r of sculls, or even a canoe paddle. The and connected therewith by a ball joint, as shown in conducts electricity relatively well. Living wood is a electric propeller, working snugly in the wake of the the sectional view, is a screw which extends through a much better conductor than dead. The… … A PORTABLE ELECTRIC PROPELLER FOR BOATS. A FOLDING INVALID CHAIB. gear in mesh with a pinion on a short shaft whose other end has This very simple form of chair, to circumstances where a boat has to be handled inafa bevel gear connection with a shaft extending up facilitate carrying invalids in…
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