Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 119
i\&feed to the drill. By a simple piece of mechanism at N the connectionof the shafts K and i can be broken, and the handle o made to communi-cate a more rapid movement to 1, so as to raise up the drill in a position to … Fig. 31.— WhitwortKs Drilling Machine. begin its work again, or to bring it quickly down to the work, and then thearrangement for the self-acting feed is again brought into play. By turning-the wheel, P, the table, Q, on which the work is fastened, is capable of being:raised or lowered, by means of…
Inventions
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