US448518A - gollings - Google Patents

Description

(No Model.) 3 Sheets--Sheet l'. E. H. GOLLINGS. ROTARY PUMP.

`Patented Mar. 17,189L

(No Model.) 3V Sheets-Sheet 2.

E. H. GOLLINGS. ROTARY PUMP.

No. 448,518. Patented M211'.` 17, 18191.

(No Model.)

' 3 She-sets-Sheef 3. E. H. GOLLINGS.

ROTARY PUMP.

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tIEuTE `STATES PATENT EEICE.. i

ELLICK I-I. GOLLINGS, OF CHICAGO, ILLINOIS, ASSIGNOR 'lO 'lI-IE GOLLINGS BI-CENTRIC PUMP COMPANY, OF SAME PIrACE.

ROTARY PU NI P.

SPECIFICATION forming part of Letters Patent No. 448,518, dated March 17, 1891.

Application nea May 31.1890. serinrasaese. cromati To @ZZ whom it may concern: M

Be it known that I, ELLICK H. GoLLINes, of Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Rotary Pumps; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference maked thereon, which form a part of this specification.

This invention has for an object to provide an improved construction in rotary pumps.

In certain prior applications for patents filed by me-towit, Serial Nos. 30 l ,675, 315,250, 333,766, and 333,767-I have described rotary pumps in each of which is employed a nonrotating shaft having an eccentric portion, a rotating shell mounted on the concentric por tion of said shaft, and a chambered or winged wheel within the shell and mounted on the eccentric portion of the shaft, the shell and wheel rotating together by force applied to the shell and operating upon the wheel through suitable engagement of the shell with the wheel, and the 'fluid to be pumped entering and emerging through the non rotating shaft, which is made hollow for that purpose.

In the present construction the shell is made stationary or non-rotative and the shaft rotates. The chambered or winged wheel is mounted on the eccentric portion of said shaft and by engagement with the shell is held from rotation, so that it only gyrates within the latter as the shaft turns.

In all of those constructions set forth in said prior applications and in that herein set forth there is a diametrical division of the space between the shell and the eccentricallymounted wheel therein, and the inlet and outlet passages communicate with the several divisions of said space. In said constructions described in the prior applications this line of division is substantially perinanent--as, for example, either vertical or horizontal. In the present construction, wherein the shaft rotates, the line or plane of division referred to revolves on the axis of the rotating shaft, and in order that the inlet and outlet may be in constant communication with these several divisions, one with one and the other with the other, the inlet and outlet ports are also made to revolve.

Describing the invention by reference to the accompanying drawings, I point out that the apparatus is shown with its axis horizontal, but state that it may he arranged with a vertical axis, if desired.

Figure l is a vertical longitudinal section in the line 1 l of Fig. 3, the eccentric-shaft and the anti-friction bearing-rollersI being shown in side view. Fig. 2 is a horizontal section in the line 2 2 of Fig. 3, the anti-friction rollers of the shaft and the sprocket-wheel applied to the shaft being shown in full view, excepting that a portion of the shaft is broken away at its front end to illustrate its attachments with the casting which contains the inlet and outlet ports or passages. Fig. 8 is a transverse vertical section in the line 3 3 of Fig. 2. Fig. 4E is a transverse vertical section in the line 4 4 of Fig. 2, and Fig. 5 is a perspective of one of the gates employed. in theV shell for engagement and cooperation with the ehambered wheel.

A represents a fratrie having the uprights A and A2 at its opposite ends.

B is a non-rotating shell secured to said uprights and composed, as here illustrated, of castings B and B2, constructed to form a cylind rical pump-chamber h, an induction-chainber h', and passages b2, separated by a radial partition b3 and giving communication between the chambers l) and h'. Theinductionchamber b communicates with a source of supply of the liquid to be pumped, as indicated in Fig. l, wherein B3 represents the opening of a suction or inlet pipe. Through the induction-chamberb passes the rotating port-casting Bt.

A3 is an outlet or delivery pipe arranged in continuation of the opening aand bolted to the upright A2.

C is a rotating shaft having an eccentric por tion C,separated bya collar c from the concen tric portions of the shaft, and D is a winged wheel mounted loosely on the eccentric C and occupying and gyrating within the chamber I). The shaft C rests in bearings 111195,

anti-friction rollers c surround the shaft in IOO said bearings. Between the hub ot the wheel D and the eccentric (1 are also shown antit'riction rollers c?.

The wheel D is engaged with the shell l in such manner that its rotation is prevented p and that it is caused to gyrate within the chamber b by the rotation ot` the shaft. C C', and means are provided by which the space between the wheel I) and its surrounding shell is diametrically divided into two chambers, one of which is the suction and the other the expulsion chamber ot the pump. Said wheel l) and the devices for thus dividing the space between it and the shell may be of various constructions. For example, the wheel and its connections with the shell may be like those set forth in some ol` the aforesaid prior applications for patent or like those pointed out in the application for patent tiled simultaneously herewith and bearing the serial number 351,690. As a desirable construction, however, I here illustrate the wheel D as having radial wings d d, at the outer ends ot which are flanges d', projecting laterally therefrom.

For the purpose of closing the space between the inner wall ot' the chamber h and that one of the wings which is opposite the wing that is for the time in contact with the shell, a series of gates are provided corresponding in number with the wings d d. Said gates are shown at E E, and in adaptation to the horizontal arrangement of the axis ofthe pump they are pivoted in the lateral and parallel walls of the shell l. One ot said gates is shown detached and in perspectlve in Fig. 5, from which figure it will be seen that it has gudgeons e c at its opposite ends, which, as 'indicated by dotted lilies in Fig. l, enter sockets in the side walls ot the shell.

The sectional form of each of the gates E F. is indicated by full and dotted lines in Fig. 3, wherein it will be seen that at the inner margin of each gate there is a surface c', which is inclined tothe general surface ot' the gate, so as to bear squarely and closely against the inner sui-tace of the flange d of one of the wheels wings d when the latter is in its most retracted position with respec to the surrounding shell. Each of said gates E is also shown provided with an arm c2, which is illustrated in the form ot` a web and located at one end ot' the gate. This arm projects into the space between two adjacent wings (l of the wheel and is of suitable width to come into successive contact with both of said wings at the proper times to secure the vibration of the gate into and out of contact with the shell. Thetinal closure ofthe gate against the shell is, however, effected by the bearing of the hook-t`ormed [lange d ot' a wing most remote from the sli/ell against the surface e of the adjacent gate E, as seen at the left in Fig. 3, or, in otlieirfwoitls, in the plane of the eccentric C and diametrically opposite the wing d, which is borne by said eccentric into direct contact with the shell. This produces the desired division ot' the general space between the shell and its contained wheel into two chambers, and the line of division sweeps about the axis ot' the shaft C and is always substantially in the plane passing through the axes of the concentric and eccentric portions ot` said shaft. One of these two chambers is the inlet and the other the outlet chamber of the pump, or, in other words, one is the suction side and the other the expulsion side ofthe pump. To give communication of the inlet and outlet with these two several chambers of the pump, the portion I3 of the shell adjacent to the chamber Z1, which contains the gyrating wheel, is divided radially by partitions h3, giving passages ZF, the partitions b3 corresponding in number with the wings d of the wheel D, and the passages h2 therefore corresponding in number with the spaces between said wings d. rlhe partitions D are arranged to coincide with those opposite wings d of the wheel D which are in the plane of the eccentric, so that the division of the space between the shell and the wheel l) is extended to the chamber ot` the shell which contains the partitions h3, and said division varies its position in the latter as in the former upon the rotation of the shaft C.

To provide inlet and outlet ports which shall follow the revolving suction and expulsion chambers ot the pump in their revolution, the casting B1 is provided and titted to rotate within the induction-chamber b of the shell and between the outer edges of the non-revolving partitions b3 and the non-rotating head A2. As a means for rotating the casting B4, it is provided with a socket b, which tits over the adjacent end of the shaft C, and a pin ZF passes through the walls ot the socket D and through a transverse slot ci in the end ot the shaft C. The casting BL has a wall bs extending diametrically across its inner open end and arranged at its inner edge or face in the plane, ot' the division of the space within the chamber l) of the shell. Said inner face ot the partition b3 1s seen in Figs. 3 and et partly in full and partly in dotted lines, where it will be noticed that it is of such width as to pass into apposition with one ot' the partitions b3 before it leaves contact with another. 2y this means the division of the chamber l) is continued through the passages b2 and through the rotating casting 134. At the side of the partition or wall o* of said casting BL corresponding with the suction-compartment of the pumpchamber b an opening is provided in said casting B1, giving communication between the interior ot' the induction-chamber b and the'spaces b2 between the partitions b2, as indicated in the lower part of said casting in Fig. l. The suction-pipe B3 therefore communicates with and supplies the appropriate or suction chamber of the pump. On the opposite side of the wall b3 the passage ot' the casting B4 communicates with the opening d and the delivery-pipe A3, as seen in the upper portion of said casting in said Fig. l.

IIO

The casting Bu1 is shown in double conical forni With its larger end toward the pumpchamber and as having bearing at its extreme inner end against an annular seat h, formed therefor upon the non-rotating portion of the shell B', and at its opposite end against the adjacent upright A2 about the opening a, as clearly seen in Figs. l and 2.

F is a ring fitted to the outer conical sur face of the casting B and screwed into the shell, as shown in said Figs. l'and 2, for the purpose of centering and holding the casting B*l in place at its inner end. F is a similar ring fitted to the outer conical end of saidV casting and screwed to the upright A2 for the proper bearing-support of the outer end of said casting. The joints between the rings F and F and the surfaces of the casting B4, upon which they bear, should be substantially water-tight, andas these rings bear upon conical surfaces of said casting they may be adj Listed to any degree of closeness of bearing thereon by their screw-threaded connection with the shell and head or upright.

In Fig. 2,f represents a set screw threaded through the shell into contact with a flange f on the ring F to retain the latter in the position given it, and f2 is a similar set-screw threaded through the flange on the ring F into bearing against the head A2 to similarly retain the latter ring from movement after` it has been properly adjusted.

In the construction herein described, wherein the shell does not rotate and in which the eccentrically-mou nted Wheel D merely gyrates within the shell B, provision is found to be necessary for the discharge of air from the chamber b, especially in starting the pump, but desirably to prevent the accumulation of air within said chamber of the shell at any time. For this purpose an automatic airvalve is herein shown at G in Figs. l and Said valve, as here illustrated, consists of a bell g, communicating with the top of the chamber b by a passage g and containing a loose rubber or other ball g2. The bell g is provided with a nozzle g3, which is closed or opened at pleasure by a plug-cock gt. Thenl the cock g4 is opened, air within the expulsion side of the chamber ZJ, finding its way to the top of said chamber past the opening and closing gates E E, will lift the ball g2 and have its escape through the nozzle g3. After the air has been exhausted upon starting the pump the cock (fl will be closed and will be opened again only when the pump is to be again started or when the stream thrown by the pump indicates the accumulation of air within the latter.

One object of providing` the gates E with the arms @2, as shown, and by which they are opened by the iianges d of the gyrating wheel, is to give free passage for air from the lower part to the upper part of the chamber l). If it were not for the desire to provide :for such rise of the air within the pump, said gates E might remain in constant bearing against the periphery of the chamber l). The gates serve to retain the wheel D, which is loose upon the eccentric, in its proper position with respect to the shell and to themselves, being the'means by which the rotation of the said wheel is prevented and its gyration secured. The bearing of the wheel-Wings against the gates for this purpose is in a plane transverse to the divisional plane of the pump, as indicated by the several contacts shown in Fig. 3.

In another application for patent lfiled simultaneously herewith, Serial No. 353,690, I have set forth another form of gate cooperating with a gyrating wheel having straight wings within a non-rotating shell. The remaining features are the same as here shown, and the claims for such other features hereto appended are not to be regarded as restricted to the particular form of the wheel and ad junctive devices as illustrated herein.

It is frequently desirable to reverse the direction of flow of water or other liquid through a pump, or, in other words, to transpose the points of induction and discharge. In the construction here shown this will be effected by merely turning the casting B4 upside down. The pipe A3 will then be the suction and the passage B3 the discharge.

I claim as my inventionl. In an apparatus of the general character described, the combination, with a non-rotat ing shell having a series of passages b2, giving communication between chambers l? and b', of a rotating shaft axial to the shell and having an eccentric portion within the chamber b, a non-rotating Winged wheel occupying the chamber l) of the shell and mounted loosely on the eccentric portion of said shaft, rotation of said wheel being prevented by en gagement thereof with the shell, and a rotating member having a port or passage in communication with a part only of the passages h2 and leading through the chamber b.

2. In a rotary pump, a non-rotating shell having a chamber l) and a chamber 1) communicating with each other through a series of passages separated by radial partitions, a rotating shaft C, having an eccentric portion C', awingcd non-rotating wheel mounted loosely on said eccentric portion of the shaft and within the chamber li of the shell, means for connecting the wings of the said wheel with the shell, wherebythe space between the shell and the wheel is diametrically divided into suction and expulsion chambers, and a rotating member B4, constructed and arranged to afford an outlet-passage from the expulsion side of the pump-chamber and an inlet-passage from the chamber b to the suction side of the pump-chamber, substantially as described.

3. In combination with a non-rotating shell, a horizontal. rotating shaft having an eccentric portion, a Winged wheel D, mounted on said eccentric portion of the shaft, a series of gates pivoted to the shell and engaged by the IIO IZO

wings of the wheel, and an air-Valve in the upper part ot' the shell.

l. The Shell l, containing the ehambeiI I; and provided with a Series ol' radial partitions l1* and with a central Shaft-bearing` Il", supported by the partition Il, combined with the rotating.;` shaft resting in said bearing Ir and haring` an eccentric portion C', and a winged wheel mounted on said eccentric portion ofthe slialt and engaged with the shell.

5. In the pump substantially as described, thc combination, with the non-rotating` shell, the rotating shaft having an eccentric port tion, and the gyrating Wheel mounted on said I scribed.

In testimon)v that l claim the foregoing` as my invention l atlix my Signature in presence of two witnessca.

ELLCK Il. GOLLINGS. XVitnesses: l

M. E. DArToN, (t CLARENCE looLn.

located l eccentric portion of the shaft, ot the conical x5 l rotating' partl l, constructed to afford outlet

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