US440057A

US440057A - Lewis b

Info

Publication number: US440057A
Authority: US
Publication date: 1890-11-04
Anticipated expiration: 1907-11-04

Description

(No Model.)

. L. B. PHILLIPS. VALVE POR STEAM ENGINES.

Patented Nov. 4, 1890.

m a P m Mwwv/ Il. o u k UNITED STATES PATENT OFFICE.

LEWIS B. PHILLIPS, OF NATURAL BRIDGE, NEW YORK, ASSIGNOR TO CALVIN V. GRAVES, OF SAME PLACE.

VALVE FOR VSTEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No. 440,057, dated November 4, 1890. Application tiled March 4, 1890. Serial No. 342,677. (No model.)

To all whom t may concern:

Be it known that I, LEWIS B. PHILLIPS, a citizen of the United States, residing at Natural Bridge, in the county of Jefferson and State of New York, have invented certain new and useful Improvements in Valves for Steam- Engines; andI do 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 the letters of reference marked thereon,\vliich form a part of this specification.

This invention relates to certain new and useful improvements in valves for engines; and it has for its object, among others, to provide an improved slide-valve having ports for co-operation with those of the steam-chest, and provided with a rotary valve within a bore of the said slide-valve; The rotary valve has ports, which will be hereinafter fully described, which are adapted to register with those of the slide-valve and steam-chest when desired to reverse the engine, the said rotary valve being operated by ahand-lever or other suitable contrivance.

Other objects and advantages of the invention Will hereinafter appear, and the novel features thereof will be particularly defined by the appended claims.

The novelty resides in the peculiar combinations and the construction, arrangement, and adaptation of parts, all as more fully hereinafter described, shown in the drawings, and then particularly pointed out in the claims.

The invention is clearly illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form a part of this specification, and in which- Figure l is a vertical section through my improved valve, showing alsothe portion of the steam-chest with its ports. Fig. 2 is a similar view with the rotary valve in a diiferent position. Fig. 3 is a perspective view of the rotary valve removed. Fig. 4 is an end view of the valve. v

Like letters of reference indicate like parts throughout the several views.

Referring now to the details of the drawings by letter, A designates the steam-chest, the face of which, upon which the slide-valve Works, is provided with the three ports a, b, and c, the two outer ones being live-steam ports and the central one the exhaust, there being nothing novel in this construction, it being common to alldevices of this character.

B is the slide-valve, which is bored longitudinally, as shown at d, and is provided upon its under face with the steam-passages e c and f f and a central passage or port g, which central portis enlarged upon each end, as shown,and at one side has communication with a longitudinal exhaust-passage h. The upper face of the slide-valve is provided with end vports j j and intermediate ports k 71:. Fitted within the bore of the slide-valve, so as to be revolved therein,is a rotary valve C, which has diametrical ports m m near each end and a central longitudinal chamber n, and extending through this rotary valve at right angles to the above-mentioned ports m m are the ports o o, beyond which are the cross or diagonal ports p 19. Thelongitudinal exhaustpassage h has communication with the bore of the slide-valve near each end through passage-ways q q, as shown.

In practice the rotary valve is fitted within the bore of the slide-valve, and is adapted to be actuated by a lever of any suitable form, connected therewith in any convenient manner. The slide-valve works wit-h eccentric and operates to cut off the steam similar to the ordinary slide-valve, and my improvement can be readily applied to engines now in use by simply moving the ports that lead from the steam-chest to the cylinder a little farther apart.

, The stem on the rotary valve should project through the back end of the steam-chest and there receive its lever, by the turning of which the said rotary valve can be easily turned one-quarter wav round to change the course of steam and instantly reverse the engine.

When the rotary valve is turned so that its end ports register with the end ports in the shell of the slide-valve, steam is let through both valves at each end and is cut off by the roo slide-valve as required to be used in the cylinder, and the exhaust-steam goes from the cylinder to the rotary valve by the ports oo, and goes from said ports to the center port through thelongitudinal ehambern, and is exhausted at the side of the steam-chest, the same as in the common slide-valve engine.

By turning the rotary valve one-quarter Way round the end ports in the slide and rotary valves are shut oii from the live steam, and the two central ports are opened for live steam, the exhaust going from the cylinder to the rotary valve by'the end ports of the slide-valve, and'then through the cross-ports p p to the center exhaust-port.

By the above-described construction the engine may be reversed almost instantly. The parts are simple, eflicient, and durable, and easy of repair.

What I claim as new is-` 1. A slide-valve provided with a rotary valve having longitudinal and a plurality of transverse passages, substantially as specified.

2. A slide-valve longitudinally bored and having transverse passages, combined with ay rotary valve {it-ted to the said bore and having longitudinal and transverse passages, substantially as specified.

3. A slide-valve longitudinally bored and having a longitudinal exhaust-passage, combined with a lrotary valve fitted to the said bore, substantially as specified.

4. A slide-valve bored longitudinally and having a longitudinal exhaust-.passage communicating with said bore, and having a rotary valve controlling the longitudinal exhaust-passage, as set forth.

5. A slide-valve bored longitudinally and having a longitudinal exhaust-passage coinmunicating with said bore at each end, and a rotary valve controlling the longitudinal exhaust-passage, as set forth.

(3. A slide-valve bored longitudinally and having a longitudinal exhaust-passage oommunicating with the bore at each end, combined With a rotary valve tted to the bore of the slide-valve, substantially as specied.

7. A slide-valve bored longitudinally and d n'iunicating with the bore at each end and ports upon its under faces, with a central exhaust-port communicating with the longitudinal exhaust, substantially as specied.

9. A slide-valve bored longitudinally and having a longitudinal exhaust-passage, ports upon the upper and under faces, and a central exhaust-port atthe under side communicating with the longitudinal exhaust, and communications between the bore and longitudinal exhaust at each end, as set forth.

1Q. A slide-valve bored longitudinally and having a longitudinal exhaust-passage, ports in the upper and under faces, and a central exhaust-port at the under side, communicating with the longitudinal exhaust, and communications between the bore and longitudinal exhaust at each end,combined with a rotary valve fitted to the bore of the slide-valve and having ports, substantially as shown and described.

In testimony whereof I affix my signature in presence of two Witnesses.

LEWIS B. PHILLIPS.

Vitnesses:

CALVIN B. GRAVES, HENRY BURNS.