US744851A - Supporting-frame for pumping-engines. - Google Patents

Description

N0 MODEL witness PATENTED NOV. 24, 1903.

E. TLADAMS. SUPPORTING FRAME FOR PUMPING ENGINES APPLICATION FILED MAY 12, 1902.

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APPLICATION FILED MAY 12, 1902. N0 MODEL.

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SUPPORTING FRAME FOR PUlVll lNG- ENGlNIES.

SPECIFICATION forming part of Letters Patent No. 74A,851, dated November 24, 1903. Application filed May 12, 1902. Serial No. 107,008. (No model.)

To all whom it may concern:

Be it known that I, EDWARD THOMAS ADAMS, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain newand useful Improvementsin Supporting-Frames for Pumping-Engines, of which the following is a specification.

My present invention pertains to improvements in supporting-frames for pumping-engines, the construction and advantages of which will be hereinafter set forth, reference being had to the annexed drawings, wherein- Figure 1 is a vertical elevation of the engine-frame shown in connection with a centrifugal pump; Fig. 2, atop plan view of the same; Fig. 3, a similar view of the shell or oasing oflthepump proper; Fig. 4, an enlarged sectional View of the box or hearing for the upper end of the engine-shaft.

The main object of the invention is to provide a frame for supporting suitable engines adjacent a pit in which is located a centrifugal pump connected to a vertically-disposed shaft, which latter receives its motion from the engines. I

A further object of the invention is to provide in the frame proper, or main portion thereof, a pocket in which is secured the main bearing for the upper end of the pump-shaft, this construction, as will be hereinafter pointed out, permitting the said bearing to be flooded with oil and run in that condition.

A still further object of the invention is to so brace the shell or casing of the pump that it cannot move relatively to the pump-shaft, and consequently cannot cause a cramping of the shaft in its hearing, which is carried by the casing.

In the drawings, A denotes the main girder, which is provided with foot-pieces a b and spans the pump-pit, as shown in Figs. 1 and 2. Said girder is also provided with a guide B for the engine 0 and with a pocket D approximately midway ofits length for the reception of the main bearing-blocks of the vertically-disposed pumpshaft E.

Auxiliary girders F and G are connected to the main girder adjacent to the shaft-bearing and are provided with suitable guides for the cross-heads of the engines H and I. The axes of the three engines stand at one hundred and twenty degrees to each other, and their pitmau-rods are all connected to a common crank J, which is provided with a counterweight, which balances the reciprocating parts of each engine in turn.

Vithin pocket D are mounted shells or quarter-boxes L, which rest on a plate M, bolted against a faced surface on the under side of the main girder. A stuffing-box N is employed in conjunction with said plate, and the two make an oil-tightjoint between themselves and the girder. Thus it is possible to fiood the main bearing with oil and run it in that condition.

In case it is desired to remove the quarterboxes or shells plate M can be lowered, carrying the shells with it. In other words, it allows the shells to be safely and easily removed and replaced.

0 denotes the shell or casing of the pump, surmounted by a casting or frame P, in which is formed the lower bearing Q for the lower end of the pump-shaft. Struts It, located on oppositesides of the shaft, extend upwardly from the frame or casting P to the under side of the main girder A, to which they are connected. A cross-frame or support S is attached to struts R and carries a thrust-bearing T for the pump-shaft. Cross-girders U, secured in the side walls of the pit, bear against the frame or support S and assist in making the structure rigid.

In a single-suction centrifugal pump there is usually an unbalanced downward pressure on the back of the runner V, Fig. 3, with a corresponding upward reaction on the upper part of the volute or casing. The center of downward pressure on the runner falls in the center of the pump-shaft, but the center of upward pressure on the casing is in what may be termed the center of the volute, or the point marked W, Fig. 3. Any motion of the casing will therefore tend to cramp the shaftbearing Q. ranged, however, that the point W falls inside of their point of attachment to the frame F. Hence any tendency to cramp the hearing is prevented.

The thrust-bearing T takes the downward thrust on runner V, and being connected to the struts R the reaction of the casing is made to balance the thrust of the runner.

The system of struts R is so ar- When these two forces are not exactly equal, any excess force in either direction is cared for by the cross I-beams 0r girders U, and also by the main frame through the agency of the struts R.

While three engines have been shown, it is manifest that three are not necessary with certain features of the invention. One may be employed alone or two together, in which latter instance the two will preferably be placed at an angle of ninety degrees to each other.

Having thus described my invention, what I claim is 1. In combination with a main girder adapted to span a pump-pit; a bearing carried by said girder; a pump-shaft extending down into the pit from said bearing; a pump; and a framework interposed between and connected to said pump and the girder.

2. In combination with a main girder adapted to span a pump-pit; a supplemental girder connected to the main girder and likewise extending to one side of the pit; engines mounted in line with said girders; a pumpshaft extending down into the pit; and con nections intermediate the shaft and engines.

3. In combination witha main girder adapted to span a pump-pit; a shaft-bearing carried by said girder; a pair of supplemental girders connected to the main girder at a point adjacent to the shaft-bearing and extending out beyond the opposite sides of the pit; engines mounted in line with said girders; a Vertically-disposed pump-shaft having its upper end seated in the bearing in the main girder; connections intermediate the shaft and the engines; a pump having the operative member thereof connected to the lower end of the shaft; and struts extending upwardly from the pump-casing to the main girder.

4. In combination with a main girder adapted to span a pump-pit, said girder having a pocket formed therein; abearing-box mounted in the pocket; a plate secured to the under face of the girder beneath the box; and a pump-shaft working in the box.

5. In combination with a girder adapted to span a pum p-pit, said girder having a pocket formed therein; a sectional bearing-box mounted in the pocket; a plate detachably secured to the under face of the girder; a stuffing-box working in conjunction with said plate; and a pump-shaft extending through said stnfling-box and working in the sectional bearing.

6. In combination with a girder adapted to span a pump-pit; a centrifugal pump located in the pit; a pump-shaft extending upwardly from the pump and having its upper end supported by the girder; and struts interposed between the girder and the pump-casing, said struts embracing within their confines the pump-shaft and the theoretical center of the pump-casing.

7. In combination with a girder adapted to span a pump-pit; a centrifugal pump located in the pit; a pump-shaft extending upwardly from thepump and having its upper end supported by the girder; struts interposed be-' tween the girder and the pump-casing, said struts embracing within their confines the pump-shaft and the center of the pump-casing; and a thrust-bearing for the shaft connected to the struts.

' 8. In combination with a girder adapted to span a pump-pit; a centrifugal pump located in the pit; a pump-shaft extending from the pump and having its upper end supported by the girder; struts interposed between the girder and the pump-casing; a thrust-bearing for the shaft connected to the struts; and beams extending across from wall to wall of the pit and connected to the thrust-bearing.

9. In combination with a main girder adapted to span a pump-pit; a shaft-bearing carried by said girder; a pair of supplemental girders connected to the main girder adjacent to the bearing and extending outwardly to opposite sides of the pit; a pump located in the pit; a pump-shaft extending therefrom to the bearing in the girder; a counterbalanced crank connected to the shaft; connections intermediate said crank and engines located in line with the girders; struts interposed between the pump-casing and the main girder,

said struts embracing within their confines V IOO

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