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Excerpt from A Text Book on Marine Motors: Being a Description of Most of the Leading Types of Various Marine Motors as Now Manufactured Practically all the oils that we use for these engines are derived from Petroleum or Rock Oil, which, like coal, is found ready made for us by nature, in a great many countries of the world; our chief supply comes from America and Russia. This petroleum consists of a great many different substances all mixed together, and the first thing the manufacturer does is to fractionally distil it, that is to say, by gradually warming it; first of all the light volatile oils pass off as vapour, and are condensed into suitable receptacles. On an average, American Petroleum contains about 16 per cent. Of these oils, whilst Russian Petroleum only gives 4 per cent. As the heat of distillation is gradually increased, the next substance to come away is what the Americans call kerosine and we here paraffin, that is the oil we use in our ordinary household lamps. American Petroleum gives about 50 per cent. Of this oil, whilst Russian only gives 27 per cent. As the heat of distillation is further increased, the heavy lubricating oils that we use for the cylinders of gas and oil engines, vaseline, and paraffin wax, &c., gradually come away and are separately stored for use. The light oils are now again distilled, and ultimately what we use here for engines, and known as Pratt's Motor Spirit or Petrol, is obtained and sent over here in air-tight tins. These contain two gallons and are sold at an average price of per gallon. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Szczegóły książki

Kategoria Książki po angielsku Technology, engineering, agriculture Transport technology & trades Automotive technology & trades

• Pełny tytuł: A Text Book on Marine Motors
• Podtytuł: Being a Description of Most of the Leading Types of Various Marine Motors as Now Manufactured (Classic Reprint)
• Autor: E. Du Boulay
• Język: Angielski
• Oprawa: Miękka
• Liczba stron: 176
• EAN: 9781332603879
• ISBN: 1332603874
• ID: 13536735
• Wydawca: Forgotten Books
• Waga: 245 g
• Wymiary: 229 × 152 × 9 mm
• Data wydania: 15. June 2016

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