US110930A - Henry millingar - Google Patents

Description

HENRY MILLINGAR, OF PITTSBURG, PENNSYLVANIA.

Letters Patent No. 110,930, dated January 10, 1871; antedated December 30, 1870.

IMPROVEMENT EN VALVES FOR'OiL-PUMPS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whomI it may concern:

Be it known that I, HENRY Mrnnixcau, of the cit-y ot' Pittsburg, in the county oi' Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Gas-Valves for Oil-Pumps; and I do hereby declare the following 'to hc a tull7 clear, and exact description thereof, reference being had to the accompanying drawing forming part of this speciication, in which- Figure 1 is a vertical section through the center of my improved gas-valve;

Figure 2 is a horizontal cross-section through my valve at the line :c of tig. l;

Figure 3 is a vertical section of part of an oil-well, showing the arrangement of the gas-valve in relation to the pump and seed-bag and Figure 4 shows, in perspective, the valve detached.

1n thesevera-l iigurcs like letters refer to similar parts.

It is well known in oil-wells a large amountot' gas is generally emitted from the oil-bearing scams or veins, which, when 'the pump is inserted with the seed-bag around it, finds no other vent than through the working barrel ofthe pump into the tubing above, and that the 'passage of gas through the valves oi' the pump impedcs and often prevents their action.

Various devices have been employed to get rid of thegas by giving it a vent, by means ot' gas-pipe and otherwise, to a point above the seed-bag and outside of 'the tubing, these devices being troublesome, complicated, and liablel to get out of order; besides,r that `by withdrawing the gas from the well-tube the advantage which would be gained from its upward pressure in aiding to lift the column of oilin the well-tube is lost. f

My improvement then consists in the placing of a simple self-acting gas-valve in the well-tubing at any point above the pump-valves and below the seed-bag, in suoli manner that the gas may pass through it upwardfrom outside of the tubing below to the inside of the tubing above the valve.

My improved gas-valvc is designed to be screwed to the lower end of one piece of tubing, and to the upper end of the piece ot' tubing next below it, so as to form a connection between them, not being placed within the tube.

A is the outer shell 0f the gas-valve, which is of considerably larger diameter than the well-tubing B, excepting at the neck or upper end, where it is contracted to such dimensions as to permit a section of well-tubing, B, to be screwed into it at a.

The interior of this shell A is cylindrical, forming the gas-valve chamber c.

Into the lower end of the shell A is screwed a short cylinder, F, the interior diameter of which is slightly smaller than that of the valve-chamber e, so as-to form a shoulder at i, on which the circumferential edge of the gas-valve f rests so as to form a closelytitting joint to prevent the down-How of oil when the valve is closed.

The short cylinder' F has an inner tubular piece, b, connected withl it by radial ribs or arms c c, and leaving a space, c', outside ot' the inner tubular piece b, and between it and the cylinder F, as shown in iig. 2, tbr the upward passage ot' gas into the chamber e when the valve j' is raised.

The bore ot the tubular piece b corresponds with that oi'thc lower tubing or pump-chamber 0, which is screwed into it, as shown in fig. 3.

An annular disk, f, forms the gas-valve, which covers the spaces c"between the shell A andthe tubular piece b, preventing (when closed) the passage ot' oil downward outside ot' the tubing C.

From `this annular disk or valve f depend two pieces h lc, which pass down through suitable holes in two. of the radial ribs or arms c, the holes being large enough in dialneter to allow the valve f t0 rise freely, and the pins being so long asl to extend a little below the ribs c c, and having but-tons g lg at their lower end to prevent the valve rising too far from its seat.

The pins h hlteep the valve-disk f level, and prevent its being tilted over and thus getting out ot' place.

The operation of this gas-valve is shown lin fig. 3, where D is the seed-bag around the well-tubing, which prevents the escape ot' gas in that direction outside ot' the tubing.

E is the. pump-chamber below the gas-valve.-

As the gas is emitted from the veins in the well it rises upward outside of the well-tubing C, below the gas-valve, and passes up through the spaces e c', around the tubular piece b, iig. 2, and, lifting the valve-disk j, passes into the valve-chamber C and.

well-tubing` B, n-'herc it aids in lifting the column ot' oil in the well-tubing, and passes out withfit at the top of the well. n

Having thus described my invention,

What I. claim as my invention, and desire to secure by Letters Patent, is

The gas-valve, consisting of the. combination ofthe tubular piece l), the valve-diskj, andthe shell A F,

constructed and arranged substantially as described, for the purpose of giving a passage for the gas into `the well-tubing at any point above the pump and below the seed-bag of oil-wells, in the manner'hereinbefore set forth.

' In testimony whereof I, the said 'HENRY MILLIN- GAR, have hereunto set my hand.

HENRY MILLINGAR.

W itncsses:

DAVID LoWRY, JOHN GLENN.

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