The boy's own book of indoor games and recreations : a popular encyclopædia for boys (1890)
Stables, Gordon, 1840-1910, Hutchison, George Andrew, 1841-1913 · Philadelphia : J.B. Lippincott · leaf 137
at the diameter of the crank-pin, and the cap securedby two screws. The crank-pin is marked e. It is steel riveted into the disc whichforms the crank. A crank-arm would do equally well, and the disc is shown simplyas illustraring a different plan. The disc f is fixed on the crank-shaft either… … will be if properly bored with a suitable tool. A long bearing has no more frictionthan a short one, though a contrary opinion seems to be prevalent. A small holefor supplying the oil necessary for lubrication should be made near the middle ofthis bearing. The same remarks apply to the bearing h…
Games · Amusements
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