US 4,340,240 A · Three point hitch adaptor for a tractor

Abstract

An adaptor for attachment to the three point hitch of a tractor enabling attachment of various implements regardless of implement attachment point spacing. A base member adjustably carries coupling means at its lower sides positionable to coincide with the spacing of the implement attachment points. A vertically positionable hook receives the attachment pin carried at the top of the implement A-frame. Locks automatically confine the implement attachment points against dislodgement. A lock control enables lock release from the tractor driver's station. A hydraulic cylinder is in inclined, intercoupled relationship with the adaptor and tractor to impart both upward and downward powered movement to the adaptor. Lift forks may be attached to the adaptor. Ball hitch members on the adaptor enable towing of various types of trailers.

Claims2

Dependent claims

An adaptor for attachment to the three point hitch mechanism of a tractor enabling hitch support of various implements, said adaptor comprising,

a base member including aligned tubular segments and adapted for coupling both to the hitch arms and top link of the three point hitch mechanism, and
first coupling means carried within each of said segments at the opposite lower sides of said base member and extensible therefrom for adjustable locking engagement with an implement, second coupling means adjustably disposed centrally on said base member above the first mentioned coupling means for implement engagement, said first coupling means removably mounted in said tubular segments, said base member defining upright sockets, lift fork arms each having an upright portion adapted for mounting in a removable manner within one of said sockets, means for locking each lift fork portion to said base member.

Dependencies are inferred from the claim text.

Three point hitch adaptor for a tractor

Life of this patent

Three point hitch adaptor for a tractor

Life of this patent

Abstract

Claims2