US155690A - Improvement in water-wheels - Google Patents

Description

PATENT GEEIGE.

ROBERT WILSON, OF MCALEVYS FORT, PENNSYLVANIA.

IMPROVEMENT IN WATER-WHEELS.

Specification forming part of Letters Patent No. 155,690, dated October 6, 1874; application filed April 18, 1874.

To all whom it may concern:

Be it known that I, ROBERT WILSON, of McAlevys Fort, in the county of Huntingdon and State of Pennsylvania, have invented a new and valuable Improvement in Water- Wheels and I do hereby declare that the following is a full, clear, and exact description of the construction and operation Of the same, reference being had to the annexed drawings, making a part ot' this specification, and to the letters and iigures Ot' reference marked there- Figure l of the drawings is a representation of a horizontal section of my water-wheel, and Fig. 2 is a transverse sectienal view of the same. Fig. 3 is a detail view.

This inventionhas rela-tion to Water-wheels of the horizontal kind, wherein a number of scrolls and chutes are, employed for the purpose of directing Water 'to the surface of the buckets.

The object of the invention is to provide a Wheel Whose buckets shall have suitable form and shall bear proper geometrical relations to their entering and discharging mouths; and it consists in constructing each bucket in the shape of a quarter' of a cylinder, whose radius is equal to the distance between Jdie outer and inner edges of the wheel-rim, and Whose axis is vertical, intersecting the outer edge of said wheel-rim, and coincides with a radial plane of the wheel passing 'through .the inner edge of the bucket.

In the accompanying drawings, the letterA designates the upper, and B the lower, rim or plate of my wheel. O C designate the buckets, which are preferably of wrought-iron. Each bucket is very nearly a quarter of a cylinder, and is applied between said rims or plates, with its axis vertical and its coneavity inthe direction Of the mouths of the feeding scrolls and chutes. The axis of each bucket intersects the outer edges of the wheel-rims, and is coincident with a plane radiating from the center of the wheel and passing the inner edge of said bucket. The radius of curvature of the bucket is equal tothe distance between the Outer and inner edges ofthe wheelrim.`

Hence each bucket is truly tangent to the inner surface of the Wheel, and intersects its outer surface very nearly at right angles.

In a wheel of twenty inches diameter the radius of the inner edge of the Wheel-rim will be seven inches. The rim will be three inches in width, and three inches Will be the radius of curvature of the bucket. By observing the rules of construction above laid down the tangential position'of the buckets to the inner or discharging surface of the wheel will be readily secured, with the following results: The Water brought to the wheel in ducts, commonly called scrolls and chutes, is dashed against the colmayities of the buckets, causing the wheel to revolve. After the Water has expended its force upon the bucket its course is turned in the direction of ,the inner curve of the bucket, avoiding the convex lower end of the next bucket, or so slightly impinging against it as in no degree to impede or obstruct the revolution of the wheel by the back- Water.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

The water-wheel having the radiuses of its entering and discharging surfaces as l0 to 7,

and equidistant buckets, each a quarter cylinder, Whose radius of vcurvature is equal to the parallel distance between said entering and discharging surfaces, and whose axis is at said entering-surface and coincident with a radial plane passing through the dischargingedge of said bucket, as specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

ROBERT WILSON. Witnesses:

DAVID C. SCOTT, JOHN G. GAsY.

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