US142436A

US142436A - Improvement in windmills

Info

Publication number: US142436A
Authority: US
Publication date: 1873-09-02
Anticipated expiration: 1890-09-02

Description

eQ CARTER.

Wind-Mills.

Patented September 2,1873.

wmmmuunnl' INVENTDR, as. GM mQMXIV z AM. PHUIU-L/T/IUGHAPH/C MM XIIISBfiR/VE'S PROCESS) FnrTEn STATEs TENT DFFIG E.

IMPROVEMENT IN WINDMILLS.

Specification forming part of Letters Patent To all whom it may concern:

Be it known that I, GEORGE A. CARTER, of Princeton, county of Bureau and State of Illinois, have invented certain Improvements in Windmills, of which the following is a specification My iuventionrelates to improvements in governors or devices for automatically regulating the speed of windmills. The invention consists in connecting the automatically-operating governor with a combination of devices, by means of which the sails may be adjusted or furled by hand, the connection being made in such manner that the hand-operating device in no way interferes with the operation of the governor when the windwheel is in motion.-

In the accompanying drawings, Figure 1 is an elevation of a windmill embodying my invention, only two sections of sails being shown.

Referring to the parts by letters, letters A A represent the tower or supporting-frame; B, the bed-plate for the parts constituting the motor proper 5 G, the plate on which they turn 5 D, the main driving-shaft; E, the vane, supported by a truss, G g,- H H, two' opposite sections of the wind-wheel, and which is of that class in which radial arms h h project from a spider, h and between each pair of arms h h the sails I are carried, being attached in series of any desired number'to an axis, J, which has bearings for its ends in the arms h h. K is a sliding sleeve on the shaft D, with radial arms 70 and a circumferential groove, 70, and connected by-rods 7a with an outer plate, K, which reciprocates with it on the shaft D. L L are bars, weighted at their outer ends, and pivoted to standards Z l projecting from the axial bars J, their inner ends pivoted to one arm of elbow-levers l l, the

other arm of which is connected by rods with radial arms 70 on the sleeve K. M is a bent and forked lever, its forked end resting in the groove 70, its longer arm carrying an adjustable weight, m, and its body part pivoted at the bend in standards m. N is also a lever, pivoted near its central part on the upper part of the truss G, and carrying at one end an adjustable weight, a. This weight a may be dispensed with by inakingthe end of the lever heavy enough. 0 is a rod, pivoted No. 142,436, dated September 2, 1873, application filed July 23, 1873.

. at its upper end to the weighted end of the lever N, and extending downward through a hole in the adjacent end of the lever M, and provided with adjustable stops n a. P is the pitman, extending from the crank-plate Q to the pump-piston R, the upper end of which has a suitable bearing in a sleeve-box, S. T is a rod, extending from one end of the lever N downward through the sleeve-box S, and attached at its lower end to a boss, t, which slides on the piston R. U is a rod, sliding in bearings u u, and attached at its lower end to a lever, V. W is an arm, attached at one end to the rod U, and its other end forked and resting in an annular groove in the boss t.

The operation is as follows: The full lines at Fig. 1 show the relative position of the parts when the mill is operating under a light steady wind, and in which case there will be but little or no movement of the governor;

but when the velocity of the wind increases,

and the speed of the wind-wheel is thereby increased, the weighted rods L, through the centrifugal force consequent on the revolution of the wind-wheel, will move radially from the center of the wheel and turn the sails or sections of sails from the wind, and the greater the velocity of the wind, and consequent speed of the wheel, the greater will be the force tending to throw the sails from the wind. To counteract the force and movement of the rods L in this directiontheir inner ends are connected by suitable mechanism to the sliding sleeve K, which is forced inward on the shaft D, when the rods move out from the center of the wheel, and, as the sleeve D is in contact with the forked end of the lever M, the latter is necessarily raised until the weight m balances the force consequent on the movement of the rods L. In this way it will be seen that a perfect sympathy is established between the weighted lever M and the weighted rods L, the least increase of force of the one being counterbalanced by the increased weight of the other, and any decrease of force being immediately followed by a decrease in the counterbalancing weight. The rods L and lever M thus act and react on each other, and turn the sails from or to the wind, as it increases or decreases in velocity, without being interfered with or cumbered by the weight of the device for furling the sails by hand. The stops n n on the rod 0 prevent the turning of the sails too far in either direction; and the distance between these stops can be adjusted as desired.

When it is desired to furl the sails, it is accomplished by pressing down the lever V, when, through the connections U, T, N, and O, the lever M is raised, and through the connection of the latter with the rods L the sails are turned to a horizontal position, as shown by dotted lines in the drawings.

I claimpose specified.

GEO. A. CARTER. Witnesses:

W. W. FERRIS, A. S. EATON.