Where there is a sufficient supply of moving power, a churn with two dashers is sometimes attached, as shown in [Fig. 108], in which case one dasher moves down while the other is raised.
Fig. 108.
A large and strong dog is required, and he is easily taught to keep to his work, by beginning with short trials, and gradually lengthening them. A steady and uniform step is necessary, and this will soon be acquired. The dog is sometimes left free, and sometimes tied by a line.
Fig. 109.
Fig. 110.
Churning by Horse-power.
—On large farms and in extensive dairies the churning is done by horse-power, as shown in [Fig. 109]. The form of the churn itself is optional in this case, also. The size of the wheel varies, but it is seldom less than nine or ten feet in diameter, furnished with cogs on the upper surface, which are from four to six inches long, and play into a smaller wheel, the axle of which is attached to the dasher of the churn. A third and smaller wheel is sometimes introduced, as in [Fig. 110]. A quick and regular step is required of the animal, and a quiet and docile horse is always preferred. A horse adapted to this work commands a good price. Blinders are always used on the horse while churning.