US98552A - Improvement in water-wheel - Google Patents

Description

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JAMES D. BRYSON AND WlLLIAll/l` R.v DUNLAP, OE NEWCASTLE, PENN- SYLVANIA.

Letters Patent No. 98,552, dated January 4,1870.

IMPRO'VEMENT IN WATER-WHEEL.

The Schedule referred, to in these Letters Patent and making part of the same.

To all whom it may con-cern:

Be it known that we, JAMES D. BRYsoN and WIL- LIAM RDUNLAP, of Newcastle, in the State of Pennsylvania, have invented a new and useful Improvement in Turbine WatereWheels and Oasings; and we do hereby declare'that the following isa full, clear, and exact description of the same, reference being had to the accompanyingdrawings, and letters of reference marked thereon, making a part of this specilication,in which- Figure 1 is aA vertical section of the wheel and cas- Figure 2, a side elevation of the wheel; and

Figure 3 is a horizontal section ofthe wheel.

To 'enable those skilled in the art to make and use our invention, wel now proceed to describe itsv construction and operation. l l

Similar letters in the drawings refer to like parts.

Our invention consists of a turbine water-wheel, with buckets of a peculiar co1.struction,and so arranged that every part of their surface, fin contact with moving water, rives power.

The eifect of water upon a turbine-wheel depends on the amount of available bucket-surface presented by the latter. To make such surface available, whether 'it be straight orcurved, it must be either transverse or incline-dto the direction of the watercolumn entering the gates. `A portion of the bucket,

parallel to the direction of the water, cannot receive any of its irnpelling force, while it obstructs, by friction,.the action of the water upon the available surface.

In the drawings is shown a turbine-wheel, con structed in accordance with the foregoing principles, and cast all in 011e piece with itself and with the crownplate.

That portion, ct a', of the vertical part of each bucket, which the water first strikes,l shown in fig. 3, is a true curve, whose radius is equal to one-half the width of i the buckets at the discharge end. The remaining portion, a b, of the vertical part o each bucket, forms an inclined plane, slightly curved inward at its inner end, to facilitate the discharge, and receives the remaining force of the current after its direction has been changed by the curved part a a.

The lower lip of each bucket projects horizontally from the under side of the vertical part, and forms an inclined plane, c d, iig. 2, which receivesv the vertical pressure of the water on its'passage toward the lower issues.

A division-plate, e, projects horizontally .from the under side of the ,vertical portion of each bucket, forming part of the same inclined plane with said lower lip, and of equal length therewith, and extending in the opposite direction therefrom to `the Vertical portion of thenext bucket in front, the line of junction of such Vplate with said front bucket commencing at a .clined parts.` Said lower passages are of double the size ofthe upper ones, to the end that theformer may discharge all the water when the Vgate is but half drawn,and thus produce as great an eifect on the lower lips as a full gate can do. The plates e also serveto brace thccnrved outer endsa a of the vertical parts of the buckets, which curved ends are lsubject to greater stress from the water than the remaining portions.

Revertng now .l to 'the second part of our invention- E, fig. 1, is a cast-iron lcurbfwhich encloses the top and lim of the wheel, having an orifice in its top for the vertical shaft to pass through.

u The bush E', that sustains the upper part of the shaft, may be bolted to' the curb, or be cast in one piece with it. I

For the passage of water to the wheel, there is the usual series of openings in the curb,A and, cast in one piece with the latter, and` projecting downward from, forming a continuation of it, is a ring, E", whose oflice is the support of the bridge B, inwhich the shaft Sis stepped.

At a suitable distance below the inlet-openings is a ange, F, cast in one piece with the curb, and extending horizontally from it, whose odice is the support of the chutes G. l

By casting. the lower ring E andthe flange E in one piece with the curb, greater strength is secured, andthe labor of fitting and bolting the iiange and ring to the curb is saved. v

A ring, F, is secured upon the upper edges of the chutes G, which ring surrounds the curb, there being an annular space between the two for the insertion of the gate. 4 e

The gate H is a hoop, of a diametersuiiicient to allow it to slip easily over the curb, and of such height as to reach within about a quarter of an inch of the flange F. v l' The gate, also, has the usual inletpassages,gcorre sponding with those in the curb, there being, between the gate-passages, solid portions Isuiiciently large to close the openings in the curb whenthe gate yis turned.

'lhe gate is supported by radial arms, 1E', extending from Kits upper ring to a hub, H, placed upon the bush E. The gate, arms, and hub are all cast in one piece.

The lower face of the hub is turned true, and rests on the top of the curb, which is turned true to receive it. lhe hub. H largely sustains all the weight ofthe gate and radial arms, thus avoiding all friction at the sides ofthe curb.

VVha-t we claim as new, and desire to secure by Let-ters Patent, is-

The combination of buckets, the outer ends a a of the vertical portions of which are curved transversely of the water-currents, and the remaining portions a b ofthe vertical portions of which are inclined to the watermurrents, with the lower outer lips c d, and with division-plates e, the two latter forming parts of-the samelinelined planes, and dividing the passages between the buckets into au upper and a lower series, substantially as described.

WILLIAM R. DUNLAP. JAS. D. BRYSON.

I Witnesses:

A. M. GREENWOOD, O. O. BnowN.

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