US48378A - Improvement - Google Patents

Description

Y UNITED STAT-ES- PATENT OFFICE.

NEHEMIan` DODGE, or New' Youn, N. -Y.

IMPROVEMENT; IN DEEP-WELL PUMPS.

Speciiication forming part of Letters Patent No. 48,378, dated June 27, 1865.

To all whom t may concern:

Be it known that I, NEHEMIAH DODGE, of the city, county, and State of New York, have invented a new and Improved .Construction ot Pump for Deep Borings; and I hereby declare thatthefollowing is afull and sufficient description thereof, ret'erence'being had to the accompanying drawings and the .letters and tiguresmarked thereon.

Figure l` represents an elevation of said pump. Fig. 2 represen ts 'a vertical section through the axis of the pump; Fig. 3, a horizontal section through the line a b ot' Fig. 2, with an edge view ot' the open valve; Fig. 4, a horizontal section through line ct b of Fig. 2, showing the valve in perspective-z' is the valve, 7c the hinge, n the l1in'ge-pin,m the ring that holds the valve; Fig. 5, horizontal section through b c of Fig. 2, showing the two concentric tubes.

My present invention has the same general design as that patented to me on the 12th March, 1850, but which has already expired.

The design consists in being adapted to deep borings. rlhe former patent being adapted to deep wells, where there is a plentyot' room for surrounding the pum p-barrel with an enlarged valve-chamber, while the present device is designed for deep borings in rock formations, where a very small bore7 on accountV of economy of room Within the barrel growing out of the construction of the valves, is made to answer the purpose of a larger bore with valves of the ordinary construction.

The prominent features to be set forth in the present devices are the construction of the valves to prevent obstructing the current through the barrel, and thus increase the amount of liquid pumped without increasing the size of the bore; and, second, the devices used to prevent injuring the lower part of the pump-barrel by its striking against a rock bottom and so battering up the end of the metallic tube from the workin g of the instrument, and at the same time preserve the valve-chamber air-tight during the rising and falling of the pump-barrel -by a slip-joint.

The ball-valve to pump the liquid from oilwells, to which my present invention is designed to be applied, has some valuable properties which have decided the public to adopt it in preference to all other valves, the principal reason for which is that it can be used without any packing whatever, and from its peculiar construction it can scarcely get out of order; and it' it should become deranged no valveis more easily repaired; but notwithstanding' all this there is a very serious-objection to the use of the ball-valve. In the first place Vthe ball-valve lies necessarily in the axis of the pump-barrel and greatly obstructs the upward current of the liquid, and never can be carriedto one side of the current norout of it. It is always in the way, a mass of obstructing matter equal to its own diameter, to obviate which there is no available remedy withoutsubstitutiug some other valve. The buttery-valve and all leaf-valves, when fully `open, allow a free passage to the fluid after being planed out in the form of a concave ot' 4 a cylinder, so th at when the valve is fully open the concavity ot' the under side of the valvef face shall coincide, or nearly coincide, with the cylindrical concavity ot' the pump-barrel, or

at least shall be parallel with the same, or so nearly that the deviation from it shall only be sufficient to keep the surface of the valve clean by washin g it, and along which cylindrical con- `cave of the valve the stream glides smoothly.

In the second place, the device used to pre serve the valve-chamber air-tight, and at the same time allow the pump-barrel to rise and fall in the act of pumping, is arranged as follows: The lower section of the tube is made double, with a slip-joint like thatot' the telescopic tube, in which the smaller tube, dea signed` to rest on the bottom of the well, is received into the larger tube, while the larger tube plays up and down in the act of pumping. The lower valve is placed on the upper extremity of the inside tube, while the upper valve is fastened to the outside tube a short space above the lower valve. The space between the two valves is a constantlyvarying space, made so by the act of pumping. This combination ofthe inner and outer tube of the barrel to form a slip-joint enables the inventor to use pump-valves without packing, which is of great importance where the barrel is of great length, requiring extra time and expense to elevate the valves from the bottom of the Well.

The above construction of the slip-joint and the cylindrical concave of the under face of the valves, together with the contact part of the valve and valve-seat (being a section of a sphere) so accurately turned and ground as to` require no packing, and still form an accurate and perfect joint for the oil of petroleum wells, destroys in a little time every kind of packing hitherto'invented, which is a serious embarrassment to the business; but the ball-valve, requiring no packing, is the best hitherto used. There is still another feature of the valve which is exceedingly important, preventing derangement ofthe Working parts-namely, the method of securing the joint-pin in its place. This device consists in making the pin of the hingejoint ot' the valve so long that its ends touch the sides ofthe concave of the cylinder, so that it is impossible for the pin to get loose and come out.

The Ydevice is shown at n, Fig. 4,

where represents the open valve, 7c the hinge, and n the pin of the joint, the ends of which Atouch against the sides of the pump-barrel. The valve is set into its placerin the pumpbarrel by irst attaching it to the upper part of an'inside ring, m, which is received into its place by accurately turning or by grinding the surfaces together, so that the ends of the jointpin will be received against the inside of the barrel, or the inner face ot' the ring, which is equivalent thereto.

m represents the ring to which the valve is attached, and is easily removed for repairs, &c.

What I claim, and desire to secure by Letters Patent, is

1. The slip-joint of the lower part of the barrel, in combination with a hollow pistonrod, made in the manner and for the purposes herein described. 1

2. The making of the contact part of the valve and valve-seat ofthe section ofa sphere, in combination with the cylindrical concave vof the undersurt'aee of said valve, substantial] y in the manner and for the purpose set forth.

3. In combination with the said valve, the hinge-pin, substantially in the manner and for the purpose set forth, so that the bearing of the pin against the cylindrical concave ofthe pump shall hold it firmly in place.

NEHEMIAH DODGE. lL. S.]

Witnesses:

MORTIMER J. ENNIS, WM. H. RIBLET.

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