The Bender Machine Works in Hayward, Wisconsin, is a dairy equipment manufacturer that played a major role in the history of the dairy farming business in the United States from the 1950s to the 1980s, producing milk pipeline and milk transfer cart components, and washing/vacuum-releasing equipment.
The company continues to be in business but now focuses its manufacturing on private label electromechanical milk pipeline washing systems.
Washer/Releaser and Step-Saver
The Bender Washer/Releaser was a vacuum-operated device first invented and patented by Lloyd Bender of Hayward, WI, USA in the 1950s, used to both wash dairy milking equipment and to transfer milk from piping containing a vacuum, into a storage tank at normal atmospheric pressure.
As a non-electric pneumatically operated device, the washer/releaser could be used on small dairy farms without electricity that used an engine to supply milking vacuum, and used well water to cool milk.
The Washer/Releaser could be