US977245A - Valve-remover. - Google Patents

Description

P. G. WIEST.

VALVE REMOVBR.

APPLICATION run my 1951909.

Patented Nov. 29, 1910.

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PETER C. WIEST, OF YORK, PENNSYLVANIA.

VALVE-BEMOVER.

Specification of Letters Patent.

Patented Nov. 29, 1910.

Application filed May 19, 1909. Serial No. 496,960.

To all whom it may concern:

Be it known that 1, PETER C. lvins'r, a citizen of the United States of America, residing at York, Pennsylvania, have invented certain new and useful Improvements in Valve-Removers, of which the following is a specification.

My invention relates to a device particularly adapted for compressing the valvesprings of explosive engines and the like, to provide for relieving the pressure of the springs on the valves, in order that said valves may be conveniently removed.

It is well understood by those familiar with the explosive type of engine that the springs which retain the valves seated, act with considerable power, and as it is frequently necessary to raise these valves, it is the object of the present invention to provide an improved tool for this purpose which is of simple strong and durable construction.

Figure 1 is a side elevation of the valve remover showing the same in its applied position and illustrating certain parts of a gas engine valve mechanism in section. Fig. 2 is an enlarged perspective view of the valve remover. Fig. 3 is a bottom plan view of the lever.

The numeral 1 denotes a valve of the ordinary type used-in explosive engines, 2 the valve rod, 3 the spring and 4 a washer slidable over the valve rod, upon which the spring bears.

The tool comprises a lever indicated by 5, the forward end of which terminates in a fork 6, the prongs of which form the spring engaging means, while the slot or open portion 8 is adapted to receive the stem of the valve, to provide for the insertion of the tool beneath the spring.

My improved tool also comprises a fulcrum member, consisting of a post 10, threaded a suitable distance of its length, for the accommodation of a bearing plate 11 mounted thereupon. It will be obvious, due to the threaded connection between the post and plate, that the latter may be readily adjusted, to ada t the tool for the use under different conditions. In the plate 11 are two recesses 12 for the reception of the downwardly turned ends 7 of the fork 6, which hold said end in engagement with the plate when the tool is in use. T o further prevent the lever 5 from becoming displaced, separated from the fulcrum member while being used I provide the plate 11 with a flange 11 upon three of its sides, so that should the members 7 become unseated they would be prevented from slipping from the plate. The lever 5 is provided with two sets of fulcrum points 7 and 7 spaced apart along the length of the slot 8 so as to form a lever of the first and second order as may be found expedient in order to obtain the necessary purchase on the valve spring to lift the latter. Either set of fulcrum points 7 and 7 may be brought into engagement with the sockets 12 of the fulcrum plate as will be readily apparent, thus increasing the utility of the device as a whole.

To illustrate the manner of using my improved tool, I have, in Fig. 1, shown the same as applied for its designed purpose of compressing the valve spring of an explosive engine. The engine parts shown are of conventional form and will be readily under stood by persons skilled in the art, without a detailed description thereof, the valve 1 being maintained normally closed by means of a spring 3, inserted between the valve casing and a washer t secured to the valve stem 2 by means of the usual key 13 inserted through a keyway formed in said valve stem, the force of the valvespring 3 being applied to the valve through the medium of said washer and key.

When it is desired to remove the valve the fulcrum member is placed in position, the plate 11 adjusted to the required height and the lever inserted beneath the spring around the valve rod, and the ends 7 of the fork, seated in the recesses 12. By means of the lever 5 the spring may now be easily compressed to relieve the key 13 from the pressure thereof and the key removed, whereupon the valve 1 with its stem is free to be withdrawn through a suitable opening provided for the purpose in the valve chamber, said opening being normally closed by means of a suitable plug 1 1.

Having thus fully described my invention what I claim is:

A valve remover comprising a threaded stem forming a fulcrum block support, a fulcrum block having threaded and rotatable connection With said stem and a valve In testimony whereof I have hereunto set sprmg eompressmg lever embodymg a my hand 1n presence of two subscrlblng Wlt forked end, the arms of WlllCh form an open nesses.

slot to receive said stem and are provided PETER C. VIEST. With a plurality of sets of fulcrum points Vitnesses: spaced apart along the length of the slot for A. J. BRENNEMAN,

engagement With the fulcrum block. N. S. Ross.

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