SAN FRANCISCO, CAL. 



163 



IRON TURBINE 



Is constructed entirely of steel 

 and iron, after years of scientific ex- 

 perimenting and a close study of the 

 action of wind currents on surfaces of 

 varying curves and angles, at rest and 

 in motion. The result is a Wheel, of 

 which each section is a combination 

 of curved and spiral surface, combined 

 to secure the greatest supporting 

 strength, and the best possible angle 

 to the wind, thus securing the maxi- 

 mum of power for a given sized wheel. 

 The buckets are supported by TWO 

 sets of spokes, and are secured toge- 

 ther with stay rods and to a truss cir- 

 cle uniting them in a strong and sym- 

 metrical wheel. The hub is clamped 

 to the main shaft with a heavy bolt, 

 and secured by the use of two set 

 screws having lock-nuts. The hub is 

 hollow and projects back over the 

 bearing in which the main shaft runs, 

 bringing the weight of the wheel 

 squarely over the supporting box of 

 main shaft, and preventing any sag of 

 the wheel, or uneven wear 'of the 

 Iron Turbine Wind Mill. boxes. It is powerful and long lived. 



The Turntable is supported on steel rollers, on top of the bed plate, giving the 

 greatest freedom to face the wind. 



The governing device is very simple. In a light wind the wheel, which is set a 

 little to one side of the center of the turntable, faces the wind squarely, but as the 

 wind increases it is forced back to an angle nearer in line with the vane. This ten- 

 dency is counteracted by the weight of the vane acting on a gradually increasing lever- 

 age, produced by the shape and position of the eccentric casting around which the 

 vane chain passes. To secure any desired speed it is only necessary to adjust the posi- 

 tion of the eccentric casting with reference to increasing or decreasing the leverage 

 with which the weight of the vane acts. 



The Gearing consists of an internal gear and pinion. The latter is on the inner end of the main 

 shaft, and acts upon the large gear to which is attached the wrist pin, which is adjustable for 8% or 5-inch 

 stroke. This internal gear avoids the back lash, so common in spur gears, and gives a normal speed to 

 the pump, while the wheel is allowed to reach its greatest power. The wheel making two revolutions to 

 each stroke of the pump, more than doubles the power on any given length of stroke. 

 PRICE LIST BACK GEARED. 



No. 1, 8J ft. Turbine Mill, weight 450 Ibs. . . .$50 00 

 No. 2, 10 ft. " " 500 " .... 65 00 



No. 3, 12 ft. Turbine Mill, weight 700 Ibs. . . .$90 00 

 12 ft. " " (direct action) .... 80 00 



