US132358A - Improvement in casings and gates for turbine water-wheels - Google Patents

Description

S. L. DENNEY & W. MERCER.'

Casings and Gates for Turbine Water-Wheel.`

N0, 132,358, Patented Oct. 22,1872.

je! J UNITED STATES PATENT OFFICE.

SAMUEL L. DENNEY', OF GAP, AND WILLIAM MERCER, OF CHRISTIANA, PENNSYLVANIA.

IMPROVEMENT IN CASINGS AND-GATES FOR TURBINE WATER-WHEELS.

Specification formingpart of Letters Patent No. 132,358, dated Octoberl 22, 18.72.

To all whom it may concern:

Be it known that I, SEMI.. L. DENNEY, of Gap, 'Lancaster county, and WILLIAM MER- CER, of Christiana, Lancaster county, Pennsylvania, have invented certain Improvements in the Casing and Gates for Turbine Water-Wheels, of which the following is a specification The first part of our invention relates to the tapered form given to the outer surface of i the wheel-casing c andthe corresponding shape of tle inner surface of the gate-ring B,- whereby we secure a close-fittin g gate, which will eft'ectually prevent the Wasting of the water while the wheel is standing. The second part of our invention relates to the combination of the gate-ring B with the gate-ring C, whereby we can close a portion of the gates at regular intervals around the wheel, while the remaining gates are left open to their full extent.

Figure 1 is a top view; Fig. 2 is an elevation 5 and Fig. 3, a horizontal section.A

a is the casing which surrounds the wheel, and which is provided with gates corresponding with the buckets in the wheel. The outer surface of the casing c is turned with a slight taper. The inner surface of the gate-ring B is fitted to a eorrespondin g shape, which, whenV put together, forms a joint which will notleak from usage, but will continue to wear and remain tight. To the casing a are secured the incline-ways E E, and, also, to the gate-ring similar ways are secured. The gate being revolved to the left until it is arrested by the stop F on the casing a, the apertures will be closed against the admission of the water to the wheel; then, by the reverse movement of the shifting device G, the gate-ring is revolved, and, at the same time, raised just suficiently to free it from the casing of the contact of the inclined ways E E, thus facilitating its free and easy movement in opening and closing the gate.

It will be readily seen that a gate-rin g constructedwith this tapered form and not provided With the means for raising it simultaneously with its rotating movement, the corroding of the metal surfaces would cause the gate to adhere so rmly to the casing as to render the workin g of the gate impracticable,

and thereby destroy the advantages hereby secured in a perfectly-tting and easily-operated gate.

Il is a secondary gate-ring fitting over gate supply of water to the wheel through gate B.

Vhen the full power of' the Wheel is not required to perform the immediate work, water is saved and power gained by closing a portion of the apertures in the casing and allowing a full flow of Water through the others over that of partially closing all of the apertures and admittingonly a partial ow through each and all of the apertures; and to effect this closing of the apertures and shutting oft the low of water from every other aperture when the vwheel is running, it is only necessary to shift the gate H by mea-,ns of the device G until the opposite end vof the slot K is brought against pin L, when the apertures will be closed. By reversing the gate the apertures will all be opened through gate B to the Wheel.

It is not necessary to fit the secondary gate H with that degree of accuracy that gate B is iitted, as it serves only as a regulator while the Wheel is running; consequently, the surfaces may be straight or tapered, as experiencel may determine.

We claim as our invention- 1. The combination of the wheel-casing a, gate-ring B, and inclined ways E E E E, substantially as and for the purpose hereinbefore set forth.

2. The combination with the wheel-Casin g a, gate-ring B, inclined Ways E E E E, and secondary gate-ring H, substantially as and for the purpose hereinbefore set forth.

SAMUEL L. DENNEY. VILLIAM MERCER.

i Witnesses:

SARAH L. DENNEY, M. I. DENNEY.

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