Fire Engine Small 223×320 Medium 445×640 Large 712×1024 Download Tiff Original 1669×2400 | (480.2 KB) Description "The fire engine is a modification of the forcing pump. It consists of two such pumps, the pistons of which are moved by a lever whith equal arms, the common fulcrum being at C." -Comstock 1850 Keywords engine, fire, forcing, pump Galleries Miscellaneous Industrial Machinery Source: J. L. Comstock A System of Natural Philosophy: Principles of Mechanics (: Pratt, Woodford, and Company, 1850) 163
