US411944A

US411944A - Valve for steam-engines

Info

Publication number: US411944A
Authority: US
Publication date: 1889-10-01
Anticipated expiration: 1906-10-01

Description

2 Sheets Sheet 1.

(No Model.)

` G.V,0GBL. VALVE POR STEAM ENGINES.

' Patented (1ct. 1, 1889.

N PLTERS. Phexa-Lirhagmphnr, waning. 51C.

(No Model.)

. 2 Sheets-Sheet 2. C. VOGEL.

VALVE FOR STEAM'BNGINBS.

Patented Oct. 1, 1889.

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NTTED STATES PATENT Prion.

CHARLES VOGEL, OF FORT LEE, ASSIGNOR TO l-IIMSELF AND GEORGE OROURKE, OF ENGLEWOOD, NEV JERSEY.

VALVE FOR STEAM-ENGINES.

SPECIFIATION forming part of Letters Patent No. 411,944, dated October 1, 1889.

Application filed J une 13, 1889. Serial No. 314,148- (No modell) To col/'5 1071.072?, it may concern:

Be it known that I, CHARLES VOGEL, of Fort Lee, in the county of Bergen and State of New Jersey, have invented an Improvement in Valves for Steam-Engin es, of which the following is a specification.

This invention has for its object the supply of steam to two or three cylinders by one circular and rotary valve, and the exhausting of the steam direct-ly through such valve.

Rotary valves have before been used in steanrengines. By my present improvements the construction of the valve is simplified, and the spindle that is employed for driving the valve passes up from below such valve and is in or adjacent to the exhaust-port, so that risk of leakage around such spindle is avoided and the valve can be lifted out of the chest for cleaning or repairs without disturbing the other parts, except to remove the cover of the steam-chest.

In the drawings, Figure l is a plan of the engine with the cover of the steam-chest removed and the valve taken out. Eig. 2 is a plan view of the valve. Fig. 3 is an inverted plan showing the face of the valve. Fig. 4e is a section of the engine at the line a: Fig. l; and Eig. 5 is asection of the valve at the line l] 1'/- I have represented three steam-cylinders A B C, and within each cylinder is a plunger or piston D, and the main drivingshaft E has upon it three cranks at one hundred and twenty degrees apart, and there are connecting-rods F from the respective cranks to the pistons or plungers D.

My present improvements are especially adapted to single-acting engines, such as represented, but not necessarily limited thereto, and when three cylinders are made use of a more uniform revolution of the main drivingshaft is secured. The head G is common to all three cylinders, and in it are the ports 2 3 4 to the respective cylinders, and upon this head G is thesteain-'chest formed by the short cylinder or rim H; and I is the cover of the stearn-chest, which is secured in any suitable manner. I prefer to screw the same into place, there being a .flange to the cover anda screw-thread around the upper portion of the steam-chest. rihe valve-seat is on the same plane, or nearly so, as the top of the head G, and it is preferably turned oit level; but it might be more or less conical, and the face of the valve K corresponds to the valve-seat.

' This valve K is circular, and it is preferably provided with a stem 5, passing up into circular recesses in the center of the cover I, which stem aids in retaining the valve in its position as such valve is revolved. I make use of a valve-moving spindle L within the case 6, which case isl preferably cast with the steaniecylinders A B C, and it is tubular for the reception ot' said spindle, and there may be a gland or stuffing-box at the lower end of this spindle, as at 7, to make this spindle steam-tight, and this spindle is made use of for giving the proper rotary movement to the valve l, and for this purpose suitable gearing is employed for connecting the spindle L with the main driving-shaft E.- I have represented a pinion S on the driving-shaft E, gearing to a wheel `M upon the shaft N, and bevel geaiewheels 9 l0 on the spindle L and shaft N respectively, and when the valve K revolves on ce to two revolutions of the shaft E the gearwheel M will be twice the size of the pinion 8. At the upper end of the spindle Lis a T head or clutch l2 and pin 13, the latter passing into a central hole 14 in the under side of the valve, and there is a cross-slot l5 for the T head 12, (see Fig. 3,) `so that the spindleLcan give to the valve the proper rotary movement, but lthe valve canV be easily lift-ed oiT the end of the spindleY when the cover I of the steam-chest is removed. This gives access to the face of the valve and to the valveseat for cleaning, grinding, facing, or repairing by the simple removal of the cover of the steam-chest.

The valve K is provided with the necessary ports for the passage of the steam and for the exhaust, and these ports are located in such relation tothe ports 2 3 e that steam will be admitted to the cylinders in succes- 9 IOG exhaust-

passages

19 and 20, formed as recesses or cavities in the face of the valve, and I re-l mark that to strengthen the rim of the valve I have shown bridges at 21 across the

steamports

16 and 17, but these bridges may be omitted. l y

Theends of the steam-ports and of the exhaust-passages are radial, or nearly so, and the plane surfaces of the valveface at 22 and 1o 23, being wider than the ports 2 3 4, cover such ports successively and allow the steam to act expansively, and according to the width of these

faces

22 and 23 in comparison with the width of the ports 2, 3, and 4 the steam will be allowed to act expansively to a greater or less degree.

It will now be apparent that as the steamport 16 opensy to admit steam through the port 2`the port 4 will be covered by the? snrfa'ce 22, and then such port 4 will be opened `to the eX'haust simultaneously with the coverilig ofthe port 3 by the surface 23, and in` thefurther movement of the valve the port 3 will be opened for the admission of steam during the time that the steam is acting eX- pansively in the cylinder A, and the steam will by this time have been exhausted from the cylinder C and its piston have completed its upsiroke as the port 16 opens to admit 3o steam to the port 4, and the part 22 covers "the port 3, and at this time steam will be eX- hausted from .the cylinder A by the port 2 and passage 20, and'so on the operations will be performed successively, and as the valve K makes one revolution to two revolutions of the shaft E the steam-port 17 and the exhaust-passage 19 will act the same as has be-' fore been described in connection with the ports 16 and the exhaust-passage 20. It is to 4o be understood that the steam can be admitted to the valve-chest in any suitable manner.

I have shown a connection at P for the steampipe and apassage-way leading up into the side of the circular steamchest at 25, and a u connection or pipe at Q for the exhaust, there 'being an opening at 27 down' through the valve-seat into such exhaust, the opening 27 beingadjacent to the valve-moving spindle L, and the exhaust-passages 19 and 2O being 5o united by a central circular passage in the face of the valve. Such exhaust-passages 19 and 2O are always open to the exhaust 27 and Q.

Y A rotary valve has been made with a cen# tral hollow spindle forming an exhaust-tube.

55 lhis construction renders the valve diflicult Vof access for cleaning or repairs. ln other cases the rot-ary valve has had t-wo cylindrical walls and rested upon an annular rib in which are the ports leading to the cylinders, the steam being within the inner cylindrical wall and the exhaust-port around the outer wall.

In my improvement the valve resting on a flat seat and having port-s through it and eX- haust-ports in its under surface and being rotated from below theseat is easily made, and is accessible for repairs or for grinding or iinishing the face of the valve or the seat.

1. The combination, with the cylinder and piston in an engine, of a circular steam-chest A having a lateral opening through which steam is supplied, andV a circular valveseat having ports therein leading to the cylinder and a central exhaust-port, a circular valve covering the exhausti'port and having ports and recessed exhaust-passages, a spindle for rotating the valve, having a T head or connection and passing up from beneath the valve",` so that the valve may be removed from the spindle, and a removable cover to' the steamchest, substantially as set forth. y

2. The combination, with the cylinder and piston in an engine, of a circular steamlchest havinga lateral opening through which steam is supplied, and a circular valveseat having ports therein leading to the cylinder and a central exhaustport,a circular valve cover-A ing the exhaustlport and having ports and recessed exhaustpas'sages and a central stein,` a spindle for rotating the valve, having a T head or connection and passing up from be:v neath the valve, so that the valve maybe removed from the spindle, and a removable cover to the steam-chest, having a central socket for the valve-stem, substantially as set forth. n

3. The combination, with the cylinders A B C, their pistons, connecting; rods,- main shaft and cranks, of a head to the three cyl: inders, having steam-ports in it, a steam'schest upon such head, having a central exhaust and lateral steam-supply, a removable cover'to the steam-chest, a valve having two steam-ports and recessed exhaustpassages and covering the central exhaust-port, a spindle passing up" from below for rotating such valve, and gear# ing for connecting the spindle and the main shaft, so that the valve may revolve once for every two revolutions of the main shaft, substantially as set forth.

Signed by me this 10th day of June, 1889.

CHARLES VOGEL.y Vitnesses:

GEO. T. PINCKNEY, WILLIAM G. MoTT.

IOC

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