US1397768A - Valve remover and lifter for internal-combustion engines, &c. - Google Patents

Description

L. J. McKONE.

VALVE REMOVER AND LIFTER FOR INTERNAL COMBUSTION ENGINES, &c. APPLICATION FILED JULY 30. .1920.

1,397,768, Patented Nov. 22, 1921.

WITNESS IN V EN TOR.

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UNITED STATES PATENT oFricE.

LEO JAMES MGKONE, OF KANSAS GITY, MISSOURI, ASSIGNOR TO OF KANSAS CITY, MISSOURI.

WILLIAM CASEY,

Specification of Letters Yatent.

Patented Nov. 22, 1921.

Application filed July 30, 1920. Serial No. 400,074.

To all whom it may concern:

Be. it known that I, Leo J. MCKONE, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented new and useful Improvements in Valve Removers and Lifters for Internal-Combustion 'Engines, &c., of which the following is a full, clear, and exact description.

My invention relates to means for manipulating the valves of engines that have axially extending stems for guiding the reciprocation of the same, and more particularly for the purpose of lifting and extracting the valves of internal combustion engines of the type employed in automobiles and automobile trucks.

The object of my invention is to lift or extract a valve in a direction parallel to or in alinement with the axis of the stem thereof, and todo this in such manner as to avoid the bending of the valve-stem, either for the purpose of quickly and easily removing or lifting the valve for grinding, or for lifting and holding the spring to facilitate the removal of pins or keys used in connection with the stem; and a further object is to permit the operator to have the free use of his hands while the valve is in its lifted position whenever desired. These and other objects, which will suggest themselves to a gas engine mechanic, as occasion may require, I accomplish by the means hereinafter described and as particularly pointed out in the claims.

In the drawings:

Figure l is a perspective view of my invention showing it applied to the valve of an internal combustion engine.

Fig. 2 is a plan or top edge view of the same.

Fig. 3 is an end view of the same.

Fig. 4: is a detail view showing a transverse section of the pivotal connection of the links.

In the drawings A represents the stem of the valve of a well known type of automobile gasolene engine; B a coiled spring sursounding said stem and having its lower end pressing downward against a washer or disk C, which is ordinarily retained in a given position on said stem by a key, and b and 0 represent nuts screwed onto the lower screwthreaded end of said stem.

My invention comprises two parallel bars or handles 5 and 6, one of which is screwthreaded and the other of which is smooth and preferably cylindrical throughout its length. Both of these bars are provided at their corresponding ends with spreaders or heads, 7 and 8, respectively, into the enlarged ends of which said bars are gained and secured in any suitable manner. The free ends of these spreaders are bifurcated or forked and the opposing surfaces thereof are, preferably, parallel, so that when brought together they will lie flat against each other. I prefer to curve the upper surface of the upper spreader and thelower surface of the lower spreader so as to make them thinner, so that when said jaws are brought together the combined thickness thereof, will enable them to be inserted between disk C and the uppermost nut a on the stem of the. valve.

Each of the bars are provided with longitudinally slidable blocks, 10 and 11, respectively, that are preferably, of the same width as the adjacent ends of the spreaders, which latter and said bars are connected on each side of a pair of crossed links, 12 and 13, that are of a corresponding length, The ends of these links are pivotally secured to the sides of the rear ends of the Spreaders and to the flattened ends of the blocks 10 and 11, respectively, and midway between their ends each pair of these links is pivoted together and said pairs are connected by a transverse bolt 15. The diameter of the portion of this bolt interposed between the two pairs of links is greater, than that, 16, upon which the links are pivoted, and the diameters of the outer extremities of the portion 16 are still further reduced to form extensions 17 upon which washers 18 are mounted and the outer ends of said extremities are riveted or swaged to form heads that retain the washers securely in place. The washers are of such diameters as to confine the links on portions 16 upon which they can freely move.

When the ends of the links are brought nearer together they cause the spreaders to separate farther and when the ends of said links are separated the said spreaders can be moved nearer together. In order to separate said spreaders a thumb-nut 14 is mounted on the screw-threaded bar 5 of the upper spreader 7 and by turning this nut to move and push block 10 toward said spreader 7,

' tween the disk C and the nut' 13 and c, and

the ends of the links will be moved nearer together and the spreaders separated. For example, in Fig. 1 of the drawings my in vention is shown as lifting the coil springot' the valve. In order tollift it the Spreaders are brought together and then inserted bethen the thumb-nut 14: is screwed on the screw-threaded bar toward the spreader thereof and causes said spreaders'to move away from each otherand correspondingly 7 separate said dlskfrom sald nut. Thepressure of the spring will retainmy improved extractorin the position shown without the necessity of holding the same in place by hand, and will leave the hands ofgthe operator freeto manipulate the valve-stem or the valve mounted on its end in such manner as may be deemed necessary, either to raise the stem so as to lift the valve off ofits seatto permit it to be ground or otherwise.

What I claim as new is:

c 1. A device for lifting and removing stemvalves comprising two Spreaders the free ends of which are bifurcated and adapted to straddle the stem of thevalve, bars secured to and projecting from said Spreaders opposite their free ends, crossed links pivotally connected to said spreadersat one end and slidably connected to said bars-at the other for separating said spreaders and bars apart f and maintaining them parallel to each other, a transverse bolt connecting said links at their points of intersection, the diameters of the ends of said bolt beingv reduced where they pass through saidlinks, and the outer extremities of said ends' b ei'ng still "further reduced,' and washers mounted on said eX- tremities and retained thereon by riveting the said extremities. V

2. The combination with parallel bars, blocks slidable'along said bars, and pairs of crossed links connecting said bars, adjacent ends of certain of the links having slidable pivotal connection-with ad acent blocks,- of

means for pivotally: connecting the medial.

portions of complemental crossed links coinpIlSlDg abar having its extremities reduced to form cylindrical studs on wh ch the 1nnermost of said links are journal ed, said studs being further reduced to form smaller studs R. G. DAsBAoIn DAVID BARR.

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