The Hopto name originated with the Badger Construction Equipment Company, a subsidiary of the Warner & Swasey company. The first Hopto machine was a tractor mounted hydraulic backhoe - Hydraulically Operated Power Take-Off. The Gradall brand was also owned by Warner & Swasey who bought the rights to the design in 1946 from the Gadall's designer Ray Ferwerda of Cleveland Ohio. When introduced in 1972 the Hopto 1900 was the largest American hydraulic excavator. The machine weight 100 ton with 2 GM 8V-71 Engines of 300 hp.
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