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ingly simple and inexpensive in construction, that it is positive and reliable in operation, and that it dispenses with the vane and is adapted to receive the wind from any quarter. It will also be apparent that the blades may be readily thrown out of operation and may be quickly returned to their operative posi- tion. Changes in the form, proportion, and minor details of construction may be resorted to without departing from the principle or sac- rificing any of the advantages of this inven- tion. What I claim is- In a windmill, the combination of a hori- zontal wind-wheel comprising a vertical shaft, the movable and fixed blades each extending outward from both sides of said shaft and provided at their inner edges with vertical bars 4 and 5, the bars 4 being extended below the wind-wheel, the vertical sleeves 7 fixed to the shaft and provided at their upper ends with tapered recesses and carrying the fixed
blades, the bars 5 being secured to the sleeves 7, the movable sleeves 6 located above the 25 sleeves 7 and provided with depending pro- jections and connected with the bars 4 of the movable blades, said projections adapted to interlock with the said recesses to hold the fixed and movable blades at right angles to 30 each other, a grooved pulley disposed hori- zontally and fixed to the extensions of the vertical bars 4, and alever provided with arms and embracing the pulley and engaging the groove thereof, said lever being adapted to 35 lift the movable sleeves out of engagement with the fixed sleeves, substantially as de- scribed. In testimony that I claim the foregoing as my own I have hereto affixed mysignature in 40 the presence of two witnesses. THOMAS 30OYLE GASSETT. Witnesses: II. I. WVILLSON, S. F. EVANS.