Amateur mechanics ... a book for old and young who like to make things .. (1907)
Popular mechanics magazine, Chicago. [from old catalog] · Chicago, Popular mechanics · leaf 72
. wide and a little less thanthick, so that it will run free betweenthe sides (Fig. 5; when they areplaced. Cut two grooves, one ineach end, 1 in. deep and l/z in. wide.In these grooves place wheels, CC, toturn on pins of stout wire. Thesewheels should be f< in. in diameter.When placed in the… … Details of Rotary Pump wheels fit too tight, they will bind; iftoo loose, they will let the air through.Bore a hole through the middle ofthe wheel-holder and insert the crank- IUll I.AK MECHANICS pin, D, which should be about i in.in diameter. The crankpin should fittight; if i brad slipping.In…
Handicraft · Amusements
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