US540461A - Valveless engine - Google Patents

Description

(No Model.) 7 2 Sheets-Sheet 1.

. A SOHEID.

VALVBLESS ENGINE.

No. 540,461. Patented June 4,1895.

ATTORNEYS UNITED STATES PATENT O FICE.

ADAM SCHEID, OF HARRISON, NEW JERSEY.

VALVELESS ENGINE.

SPECIFICATION forming part of Letters Patent No. 540,461, dated June 4, 1895.

Application filed N v mber 15 1394. Serial No. 523,853. (No model.)

To all whom it may concern:

Be it known that I, ADAM SCHEID, a'citizen of the United States, residing in Harrison, Hudson county, and State of New Jersey, have invented certain new and useful Improvements in Valveless Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of this invention is to provide an engine for steam, gas, air or any other motive fluid, of simple, strong and durable construction, and which on account of its novel arrangement of parts does not require a Valve for controlling the motive fluid inlet and exhaust respectively. 7

The invention consists in the improve valveless engine, in its cylinder, piston and piston rod respectively, in the ports and channels arranged in the said cylinder and piston, and in the combination and arrangement of parts, substantially as will be hereinafter more fully described and finally embodied in the claim.

Referring to the accompanying drawings, in which like letters of reference indicate corresponding parts in each of the several views, Figure 1 represents in a central sectional view the cylinder, piston, and pistonrod of my improved valveless engine. Fig. 2 is a similar view illustrating a modified form of the same, and Fig. 3 a central sectional View of a rock-drill provided with my im proved valveless cylinder and piston.

In said drawings it represents the cylinder, 22 and b the cylinder heads and c and d the motive fluid inlet and exhaust respectively, arranged about midway on the cylinder and at opposite sides thereof. On each end of the cylinder a is arranged an enlargement or chamber 19 whereby a large amount of steam can accumulate in the said ends.

In the construction illustrated in Fig. 1, the piston e is provided at or near each end with a circular groove 0 (o adapted to be alternately brought in communication with the motive fluid inlet 0. Said grooves 0 and 0 are in communication with the opposite ends of the cylinder by ports h and h penetrating the piston as shown in dotted lines. The exhaust channels d and d are arranged on eachside of the fuel inlet 0 and are connected with the exhaust d by means of the channel or port d.

In the construction illustrated in Fig. 2, the motive fluid inlet communicates with the circular groove d arranged in the cylinder and about midway between the exhaust channelsd' and (1 The circular grooves 0 and o of the piston are done away with. and the channels 71. and h extend to and through the surface of the piston,as clearly shown in said Fig. 2. a

Providing my improved engineis a steam engine'the operation isthen as follows: The steam enters through inlet 0 and port h of the piston into the forward-end of the cylinder. The piston is thus forced backward until it has. cleared the circular channel d when the steam is exhausted. Simultaneously the port h is brought into communication with the steam inlet and the steam enters through said port into the rear end of the cylinder, thus forcing the piston forward until it has cleared the annular channel d of the cylinder a, when the steam is again exhausted and the former described operation is repeated. As can be clearly seen from the drawings, the

ports h and h also act as exhaust ports, in

the backward and forward motion of the piston respectively, as they connect during the travel of the piston the rear and front end of the cylinder with the circular exhaust channels d and d respectively, thus allowing the remainder of the steam (should there be any),

to exhaust, before fresh steam is let into the cylinder.

In Fig. 3 a rock drill is illustrated, which is provided with my improved device. The piston operates on'the drill rotating bar M,

.controlled by the rotating device R in the piston, all of said parts being arranged substantially as and for the purposes described.

In testimony that I claim the foregoing I have hereunto set my hand this 3d day of November, 1894.

ADAM SCH EID.

Witnesses:

ALFRED GARTNER, DUNCAN M. ROBERTSON.

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