US686939A - Pump. - Google Patents

Description

Patented nov. I9, mol. Hann.

P U Il P (Applicavtion tiled Mar. 6, 1900.)

(lo Model.)

JOSEPH HORN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO TIIE NAPPEL PUMP COMPANY, OF HARTFORD, CONNECTICUT, A CORPO- RATION OF CONNECTICUT.

PUMP.

SPECIFICATION forming part of Letters Patent No. 686,939, dated November 19, 1901.

Application tiled March 6,1900. Serial No. 7,502. (No model.)

To all whom t may concern:

Be it known that I, JOSEPH HORN, a citizen of the United States, and a resident of the city and county of Philadelphia, State of Pennsylvania, have invented certain new and useful y Improvements in Pumps, of which the followpumps; and the object of my invention is to furnish a means whereby the leather cups of the pistons may be at any time adjusted to bear more or less tightly against the barrel in order to increase the efficiency of the pump.

In the accompanying drawings, forming part of this specification, and in which similar letters of reference indicate similar parts throughout the several views, Figure 1 is partly a side and partly a central sectional elevation of my improved pump; Fig. 2, a section of Fig. l on lineAB; Fig. 3, asection of Fig. 1 on line C D; Fig. 4, a side elevation of the lower end of the pump; Fig. 5, a plan of wing-nut adapted to hold in place and operate the expanding-plug, which distende the cups of the pistongFig. 6, a plan of nut for securing the lower cup of piston to the piston-rod.

a is the barrel of my pump; b, the pistonrod; c, a cap closing the top of the barrel; d, a base which carries the lower end ofthe barrel. The lower part of the barrel a is tapered, as shown at e, and the base d is furnished with a correspondingly-tapered hole, in which the part e iits.

f is a plug closing and filling the tapered lower end of barrel o; g, a screw secured centrally to plug f and passing out through base d 5 h, nuts on screw g, which, together with the screw, prevent the barrel from being lifted from the base.

t' is a port opening through the tapered side of barrel a and up through and to the top of plug f'; j 7c, ports in the sides of base CZ.

In the drawings the plug closing the bottom of the barrel is shown constructed in two piecesff butin practice it can be constructed in a single piece, if desired.

The piston rod b is angular and passes through a hole in cap cof corresponding form. Hence by turning this rod the barrel o can be turned so as to bring the port i into register with either of the portsj 7o, suitable stops Z fm, carried by base d, and a stop n, carried by barrela, limiting the rotary movement of the barrel.

o is a stirrup to enable the pump to be held by the foot while it is being operated.

The pump may be operated to draw in liquid through one port, as j, and by turning the barrel to discharge it through the other port 7c. It may be operated to both lift and discharge through the same port or as a testpump, as desired.

The bottom of the pumpbarrel being tapered and entering and working in a tapered hole in base CZ, the former tends to grind a seat for itself in the latter, and after long use the joint between the barrel and seat is as tight as it was in the iirst place.

In order that the lower end of the pistonl may expel all the air or liquid from the barrel when at the bottom of its stroke, the lower or tapered end of the barrel o is completely filled with a plug f or is made solid, with the exception of the port t', the lower end of the piston being adapted to engage the top of this plug when at the bottom of its downward stroke.

In order to insure a satisfactory operation of the piston, it is constructed as follows: 1J q are leather cups placed back to back, the sides of the former extending upward and the sides of the latter extending downward. r is a stop carried by the piston-rod l), the lower end of which engages the cup p and the upper end of the Shanks of which is cylindrical and threaded and the lower end of which is conical iu form. 15 is a washer-nut carried on lower end of piston-rod b, which serves to force the bases of the cups p q together and against the base of the stop fr. u is a tapered washer placed small end downward on the stop r, the periphery of which engages the upper inner end of the sides of cup p, as 4 shown. The upper cup being out of contact with liquid and the upper end of the barrel IOO il @t lates as follows: The tapered washer u is placedl on stop r and engages the inner upper s'ides of the cup p and is held firmly in engagement therewith by the wing-nut QJ, which is carried by the threaded portion of the stop r. As the cup p wears, the washer is set farther down on the stop by screwing down the wing-nut, the tapered face of the washer forcing the cup farther and farther outward as it descends, this action being further increased by the conical form of the lower part of the stop, which When the washer is forced down over it increases its diameterby forcing it outwardly from the center.

The arrangement used upon the upper cup can, if desired, be also used in connection with the lower cup; but as this latter cup is in direct contact with the liquid it will usually be on its downward or operative stroke held ner sides of said cup, and a nut carried 0n.

said stop whereby said Washer may be driven inside said cup as and for the purposes set forth.

JOSEPH HORN. W'itnesses:

GEORGE W. SELTZER, CHARLES A. BUTTER.

It is hereby Certified that the name of the assignee in Letters Patent No. 686,939, granted November 19,1901,npon the application of Joseph Horn, of Philadelphia, Pennsylvania, for an improvement in Pumps, 4Was erroneously Written and printed The Nappel Pump Company, Whereas the said name should have been Written and printed The Noppel Pump Company; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the ease in the Patent Oii'iee.

Signed, eountersigned, and sealed this 3d day of December, A. D'., 1901.

[SEAL] F. L. CAMPBELL,

Assistant Secretary of the Interior.

Gountersigned F. 1. ALLEN,

Commissioner of Patents.

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