US1500315A - Tool - Google Patents

Description

July 8 1924. 1,500,315

I N. c. HALL Filed Jan. 9, 1922 .iatented July 8, 1924.

UNITED STATES l 1,500,315 PATENT OFFICE.

NELSON o, HALL, or oLm, Iowa.

Toon

Application led January 9, 1922. Serial No. 528,006.

To all whom it may comer/n.'

Be it known that I, NELSON C.- HALL, a citizen of the United States, residing at Olin, in the county of Jones and State of Iowa, have invented certain new and useful Improvements in Tools, of which the following is a specification.

This invention relates to a valve testing tool and has for its ,object the roduction of a simple and efficient tool W ich may be applied over the valve of an engine, such as an engine used in the Ford type of automobiles.

Another object of this invention is the production of a simple and eilicient mechanism for holding the air cup firmly clamped over the valve in'such a position as tofacilitate the testing of the valve.

fWith vthese and other objects in view the invention consists of certain novel constructions, combinations, and arrangements of parts as will be hereinafter fully described and claimed.

In the drawings:

Figure 1 is a vertical section through a portion of an engine casing showing the valve in position, the valve testing tool also being shown in connectiontherewith.

Figure 2 is a top plan view of the structure shown in Figure 1.

Figure 3 is a top plan view of a modied form of the invention, showing the manner in which a clamping lever may be used for the purpose of firmly holding the air cup over the valve.

By referring to the drawings it will be seen that 1 designates the engine casing, which is provided with the usual valve 2 of any suitable or desired construction. The valve 2 is adapted to normally seat upon the valve seat 3, and the purpose of the present tool is to test the closeness of the fit between the valve 2 and the seat 3 to determine whether or not air pumped into the air cup will escape between the valve and the valve seat.

An air cup 4 is used in connection with the present device and this air cup 4 is provided with a concaved channel 5 around the lower edge thereof, for the purpose of receiving a circular rubber or`other gasket 6 as clearly shown in Figure 1. The air cup 4 is preferably cup shaped in form but may be carried to suit the desire of the manufacturer so far as the shape is concerned. The cup 4, however, must be made of suitable size and sha e to fit conveniently over the upper end o the valve seat and must be made larger than the valve port as is illustrated clearly' in Figure '1. The cup 4 is provided 'with an upwardly extending reduced neck 7, this neck 7 being externally threaded at its outer end for the purpose of receivin a pump hose 8 shown 1n dotted lihnes in Figure 1.

A clamping yoke or plate 9 is fitted over the air cup 4 and this yoke 9 comprises a substantially circular central portion havin an aperture 10 Jformed centrally thereo through which aperture 10 extends the re.- duced neck 7. The yoke 9 is provided with a pair of laterally extending arms 11, these arms 11 havin notched ends 12 for the purpose of fitting around the supporting bolts 13 and under the heads 14vof the bolts 13. These bolts 13 may be threaded into the engine casing as clearly shown in Figure 1 for the purpose of lirmly clamping the yoke 9 down snugly over the top of the air cup 4 and causing the same to tightly it around the valve port and constitute an air field therearound.

From thev foregoing description it will be seen that air may be conveniently pumped through the holes 8 and through the reduced neck Z which is provided with a feedin aperture 15 formed therein. The air. wil then pass into the cup 4 and the sealing gasket or washer 6 will prevent the escape of air from the cup. The tting of the valve 2vupon the valve seat 3 may then be very easily and conveniently tested.

In the form shown in Figure 3 the usual I cup 4a is employed, but a lat lever 16 is used having an aperture 17 formed therein for fitting over the reduced neck 7 of the cup 4, One end of the lever 16 is adapted to lit under one head bolt 18, the other end 19 of the lever being free to be pressed downwardly by the operator for the purpose of firmly clamplng the cup 4a upon the head of the engine 1.

It should be understood that certain detailed changes may be made inthe mechanical construction of the device without de arting from the spirit of the invention so ong as these changes fall within the scope of the appended claims. i

1. A valve testing tool comprising an air cup, means for4 admitting air` into a cup, said yoke comprising a plate, said cup proicc provided with e central opening for receivin? said neck, said yoke provided with latere 1y extending arms having notched ends, and clamping means engaging the notched ends for clamping the cup over end aroundY the valve of an engine.

2. A valve testing tool com rising an air cup, means for admitting air lnto said cup, e yoke tting over the' cup for clamping the. same in position, a sealing gasket cerried by the bottom of the air cup for form ing en air tight joint around the bottom of the air cup, said yoke comprising a plete, said cup provided with an air inlet neck, seid yoke provided with a centrel openin for receiving said neck, seid yoke provide with `leterelliy extending arms he,

Y 'nente notched ends, and clam ing means eeging the notched ends for c amping the cup over and around the valve ofi an ene.

3. A valve testing tool comprising an air cup, means for admitting air into said cup, a iyoke comprising a plate, seid cu provi ed with an-air inlet neck, said yo e provided with an opening for receiv said neck, and ciampmg means engaging seid yoke for clamping the cup over and around thevaive of an engine.

in testimony whereof amx my signature in presence of two Witnesses.,

NELSUN C., ii A VWitnesses:

L. S. Menen i: z

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