Mechanical drawing self-taught: comprising instructions in the selection and preparation of drawing instruments. Elementary instruction in practical mechanical drawing. Together with examples in simple geometry and elementary mechanism, including screw threads, gear wheels, mechanical motions, engines and boilers (1889)
Fig. 313—Section of Pillow Block. the crank wheel has a circular groove around its out-side, and that a corresponding groove in the crankwheel projects over this groove. From this lattergroove an oil hole of liberal size extends, as shown, tothe surface of the crank-pin. Any oil placed at theupper…
Mechanical drawing
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