F - Mech Eng,Light,Heat,Weapons – 03 – D
Patent
F - Mech Eng,Light,Heat,Weapons
03
D
170/22
F03D 7/04 (2006.01) F03D 1/06 (2006.01)
Patent
CA 1132052
ABSTRACT OF THE DISCLOSURE A tapered blade for use in a windmill comprises a main spar or beam assembly having top and bottom flat sheets of metal. Tapered angle strips are welded along the edges of the sheets. With the sheets and strips twisted to the proper angles, they are joined together by shear web chan- nels welded along the edges of the strips. Leading and trailing edge assem- blies, comprising primarily foam material, are bonded to the spar. A fit- ting is provided to permit the blade to be attached to the mechanism to be driven on the windmill. The generation of electrical energy by windmills is well known. In such windmills, energy is generated by the wind being slowed down by propeller blades which are suitably connected to rotate and respond to wind movement. Power from windmills has been used for pumping water on farms, for example, as well as furnishing electrical power for other purposes. The number of blades used may vary in accordance with the particular application. A propeller type two blade mill generally collects more power from the air than many multi-blade types. This type is relatively light and has been used commercially in wind driven electric generating plants.
354084
Budd Company (the)
Fetherstonhaugh & Co.
LandOfFree
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