US1688084A - Driving means for rotary devices - Google Patents

Description

Get. 16, 1928.

J. R; MAHAN ET AL DRIVING MEANS FOR ROTARY DEVICES Filed April 18, 1927 2 Sheets-Sheet 1 'A TTORNEY J. R. MAHAN ET AL Filed April 18, 1921 DRIVING MEANS FOR ROTARY DEVICES \1 6 3 w 2 m z w m z \\.\mk\ \\\\\\\N\N /A.////////%/// x u n 1 w w 1 m u .k B w I Oct, 16, 1928.

7 V/IQII e Patented Oct. 16, 1928.

JQSEPH R. MAI-IAN AND JOHN B. mean-n,

1,es,s,0s4 .PATENTQOFFICE.

or TOLEDO, omo, ASSIGNORS T0 in NA- TIONAL SUPPLY COMPANY, or TOLEDO, OHIO, -A CORPORATION OF OHIO.

DRIVING MEANS FOR 7 ROTARY DEVICES Our invention relates to driving means for rotary devices. The invention is illustrated and described in connection with means for driving eccentrics used in operating pumping mechanisms, but it is not limited either to eccentrics or pumping mechanisms. i r

In pumping powers for wells, one-or more horizontal eccentrics are strung on a vertical spindle. A driving wheel is also strung on the spindle and rests on the top eccentric. The driving wheel and eccentricor eccentrics are connected into a rigid unit by means of vertical bolts which pass through holes in the same. Also the driving wheel has a driving arm which interlocks with the eccentric next below it, and, in case there are two eccentrics,'the top eccentric has a driving arm whichinterlocks withthe lower eccentric it beingintended that the bolts and the driving arm or armsshall take proportionate parts of the torsional strains required to drive the eccentric or eccentrics.

Fi 2 a central section taken in the vertical 7 It is one object of this invention to .provide adjustments whereby the bolts and ClIlV- in g arms may be made to do their proportion" of the work. Another object is to construct and-arrange the adjusting means so that they will in addition to their function of making and securing the adjustment mentioned,

take a portion of the lateral strains exerted transversely of a vertical plane 111Wl110l1 the bolts stand. Another object is to provide means for greatly relieving the driving arm or arms from vertical downward strains due to the downward movement of theadjusting wedges which bear thereon. The wedges take the up thrust of thearnror arms when the unit tends to tilt in a direction opposite to that in which the arm or arms extend.

This invention is an improvement on the structures shown in Schwimmer. and lVrights Patents 1,612,989 granted January 4:, 1 927 and 1,6i8,066 granted Nov. 8, 1927.

Referring to the accompanying drawings, Fig. 1 is a horizontal cross-section on the line 1-1 of-Fi g. 2, parts being broken-away plane in which the bolts ll and 12-stand, portions at the top and sides being broken away; Fig. 8,a section on the line-3-3 of Fig. l ;'and Fig. l, a section on the line 41- 1 or" Fig. 1. I 1

On the drawing, 1 designates a vertical spindle having the base 2 on which rests the .friction ring encircling the spindle. The

bushing 4 surroundsthe spindleand hasthe flange'o' seated onthe said ring. The eccentric 6 is mounted onthe bushing and rests onthe flange 5 and carriesthe eccentric strapfY. 1 l

On the top of the eccentric 6 rests the eccentric 8 also mounted onthe bushing 4 andcarrying the eccentric strap 9. The

driving member 10, whichm'ay'bethe lower part of a band-wheel or other driving wheel rests on the eccentricS and embraces the said'spindle l. I

The said two eccentrics 6 and 8 and-the driving member 10 are tightly clamped to gether into a rigid unit by the two :bolts -'11- and 12 arranged parallel with the spindle and on opposite sides thereof.

Thedrivingmember 10, whether bandwheel or gear wheel, has the horizontallyextending driving arm .13 preferably cast integrally therewith. The outer'or free end of the arm 13 lies between two upstanding lugs 14 on the eccentric 8, the :opposing faces of which lugs are vertical or parallel with the aXiaLIcenter of the-eccentric 8. The lateral edges of thearm l3 diverge downwardly. Wedges 15 are seated between each lug 14 and the nearestinclined edge or face of the arm. The ends 16 of the wedges next to the, lugs are parallel with the faces 17 of the lugs they engage, and the I I between two lugs 14 engaged by the wedges 15? which are operated and held in place by the bolts 20,-the lugs li vbeing on the upper face of the eccentric 6. It is not necessary 'to describe theparts 13 ,149, 15 and 20% as they are like the partsr13, 14,15, a-nd 20, respectively, and provide the same connections and functions between the twoeccen tries as are-provided between the upper eccentric 8 and the member 10,

In .devices ofthe' character described it is desirable that the bolts 11 and 12 by their reaction to shearing carry a proportionate share of the torque through the several parts of the unit connected together bythem. This is done by rotating the eccentrics and driving member 10 so that all lost motion between the, bolts and the holes they are inis all takenup in the direction in which the eccentrics and driving member rotate V in practice. The bolts engage the sides of the holes as shown in Fig.1,the rotation being in the direction shown by the arrow. In Fig. 1,"the left-hand wedge 15 will be first tightly seated; then the right-hand wedge will be secured tightly in place. Also the righthand wedge 15 will be. secured in place before the left-hand wedge. The opposing faces of the lugs 1 1 and 14 are made vertical or parallel with the center of the spindle I so as not to. change the relation of the bolts to the parts through which they pass, as the wedges are forced downwardly.

The opposingfac'es of the lugs l t and 14; are made arc-shaped so that the wedges may adjust themselves by sliding on those faces to fit squarely against'the arms 13 and 13.

It will be noted particularly in Fig. 4c that the .arm 13 rests at opposite sides of the wedges, upon machined surfaces on the two rests 23 and 24 on the eccentric 8. These rests prevent downward strains tending to weaken or break the arm 1301f from the member 10.1 The arm 13' together with the wedges 15 resist tilting strains exerted be tween the eccentric'and member 10 at right angles to a vertical plane WlllCll includes the bolts 11 and 12. The two bolts 11 and 12 resist to a large extent tilting strains exerted in a vertical plane in which the bolts stand.

The lower eccentric 6 will have rests (only one, Q3,shown) for the arm 13.

. f We claim 7 reaction against the lugs, clamping the arm against the arm-supporting means and pre venting the arm from any movement independent "of the movements of the sald elements.

. 3. A rotary driving element, a rotary driven element, an arm prO ecting from one element, a pair of lugs carried by the other element and having the arm between them,

bearing the arm, bolts clamping the elements 7 into a unit, and wedging means cooperating with the arm and the lugs for binding the arm against the said supporting means and for preventing the arm from moving toward either lug and for causing all slack between the sides of the bolts and the holes they occupy to be taken up in the direction of rotationof the elements. I 1

5. In a pumping power, a vertical spindle,

superposed eccentricwand' driving members one member, an arm carried on the other member and lying between the lugs, the

rotatable around the spindle, spaced lugs on arm having opposite edges converging upi wardly, wedges seated against the opposing faces of the lugs and havinginclined surfaces resting on the said converging edges, bolts clamping the said members together,

and two other bolts, one-acting on one wedge to cause all slack between the sides of the bolts and the holes they occupy to be taken up in the direction of rotation of the members, and the other acting on the'other wedge to hold it in place.

6. In a pumping power, a vertical spindle, superposed eccentric and driving members rotatable around the spindle, spaced lugs on one member, an arm carried on the other member and lying between the lugs, the arm having opposite edges convergingupwardly, wedges seated against the opposing faces of the lugs andhaving inclined surfaces resting on thesaid converging edges,rcsts for the arm, carried by the member not bearing the arm, bolts clamping the said members t0- gether, and two other bolts, one acting. on one wedge to cause all slack between the sides of the bolts and the holesthey occupy to be taken up in the direction of rotation of the members, and the other acting on the 7 other wedge to hold it in place. v

In testimony whereof, we hereunto afliX our signatures.

JOSEPH n. MAHAN. JOHN B. PICARD. V

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