US1417370A - Valve lifter - Google Patents

Description

E. E. FARISI.

VALVE LIFTER. APPLICATION FILED FEB. 3, 1920.

arr riee.

VALVE LIFTER.

Application filed February 3, 1920.

To all whom it may concern:

Be it known that I, EDWIN E. Fnnrs, a citizen of the UnitedStates, and a resident of the city of Chattanooga, county of Hamilton, and State of Tennessee, have invented an Improvement in Valve Lifters, of which the following is a specification.

This invention relates to improvements in tools for use in removing valves from internal combustion engines and more particularly to improvements in so-called valve lifters used to compress the usual valve spring prior to the removal of the valve.

It is an object of the invention to provide a tool of the class referred to which is simple in construction, economical of manufacture and eliicient in operation.

A preferred embodiment of the invention has been selected herein for purposes of illustration and description without limiting the invention to the structure shown and described. In the accompanying drawings,

Figure 1 is a side elevation of a preferred embodiment of the invention showing the tool in position for operation.

Figure 2 is a top plan view of the tool shown in Figure 1.

Figure 3 is an end view of the tool shown in Figure 1, and

Figure 4 illustrates the operation of the tool.

Referring to the drawings it will be seen that the tool comprises a U-shaped member 1 having a seat 2 formed at the extremity of the lower projection of the U; the said seat being so formed that it will engage the usual spring holding washer which is a part of the usual construction of valves of the type with which the tool is intended to be used. As shown in the drawings this seat 2 is provided with an opening 3 and an inturned ledge 1 together with a semi-circular back plate 5 having a curvature approximating that of the usual coiled valve spring. The seat 2 may be attached to the lower arm of the U-shaped member or formed integrally therewith as shown in the drawings.

The upper arm of the U-shaped member is shorter than the lower arm and at its end is pivoted a lever 6; the pivot being formed in any suitable manner as by a stud bolt '7. The lever 6 projects beyond the closed end of the U where it is bent downwardly and formed into a handle 8. The other end of the lever 6 is provided with means to Specification of Letters Patent.

Patented May 23, 1922.

Serial No. 356,058.

engage a part of the engine, preferably the head of the valve which is to be removed; the said means being shown as a threaded bolt 9 having its lower end 10 pointed and its upper end formed with a cross-piece 11. This bolt is threaded in the enlarged end 12 of the lever 6.

In suitable position on the U-shaped frame, herein appearing as a projection of the upper arm of the frame, is formed a handle 13 to co-operate with the handle 8. It will appear from Figure 2 that the end 12 of the lever 6 is offset from the vertical plane of the lever so as to bring the point of the screw 10 directly above the center of the seat 2.

In order that the operation of the tool may be clearly understood a fragmentary section through the valve of an internal combustion engine is shown in dotted lines in Figures 1 and 4. A valve 14 having a head 15 and stem 16 is shown mounted in a valve guide 17 and held upon its seat 18 by a valve spring 19 resting upon a valve spring washer 20 which in turn is held in position bv a pin 2l'passing through a hole in the lower end of the valve stem. These parts are shown merely to illustrate a common tyne of valve construction and the tool may of course be used to advantage with other and differently constructed valves.

In removing or replacing valves in internal combustion engines, particularly automobile engines, it is highly desirable to have a simple easily operated tool for compressing the valve spring to enable the mechanic to quickly remove or replace the fastening means such as the pin 21 which holds the valve spring in position. With certain of the tools heretofore provided for this purpose and operating to compress the spring againstsome extraneous part of the engine, the valve stem is easily raised with the valve spring and therefore does not expose the fastening pin 21 so that it may be withdrawn. Furthermore, some tools require the removal of exhaust and inlet manifolds and other connections before they can be placed in position for operation. Some tools heretofore provided require both hands of a mechanic either for placing in position or compressing the spring and are also very apt to slip and let the spring fly back before the fastening means has been removed or replaced as the case may be.

The tool hereinabove described overcomes 6"? all:

the objections above noted. The shoe 2 is so designed that it may be quickly brought into proper position andretained in engagement with the spring Washer by the action of com pressing the spring. It will be seen that the semi-circular rear wall of the seat 5 will bear against the spring washer and that the natural tendency to bear down on the handle 13 will hold this in close engagement With the Washer. The'tool is adapted to engage at its other end the valve head thus holding the valve a ainst its seat durin the comc r pression oi the spring. By turning the bolt 1 9 the tool may be adjusted for different valve stem lengths within certain limits. The handles 8 and 13 are so positioned that they may be grasped by one hand while the other hand is freeto remove or replace the tasten-' ing -pin 21. The relative positions of the handles 8 and 13 are such that when they are gripped to bring them together, down ward pressure on the handle 13will tend to hold the seat 2 in engagement with the valve spring, tendingto force it to the right in Figures 1 and 2, While the upward pressure on thehandle 8 acting'through the fulcrum 7 raisesthe U sha-ped frame and compresses the spring as shown in Figure 4.

1 It will be understood that the invention may be variously embodied and the pre; -'ferred form shown hereln variously modified within the scope of the subjoined claims.

I claim as my invention:

1. A tool for compressing valve springs comprisingtwopivoted members, one of said members being U-shaped and having the pivoted at the other end of the U-shaped member and projecting beyond the bottom of the U to form a handle, and aeo-operating handle on the'U-shapedmember, whereby as said handles are drawntogether the remote end of the lever and theextremity of one side of the U-shaped member are brought together to compress the spring BJA tool for compressing valve springs comprlslng members pivoted together, one

of said members bein-g U shaped and having at one end anoflset portion of'semicircular contour forengaging theedge of a Washer which engages a valve spring, and ledges forming a part of said portion for engaging "the base of said Washer, a second member carrying in one of its ends an a-djustable'pin for en 'a in a valve and means for relab b b J tively moving said -members.

In testimony Whereof,I have signed my name to this specification this 24 day of January, A. D. 1920;

EDWIN E. Films.

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