American School of Correspondence, Nelson, Hector William, 1869- [from old catalog] · Chicago, American school of correspondence at Armour institute of technology · leaf 23
good example on wliicli to work. The main facts to be borne in mind are that the single lever will raise or lower one box and the compound lever will raise or lower two boxes. A riser placed on the chain to actuate the single lever will lift the boxes from first to second ; a riser placed on the… … Fig. 111. Disconnecting Device. place, build as follows: To return from fourth to second a riser under the single lever ; fourth to first, a blank bar ; third to second a riser under the suigie lever ; second to first, a blank bar, fourth to third, a riser under the compound. The boxes are in the…
Weaving
Internet Archive · The Library of Congress · Public domain (published before 1931). Free to use for anything.
