This section is from the book "The Tinman's Manual And Builder's And Mechanic's Handbook", by Isaac Ridler Butt. Also available from Amazon: The Tinman's Manual And Builder's And Mechanic's Handbook.
Solid. Metal round brass equal to 1-2 diameter of bearing.
General thickness web, etc. equal to 1-4 diameter of bearing. With feathers. Width at lightest equal to diameter of bearing. Thickness equal to 1-6 " "
 
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