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Scientific American, Vol. 86, No. 7 (February 1902) (1902)

leaf 4

An illustration from Scientific American, Vol. 86, No. 7 (February 1902), 1902, leaf 4
to the liquid bath, one of the of two cells of dry battery, connected in series. If in the cut has a capacity of one ton a minute, and most incongealable is the ordinary gasoline of com- the lamp is properly lighted, a packing box which re- takes the place of six laborers who were heretofore merce,… … which the liquid air is let ing from the front of the box. PORTABLE COAL-LOADING MACHINE. fall drop by drop. For The longer arm of the switch is turned up to form this purpose the author a thumb piece, and is held normally out of contact employed in shoveling and screening. This capacity uses a…

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