US1890466A

US1890466A - Valve spring lifter

Info

Publication number: US1890466A
Application number: US542492A
Authority: US
Inventors: Howard E Lemmerman
Original assignee: SIMMONS Manufacturing CO
Current assignee: SIMMONS MANUFACTURING Co
Priority date: 1931-06-06
Filing date: 1931-06-06
Publication date: 1932-12-13
Anticipated expiration: 1949-12-13

Description

Dec. 13, M M N VALVE SPRING LIFTER Filed June 6, 1951 I INVENTOR //owa/-d AT lemme/marl /5 I M *Wr w Patented Dec. 13, 1932 UNITED STATES PATENT OFFICES HOWARD E. LEMMERMAN, on CLEVELAND, OHIO, ASSIGNOR 'rofl'rfin SIMMONS MANU- FAGTURING COMPANY, or CLEVELAND, OHIO, A. CORPORATION oromo vALvE SPRING LIFTER Application filed June 6,

{ tion throughout, the present device being simple and inexpensive to manufacture, easy to handle and to operate, of light weight and of compact form, and of exceptionally strong and sturdy construction.

A specific object of the present invention is the provision of a valve spring lifter in which the valve spring lifting memberis operated by suitable toggle members movable into a locked position beyond dead center.

With the present valve spring lifter, itis therefore possible for a valve spring to be held in raised position without operator effort, both hands of the. operator beingfree for removal from the valve stem of the valve 0 spring supporting pin.

Other specific objects of the present invention are in part obvious and in part will appear more in detail hereinafter.

The invention will be readily .understood from the following description thereof, reference being had to the accompanying drawing in which Fig. 1 is aside elevat on'of the present improved valve spring lifter, with the valve 0 spring lifting member in non-lifting position and with a valve. spring assembly shown in dot-dash lines; Fig. 2 is a similar view with the valve spring lifting member locked in lifting position; and Fig. 3 is a top plan view of the present improved valve spring lifter. I The' valve spring lifter here illustrated is of metal throughout and includes a suitable 0 handle structure comprising a stationary handle part '1 and a pair of upright links 2 of identical construction and having their lower ends riveted at 3 or otherwise rigidly connected to the handle part 1 on opposite 5 sides thereof. Pivotally connected at 5 to the upper ends of the links 2 is an ear 6 of a handle member 7, said ear lying between said links, as clearly indicated in Fig. 3. The stationary handle part 1 and the pivotally mounted handle member 7 are preferably 1931. Serial no. 542,492. g y made of pressed steel, of channel shape in 'cross 'sectlton and opening inwardly.

Rigidly secured to the'front end pending, transversely disposed front end po'rtion 9, In the embodiment/of the invention here shownfsaid hearing 'or supporting part 8 is integral with the stationary handle part 1 and said bearing or supporting part, withv I of the stat onary handle part 1 is therear endof' a bearing or supporting part 8 'havingadew the exception of the depending front end portion 9 thereof, is of chann'el shape in cross section and "opening? inwardly. Pivotally connected at 12 to the links 2, just inadvance of the pivot 5 of the handlefm'ember'7, is the i rear end of a valve spring'lifting member 13 having a horizontally disposed, valve spring engaging jaw 14 atthe front end thereof, said jaw beingprovided withavalve stem receiving slot 15, as is usual in devices of thiskind. This valve .Spring lifting'memof, is of channelshap'e in crosssection and open1ng1nw ardly,'and therear end of sad member lies between the1inks- 2, as clearly shown in Fig. 3. a l

For moving" the' valve spring lifting-member 13 towardandfr'om'the'bearing or sup porting part 8, suitable toggle mechanism is provided. Inthe present embodiment of the invention,"two pairs oftoggle links are used, each paircomprising air-upper link 18 anda lower link 19. The-two upper links 18 each *has its upper end pivotally; connected at 21 to the valve spring lifting member 13 intermediate" the ends thereof, said links lying on opposite sides of said member. Eachof the twol'low'erlinks 19 has its lower end pivoted at 23 to the bearingor supporting part 8 in-.

"ber,vwith the exceptioniof the j aw 14 thereportion of said operating member extends between thetwo upright links 2 of the station- 7 tion, that is, in a position separated ,or spaced I porting part 8.

My handle structure. The rear end of said operating member is pivoted at to an ear 32 depending from the front end of the pivotally mounted handle member 7. Frorn'the foregoing, it will be apparen that operation of the pivotally mounted handle member 7 effects operation of the "operating member'27, the

toggle links

18, 19 and the valve spring lifting member 13. Movement of said handle member 7 toward the station ary handle part 1 effects, through the

toggle links

18, 19 and their operation member 27, 'movementof the valve spring lifting member13 away from the bearing or supporting part 8. Likewise, movement of said handle member 7 awayfrom thest'ationary handle part. 1 effects movement of the valve spring lifting member toward the bearing or sup- As indicated 19 are movable ,into a locked position slightly beyond dead center, so that the valve spring lifting member 13 can be maintained, without operator effort, in valve spring lifting posifrom the bearingor supporting part 8 almost the maximum; amount.

shown in Fig. 2is prevented by engagement of the ear or extension 32 with the plate like supports or'links 2, so that the valve spring when lifted will beheld without liability of returning to its original position until the handle parts are operated to that end. To

- move the toggle links from the locked positionshown in Fig; 2 to the'brokcn position shown in Fig. 1, it is only necessary to raise the pivotally mounted handle member 7, all as will be readily understood. 1

In Figs 1 and 2-is shown in dot-dash lines a valve spring assembly within the usual cavity 35 of an engine block. In these two views,

36 indicates the top wall of said cavityand' 37 indicates the bottom wallthereof. Ex-

,washer 41 which in turn seats upon a cross pin 43 removably secured in a transverse openingin the lower end'of the valve stem 38.

In order to remove the valve-stem 38'from Movement of the togglelinks beyond the self-locking position forms a bearing or support for the device.

Thejaw 14 of the valve spring lifting member 13 is positioned beneath the valve spring 40 with the parts of the present valve spring lifter in the position shown in Fig. 1, that is,

with the toggle links 18, 19in broken condi- '7 tion. The operator then depresses the pivotally mounted handle member 7 which effects a straightening of the

toggle links

18, 19 with consequent raising of the valve spring lifting member 13 and the valve spring 40 above the pivotally mounted handlemember 7 a sufli cient amount to move the

toggle links

18, 19 into a locked position beyond'dead center. as shown in Fig. 2. The valve spring lifting;

upon maintained in lifted position without; operator effort, so that both hands of the opjaw 14 thereof. The operator depresses the member 13 and the valve spring 40 are'therein Fig. 2, the toggle links 18,

erator are free for use the withdrawal from the valve stem 38 of the cross pin 43- the toggle'links 18, 19.and a lowering of the valve spring lifting member 13 and the valvespring 40. The valve stem 38 can then be.

lifted from the engine block.

hat I claim is:

7 Jo After said cross pin has been removed, the i r a A valve spring lifter, comprising a rigid member having bearingand handle portions at its opposite ends and between them a pair of laterally extending plate-like supports each provided with an ear, said supports lying side by side in spaced parallelplanes, a lifting jaw pivoted between said supportsv and. extending opposite said bearing portion, toggle members connecting said bearing por- 'tion and jaw, an operating handle pivoted between said ears and. having 'anextension toward the first named handle ,portion, and a: link-connecting said extension=t0 the toggle members and passing. between said supports, the supports and extension being so formed and arranged and the link being of such length that on closing the handles the toggle. members move beyond dead center and the extension abuts saidsupports to limit such .movement to a self-locking position. 7

In testimony whereof I hereby aflix my a signature.

HOWARD E. LEMMERMAN.

the engine block for valve grinding purposes, 1

necessary to raise the valve spring 40, as in Fig. 2. To lift said spring, the jaw 14 of the valve spring lifting member '13 of the present device is inserted between-the capped washer 41 ,andthe cross pin 43, the valve stem'38 en-