THE AMERICAN STEAM FIRE ENGINE.
The number of appliances and special devices used on and about a steam fire engine is not large, as it is the aim of both designers and builders to simplify the machine as much as possible without diminishing its efficiency.
Fig. [434] is an appliance known as the Siamese connection. It is used for stand pipes attached to the outside of buildings, etc., and also as a detail of the fire pump. Its use is to lead off two lines of hose.
The valve shown in the figure, closes automatically in case of stoppage of one of the engines or the bursting of the hose.
Figs. 434, 435.
Fig. [435] exhibits an approved form of strainer for the bottom of the suction pipe.
The American steam fire engine pump is shown in Figs. [431] and [432].
Fig. [431] being the front view, one side of it shown in section, exposing the interior parts for explanation, and Fig. [432], representing the side elevation, also in section.
The pumps, which are double acting, are united in a gun-metal casting, which forms a single body for both, and permits them to be placed much closer as to centers than could otherwise be done. This method provides an ample suction-chamber which is common to both.