US50932A - Improvement in deep-well pumps - Google Patents

Description

' l Witnesses: ,g Invenor MLK` N.PETERS. FHOTOJJTHUGRAPHER, WASHINGTON D C UNITED STATES PATENT OFFICE.

S. EMILIUS HEWES, OF ALBANY., NEW YORK.

IMPROVEMENT IN DEEP-WELL PUMPS.

Specilication forming part of Letters Patent No. 50,932, (lated November 14, 1865.

llo all whom it may concern: Be it known that I, S. EMILIUs HEwEs, of Albany, in the county of Albany and State of New York, have invented a new and useful Improvement in Pumps 'or Oil and other Deep Wells; and I dohereby declare that the folfowing is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same reference being had to the accompanying drawilig, forming part of this specication.

The drawing, consisting of only one gure,

represents, partly in section, apump iliade according to my invention.

Similar letters of reference indicate corresponding parts.

The object ot' this invention is to produce a pump i'or operating deep wells, such, for iu stance,asoilwells; anditconsists,amongother things, in securing the cylinder ot' the pump within and near the lower end of the ordinary well-tube, which is usually carried down to, or nearly to, the bottom of the well.

It also consists in extending the well-tube, or that portion thereofinto which the bottom of the pump-cylinder is secured, some distance below the pump, the extended part being perforated with numerous holes to admit oil or other liquid, as well as gas, to the valve in the bottom ot' the pump. The piston and piston-rod are hollow, the piston being made of considerable length, and its diameter being reduced at two or more places intermediate of its extremities, to allow any liquid which linds its way between it and the sides of the cylinder to be collected in the annular spaces left at such reduced places, and so prevent any injurious eii'ect upon the working of the piston. The piston is used without packing, being made, with the exception of the reduced places above mentioned, ot' a diameter sutlcient to occupy the cylinder of the pump and at the same time be capable of being moved freely up `and down in it. The lower end of the piston is brought to a sharp edge by beveling its bottom on the inside, thereby making its bottom in its interior of a conical or funnel shape, the narrowest part forming the seat of the piston-valve.

O is the pump-cylinder. It carries at its lower end a ball-valve working in a cage. The valve is conned in place by a ring, B, on Whose ppper end is formed the seat ot the valve. This ring ts within the lower edge of the cylinder and is confined and held in place bymeansof a section,A,of the well-tube which screws overit onto the outside ot the cylinder, so as to inc-lose the ring between a shoulderin the section and the end of the cylinder. This section extends below the cylinder three or more feet down to the bottom ofthe well, and is perforated with numerous holes to admit tluids and liquids to the pump. The upper end of the cylinder is closed by a cap, through which the piston-rod works as usual, but such a cap is not seen in this example ot' my invention.

To the upper end ofthe cylinder is secured, by a screw-joint coupling or in any other proper way, the upper section, A', of the well-tube, which section is carried up through the oilpipe to the top of the well, or as high as is desired, where it is covered by a cap, D, through which the pistoiriod passes. The cylinder G is, moreover, to be inclosed by a cylinder, A2, which is a section of well-tubing, and is to be screwed or joined by couplings or otherwise onto sections A A ot' the well-tube.

E designates the piston of the pump. Its sides are not packed, as in ordinary pumps, but it is made of considerable length and lls the cylinder as nearly as may be and yet al low it to move freely up and down within it. Its diameter is reduced at two or more places intermediate ofits ends, as at F F, in this example (to form annular' spaces for receiving any oil or other liquid) or any sand or foreign matter which may get between the piston and the cylinder. In this way the cylinder as well as the piston will be preserved from being worn away or injured by such sand or other foreign substance and the binding ot' the piston prevented. The piston is hollow and carries a ball-valve in a cage near its lower end, the piston below the valve-seat being beveled off toward its circumference so as to produce a sharp edge at its bottom. This edge will serve to keep the sides ofthe cylinder free from paraftine, from sand, and other possible sources of injury and obstruction, and will force such matters down to the bottom of the cylinder. The piston-rod is hollow and is carried to the top ofthe well, whereit has a spout, Gr, and its upper end is to be jformed so that it can be connected to the walking-beam or other means for operating it. The upper section, Af, of the Well-tube is carried up through the soiltube.

The piston should be made of bronze and the cylinder of the pump of brass.

1t will be observed that there is no packing over the piston of this pump.k The boxes ot' the valves are to be made strong, so as to be durable and capable of resisting the strain of the pump and the weight ot' the column of liquid in the piston and piston-rod. The bead ot' the piston is not subjected to the Weight of the liquid, but the column of liquid, being coniined in the piston-rod, rests directly on the pistonfvalve, and its pressure acts against the inner sides of the piston and so prevents any possibility of their being collapsed or forced inward. When gas rushes into a well which has my pump the valves will not obstruct its escape, and it will have a free and straight course through the pump from bottom to top.

It will be observed that the water or oil is lifted on the upward motion ot' the piston and hollow pistonvrod, but does not at that time flow from the spout G, but on the downward movement ot' the said piston and pistonrod, by means of the lowering of the point of discharge, the contents iow out at G, as they are prevented by the valve B from iowing out below. The lifting ot the water, oil, SUG.,

3. Bringing' the lower part ot' the piston below the seat of its valve to a sharp edge, substantially as and for the purpose above described.

4. The arrangementot' the hollow piston-rod, piston valves, and cylinder, constructed and operated as described, so that the upward and lifting and downward and discharging actions and operations are alternate and distinct.

The above specification of my invention signed by me this 19th day of September, 1865.

S. EMILIUS HEWES.

VVituesses M. M. LIVINGSTON, J. VAN SANzrvooRD.

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