US1679970A - Valve-spring lifter and remover - Google Patents

Description

Aug. 7, 1928. 1,679,970

c. E. HIRST VALVE SPRING LIFTER AND REMOVER Filed March 9, 1927 K 3;; 47M W/Z'argggf ttti l atented t ing. 7, 1928.

UNITED STATES CHARLES E. 111381, OF AMES, IOWA.

vVALVE-SJE']EtI1\TGr LIFTER AND HEMOV'ER.

Application filed March 9, 1927. Serial No. 173,926.

lily invention has to do with valve spring litters and removers of the type used in hit ing the springs or poppet valves of automobiles and the like for permitting the convenient reinoval oi the pin, which holds the spring seat in position,

lt is the object of my invention to provide snch valve spring litter and remover of simple and inexpensive construction.

ltlore particularly, it is my object to provide such tool so constructed and having its parts so arranged as to provide for convenient and easy adjustment for useonenpines olf dilterent makes.

l i ith these and other objects in view, my invention consists in the construction, arrangement and combination of the various parts eat my valve spring litter and remover, whereby the objects conten'iplated maybe at- 'taineehas hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

l i iire l is a side elevation 01'" my valve spring litter and remover assembled in connection with parts of an engine, shown in vertical section.

lPiginre is a top or plan view of" a portion of the engine with my improved tool installed thereon, shown in section, and taken on the line E2-2 of Figure 1.

higure is a detail, sectional View taken on the line 3-3 of Figure 1.

ll ignre 4t is a detail, sectional View at the end ot the valve stem, spring, spring seat and pin; and

Figure 5 is an enlarged, detail view, partly in section, of a portion of the tool,

ltn the accompanying drawings, I have need the reference nun'ieral to indicate generally an engine block having the cylinder 1% with the piston 14: therein, and the valve seat 16 below the opening 18 in the engine head. The opening 18 may be norinally closed by a plug in any suitable way.

it valve 20 coacts with the seat 16 andhas a stem 22 projecting downwardly through a sleeve .24; toward. the tappet26.

Un the lower end of the sleeve 24 and on the lower projecting end of the stem 22is a valve springQSw tllidably mounted on the stem '22 at its lower end is a downwardly opening cupshaped spring seat member having at its lower edge an annular flange 32. A pin is extended through the stem 22 within the spring seat 30 as shown in Figure l 1t is well known that the removal ol the pin 34: tor the purpose of taking oil. the sprlng seat and spring and thus making the valve removable a rather awlmvard and ditlicnlt operation. lt tor the purpose of suitably compressing the spring 28 and sliding the spring seat upwardly on the stem 22 that I have provided my present tool.

The tool comprises a member adapted to rest on the top oi the valve 20 tor holding it down and another member adapted to be lifted for raising and compressing the spring.

I shall describe my tool in its position assembled for use,

It comprises an. upright bar 36 having at its lower end a. right-angled extensiontitl. Fixed to the extension -5 on the opposite sides thereofare spring arms st-.0, which project beyond the free end of the member and tend normally by their resiliency to spring away from the member Elli at the ex; treine end thereof,

At their outer ends, the spring arinseltl are formed with portions lEE extending away from each other and then away 1 in the member 38 in substantially parallel position.

At the lower edges of the portions slit are inwardly extending flanges tal, it. bolt l6 is extended through the spring;- arms-lO near the free ends oi? the member Elli and receives a, wing nut 1-8. The spread oi the members 42 and the flanges a lmay be regulated by adjusting the wing nut 48 on the screw ettl for accolnlnodating the tool to spring seats of different diantieters, as tor instance on dil? ferent engines,

Slidably mounted on the upright bar 36 of the tool are two yoltes 5t] and connected by an upright nieniber til. Projecting from the upper yoke 50 a horizontal niernber 56 having at its free end the do\vn jvard- 1y extending substantially pointed member 58 arranged above the flanges l and about midway between them.

In the upper part of the bar 36 are provided a plurality of notches (30 with sentiewhat- IIHII'OWGLl threats. The metal around the deeper parts of the notches 60 is countersunk as indicated. at (32 in Figure I provide a handle 64al'iaving at one end a bifurcated L-shaped extension 66. The errtreine ends of the bifurcated L-shaped extension 6'6 have extended through them a screw bolt 68 between the head of which and one of the arms 66 is a coil spring 70. On the free end of the screw bolt 68 is a wing nut 72.

Around the holes 74 in the arms of the L- shaped member 66 on the inner faces thereof are beveled annular shoulders 76 adapted to fit into the countersinks 62. The spring tends to press these shoulders 76 into the countersinks 62.

A rivet 78 is extended through the arms of the L-shaped member 66 near the handle 64 to prevent their spreading. The outer ends of the arms of the L-shaped member 66 are somewhat resilient. A pair of links are pivoted to the respective arms of the -L-shaped member 66 near the angles thereof and to'the yoke 50 as shown in Figures 1 and 2.

. I will now explain the practical use of my improved valve tool. The tool is first ad- .justed forthe engine on which it is to be used. In doing this, the wing nut 48 is adjusted to regulate the spread of the members 42according to the size of the spring 28 and spring seat 30. The screw bolt 68 is slipped into the proper slot 60.

It will be understood that the'nut 72 is always adjusted so as to yieldingly press the shoulders 7 6 into the countersink 62 and to hold the handle in place wherever the screw bolt 68 may beinserted into the proper slot, and yet to permit the bolt 68 to be pushed out of the slot without further adjustment of the nut 72. When the bolt 68 has been adjusted to the proper height on the bar 36 by inserting it into the proper slots 60, the handle 64 is raised for thus spreading the members 58 and 42 apart. The member 58 is then inserted through the hole 18 to position, where it rests on the valve 20. The members 42 are then swung to position where the flanges 44 rest just below the spring seat 30, as shown for instance in Figures 1 and 4. v 4

The handle 64 is then swung from its raised position shown in full lines in Figure 1 downwardly to its dotted line position shown in the same figure. This movement would tend to swing the links 80 down wardly but. for the fact that the downward movement of the member 58 is limited by its engagement with the valve. I

The effect therefore of the downward swinging of the handle 64 is to raise the bar 36, the members 38, the members 42 and the flanges 44 to the dotted line position shown in Figure 1, where the spring 28 will be compressed and the spring seat 30 raised to clear the pin 34. r

The space between the flanges 44 is sufficient to clear the pin 34.

The handle 64 and its L-shaped member 66 are of such shape that when the handle is moved from its raised position to its low- The rivet 78 then serves another function of engaging the bar 36 and limiting the swinging movement of the handle 64 toward the bar 36 for thus avoiding the pinching of thefingers of the operator.

When the tool has thus been operated, the pin 34 will be readily accessible and can be removed, whereupon when the operation of the tool is reversed and the tool removed, the spring seat and spring will drop oil the valve stem, and the valve can be ground or removed.

The manner of operating the tool to replace the pin 34 will be obvious.

There are a number of advantages in a tool of this kind.

Because of the shape of the member 56 with relation to the member 58, the member 56 clears the projecting parts of the engine and the member 58 can be inserted through the hole 18 and the tool thus used on certain kinds of engines in such manner as to hold the valve in place during the removal of the pin 34.

The construction of the slots 50 with the countersinks 62 together with the shoulders 76 and the bolt 68 with its spring 70 causes the shoulders 76 to be normally yieldingly pressed into the eountersinks. The corresponding beveled faces of the Countersinks and the shoulders, however, make it possible to shove the bolt out of any slot 60 and to insert it into another slot 60 without any readjustment of the wing nut 72. This is an important feature of the present device, because it permits the bolt 68 to be snapped into any slot for adjusting the tool to the engine on which work is to be done, and prevents the bolt 68 from accidentally slipping out of the slot in which it is received.

The constructon of the handle and its L- shaped member 66 is such that when the spring 28 is compressed, the tool is locked, and the tendency of the spring 28 to spread the member 58 and the members 42 tends to more securely lock the handle member in position.

The use of the rivet 7 8 as a stop adds to the convenience and comfort in using the tool, since it prevents pinching the fingers of the operator.

The use of the spring arms 40 and the adjusting bolt 46 and nut 48 makes it easy to adjust the spread of the members 42 for different engines.

Changes may be made in the materials used and in the eonstructoin and arrangement of the various parts of my tool with out departing from the real spirit and pur pose of my invention, and it is my'intention to cover by my claims any modified forms Jun ill

oi structure or use of mechanical equivalents, which may be reasonably included within the scope of such claims.

l claim as my invention:

1. lln a valve spring litter and remover, a bar, a valve engaging member slidably mounted on the bar, a spring seat engaging device supported on said bar, a handle, links connecting the handle and the valve engaging member, said bar having a plurality of spaced slots with reduced necks and with counter-sinks around their deeper portions, said handle having a bifurcated end receiving the bar, a screw bolt extended through the arms or said bifurcated end and adapted to be respectively received within the respective slots, a spring between the head of said bolt and one of the arms of the bifurcated end, and a nut on the other end of the screw bolt, the arms oi said bifurcated end having annular, beveled shoulders adapted to be received in said countersinks.

2. ln a tool of the class described, a bar, a valve engaging member slidably mounted thereon, a spring seat engaging member sup ported on the bar, a handle with an Lshaped extension, said bar having a plurality of notches, said extension having a bolt adapted to be selectively received in said notches and a link con ected with said L-shaped extension and said valve engaging member, the parts being so arranged that when the handle is swung to position for moving the valve engaging member and the spring seat en gaging member toward each other the point oi? pivot connection between the link and the iii-shaped extension swings past center.

lin a tool of the class described, abar having a plurality oi notches, a valve engaging member slidably mounted on said bar and projecting substantially at right angles therefrom and having at its free end a right ai'igled extension, there being an extension on said bar terminating in a spring seat engaging member substantially in line with said lirsbdesciribed cxtension,and means for sliding said bar and said valve engaging member with relation to each other.

4-,. in a tool of the class described, a bar having a phirality of notches, a valve ongaging member slidably mounted on said bar and projecting substantially at right angles therefrom and having at its free end a right-angled extension, there being an extension on said bar terminating in a spring seat engaging member substantially in line with said first-described extension, and means for sliding said bar and said valve engaging member with relation to each other, comprising a handle with a bifurcated L- shaped extension, having its arms connected by a screw bolt, links pivoted to said L shaped extension and to said valve engaging member, and a bolt extending through the arms of said bifurcated L-shaped extension and adapted to be selectively received in said notches.

5. In a tool of the class described, a bar having a plurality of notches, a valve engaging member slidably mounted on said bar and projecting substantially at right angles therefrom and having at its free end a right-angled extension, there being an extension, on said bar terminating in a spring seat engaging member substantially in line with said first-described extension, and means for sliding said bar and said valve on gaging member with relation to each other, comprising a handle with a bifurcated L- shaped extension, having its arms connected by a screw bolt, links pivoted to said L- shaped extension and to said valve engaging member, and a bolt extending through the arms oi: said bifurcated L-shaped extension and adapted to be selectively received in said notches, said notches having reduced necks and countersinks around their deeper portions, the arms of the said L-shaped extension having beveled angular shoulders for reception into the countersink, and means for yieldingly tending to press the shoulders into the countersink.

6. In a tool of the class described, a bar, a valve engaging member slidably mounted thereon, there being an extension on said bar, spreadable spring seat engaging members supported on said extension, and means for operating said tool by moving the valve engaging member relative to the bar, said means comprising a series of notches in the bar, a handle pivoted selectively in said notches and link connections between the valve engaging member and the handle.

Des Moines, Iowa, February 25, 1927,

CHARLES E. HIRST.

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