US721661A - Water-motor. - Google Patents

Description

110.721,661. PATBNTEJ M11-11.3, 190s. B. B. BOWER. WATER 1101011.

APPLICATION FILED AUG. 21, 1900.

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. bridge, in the county of Decatur and State of ,ful Improvements inAWater-Motors, of whichY UNITED1 STATES PATENT OFFICE.

BYRON B. BOWER, OF BAINBRIDGE, GEORGIA.`

WATER-MOTOR'.

` SPECIFICATION forming part of Letters Patent No. 721,661, dated March 3, 190s Appncaanrieaiuguazi.1900. seen 110.21606. (No model.) Y

To all whom, it may concern:

Beit known thatI, BYRON B. Bowne, a citizen of the United States, residing at Bain- Georgia, have invented certain new and usethe following is a specification. ,invention relates to double-acting reciprocating Water-motors wherein an end wisemovable cylindrical valve, which constitutes the cylinder for the pistou, is arranged to be reciprocated in a casing having a central and two end chambers.

The object Vof the invention is to eliminatev all back strain or retardation of the main shaft by reason of internal pressure of Water upon surfaces of the cylindrical valve and to cause such pressure to be entirely expended in holding the valve inthe position it should occupy and also to so construct and organize the parts as to render exact fitting of the cylindrical surfaces unnecessary, all as herein-Y after set forth in detail. In 'the accompanyingr drawings, Figure shows a side elevation of a water-engine with my improvements applied. Fig.f2 is a view, on an enlarged scale and in longitudinal section, of the Vcasing and theparts contained therein, Fig. 3 is a view in transverse section on the line 3 3 ofvFig. 2, but on a reduced scale. l

The casing A is made in two sections formedwith flanges a, which are bolted together, as indicated. Within the casing there avre'three chambers-a middle or central chamber A and end chambers AZAS. Between the chambers A2 and A3, respectively, and the central chamber A are annular flanges a', which act as guides for the cylindrical valve B. The exact proportions in size of the chambers A', A2, and A3 is not vital; but preferably the area of each of the chambers Azand A3 is somewhat less than one-third of the'area of the chamber A. Each chamber A2 and Afa-.is provided with an annular series of exit-ports as a4 just inside the flanges et', and the entrancefport for the water is in the couplingr E, located about midway between the ends of the chamber A. 4

The cylinder B acts both to guide the piston-head C and also as a valve to regulate the entrance and discharge of the fiuid. This cylinder extends through the central chamber A' and into the chambers A2 A3. At its opposite ends it isl formed with annular iianges b, which are always arranged'within the chambers A2 A3, and at a short distance gtherefrom are formed annular anges b, which are also arranged at all times within the chambers A2 A3.

Annular lianges a5 are formed on the inte- `rior of the casing just 'inside .the flanges l1..

.These flanges a5 limit the inward movement of the flanges b. The inward movement of -the valve is also limitedwhen the anges b' abut against the flanges et. f-Theangesb fit water-tight in the chambersAAS, and the cylinder B fits water-tight the flanges a', while being free to reciprocate therein: The cylinder B is also formed with fianges bm near opposite ends for limiting its movement.

` Ports B2 B3 are formed'in' the sides lofy the cylinder B some distance from each end there- Qi". Preferably I employ an' annular series of openings or ports in order to obtain-a large area for the entrance and discharge of` water. These ports B2 Bare soarran ged that at times they are located within the chamber `A and at times within the chambers A2 AB in the manner hereinafter described.

The piston yC is arranged to reciprocate within the cylinder B, andthe rod c Aextends through packings c and is connected with a block I, which is adapted to reciprocate vertically in guide-frames 0,'mounted on the top ofthe casing. The 'sliding blockl is pivotally connected at t with a' pitman I, which is jointed at its upper end to an-arm J, secured 'to a shaft K, to which is secured' a bandwheeltindicated by the dotted' lines N) for communicating power to the mechanism to be driven. l Y.

Securedto the shaft K is a cam L, preferably of the shape shown and which is adapted to bear upon rollers Z, carried by a frame M,

which is 'provided with a slotted opening m,

through which the shaft K entends. r This frame is connected by a pitman lH to a link G, that is jointed to the end of a spring-leverF,

`pivoted at f to the guide-frame@v and jointed IOC- the piston the lever F is operated to move the cylindrical Valve back and forth at proper times to shift the valve B in such manner as to alternately change the ow of Water from one side of the piston to the other.

When water is admitted through the coupling E, it passes into the chamber A', surrounding the cylindrical valve, and when the parts are in the position shown in Fig. 2 the water passes from the chamber A .through the ports B:2 in the upper part of the valve B down against the piston-head C, which will be driven in the direction indicated by the arrow. The water below the piston will pass out through the ports B3 and through the ports a3 to the outside. As soon as the piston has reached the limit of its downward movement the cam M acts upon the parts connected therewith to raise the rod D, and thus raise the cylindrical valve B, so thatl the ports B2 will be changed from the chamber A to the chamber A3 and the ports B3 from the chamber A2 will be changed to the chamber A', at which time the water will enter through the ports B3 and act upon the under side of the piston-head, causing it to move inwardly, and the water above the piston will pass through the ports B2 and directly through the ports a4 to the outside. The cylindrical valve is shifted alternately in this way, and water is thus alternately admitted to opposite sides of the piston-rod at proper times to cause its reciprocation.

It will be observed that the cylindrical valve B is of large size and the ports are of large area, permitting large volumes of water to be admitted and discharged at each operation, thus obtaining great power and uniformity in action. The engine may also be operated at high speed.

The cylindrical valve and cylinder are entirely open or unobstructed at both ends, and the annular ilanges fit the chambers A2 A3. Since the [langes b bear against flanges a3 and flanges b against flanges a', when the cylinder is in either of its positions they form a packing or closure to prevent passage of water between them, and if their faces be properly turned or ground to seat accurately a particularly close tit of the cylinder in its bearings is not required, and it will at all times work easily notwithstanding the tendency of its surfaces to corrode or receive deposits from the water. Moreover, as may readily be seen from the drawings, all pressure of water on the inlet side of the piston that is exerted upon the cylinder endwise is expended upon the ange b and serves, therefore, to hold the cylinder in the position it should occupy. There is no such pressure tending to move the cylinder in the opposite direction, (in either ofits positions,) and therefore there is also no tendency for a retarding strain or load to be thrown upon the main shaft of the engine. So far as I know this behavior of an engine of this general type and the construction by which it is attained are new.

I claim as my inventionm l. In a double-acting reciprocating watermotor, a casing divided into acentral and end chambers by interior annular [langes outside of each of which there is another interior annularflangeand between thetwosetsoftlanges discharge-ports in the walls of the casing, the water-inlet being formed in the wall of the central chamber, combined with a cylinder open at both ends, fitted to be reciprocated in the casing, having a series of ports in its Walls adjacent its ends, and exterior annular flanges cooperating with the iianges on the casing, and a piston reciprocating in the cylinder.

2. In a double-acting reciprocating watermotor, a casing divided by internal annular flanges into three chambers, a water-inlet to the central chamber, exit-ports in the end chambers, a cylinder having ports near each end, fitted to be reciprocated in the casing, acting as a valve,and at each end entirely open and formed with an exterior annular flange fitting the end chamber, and a piston reciprocating in the cylinder.

In testimony whereof I have hereunto subscribed my name.

BYRON B. BOWER.

Witnesses:

B. C. DECKINsoN, W. G. D. Tonen.

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