US1382281A - Pump-head - Google Patents

Description

S. M. FULTON.

PUMP HEAD.

APPLxcATfoN FILED Auen. 1920: y l

Patented June 21, 1921.

-2 SHEETS-snif l.

INVENTOR. www

S. M. FULTON.

l PUMP HEAD. APPLICAUON FILED AUG-1, 1920.

ATTORNEY UNITED STATES SAMUEL M. FULTON, OF POMONA, CALIFORNIA.

PUlVIF-HEAD.

Specification of Letters Patent.

Patented June 21, 1921.

Original application i1ed January 14, 1920, Serial No. 351,480. Divided and this application led.

August 7, 1920. serial No. 401,838.

To all whom t may concern Be it known that I, SAMUEL M. FULTON, a citizen of the United States, residing at Pomona, in the county of Los Angeles, State of California, have invented a new and useful Pump-Head, of which the following is a specification.

This invention relates to pump heads, and particularly t0 a mechanism for imparting a variable driving motion to a plurality of plungers to secure a continuous flow, such each stroke is secured-that is, one plunger will start upward and takethe load prior to the completion of the downwardstroke of the other plunger, whereby the column of water is kept in motion and the hammer or jar due to stopping and starting of the column of water entirely obviated.

A further object of the invention is to improve the details ofconstructioii of the driving 'mechanism and the connection therefrom to the plunger rods.

Figure 1 is a front elevation'of the pump head, some of the parts being in section, and the wellpit, well casing and'discharge pipe being shown in section. Y f w Fig. 2 is a top plan view.

Fig. 3 is a side elevation. V

Fig. 4 is a detailed side elevation of one of the walking beams.

Fig. 5 is a detailed vertical section through the cross `head and pump rods.

Fig. 6 isa detail elevation of the crank shaft.

I In the drawings 1 designates a foundation preferably formed of concreteand provided with a rectangular well pit -2. Embedded in the concrete foundation with the upper sur faces lying flush with the upper surface of said foundation I provide opposed horizon- Vtal' tracks, each formed of parallel I beams 3, 4 separated to form longitudinal intermediate slots 5. beams 3, 4 are held in spaced relation by spacing blocks 6 which are maintained in position by transverse bolts'7, 8 extending through alined orifices in the beams and in the blocks. The frame which supports the operating mechanism comprises two opposed side frames 9, 10 longitudinally slidable upon the I beam tracks or sills and maintained in spaced relation by` a tie bar or yoke 11 secured to the upper Vforward ends of the side frames. The frame is secured in adJusted position upon the tracks by bolts 12 and nuts 13. i

The main drive shaft 16 is journaled in the bearings 17, 18 in the rear portions of the side frames 9, 10 and has fixed to one end, beyond the side frame 10, a belt wheel 19 which is driven by aV motor 20 through a belt 21.` A belt tightening device such as is indicated at 22 may be employed if desired. bearings 24, 25 in the forward portions of the side frame 9, 10 and has fixed` to one end, beyond the side frame 9, a gear wheel 26 which meshes with a gearpinion 27 fixed to the main shaft 16. (See Fig. 2.) The crank shaft is formed with crank arms 28,' 29 adjacent each side frame and connected by crank pins 30, 31 respectively, to crank disks 32, 33, the disks also being connected by a central crank pinV 34. (See Fig. 6.) The crank disks rest upon relatively alined rollers 35, 36 Awhich arecarried by a shaft 37.` Said shaft is journaled in .bearing blocks 38-38 carried by the side frames. This structure provides a support at the medial portion of the crank shaft .tol relieve the crank shaft bearings of the major portion of the load of the working strokes of the pump.

Y Journaled in bearings 40-41 at thek rear portions of the side frames is a beam shaft 42' on which are journaled Vthree walking beams 43-44-45, each having a bearing seat 46 engaging the shaft and secured in position by coperating bearing caps 47.

(See Fig. 4.) As the three walking beams are of duplicate construction, a description of one of them will herein su'Hice., Each beam comprises a skeleton frame forming parallel slide ways 50-51, in which slides a crank pin block 52, hereinafter described in detail, the slide block of each beam respectively coperating with its companion A crank shaft 23 is journaled in (see Figs. i, e.) TheV crank-pin of the crank shaft. The beam frame is also provided with an orifice 5 3 providing clearance for non-interference with the main drive shaft 16 which projects Y through said orifice and the forward end of vsaid frame has a pivoted bearing 54 for connection with the pump. The construction ofV the crank pin slide block (see Fig. 4) comprises a lower half-bearing 55 engaging the lower slide way 51 of the walking beam,

and having laterally extended earsV 56-56. Anupper .half-bearing 57 is also provided with laterally extended ears 58-58, the two half-bearingsbeing secured together on the coperating Acrank pin of the crank shaft, by bolts 59-159 engaging through alined orices in the ears of both halt bearings and themselves engaged by clamp nuts 60,-60.

The vertical guide rod is detachably clamped in the outer medial portion of the tie yoke `11 and is' secured in any desired manner at its lower end, for instance, by being screw-threaded into the' flange 76 of the well-head, as shown in Figs. 1 3. The flange 76 is angularly disposed relative to the rod 75 and is secured to the well-head 77 by bolts`78, the well casing and tube being attached to said head in any suitable manner with the tube communicating with the discharge pipe 79. This construction of wellhead provides a discharge having a gradual `bend free from sharp turns as would retard the ilow.

LinksSO-Sl are pivotally connected at 54 to the center walking beam 44C and to a guide head 82 secured to the upper end of an inner pump rod 83 which extends downwardly in telescopic engagement within an outer tubular pump rod 84. The .guide head 82 has `a split bearing 85 slidably engaging the lguide rod 75.. and'by which the pump rod 83 is guided in its reciprocating movements.

The two outer walking beams 43-45 are respectively connected by links 86*87 to opposite sides Volf a cross-head 88 which is secured to the top of the tubular 'pump rod 784CY (see Fig. 1) a suitable packing being provided between the cross-head and inner pump rod 83, as indicated at 89.

In operation, the drive shaft 16 being driven at a uniform rate of speed rotates the crank shaft 23' through the medium of the gear pinion 27y and gear wheel 26, the crank tioned crank pins raise or lower their respective walking beams are indicated by ydotted lines awb on Fig. 3 and as these positions are relatively angularly disposed, it follows that, when one pump rod reaches the end of a stroke the other pump rodhas already started some distance on the next stroke, thereby producing a strokeV lap in the' operation otthe pump rods, which insures a continuous pumping operation. A

The invention herein described provides a pump head mechanism which as a unit may be readily moved from its normal position over the well pit to a position which will Y afford freev access Vto said pit, also by positioning the entire operating mechanism between the two side frames the widthr of the pump connections extending into the pit is reduced toaminimum so that the supporb ing beams may be closely positioned together to afford sturdy compact structure especially adaptable tor yuse in wells in which it is undesirable or impossible'to provide well pits of largedimensions. The' provision of the supporting rollers for carryingthe weight ot the crank shaft insures long lite to the crank shaft bearings and guards against any distortion'of'the shaft. The independent lubricating devices combine eil'ectively with the oil distributingr slide box plates to ya perfect lubrication of the slide ways of each walking beam.

I claim: Y

1. In apumn-head,parallel walkinn'beams` a crankshaft havineropposed crankparms, intermediate crank disks and crank pins connecting the adjacent arms and disks, and slideblocks engaging the crank pinsl and walking beams. i

2. In a pump-head, parallel walking beams having longitudinal slidewavs, crank shaft having opposite crank arms, intermediate crank disks andcrank pins connecting the adiacent-arms and disks, and slide blocks iournaled on the crank pins and slidable in the slideways.

3. In a pump-head, opposed side frames, pivotedparallel walking beams positioned between said trames, a crank shafthaving crank arms adiacent each side frame* crank 115 disks between the crank arms and crank pins connectingthe adjacent arms and disks, and means operatively connecting the crankpins with the walking beams.

4. In a pumphead, opposedside frames, 120 pivoted parallel walking beams positioned betweensaid frames and having longitudinal slideways, a crank shaft having crank arms adjacent each side frame, crankdisks between the crank arms and crank pins con- 125 necting the arms and disks, and slide blocks journaled on the crank pins and slidable in the slideways. y y

5. In a pump-head, a single crank shaft having opposedk crank arms, intermediate 130 crank disks, and-crank pins connecting the beam and the other to the outer beams, and 10 adjacent arms and disks, three Walking means for driving the crank shaft.

beams pivoted on a common axis, the cen- Signed at Pomona, Calif., this 28th day tral beam being operatively connected with of July, 1920. the crank pin connecting the crank disks and the outer beams being operatively connected with the crank pins connecting the respec- Witnesses: tive crank arms With the adjacent disks, GRACE M. MATTHYS, pump rods, one connected With the center HELEN OBRIEN.

SAMUEL M. FULTON.

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