. The universal assistant, and complete mechanic : containing over one million industrial facts, calculations, receipts, processes, trade secrets, rules, business forms, legal items, etc., in every occupation, from the household to the manufactory. iOZ3.; of nitrate of potassa (saltpetre), 1 oz., and of chloride of sodium (j^aJtJ,6 OZ8. Thes<» quantities and proportions are stated as being what I r gard a- practicallythe best, bat it is manifest that they may be alightly changed without departing tns^Che principles of my invention., 674 XACHIXISTS, E:7QI^££BS, AC, SSCfilFXt,. OLIVEB EVANS,
. The universal assistant, and complete mechanic : containing over one million industrial facts, calculations, receipts, processes, trade secrets, rules, business forms, legal items, etc., in every occupation, from the household to the manufactory. iOZ3.; of nitrate of potassa (saltpetre), 1 oz., and of chloride of sodium (j^aJtJ,6 OZ8. Thes<» quantities and proportions are stated as being what I r gard a- practicallythe best, bat it is manifest that they may be alightly changed without departing tns^Che principles of my invention., 674 XACHIXISTS, E:7QI^££BS, AC, SSCfilFXt,. OLIVEB EVANS, the Watt of of the High-Pressore Steam Engine. In 1793, Olirer Evans, a native of Kewport, Delaware, invented the H!gh>praRsore Engine, and in 1S04 he constmcted an engine in Philadelphia, woridnffon the high-pressnre system, and placed it on a large scow mounted on shown in the following cat. Althongh the whole weight was eqnal to 2U0barrels of floor, yet hLs small engine propeUe<i it up Market street and roond thecircuit to the Water Works, where it was launched into the Schuylkill. A pcuidle-wheel was then applied to its stem, and it thus sailed down that river to theDelaware, a distance of 16 miieA, in the presence of thousands of spectators. In milling appliances, he invented the erain elevator, the conveyer, the driU,the descender, and the hopper-boi. besides ether labor-saving inventions of greatutility to the miller. He also wrote the Yonng Steam Engineers Gnide, anda highly valuable work entitled The Young MiUwrights Guide. Althou
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Keywords: ., bookcentury1800, bookdecade1870, booksubje, booksubjecttechnology
