US737274A - Pump. - Google Patents

Description

v PATENTED AUG. 25, 1903.

G. G. RICHARDS.

PUMP.

APPLICATION FILED Nev.1o, 1902.

no MODEL.

' Patented August 25, 1903'.

I UNITED STATES {PATENT A OFFI E;

cEoRcE'o. RICHARDS, or BERKELEY, oALIEoRniiia PU MP.

SPECIFICATION forming part of Letters Patent No. 737,274, datedAugust 25, 1903. A uauon filed November 10, 1902. Serlal No. 130,728. (No model.) i

To all whom it 'may concern.-

Be it known that I, GEORGE O. RICHARDS, a citizen of the United States, residing at Berkeley, county of Alameda, State of California, have invented an Improvement in Pumps; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention. relates to-improvements in pumping apparatus. Its object is to provide a pump of simple construction which is adapted for use particularly in oil-wells, where great difficulty is experienced in lifting heavy oils and those containing considerable quantities of sand and like gritty foreign substances.

The invention consists of the parts and the construction and combination of parts,hereinafter more fully described, having reference to the accompanying drawings, in which- Figure 1 is a side view;of my invention. Fig. 2 is a front view of, same impartial sec; vtion. Fig. 3 is a modification of same.

In oil-well pumping as ordinarily conduct ed at present a bucket-valve attached to a sucker-rod reciprocable within a stationary pump-barrel and discharge-pipe is used. This bucket-valve being disposed above the inlet-valve in the bottom of'the pump-barof the oil, particularly where it carries considerable sand in suspension, oifers great resistance to the downward stroke of the valve, which must opento allow the fluid to pass upward. The resistance is not infrequentlygreat enough to cause a sucker-rod to buckle and rub against the casing, with consequent undesirable wear on the latter and on the rod. Much of the difficulty suggested is obviated by the following constructionz' As illustratedin the'drawings,A-represents the usual well-casing, and 2 the main pipe, through which the oil or other fluid is discharged from the well. The lower end of pipe 2 terminates in a pump-barrel or cylinder-section 3, having a suit-able inlet-valve 4 at its lower end. A bucket or cylinder 5 is More-' over, the heavy viscous character of much bored to have a snug moving fit on the outside of barrel 3 andis reciprocated by means of .the rods 6, operated from any suitable source" of power. Cylinder 5 projects always below the lower .end of barrel 3 and has a by reason of the vacuum formed behind it to allow the cylinder to fill. Onlifting the fluid is forced upward past valve 4 to the surface.

The fact thatthe movable part 5 is of greater area than the stationary part 3 and that it carries the larger. valve aifords, in the first instance, a relatively greater lifting force on valve 4 than where the movable part is incased within the barrel, and, in the second instance, less resistance is oflefred bythe fluid on'the downstroke Oonsequentlyless power is required to actuate a bucket and the liabil ityof bending. the sucker-rods is lessened.

Straps or guides 9 are secured at intervals to pipe 2 to steady the rods-and keep them out of contact with the casing and pipe. Guide-rods 10 may be riveted to pipe '2 above where cylinder 5 works, extending downward exterior tothe cylinder and terminating in the inwardly-curved ends 11 to prevent the cylinder from coming in'contact with the bottom of the well and to prevent the cylinder fallingfrom the end of the barrel and being lost inthei'well in case it should. fonany reason become detached from the rods. Again, by reason of a reciprocable part, as 5, operatingbelow the pump-intake a constant agitation is kept up in thewell, and the sand is (I prevented from settling and packing about the end of the pump-barrel. r p

In Fig. 3 is shown a -n1odification' adapted as a compound pumpto be used in conjunction, for example, with windmills. In this case the main delivery-pipe'2 branches at its lowerend to form the pump-barrels 3', and the pump-cylinders 5 are movable upon these barrels in the manner as first described. By imparting an alternating reciprocating motion to these barrels a practically continuous stream may be discharged through pipe 2'.

, in line above the cylinders and to which the sucker-rods 6 are pivoted at opposite points on the disk. 13 is a rod connecting-with the windmill-crank and adapted by the revolution of the latter to impart an oscillating movement to disk 12 and cause the pumpcylinders 5' to act alternately, as readily understood. The sucker-rods 6 are guided in the cross-head 9', secured on pipe 2, and are attached to a ring or flange part 14, screwed upon the upper end of each of cylinders 5. Guide-rods 10, secured to the cross-head 9, extend down through guides 14E beneath the ends of the cylinders similarly and for the same purpose as were rods 10 in Fig. 1.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination in a pump, of two telescoping cylinders, one movable in relation to the other and projecting below the lower end of the latter, and inwardly-opening valves in each of said cylinders, and means extending into the path of the lower end of the movable cylinder adapted to prevent the end of the cylinder coming in contact with the bottom of the Well.

2. The combination in a pump, of a stationary pump-barrel, a valve therein, a discharge-pipe therefor, a cylinder reciprocable on the outside of said barrel and having a snug fit therewith, a valve in said cylinder, sucker-rods exterior to the discharge-pipe, guides for said rods, and guides extending from a point above down along the cylinder and into the path of the latter and serving to support the cylinder should it become detached from the rods limiting the downward movement of said cylinder.

3. The combination in a pump, of a stationary cylinder, a discharge-pipe therefrom, a movable cylindrical section telescoping said stationary cylinder and projecting below the lower end of the latter, upwardly-opening valves in the lower end of each cylinder, and guide-rods secured to the pipe and extending into the path of the movable cylinder below the lower end of the latter for the purposes set forth.

4. The combination in a pump of a main discharge-pipe, a plurality of pump-barrels on the end thereof, cylinders reciprocable on the outside of said barrels, valves in said barrels and cylinders, means for giving said cylinders an alternating reciprocating movement, and guides supported fromabove and extending beneath the lower end of the cylinders and serving to suspend the latter should they become detached.

In Witness whereof l have hereunto set my hand.

GEORGE C. RICHARDS.

Witnesses:

S. H. NoURsE, JESSIE O. BRODIE.

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