US1907609A - Valve lifting tool - Google Patents

Description

May 9, 1933. J. SUNNEN 1,907,609

VALVE LIFTING TOOL Filed May 2; 1932 7 nsfpf/ SUA/NEN.

Patented May 9, 1932?` UNITED STATES JOSEPH SUNNEN, F KIRKWOOD, MISSOURI VALVE LIFTIN'G Toor.

Application filed May 2, 1932. Serial No. 608,723.

My invention has relation to improvements in valve lifting tools and it consists in the novelfeatures of construction more fully set forth in the specification and pointed out in the claims.

The present invention is an improvement over that shown in my Patent No. 1,792,451, dated February l0, 1931, and is of the same general type in that the tool comprises a base member having a handle lever and a valve part lifting lever pivotally connected to said base lever. However, the present invention has a wider scope of usefulness than that shown in the patent referred to, in that it ,is adjustable to perform operations on valves of various makes of engines and otherwise embodies a flexibility not possessed by that of the valve lifter of the aforesaid patent.

Specifically, the principal object of the invention is to provide a valve lifting tool having a wide scope of usefulness, although being of comparatively small size so Vthat 1t may be easily handled. A further object of the invention is to embody lateral adjustabil ity in the spring seats at the end of the lifting lever for the accommodation of various sizes of springs, and to provide an adjustable connection between the relatively movable members of the tool so that the spacing of said members may be varied according to the requirements of the particular operation. It is also an object of the invention to embody ilexibility in the base member so that the operation of the tool will not be impaired if the terminal supporting elements of the base member have uneven support. These objects, as well as other advantages that are inherent in the invention will be betterv understood from a detailed description of the invention in connection with the accompanying drawing, in which:

Figure l is a side elevation of my improved valve lifter shown applied to and about to raise a valve spring for the subsequent removal thereof; Fig. 2 is a top plan of my improved valve lifter; Fig. 3 is a side elevation 'similar to Fig. l, except that the valve lifter has been actuated so as to raise the valve Aspring (shown dotted); Fig. 4 is a front elevation showing the base supports and the :the tool.

different planes;

lever of the'toolyFig. 7 is a similar section showing the base supports twisted out of line with each other to correspondV with their positions in Fig. 5; vand Fig. 8 is a face view of what may be` termed a ball-seat whereby the link is iexibly connected to the base member. v

Referring to the drawing, l represents a base member comprising channel lside bars 2, 2 bent upwardly and tapering toward their forward extremities 3, 3 which comprise the supports or props of the tool when performuing valveV lifting operations. o The inner flanges 2', 2 of channel bars 2, 2 terminate intermediate the ends thereof,.and theouter flanges 2, 2 are connected near the endsl to form a handle 4. A short distance inwardly from the ends of the props 3, 3` the channel bars2, 2 are traversed by a screw V5 anda threaded sleeve 5 having a knurled head t on its outer end. By screwing the screw and sleeve together the side bars may be drawn inwardly to reduce the space between the props 3, 3 when necessary to adaptthern to the construction of particular engines. Thus the base member lV is constructed so as to possess great rigidity ina vertical plane while the elements are exiblelaterally. with respect to each other in order to eect ladjustment of the props, as just explained. About one? third the distance back from the props 3, 3 a connecting link 6 is pivotally mounted between the channel bars 2, 2, said link having a connectionat its upper end with a handle lever'7, which vterminates in a handle 8 for cooperating with handle 4L, in the operation of The handle lever 7 is A.U-shaped in cross section to impart rigidity thereto, the sides of the U being spread apart to form the handle 8. The link 6 is so constructedA that the space between base member ly and handle lever 7 may be varied, said link at the connection between'the link 6 same time being flexibly connected to the side bars 2, 2 of the base member 1. A detailed description of the construction of the link 6 will explain these features.

The link comprises a stud 9 having its upper end pivotally connected to handle lever 7 by means of a 'pin 10 and having its low-er end threaded into a cylindrical nut 11 having an annular channel 12 formed on it, the upper shoulder 13 ofsaid channel being rounded so as to form a ball and socket connection with the correspondingly rounded opening 14 in a seat connector 15 in the form of a disk. Said disk has oppositely disposed pins 16, 16 projecting from its periphery and into openings' 17, 17 in the channel bars 2, 2 between which the disk may rock. The lower end of nut 11 is provided with a knurled head 18 so that the nut may be easily rotated for the purpose of A2'() propelling vthe stud 9 or drawing the same inwardly, depending on whether the lbase member 1 and handle lever 7 are to be spaced more or less.

and channel bars 2, 2 will be explained hereinafter.

A lifting lever 19 is pivotally connected to base member 1 about midway between the link 6 and the end of handle 4 by means ofV a stud 20 which traverses the channel bars 2,

2 thereof, said stud having a nut 21 passed jover its outer threaded end. The lifting lever 19 comprises a pair of lever bars 22, 22, each Vof which is formed of two spring ele- -ments a' and Y), the former being bent outwardly at its free extremity and having a horizontal'fiange a. The oppositely Vdisposed extremities 23,23 of velements a, a together form a Vseat for valve spring S (as shown in Figs. 1 to 5 inclusive). The inner spring elements b, b of the bars 22, 22 terminate short of the extremities 23, 23 of the outer elements (L, a, which elements are connected by means kof a stud 2a and threaded sleeve 25 for the purpose of adjusting the spacing of the bar extremities 23, 23 to accommodate them to different sizes of springs. The sleeve 25 has a knurled head 26 on its outer end so that it fulcrum the lifting may be more easily turned. The upwardly bent extremit, 7 of handle lever 7 is pivotally connected y means of a pin 27 between the sides 22, 22 of the lifting lever 19, and as the handle lever 7 is rocked upon pin 1Q as a lever 19 will be raised by the forwardend 7 of the handle lever, as is clearly apparent on the examination of Figs. 1 and 3. A clip 28 is slidably mounted on the lever 19 and serves as an abutment for the handle lever 7 when the handles 4L and 8 are forced together to spread apart the actuat ng end comprising supports 3, 3 and seats 23, 23

of the tool (as shown in Fig. '3).

The operation of my improved valve lifting tool is as follows;

The operator inserts the forked extremity 3, 3, comprising the supporting elements, into The advantage of the swivelv the space housing the valve spring S so as toL straddle the cam-follower, or some other part of the valve structure, below the valve stem. W ith the base member 1 thus supported the spring seat, comprising spaced extremities 23, 23 of lifting lever 19, is forced between adjacent coils of the spring S so that opposite coils will rest upon flanges a', a. Obviously, the spacing of the spring extremities 23, 23 has been previously adjusted by turning the sleeve 25 so as to best accommodate the spring S. N ith the operative end of the tool engaged, the operator then presses the handles i and 8 together so as to rock the handle lever 7 downwardly and thus raising the lifting lever 22 at its forward lend to lift the spring S by compressing ythe same until it is clear of the split locks n, n, as shown in Fig. V3. The valve lifter may be locked in -this position with the spring S elevated by sliding the clip 23 rearwardly until it impinges on the handle lever 7 (Fig. 3). The handles may now be released by the operator as the clip 23 prevents them from spreading under the pressure im osed on the forward end of the` l l .f S. The split locks tool by 'the valve spring n, a, as well as the spring seat n', may now be easily removed so as to release the spring S. It sometimes happens in applying the tool to ertain valve structures that the supporting Y as described Iabove, so 'that the connecting' element 15 between said link and bars 2, 2 is free to oscillate or rock relative to the link 6. This is accomplished by means of the ballseat formed by the shoulder 13 and opening 111-., as above described and shown in Fig. 7.

which causes the bars 2, 2 to be Y The swivel connection between the link 6 Y and base member side bars 2, 2 allows for relative movement of the base element in a vertical plane without throwing the spring S out of line and, as a result thereof, cramping the; l

spring retainer on the valve stem and binding the valve parts so that they would be ditcult to remove.

rl`he spring construction of the lifting lever side bars 22, 22 introduces the necessary iiex\`l4 ibility into these side bars to permit adjustment of the spacing of the springseats 23, 23 without sacrificing strength. The outer and inner elements a and bof each bar 22 are spot welded together near their free ends (that is,`vr

just behind the spring seats 23, 23) and are similar to spring leaves in their action in that they are capable of a certain relative movement as they areflexed in action. VIt is obvious that, in order to permit this spring action the stud 20 on which the lever bars 22, 22 are pivoted must be fitted with clearance into the perforated ends 0f the elements a and Z) which comprise each of said bars 22.

Having described my invention, I claim:

l. A valve lifter comprising a base member terminating at one end in a handle and at the opposite end in a suitable support, a handle lever having connection with said base member, a lifting lever pivotally connected at one end to the base member and having operative engagement with the handle lever, said lifting lever comprising a pair of spaced laminated elements terminating in valve part engaging seats the laminations of each element being securely fixed together for rigidity adjacent to said seats, and means for varying the spacing of said seats.

2. A valve lifter comprising a base member terminating at one end in a handle and at the opposite end in a pair of spaced supports, means for adjusting the spacing of said supports, a handle lever having connection with said base member, a lifting lever pivotally connected at one end to the base member and having operative engagement with the handle lever, said lifting lever comprising a pair of spaced laminated elements terminating in valve part engaging seats the laminations of each element being joined adjacent to the seats to integrate each element adjacent to said seats, and means for con tracting the laminated elements to vary the spacing of said seats.

3. A valve lifter having a base member comprising apair of spaced channel bars, a lifting lever pivotally connected at one end between said channel bars and having an adjustable spring seat formed on the opposite end thereof, a handle lever connected to the lifting lever and a link connection between said handle lever and base member channel bars, said link connection being flexible to permit said channel bars to move vertically out of line without imposing strain on said link connection.

4. A valve lifter having a base member comprising a pair of spaced bars, a lifting lever pivotally connected at one end between said bars and having a seat formed on the opposite end thereof, a handle lever connected to the lifting lever, and said handle lever having a flexible pivot connection with the bars of the base member to permit said bars to move vertically out of line without imposing strain on the pivot.

5. A valve lifter comprising cooperating valve lifting members pivotally connected, one of said members comprising spaced laminated elements and having a seat formed on its free end the laminations of each element being joined adjacent to said seat to integrate such part of each element for rigidity, suitable handles for operating the lifting members, and means for varying the spacing of said elements adjacent to said seats.

6. A valve lifter comprising a base member, a lifting member pivotally connected therewith, each of saidV members comprising spaced side bars, and a suitable handle member having a flexible pivot connection with the bars of the base member to permit said bars to move vertically out of line Without imposing strain on the pivot.

7. A valve lifter comprising a `base member terminating at one end` in a handle and at the opposite end in a pair of spaced supports, a handle lever having connection with said base member, a lifting lever pivotally connected at one end to the base member and having operative engagement with the handle lever, said lifting lever comprising a pair of spaced laminated elements terminating in valve part engaging seats the laminations of each element being joined to form an integral portion adjacent to the seats, and means for varying the spacing of saidV seats.

8. A valve lifter comprising cooperating valve lifting members pivotally connected,

one of said members comprising spaced laminated elements, each of which has a seat portion on its free end, said laminations being joined to provide each element with an integral portion adjacent to the seat portions.

In testimony whereof I hereunto aliix my signature.

JOSEPH SUNN EN les

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