US505991A - nipher - Google Patents

Description

(No Model. f 2 Sheets-Sheet 1.

H. W. NIPHER.

STEAM ENGINE, No. 505,991. Patented Oct. 3,1893.

v '2 Sheets-Sheet 2. H. W. NIPHER.

STEAM ENGINE; No 505,991. Patented Oct. 3, ,1893.-

UNITED STATES PATENT ()FFIcE.

. HENRY W. NIPHER, OFLEBANON, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO \VILLIAM M. DEER AND JOHN S. SNAVELY, OF SAME PLACE.

STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 505,991, dated October 3, 1893. Application filed J'n1y3, 1893. $erial No. 479.475- tNo model.)

To all whom, it may concern: full boiler pressure, and at the same tempera- Be it known that I, HENRY W. NIPHER, a ture-through an elliptical opening 0, in one citizen of the United States, residing at Lebaside of the piston, thus constituting a live non, in the county of Lebanon and State of steam chest for the engine. The piston is 5 Pennsylvania, have invented certain new and provided on the side opposite the opening 0 useful Improvements in Steam-Engines; and find in the-longitudinal and horizontal center I do hereby declare the following to be a full, with a Wrist-pin d, which extends through the clear, and exact description of the invention, opening 0 in the side ofthe cylinder and ensuch as will enable others skilled in the art to gages the crank D of the shaft E, by means IO which it appertains to make and use the same. of 'a ball and socket joint D, which imparts My invention relates to steam engines and to the piston an axial or oscillatory motion has especial reference to that class of engines as it reciprccates in the cylinder, thus c0nin which the piston constitutes the steam trolling the Supply and eXhauSt 0f the engine chest, and in its longitudinal reciprocation in Without theuse of a supplemental valve, the

I 5 the cylinder has imparted to the piston an piston being in itself the valve of the engine.

axial or oscillatory motion whereby the piston The shaft E is supported near its outer end also serves as a valve, controlling the inducin a pedestal F and is provided with a baltion and eduction 5 f th enginei ance wheel G,'and with a suitable driving pul- The invention will be fully disclosed in the icy H, from which power is transmitted to the 20 following ifi ation and claims. machinery to be driven in the usual manner.

In the accompanying drawings, which form In the wall of the cylinder and on opposite part of this specification, Figure 1 represents sides of the horizontal center of the cylinder, a vertical transverse section through the end 011 the side to which the steam supply gine cylinder, the piston and the exhaust pipe I) is connected, are live steam passages 2 5 steam-chest, and a side elevation of the shaft, 6 e which extend to the opposite ends of the its pedestal, the balance wheel and pulley; cylinder and through which the motor fluid Fig. 2 a plan View, showing the cylinder, pisis supplied to move the piston. One of these ton and exhaust-steam chest in longitudinal passages e is shown in dotted lines in Fig. 2, horizontal section; Fig. 3 atransverse section and in the head a of the cylinder adjacent to 30 on the line w:2c Fig. 2; Fig. 4. a like view on the end of the passages e e, are cavities f to the line y'y same figure; Fig.5 a longitudifacilitate the admission of the motor fluid to nal section through the cylinder showing the start the piston, one of which cavities is also piston in side elevation, and also the inducshown in said Fig. 2. tion ports, the piston being in the same posi- In the Wall of the piston B on opposite sides 3 5 tion as in Fig. 2; Fig.6 a side view of the cylof the elliptical opening 0 and on opposite inder detached from the exhaust-steam-chest, sides of the longitudinal center are the steam showing the piston, the wrist-pin and one of. induction ports g g which control the admisthe eduction-ports; Fig. 7 a side and a top sion of steam to the passages e c alternately plan view of the induction-port packing ring as the ports register with said passages, and 0 0 on an enlarged scale, and Fig. 8 a side view said ports are packed by an annular ring h, of the spider which rests upon the packing the inner or concave end 1, of which rests ring as shown in Figs. 3 and 4. against the piston, as shown in Figs. 3 and 4:, Reference being had to the drawings and and upon the outer end of said ring rests a the letters thereon, A indicates the cylinder, spider h'which is held in place by a hollow 5 5 provided with the usual heads a a, and steam screw Z, and adjusted to compensate wear by pipe b, connected to the cylinder in its longia screw m which engages the inner screw tudinal center and communicating with a' thread of the screw Z. On the .opposite side steam generator, not shown. B, the piston, of the piston, on opposite sides of the wristwhich is hollow, and when the steam controlpin (1 and in the longitudinal center of the too 50 ling valve is open is in communication with piston, are exhaust or eduction ports n n, the generator, and filled with steam under which communicate with passages o 0 in the piston and conduct the exhaust-steam alternately from the opposite ends of the cylinder to the exhaust steam-chest I, from which it is conducted in any approved manner.

The engine being constructed substantially as described, the operation is as follows:--The piston being at the end of the cylinder, shown in Figs. 2 and 5, steam is admitted to the port g and passage 8' to drive the piston toward the opposite end of the cylinder and as the piston travels, it is turned on its axis by the wrist-pin d engaging the crank D and the ball and socket joint D cuts off steam gradually and. the steam in the end of the cylinder toward which the piston is traveling is exhausted through the passage 0' into the exhaust steamchest I. By the time the piston has completed its stroke itwill have been turned on its axis to bring the port g to register with the passage e and steam will be admitted to said opposite end of the cylinder and the exhaust steam pass out through the passage 0 into th exhaust steam-chest I; and in this stroke of the piston it is turned upon its axis by the crank and intermediate connections as in the former stroke.

The point of cut-oif is regulated by setting the piston in proper relation to the crank and the ball and socket joint and connecting the wrist-pin thereto.

Having thus fully described my invention,

what I claim is 1. Asteam engine having a hollow reciprocating piston in open communication with the motor fluid supply pipe and provided with eduction ports in the wall of the piston and on opposite sides of the supply opening and extending to the ends thereof, in combination with passages in the wall and extending to the ends of the cylinder.

2. A steam engine having a hollow piston provided with an elliptical opening on one side, induction ports on opposite sides and ends of said opening and exhaust ports and passages, in combination with supply passages in the wall of the cylinder, and means for oscillating the piston in its stroke.

3. A steam engine having a hollow piston provided with an elliptical opening and induction ports in combination with a packing for said induction ports consisting of an annular ring, a spider and means for adjusting the packing to compensate wear.

4. A steam engine consisting of a cylinder provided with supply passages in the wall thereof, a hollow piston in constant communication with the supply' pipe and provided with ed uotion ports and exhaust passages and a wrist-pin,-in combination with a shaft having a crankto which said wrist-pin is connected to impart an oscillatory motion to the piston in its stroke.

In testimony whereof I affix m ysignature in presence of two Witnesses.

HENRY W. NIPHER.

Witnesses! J. H. BASSLER, A. B. SNAVELY.

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