Churning with an Elastic Rod.
—The old-fashioned churn is set in motion by the aid of another kind of power, as seen in [Fig. 102]. A long, tough, flexible stick is fastened into the cross-beam in the ceiling, so that its larger end is held firm by two iron clasps. The elasticity of the rod is such that, when the smaller end is drawn down by hand, which, at the same time, moves the dasher, it rebounds, and thus saves considerable expenditure of power.
Fig. 102.
Churning with the Treadle Lever.
—In many places the churn is put in motion by the feet, as in [Fig. 103], where several levers are united to produce the upward and downward motion of the dasher. The longer arm of the lever is connected with the churn, and the shorter is set in motion by a foot-board. The foot-board lies on a roller, with its longer part attached to the lever; and by throwing the weight of the body upon this part the shorter arm of the lever is drawn down, and the longer, attached to the churn-dasher, is raised. The mode of operation is so plainly seen in the cut as to need no explanation.
Fig. 103.
Among the more ingenious contrivances used for churning in Holland belongs the churn invented by Fürst. The body is somewhat similar to the barrel-churn, but is smaller; and it is of uniform diameter throughout, as in [Fig. 104]. It is covered with a wooden lid, furnished with a convenient handle, and stands on a low platform, to which it is fixed, when in use, by means of a screw, k. The motion is communicated to the dasher by means of a wheel, or windlass, and an endless cord.
