George W Swisher Jr, Don W Smith, Gary L Westphall: Material transfer mechanism. CMI Corporation, Dunlap Codding and McCarthy, December 14, 1976: US03997277 (77 worldwide citation)

An improved material transfer mechanism comprising a selectively variable speed hydraulic power assembly having an output connected to and powering a material conveyor. A double acting hydraulic ram positions a swash plate control lever that determines the rotational speed of the output shaft, and a ...

Jack C Stone: Granular-floor supported cargo hauling trailer apparatus construction. Dunlap Codding and McCarthy, April 19, 1977: US04018480 (25 worldwide citation)

An improved trailer convertible to one position for hauling floor supported cargo and to one other position for hauling granular material. The trailer has a floor assembly including; a pair of center floor panels which are supported on the trailer frame and form a portion of the floor supporting str ...

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