Hydraulic winch system for use in erecting clear-span, pole-type

Details Hydraulic winch system for use in erecting clear-span, pole-type Hydraulic winch system for use in erecting clear-span, pole-type

1989-07-24

1990-07-24

Murtagh, John E.

Static structures (e.g., buildings)

With lifting or handling means for primary component or...

Position adjusting means; e.g., leveling

52 66, 521265, 52745, 52749, E04G 2114

Patent

active

049427016

ABSTRACT:
A hydraulic winch system for use in erecting clear span pole type buildings including two rows of spaced apart, vertically placed poles defining opposite sides of the building, and a plurality of roof supporting truss assemblies arranged side-by-side and each assembly supported by cooperating pairs of opposed poles. The system includes a hydraulic motor-driven winch; a portable base mounting the winch and transportable from pole to pole; pulleys mounted at the top of each pole; a cable mounted on the winch, reeved about the pulleys and extending downwardly with its end adjacent the truss assembly preliminary to hoisting the same to its erected position; and connecting means on the end of the cable for connection to the truss assembly. Using the winch system, the component truss assemblies of the building are hoisted one at a time from a low level building-assembly position to an elevated building-erected position where they are affixed to the tops of the poles, preparatory to mounting the roof thereon.

REFERENCES:
patent: 2604060 (1952-07-01), Hansen
patent: 2715013 (1955-08-01), Slick
patent: 2836054 (1957-11-01), Brauer
patent: 3396944 (1968-08-01), Jansz
patent: 3449872 (1969-06-01), Craighead
patent: 3921362 (1975-11-01), Cortina
patent: 3968618 (1976-07-01), Johnson
patent: 4251974 (1981-02-01), Vanderklaauw
patent: 4679374 (1987-07-01), Boehmig
patent: 4697397 (1987-10-01), Okuda et al.
patent: 4831792 (1989-05-01), Berger

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