US328787A - Daniel p - Google Patents

Description

(No Model.)

D. P. KANE.

RBVBRSING -DBVIGB POR ENGINES.

No. 328,787. Patented Oct. 20, 1885.

N. PETERS. PMm-Limngnpner, washington, n. c.

UNITED STATES FATTNT Ormea.

DANIEL P. KANE, OF ST. LOUIS, MISSOURI.

REVERS-ING DEVICE FOR ENGINES.

SPECIFICATION forming part of Letters Patent No. 328,787, dated October 20, 1885.

Application filed October 4, 1884. Serial No. 144,749. (No model.)

To @ZZ whom it may concern:

Be it known that I, DANIEL I?. KANE, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Reversing Devices for Steam- Engines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

Figure l is a side view of an engine having my device. Fig. 2 is an inside view of the oscillating valve, and Fig. 3 is a section of the same at 3 3, Fig. 2. Fig. 4 is a face view of the valve-seat. Fig. 5 is a longitudinal section at 5 5, Fig. 6, and Fig. 6 is a transverse section at 6 6, Fig. 5. Fig. 7 is a side view of the valve-chest with the cover removed, giving an outside view of the oscillating valve with parts of same broken away to show the steam-ports and the course of the currents of live and exhaust steam. Fig. 8 is a side view of two slide-valves working in separate chests, and forming a modification of the oscillating valve, the other parts being substantially the same in both. Fig. 9 is a transverse section at 9 9, Fig. 8. i

A is the bed of an engine; I3, the cylinder; C, the live-steam pipe, and D the exhaustpipe.

E is the piston-rod; F, the cross head F', the connecting-rod; G, the crank-wheel, and H the crank-shaft.

I is the eccentric, and J the eccentric-rod.

K is the valve-chest, which may be cast in one piece with the cylinder, or may be attached thereto. The valve-chest is boredlongitudinally near the top and bottom to receive two plug-valves, L and L, which are closely fitted in said bores and which work endwise therein. The outer ends of the plug-valves are connected to the opposite ends of a handlever, M, working on a fulerum at N, the construction being such that as one valve is drawn outward the other is pushed inward.

O'is a live-steam chamber or passage in constant communication with the steam-pipe C.

P are ports leading from the chamber O to the bores L2, in which the valves L L work. The valves L L have angular or curved passages Z, so made as to open communication between the ports P and ports Q Q,leading into the two chambers r r of the oscillating valve R. This valve is cylindrical in form, and chambered out on the inner side, forming the two chambers r r. These chambers are separated by a diametric partition, r2, whose edge works with a steam-tight bearing against the valve-seat S. It is intended that the marginal ange r3 shall also have a steam-tight bearing upon the valve-seat, so that there cannot be any escape of steam from the chambers r r except through the steam-ports.

. T T are steam-ports leading directly into the ends of the cylinder and forming the cylinder-ports.

The valve R is sunk into a recess, U, of the steam-chest, of which the valve-seat forms the bottoni. The valve R turns with a central gudgeon or stem, R,which has bearing in the cover or lid K of the valve-chest K.

K2 is a crank on the gudgeon, whose pin is engaged by the yoke J ofthe eccentric-rod J.

In addition to the passages Zthe plug-valves L L have transverse steam-passages Z which pass directly and diametrically through the valves in a horizontal direction, and which form communication between the ports Q Q and the ports Q2 in line therewith, and which are in communication with the exhaust-passage D.

The operation of the device is as follows: Supposing the valves L L to be in the position shown in Figs. l, 5, and 6, and the oscillating valve to be in the position shown in Fig. 7, the live steam will enter the chamber r of the valve R, through passage P Z Q, and will enter the end of the cylinder nearest the crank-shaft through the port T, and will exhaust from the cylinder through the port T', and pass from the chamber r into the exhaustpassage D,through ports QQ2 and the valvepassage Z. Vhen the eccentric, by movement of the valve R, throws the port Q into communication with port T and the port T into communication with the port Q, the motion of the piston is reversed.

To reverse the rotation of the crank-shaft, the position of the lever M is reversed, drawing out the valve L and pushing in the valve L. Then the live steam will pass through pas- IOO sage or chamber O and enter the lower valvechamber, 1", and exhaust from the cylinder through the chamber r.

In the modification shown in Figs. 8 and 9, the construction is similar, except that two slide-valves are used in place of the oscillating valve. In this case the steam-chambers r r have a fixed partition between them (lettered r2) in the same way as the oscillating partition of the oscillating valve. The valvesR may each consist simply of a iiat plate sliding over and held to the valve-seat, and made by the action of the eccentric to alternately close and open the two cylinder-ports T T. When the parts are in the position shown, the chamber .r is the live-steam chamber, and the chamber r the exhaust-chamber. The valve-stems R are connected to the oppositeend of a lever, R2, which is oscillated by the eccentric-rod J. The construction and operation of the valves L L is exactly similar to that before described.

I claim- 1. An oscillating valve provided with two unconnected chambers and working on a seat having two cylinder ports and two other steam-ports, in combination with a valve interposed between the said steamports and the steam-chest in communication, respectively,

with the ports of the two reversing-valves, and ports in the steam-chest leading to the ends of the cylinder, substantially as and for the purpose set forth.

3. The combination of the two valves L L', connected to the opposite ends of a lever, livesteam port C, and exhaust D, a valveseat having ports QQ and TT,and a valve or valves, R, constructed and arranged to operate substantially as and for the purpose set forth.

4. The combination of the two valves L L', coupled together by lever M, the valve R, having two disconnected chambers, r r', the valve-seat and valve -chest, and the valve ports and passages, substantially as and for the purpose set forth.

DANIEL P. KANE.

Witnesses:

SAML. KNIGHT, JOSEPH VVAHLE.

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