The drop oil cups for lubricating the cross head pin are located so as to have the drop “picked” off just as the cross head completes its stroke at the cylinder end, and while it is travelling at its slowest speed. The oil, as it leaves the wearing surfaces of the pin, is conveyed to the lower slide.
Fig. 3388.
Fig. 3389.
[Figs. 3388] and [3389] show the parts that connect the eccentric with the valve. The method of connecting the rod to the eccentric strap is convenient. The lower joint in the eccentric strap is set up tight, metal to metal, and the upper joint left open 1⁄8 of an inch.
STEAM FIRE ENGINE.
In a steam fire engine the prime requisites are rapidity of getting up steam and efficiency with lightness, economy of fuel being a secondary consideration.