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US Patent: 260,202
Turbine Water Wheel
John Humphrey - Keene, Cheshire County, NH

USPTO Classifications:

Tool Categories:
propulsion and energy : water power : water wheels : turbine water wheels


Humphrey Machine Co. - Keene, Cheshire County, NH

A. B. Heywood
S. H. Brackett
M. A. Brackett

Patent Dates:
Applied: Jan. 28, 1875
Granted: Jun. 27, 1882

Patent Pictures:
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"Vintage Machinery" entry for Humphrey Machine Co.

It consists, first, in the construction and arrangement of a series of guide-vanes set between annular rims or crowns with detached sliding gates, used with a cylindrical casing having alternate open and closed spaces, so as to form suitable chutes for directing and graduating the flow of water to a wheel, as more fully set forth in the claims; second, in the construction and arrangement of a curved disk or crown with a series of floats, to make a wheel which shall receive the impact of the water at its periphery and discharge the same from radial apertures extending from the hub of said disk or crown to and upon its periphery, so as to utilize the entire area of an outlet-casing or draft-tube of enlarged diameter for the exit of the inert water.


1. A chute-rim for a turbine water-wheel having annular paraboliform crown, and a series of guide-vanes with inner surfaces nearly tangential to the periphery of the wheel, in

combination with an inner easing having a corresponding series of apertures opened and closed by movable gates operated by rotating the chute-rim, substantially as shown and described.

2. In combination with a curved disk or crown-plate in an inward-flow turbine, a series of floats or pressure-vanes with surfaces for the action of the water, which in their extension inwardly from the line of impact at the periphery of the wheel have an inclination from the radii toward the impinging stream, and in their course from the surfaces of impact, near the upper and outer portions of the crown-plate, they trend at first slightly from a perpendicular to the plane of said crown-plate, and then with accelerating deflection and curvature until the discharge line is reached, where the transverse curvature is such as to extend the discharge-orifices from the hub or lower central portion of the curved crown-plate to and upon a portion of the periphery of the wheel, thereby uniting a circumferential with the diametral discharge to increase the effective area for the escape of the inert water.

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