Lewis sanding the hub on a propeller—Day 3 of the task—meant for a Lycoming engine. The business: Culver Props specializes in making custom, fixed-pitch, two-blade, wood propellers.

Wood-croft, whose screw of an increasing pitch, as modified, is now in general use in the English navy, and on all the propellers in Britain, ob- tained his patent in 1832, and Smith for his ...