US1469974A - Valve-spring lifting tool - Google Patents

Description

Oct. 9; 1923 M. J. VAGGE VALVE SPRING LIFTING TOOL Filed Jan. 27. 1922 /N VE /V T01? ATTORNEY.

Patented ct. 9, 1923.

einem MARIO J. VAGGE, OF NASHUA, NEW HAMPSHIRE.

VALVE-SPRING LIFTING TOOL.

Application filed January 27, 1922.

To all i/J/tom'z't may concern.'

Be it known that I, MARIO J. VAGGE, a citizen of the United States, residing at Nashua, in the county of Hillsborough and State of New Hampshire, have invented certain new and useful Improvements in Valve-Spring Lifting Tools, of which the following is a specification.

This invention relates to special tools. It is particularly useful for taking out and putting back the valves, especially the cxhaust valves` on certain types of automobile engines.

It is particularly useful on the type of engine such as used on the Reo Model T 6 car, for lifting the spring of the end exhaust valve to remove the cotter pin and thereby remove the valve from its seat. It is also useful in replacing the valve.

In the drawings, Fig. 1 is a side elevation of part of the forward end of a certain type of automobilev explosive engine with the manhole plate removed exposing part of the valve system.

Fig. 2 is a side elevation of the same engine shown in Fig. l with the manhole plate and cylinder head removed and with the fork of my tool in position, the spindle being shown as' passing through the intake valve hole ready for engagement therewith.

Fig. 3 is an enlarged sectional view of my fork looking upward from the line 3 3 f Fig. 2.

Fig. 4 is a view of Fig. 8 looking at the prongs thereof in the direction of the arrow, with the prongs, spring and spring stop shown in section.

Fig. 5 isa vertical sectional view similar to Fig. 2 showing the spindle engaged with the fork, and the spring and spring stop lifted.

Fig. 6A is a sectional detail of a modied form of spindle.

Fig. 7 is a top view of a modified form of turning handle.

In the drawings, A represents a cylinder casting of a common type through which vertically pass the cylinder bores for the cylinders.

As is usual, this casting projects out at 1() and on the particular type of Reo Model T 6 engine with which my tool is particularly useful, this projection curves over and around at 9 in such manner that it is diiiicult to reach in to the spring 40 which encircles the stem 41 of the exhaust valve F.

Serial No. 532,215.

The manhole plate is attached to the cylinder casting A by means of screws which enter holes 31 therein.

This valve F has a head 42 which normally rests in a valve seat 11 and its stem passes throgh a sleeve 18 and hole 14 in cylinder casting A. Its end rests on a take-up operating rod 15 and through the stem 41 is a Cotter pin 43 on which rests a spring stop 49 against which presses compression valve spring 40 whereby the compression spring 40 tends to keep the valve stem 42 in its seat 11. This must be a powerful spring and is therefore hard to remove and' replace with the hands, particularly in view of its position in behind the curved part 9 of over hang 10 of the cylinder casting A.

Spring stop 49 is generally recessed at 44 to receive pin 43 and to prevent it from dropping out. It has a head 48, an annular shoulder 45 -against which spring 40 rests, and a teat 46 which said spring encirclcs, teat 46 ibeing bored at 47 to permit valve stem 41 tol pass through it.

When it is necessary to remove the valve F for grinding the seat, etc., the nuts 2O are removed from bolts 19 and the cylinder head B is lifted off, after which the intake valves, such as 21, are removed, leaving the holes 12 for the stems thereof exposed.

In Figs. 2, 3, 4 and 5, I show my preferred form of valve spring lifting tool H. It comprises a spindle 50 having a shoulder shown as an annular groove 52 and below this a part of a size to pass through the intake valve hole 12. It is threaded at the end 51. At the other end, it has a handle shown at 53 as being integral therewith.

.In my preferred form, I use an annular collar 54 which bears against the shoulder 52 and is revoluble on the spindle. It may conveniently be a collar of the split type and should be of such size that it cannot pass through an intake valve hole 12.

The other part of my tool is the lifting fork 55 having a threaded hole 58 for the threaded end 51 of the spindle, and prongs 56, 56 of a length to reach under spring 40 and' head 48, a distance apart to permit them to straddle valve stem 41. Preferably, their adjoining edges 57, 57 are recessed to fit under head 48 and outside of pin 43.

After the prongs 56 'have been passed under the bottom of spring 40 and stop 49, spindle 50 is pushed down and the threaded end 51 screwed through hole 58 by turning the handle, the result being;` that, as shown in Fig. 5, stop 49 and spring` 40 are lifted Clear of Cotter pin 43 which can readily be withdrawn after which the valve can easily be removed.

As shown in Fig. 6, the spindle 60 above shoulder 62 may be larger than that part ot' the spindle 6l which is below the shoulder, the shoulder being of such size that it can rest on and support the tool on top of easting A and prevent it from passing through hole l2.

Instead of an integral handle 53, the top end 63 of the spindle can be squared so that the Squared hole 65 of a removable handle (34k will pass over it7 as shown in Fig. 7.

The tool II with fixed handle or with a removable handleI such as G4 can remain .in place until the exhaust valve F is ground or repaired, if desired.

I claim:

l. In a valve spring lifting tool, the coinbination of a spindle having a shoulder and threaded at one end below the shoulder,

with a turning handle at its other end, a Collar which bears against the shoulder and is revoluble on the spindle, and a lifting forl having a threaded hole for the threaded end of the spindle and prongs-recessed at their 'adjoining edges.

2. In a valve spring lifting tool, the eornbination of a spindle having a shoulder and threaded at one end below the shoulder, with a turning handle at its other end, a Collar' which bears against the shoulder and is revoluble on the spindle, and a lifting` fork having near one end a threaded hole for the threaded end of the spindle and prongs at the other end. y

3. In a valve spring lifting tool, the Coinbination of a spindle having a shoulder and threaded at one end below the shoulder,

with a turning handle at its other end, and

a lifting' fork havingnear. one end a threaded hole Yfor the threaded end of the spindle and prongs at the other end.

Minero J. vireen

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