Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 419
ig. 16), or, as in the more general prac-tice, by bushings consisting of thinsteel plates (as shown by the stippledpart in Fig. 17) set in each face ofeach knuckle so that they receive allthe wear and relieve the softer metal.In these plates are slight indentations(not stippled) which hold oil for… … Fig. 17. Steel Plate Bushing Usedbetween Butt Knuckles. -Q T
Architecture · Building · Carpentry
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