposed springs and a maximum stability of the device during its use in thus maintalned throughout.

it will be noted that the several parts of the device of this invention are simple 111 construction and may be readily made of ment, orv repair. It is to be noted also that in this invention therehas been provided a device of the above character in which the several objects have been attained and in which many advantages aside from those already pointed out hereinbefore have been successfully gained. v

As various possible embodiments might be made of the above invention and as various changes might be made in the embodiments above set, forth it is to be understood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense. 7 I

I claim:

1. In a device of the class described, in combination, means for engaging a pair of valve-springs and having at its central part a saddle portion extending upwardly between said springs, a bell crank lever pivotally connected at the saddle portion of said engaging means, and means having a stepped base portion pivoted to, said bell crank lever forming a pedestal therefor, said lever and said last mentioned means forming a to gle. '2. In a: deviceofthe class describe in combination, means for engaginga pair of valve-springs and having atits central part a saddle portion extending upwardly be tween said springs, a bell crank lever having its short arm pivotally connected to said engaging means at the saddle portion thereof,

. said saddle portion being adapted to accommodate therein said short arm of said bell crank lever, and havingits long arm formed into an operating handle, and means pivotally connected to said bell crank lever forming afulcrum therefor.

3. In a device'of the class described, in combinatiomasingle member formed into two oppositespring engagingmeans for receiving a pair of valve-springs and into a saddle portion extending upwardly between said two spring engaging means, each of said engaging means having a plurality of independent lugs for centering said spring thereon, a bell crank lever having its short arm pivotally connected to said engaging means at the saddle portion thereof, said saddle portion being adapted to accommodate therein said short arm of said bellv crank lever, and having its long arm formed into an operating handle, and

means pivotally connected tosaidbell crank lever forming a fulcrum therefor. I V

4. In a device of the class described, in

spring, a lever for moving said engaging means, and a link forming a pedestal ffor said lever, said link having a steppedbase" January, 1920.

WALTER 1 'rLiE,

is combination, means for engaging a valve i

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