tus, and the mercury is in FIRE AND WATER INDICATOR. R. K. Teller. communication with the battery wires, the whole being ar- We illustrate herewith a novel fire and water indicator and ranged so that the rising of the mercury beyond the pre- alarm, which is the invention of Col. A. Gerard. It was '… … in the bumper, is prevented from being raised out of its ried through flush from end to end; it is double riveted, and AUTOMATIC SAFETY APPARATUS. bearings in the act of coupling or uncoupling, and is never- is lagged and felted and covered with plate iron and banded theless adapted to be quickly…
Patents · Munn · Patented · Scientific American · Iron · Fresh air · American export · Electric light · Years ago · Address munn · Trade catalogs · Gutta percha · American supplement · Wrought iron
Internet Archive · Public domain (published before 1931). Free to use for anything.
