Windmill

Details Windmill Windmill

1983-06-23

1986-01-28

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Sustained ancillary movement of rotary working member

Responsive to gravity or working fluid force

416119, F03D 306

Patent

active

045668531

ABSTRACT:
A vertical axis windmill with a plurality of horizontal arms (16) mounted on an upright central axis (12) so as to rotate in a substantially horizontal plane. Each arm (16) has hinged at its free end a blade 18 which is downwardly depending. Each blade 18 being mounted at an angle of pitch to the respective end of the arm (16) of from 20.degree. to 80.degree. and also mounted at an angle of tilt to the end of the arm (16) of from 5.degree. to 30.degree.. Preferably, each blade (18) comprises one or more paddles (14) hinged to one or more frames (15).

REFERENCES:
patent: 193954 (1877-08-01), Hodges
patent: 197457 (1877-11-01), Clark
patent: 590753 (1897-09-01), Flaig
patent: 833593 (1906-10-01), Espinosa
patent: 1162912 (1915-12-01), Gulley
patent: 4415311 (1983-11-01), Grana et al.

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