US1392373A - Valve-lifting device - Google Patents

Description

J. E. WA`INWRIGHT.

VALVE LIFTING DEVICE.

APPLlcAloN FILED Nov..15, 1920.

1,392,873, l Patented Oct.l 4, 1921.

2 SHEETS-SHEET l- `l [milganumlunmnmm ulgmm J. E. WAINWRIGHT.

VALVE LIFTIN DEVICE.

APPLICATION FILED Nov', 1s, 1920.

Patented oet. 4, 1921.

2 SHEETS-SHEET 2.

ilnlunlmmmm PATENT OFFICE.

YJ'OSEPHQEL WAINWRIGHT, 0F BROOKLYN, `NEVY'ORK.

VALVE-LIFTIN G DEVICE.

'Specication'of Letters Patent. j *Patented Oct, 4, 1921,

Application filediNovember 15, 1920. Serial No.- 424,128.

To all whom t may concern.'

Be it known that-I, JOSEPH E. WAIN- WRIGHT, a citizen of the United States, residing-at Brooklyn, in the county of Kings and State 'of New York, have invented Vcertain new and useful Improvements in Valve- Lifting Devices, of which the following is a specification.

This invention relates Vto valve spring lifters and has for its object the production of a simple and efficient device which will facilitate the lifting of a valve spring in order to permit the removal of the retaining pin and the valve stem from engagementfwith the valve-spring.

Another object of this invention is the production of a simple and efficient mechanism whereby the operator may conveniently liftthe valve spring seatffrom engagement with the retaining pin'carried by the valve stem with the leastamount of difiiculty.

A still further object ofthisinvention is the production of an efiicie'nt tool which may be universally used upon or lin connection with various forms of motors for the purpose of efiiciently lifting the valve spring seat and permitting the removal of the valveifrom' the motor.

With these and other objects in view, this invention consists of certain novel constructions,combination and arrangement of parts as will bek hereinafter fully described and claimed.

In the drawings Figure 1 fis a side elevation showingthe tool cooperating with van improved form of clamp.4

Fig. 2 is a' side elevation of my improved valve spring seat lifter in an 'expanded or open position showing the mannerA of lifting the valve spring seat. L" i Fig. 3 is a top kplan view of the lifting jaws which are adapted to engage'the'work.

Fig. 4 is a detaill perspective of' one section of one of the jaws. j.

Fig. 5 is .a side elevationy of a modified form of my ltoolappliedndirectly to. my improved' form of clamp. v j Y Fig. 6 is a. section taken on line 6 6 of Fig.' 5. n

Fig.. 7 is a section taken on Vline 7 7 of Fig. 5.

Fig.'8 is a perspective view of my 1mproved clamp.` 4 Y Fig. 9 is a `vertical Asection through the yoke carried by the lower Vend offthe clamp and which. is adapted to extend undervthe valve spring seat.

YVBy referring'to the drawings it willbe seen that 20 designates the body of the valve .spring'seat lifter tool which is of a lazy-tong structure, carrying a handle 21 at its rear end. The bodyf20 carries at its forward end a `pair of upper jaws 22 and a pair of `lower :jaws 23. VThe upper jaws 22 are-pivoted upon the bearing pin 24 carried by the link section 25 andthe lower aws 23 arek pivotally mounted uponV the journal pin 26 carried by the link section 27. AThe upper jaws 22 are milled as indicated. .at 28 upon their upper `faces and .thelower jaws 23 are milled similarly upon .their lower faces, to produce an eflicient: gripping space forengagement with the work. Attention is invited tothe fact'that the lower jaws.23 are formed so as to -it snugly around the tappet, whereas the upper jaws 28 arespaced from each other at aAY greater distance than the jaws 23. lInithis way the jaws l23 will constitute an Vefficient anchor for thetool whilethe same is inoperation and at the same time the widened, jaws 28- will facili- -tatethelifting ofthe valve springiwhile the device is in operation.

Each section ofthejaws 22'and 23 is provided with a rearwardly extending finger 29, each finger having a beveled or inclined face30 near its rearend for facilitating the sliding of the finger v29 under the bearing rollers'31 carried bythe respective ends of the links of the Vlazy-tongA structure. Furthermore when the tool is in-thelposition shown in Fig. 1,'the bearing rollers 3l will constitute an elici'entY clamp for holdingthe jaws in a proper position for insertion under a valve spring seat orin engagement with the valve clamp which may be used in conjunction with the tool.

As shown in Fig. 7 the respective links oi' the Ybody of the tool which comprises a lazy-tong structure are Vconnected by means of journaled pins 32 upon which the bearrio ing rollers 31 are mounted,'these pins being flattened as indicated at 33 for the purpose of retaining the rollers 31 upon the pins 32. The respective links of the body 20 are pivotally connected at their crossing points by means of the pins 34 which also carry suitable rollers similar to the rollers 31 and when the tool is in a position shown in Fig. 1 it will be seen that the jaws 22 and 23 will be firmly clamped in a closed position between the forward pin 34 and the end pin y32.

When it is desired to insert the tool for the purpose of lifting the valve spring seat, the jaws22 and 23 are moved to the positionY shown in Fig. 1 and the forward ends of the jaws are forced in between the tappet support and the valve spring seat or between the respective collars carried by the clamp which will be hereinafter vfully described. The handle 21 is then pushed inwardly tol cause the body or lazy-'tong struc- Ature 20 to assume the positions shown in Fig. 2 of` the drawings, thereby raising the valve spring seat' to the position shown in Fig. 2 of the drawings. i

From the foregoing description it will be Aseen that a very simple and eiiicient structure has Vbeen produced for facilitating the lifting of the valve spring seat which tool will produce a maximum amount of power for lifting the valve spring seat with a minimum amount of effort on the part of the operator.

In Figsj5 and 6 I haveshown ai modified i formv of my invention wherein a suitable clamp 35 is employed at the outer end of which is carried an adjusting head 36, this head 36 being pivotally mounted as at 37 and being adjustably held in a `set position by means yof a thumb screw 38 working through an arc shaped slot 39 formed in the adjusting head 36.V This head36 is provided with an internally threaded collar 40, through which -coll'ar 40 extends the threaded adjusting rod 41. A compression section 42 is held in engagement with the compression rod 41 through the medium of a lazy-tong structure 43, this lazy-tong structure being of similar design and con,- st-ructi'on to that previously described with respect to the tool illustrated in detail in Figs. v1 and 2 of the drawings. The compression section 42 extends through a guiding shank 44, which shank 44 is provided with a plurality of laterally extending web portions 45 having inwardly tapering sides 46 to facilitate the placing of the shank within the upper end ofthe valve aperture or port formed in the motor. A laterally extending pin 45 is carried by the lower Y end of the compression section 42 to prevent the shank 44 from dropping ofl` the lower end of the compression section 42. This compression section 42 -is provided with a pointed lower end 46 lto ,facilitate the engagement of the `same with the upper end of a valve It should be understood that the clamp 35 may be formed of any suitable or desired construction for the purpose of engaging the underV face of` the valve spring seat and may be formed similarly to the structure illustrated in detail in Fig. 8 described inthe following.

Attention is now 'particularly invited to Figs. 8 to 12 inclusive wherein I have shown a modified form of the invention disclosing what is known to the trade as a valve clamp or more particularly known in some oasesas a C clamp. This clamp comprises a substantially U-shaped body 47 having alower arm 48 and an upper or'over hanging armf49. The lower arm 48 carries a substantially U-shaped valve seat lifting yoke y50 shown clearly in Figs. 8V and. 12 and this yoke 50 is provided with a straight upper face 51 and an inclined or curved lower face 52't'o facilitate `the placing of the yoke 50 lunder the valve spring. The over hanging arm 49 carries a head 52 which is pivotally mounted at 53vupon the arm 49. A thumb nut and screw 54y is employed for the purpose of locking the head 52 in engagement with the arm 49 at a desiredvangle, the thumb screw passing through a 'suitable arc shaped slot 55 as shown clearly in Fig. 11'. The head 52 is provided with an internally threaded shank 56, through which internally threaded shank 56 extends the adjusting rod 57 This adjusting rod 57 is provided with a transversely extending pin 58 at its upper end to facilitate the rotation thereof 'and the proper adjustment of the rod 57. A lock nut 59 is threaded upon the rod 57 and is adapted to jam against the u per ledge of the shank' 56v to eiiciently hold't e adjusting rod 57 in a set position'. yA collar 60 is fixedly secured to the rod 57 andvnormally limits the upward movement of. therod 57 through the shank 56. This rod Q57 however may be adjusted downwardly through the shank 56 as will bev obvious. Therrod 57 is` provided with an unthreadedY extension 61 at. itslower end, upon which unthreaded extension 61 is slidably mounted a compression head 62. Ay ycollarf63 is.

secured tothe upper endy of the compressionY head 62 and afset screw 64 is` lao ` in Fig. 2.

clamp as illustrated in'detail in 11, the

tool may be placed in position in the minimum amount of time, this tool being especially adapted for use in connection with what is generally known to the trade as V motors or V blocks and having' ports.

By referring particularly to Figs. 5 and 6 of the drawings it will be seen that a very elicient device has been produced in thev nature of the guiding shank 44. By providing the edges 46 which taper toward'the bottom of the shank, it will be seen that the shank will fit various sizes of ports orv openings and at the same time efficiently support the tool in engagement therewith.

Attention is also called to the fact that the tool which is illustrated in Figs. 1 and 2 is especially adapted for use in conjunction with the auxiliary clamp shown in Fig. 8.

The projecting jaws 22 and 23 of the tool extend between the respective collars 60 and 63 for forcing the compression head downwardly when the tool is moved from a position shown in Fig. l to the position shown tool comprising the lazy-tong construction is especially adapted for use in conjunction with the clamp shown in Fig. 8.

It of course should be understood that certain detail changes in mechanical constructionmay be employed without departing from the spirit of the invention providedl these changes fall within the scope of the appended claims.

The claims are as follows:

l. A valve spring lifting tool comprising a body formed of a lazy-tong structure. valve spring lifting jaws pivotally mounted upon the outer end of said body, and overhanging means carried by the side edges of said body for engaging said jaws and limiting the swinging movement thereof in one direction.

j 2. A valve spring lifter comprising a body formed of a lazy-tong structure, valve spring lifting jaws' pivotally carried upon Said body and provided with rearwardly extending fingers, and roller bearings carried by the side edges of said body and engaging said fingers for limiting the swinging of said jaws in one direction and facilitating the moving of said jaws to an open position.

3. A valve spring lifter comprising a body In other words the structure or' l formed of a lazy-tong structure, valve spring lifting jaws carried -by the outer endv of said body and pivotally mounted thereon, said jaws provided-with rearwardly extending fingers, roller bearings carried by the side edges of said body and engaging said fingers for limitingche swinging movement of said jaws vin one direction, each linger provided with a beveled rear end adapted to engage certain of the rollers for constituting a lock against the opening of the tool by pressure from the forward end of the tool.

4. A' valve spring lifting tool comprising a body, valve spring lifting jaws-carried by Vsaid body andpivotallymounted thereon,

each jaw comprising a pair of sections, said sections being similarly constructed and having outwardly liared outer ends for facilitating the gripping of the work to be acted upon, and means carried by said body for holding said aws in substantially paraly lel relation when in various adjusted positions.

5. A clamp for use in conjunction with valve spring lifting tools comprising a body, meanscarried by one end thereof engaging a valve spring seat,-an adjusting rod carried thereby, and a compression head slidably mounted upon said adjusting rod.

6. A clamp of the class described comprising a body, a spring seat engaging device, an adjustable hinge upon the clamp, means for clamping said head in an adjusted position at a desired angle upon said clamp, a threaded rod adjustably mounted through said head, and a compression head slidably mounted upon said adjusting rod and adapted to be engaged by a tool for forcing the same longitudinally of the unthreaded portion of said rod.

7. A clamp of the class described comprising a body, a valve spring lifting portion, a head hingedly secured to said clamp, means for locking said head at an adjusted angle with respect to said clamp, said head yprovided with an internally threaded portion,

lan adjusting rod extending through said head, a locking nut for locking said krod in an adjusted position, said rod provided with an enlarged collar secured thereto, a slidably mounted compression head mounted for sliding movement upon the lower end of said rod, a set screw for limiting the longitudinal movement of said compression head uponsaid rod, and centering means formed upon the lower end of said compression head.

8. A clamp of the class described comprising a body, a compression head slidably supported upon said body and comprising a supporting shank, a sleeve slidably mounted upon said shank, an abutment collar carried by the upper end of said sleeve, and a tapering point carried by the lower end of said sleeve and clamped in engagement with said sleeve.

9. In combinationfwith a clamp of the portions having inclined side edges tapering toward the bottom thereof for facilitating the placing of said shank in various ksize openings for supporting said compression member, and 'a compression tool associated with said compression member. v

10. In combination with a clamp provided with a compression member adjustably sup- Y ported thereon, of a tool comprising a body pression member for actuating said compres- V sion member. Y

11. A valve spring lifter comprising a body of a lazy tong structure, valve spring lifting jaws pivotally Vmounted upon the Y outer end of said body, and means carried by said body for limitingthe swingof said jaws in one direction and holdingsaid jaws at all times in. parallel relation.V

In testimony whereof I afix my signature.

' JOSEPH E. WAINWRIGHT.

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