US697019A

US697019A - Rotating-cylinder pump.

Info

Publication number: US697019A
Application number: US376900A
Authority: US
Inventors: Robert Richardson
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-02-03
Filing date: 1900-02-03
Publication date: 1902-04-08
Anticipated expiration: 1919-04-08

Description

No. 697,0I9. Patented :Apr. 8, I902.

R. 'mcummson.

ROTATING CYLINDER PUMP.

- (Application filed Feb. 3, 1900. r (No Model.) 5 Sheets-Sheet I.

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Nb. 697,0l9. Patented Apr. 3, I902. n. RICHARDSON.

ROTATING CYLINDER PUMP.

(Applicatibn filed Feb. 3. IGOR) (No Model.) 5Sheets-Sheet 2.

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No. 697,019. ;P atented'Apr.8, I902.

R. RICHARDSON. ROTATING CYLINDER PUMP.

(Application filed Feb. 3, 1900.)

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I Patented Apr. 8,1902. R. RICHARDSON. BOTATINGDGYLINDER PUMP.

(Application filed E51). :3, 1900.

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No. 697,0l9.

(No Model.)-

in. 97,019. Patented Apr. 8, I902. R. RICHARDSON.- RUTATING CYLINDER PUMP.

(Apfilication filed Feb. 3, i900.

UNTTn-n STATES PATENT OFFICE.

ROBERT RICHARDSON, OF GLASGOW, SCOTLAND.

ROTATING-CYLINDER PUMP.

SPECIFICATION forming part of Letters Patent No. 697,019, dated April 8, 1902.

Application filed February 3,1900. Serial No. 8,769. (No model.)

To all whom it may concern:

Be it known that 1, ROBERT RICHARDSON, a citizen of the United Kingdom of Great Britain and Ireland,residing at 16 Jamieson street, Govanhill, Glasgow, Scotland, have invented certain new and useful Improvements in R0- tating-Cylinder Pumps, (which have been patented in Great Britain on the 5th day of July, 1899, No. 13,866,) of which the following is a specification.

This invention relates to an improved construction of pump wherein a number of cylinders are disposed in approximately radial lines around a central boss, on which they are cast or fitted to rotate therewith upon a fixed shaft or center, through which the inlet and outlet passages for the water or other fluid are formed.

The invention is illustrated by the accompanying drawings, Figure 1 being an elevation with the front plate of the casing re moved and showing part of the pump in section. Fig. 2 is a vertical section at right angles to Fig. 1; and Fig. 3 is a horizontal section on the line :0 m, Fig. 2. Fig. 4 is a view corresponding to Fig. 1, and-Fig. 5 a view corresponding to Fig. 2, of a modification in which two series of cylinders are arranged along the central boss side by side, the center lines of one series being equidistant between the other series, so as to give a tencylinder effect. Figs. 6 and 7 are views corresponding to Figs. 1 and 2, but showing the outer casing dispensed with and a light box substituted.

As shown by the drawings, a number of cylinders A are formed in a single casting or carrier, which is fitted on or has a boss A formed integral therewith. The inner ends of the cylinders A are formed with ports A passing through the boss A and preferably through an inner liner B, of brass, lignumvitae, or other material, revolvingupon a fixed central stud H, secured to the casing I, while the outer ends are open and are fitted with pistons or plungers 0, having connecting-rods D, whose ends are attached to a disk E, (or pair of disks,) bolted together, as in the modifications shown, carried by a driving-shaft F, which is eccentric to that whereon the boss revolves. The disk or disks E and cylinder casting or carrier are connected by cranked coupling-rods G, so that they rotate in unison and a true relation is maintained between them, while reciprocating motion is imparted to the several pistons 0 through their connecting-rods D, owing to the disk or disks E and cylindercasting rotating on different centers. In the fixed central stud H inlet and discharge passages H and H are formed longitudinally, and ports H H, separated from each other by bridge-pieces H H communicate, respectively, with the inlet and discharge passages. The ports A in the cylinder-carrier boss communicate alternately with the inlet and discharge ports H H, so that the Water from the inlet H is forced by the action of the pistons 0 through the discharge-passage H In lieu of the connecting-rods D, attached to the disk or disks E, other means may be employed for reciprocating the pistons or plungers G.

The fixed central stud H, on which the cylinder-casting revolves, is preferably placed horizontally, and the inlet-port H for the water is formed around thelower side, while the outlet-port H is formed at the upper part of the center, the center being thus reduced to a web H separating the inlet and discharge passages. In order that a Water-tight joint may be maintained notwithstanding wear of the liner B and central stud H, the discharge or outlet H is made much smaller than the inlet, and the liner B bears on a portion of the fixed central stud composed of the two bridge-pieces 11 H the portion embraced by the outer edges of these bridge-pieces preferably extending only around about a fourth of the circumference and placed in such a position relatively to the cylinder-carrier as to be pressed upon by said casting or its liner during the most effective portion of the 'pister is allowed to return to the inlet-passage H and the full stroke is not utilized, but only a portion, which may be taken at the most effective travel of the pistons or plungers C, and in order to permit of the return of the water the bridge-pieces H H which separate the inlet and discharge ports I-I H are preferablymade slightlysmaller than the ports A leading to the cylinder ends. The flow of water from the cylinders is thus not at any time entirely shut off,and strain upon the pump is consequently avoided.

The driving-shaft F may be pressed by a spring J from its outer end, so as to press against the cylinder-boss A, which in turn bears against an enlarged part of the fixed central stud H, so as to prevent leakage of the inlet H, or the cylinder-boss may bear against a separate boss K, surrounding the fixed central stud H and to which the latter is secured, this boss K being provided in order that the fixed center may be more readily removable without disturbing the other' parts of the pump.

The cylinders are intended to be rotated at a high speed, and the number of cylinders (of which there must be not less than five, as shown at Figs. 1, 2, and 3, and may bea multiple of five, as shown at Figs.4 and 5) should be such as to give a continuous uniform fiow and entirely do away with pulsation. Owing to the high speed it may be found necessary to force the water into the inlet H, and where pressure is not available a centrifugal pump may be fitted on the driving-spindle F, the discharge from which would go to the inlet H of the improved rotating pump.

The outer casing I may be dispensed with and a light box M, preferably formed by the disks, as shown at Figs. 6 and 7, be substituted, the end of the central stud H (and also the liner 1:"- when such is used) being bored to admit free passage of the iulet water which would then fill the box. Any escape of Water on the pressure side would thus pass into the box and thence into the inlet-passage, where it would be drawn into and finally expelled from the cylinder.

Having now described the inveution,-what I claim, and desire to secure by Letters Patent, is-

1. A rotating-cylinder pump consisting of not less than five cylinders disposed radially around a central hollow boss, port-s communicatin g with the bottoms of the cylinders and the'center of the boss, a fixed central stud upon which the boss of the cylinder casting or carrier revolves, said central stud having a bearing-surface of about one-fourth of its circumference which as the surfaces wear automatically maintains a fluid-tight joint and thus prevents leakage between the fixed cen ter and the cylinder-boss without the aid of packing, inlet and outlet passages in said fixed central stud for the water or other liquid, ports communicatingperiodically with the ports in the bottom of thecylinders,pistons in said cylinders and rods connecting the pistons with a disk or disks driven by a shaft eccentric to the fixed central stud upon which the cylindercarrier revolves, substantially as described.

2. In a rotating-cylinder pump having a rotating cylinder-carrier on which five cylinders or a multiple of five cylinders are disposed, and a disk or disks to which the cylinder-plungers are attached rotating eccentrically to said cylinder-carrier, a fixed central stud having inlet and outlet passages and ports and a bearing-surface consisting of the bridge-pieces between which the outlet-port is situated, said bearing-surface extending around about one-fourth of the periphery of the central stud, and being placed in such a position relatively to the cylinder-carrier as to be pressed upon by said carrier or its liner during the most effective portion of the pistonstroke whereby leakage between the fixed center and the boss of the cylinder-castingis prevented, substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

ROBERT RICHARDSON.

Witnesses:

WALLACE FAIRWEATHER, J NO. ARMSTRONG, J um.