US400787A - parker - Google Patents

Description

(No Model.) 5 I 2 Sheets-Sheet 1. S. J. PARKER.

STEAM PUMP.

No. 400,787. V Patented-ApnZ, 1889.

(No Model.) 2 Sheets-Sheet 2.

s. J. PARKER.

STEAM PUMP. 7 No. 400,787. Patented Apr.- 2, 18489.

UNITED STATES PATENT OFFICE.

SAMUEL J. PARKER, OF ROCHESTER, NEW YORK, ASSIGNOR TO ELIZA J. PARKER, OF SAME PLACE.

STEAM-PUMP.

SPECIFICATION forming part of Letters Patent No. 400,787, dated April 2, 1889.-

Application filed June 8,1888. Serial No. 276,435. (No model.)

To all whOm it may concern.-

Be it known that I, SAMUEL J. PARKER, of Roch ester, in the county of Monroe and State of New York, have invented certain Improvements in Steam-Pumps, of which the following is a specification.

The aim of this invention is to provide a steam-pump of extreme simplicity, .in which all the operating parts shall be completely inclosed, the valve and the piston moved each by the direct action of the steam thereon, and in which there shall be contained no pistonrods, stuffing-boxes, or moving parts other than the piston and valve.

In the accompanying drawings, Figure 1 represents a vertical transverse section on the line 1 1 of Fig. 3, the parts being in position to produce the upstrokes of the piston. Fig. 2 is a vertical section on the line 2 2 of Figs. 1 and 3, passing vertically through the valve, and also showing the upper and lower ends of the cylinder in section. Fig. 3 is a horizontal section through the valve and one side of the cylinder on the line 3 3 of Fig. 1. Fig. d is a perspective view of the rocking valve. Fig. 5 is a vertical section on the line 4 4 of Fig. 3, through the lower end of the cylinder and a portion of the valve, showing the manner in which live steam is supplied to lift the piston. Fig. 6 is a similar view on the line 5 5 of Fig. 3, illustrating the delivery of steam to depress the piston.

Referring to the drawings, A represents a vertical cylinder having an upper steam-receiving portion, a, and a lower water portion or pump-cylinder, a, of relatively-small diameter. The entire cylinder a a may be cast complete in one piece; or the two sections may be formed separately and bolted together through external flanges, as shown in the drawings.

B represents a reciprocating piston mounted within the cylinder, its lower end, I), being in the form of a solid pump-plunger, to fit the lower end, a, of the cylinder, while its upper end is formed with two piston-heads, a and a fitting the upper or steam portion of the cylinder and separated from each other by the intervening steam-space a The upper end of the cylinder is closed by a cap, a, and the piston is depressed by steam admitted into the upper end of the cylinder between the top of the piston and this cap or lid.

The elevation of the piston is effected by means of steam admitted, as hereinafter described, into the annular space existing in the larger part of the cylinder around the plunger b and below the piston-head a On one side of the cylinder, integral therewith, is a horizonttl cylindrical valve chamber, 0, closed at its ends by caps or lids, and containing a valve, D, which is arranged to reciprocate horizontally in the direction of its axis, and also to receive a limited rotary motion about its axis.

The endwise motion of the valve is for the purpose of delivering steam into and out of the two ends of the cylinder alternately to effect the elevation and depression of the piston. Its rocking motion is for the purpose of delivering steam into and out of the ends of the valve-chamber to effect the endwise motion of the valve, as will hereinafter more fully appear.

The valve-is constructed, as shown in Fig. 4, of cylindrical form, with its central portion flattened or cut away on the rear side, as shown at d. It is provided near opposite ends with circumferential twin passages d and d opening at the rear end into the chamber or recess 61. The valve is also provided on its front face witha central groove or port, 01 It is further pro ided with two holes, (1 and (1 extending centrally inward from the two ends to points near the middle, and there emerging through the front face on opposite sides of the port 01 as shown.

The cylinder is provided with a port, a leading from the upper end downward through its walls and opening into the valve-chamber near one end, directly opposite the face of the valve, as shown in Figs. 2, 3, and 6. The cylinder is further provided with a port, a", leadin g from its lower steam-spaceupward'through the wall of the cylinder and emerging directly against the face of the valve at the opposite end from port 6L6, as shown in Figs. 2, 3, and 5.

The valve-chamber O is provided with a neck or throat, c, for the admission of live steam thereto directly against the back of the valve, and is also provided on the front side with a port, '0, opening from the face of the valve into the cylinder between the pistonheads a and (1 It is further provided, in its inner surface, with two grooves or ports, 0' and 0 extending from the steam-space in rear of the valve partly around the latter on opposite sides. An arm or tappet, E, is socured through the valve from the rear side, and projects beyond the same through the opening 0 into the cylinder between the heads a and a so that as the piston completes its upward and downward movements the two heads will strike the tappet alternately and cause the valve to rock around its horizontal axis. 011 one side the cylinder is provided, between the piston-heads a and a", with a steam exhaust opening, a.

The operation of the pump is as follows: Assume that the parts stand in the position shown in Figs. 1 and 3, the valve being tipped downward at the front and moved to the extreme right of its chamber. The live steam entering at 0 will pass through the port (1 of the valve and descend through the port a to the lower end of the steam-cylinder beneath the piston-head a and acting on the latter drive the piston upward. At the same time the exhaust-steam will escape from the upper end of the cylinder into the port a, and descendin g therethrough will pass through the port (1 in the face of the valve and thence through the port a into the interior of the cylinder, between the piston-heads a and a whence it will escape through the exhaustopening 7L7. \Vhile the upward movement of the cylinder continues, the port (1, opening into the right end of the valve-chamber, communicates at the opposite end with the exhaust-passage a, so that no steam is confined in the right end of the valve chamber against the end of the valve. The port (Z during this period communicates with the port 0 and receiving live steam therethrough conducts it into the valve-chambcr against the left end of the valve, whereby the valve is kept to its place at the right. As the piston completes its upward movement, its head a encountering the tappet E carries the same upward and rocks the valve around its horizontal axis until it assumes the reverse position, (shown in Fig. 6,) the effect of which is to-connect the port (1 with the exhaustpassagc, so that the live steam may escape from the left end of the valve-chamber, and at the same time to connect the port d" with the live-steam port c", so that live steam being admitted into the right end of the valve-chamber acts upon the valve and forces the same endwise to the left end of the chamber, whereupon live steam is admitted through the ports cl and a into the upper end of the cylinder, while the dead steam is permitted to exhaust from thelower end of the cylinder through the ports 0. (Z and c. The descending movement of the piston rocks the valve to its original position,

admitting steam to the left of the valve-chamher and causing the valve to slide again to the position shown in Fig. 3.

From the foregoing it will be observed that the piston acts positively to effect the rotary motion of the valve, that this rotary motion controls the admission and delivery of the steam by which the valve is moved endwise, and that the endwise motion controls the delivery ot' the steam to and from the alternate ends of the cylinder.

It will be perceived that under my construction the pump-piston is connected directly to the actuating steam-piston, so that connecting-rods or other intermediate parts are unnecessary. It will also be observed that the piston-plunger and the valve are completely inclosed, so that the pump may be located in accessible places, and, if desired, completely buried without in any manner atfecting or endangering the certainty of its action.

'When it is desired to produce a double-act ing pump, a second pump-piston B may be applied at the upper end of the steanrpiston, as shown in dotted lines in Fig. 1.

The pump-valves may be constructed and applied in any ordinary or suitable manner, my invention having no special relation thereto.

From motives of economy, and as insuring the greatest durability, I commonly cast the valve-chamber and the cylinder in one piece; but it is manifest that they may be constructed separately and bolted or otherwise fastened together.

I am aware that a valve-receiving longitudinal reciprocation by the direct action of the steam thereon has also been given an oscillating motion by means of devices extended therefrom to operating mechanism outside of the valve-chest. I am also aware that a slidevalve having only a reciprocating motion has been provided with an arm extended into the cylinder to be operated by the piston. I believe myself to be the first to provide avalve having both a reciprocating and an oscillating motion with an arm extending directly into the cylinder and operated by the piston, and the first to so construct and organize the parts as to admit of the arm being thus applied and operated in'a valve having the two motions above named.

Having thus described my invention, whatI claim is- 1. The cylinder and the transverse cylindrical valve-chest at its side, in combination with the double-headed piston in the cylinder, and the oscillating and longitudinally reciprocating valve mounted in the valvechamber and having the arm extended into the cylinder between the piston-heads, said cylinder and valve being provided with ports, substantially as shown, for admitting steam to and from the ends of the valve-chamber and the ends of the cylinder, whereby the operative parts are all brought within and protected by the cylinder and valve-chamber.

2. In a steam-pump, a cylinder having the central exhaustports, a double-headed piston therein,'a valve-chamber lying transversely against the side of the cylinder, a rocking and reciprocating valve mounted in said chamber and provided with an arm extending into the cylinder between the piston-heads, and also provided with steam-ports leading to its ends, a single exhaust-port in its face, and two independent live-steam ports around its ends, all operating in connection with corresponding ports in the cylinder and valve-chamber, as shown.

3. In a steam-p um p, the steam-cylinder and the pump-cylinder a, forming a continuation thereof at one end, in combination with the piston having one end fitted to the steam-cylinder and the other end projected in the form of a piston into the pump-cylinder, the transverse valvechamber opening into the steamcylinder, and the rocking and reciprocating valve provided with the arm or tappet, said moving parts being wholly inclosed within the cylinder and val ve-chamber.

at. The cylinder provided with the ports a and a and the central exhaust-port, and the transverse cylindrical valve-chamber located at the side of the cylinder and communicating centrally therewith, in combination with the double-headed piston in the eylindenand the oscillating and. longitudinally-reciprocating valve mounted in the valve-chamber and provided with the arm extending directly into the cylinder between the piston-heads, said valve provided with the ports leading from the steam-inlet to its ends, with the live-steam ports at d and the exhaust-port d 5. The steam-cylinder provided with the central exhaust-port, a and the cylindrical valve-chamber located transversely atthe side of the cylinder and communicating therewith by an opening, 0', in combination with the double-headed piston mounted in the cylinder, and the oscillating and reciprocating valve mounted in the valve-chamber and provided with the operating arm extended through the opening 0 into the cylinder, said valve and cylinder provided with ports, substantially as described, and said opening 0 adapted to permit the movement of the valveoperating arm therein, both longitudinally and transversely of the cylinder.

In testimony whereof I hereunto set my hand, this 6th day of April, 1888, in the pres ence of two attesting witnesses.

SAMUEL J. PARKER.

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