US52947A - Improvement in pumps for oil-wells - Google Patents

Description

PATENT @Trient WALTER S. WILKINSON, OF BALTIMORE, MARYLAND.y y

IIVIPROVEIVI ENT IN PUMPS FOR OIL-WELLS.

Specification forming part of Letters Patent No. 52,947, dated February Q7, 1866.

To all whom it may concern:

Be it known that I, WALTER S. WILKIN- SON, of the city of Baltimore, county of Baltimore, and State of Maryland, have invented new and useful Improvements in Pumps; and I do hereby declare the following to be an exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

The nature of my invention consists in the use of a cone attached to a hollow screw operating on side wedges anda packing-cylinder for the purpose of fastening the pump in the well.

Figure l exhibits a vertical section of an oil-well and of my pump in position for pumping. Fig. 2 is a cross-section of the pump on theline l 2 on Fig. 1, showing the position of the three wedges. Fig. 3 is a top view of the pump with the packing removed, showing the hollow screw anda cross-section of the pistonrod. Fig. 4 is a top View of the conc, showing the plate for fastening the hollow screw to it.

My invention is a self-fastening pump for Artesian, salt, and oil wells, described and operated as follows:

The barrel A of the pump is made nearly of the same diameter as the well into which it is to be inserted. Of the valves it is only necessary to say that they both open upward, that one is in the bottom of the pump and the other in the piston N. They may be constructed of any desired form.

The piston-rod B is tubular, and used as a pipe to conduct the liquid being pumped to the point at which it is desired to dischargeit.

Three springs, C, are attached to the outside ofthe barrel for the purpose ot' preventing the barrel from revolving during the operation of fastening the pump.

The three wedges D, of hard wood or metal, are inserted through the side of the pump t0- ward the center in three slots eorrespondin g iu length and breadth to the length and thickness ofthe wedges. The wedges are maintained in their position by means of the springs E pressing upon each end of them from the outside, and the cone F, resting between them on the inside.

The cone is attached by means of a plate,

Gr, and flange a, or other simple device, to the hollow screw H, which has a thread cut on its outside the whole length of it, which thread works in a corresponding thread in the top of the pump I, which forms a nut for the screw. The hole through this screw is Octagonal, or of some other angular cross-section, and the piston-rod B is made of a corresponding outward cross-section titting in the screw, so as when the piston-rod is turned around it will cause the screw to turn also, at the same time allowing the piston-rod to move upward and downward in the operation of pumping without disturbing the screw in its position.

When it is desired to secure the pump in a well itis lowered to the point at which it is t0 be fastened. The piston-pipe B is taken hold of by apairjof ordinary gas-pipe tongs above the top of the well, and it is turned around to the right. This turns the hollow screw H in its nut I and causes it to descend with the cone F, which is attached to the lower end of thehscrewfthelcone forcing the wedgesD outward. The screwing is continued until the wedges are brought to bear against the wall ofthe well with sufficient force to maintain the pump in its position during the operation of pumping. The packing-cylinder K, of lead or other flexible metal, is then driven down on the circular head b of the pump by means 0f the coupling L of the piston-pipe, which rests upon the top of the cylinder M, to which the packing K is attached.

The driving down of the cylinder L is accomplished through blows given upon the top of the piston and pipe B at the top ofthe well. This driving is continued until thelead has been driven down and expanded sufficiently to form a joint with the wall of the well at the point K and prevent the passage of the Water by the pump,

When it is desired to remove the pump from the well the piston-rod pipe B is turned toward the left until the cone F is drawn up from between the wedges D, when thesprings E force the wedges D in toward the center of the pump. The turning ot' the rod and screw toward the left is continued until the upper end of the hollow screw H comes in contact with the under side of the head of the cylinder M and raises the packing K up from the seat b on the top of the pump, thus freeing the pump from any serious impediment to its 2. The combination and arrangement of the withdrawal from the well. paoking-oylinderK and the screw H and the Wha-t I claim as my invention, and desire to coupling L of the piston-pipe B, as herein (lesecure by Letters Patent, is scribed, and for the purpose set forth.

1. The cone F, attached to 2. hollow screw, H, W. S. VILKINSON. in combination with two or more wedges,rl), Witnesses: operated in the manner and. for the purposes I. y' [iRAINIsLIN REIGART, substantially as herein set forth. GEO. W. SHOWAEN.

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