Printing; a practical treatise on the art of typography as applied more particularly to the printing of books; (1890)
Jacobi, Charles Thomas, 1853-1933 · London : G. Bell and sons · leaf 233
ediate use. They can be started and stopped momen-tarily, and they can be placed in the machine-room withoutdetriment. A good plan is to have them boxed in with 208 PRINTING. glass sides, which keeps them free from dirt and dust.The principle of these engines is : an admixture of gasand air in the… … Fit,. IiT. reckoned one of the safest and most reliable engines pro-pelled by gas which have been offered to the trade. The Bisschop, fig. 121, is another form of gas engine,of French origin. It is only adapted for small power, and isof the vertical pattern. The principle of power emittedis much…
Printing
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