Fig. 163 represents a Pitcher Spout Pump, of large size for contractors, and Fig. 164 the parts of a common house pump. The two figures show pumps substantially the same.
Fig. 163.
The smallest size “listed” of this pump has a cylinder diameter of 21⁄2 inches, fitted with 11⁄4 in. pipe and it has a capacity of ·09 gal. per stroke and it takes more than eleven strokes to pump a single gallon. With a cylinder 41⁄2 inches, with pipe 11⁄2 in. diam., the pump has a capacity of ·34 gal. per stroke.
Fig. 164.
The engraving 164 shows a pitcher pump dissected, in which A represents the lever or handle, B the plunger which contains the discharge valve and is made tight by a cup leather packing, C is the fulcrum for the lever, D the barrel or cylinder, E the lower or suction valve, F the base which supports the pump. The leather which forms the valve E also makes the joint between the cylinder and the base.
Fig. 165 represents a Two-Cylinder Suction and Force Pump arranged with extension levers. When these levers are put in place, they afford room for a large force of men to work, renders this pump a most powerful engine for throwing water on fires, or supplying it for many uses about factories, warehouses, wharves, etc.