US1860513A - Pumping apparatus - Google Patents

Description

May 3l, 1932. .1. Ez.V SPERRY PUMPING APPARATUS Original Filed Aug. 29, 1925 4 Sheets-Sheet l May 31, 1932. J. B. sPERRY PUMPING APPARATUS Original Filed Aug. 29, 1925 v4 Sheets-Sheet 2 May 31, 1932. J. B. SP1-:Rm 1,860,513

PUMPING APPARATUS Original Filed Aug. 29, 1925 4 Sheets-Sheet 5 r/ 79 -ml May 31, 1932. .1. B. sPERRY PUMPING APPARATUS Original Filed Aug. 29, 192

5' 4VSheets-Sheet' 4- Ilma? f Patented May 31, 1932 UNITED STATES PATENT ortica JOI-IN B. SIDERRY, F AURORA, ILLINOIS, ASSIGNOR TQ THE AMERICAN yWELL WORKS, 0F

AURORA, ILLINOIS, ACORFORATION OF .ILLINOIS PUIJIPING APPARATUS Orgnalapplcation 1ed August 29, 1925,l Serial No.

53,2721. Divided and this application inea November 15, 1929.y Serial No. 407,361.

.which isralso adaptedto containa `tpiantity of oil or other lubricant by which the driving mechanism is lubricated, and while my im# f provenients are especially adapted'for .appli-` cation to double acting pump jacks inrwhich two pistons are simultaneously reciprocated wkby the driving mechanism, certain ,features thereof may be applied to single acting pumps. The improvements to which my present application is particularly directed have to do with the construction of the de vices tor actuating the pistons and theiradjustmentto insure parallelism of the plun er rods by which the pistons are connected with the actuating mechanism; and with the conl struction of the driving mechanism.

The object of my inventionis to improve the construction and operation of deep well pump jacks with respect to the parts above mentioned, which object l accomplish as illustrated in in the drawings and hereinafter described. What I regard as new is set forth in the claims.

In `the drawings,-

Fig. 1 is a longitudinal vertical sectional view-illustrating more articularl the driving mechanism by which the plungerrods are actuated, and the connections between the pump jack housing and the upper end of the well tube; Y

Fig. 2 is a 'partial vertical section of the well tube showing the pistons therein, some parts being broken away;

Fig. 3 is L'an end view of the parts shown in Fig. 1, part ofthe housing being broken `away and the cover plate being removed;

Fig. 4 is aperspective view of the crosshead by which the outer or tubular plunger is actuated; Y

Fig. 5 is a vertical sectional view on line Fig. 6 is an enlarged vertical sectional view on line 6-6 of Fig. 5; f

Fig. 7 is a plan view,-the housing and the guide rods of the cross-head being shown in section; Y

F ig. 8 is a partial transverse vertical sectienon line S-S-of Fig. 7 and Fig. 9 is a perspective View of the cross-. head by which the inner plunger rod is ac tuated.

Referring tothe drawings,-15 `indicates a base which rests on the ground surface, indicated in Fig. 1 by the reference numeral 16. From the base rises a housing, Vthe kbottom of which is indicated by reference numeral 17 (see Fig. 1), the side walls by 18, 19, and the end walls by 20, 21. The top is indicated by 22. As best shown in Fig. 1,

the upper portion of the end wall 2O is inl clined toward theopposite wall and is provided with an opening23 to receive a detachable cover plate 24tby the removal of which access may be had to the interior ot' the housing. Also the end wall 21 is provided with an opening 25 closed by a detachable cover plate, 26 as shown in saidiigure. Mounted upon the top 22 is an electric motor 27 ywhich furnishes power to drive the pumping mech-y anism hereinafter described.

The lower portion of the housing is adapted to contain a quantity of oil or other lubricant, as indicated in Fig. 1, and to this end the suitable bea- rings 30, 31 in the sidewalls 18, i 19, as best shown in Figs. 1 and 7. One end of said shaft extendsl out beyond the side wall 19 and it carries a pulley 32 adapted to be driven by a belt 33 from a pulley B4 mounted on the armature shaft 35 of the motor 27, as best shown in Fig..1.

A belt tightener pulley 36 carried by a rocking arm 37 and yieldingly pressed against the belt 33 by a spring 38 serves to maintain the proper tension on said belt, as illustrated in dotted lines in Fig. 1 and in full lines in Fig. 5.

The shaft 29 carries a pinion 39 that meshes with a gear mounted in the oil chamber so that its lower portion rotates in the body of oil therein, as illustrated in Figs. 1 and 8. Saidgear is mounted on a double crank shaft comprising a central or hub portion 41 having two diametrically disposed crank portions 42, 43 at opposite sides thereof, at the outer ends of which crank portions are axialalined bearing members 44, 45 as best 1 7 i sllown lin Fig. 8. These bearing members are journaled upon trunnions 46, 47, respectively, carried by heads 48, 49 fitted in suitable openings in the side walls 18, 19 of the housing and secured thereto by screws 50. The gear 40 is secured to the hub portion 41 of the crank shaft by providing said gear with an inwardly extending radial web 51 which is secured to the hub 41 by screws 52. By this arrangement the gear 40 rotates with the crank shaft about the trunnions 46, 47 and as the parts rotate, said gear and also the f crank portions 42, 43 dip into the oil in the n respectively.

housing so that they are properly lubricated.

Mounted in the housing at points above the crank portions 42, 43, respectively, are two levers or walking beams 53, 54, both of which are mounted at one end upon a pivot supported by the side walls 18, 19 adjacent to the end wall 20, as shown in Fig. 1.

The arrangement of the walking beams is such that one of them overlies the crank portion 42 and the other overlies the crank portion 43, and they are operatively connected with said crank portions by pitmen 56, 57, Consequently rotation of the gear 40 swings said walking beams 53, 54 vertically so that they move simultaneously in opposite directions. As shown in Figs. 7 and 8, each of said walking beams comprises t two bars, indicated respectively by 53, 53h

and 54", 54h, the bars of each walking beam being suitably connected in parallel relation to each other by cross bolts 58 or by any other appropriate means. Also at the end of each if of the walking beams on which it isfulcrumed it is provided with a4 bearing sleeve 59 having an oil hole 60 in its upper side to admit lubricant to the outer surface of the pivot 55. As best shown in 8, each of tbe pitmen is connected at its upper end with the appropriate walking beam by providing it with a head 61 which fits on a sleeve 62 having its ends fitted in suitable openings in the members of the walking beam and secured in place by a cross bolt 63. Each head 61 is provided with a iiared oil hole 64 at its upper kside for admitting lubricant to the bearing.

The function of the walking beams 53, 54 is to reciprocate the cross-heads connected respectlvely with plunger rods by which the pistons in the'well are actuated, and the arrangement of these parts will now be dcscribed.

As best shown in Figs. 1 and 5, two verticallydisposed guide rods 65, 66 are provided, which are located in the housing at opposite sides of the gear 40 and adjacent to the partition 28, their lower ends being submerged in the oil in the housing as shown in Fig. 1. These guide rods serve to guide crossheads, indicated generally by 67, 68, which are caused to slide vertically on their respective guide rods by the vertical swinging of thc walking beams 53, 54. The cross-head 67 is connected to a tubular plunger rod 69 that carried a piston 70 operating in a cylinder 71 in a well tube 72, as shown in Fig. 2 and the cross-head 68 is connected to an inner plunger rod, preferably solid, indicated by 7 3, that extends through the plunger rod 69 and is connected with a piston 74 that operates in the lower portion of said cylinder. The connections by which the walking beamsI are connected with their respective crossheads and the cross-heads are connected with their respective plunger rods will be eX- plained more in detail later, but attention is here called to the fact that inasmuch as the plunger rod 73 operates in the plunger rod 69 it is of vital importance that thc cross-heads by which said plunger rods are respectively reciprocated always move in parallelism with each other and with the plunger rods. To this end it is therefore necessary that the guide rods 65, 66 on lwhich said cross-heads respectively travel be maintained vertical and in parallelism with each other, and the means by which this may be accomplished is one of the features of my present invention.

n As best shown in Figs. l and 5, the lower ends of the rods 65, 66 are supported on an offset portion 17a of the bottom 17 and extend through openings in a horizontal bar 75 arranged slightly above said bottom. The end portions of said bar extend into circular openings 76, 77 in the side walls 18, 19, and for the purpose of holding said bar against vertical movement the width of the end portions of said bar is made equal to the diameter of said openings and the side margins of such end portions are curved to match the contour of said openings, as best shown in Fig. 6 which illustrates a corresponding upper bar hereinafter described. Such end portions, however, do not fit in said openings tightly enough to prevent the endwise movement of said bar for adjust-ment purposes hereinafter described, and therefore, to clamp said bar in place and hold it firmly against movement it is provided at its ends with adjusting will be understood from the foregoing that ing the bar tightly in place, but by turning said screws in the opposite direction the bar may be released so that it may be adjusted endwise. The openings 76, 77 are normally closed by removablecover plates 80, 81 secured by bolts 82. Y

Obviously endwise movement of the bar 75 will move the lower ends of the rods 65, 66 in unison laterally or toward or from the side walls 18, 19 of the housing. A bar 83, similar to the bar 75, is provided at the upper ends of the rods 65, 66, and is similarly secured in openings 84, 85 screws 86. The openings 84, 85 are closed by removable plates 87 88 held by screws 89. kThe bar 83 is further-provided with a plate 90 secured to its upper side by screws 91, which plate eXtends'over the upper ends of the rods 65, 66 and holds them against upward movement. The openings in the bar 75 which receive the lower endsv of the rods 65, 66 are the. same distance apart as the openings in the bar 83 in which the upper ends ofsaid rodsare iitted. Consequently the guide rods arel held in parallelism with each other by said bars. lf the guide rods should deviate from a vertical position, or from a positionof alinement with the plunger rods, they may be properly adjusted by adjusting either or both of the bars 75, 83 longitudinally,` as. will be apparent. By this means, therefore, the lines of movement of the two cross-heads may always be correctly maintained. l

The cross-head 67 by which' the youter or tubular plunger 69 is actuated slides on the guide rod 65, and its construction is best shown in Fig. 4, from which it will be seen Y that said cross-head comprises a sleeve 92 of suitable internal diameter and preferably provided with an anti-friction lining 93 hav ing inclined oil grooves 94 therein, as indi"L cated bydotted lines in Fig. 5.y

The lower end of the sleeve 92 is enlarged internally to some extent, so that it is adapted to fit over a collar 95 secured on the lower end of the guide rod 65 and resting on the bar 75, as shown in Fig. 5. This arrangement is provided for the purpose of pumping oil up to lubricate the bearing of the crosshead, but as the means for lubricating the mechanism as a lwhole comprises the subjectmatter of the'patent application above referred to it isl not necessary to describe any of the oiling devices in detail. L

Projecting laterally from the lower end of the sleeve 92 is a bracket 101 which is provided with ears 102, 103 spaced apart and provided withalined openings 104, said ears being connected at the bottom by a transverse concave web 105. Said ears are adapted to receive between them a link 106 which is pivi v otally connected to them at its lower end kby 1 a pivot 107 as shown in Fig. 1. Said link serves the purpose of connecting the crosshead'with the walkinggbeam 53, its upper end being pivotally connected with the members 53a, 53b of said walking beam by a pivot 108. As shown in Fig. 1, said walking beam members lie at oppositeY sides of the vsleeve 92 and atfopposite sides ofthe link 106.

The cross-head 68 by which the inner plunger 7 3 is actuated is in general similar to the cross-head 67, although it differs therefrom with respect to some details. The cross-head 68 also comprises a `sleeve 116 similar to the sleeve 92 and arranged to slide on the guide rod 66.

The lower end of the sleeve 116is similar to the lower end of the sleeve 92 and cooperates with a collar 117'to force oil up'through said sleeve to the upper endthereof. Projecting laterally from the uppery end oftheV sleeve k116 is a bracket provided with two parallel ears 123, 124 which receive a pivot pin 125, as best shown in Fig. 1. A link 126` is pivoted at its upper end on the pivot 125, and at its lower end is connected with the walking beam 54 by a pivot- 127. By this arrangement the swinging of the walking beam 54 serves to reciprocate the cross-head 68.

The cross-head 67 .is connected with the outer plunger rod 69 by means of `anfangle bracket ,132 that is secured to a vertical plate 133 that depends from the bracket 101 and is braced by a flange 134, as best shown in Fig. 4. The bracket 132 has an arm 135 that extends laterallyfrom the plate 133 and has an opening to receive the upperk end of the plunger rod 69, which is connected. with it yby nuts 136, as shown in Fig. 3.

The inner plunger rod 66 is connected with the upper end portion of the cross-,head 68 by means of a head 137 which'extends laterally from the sleeve 116 so as to overlie the horizontal portion 135 ofthe bracket 132.

The head 137 is provided with a hole 138 in vertical alinement with the hole in the arm 135. The upper end of the plunger rod 66 passes throughy the hole 138 and is secured thereto by a nut 139, andas illustrated by dotted lines in Fig. 3, the upper end of said plunger rod is reduced in diameter to form a shoulder at 140'which bears against the under side of the head 137 so that endwise move- Y ment of said plunger rod relatively tothe head 137 is prevented.

From the foregoing it will be seen that the plungerY rods are held in alinement with each other, and as the cross-headguides may be adjusted laterally at either end, as has been already described, the plunger rods may be maintained in correctalinement with the aXis of the pump cylinder.`

As before mentioned the construction of theYcross- heads 67 and 68 is such ythat they sok CII

pump oil up from the. oil chamber, and receptacles are provided at the upper end of each of them for receiving the oil. The walking beams 53 and 54: are provided with suitable longitudinally extending ducts or channels to which the'oil is delivered from the receptacles at the upper ends of thecrossheads, and by this means the bearings for the cross-heads are lubricated. The lubrieating means are not of the essence of my resent invention and need not be described in detail herein reference being made to the above mentioned pending application for those details.

AS the Vmeans for connecting the upper end of the pump cylinder 71 with the base 15, and the means for sealing the space between the well tube 72 and the pump cylinder 71 forms the subject-matter ot a separate application filed of even date herewith it is not deemed necessary to describe this part of the apparatus herein.

I claim:

l. In a pumping apparatus, the combination with a suitable housing, and driving mechanism mounted therein, of a vertically disposed guide, a cross-head mounted on and embracing said guide to slide vertically thereon, and means operable to adjust the position of said guide and said cross-head.

2. In a pumping apparatus, the combination with a suitable housing, and driving mechanism therein, of parallel vertically disposed guides, means connecting the guides together, crossheads adapted to slide vertical.- ly on said guides, and means adjustably curing said connecting means in said housing whereby said guides may be adjusted in unison.

3. In a pumpinr apparatus, the combination wit-h a suitable housing, and driving mechanism therein, of parallel vertically disposed guides, cross-heads adapted to slide vertically on said guides, and means connected with one end portion of both of said guides andoperable to adjust the same in unison.

4. In a pumping apparatus, the combina#` tion with a suitable housing, andY driving mechanism therein, of parallel vertically disposed guides, vcross-heads adapted to slide vertically on said guides, and devices connected with the opposite end portions of both of said guides and separately operable to adjust the same in unison.

tion with a suitable housing, and driving mechanism therein, of parallel vertically dis posed guides, cross-heads adapted to slide vertically on said guides, a longitudinally adjustable bar having its end portions fitted in circular openings in the side members of the housing, and means for securing said bar in a fixed position, said bar being connected with an end portion of each of said guides..

7. In a pumping apparatus, the combination with a chamber adapted to contain a body of oil, a double crank shaft mounted in said chamber, and means for rotating said crank shaft, of vertically reciprocating cross` heads parallel guides for said cross-heads, Walking beams pivotally mounted at one end in said chamber to swing vertically, the opposite ends of said Walking beams being connected respectively with said cross-heads, pitmen connecting the cranks respectively with said walking beams, and means for adjusting one end portion of saidr guides laterally in unison.

8. In a pumping apparatus, the combination with a chamber adapted to contain a body of oil,fand a driving mechanism in said chamber, of a vertically disposed guide rod iii said chamber, means operable to laterally adjust said uide rod, a cross-head arranged to slide vertically on said guide rod, a walking beam pivotally mounted at one end in said chamber to swing vertically, a link connecting the other end of said walking beam with said cross-head, and a pitman connecting said driving mechanism with said wall;- ing beam.

9. yIn a pumping apparatus, the combination with a suitable housing, and driving mechanism therein, of parallel vertically dis posed guides, cross-heads adapted to slide vertically on said guides, a bar fitted upon the upper end portion of said guides, said bar being adjustable endwise, means for securing said bar in a fixed position with relation to the housing, and means for preventing upward movement of said guides relatively to said bar.

In witness whereof, I hereunto subscribe my name this 12th day of November, 1929.

JOHN B. SPERRY.

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