US120841A

US120841A - Improvement in pumps

Info

Publication number: US120841A
Authority: US
Publication date: 1871-11-14
Anticipated expiration: 1888-11-14

Description

NORMANW. WHEELER.

`lmpr0vemen1in Pumps.

Patented Nqv.14,1-871.

Wl'nesse.

UNITED STATES PATENT OEEIGE.

NORMAN W. WHEELER, OF MORRISTOWN, NEW JERSEY.

IMPROVEMENT IN PUMPS.

Speciiication forming part of Letters Patent No. 120,841, dated November 14, 1871.

To all whom t may concern:

Be it known that I, N oRMAN W. WHEELER, of Morristown, in the county of Morrisv and State of New Jersey, have invented certain Improvements in Boiler-Feeding Devices, of which the following is a specification:

This invention consists essentially of a feedpump, to be actuated by the play of plus and minus pressures to which liquid is subjected in a double or double-acting steam or other pump.

Figure 1 is a sectional elevation of a machine embodying my invention, and Fig. 2 is an end elevation of the same.

In the drawing forming a part of this specification, a is a barrel, 'and d a plunger tting reasonably tight-therein. e is a ram attached to and of less diameter than the plunger d, iitting reasonably tight in the barrel b, and Working through the chamber c. h is a recess, so formed that when the end of c reaches and enters it a Water-cushion will be formed to arrest the motion of d and e. The recess q and projection f upon the plunger e make a water-cushion for the arrest of the motion of d and e when moving toward the left. 'i and j are pipes connecting-by the passages w and y with the ends ofthe barrel a. The pipes t' and j are to be connected by means of the lianges c v to the two ends of the steam or other pump above the receiving-valves and below the delivery-valves-that is to say, in such a manner that when plus pressure exists in one end of the pump-barrel or in one working-vessel and minus pressure in the other, plus pressure will also exist, say to the right of d, and minus pressure to the left of d, within the barrel a, and vice versa, which condition of pressure Will, resistances permitting, cause the plunger d and ram e to traverse from right to left, and from left to right, alternately, in response to the play and change of plus and minus pressures in the pump from which the motions are to be derived. The chamber la communicates, as shown, with the right end of the barrel a, and above it is placed the clack-valve Zin its chamber u, a communication with the chamber c being effected by the fm n, so that when the ram e is moved toward the left Water will be drawn into c from a. ois a clack-valve in its. chamber t, and p is a pipe which must connect the chamber t with the steamgenerator, so that when the ram e is moved toward the right Water contained in the chamber c will be forced into the generator. It is obvious that the pressure attainable in the pipe p is nearly equal to the plus pressure of the actuating pump, multiplied by the area of d plus the minus pressure, multiplied by the area ofd (minus the area of e) divided by the area of e,- and as the area of e is less than that of (l the pressure existing in pmay exceed that existing in the pipes t' or j. Should it happen that the Water passing through the actuating pump is not iit for feed-Water it will be well to close the passage between the barrel c and chamber 7c and attach to la a pipe leading to a body of purer Water.

I claim- The combination ofthe barrels a and b, plunger d, and ram e with the pipes i and j and valves l and o, substantially in the manner and forthe purposes described.

NORMAN W. WHEELER.