US517449A - Pumping machinery - Google Patents

Description

2 sheetsfisheet 1. A

R B T S O P M m d 0, M 0 m PUMPING MACHINERY.

4 AW 9 u 8 m 1 N CL 0 V 1 3 I W m P A a d w a a e lul M 6 A H t M n 1 v 0 ll mm .f MW a V ,x a m r .m 0 Wa f W z M 0m 1 4 M w 1 m v w 5 W C q N a w .NITE- l STA ES,

PATENT EEICE.

PUZMPINGQMACHINERIY.

SPECIFICATION forming part of Letters Patent No. 517,449, dated April 3, 1894.

Application filed January 2, 1892. Serial No. 416,900- (No model.)

T0 aZZ whom it may concern:

Be it known that I, MORRISON FOSTER, of l the borough of Sewickley, in the county of Allegheny and State of Pennsylvania, have lnvented a new and useful Improvement in Pumping Machinery, of which the following s a full, clear, and exact description, refer- I :gpce being had to the accompanying drawings,

arming part of this specification, in which Figure 1 represents a side elevation, and 1g. 2 a vertical longitudinal section of a pump onstructed on my new plan.

w Like symbols of reference indicate like 7 parts in each.

My invention relates to machinery or pumps for elevating water or other liquids. Two vertical tubular "pump plungers and working Ehambers are used, the plungers rising and falling alternately, and the object of my invention is to utilize the weight of the water or liquid in the one column as a counterpoise to the weight of liquid in the other column, and to thereby reduce to the minimum the amount of power necessary to raise a given quantity of liquid to a higher'level.

In the drawings the upright parts of the pump are shown broken, as they will necessarily be constructed of variable lengths according to the height the liquid is to be ele- Vated.

I will now proceed to describe my invention so that others skilled in the art can make and use the same. The pump is constructed of iron or other suitable material.

In the accompanying drawings A and B represent two vertical hollow plungers having hollow stems A B of smaller diameter. These are hung at either end of a cross-arm or rocking beam 0, which is pivoted at the center upon a working journal at the bearing of which is a stud fixed to a stationary stand-pipe D. The cross arm 0 is in this case bent at an angle of about seventy degrees. The stand pipe D rests upon and communicates at its lower end with the cross-pipe b and being closed at the top acts also as a fixed air chamber for regulating the action of the pump.

E and F are the working chambers of the pump, in which the plungers A--B work. These working chambers are connected by horizontal cross-pipes 6* 0 which are in turn connected by a perpendicular pipe cZ.

G and H are extension rods connected at top with the working journals e, f, at either end of the cross-arm or rocking beam 0 and at bottom with the working journals 9, h on the hollow stems A B of the plungers A, B. These extension rods cause the plungers to work up and down when G is operated by power applied to the handle I.

2', j, are check valves in the hollow plungers A. 13., smaller in area than the inside of the plungers. Ball valves are shown in the drawings. in, Z, are beveled stoppers or valves which fit in the .chamfered ends of the hollow plungers A, B; closing the latter respectively when either descends below cross-pipe 17. These stoppers are preferably of same area as that of the hollow plungers. The stoppers 70, Z, are fixed to the tops of stems m, 'n, which work perpendicularly in the chambers E, F, through holes in the bottom of cross-pipe o.

o, p, are heads upon the lower ends of the stems m, n, to prevent them from passing upward beyond the bottomsof the chambers E. F.

s, s, are spiral springs attached to the stop pers Z0, Z, to aid in raising them as the plungers A B, alternatelyrecede from them.

J is a supply valve through which the liquid to be elevated is admitted to the pump chambers.

t, u, are recessesinto which the stems m, n, sink when the stoppers is, Z, are depressed by the plungers A. B.

K is a cross-pipe attached to top of standpipe D (but not communicating therewith) having right angle extensions or branches '0, w, depending from either end of it; and an orifice w through which the elevated water. or liquid escapes. Into these depending pipes 12, w, the upper ends of the hollow stems A B of the plungers work'and by '0, w, are guided vertically.

The operation of these devices is as follows: The working chambers of the pump are placed in the water or liquid to be elevated so that the valve J shall be well. below the surface or indeed the cross-pipe b may be below the sur face. Hollow plunger A being at bottom of chamber E and plunger B at top of chamber F the handle I is depressed which causes the plunger A to rise and plunger B to move downward. I wish it to be observed that at this stage of operations plunger A rises much faster than plunger 13 falls. When plunger A has risen about two thirds of the way plunger B has fallen only about one third of the way. From this point plunger A rises more slowly than it did and plunger B descends more rapidly than it did so that when the bottom of plunger A' has reached the top of its course plunger Bis at the bottom of chamber F. In this and the manner of its accomplishment consists one of the features of my invention. The radius on which the journal pins 6 and f move at the lower part of their course is nearly on the perpendicular plane on which the plunger stems A B move while at the upperpart of their course it inclines rapidly away from that plane toward the central stand pipe D. The plungers A and 13 therefore move vertically much faster at the lower part of their course than at the upper part of it, whether ascending or descending. The suction produced by plunger A in rising causes the main valve J to open and the small valve j in plunger B to shut, the small valve i being already shut, and followed closely by the stopper 7a. A supply of liquid rushes in through valve J to fill the vacuum caused by the suction of plunger A. The stopper it rises with the plunger A until the former has reached the lower side ofthe cross-pipe b when it is prevented from rising farther by the head, 0, on the lower end of the stem m. Plunger A continues to rise, but slowly now, and the descending plunger B having reached the stopper I (which closes up the lower end of B) falls rapidly; valve J shuts and valve t' opens. The pressure of plunger B in its descent forces the liquid by way of pipes c, d, and I), up through valve i, the hollow plunger A and the hollow stem A As plunger 13 is now descending faster than A is rising,

. the pressure causes the surplus liquid to find exit at the top of the hollow stem A by way of the depending pipe 0 into the cross-pipe By raising the K and out at the orifice 0.

handle I the operation is reversed. Plunger B rises drawing in more liquid through valve J. Stopper Z rises to lower side of cross-pipe b. Plunger A descends, valve 7. shuts, stop: per closes the opens, and aided by the weight of liquid in A and A another quantity of liquid is forced by A out by way of pipes 0, cl, and b, valve j, hollow stem B pipes w and K and orifice 0c. The flow of liquid continues froma: as long as the handle I is operated.

It is not essential to use hollow sucker rods A b in order to operate this system of pumping liquids. It can be accomplished also by carrying the working chambers E. F. up above the full stroke of the tops of the plungers A. B. thence by a side extension pipe attached rigidly at top to cross pipe K and communieating therewith, conveying the elevated liquid to K; and operating the plungers through holes in the caps of the working chambers by means of ordinary solid sucker rods forked at the lower end where they attach to the plungers A. 13. so that the liquid may pass freely through the hollow plungers and out at the upper part of the working chambers.

I claim as my invention- In a pump, the combination, with two communicating cylinders, of valved plungers reciprocating therein, valves in said cylinders constructed to close the ports in said plungers when engaged thereby, moving and limiting devices applied to said valves whereby they engage the plnngers and move with the same during part of their stroke, all substantially as described, whereby each plunger acts during such portion of its stroke as aforcing plunger to force liquid through the other plunger.

MORRISON FOSTER.

Witnesses:

J os. P. RANKIN, P. P. KNAPP.

month of plunger A, valve Correction in Letters Patent 'No. 517,449,

It is hereby certified that in Letters Patent N 0. 517,449, granted April 3, 1894, upon the application of Morrison Foster, of Sewiekley, Pennsylvania, for an improvement in Pumping Machinery,?

and that the said Letters Patent should be read with this correction therein that the JNO. M. REYNOLDS,

- Assistant Secretary of the Interior. Gouutersigned JOHN S. SEY OUR,

Commissioner of Patents.

Images