US548480A

US548480A - Steam-pump

Info

Publication number: US548480A
Authority: US
Publication date: 1895-10-22
Anticipated expiration: 1912-10-22

Description

(No Model.)

J. W. TEMPLIN.

STEAM PUMP.

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PATENT OFFICE.

JOHN WV. TEMPLIN, OF MARION, INDIANA.

STEAM-PUMP.

SPECIFICATION forming part of Letters Patent N o. 548,480, dated October 22, 1895. Application ned February ze, 1395. 'serial No. 539,823. (No modem To a/ZZ whom it may concern:

Be it known that I, JOHN W. TEMPLIN, of Marion, in the county of Grant and State of Indiana, have invented new and useful Improvements in Steam-Pu mps and I do hereby declare the following to be a full, clear, and eX- act description of said invention, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to steam-pumps or steam pumping-engines, and bas particular reference to the valve mechanism thereof.

In the form of steam-pumps most commonly employed the pistons of the steam and water cylinders are connected to a single rod, which carries tappets adapted to strike a lever or levers, which through certain slide-rods or other connections operate the valves of the steam-cylinder.

The object of the present invention is the production of a simple and durable valve mechanism for the steam-cylinder of this type of engine, and in which the initial movement of the valve in either direction shall be imparted by the steam-piston itself, while the completion of the movement initiated bythe piston shall be quickly caused by the steam after it has done its work in the main steamcylinder.

To these ends the invention consists in the construction and combination of parts substantially as hereinafter described and claimed.

In the drawings, Figure l is a vertical longi- .tudinal section of the steam-cylinder of a illustrating the ports of the cylindrical valve. Fig. 6 is a detail sectional view online 6 6 of Fig. 1.

The two Figs. 4. and 5, if out out of cardboard, would serve to illustrate the cut-oit action of the valve on its seat.

Parts which appear in several figures of the drawings are indicated by similar reference letters in said iigures.

A indicates the steam-cylinder of a steam pumping'engine, a the piston-rod thereof, and a the piston, all these parts being of the ordinary or any preferred construction.

B indicates the valve-chest, which is internally cylindrical and has a fiat under side, as indicated at b, Fig. 2, to fit a similarly-flattened portion of the steam-cylinderA, to which it is bolted. The valve-chest has a live-steam inlet i and an exhaust-outlet e, and contains the cylindrical valve O, which is free to slide longitudinally in the said chest, each end of the valve having a suitable packing-ring, as indicated at c, in order that the valve may be moved by the force of steam between the ends of the chest and the valve, as hereinafter described.

Near each end of the valve-seat is a crossshaped opening, the arms of which form ports i4 e6 for steam, as presently described, 4While the central elongated part or slot b is to permit the passage of the arm or tappet one of which is secured to the under side of the valve Vnear each end thereof by a screw d', passing through the valve and into the base of the tappet. Thesetwo tappets might be Vintegral with the valve, so far as the operation is concerned, but for convenience in assembling the parts they are detachable, as just described. In order that the said screws may be accessible, suitable holes are made in the upper side of the valve chest or casing and closed by screw-plugs d2, as indicated in Fig. i. No steam passes through the slots b', even if the bases of the tappets do not closely tit the slots, for the reason that said slots are at all times covered by the lower central part of the valve, the ports being entirely aside from the slots b', which are in the line of reciprocation of the arms or tappets, as will be readily understood by a comparison of Figs. fi and 5. Therefore all the steam is confined in passing to the ports formed in the valve itself and none can escape through the said slots. Between each slot b and the end of the valve-seat is a shallow depression or steam-port f, and al similar but larger depression or port gis formed at one side of the port f on what may be termed the exhaust side of the longitudinal center of the seat.

The valve C is cored out to form an upper steam-chamber t" and a lower steam-chamber i2, which two chambers are permanently connected by the passage i3, and being always supplied with live steam balance each other. The chamber 2, as the valve reciprocates, communicates alternately with the two ports i* t4 of the valve-seat and supplies live steam to the steam-cylinder to operate the pump. The valve is also cored out nearly its entire length on the other side of its lower central portion, as at c', and this coi-ing communicates with the exterior of the valve at c2 e3 el e5, forming ports for the exhaust-steam. The ports e6 in the valve-seat form exhaust-ports from the steam-cylinder, and as the valve reciprocates the two ports e5 communicate alternately with the ports e2 e5, so that the exhaust-steam may find its outlet through the coring e and through thc ports c3701' e4 to the outlet e.

At each extreme end of the valve-chest is a slight enlargement 7L, and a small port h leads diagonally from the live-steam chamber through each end of the valve to the under side thereof close to its end, as indicated in Fig. l.

The supply of steam to the cylinder and the exhaust therefrom as the valve reciprocates being evident from the foregoing description, taken in connection with the drawings, l will now describe the operation of the valve, the initial movement of which is imparted by the contact of the piston with the tappets d d alternately, as will also be readily understood.

The piston having moved to the left, as in Fig. l, to an extent so as to partially move the valve 'in the same direction, the steam in the cylinder A passes through the portfat the right and acts against that end of the valve to complete its movement, While the exhaust at the left-hand end of the valve is taking place through the port g at that end and the port e2 of the valve. At the montent when the lower end of the port 7L clears the va1ve-seat so as to admit live steam to the enlargement 7L steam passes into said enlargement, so as to cushion the movement of the valve. During this operation of the valve the ports for the admission of live steam to the cylinder A and the exhaust therefrom have been shifted, and the piston moves its full stroke to the rightandlnitiates the reverse movement of the valve by coming in contact with the tappet d, when the same operation as above stated will be repeated, but in the opposite direction.

The cylindrical valve, as shown, has a tendency to constantly preserve a perfect fit on its seat, for the reason that as wear occurs the weight of the Valve and the pressure of the steam on it will keep it in smooth contact with the seat; and since all the ports except the main inlet at 1l are below the horizontal plane of the center of the valve and seat there can be a great deal of wear before the valve will permit any leakage.

Having thus described my invention, what I claimisl. Asteam pump comprising in its construction a steam cylinder and a closed valve seat therefor, a single valve fitted to said seat, said valve having suitable inlet and outlet ports, and having arms or tappets extendingr into the path of movement of the piston in the cylinder, the ports in the valve and seat being entirely aside from the line of reciprocation of the tappets.

2. A steam pump comprising in its construction a steam cylinder and a closed valve chest therefor, a single balanced valve fitted to said chest and having packed ends and having steam inlet and outlet ports therethrough, arms or tappets extending from the valve into the path of movement of the piston in the cylinder, steam ports from the cylinder to the valve chest beyond the ends of the valve, and exhaust ports from the ends of the valve chest through the valve, the ports in the valve and chest being entirely aside from the line of reciprocation of the tappets.

3. Asteam pump comprisingin its construction a steam cylinder and a closed valve chest therefor, a single valve fitted to said chest and having suitable inlet and outlet ports, rigid arms or tappets extending from the valve into the path of movement of the piston in the cylinder, said chest having an enlargement at each end, and the valve having a small live steam port leading to said enlargement.

4. The combination with the slotted valve chest having ports i4 e6, of the cylindrical Valve C having the elongated steam chamber i2 andthe coring e having openings or ports e2, e3, e4, e5, and the arms or tappets d d secured to the valve and extending through the slots of the valve chest.

5. The combination with the valve chest having the slots b', the ports e, i4 e, and the shallow portsfg, of the valve O having the connected chambers d'1? and the coring e having ports' e2 e3 e4 e5.

6. The combination with the valve chest having the enlargement h and the ports e @"1 eff and g, of the valveC having the connected chambers t" z2, the coring e having the ports e2 e3 e4 e5, andthe ports h.

'7. A steam pump comprising in its construction a steam cylinder and a closed cylindrical valve chest therefor, a single cylindrical valve fitted to said chest and having suitable inlet and outlet ports below the horizontal plane of its center, and arms or tappets extending from the valve into the path of movement of the piston in the steam cylinder, the ports in the chest and valve being entirely aside from the line of reciprocation of the tappets.

Tn testimony whereof I affix my signature in presence of two subscribing witnesses.

JOHN W. TEMPLIN.

Witnesses:

GEO. L. CLARK, HORACE G. SEITZ.

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