Guardian Fire Extinguisher.
Of all the many devices and chemicals devoted to fire extinguishment none is more effective than that manufactured by the Cannon Granite Torpedo Company of Pittsburgh, Pa. This extinguisher employs two methods: One of these is an air pressure, which is automatic. The other is a never-failing pump, which is mechanical. The discharge pipe or tube, to which the hose is attached and through which the fluid must pass, is a single, double-acting pistan pump, of the waterpacked piston type. The mechanism of this pump is such that when the piston or handle of the pump is turned to release the pressure, the same movement turns the receiving valve upon its seat once and a half round, so no time is lost. If the internal pressure of compressed air is weak or lost altogether, the necessary force is added by simply working the piston up and down, a stroke of from six to eight inches.
The pump immediately fills, and force is supplied to throw a solid stream forty-five feet. The force is remarkable. H. E. Safford, one of the general agents of the company, is from Pittsburgh, and is recognized as an authority on the subject of fire extinguishment and appliances.