US1593850A - Valve-spring lifter - Google Patents

Description

H. G. RICE ET AL VALVE SPRING LIFTER Filed Dec. 113. 1923 Mil??? JYafaZd 6/2266 wmw'w/aywdwf Q1 WM Patented July 27, 1926.

UNITED STATES PATENT OFFICE.

HAROLD Gr. RICE AND WOLFORSDORF, OF CHICAGO, ILLINOIS, ASSIGNORS TO INDESTRO MFG. 00., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

VALVE-SPRING LIFTER.

Application filed December 13, 1923.

This invention relates to valve-spring lifters for internal combustion engines, but more particularly to such as are used in automobiles, and has for its primary object to provide a simple, economical and efficientdevice of this class.

The many other objects and advantages of our invention will be better understood by reference to the following specification when considered in connection with the accompanying drawing illustrating a selected embodiment thereof in which Fig. l is a side elevation of a spring lifter embodying the principles of our invention.

Fig. 2 is a horizontal section on the line 22 of Fig. 1.

Fig. 3 is the same as Fig. 1, illustrating the device in readiness to lift a spring, and

Fig. a is the same as Fig. 1, illustrating the spring lifted and held in raised position by the device.

Referring to the drawing, the lifter comprises an operating lever 5, a lifter plate 6 trunnioned in the fork-shaped forward end 7 7 of the lever, and spaced links 8 and 9 pivotally connected to the lever 10 and 11 respectively.-

The lever in the present embodiment is formed of a strip of metal folded upon itself as indicated in Fig. 2, the outer or rear portion 12 being spread to form a handle. The pins or rivets acting as pivots at and .11 pass through both side members 13 and 14 of the lever and secure these members together. The respective links 8 and 9 are mounted on such pivots between the side members.

The lifter plate 6 is provided on its opposite side edges with upturned lugs or flanges 15 having on their upper edges outwardly bent projections 16 forming the trunnions for the plate. These trunnions enter perforations or bearings 17 in the end portions 7 of the correspondlng side members of the lever. An upturned lug 18 is formed on the rear edge of the plate. The forward portion of the plate is cut away at 19 to ad mit the valve stem 20 of the engine, as will be explained presently. The forward edges of the prongs 21 are preferably beveled as at 22 to facilitate the insertion of the plate beneath the valve spring 23.

The links 8 and 9 are each provided with Serial No. 630,312.

a loop or eye at its upper extremity as 24 and 25 respectively. The link 9 is preferably slightly longer than the link 8.

The mode of operation ofour lifter is illustrated in Figs. 3 and 4 of the drawings in connection with an automobile engine of the Ford type. The usual exhaust manifold has been removed, leaving the attaching bolts 26 projecting laterally from the cylinders. The handle portion of the lifter is grasped in the hand with the lever 5 and plate 6 in substantially the relative position of Fig. 1. The plate 6 is then slid scoop fashion under the lower end of the valve spring 23, the vvalve stem entering the cut-away portion 21 of this plate. The spring and plate 6 are relatively positioned by the upturned flanges or lugs 15 and 18 at the time of insertion of the plate and during the actual lifting of the spring. As the plate is being slid beneath the valve spring in this manner, the tension link 8 is brought into position to cause the loop or eye 24: to slide over the bolt 26 into substantially the position of Fig. 3. This link now forms the fulcrum for the lever 5 and the device is ready for the actual lifting operation. The outer or handle portion of the lever is now depressed to substantially the position 'indlcated in Fig. 4, causing the plate 6 to be proportionally raised and the valve spring to be compressed. The lever is secured in this position by swinging the link 9 inwardly from some such position as that indicated in dot in Fig.5 sufliciently to cause the outer end of the bolt 26 to enter the loop or eye 25, as illustrated in solid lines in this figure. The two point connection of the lever 5 with the bolt 26 looks the lever in depressed position and retains the valve spring compressed. To release the valve spring and remove the lifter, the lever is depressed sufficiently to relieve the pressure on the link 9 and permit this compression link to be disengaged from the belt. As soon as the link 9 is disengaged, the handle portion of the lever is permitted to swing under the action of the valve spring to its upper or initial position and the device may then be withdrawn from the engine.

It will be readily evident that our device is exceedingly simple and economical in con- Ill) struction, and may be quickly and easily operated by any one without the exercise of skill.

\Ve are aware that the form and arrangement of the various parts may be varied without departing from the spirit of our invention and we reserve the right to make all such as 'l'arily fall within the scope oi? the following claims.

WVe claim as our invention 1. In a device of the class described, the combination of a. lever comprising a strip of metal folded substantially upon itself and having the opposite ends bent outwardly to form a fork, a litter plate trunnioned in said fork, a link pivotally connected at its inner end to said lever at an interval irony said fork and provided at its outer end with an eye to engage an engine part. said link forming a fulcrum for said lever, a second link pivotally connected to said lever at a greater distance from said r'ork than the first mentioned link and being likewise pro vided at its outer end with an eye to engage an engine part, said second link being adapted to be brought into said engagement upon the completion of the valve lifting operation to lock said lever in position to retain the valve in lifted position.

2. In a device of the class described, a lever having a lifting plate pivotally mounted at one end thereof. a pair of links each pivotally connected at its lower end to said lever at spaced points intermediate the ends of the lever, both of said links extending upwardly from the lever, the link nearest the lifter plate being provided with means at its free end for suspending the device from a part of an engine and the other link being provided at its free end with a seat for engaging a part of said engine after the spring is compressed to hold the spring so compressed.

3. In a device of the class described, a lever having a litter plate pivotally mounted thereon at its inner end, a link pivotally connected at one end to said lever at an interval from said lifter plate and provided at its other end with means for engaging an axially horizontal stud projecting from the engine on which the device is used, whereby the device is suspended therefrom, a second link pivotally connected at one end to said lever at a greater interval from the litter plate than the first mentioned link, and provided at its free end with a seat adapted to engage said stud when the outer end of the lever is depressed to compress a spring, whereby the last mentioned link is adapted to hold the outer end of the lever in depressed position to hold the spring under compression.

HAROLD G. RICE. HANS WOLFORSDORF.

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