US157863A - Improvement in valves for steam vacuum-pumps - Google Patents

Description

H. NYE. VaIv-as for Steam `Vacuum-Pumps Patented Dec.15,1874.

lNITED STATES4 GEORGE H. NYE, OF MONMOUTH, ILLINOIS.

IMPROVEMENT IN'VALVES FOR STEAM VACUUM-PUMPS.

Specification forming part of Letters Patent No. 157,863, dated December 15, 1874; application filed October 13, 1874.

To all whom it may concern:

Be it known that I, GEORGE H. NYE, of Monmouth, in the county of Warren and State of Illinois, have invented a new and useful Improvement in Steam Vacuum-Pumps, of which the following is a specication:

The object of the present invention is to improve the pumps patented to me November 5, 1872. The nature of the improvement consists in a steam-cylinder placed on the top of the pump-cylinders, and provided with a reciprocating double-cup valve, which, when under a proper force of steam, moves back and forth in its cylinder, and alternately conducts steam, by means of suitable ports, into the pump-cylinders, whereby water is forced out of one pump-cylinder, while a vacuum is produced in the other cylinder, and vice-versa; the mechanism in the bottom of the pumpcylinders (similar 'to that in the patent referred to) being hereinafter fully described and shown.

In the drawings, Figure 1 is a vertical sec tional elevation of my improvement as applied to the pump-cylinders of my patents dated November 5, 1872, and numbered 132,732 and 132,731; Fig. 2, an enlarged horizontal section of the valve-cylinder, taken on line cc, Fig. l; Fig. 3, a plan view of the base on which the steam-cylinders are placed, showing the position of the pipes, ducts, and valves therein 5 also the position of said cylinders, in section, on the base.

A A' represent the pump-cylinders, which are constructed of iron, of suitable strength to withstand the required pressure of steam, and are bolted fast to a base, B, as in said patent. On top of these cylinders is placed another cylinder', 1, which is held in position by means of bolts 2, put through the ends of the conduit-pipes 3 3', Which are cast solid to the cylinder l, and communicate with it. In this cylinder 1 is placed a double-cupped steam-valve 4 4', which is provided with a series of ports, 5 5', communicating with annular grooves 6 on the inside of the cylinder 1. The rod 7, connecting the cups 4 4', is provided with two flanges, 8, between which an arm, 10, on shaft 9 operates, a wheel, 11, being fastened to said shaft for the convenience of operating the valve outsidei of the cylinder 1. There lis also leading from the cylinder 1 and into conduit-pipes 3 ducts 12,

for a purpose stated in the operation. An air-chamber or condenser, H h, is supported by the base B, and communicates with the steam-cylinders A A' by means of ducts I I' in the base B. i i' are valves on the ends of the ducts in the enlarged lower end of the pipe h. J J' are smaller ducts, also leading from the cylinders A A' to the same enlarged part. T T' are pipes leading from the cylinders A A' to the discharge-pipe S, and Gis the water-inlet pipe, leading by ducts g g', through valves g" and g, into cylinders A A', as in said patent. A

The operation is as follows: The pump-cylinders A Al are primed and started in the ordinary manner known to the art. The double-cup valve 4 4' being so set as to bring the ports 5 of cup 4 over the conduit-pipe 3', steam drives the Water out of cylinder A, and at the same time forces so much water into the condenser II It as will compress the air therein to a corresponding pressure to that of the steam in the cylinder A. As soon as the Water is all forced from the cylinder A through duct T and valve t, the steam comes under the water in passage T, Fig. 3, reducing the steam-pressure in cylinder A. At the same time the air in condenser H h drives the water back through duct J. Up to the time of this partial exhaust the valve 4 4 remains stationary; but now such exhaust has relieved the pressure from the outer end of cup 4 by means of duct 12. The force of steam now moves the valve 4 4' so as to bring ports 5' over conduit-pipe 3 and close conduit 3', and the operation of cylinder A' is the same as in cylinder A, causing a continuous ow of water through pipe S.

To clean the cylinder' l of sand or other substance, turn the wheel 1l back and forth, giving the valve a reciprocating movement.

I claim as new- A valve consisting of rod 7, flanges 8, oups 4 4', with ports 5 5' through them, in combination with cylinder I, provided with annular grooves 6, shaft 9, arm lO, and wheel 11, conduit-pipes 3 3', and ducts 12, arranged to operate a steam vacuumpump, substantially as described.

GEORGE H. NYE. Witnesses:

JOHN H. ELLIOTT, G. L. GHAPIN.

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