US2011757A - Motion transmitting device for pumps - Google Patents

Description

Aug. 20, 1935. H. J. DICKENSON MOTION TRANSMITTING DEVICE FOR PUMPS Filed Jan. 30, 1935 E m m M mm A a .1 m Q a M w J M M w a A H m d l I I l l I I l III I junction with Patented Aug. 20, 1935 PATENT OFFICE MOTION TRANSMITTING DEVICE FOR PUMPS Herbert Jordan Dickenson, Gladewater, Tex. Application January 30, 1935, Serial No. 4,141

8 Claims.

This invention relates to a motion transmitting or power supply. device susceptible of use in oil fields and elsewhere, the same having been designed especially with a view toward adapting it for use in conjunction with conventional oil well equipment.

The purpose of the invention is to provide an ingenuous structural assembly of interconnected mechanical elements including a suitable source of power, a walking beam, a sucker rod operating cable, and coordinated "drum arrangement, wherein all of said parts have been carefully selected and mechanically coordinated to make for simplicity and expediency of operation in the hopes of providing a device susceptible of overcoming certain recognized disadvantages and to thereby accomplish the desired results in a more dependable and satisfactory manner.

As is evident, my primary aim is to accomplish these'results through the instrumentality of a structure characterized by distinguishing featuresv and'special mechanical adaptations, and in so doing to promote progress and to improve generally power transmission jacks and the like now'employed in the fields.

Other features and advantages will become more readily apparent to those skilled in the art upon reading the succeeding description in conthe accompanying illustrative drawings.

In the drawings, wherein like numerals are employed to designate like or corresponding parts throughout the views:

Figure 1 is an elevational view illustrating the complete assembly and showing a derrick and pump and theway in which the invention coopera es therewith.

Figure 2 is a contracted top plan view of the drum equipped end of the lever or walking'beam. Figure 3 is a side view of the structure illustrated in Figure 2.

Figure is an 'elevational view of one of the specially designed arcuate racks.

In the general set up or arrangement depicted in Figure 1 it will be noted that the conventional derrick is referred to by the numeral 5. The conventional pump casing is denoted at 6 and the reciprocatory sucker rod is indicated at I. This is provided with a special swivel coupling 8 to which the operating cable 9 is attached. The intermediate part of the cable is trained over an appropriate sheave or pulley I0 located at the top of the derick while the depending stretch of said cable extends down for attachment to the walking beam II. This walking beam, which is of special construction, is pivotally attached to a suitable standard l2 mounted on the platform or base (not shown) within the vicinity of the derrick. The walking beam is pivoted between the center and one end and 5 on his overhanging end is a counterbalancing weight l2 which is selectively and manually ad justed to provide sensitivity of control vand effectiveness of operation. Inwardly of this slidable weight is a pitman rod I 3 which is pivotally 10 attached to the beam at one end and eccentrically aitached to a gear M at the opposite end. This gear is rotatably mounted on a suitable-base l5 which also carries a worm l6 forming a part of the power shaft ll. Obviously the parts I6 and 5 M are in driving mesh and the power shaft I1 is adapted to be .connected with a motor or other prime mover (not shown).

I now call attention to the operating end of the walking beam. As shown in Figures 2 and 3 20 this is provided with a fork ill the free ends of the arms of which are provided with bearings to accommodate trunnions or journals IS on the ends of a rotary drum 20. This drum is obviously for reeling and winding the cable 9. The disk 25 like heads at the ends are denoted by the numerals 2| and are of appropriate proportion. The drum itself includes a cylindrical body portion 22 and a tapered reduced end portion 23 on which the initial winding, at the'start of the stroke of the sucker rod, begins. The trunnions carry pinions 24 and these are in constant mesh with the teeth of a pair of spaced parallel sationary rack bars 25. As intimated there are two of these rack bars 25 and they are of duplicate construction and each has its upper end 26 constructed for attachment to an adjacent part of thederrick. The lower end is formed with a laterally directed apertured foot or bracket 21 which is suitably designed andarranged for attachment to the lower frame bar of the derrick, as shown in Figure 1. Obviously. the rack bars are moun ed in relation to the pinion to provide the requisite operating connection. It is evident, therefore, that the initial winding takes place on the ta- 5 pered end 23 of the drum 22 where the greatest pressure is produced. That is to say, the initial upward movement of the sucker rod 1 develops a proportionately greater strain and stress than the remaining part of the stroke after said sucker 0 rod is set into mo ion. Therefore, the tapered end 23 compensates for this. To secure a better balance, however, the counterweight l2 may be properly adjusted. It is further evident that the winding and unwinding of the cable on the drum,

as it is turned through the instrumentality of the rack and pinion means, is suilicient to alternately raise and lower the pump rod or equivalent device.

By way of comparison with more expensive and complicated power supply devices it is evidenced that the motion transmitting means herein described and illustrated is relatively simple, yet sufficiently practical and dependable to fulfill the requirements of a structure of this type.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawing. Therefore, a more lengthy description is regarded as unnecessary.

Minor changes in shape, size, and re-arrangement of details coming within the field of invention claimed may be resorted to in actual practice, if desired. 7

What is claimed is:-

l. In a structural assembly of the class described, a relatively stationary vertical standl ard, a walking beam pivoted on the upper end of said standard, asource of power operatively connected with one end portion of said walking beam, a cable winding and reeling drum mounted on theopposite end'of said walking beam, said drum being provided with actuating pinions, and a pair of fixed arcuate rack bars with which said pinions cooperate in order to rotate the drum alternately in' opposite directions.

'2. In a structural assembly of the class described, a, component part in the form of a walking beam, said walking beam being provided at one end with a counterweight, the opposite end being formed with a fork, the arms of said fork having bearings, a drum having journals mounted for rotation in said bearings, said journalsbeing provided with pinions, said drum including a hub portion and heads confined within the limits of the arms of saidfork, said hub portion embodying a cylindrical major part at one end and a reduced conical ortaperedpart at the opposite end for the purposes described.

3. As a new article of manufacture, a rack for use in association with an assemblage of the class described, said rack comprising a longitudinally curved bar provided with rack teeth, said bar having its upper end constructed for attachment to a derrick or the like, the lower beam being provided with a drum to which the lower endof said cable is connected, and coacting means between the drum and the derrick for rotating the drum and winding the cable thereon.

5. In a structural combination of the class described, a pump, a sucker rod mounted for reciprocation in said pump, said sucker rod being provided at its upper end with a swivel coupling, a derrick, a pulley on said derrick, a

on said support, power supply means operativelyconnected with said lever, a cable winding and reeling device carried by said lever, said device being provided with a rotating pinion, and a rack bar relatively fixed in relation to the support and lever, said pinion being operatively engageable with the teeth of said bar for the purpose of rotating said winding and reeling device alternately in opposite directions.

7. In a structural combination of the class described, a derrick, a pulley mounted at a predetermined point on said derrick, a pump associated with the derrick, said pump including a sucker rod mounted for reciprocation,

said

sucker rod being provided at its upper end with a swivelly attached coupling, a sucker rod re-.

ciprocating cable attached at one end to said coupling and having its intermediate portion trained over said pulley, a support located adja- :ent said derrick, an arm pivoted intermediate its ends on said support, a rotarydrum attached to one end of the 'arm, said cable being connected withsaid rotary drum, said drum having a rotating pinion, and a rack bar mounted on said derrick, said pinion being operatively engageable with said rack bar, together with means for actuating said arm to raise and lowerthe drum, whereby to rotate the pinion and drum and. to wind and unwind the cable in the manner and for the purposes described.

8. In a structural assemblage of the class de-' 5 scribed, as a new article of manufacture and a component part of said structure, a walking beam constructed for pivotal connection inter-'- mediate its ends to a supporting standard, a manually adjustable counterweight sliciably at,- tached to one end of said beam, the opposite end of the beam being provided with opposed bearings, a cable reeling and winding drum having journals at its ends mounted for rotation in said bearings, said journals being provided with pinions, said drum including end confining heads and a hub portion between said heads, said hub portion including a cylindrical part and a re duced tapered end.

HERBERT JORDAN DICKEN SON.

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