Abstract: A portable support for a scaffold comprising first and second wheeled support members which are adapted to be placed on the building roof. The support members are interconnected by length adjustable braces to enable the distance between the support members to be varied. Handrails are also provided on the wheeled support members which extend therebetween to enable the entire assembly to be easily moved as a unit. The first support member has a plurality of upstanding posts secured thereto for selectively vertically receiving one end of an elongated scaffold support arm. The second support member has a pair of posts secured thereto and extending upwardly therefrom for receiving the scaffold support arm therebetween. The scaffold support arm is also length adjustable to enable the distance between the support members to be varied.

Abstract: There is disclosed a retractable suspended scaffolding mounted on a self-propelled truck which is particularly adapted for maintanence work on structures that are situated along roadways and at areas of difficult access. The scaffolding includes an operating gangway that is arranged in posiiton below the planking of a bridge, a viaduct or the like, by means of a set of mechanisms that are operated by oleodynamic jacks, hydraulic motors and manually controlled reduction units.

Abstract: An assembly line method of prefabricating brick panels in a factory for shipment to the intended site of use includes the steps of mixing a supply of mortar in one area of the plant, placing the mortar in a plurality of pressurized containers which are mounted on a rack located adjacent to the mixing area, delivering each of the pressurized containers and a supply of bricks as required for placement on a horizontally and vertically movable platform, advancing the platform in a direction along the side of a workbench, placing a first row of bricks on the workbench as the platform is advanced in the first direction, reversing the movement of the platform so that it returns in a second direction opposite to the first direction, dispensing under pressure a continuous flow of mortar from each pressurized container along the top of the bricks in the first row, again reversing the movement of the platform to advance in the first direction, and placing a second row of bricks on the previously dispensed mortar.