US188563A - Improvement in wind-wheels - Google Patents

Description

JAMES A. ALLEN, OF ALBION, ASSIGNOR T0 HIMSELF AND HENRY oseo1m,

OF SHERIDAN, MICHIGAN.

IMPROVENIENT IN WlND-WHEELS.

Specifioation forming part of Letters Patent N0. 188,563, dated March 20, 1877; application filed August 31, 1876.

T0 all whom z't mag; conoem Be-it known that I, JAMES A. ALLEN, of Albion, in the county of Oalhoun end State of Michigan, have invented an Improvement in Windmills, of Whioh the following is a spedifieation My invention relates t0 an improvement in windmills whioh are provided with a governing device for turning the sails more or less out of the wind as tl1elatter inreases in force, thereby regulating and limiting the speed of the windwheel, end insuring its safety in high winde; and the invention is more partioularly designed as an improvement 011 the windmill for whioh Letters Patent N o. 167 7 24 were issued to me September 14, 1875.

The objeet I have in view in the present improvement is to regulate the angles of the sails witl1 relation to the plane of the wind by centrifugal foroe developed in the rotation of the wind-wheel, in a more simple and eft'eotive manner, by weighting the nose or inner end of each sail, and tl1us dispense with the complioated system of Gentrifugal arms and levers heretofore employed.

Figure 1 is a perspeotive view. Fig. 2 is a longitudinal vertical seotion. Fig. 3 is an enlarged longitudinal section of one of the sails.

In the drawing, A represents a tower, surmounted by an annular cap-plate, a, in which is inserted the sleeve B of a turn-table, B. O is the vane, projeoting from the tail end of the turn-table, and is sustained by truss-rods c, spreading eaoh way from a trusspost, c. D is the wheel-shaft, with a faee-plate and wrist at its inner end f0r reoiprocating the oonneoting-rod E. F is a hub, sleeved on the outer end o f the shaft. A groove is turned in its inner end, and its outer end is mortised, as ar e. G is a oollar, keyed on the shaft next to the outer bearing of the turn-table.

Two rode, g g, projeot forward into the sookets in the back of the hab, whioh slides onto thein, so that as the hub is turned the shat't turns with it. H is the head or spider for the wheel, radially flanged to receive the wheel-arms I, and oast with as many radial lugs h on the back as there are mortises in the hab, each lag being slotted to receive a lever, K, pivoted therein, its inner and short arm being stepped in the hub. L are sail-shafts, axially pivoted between the outer ends of the sail-arms. M are the sails, the slats of whioh are radially seeured in slots obliquely sa wed into the edge of eaoh Shaft L, their inner ends beiug a little longer, bat present less area, than their outer arms, and are also let into a girt, N. A braee, N, is nailed to the girt and to the shaft, and to it is pivoted vone end of a link, K, the other end of whioh is pivoted to the outer end of the lever K.- A yoke, O, embraoes theneok 0f the hab in its groove. From the yoke two rods, k, extend back through the outer bearing of the turn-table, and are conneeted to the ends of a forked lever, P, pivoted to a standard, Q, on the turn-table. A link, R, is pivoted at its upper end 110 this lever, and passes down through the eye of the turn-table to a oollar, S, sleeved on the oonneoting-rod.

The foregoing description of the prinoipal parts of the windmill, shown and des0ribed in my said Letters Patent, is only introduced to sl1ow the application of my recent improvement thereto.

'lhe collar S is embraced by a forked r0d, T, the lower end of whieh. is eonneoted With a lever, U, in the base of the tower, by means ot whioh the oollar, the link,and the forked lever P may be raised or lowered, and through the latter the sails oa-n be turned in to 01 out of the wind.

T0 stop the wheel, the sails are turned edgewise to the Wind. T0 set it in motion, the sails are turned to a right angle With the plane of the direotion of the Wind. I

In lieu of the oentrifugal governors and levers described in my said Letters Patent for governing or regulating the angle of the sails, I now seoure a simple weigl1t, d, to the girt of each sail, near the nose or inner end thereof. These weights are so proportioned that Wl1en the speed 0f the wheel exoeeds a given velooity, the centrifugal foroe thereby developed tends to throw outward tl1ese weighted ends of the sails, turning them upon their axes partially out of the plane of its direotion, and thereby reduoing its effective force upon the wheel. As the Wind increases in force, the

2 1'ss,sas

sails will turn farther out of it, and thus keep down its velocity. As the Wind dies away the sails turn back into it.

What I claim as my inventiou is-- In a windmill, substantially as described, the combination, wit;h the sails M, of the pivoted shafts L, a girt, N, a.t the inner e11ds of each set of sails, the braces N, the links K,

for turning the sails, aud the weights d, secured to be said. girts nea-r the immer ends of the said sails, all eonstructed aud arranged substantially as described and showu.

JAMES A. ALLEN. Witnesses:

H. F. EBERTS, H. S. SPBAGUE.

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