US167050A - Improvement in windmills - Google Patents

Description

jLTNrrnD ISTATES PATENT Orrrc. A

JOHN Q. ADAMS, or MAasEILLns, ILL-mois.

IMPROVEMENT IN WIN-DIVIILLS- Specification forming part of Letters Patent No. 167,050, dated August 24, 1875; application filed January 4, 1875.

VTo all whom it may concern:

Be it known that I, JOHN'Q. ADAMS, of Marseilles, in the county of La Salle and State of Illinois, have invented certain new` and useful Improvements in Windmills; and I do hereby declare the following to be a full and exact description of the same, reference being had to the accompanying drawings forming part of this specification, in which- Figure l is a perspective view of my improved windmill. Fig. 2 is a perspective view, showing my improved turn-table, with governing-wheel, brake, and wheel-head. Fig. 3 is a sectional view of the same. Fig. 4 is a front view of the governing-wheel, and Fig. 5 is a perspective view of the `joint by which the sections of the Wind-wheel are swiveled to the radial arms.

Similar letters of reference in the accompanying drawings denote the same parts.

My invention relates to improvements in windmills; and consists, first, lin the employment of an improved turn-table for such mills, in which an inner stationary4 hollow cylinder is used, provided at its base with two circular bands or steps, on the outer one of which the outer movable cylinder rests and turns, the outer movable cylinder being also provided at its top with an inner circular band bearing against the stationary cylinder near its top, by which construction an annular space is left between the cylinders, thus avoiding much of the friction between the surfaces ofthe cylinders, which would otherwise occur. My invention further consists in the employment of an outer cylindrical casing surrounding the wind-wheel shaft, and having a removable top for the purpose of removing or gaining access to the shaft. My invention also consists in the employment of a stud, at-

- connecting-rod, not seen in the drawings. c is the inner stationary cylindrical portion of the turn-table which support-s the operatin g mechanism, provided with flanges f f, by means of which it is secured to the tower. d d are circular bands or steps at the base ofthe stationary cylinder c, the outer circular band d supporting the outer movable cylinder c, which is provided with an outer circular band, c3, at its base, resting in the step d, and an inner circular ring at its top abutting against the outer surface of the stationary cylinder c. Both cylinders are made hollow, for the passage of the connecting-rod and the working of the crank B, by means of which the cylinders may be made of greater height, to bring them as near as possible to the horizontal plane of the shaft. By this construction it will be seen that the movable cylinder can readily be turned on the circular band d of the stationary cylinder, and that an open'annular space is left between the cylinders, thus allowing very little frictional contact between them, and enabling me to dispense entirely with the use of friction rollers and balls at the bases of the cylinders, which are expensive and objectionable, because of the unequal wear of the parts. The cylinders ccl are preferably made of as small diameter as is consistent with the proper operations of the crank. The wind-wheel shaft S3 has its bearings in a casing, O, the boxes preferably being filled with Babbitt metal. The top o of the casin g is made removable, being provided with ears, and fastened to the casing by bolts and nuts or their equivalents. By this construction, all ingress of foreign matter to the shaft is prevented, and at the same time, by removing the top, the shaft S3 can readily be removed, or access had to it for any desired purpose whatever. o2 is a flange or brace connecting the outer casing O with the outer movable cylinder c1, and preferably cast with it. This construction materially strengthens the parts. g g are gibs or hooks bolted to the base plate of the stationary cylinder, their upper ends projecting up and over the circular band c3 of the movable cylinder c1, thus allowing the latter to rotate freely, and at the same time preventing it from being uncapped. h is the governing-wheel, carrying the coiled spring S4, one end of which is attached to the inner face of the wheel, the opposite end being attached to an adjustable collar surrounding the wheel-shaft S3, as described in Letters Patent granted to me September 23, 1873. b is a brake for controlling the governing-wheel, fulcrumed in ears e e, attached to the casing O, and projecting belowl it, the -brake `being applied to the lower face of the governingwheel. The upper end of the brake is bowed, as seen at i, and terminates in a lever, 7c, which can readily be operated by a cord or otherwise. Zis a spring, the function of which is to free the brake fromthe surface of the governing-wheel. By the application of the brake to the lower face of the governingwheel, the construction of the parts is made much more simple and fewer than if the brake were applied elsewhere to the surface of the governing-wheel. S (see Fig. 4) are studs inserted in orifices in the front plate of the governing-wheel. The shanks of the studs are 'preferabl y headed on their ends, the `back face of the front plate of the governing-wheel being countersunk to receive `said inner heads, or they may be otherwise attached, the object being to so attach them that they will readily vrotate on their axis. The heads of the studs =S are perforated and screw-threaded, to receive the screw-threaded ends of the rods S2, which connect the governing-wheel with the sections of the wind-wheel, for thepurpose of presenting such sections equally to the wind at whatever angle they may. occupy. For the purpose of causing the sections of the windwheel to turn freely, and with as little friction as possible, I provide the vcross-bars S5 with a cast-iron pivot, t, at each end, adapted to enter the ear V of a metal plate, W, secured to the radial arms of the wheel. The plate W is cast with a central beveled projection, X,

against which the ends of the pins rest when inserted in the ears, to prevent the longitudinal play of the cross-bars, and, to reduce the friction of the parts, the beveled faces of the projections are parallel, or nearly so, to the inner face of the ears. The pivots t are each cast upon-the-center of a socket, Y, recessed to receive the ends of the cross-bars S5, and formed with ears Z at opposite ends, through which the screws or pins pass to hold the socket in place, as shown in Fig. 5.

I claim as my inventionl. The inner stationary `cylinder c, provided at its base with the circular bands or steps d d1, in combination with the outer cylinder c1, having an inner circular band, 02, at its top and an outer circular band, c3, at its base, wherebyv an open annular space is left between the cylinders, substantially as described, and for the purposes setforth.

2. The outer cylindrical casin g O, surrounding and supporting the-wind-wheelshaft, the top-o1 of which is removable, substantially as described, and for the purposes set forth.

3. The stud S, rotating on its axis, attached to the outer face-plate of the governing-wheel h, and provided with the screw-threaded perforation in its head, in combination with the adjustable connecting-rod S2, having its inner end screw-threaded, substantially as described, and for the purpose set forth.

4. The combination of the plates W and pivots t, with the radial arms and independent sections of the wind-wheel, substantiallyr as described, for the purpose specified.

JOHN Q. ADAMS. Witnesses:

N. K. ELLswoRTH, MELVILLE CHURCH.

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