A “level tread” horse power made by Appleton Mfg. Co., Batavia, Ill., driving a corn sheller.
Another level tread, this one made by the Ellis Keystone Agricultural Works, Pottstown, Pa., and owned by the Calvin family, Radnor, Ohio.
A Buckwalter Champion one-horse, level tread power made by Shaeffer, Merkel & Co., Fleetwood, Pa., displayed at the Pasto Ag Museum, Rock Springs, Pa.
A small dog treadmill intended to power a churn, cream separator, grindstone or fanning mill. The unit was probably made by the Vermont Farm Machine Co., Bellows Falls, Vt., and is owned by the Calvin family, Radnor, Ohio.
The Westinghouse two-horse tread power and No. 4 thresher from an 1886 Westinghouse Co. catalog. Sold as a set, this combination cost $525 (roughly $12,209 today). An elevator for bagging and tallying grain cost an extra $25.