US1304110A - Pbimihg akd testing cup - Google Patents

Description

0. A. SMITH.

PRIMING AND TESTING CUP.

APPLICATION FILED OCT. 30. 1911.

Patented May 20,1919.

A "DRIVE 1! OSCAR A. SMITH, 0F CLEVELAND, OHIO.

PRINTING: AND TESTING CUP.

Specification of Letters Patent.

Patented May 2%, 191%.

Application flleii Qctober so, 1917. Serial No. 199,252.

To all whom it may concern:

Be it known that I, OSCAR A.. $MITH, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Priming and Testing Cups, of which the following is a specification.

This invention relates to priming and testing cups for gas engines, the object of the invention being to provide an improved map, which cup can be very economically made, yet have all the advantages of the cup shown and described in my prior Patent N 0. 1,153,457 dated September 14, 1915..

In the present improvement, like that shown in my prior patent, the valve is maintained closed by pressure thereon. Moreover, by reason of the construction, the carbon and soot cannot close or clog up the opening or passageway since any that forms on the valve is fractured when the valve is opened, as the valve passage by reason of the manner in which the valve opens and closes, is entirely cut off from the combustion chamber of the engine and moreover, by means of the present construction the valve is proof against leakage, and therefore it is always possible to easily manipulate the valve without liability of the carbon injuring the valve seat or valve face, so that the valve is always maintained tightly seated, thus preventing any possible loss of power through improper seating of the valve.

In my prior patent the priming cup was made in two parts; in the present improvement it is shown made in three, and this permits the cup portion to be readily drawn out of sheet metal, such as sheet steel or sheet brass, while the body portion can be readily made upon an automatic screw machine from a solid metal block or bar stock and these parts assembled by threading one on to the other or by spinning or peening one part on to the other. This permits the cup portion to be drawn out of sheet metal of any design desired, and quickly assembled with the body portion of the cup as hereinbefore stated. Thus, the cup portion may be made cheaper and of different sizes and designs, the cost of drawing the cup of sheet metal and assembling it to the body being considerably less per cup than to make the cup of an integral structure of brass .upon an automatic screw machine, as shown in my prior patent.

In the drawings accompanying and forming a part of this specification,

Figure 1 is a vertical sectional view of one form of this improved cup, the dotted lines illustrating. the valve opened to the fullest extent that it is possible to open the same, although in practice it will of course .be understood that one or more turns will open the valve all that is necessary; Fig. 2 is a similar view illustrating another form of the present improvement; Fig. 3 is a vertical sectional view of the cup shown in Fig. 1; Fig. at is a top view of the body portion shown in Fig. 1; Fig. 5 is a vertical sectional View of the body portion shown in in Fig. 1; Fig. 6 is a view of the valve member; and Fig. 7 is a vertical sectional view of the structure shown in Fig. 1, with the valve stem removed, and illustrating one way of connecting the cup with the body, this figure also showing a peening tool, by means of which a portion of the body may be peened or spun over the flange of the cup portion.

Similar characters of reference indicate corresponding parts in the several figures of the drawings.

The present improved priming and testing cup, while particularly adapted for gas engines, may of course be used forvarious purposes, and it comprises a flaring cup porengine. The threads in the present instance are shown as of the tapered variety, although a straight thread :could be used. The portion 2 is formed of sheet metal, as for instance sheet steel or brass, by being drawn therefrom, and is connected to the body in some suitable way, two of which are shown herein, as by providing the body with an external threaded portion 5 in Fig. 2 and the lower end of the cup with internal threads 6, or by forming the cup with an internal flange 7 as in Fig. l and providing the body with an annular recess or groove 8, and then peening by a suitable tool 20 a portion of the body as 9 over the flange 80f the cup, as shown in the main figures of the drawing. The body is provided above the threads t with a wrench-receiving portion 10 of any uitable form, which, during the 12 shown as an axial passage-way extending through the body and a part of the walls of which are threaded lengthwise thereof as at 13 for the valve member.v Obviously the openings 11 might be simply holes drilled through the body and opening into the passageway 12 at the lower end thereof adjacent to the valve seat, but the slot formation shown is the less expensive way of forming the opening. This axial opening or passageway 12 terminates at one or the lower end of the body in a valve seat 14, which is shown as of tapered form. Extending through the axial opening of the body and preferably through the cup is the valve member 15 having preferably an enlarged portion 16 provided with threads 17 adapted to suitably mesh with the threads 13 of the body. At the lower end of the threaded portion 17 of the valve member is formed the valve proper 18 having in this instance a tapered portion 18 adapted to tightly fit against the tapered valve seat 14. But it will be understood that any form of valve seat or opening could be used so long as the valve is constructed to bear against the outer edge of its seat. The stem of the valve member 15 is bent or turned at an angle to form a handle as at 21. Obviously the handle may be bent at any desired point, and in the present instance it is so bent as to prevent the valve from dropping away from the body when the parts are assembled, or from opening beyond the desired amount. In the use of the device, gasolene is poured into the cup and when the valve is open it runs through the slots 11 into the cylinder of the engine. Thus it will be seen that when the valve is closed the opening into the body member of the cup at the bottom end of the device is entirely closed by the tapered valve member, so that there is no opportunity for the passage of carbon or soot to the cup or to interfere with the effective closing of the valve, or in any way interfere with the operation of the device so that there is no chance for the valve passage in the body to become clogged, and there is, moreover, no opportunity of one part dropping away from the other into the engine, and the priming of the engine by means of this improved cup is a direct priming, that is to cylinder.

say the liquid runs directly from the cup into the engine. Moreover, by reason of the formation shown the valve will always properly seat itself and thus prevent any leakage and consequent loss of power in the In short in the present improvement as well as that shown in my prior patent the threads of the valve member and body so mesh that there is always a proper fit of the valve on its seat at all points around the seat and of course the stem is bent to form the handle at that particular point which will facilitate the opening of the valve the desired amount without mov ing the valve away from its seat an unnecessary distance.

It will of course be understood that the various details may be more or less changed without departing from the spirit or scope of the present improvement.

I claim as my invention:

1. A three-part priming cup comprising a block or bar stock body having exterior threads at its lower end, a valve seat at its lower: end, and a central threaded passage way communicating with said valve seat, a drawn and flaring sheet metal priming cup assembled with said body at the upper end thereof, and a valve adapted to fit said seat and opening in the direction of the flow of the fluid through the passageway, said valve having a stem projecting through the axial passageway and cup and spaced all around from the side walls thereof, and hav ing threads cooperating with the threads of the passageway. I

.2. A three-part priming cup comprising a block or bar stock body having exterior threads at its lower end, a valve seat at its lower end, a central threaded passageway communicating with said valve seat, an opening extending lengthwise of and communicating with said passageway, and a wrench-receiving portion above said exterior threads, a drawn and. flaring sheet metal priming cup assembled with said body at the upper end thereof, by bending a part of one over the other, and a valve adapted to fit said seat and opening in the direction of the flow of the fluidthrough the passageway, and having a stem projecting through the passageway and the cup, and spaced all around from the side walls thereof and provided with a bent handle, said stem having threads, cooperating with the threads of the passageway.

Signed at Cleveland, Ohio,'this 26th day of October, 1917.

OSCAR A. SMITH.

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