Mountable hoist
OwnerRaymond H. Schreiber, James Lamont Hagan, Jr.inventors
Life of this patent
Estimating the term…
Abstract
A hoist having an outer principal channel post and an inner secondary channel member, longitudinally movable therewithin, the secondary channel member being moved by a winch and cable and being adapted to travel longitudinally beyond the upper end of the principal channel post to allow heavy items to be elevated to a position in abutting relationship to, for example, a ceiling or roof. The hoist can be easily mounted to either the inside or the outside of a conventional pipe scaffolding to provide for the raising and lowering of building materials.
Claims5
A mountable hoist designed to be easily affixed to the outside, and in the alternative, the inside of a scaffolding structure, the hoist comprising:
- an outer principal channel member, having a longitudinal slot in one side extending the entire length thereof;
- mounting means fitted exterior of said principal channel member, said mounting means including a channel shaped sleeve having a longitudinal slot in one side extending the entire length thereof and a swivel mount attached to said sleeve opposite said slot, said principal channel slot, and said sleeve slot being aligned to provide an opening into the interior of said principal channel;
- an inner, secondary channel member of geometry conforming to said outer channel and sized to be movably received within the interior of said outer channel, for free sliding movement in a longitudinal direction relative thereto, said secondary channel also having a longitudinal slot in one side extending from the top at least a portion of the length of one side, said slot containing side of said secondary channel being diametrically opposed to said slot containing side of said principal channel when said principal and said secondary channels are in assembled relationship;
- carriage means including a base and an L-shaped support arm, said arm having a vertical standard and being removably mounted to said secondary channel by mounting means extending through said longitudinal slot in said principal channel, said carriage thereby moving simultaneously with said secondary channel in a longitudinal direction over the entire length of said principal channel, said secondary channel being further described in that it is generally equal in height to said vertical standard;
- a pulley means mounted to the principal channel at its upper end;
- a tension means cooperable with said pulley means and extensible within said principal channel and attached interiorly of said secondary channel at a point below its uppermost end, said tension means being sized to pass through said slot in said secondary channel to permit said secondary channel to project above the uppermost end of said principal channel;
- drive means for applying tension to said tension means to effect movement of said carriage.
Dependencies are inferred from the claim text.