Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 384
cylindrical or conoidal in shape, with caps groundon, it might be made more generally useful. The inventor estimates thecost of production at six centimes per kilogram, which is about half acent a pound. This estimate supposes, however, that the sulphuric acidundergoes only a moderate depreciation… … 368 PARIS UNIVERSAL EXPOSITION. The apparatus in the Exposition was worked by hand. If constructedon a large scale and kept in continuous operation, it would require someform of motor to drive it. The inventor constructs several sizes of the apparatus, at prices increas-ing with their power.…
Machinery · Scientific apparatus and instruments
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![An illustration from Essai de physique, par Mr. Pierre van Musschenbroek ... avec une description de nouvelles sortes de machines pneumatiques, et un recueil d'expériences par Mr. J. v[an] M[usschenbroek] Traduit du hollandois par Mr. Pierre Massuet .. (1751)](https://img.insideoutlibrary.com/img/200/ia-essaidephysiquep01muss-480-77.webp)
