US1192643A - Cylinder testing and priming device. - Google Patents

Description

G- KITCHEN, JR. CYLINDER TESTING AND PRIMING DEVICE.

' APPLICATION FILED DEC. 16. 1915.

.1 ,1 98,643. Patented July 25, 1916 gwuemtoz GEORGE KITCHEN, J31, IGIIELCE, MICHIGAN.

CYLINDER TESTING- .flhll) PEIPdElEd DEVICE.

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Specification of Letters E'atent.

Patented July 25, 19%.

Application filed December 16, 1915. serial lilo. 67,231.

vices, of which the following is a specification.

This invention relates to new and useful improvements in cylinder testing and priming devices. p The primary object of the present invention is the provision of a form of valved priming cup for an explosive motor capable of being employed to position an air pres sure gage for ascertaining the compression conditions of the cylinder. v

A further object of the device is to provide the separate cylinders of a motor with suitable valves communicating with the cylinders and having removable priming cups whereby an initial charge of the explosive fluid may be injected into the cylinders.

while upon removing any of the cups, a fluid pressure gage may be positioned to take the place thereof for the purpose of registering the degree of compression exerted by the motor pistons during the active operation thereof.

The invention. broadly contemplates the provision of priming cup valves upon all of the cylinders of a motor, the cups of which valves may be readily removed and replaced one after another by a pressure gage and whereby the (amount of pressure within the cylinder will'be accurately indicated during the operation of the motor. A saving of gasolene will thus be efiected by noting the difi'erence in compression of the separate cylinders which will indicate leakage and will allow the motor to be repaired. so that the separate cylindersthereof may have an equal degree of compression and consequently exert uniform power upon the crank shaft and uniform running of the motor.

With these general objects in view and others that will appear as the nature of the invention is better understood, the same consists in the novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings and then claimed.

In thmdravi ings forming a part of this application and in which like designating characters refer to corresponding "perils throughout the several views :-Figure' 1 is a side elevation of a four cylinder motor illustrating the manner of employing the present device in connection therewith. Fig. 2 is a vertical transverse sectional view lid through the top portion of one of the cylinders provided with the present device, the cup of the latter being similarlys wn in section.-

- Fig. 3 is anvelevational view t iereof with a pressure gage illustrated in place of the priming cup shown in Fig. 2, and Fig. 4c is a perspective view of the priming cup detachcd.

The present device being primarily em ployed for testin cylinders and being in the form of a separaile priming cup and valve, the same is herein illustrated in connection with the double cylinders 10 of an explosive motor or engine 11. It will be understood that each of the double cylinders 10' provides two separate vertically arranged piston chambers 12 therein, each having a slidably arranged operating piston (not shown) after the usual manner.

The top or end head 13 of each of the cylinders is provided with a valve body 14-. of the usual form-screw-threaded into an opening 15 of the said head the communication with the piston chamber 12 being controlled by means of the turn plug 16 having an op erating handle 1?.

A reduced stem or nipple 18 externally screw-threaded projects vertically from the upper side of the valve body 14, an annular shoulder 19 being provided on the said body surrounding the said stem. A priming cup 20 is provided of the form best illustrated in Fig. i of the drawings-and having an internally threaded boss 21 at the base thereof adapted to be removably positioned upon the stem 18 and screwed down into engagement with the shoulder 19 whereby. the upper free end of the stem lies substantially flush with the inner face 22 of the receiving container of the cup 20. I

It will be understood that the valve and cup hcreinbefore described may, when assembled, be employed after the manner of the usual priming cup in connection with the initial admission of a charge to the ex.- plosion chambers 12 of the motor cylinders. When desired to employ the device for the purpose of testing the compression of the cylinder, the cup 20 is unscrewed from the valve stem 18 and any form of pressure gage such as the Edelmann tire gage 23 herein illustrated is attached to" the said stem, replacing the cup. The cage 23 may nection with the present gage or, the air gage may be manually held in operative contact over the open end of the stem 18 after the manner employed with such devices as the Twitchell or the Schreader air gages in testing tire pressures. v

-VVhen the motor 11 is in operation and the gage 23 is thus secured to the valve stem 18 of the valve body 14 of any of the cylinders, the said gage 23 will at once indicate upon the dial 25 thereof the exact amount of compression exerted by the piston in the cylinder, thus denoting the degree of compression of which that cylinder is capable. The said gage being thus employed in connec tion with each of the cylinders of the motor, the valve handle 17 being manipulated during the testing operation, a record may be made of the compression in each cylinder and such record of the relative strength of each carefully kept.

The normal maximum degree of compression of the cylinders being known, the cylinders may be tested from time to time and in. the event of any marked decrease in the compression of any of the same, the leakage of the compression may be remedied either-in connection with the piston, the

copies of this patent may be obtained for five cents each, by addressing the valves or whatever other part. thereof is.

necessary and the motoriath'us restored to its complete capacity.

The present invention 1s in no manner confined to the form of valve, priming cup or pressure gage herein illustrated, but while the form of the invention herein shown and described is what is believed to be the preferable embodiment thereof, it is nevertheless to be understood that changes may be made in the form, proportion and details of construction without from the spirit and scope of the as hereinafter claimed.

What I claim as new is A cylinder testing device comprising in combination with a cylinder having an explosive chamber therein, a valve removably carried by the said cylinder in direct communication with the chamber thereof, an externally threaded fluid pressure gage receiving stem projecting outwardly of the said valve in axial alinementwith the line of communication between the said valve and chamber and providing an annular shoulder upon the valve surrounding the said stem, and a priming cup having a threaded boss at its base end adapted for mounting on the invention departing said stem in seated engagement with the said annular shoulder.

In testimony whereof I aflix my slgnature.

GEORGE KITCHEN, JR.

Commissioner of Patents,

Washington, D. G.

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