Improvement in water-wheels
US 101402 A
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Description (OCR text may contain errors)
Pq w. "YARRELL Water Wheel.
No. 101,402. Patented March 29, 1870.
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@met @Wina VPIERCE W. YARRELL, OF LITTLETON, NORTH CAROLINA.
.Letters Patent No. 101,402, dated March 29, 1870.
IMPROVEMENT IN WATER-WHEELS.
The Schedule referred to in these Letters Patent and making of the same.
To all ywhom it may concern: I
Be it known that LPIEROE W. YARRLL, of Littleton, in the county of Halifax and State'of North Carolinahave invented a new and useful Improved Water-Wheel; and I do herebyv declare the following to be a clear and exact description thereof, sucient to enable Vothers skilled in the art to which my invention appertains to make and use the same, reference beinghad to the accompanying drawings making part of this specification, in which- Figure l is a longitudinal section of the box, casing, and wheel.
Figure 2 is a front view of the device for raising and lowering the band-gate.
Figure 3 is a top view, and
Figure 4 a side view of the water-wheel.
Similar letters of reference indicate like parts in all the figures.
My invention consists in a device for raising the band-gate to admit water to the wheel by means of a rack and pinion, and groove in the wheel-casing.
My invention also consists in the arrangement of the 'curved lbuckets `of the water-wheel opposite each other, in such a manner that the upward and downward pressure of the water on the buckets tend to connterbalance each other, thus relieving the pressure of the shaft of the wheel on its bearing.
In the accompanying drawings- A is the box, penstock, or chute in which the water-wheel and casing are situated, and may be provided with valves or gates B B, for the water to escape from the turbined wheel after operating upon it.
Gis the vertical shaft of the water-wheel D, and
I has its bearing in the bottom of the box, penstock, or
per series of buckets for the escape of water, and similar spaces for the same object between the lower series of buckets. l
The water from the band-gate being admitted on the smooth surface S of the wheel, between the inner points of the upper andlower series of buckets, presses upward and downward upon the curved surfaces of the upper and lower series of buckets, thus operating the wheel, and, at the samel time, relieving the shaft O from pressure on its bearing, and enabling the waterwheel to be operated with less power.
K is the upper part of' the casing or cap which surrounds the upper set of buckets', and having a perforation, L, at its center, through which the shaft O passes, and also lugs M. M, provided with bolts, by means of which thecasing is attached to that part of the pen-stock, door, or casing surrounding the lower set of buckets. y
N is the band-gate surrounding the casing, and provided with pins or projections a a sliding in inclined grooves b b made in the casing.
e is a curved rack on the band-gate N, into which meshes the pinion d on the vertical shaft g. By turning the shaft g the band-gate is securely closed or opened, thereby admitting a sufficient quantity of water to operate the wheel.
Having thus described my invention,
What I claim as new, and desire to secure by Letters Patent, is-
1. The wheel D, having the buckets I arranged in pairs upon its periphery to produce an equilibrium of pressure, substantially as described.
2. The hand-gate N, made to rise and fall by rotation through the medium of the rack e, pinion d, rod c, grooves b, and pins ai, applied and operating substantially as described.
To the above I have signed my name this 27 th day of January, 1870.
PIERCE W. YARRELL.
JOHN A. WmDERsnEIM, W. H. FINCKEL.