Improvements in Propellers.


23,264. Woodward, E. Oct. 21. Screw and like propellers.-Propellers for use in water or air consist of helical blades 3 having their outer edges connected to triangular pieces 4 forming parts of a cylinder and united by a wired edge 9. The pieces 4 may be bent slightly outwards at 6 and the leading edges 7 of the blades may be strengthened by bending them to form a lip. Specification 3045/97 is referred to.




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Cited By (2)

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    US-3782857-AJanuary 01, 1974O SvilansDevice for air and fluid acceleration and method of making same
    US-7128655-B2October 31, 2006William JonesPutting practice golf cup