US67592A - Eudolph schmidt - Google Patents

Description

R. SGHMIDTQ STEAM PUMP.

Patented Aug. 6, 1867.

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RUDOLPH SCHMIDT, OF NEW YORK, N. Y;

I Letters Patent No. 67,592, dated Alt- Q3816, 1867.

IMPROVEMENT IN STEAM-PUMPS.

TO ALL WHOM IT MAY CONCERN: 7

Be it known that I, RunoLrn SCHMIDT, of the city, county, and State of New York, have invented a new and improved Steam-Pump; and I do hereby declare thatthe following is a full, clear, and exact description thereoflwhich will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification. v I i This invention relates to the device by which a pump for raising water is combinedwith and operated by a sie 1m engine; 'and it consists in the arrangement oi pistons of 'diiierent sizes upon the rodsliding in the steamchest, the vertical rod provided with collars and operated from piston of the cylinder, wherebythe ports for the admission and exhaust of steam are opened and closed; and in the arrangement of the stufiing-box, whereby the cylinders are separated. I

Figure 1 represents a vertical section-of the steam-pump through the line a: not fig. 2.

Figure 2 is a horizontal section of fig. '1, through the line y 3 Figure 3 is a vertical section of fig. 2, through the line-z 2.

Similar letters of reference indicate likeparts. I

A represents, the steam-cylinder; B'the water or pump-cylinder. C is the steam-piston, andD the-pumpplunger. E is the piston and plunger-rod. F is the stufiing-box around the plungerl). a a are watervalves which regulate the admission and discharg'e'of he water. The piston C is driven in ,the ordinary way, by taking steam in the ends of the cylinder alternately, and the piston-rod being attached to the plunger, it will be seen that the plunger has the same stroke as the piston. When the plunger is driven down the valve a will rise for the water to pass through, and when the plunger is drawn up thevalve a will rise for the water to enter. The stufling-box F is screwed into the chamber around the plunger, as seen in the drawing, and it will be noticed that there are two small holes or recesses in the top of it. On the bottom of the piston (lthere are two pins, which will fit into-the holes when the piston is down, thus-locking the smiling-b0); and piston together. 0n the bottom of the plunger there is a square at c. The bottom of the plunger-cylinder, marked d,.is mova ble, so that by taking it oil a key-wrench may be put upon the square 0, by which the plunger and piston may be turned round, and in this way the stalling-box is screwed down when it requires tightening. Thesame thing can be done by turning the piston-rod. The stufiing-box can be taken out or put in place at any time by taking oil the cylinder-head and removing the rod with the piston and plunger. The device by which the steam is admitted to and exhausted from the steam-cylinder is peculiar in its construction, as seen in figs. 2 and 3. As seen in fig. 1, steamis entering the bottom of the cylinder under the piston, through an aperture made through the head and the shell of the cylinder, which is seen in dotted lines, and is indicated by the arrow: From the top of the cylinder the steam is exhausting through the cylinder-head, as indicated by the arrow. The steamchest is marked G, and it is attached directly to the cylinder-head of the engine. It is cylindrical in shape, and without valves, but with a'rod which has three pistons attached to it, which slide in the chest, covering and uncovering the steam-"ports or apertures so that the steam is admitted to and exhausted from-the cylinder, according to the movement of the pistons in the chest. These pistons are marked e e and e. It will be noticed that the diameter of the pistons e e is greater than that of e. These pistons, with the rod, are moved back and forth in the chest by the pressure of the steam. h, fig. l, is a vertical rod, which has collars on its upper portion marked This rod is raised and lowered byafcrked arm, marked f, which is attached to the pistonrod marked E, and moves up and down with it. It is attached to the piston-rod by a ring marked J. On the lower end of the rod 11 there is a piston valve, m, which opens and closes an aperture, (seen in the drawing,) which passes from the chamber n, in which the piston m moves, to the steam-chest G. This aperture is seen in dotted lines in fig. 2. This chamber n. is also connected with the end of the steam-chest, as seen in the same figure. When the piston-rod E rises, the red It is raised, which allows the steam to exhaust from the upper end of the cylinder, by admitting steam into the end of the steam-chest behind the outer pistone, which drives the pistons to the other end of the steam-chest thereby opening the exhaust-port la, from whence the steam escapes, as seen inthe drawing. The steam being admitted into the steam-chest always between the middle pisto'ne and the small piston e, the piston-valves are'driven back, when the rod h descends, and the communication with the steam-chest and the chamber n is cut of and the exhaust-port opened. The difl'erence in the areas of the pistons e and a efi ots this, for were there no difference the pressure would be balanced and thepistons would stand still. when they are thus thrown back the steam is exhaust-ed from the bottom end of the cylinder through another aperture seen in the drawing at o, the exhaust pipe being attached at I am aware that the apertures for the admission and discharge of water in water engines have been opened and closed by sliding pistonwalyes before, but I am not aware that such piston-val'yes have heretofore been moved by the pressure of steam opc-ratingupon such p'istons when the movement depended upon a difference in .the'areas of such pistons. I am also. aware that the plunger may bepacke d by rings or by other means equivalent to the smiling-box, but I deem the stu'fiing-box substantially as shown the best'method.

What I claim as new, and desire to secure by Letters Patent, is-

1. The arrangement of the pistons e e and small piston 0' upon the-rod sliding in the steam-chest G, the vertical 'rod 7;, with collars ii, operated from the piston D, substantially as herein shown and described, whereby the ports for the admission and exhaust of steam are opened and closed as and for the purpose specified.

' 2. The arrangement of the shilling-box F, whereby the two cylinders are separated, substantially as shown and described.

R. SCHMIDT.

Witnesses:

WM. F. McNAMARA, ALEX. F. Ron nn rs.

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