US994928A - Equalizer for pump-rods. - Google Patents

Description

R. H. JOHNSON; EQUALIZER PoR PUMP RODS.

` .APPLIOATION'FILED AUG. 25, 1910. 994,928.

Patented June 13, 1911.

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ROBERT. H.y JOHNSON, GEE ANSON, TEXAS.

E-QU'AIZIZER FORV PUlVIPeRODS.'

Specification of Letterslatent.

Applicationledil Aii'giist'25,19.102V Serial No; 578,887.

in equalizersforpump rods, andi one ot the objects thereon isto provideax device ot this character, which while operatingI toassist in elevating' the columny ot'water in a pump, isY

designed-to sustain the pump rod1 in its fixed posit-ion andt preclude any possibility of the same turningv in aE horizontal plane.

Alnot-henV object ot'the invention isto providean adjustable nlcrum for theweighted levers, which may,l be;` manipulatedl withouty entirely dismantling the component partsi thereof.'

At further object; ofthe invention is the.

provision` off a' device of this character, which is simple of" construction,thoroughly reliable and etlicientin operation, and inexpensiveA in` manufacture.

With these and other objects in View', the:

vmounted aV clampor bracket, the same oominventionA consists in the'construction, combination and arrangment of parts aswill be:

hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the claims hereunto appended. Y

In said drawings zfFigurel, is a side elevation illustrating the' application orx my equalizer to a pump rod, which is actuatedi by a wind-mill. Fig. 2, is a top plan viewot the adjusting fulcrum. Fig. 3, is a perspective view of the rod clamp.

Similar reference characters indicate corresponding parts throughout the several views in the drawings.

Referring to the accompanying drawings, the numeral 2, designates the upper end portion of the well, which is of the ordinary well known construction, and has mounted therein in the usual manner a pump casing or barrel 3, the latter being of the required length and has its upper end rising above the well. Working within the pump casing or barrel 3, is the ordinary pump rod 4 for connection with a wind-mill or other operating device, (not shown). Mounted upon the pump rod 4 is a clamp, which comprises a pair of duplicate sections 5, each of which is formed from a single piece of metal, with an outwardly arched semi-circular medial portion 6,. andi laterallyV en tending ears 7,A the same being upwardly directed to provide bearing.` eyes or lugs S-,fthe semifcircul'ar medial@ portions@ 6: of. thef sectionsbeing adaptedto enga'gethe pump rod 4.',.by embracing'tliesame andare connected together by means of bolt members 9, Wheneby the clamp may be adjusted: anch secured to.` said. pump rodi at'. any desirable point throughout the length thereof. Connected between the bearing eyes or llugs- 8- o: the clamp,L are the innen ends of.y swinging weighted levers or arms 1,0,w by means of pivots-1.11, the same being passed through the lugsor eyes S' and said levers or arms-LO, so

Vthat the'l'atter may move in a vertical; plane fora purpose as will be' hereinafter more fully described. Adjustably mounted' upon these levers or arms 1() are weight peas 12 the same carrying the usual set screws 113 ler engaging the inflexible levers orV arms 10, wherebysaidweight peas may befsecured 1in adjusted position onv the latter, for' the 'counterbalancing of the pump'rod 41A during the working of thef pumpi Upon the pump casing or barrel 81 is prising duplicate opposed sections-14, each oli whichi is formed from; a single piece of "meta-l, the sections 141beingprovided with youtwardly curved central portions 15 to lengage the pump casing or barrel 3, and

withv upwardly curved* supporting arms 16,

Ihaving outturned extremities 17 between 'whi'cl are rotatably mounted anti-friction guide rollers 18, the same being supported upon stud journals 19 having their bearings in the extremities 17. The sections 14 are united by means of inner and outer clamping bolts 20 and 21, the rollers 18 being peripherally grooved to receive the arms or levers 10, which work therein during the reciprocation of the pump rod on the operation of the pump.

In operation, it will be seen that when the pump rod 4 moves downwardly the weighted arms or levers 10 will be lifted and that when said pump rod moves upwardly to elevate the water inthe well, the weighted arms or levers will descend. Said weight peas 12 therefore assist in elevating the water and put a load upon the pump rod upon its downward stroke, thereby counter-balancing the weight of the water and equalizing the strain upon the wind-mill or operating deiw vice. It Will be observed that there Will be no lateral strain upon the pump rod 4, and also that friction Will be reduced to a minimum. As Will be readily understood, the use of the inflexible bracket with its rollers 18, and the clamp carrying the arms l0, the latter also being inf1eXible,-the reciprocating movement of the pump rod l provides a Weight variation, due to the fact that the rods 10 reciprocate on the rollers 18 (Which form the fulcrum for the rods), thereby moving the Weights l2 toward and from the fulcrum. This variation insures greater possibilities in adjustment to provide for counterbalancing, enabling the operator to vary the Weight during the traverse of the rod' from one extreme of movementl to the other, thereby aiding in overcoming unequal pressures occurring in the pump operation, as, for instance, the pressure provided When the pump-bucket is brought into contact With the Water in the Well or When it is about to leave the Water, the adjustment of the clamp members 8 permitting of a proper application of the maximum and minimum counterbalancing Weights at the proper time. The avoidance of lateral strain of the pump rod is due particularly to the fact. that the arms 10 are inflexible and operates in the peripheral grooves of the rollers 18, the grooves being of sufiicient depth to allow the arms 10 to occupy a position belovv the perimeter of said rollers to elicaciously resist any relative movements of the arms in a horizontal plane. Furthermore, the pump rod 4: Will be caused to reciprocate in a true vertical plane when in,

operation.

From the foregoing it is thought that the construction and operation of the invention Will be clearly understood and therefore a more extended explanation has been omitted.

What is claimed is l. In a device of the character described,

the combination With a pump rod, and a pump casing, of a pair of inflexible arms pivotally connected to said pump rod, adjustable Weights mounted on said arms, and a bracket carried by the pump casing and having a pair of rollers thereon, said rollers being provided With peripheral grooves Within which said arms freely move.

2. In a device of the character described, the combination With a pump rod, and a pump casing, of a pair of inflexible arms pivotally connected to said pump rod, adjnstable Weights mounted on said arms, and av bracket carried by the pump casing and having a pair of rollers thereon, said rollers being provided With peripheral grooves Within which said arms freely move, and the perimeter of the Walls of the grooves extending above the upper side of the arms.

3. Equalizing mechanism for pump rods comprising a support adapted to be adjustably secured to the pump rod, oppositely-eX- tending inflexible arms, pivotally carried by the support, Weight members adjustable on said arms, and a stationary fulcrum member having a fulcrum for each arm, each arm being freely movable longitudinally on its fulcrum to provide for Weight variation during the reciprocation of the pump rod.

In testimony whereof I have hereunto set my hand in presence of tvvo subscribing Witnesses.

ROBT. H. JOHNSON. l/Vitnesses:

J. R. GOLDEN, O. LNI. CRENSHAW.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents, Washington, D. C.

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