US312134A - Windmill - Google Patents

Description

' (No Model.)

B. F. LESTER.

WINDMILL.

No. 312,134. Patented Feb. 10, 18,85.

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NlTE Tarts A E HQEQ WlNDMlLLf SPECIFICATION forming part of Letters Patent No. 312,134, dated February 10, 1885.

Application filed May 12, 1884.

To all whom it may concern:

Be it known that I, ELISHA. F. LESTER, of Ohittenango, in the county of Madison, in the State of New York, have invented new and useful Improvements in \Vindmills, of which the following. taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention consists in improved means for controlling the movement of the windwheel, as hereinafter more fully described, and specifically set forth in the claim.

In the annexed drawings, Figure l is a front elevation of a windmill embodying my improvements, the wind-wheel being shown in dotted lines, to present more fully some of the salient features of the invention. Fig. 2 is a top plan view of the same. Fig. 3 is a longitudinal transverse section on line a: m, Fig. 1.

Fig. 4 is a side View of the top portion of thetower, the turn-table, and parts connected therewith; and Fig. 5 is a transverse section online 3 y, Fig. 1.

Similar letters of reference indicate spending parts.

A represents the usual tower on which the windmill is mounted.

B denotes the turn-table, which is seated on the bed-plate U and adapted to rotate thereon. Said turn-table I provide with an additional lateral support by forming it with a downward extension, B", which is journaled at its lower end in a collar, F, sustained central and adjustable in the tower A by means of rods Z Z. extended radially from the collar through cross-bars m, attached to the tower, as best seen in Fig. 5 of the drawings, the outer ends of said rods being screw-threaded, and provided with nuts at opposite sides of the cross-bars m, by means of which nuts the collar F can be adjusted in its place to sustain the turn-table extension 13 vertically and central in the tower.

From the turn-table B projects a rigid arm, B, on which is journaled the shaft g of the wind-wheel W, said shaft projecting at the rear of the arm B, and having secured to its protruding end a crank, 72, which in this case is represented in the form of a wrist-pin on a wheel, 0, fixed to the shaft 9. From the turntable rises a standard, t, having on its upper end a laterally-projecting arm, k, on which is (No model.)

fulcrumed a walki-ng-beam,D, one end of which is connected with a tubular 'plunger,.p, which is'extended down through an eye in'the center of the turn-table Bandis connected with the ordinary plunger, 1), by a swivel, s, which allows the mill to turn on its vertical axis without disturbing the lower plunger, 1).

0 is a pitman connecting the crank it with the walking-beam D, which latter I provide with a series of eyes, r r, at various distances from the fulcrum of the \valking-bean1,for the attachment of the pitman. By shifting said attachment on the walking-beam I vary the length of the stroke of the plungers p p as may be desired.

R represents the rudder or vane pivoted on the turn-table B, so as to swing at right angles to the plane of the wind-wheel \V. Said rudder is provided at its aforesaid pivotal connection with a shoulder or stop, a, which, by its bearing on the turntablel1mits, the movement of the rudder in one direction, so as to prevent its passing a line at right angles to the plane of the wind-wheel, as illustrated by full lines in Figs. 2 and 3 of the drawings, which position may be termed its normal position, and it is yieldingly held thereby means of a spring-restrained lever, L, pivoted on a lateral projection on the standard 2', and connected with the rudder or vane R bya rod, b. Asuitable spring, t,bearing on thelever, causes the same to hold the rudder in its normal position.

(1 represents a brake-lever fulcrumed on a bracket attached to the standard t, and bearing with one of its ends on the periphery of the wheel 0, hereinbefore mentioned, and having a sheave, 12, connected to-its opposite end. A rope or chain, c, is connected to the rudder B at the side opposite that to which the rod 12 is connected. Said rope or chain passes around a sheave, a, sustained in front of that end of the brake-lever d which bears on the brake-wheel c. From the sheave u the rope or chain 6 passes around the sheave v on the lever d, and thence over a sheave. w, hung on an arm, 2, which projects upward from the top of the standard i and sustains the aforesaid sheave over the end of the tubular plunger 1),

through which the rope or chain e is extended to the foot of the tower A. By pulling on the said rope or chain the rudder R is swung around toward a position parallel with the plane of the wind-wheel, and by the pressure of the wind on the rudder the mill is turned so as to cause the wind-wheel to be presented edgewise toward the wind-current and thus' lose the efi'ect thereof. Simultaneously with the aforesaid action of the rudder the rope or chain 6 causes the brake-lever d to press on the wheel a, and by the friction thereof check the movement of the wind-wheel.

Having described my invention, what I claim as new is- In combination with the turn-table B, standard z, tubular plunger 12, wheel W, rudder R, and the spring-restrained lever L, arranged to hold the rudderinitsnormal positi0n,asshown, the brake-wheel c, rigidly attached to the axis of the wheel W, the brake-lever d, bearing with one end on the brake-wheel, the sheave 1:, con- 20 nected to the opposite end of the brake-lever, the sheave w, hung above the plunger 7, the I sheave u, sustained in front of the lever d, and the rope or chain 0, connected to the rudder and extended around the sheaves u, v, and w, and down through the plunger 19, all combined substantially in the manner specified and shown.

In testimony whereof I have hereunto signed my name and aifixed my seal, in the presence of two attesting Witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 15th day of April, 1884.

ELISHA F. LESTER. [n s.]

Witnesses:

FREDERICK H. GIBBS, O. BENDIXON.

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