Mobile outrigger for scaffolds

Claim 2

In combination with a scaffold and suspension means therefor, a vehicular outrigger movably mounted on tracks on the roof of a building for moving the scaffold alongside the building and around corners thereof, comprising a pair of spaced parallel trucks, each in the form of a beam mounted on a pair of casters having brake means for locking the casters in any selected position, a beam guide mounted on and transversely of each truck, a beam extending transversely of said trucks And telescopically fitted through said beam guides and including an extension to adjustably move said suspension means and scaffold towards and away from the side of a building so that said scaffold can be maneuvered around a building corner and clear all structural surfaces, each truck being strutted into said transversely extending beam by a pair of angular extending ties integrally secured at each end to said truck and transverse beam, respectively.

Claim 3

The combination recited in claim 1 together with reinforcing flanges on said truck adjacent the point of suspension of said suspension means and adjacent each of said casters to resist web crippling due to concentrated loads.

Claim 4

A pair of separate and independently movable outriggers, each of the construction recited in claim 1, each suspending a ladder of a pair of confronting ladders supporting said scaffold means, a plurality of selective weights mounted on the trucks on the inboard side of said outriggers for counterbalancing the weight of said ladders and scaffold means, and a chain for encircling and locking said weights on the inboard trucks.

Claim 5

In combination with a scaffold and suspension means therefor, a vehicular outrigger movably mounted on tracks on the roof of a building, comprising a pair of spaced parallel trucks each in the form of a beam mounted on a pair of casters having brake means for locking the casters in any selected position, a beam guide mounted on each truck, a beam extending transversely of said trucks through said beam guides and including a telescoping extension to adjustably move said suspension towards and away from the side of a building so that said scaffold can be maneuvered around the building corner and clear all structural surfaces, a beam underflange extending along and secured to the underside of said transversely extending beam, a pair of struts having one end pivotally connected to one of said trucks and the other end selectively pivoted at a plurality of positions in said under flange so as to provide a locus of possible adjustments of height of said transverse beam and so as to provide central, selective vertical clearances between said trucks to clear parapets and other obstructions in the roof.

Claim 6

In combination with a scaffold and suspension means therefor, a vehicular outrigger movably mounted on tracks on the roof of a building, comprising a pair of spaced parallel trucks each in the form of a beam mounted on a pair of casters having brake means for locking the casters in any selected position, a beam guide mounted on each truck, a beam extending transversely of said trucks through said beam guides and including a telescoping extension to adjustably move said suspension towards and away from the side of a building so that said scaffold can be maneuvered around the building corner and clear all structural surfaces, a beam underflange extending along and secured to the underside of said transversely extending beam, a pair of struts having one end pivotally connected to one of said trucks and the other end selectively pivoted at a plurality of positions in said under flange so as to provide a locus of possible adjustments of height of said transverse beam and so as to provide central, selective vertical clearances between said trucks to clear parapets and other obstructions in the roof.

Claim 7

The combination recited in claim 4 wherein vertically adjustable corner posts mount said beam on the ends of said trucks.