Wind′ing-en′gine.
(Steam-engine.) A hoisting steam-engine. In the portable form (shown in Fig. 7227), the boiler and furnace are contained in an upright plate-iron case. The drum a on which the rope winds is rotated by a gear-wheel, into which meshes a pinion on a shaft carrying a disk b, having a wristpin, to which is attached the connecting-rod of the steamcylinder c. Fig. 7228 is an English winding-engine, adapted for small mines. The engine is of the usual size, with a Cornish boiler. The ore is raised by a double drum with a wire rope, one kibble being raised while another is lowered. A second shaft has a crank on its end for working the pumps by means of the balance-beam. The pumping and winding arrangements may be thrown in and out of gear, so that either may be worked singly.