A Lightning 2-horse hay press ad from an 1890 Farm Implement News. It appears the team had to step over the operating rod of the baler, which is rather high.
A stationary wooden platform
The Dingee-Woodbury type sweep power from the 1893 catalog of the C. Aultman Company, Canton, Ohio. The Woodbury and Dingee patents were used by several sweep power builders, including the J.I. Case Threshing Machine Company.