US110330A - Improvement in rotary pumps - Google Patents

Description

Catntt (tinte WILLIAM D. ANDREWS, OF BROOKIIAVEN, NEW YORK.

Letters Patent No. 110,330, dated December 20, 1870.

IMPROVEMENT lN ROTARY PUMPS.

The Schedule referred to in these 'Letters Patent and making prt of the sanne.

To all whom lit may concern Be it known that I, WILLIAM D. Axnnnws, of Brookhaven, in the county of Suffolk and State of New York, have'invcnted certain new and useful Iniprovemcnts in Iumps; of which the following is a petuspnmp, which carries and discharges water or other fluids through impetus given to it by rapid mo-v tion, as distinguished from pumps which act by pressnre through means oftight-worhing pistons andjoints. Said invention comprises a case having an annular recess ofcqual diameter at each cud, and a propelling wheel arranged to vrevolve free fromcontact therein, said case being provided with induction and eduction passages in communication with the,annular recess, through openings in the -periphery otf`-the case, the centers of which passages are in the plane of motion of the center of the wheel. Y The invention likewise comprises, in combination. with said case, apropelling wheel, constructed to sweep the recess in the case by wings radiating from a central hub and supported by a central flange extending Y from the hub to their peripherics, said wings extending-either entirely across the hub in a right line, or only from the-central flange to one end of the hub, and alternately upon cithcrside thereof, the wing upon one side being oppositcthe center of the space between two wings upon the other side of the flange.

'Ihe invent-ion also includes a combination of a movlable head to the case, and attached Abearings for the ln'opelling-whcel shaft, whereby said wheel with its shaft and bearings may be removed without dist-urbing tlic case or its attached pipes, .the truth of the hearings is prcscryed, and increased facilities areat'- fordcd ioradjustmcnt or repair; likc,wise provision is secured, bythe turningr of the head with its attachments, for varying the direction of the driving-belt free from strain, operating to produce objectionable spring ot the parts, and admitting otl thc removal of the belt without cutting it.

The invention likewise enibraecs an adj ust-able bearing-box, in combination with a grooved bearing for the propelling-wheel shalt, whereby increased facility is' afforded i'or the removal of the shaft from its box, andI withdrawal of the latter from the head of the pump oi' arni connected with said head.

1-` Vurthermore, the invention comprises a boss or ring for securing the pump in position, said boss or ring being concentric with the driving-shaft, and whereby provision is made for turning the pump entirely around. upon the ring to suit different direct-ions as regards attachment ofthe induction and cduction-pipes which connect with the pump.

In the accompanying drawing- A represents the conduct-ing case, formed with a circular recess, B, in its center, closed at one end, but open at the other, and of a diameter suflicient to allow of the propelling wheel C and its wings b b revolving therein wit-hout touching. This recess B is left open at its one end for the insertion of the propelling wheel C, and is closed by an independent movable head, D, which is secured by bolts c to the tlange E of the case, and has connected or cast in one piece with ita st'uiiing-box, F, and an arm, G. s

An outside bearing-box, 1I, is att-ached to said arm by bolts m passing through slotted holes'n, which permit of the adjustment ot' the propelling wheel within' the case, and which box, in connection with the stufiing-box F, supports the,propelling-wheel shaft I, that thus has no direct connection with the case A, so that said shaft and wheel may be removed together with the head D and boxes 11 and 1I, without disturbing the case or its attached pipes. By this connection of the propelling-wheel shaft and its bearings with the yindependent movable head D, that is attached only to the pump by the flange E, all danger ot' throwing the bearings out of line with each other bythe springing of the pump, pipes, or foul'ldation is avoided, and a ready means secured for taking the wheel from the case-for alterations, adjustment, or-repairs, to do which requires only the removal ofthe bolts efrom the flange E.

'lhis arrangement also permits of the turning of the head D, and with it the arm G and bearilg-box l-I about the shaft I as a center.. ot' motion, and independent-ly of thc pun1pcase, the screw-bolts c being withdrawn from one set of holes and inserted in another to suit, so that in whatever direction the driving-belt is carried around the pulley J it may be made to embrace the arm Gr, bringing the stra-inthereupon in the best direction to prevent its springing, and perniitting removal of the belt from the pulley and pump `without cutting it or displacement of the bearing-box II, Aas would be necessary if the belt were passed around the pulleyJ from the opposite direction to that shown, and between said pulley and the arm G.

'Ihc arm G is in the form ot' a segment of a circle, for purposes hereinafter specified.

.'Ihe outer bearingbox ll has one or more ridges-or' grooves d, which tit corresponding grooves or ridges in the surface of the driving-shaft, to prevent any end movement thereof. Suid box II or standard which carries it, has a curved foot, or base, K, struck, as regards its outer surface, from the center of the shaft I, andv made to tit the conca-ve surface of the arm G, within or on which it is adjustably secured, as hereinbefore described, by bolts m passing through slots a, and whereby thc propelling wheel may be set out ot cv ntact with the end of the case and of thehcad D.

rlhe object of making the arm and foot of the bearing-box circular is to allow of the removal of the shaft from said boK and permit itsA withdrawal from the head, which is done by turning thc box upside down, using the shaft as a center to revolve it upon, and removing the cap, when the box can be released, which, l

owing to the groovcd clip of the box on the shaft, could not be done without this or a similar provision.

The distance between the stationary head and movable-head D of the recess B is just sufficient to allow the propelling wheel to revolve between them without touching.

R .is the induction, and It' the eduction passages for the admission and delivery of water to and from the case and wheel. rlhese passages are in line with each other, at right angles to thc driving shaft I, and are similar, the one to the other, so that their uses may be transposed by reversing the motion of the wheel. Said passages arc circular in their cross-sections, at their openings e c', but are gradually changed in form as they approach the wheel, Imtintaining, as nearly as may be, the same. area of cross-scction throughout, until where theyenter and connect with the recess B they become oblong squares, having a breadth equal to that of the propelling wings, and a depth sntlicient lto maintain a proper area of crosssection. 'lhese passages may be made round, a continuation of and the 'same size as the openings e c', but are changed in shape for the reason that the tendency of the water, when in contact with the wings in motion, isto move at right angles to their faces, and the tirst motion of the water, when met by each successive wing at the point of entrance to the recess, is partially across the incoming column, and the farther the inside of the passage is removed from the center of the wheels motion the nearer will such ihotion coincide with that of the body of the moving column. v

l'hc same result in the opposite direction is effected in the eduction, and the necessary deflection of the water from a straight line in consequence ofthe changing of the position of the faces of the wings, by reason of their rotary motion, is thereby reduced.

A similar result ensues from an enlargement of the diameter of the wheel, but at anincreased cost of coustruction.

lhe passages It lt may b e made to-open into the recess B at points either nearer together or fart-her separated from each other than is here shown, the re.

sult being, if placed farther apart, a greater deflection of. the water from a straight line in passing through thc pump, causingincreased friction, which is to some extent compensated for by thc greater quantity of water acted upon at one timc,\\'hicl 1 reduces the speed necessary to bc given to the wheel to produce a given result. If placed nearer together less water is acted upon, a straighter course is maintained, decreasing the friction, but requiring a more rapid motion ofthe wheel to produce a given result.

L is a supporting standard, with a foot M for scouring the pump to a post, floor, or other foundation. This standard is ofan annular or recessed construction, to receive within it a boss or ring, N, of the pumpcasc A, concentric with the shaft l, and by which said case, through means of set-screws f, is secured to the standard. This arrangement permits of the pump being turned entirely around upon the boss N, as a center, and of being secured at any point ofthe circle by the set-screwsf, to accommodate the direction of 'the attached .induction and eduction-pipes as may be required. The boss and recessed portion into which it ts may be secured, the one to the other, by keys, wedges, or other devices accomplishing the same rcsult as the set-screws f.

The propelling wheel G is of a form to sweep the recess B, having wings, bb', which radiate irom a ccntral hub, h, and which are supported by a central flange, i, extending from thc hub to the peripheries or outer extremities of thc wings. These wings may extend entirely across the hub in right lines, or only from the central flange t' to the end of the hub, and alternately upon either side, as shown in the drawing, wherein thc wings upon one side of the flange are arranged to lie opposite the' centers of the spaces bctween vthe wings on the other side thereof. This sccurcs a more continuous or steady discharge from the pump.

Operation'.

The pump being first filled with water, rapid motion is communicated 'to the propelling wheel G in the direction of the arrows, and the tendency of the water, when in motion, being to lcavc the wheel in lines at right angles to the faces of the wings, and the' only opening from thc recess by whichl it can escape on such line being bylthe cducl'ion passage R, the contents of the wheel are forced into said passage, creating a vacuum within the recess. rater thenl rises 'through thc induction passage R to lill the vacuum, but being met at point'm by the revolving wings, is prevented from passing behind the wheel, and is carried forward to the ednction passage lt', into andY through which it escapes.

The motion communicated to the water being sulli-v cient to create a partial or cnt-ire vacuum within the wheel, according to the speed at which it moves, no water can remain within it when in motion, except in -the part occupying that portion of the recess tin-ming the connecting passage between the induction and eduction openings, and the distance between these openings being small compared with the entire circmnference of the circle, and the stream being but slightly deflected from a straight course in its passage through the pump, a saving of power result-s, which, in other free-joint pumps, is consumed either in carrying water around an entire circle or through passages having various deflections, angles, alnl curves, which are avoided in this invention.

Having described my invention,

1. free-joint rotary pump for conveying water or other fluid, by impetus communicated by rapid mot-ion, when said pump is constructed with a case having an annular recess of like diameter at both ends, within which the propelling-wheel revolves or makes an` entire sweep, free from contact, and said case having induetion and cduction passages comn'iunicating with said recess through openings in its periphery, the centers of which openings are in the plane of motion of the center of the propelling-wheel, substantially as speci-v yfled.

2. In combination with thc case A, its annular' rccess 1), and induction and cduction passages, as described, the propelling wheel G, made. np of radial wings, arranged to project from a central hub, and

supported by a central flange, for operation within the recess, essentially as spccilied.

3. The combination of the movable or adjustable head D and ybearilig-boxes F and H, substantially as and for the purpose herein set forth.

4. lhe bearing-box H having a .curved base, K, and ina-dc adjustable in relation to the curved arm Ur, in combimition with the shaft I having a grooved or ridged tit within said box, essentially as described.

5. The l'combination of the boss or ring N on'the case A, and concentric with the shaft I of' the pump, with the annular or recessed standard L, for varying the position ofthe pump, substantially as specified.

' WM.. D. ANDREWS.

Witnesses:

lnnn. HAYNns, R. E. Ramsau.

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