Girder trolley

A girder trolley includes a carrier member 4 and a suspension member 24 that are movable axially relative to each other, a pair of support members 10, 11 pivotable on the carrier member, and means e.g. links 21, 22, pivotally connecting the support members to the suspension member, whereby movement...

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Bibliographic Details
Main Authors WILLIAM BRUCE CRITCHLEY, WILLIAM DEREK NEWMAN
Format Patent
LanguageEnglish
Published 24.04.1985
Edition4
Subjects
BUILDING
BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE
DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
FIRE-FIGHTING
FIXED CONSTRUCTIONS
FORMS
HANDLING BUILDING MATERIALS ON THE SITE
HUMAN NECESSITIES
LIFE-SAVING
REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS
SCAFFOLDING
SHUTTERING
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Summary:A girder trolley includes a carrier member 4 and a suspension member 24 that are movable axially relative to each other, a pair of support members 10, 11 pivotable on the carrier member, and means e.g. links 21, 22, pivotally connecting the support members to the suspension member, whereby movement of the suspension member relative to the carrier member in a direction away from the support members causes movement of the support members towards each other. The support members may be furnished with rigidly attached arms 8, 9 and with rollers 14, 15 that engage with the web and lower flanges of an I-section beam 2. The trolley may serve as an anchor for a safety line attached to a person working on a steel structure. Alternatively, one of the support members is fixed relative to carrier member.
Bibliography:Application Number: GB19830024834