US 4,067,158 AGranted

Towing A-frame structure for prefabricated building

OwnerRobert Raymond Lawrenceinventor

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Abstract

A metal "A" frame structure capable, upon attachment, of towing a prefabricated building of, primarily, conventional frame construction. Metal "A" frame utilizes two identical leg members which attach to load distributing members that transmit the relatively heavy concentrated loads into the sides and front of the prefabricated building without introducing over stress. Interconnection of the various metal parts of the "A" frame is selectively accomplished by welding and bolting so that the "A" frame may be easily installed, removed and stored when not in use. The load distributing members which deliver the concentrated loads into the prefabricated building "box" may be adjusted in height, in the case of the front wall of the side walls in order to apply the loads at at the most structurally advantageous locations on the "box".

In combination, a prefabricated building and a towing "A" frame structure comprising

a. a prefabricated building having an elongated body and which is structurally suitable for being towed by means of said towing "A" frame along a line parallel to the longitudinal axis of said building,
b. a towing "A" frame structure attached to said building at the forward end of said building, said "A" frame comprising,
1. two longitudinally elongated leg members lying in the same horizontal plane and lying at an angle relative to one another,
2. a front load distributing member, horizontally disposed lying perpendicular to the longitudinal axis of said prefabricated building,
3. two identical load distributing side plates of rectangular shape lying in a vertical plane, parallel to each other and separated by a distance substantially equal to the width of the prefabricated building.
4. means connecting said leg members to load distributing side plates said means being by attaching said leg members to vertical gusset plates by bolts and connecting said vertical gusset plates to horizontal gusset plates by welding and connecting said horizontal gusset plates to said load distributing side plates by welding,
5. means connecting leg members together at their apex said means being by bolting, welding or riveting said leg members to a trailer hitch coupler,
6. means connecting load distributing front member to said leg members said means being by connecting said leg members to height adjusting brackets by bolts, rivets or welding and connecting said brackets to said load distributing front member by bolts at two locations along the length of said load distributing front member,
7. means connecting load distributing front member to prefabricated building, said means being by connecting said load distributing front member to prefabricated building by lag bolts, screws or bolts,
8. means connecting load distributing side members to prefabricated building, said means being by connecting said load distributing side members to prefabricated building by lag bolts, screws or bolts.

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Abstract

Claims1