US1447447A - Valve-lifting device - Google Patents

Description

Mar. 6, 1923. M4144? J. E. WAINWRIGHT VALVE LIFTING DEVICE Filed Jan. '7, 1922 2 sheets-sheet 2 Patented Mar..` i923..

tratan Nn este 'OSEPH E. `iiAINRIGTHT, 0F BROOKLYN, NEVI YORK.

VALVE-LIFTING DEVICE.

V Application filed January 7, 1922. Serial No. 527,746.

ject to improve upon the structure disclosed in Letters Patent Number` 1,392,373? issued to me on October 4, 1921. f

A further object of the invention is the production of a simple and enicient device whichwill facilitatel the lifting of' a valve spring in order to permit the removal of the retaining pin and the valve 'spring from engagement with the valve.

Another very important object of the invention is to gener-ally improve upon devices of'this nature by providing a tool which will be extremely simple in construction, eiiicient in operation, capable of being manufactured at a comparatively low cost, and reliable in operation.

1With the above and numerousother objects in view as will appear as the` description progresses, this invention consists of certain/novel features of construction and the combination and arrangement ofparts as will be hereinafter fully described and claimed.v i 1 In the drawing :V-

Figure 1 is a side elevation showing the preferredV modification of the tool in an extended or primary position,` i

i Figure 2 is a side elevation of thetool showing the saine in a contracted position cooperating with the valve spring seat for lifting the saine, v i

Iigure 3 isa fragmentary top plan of the too .y

Figure 4 is anenlarged longitudinal section through the valve engaging endof the tool, on the line 4-4 of Figure 3,

Figure 5 is a longitudinal section through the handle end of the tool,

Figure 6 is a detailedperspectiye of one of the jaws,

Figure 7 is a similar view showing the `j aw inverted,`

Figure 8 is adetailed perspective ofthe handle, i

Figure 9 is-'a detailed section taken substantially on the line 9-9 of Figure 5,

Figure 10 is a longitudinal section through the forward end of the tool showing an auxiliary device attached thereto,

Figure ll is a detailed perspectiveof the auxiliaryl device,

Figure l2 is a longitudinal sectionthrough the forward or tool engaging' end of a modi iied form of the invention, andV i Figure 13 is a detailed perspecitve of a 6 modified form of the jaw. i

By referring to the drawingsit will be seen that 20 indicates the body of the lifter tool generally which is` constructed of two lazy-tong frames suitably spaced from each other and operating in substantially parallel planes.

A pair of jaws 2l are carried at the forward ends of the body 20 by being pivotally attachedy to the ends of the forward link sections `22 while a similar pair of jaws-23 are likewise connected to the adjacent link sections 24. The structure of these jaws 2l and 23 lis shown to advantage in Figures 6 and 7 wherein itwill be seen that the jaws are curved and milled or provided with notches as at 26 and are provided with rearwardly extending fingers 27 which are likewise milled or notched as 'at 28 and the rear end is preferably beveled as at `29. An apertured lug `is provided at 30 for receivingthe rivets 3l which pass through the adjacent link sections 22 or 24. The link sections are held in pivotall enga-gement with each other and in spaced relation with corresponding link sections on the other frame by the rivets or pins 3l which carry the spacing sleeves 32 which also actas antifriction rollersl for the rearwardly extending fingers 27 of the jaws `2l and 23. A spring washer `33. is associated with each pin or rivet 31 so that when the end 34C is attened so that the pin or rivet will remain in place there will not be caused a binding` action betweenthe link sections.

rllhe handle used in conjunction with vthis tool is shown in detail in Figure 8 Aand is indicatedl generally by` the numeral 36. rlhis handle consists of a shank `3'? being apertured at each end so as to receive at one end `a gripv bar 38 and at its other end a pin 39 passing through the adjoining ends of the end link sections 40. A 4bifurcated extension il is provided at this endl of the shank? so Ias `t0 form a slot 42 the end of which is indicated at 43 and withl which the second pin 39 vis adapted toy abut when.

the device isin acontracted position so. as to prevent the linkl sections from abutting each otherl or over-locking and when in an expanded position the pins designated particularly by the numeral 31" willA engage the bifurcations 41 and limit the movement of the link sections.

In Figure 13 I have shown a modification of the jaw wherein the pairs are formed integral with each otherI having a singlefrearwardly extending finger 27 anda single apertured lug 30': The jaws 26 are otherwise similar to the ljaws 26 previously described.

In Figure 12 a modification has. been shown wherein the jaws 21' and 23 are not provided with themilled or notched faces and` likewise the fingers 27 arel not provided lwith the ,tool and as lwill be evident, this attachment is used where there is considerable'spacebetween the twopoints against which the jaws must bear in order to lift the spring.v This auxiliary attachment consists ofa jaw 45 which. is substantially U-shaped in structure and has a shank 46 extending from its lmid portion which is bent in coni formity with the structures of the jaws so as to be readily placed and retained in position. i

l/Vhen it is desired to insert the tool. for

' the purpose of lifting the valve spring seat the jaws 21y and 26 are movedto-the position shown in Figure 1 and the forward ends of the jaws are forced inV between the tappet support and the valve spring seat. i The handle 36 is then pushed inwardly to cause thebody or lazy tong structure 2O to assume thev position shown in Figure 2 thereby raising the valve spring seat to the position shown in Figure 2 and holdingthe same in this position without further `effort on the part of the operator. If it should be found that the space between. the tappet support and the valve spring seat is too large then t-heattachment as shown'in Figures 10 and 11 will be used aspreviously described.

It should be understood that the notches 2.8v uponv the fingers '2i'T will constitute a lockingsurface for holding the jaws against acf cidental` movement.V The spacing sleeves 32 will engage the notches 28 and accomplish this.` locking function.

g, The. projecting fingers 4of the `hand-le caused bythe bifurcated` innerI end thereof will engage `the spacingsleeves` 32 and hold thevlazy-.tong structures in proper extended position and. prevent the same from sagging.

- From the foregoing description, taken in connection with the accompanying drawings, it is thought that the operation and construction of my invention will be readily understoodwithout a more detailed explanation. Although Ihave disclosedgny invention with itsV various modifications with some degree of particularity, it is to` be understood thatl the illustrations of these modifications have been given merely @by way of.

example and I do not consider myself limited tothe construction herein disclosed and described other than as hereinafter claimed.

IIa-ving thus described my invention what I claimas new is zj 1. A valve spring lifter comprising a body consisting of a pair vof lazy-.tong` frames, valve springlifting jaws pivotally mounted upon adjacent ends of said frames, and means carried between said lazy-tong frames for limiting theswinging movementy of' said jaws in one directionV and holding, said jaws in parallel position when pressurefis applied to the valve lifter in the manner and.- for the purpose specified. j

2. A valve spring lifter comprising'a body of a lazy-tong structure, valve spring lifting jaws pivotally mounted upon an endof-L said body, fingers extending from saidjaws, said fingers provided with notched'surfaces, and means carried by said body for limiting the swing of said jaws in one direction and engaging said notches for preventing collapsing of`A said lazy tong structure when under pressure in the manner and for'the; purpose specified.k A

` 3. A valve springflifter.comprising a body of a lazy-tong structure, valve spring lifting jaws pivotally mountedl upon'an end.` of said body, a handley attached to thefother end of said bodyand means, carriedby said'handle for preventing the full collapse of said lazytong structure either in its extended or contractedl positions. f Il. A valve spring lifter comprisingabody consisting of a pair ofpanallel lazy-tong structurel frames, valve spring lifting aws pivotally mounted upon onel end of said body.' anoperating handle carried on? vthe other endof said body; andl means carried between the lazy-tong frames of said. bodyT for limiting'the swing of said jawsin one direction and holding said` jawsfin parallel relation whenuunder pressure. f

5. A valve spring lifter comprising abody consisting of a pair of. lazy-tong structure frames situated in spaced parallelism, valve` spring lifting jaws pivotally` mounted upon one end of said body, a handle pivotally mounted on theothen end ofsaid bodypsaid handleprovided withy an extension disposed between the lazy tong structure frames for limiting the collapsible movement thereof, and means carried by said body for limiting the swing of said jaws in one direction and holding said jaws in parallel relation when under pressure.

6. A valve spring lifter comprising a body of lazy-tong structure, valve spring lifting jaws pivotally mounted upon an end of said body, means carried by said body for limiting the swing of said jaws in one direction and holding said jaws in parallel relation when under pressure, and an attachment adapted to be associated with said jaws so as to be disposed between one jaw and a bearing surface in the manner and for the purpose specified.

7. A valve spring lifter comprising a pair of separable jaws, means for separating the jaws, and a detachable bearing device associated with one jaw and including a substantially U-shaped body portion having an extension formed on one edge adjacent its mid portion and disposed in substantial parallelism with said edge.

8. A valve spring lifter comprising a body consisting of a pair of lazy-tong frames,

valve spring lifting jaws pivotally mounted adjacent an end of the frame and provided with rearwardly extending portions fitting between the lazy-tong frames and adapted to be held in parallel relation by the lazy-tong frames.

9. A valve spring lifter comprising a body consisting of a lazy-tong frame, lifting jaws carried thereby, a handle for actuating the lazy-tong frame and provided with inwardly extending fingers for engaging the frame and preventing the same from sagging.

10. A valve spring lifter comprising a body consistin of a pair of parallel lazytong frames, lifting jaws interposed therebetween, a handle carried near the opposite ends of the frames and interposed therebetween, the handle being provided with inwardly projecting fingers for engaging the frames and preventing 4the same from sagging while in an extended position.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH E. WAINWRIGHT.

Witnesses:

I. L. MOCATHRAN, I-I. F. KLOPFER.

Images