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Publication numberUS660136 A
Publication typeGrant
Publication dateOct 23, 1900
Filing dateJan 16, 1900
Priority dateJan 16, 1900
Publication numberUS 660136 A, US 660136A, US-A-660136, US660136 A, US660136A
InventorsHermann Welch
Original AssigneeHermann Welch
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 660136 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

' P'tented Oct. 23,1900.


F U M P (Application and un. 1e, 1900.)

(No Model.)

1m: noms vrrcns co. vno'mumn. wAsHmoroN. n, c:4

' which the piston-rod works.



SPECIFICATION forming part of Letters Patent No. 660,136, dated Octobef 23, 1900.

Application filed January 16,1900. Serial No. 1,669. (No model.)

To d/ZZ whom t may concern:

Be it known that I, HERMANN WELCH, (whose post-office address is Osceola, Nebraska,) a citizen of the United States, residing at Osceola, in the county of Polk and State of Nebraska, have invented certainr new and usefulmprovements in Pumps; andIdohereby declare the following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in pumps for use in deep wells', and the main object of the invention is to produce a pump of very simple construction which will be very effective in its operation, wherein all the work of lifting the water is done on the downstroke of the piston and no water is lifted on the upstroke thereof, and wherein the weight of the operating parts assists in raising the water, and water will be drawn into the cylinder as water is forced out at a suitable discharge or surface pipe.

The invention consists in certain novel constructions, combinations, and arrangements of parts, as will be hereinafter'described and claimed.

In the accompanying drawings, Figure lis a vertical longitudinal section through my improved pump, the central portion being broken out to shorten the figure.

tion, showing the pump arranged for use as a force-pump, the same parts being broken out; and Fig. 3 is a detail View showing a' modified form of the piston and of the means of converting the pump into a force-pump.

A in the drawings represents a cylinder' which is closed at its bottom and top, in which works a piston-rod B, which is hollow and' carries a piston O, which closely lits the said= cylinder. The top or head of the cylinder may be provided with a stuffing-box, through The piston O is provided with a downwardly-opening valve or valves c. The hollow piston-rod B extends above the level of the pump-platform a suitable distance and has connected to it a suitable handle O for raising and lowering the same. A spring, as D, surrounds the pistonrod and is interposed between a collar b, provided on said rod and the pump-platform, so

Fig. 2 is a' view, partly in section and partly in eleva-v the upper surface of the pump-platform. A

discharge-pipe extends from the lower end of the pum p-cylinder A,on the outside of said cylinder, to a poi-nt in the outer casing E, as at e3, by means of which pipe F water is forced into said casing E on the downstroke of the piston, as shown vin Fig. l. The discharge-pipe F may be provided with a valve f, which is opened as the pistou descends, so that the water may be forced into said pipe and is automatically closed as the piston is raised, so as to support the column of water contained in said pipe. A supply or section pipe G extends from a point near the upper end of the cylinder and on the outside thereof into the water in the well or cistern and is provided with an upwardly-opening valve g, which valve as the piston descends admits water into the cylinder above the valves c, which valves are closed as the piston descends. The valve g in the supply-pipe Gis closed as the piston ascends and the valves e are opened, so that the water which was admitted into the piston above the valves c will be permitted to pass through the ports in the piston into that part of the cylinder below the piston, and as the piston again descends, the valves c being closed, the water below the vpiston will be forced into the hollow pistonrod E and also out through the su pply-pipe F.

'The construction of the pump as thus far described is, it will be observed, a single-acting pump, which does all its work of lifting water onthe downstroke of the pistonand rod, and no water is lifted on the upstroke thereof, and I regard this as an important feature of my invention, and I maintain this principle throughout all the constructions illustrated in the drawings and which will be y hereinafter described.

:i 6mes To convert the pump into a force-pump, it is simply necessary to' close the upper end of the hollow piston-rod and disconnect the same from the discharge-spout, as shown in Fig. 2, and employ only the discharge-pipe F' asthe means of discharging Water from the cylinder, said pipe being extended above the pump:.

platform and made with or connected to a spout F2. In said Fig. 2 the upper end of the hollow piston-rod is closed by means of a cap I, which also serves as the upper bearing of the spring D. The same result can be accomplished by providing a plug .I in'thehol` low piston-rod, as clearly shown inaFigB.` It will be observed that the weight of the rod and piston in descending, which is considerable, will assist in raising the Water, and that on the u pstroke of the rod no water whatever is lifted, and the lifting of the weight of the rod and piston is greatl-y facilitated by the spring D.

In Fig. 3 of the drawings I have showna.

slightly-modified construction as to the loca-` tionof the valves in that the valves'f fortadmitting water into the cylinder are located in` the piston-rod,`as at c c', instead of in the piston. The operation of the valvesis precisely the same as in Figs. l and 2. Thevalvesc" c' open downwardly, and as the piston androd descend the valves are closed, and as the piston and rod ascend the valves are opened and Water is admitted throughthe same intothe lower part of the cylinder beneath the piston..

Being simple in its construction and` operation and no complicated4 parts being, em-

ployed, there is little liability of the pump getting out of order, and when necessary re-V pairs can be readily made.`

From the foregoing it willY be seen thatI have provided a combination-pump, which can be worked as a force-pump or not, as the convenience of the operator orthe exigencies of the case may require. Thepump combines compactness, rigidity, and great lifting:

capacity for the amount of'energy expended in operating the same.

Having non7 described my invention,-.What

I claim as new, and desire to secure by Letters l. A pump, comprising in its construction a l suitable cylinder closed at its bottomand top.

and located above the Water in the bottomof the Well, said cylinder being provided with an aperture at or nearits top for the inlet of Water, a hollow piston-rod carrying a solid piston disk or head which works in said cylinder, said piston-rod. being also open attheV bottom so that no water will be caught therein and required to be lifted on the `upstroke thereof, one or more suitable valves provided in said piston-rod or piston, a suction-pipe provided with an upwardly-opening valve,` said valve in the suction-pipe, whenclosed,` supporting a column of Water above it, the` construction andV arrangement being` such that upon the descent of the piston, the valve or valves in said piston or rod will be closed `,rod assisting in raising the Water, substantiallyas described.

2.. Azpump, comprising a cylinder closed at `'top and bottom and provided with an opening at or near its upper end for the admission of water, means for Xedly supportingthe said cylinder above the waterin the well, a hollow piston-rodadapted to work in: said-.cylinder the full lengthvthereof` and which isalways open at the `bottomso that no water will be held innthe. piston-rod and requiredto be lifted onthefupstrokethereof, said rod being providedon its lower end with a piston, out-` hvardly-openingvalves hinged to thesaidl` piston, said valves beingw adapted to closelthe openings in. the saidfpiston upon thedownstroke of the piston, andltoibeiopened upon` the upstroke thereof, a-.suction-pipe entering theopening inthe-side lof` the cylinder,. provided with f anupWardly-openingvalve which bpens asthe pistonhdescends and` closesas it lrises,.and.supports.a column of Water; above it,.a,stufngbox secured `in4 the head of the cylinder, said stuffing-boxA being provided.

with` an` opening` Vthrough Lwhich the `pistonvrod` passes, `a collarr on said piston-rocha handle connected to the pistonrod,.and aspring `interposed Abetween the collar and the pum p platform, the construction being` such that nowater will be liftedon ther upstrokeq but only on the downstroke, and the water-lifting operationwill be assisted by the weight of the piston and rod, substantially as described.

3. A pump,.comprising` in itsconstruction.

a suitablecylinder :closed at its bottom4 and topandlocated above the Water in the bottom of the well, said cylinderbeingprovided With` an aperture at or nearY its-top for the inletof Water, ahollowpiston-rod carrying a solid piston disk or head which Works insaidcylinder, said piston-rod being alsoopen at. the bottomso that no water will be caught therein and: required to be lifted. on. theupstroke thereof, one or moresuitable-valves provided insaidpiston-rod or piston, a casing or pipe surroundingtheihollow piston-rod above the cylinder and provided with av spout, a suction-pipe provided withanupwardly-opening va1ve,said valve in the suctionLpipe-,.When closed, supporting a. column of Vwatenabove it, adischarge-pjpe outside the cylinder leadingfrom the lower end of the cylinder to the casing. of the hollow piston-rod above thecylinder, the construction and arrangement beingsuch-that. upon thedescent of thc piston, the valve or valves in said piston; or rod will ICO IIO

Gentse 1o upwardly on the upstroke of the pistoni and Water will be raised on the downstroke only the Weight of the piston and rod assisting in raising the water, substantially as described. In testimony whereof I hereunto affix my signature in vpresence of two witnesses.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5494410 *Feb 17, 1994Feb 27, 1996Zeo-Tech GmbhManually operable vacuum pump
US5531221 *Sep 12, 1994Jul 2, 1996Puritan Bennett CorporationDouble and single acting piston ventilators
Cooperative ClassificationF04B39/0016