The Rotolactor was the first invention for milking a large number of cows using a rotating platform.

[1] The rotating mechanical milking machine was first used by the Walker-Gordon Laboratories dairy and was put into operation on November 13, 1930.

[5] The Rotolactor was featured at the 1939 New York World's Fair in the Borden's exhibit.

[7] The farm building in Plainsboro containing the Rotolactor had an observation room to accommodate visitors, including large groups of school children.

'The Rotolactor' - hygiene's latest - automatically washing and milking 50 cows at one time in 12 1/2 minutes - inaugurated by Mr. Thomas Edison.