US2207888A - Sleeve puller - Google Patents

Description

L. C. JONES SLEEVE FULLER July 16, 1940.

Filed Feb. 2, 1939 V EN TOR.

f rgyw m Patented July 16, 1940 PATENT OFFICE SLEEVE PULLER- Lester C. Jones, Janesville, Wis., assignor of onehalf to Eldrid L. Shebiel, Janesville, Wis.

Application February 2, 1939, Serial No. 254,213 1 Claim. (01. 29-882) The present invention relates to tools designed for use in extracting or removing valve lifters such as the type that isus'ed in the standard Chevrolet motor. Said valve lifters are recipro- 5 cated by cams on a cam shaft which in turn reciprocate push rods which actuate the valves. In time the lifters corrode in their sockets and eventually stick now necessitating the dropping of the drip pan in order to force them out of 10 said sockets. My device is constructed and arranged in such a fashion as to enable the repairman to pull the valve lifters without thenecessity of removing the pan by which operation a great saving of time is made It is ap proximately a twohour job to remove the lifters by the old method; whereas by the use of my tool lifters can be removed from a Chevrolet motor in approximately thirty minutes.

Accordingly the object of the invention is to devise a tool 'of simple construction which is adapted to so function as to remove stuck valve lifters without the necessity of dropping the pan.

In its preferred form, as herein illustrated, the improved-tool comprises a bar having a projecting lug extending from one end thereof for engagement with an oil drain hole in the bottom of the lifter present in the bottom of all Chevrolet lifters, a wedging sleeve for maintaining engagement'of the lug in the oil drain hole during the lifting operation, and a reciprocal hammer on the bar which is adapted to be drivenagainst a stop on the upper end thereof to drive the sleeve from its socket.

With the foregoing general objects in view, the invention will now be described by reference to the accompanying drawing illustrating one form of the construction which I have devised for embodying the proposed improvements, after which those features deemed to be novel will be particularly set forth in the claim.

In the drawing- Fig. 1 illustrates a tool constructed in accordance with the present invention and in operative relation to. a valve lifter which is to be extracted from its socket, the valve lifter being represented in section;

Fig, 2 is a perspective of the hammer which is used to drive the lifter from its socket;

50 Fig. 3 is a side elevation of thebar forming part of my tool;

Fig. 4 is a cross sectional view of the bar along the line A-A of Fig. 3;

Fig. 5 is a cross sectional view of the bar and lifter along the line 3-3 of Fig. 1;

Fig. 6 is a side elevational view of the wedgingsegment; and I Fig. 7 is a top plan view of said wedging segment.

In the drawing the numeral I is used to generally indicate a sectional View of a portion of a cylinder and base of a standard Chevrolet motor which is of the overhead valve type having a rocker arm II and spring supported valve assembly l2. When in assembled position the push rods are adapted to seat in the bottom of the lifters, one of which is shown and designated by the numeral I3. They extend upwardly orifices l4 and engage the opposite end of the rocker arm. Reciprocation of the cam shaft I imparts reciprocal movement to the lifter and push rod thus actuating the valve.

A bar 1'6 of suflicient length and diameter to be cleared through the orifice l4 and to permit the end thereof to be inserted into the lifter is provided. The said bar has a projecting lug l1 adjacent the lower end thereof of such contour and size as to engage an oil drain hole l8 in the bottom of the lifter. The diameter of the bar 16 is approximately half that of the inside diameter of the lifter which permits ready insertion of the engagement end thereof into said lifter. Upon engagement of the lug H in the oil drain hole IS a wedging segment [9 is dropped into the lifter adjacent the bar to firmly hold the lug in engagement with the oil drain hole i8. The segment l9 consists of a metal piece approximately circular in cross section milled with I a right angle groove 20 longitudinally of its length. A pulling ring 2| is affixed to the top thereof as to permit the insertion of a tool to drive the segment from engagement with the pulling bar and lifter when the operation of pulling the lifter is completed. It is to be noted that the pulling bar is flattened on two sides for approximately the lower half of its length. This is to permit a proper and speedy orientation of the wedging segment as respects the bar when said segment is introduced into the lifter after the lug I! on the bar has been placed in engagement with the oil drain hole l8. Were it not for this alining medium the segment might be introduced at an improper angle as respects the bar and lifter and upon attempting to drive it into the lifter said lifter would be spread; whereas with the construction I employ it is impossible to affix the wedging segment in the lifter adjacent the bar without obtaining a perfect fit as respects the lifter bar and wedging segment. A metal hammer 22, circular in cross section and drilled axially at 23, is provided. The said hammer is slipped over the end of the bar I 6 before the metal stop 24 is formed thereon and while not shown in the drawing the bar I6 is of sufficient length so that when it is introduced through the orifice M in the head and placed in engagement with the lifter there is sufficient clearance between the top of the motor block and the stop 24 as to permit about four inch travel of the hammer when it is driven against the stop 24 in removing a stuck lifter.

From the foregoing description and explanation of the different steps of the tools operation, the mode of use of the same will be readily understood. All that is required to extract stuck lifters is to remove the standard plate from the block and disengage the push rod from the rocker arm and the stuck lifter or lifters. The rocker arms are so constructed as to permit turning of them as to place the end out of alinement with orifice M; the lug end of 'the puller tool is introduced through the orifice l4 into the lifter i3. Said tool is twisted around until the lug i1 becomes engaged in the oil drain hole 18. The wedging segment is then placed in engagement with the bar and forced into the lifter. The hammer is then reciprocated against the head 25 and the stuck lifter thus removed.

It is obvious that the tool may be made in varied sizes and the arrangement and contour of the lug and wedge may be altered to suit other adaptations.

vmodifications as may fairly fall within the scope of the appended claim.

What I claim is I A tool of the character described for removing a valve lifter includingva bar having flattened However, the preferred form is specifically designed for the standard Chevrolet surfaces at opposite sides and extending for a portion of its length, a lug at one end of the bar adapted to be engaged in anopening in the valve lifter, a head at the opposite end of the bar, a hammer slidably mounted on the bar and adapted to be forcibly engaged with the head of the bar, and a detachable wedging segment having oppositely disposed arms forming a groove of a width to receive the portion of the bar having the flattened surfaces with the arms;

engaging said flattened surfaces to properly position the w-edging segment relative to the bar and valve lifter and to hold the lug within the opening of the valve lifter. I

LESTER C. JONES.

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