Apparatus for constructing concrete walls

Claim 1

Apparatus for forming a concrete wall comprising a. a plurality of generally vertical supports spaced apart along both sides of the wall being formed, each support being located opposite to another support on the other side of the wall and detachably connected to said opposing support by a plurality of spacers some of which are contained in the wall previously formed, each support consisting of separate segments detachably joined together at their ends, and the lower portion of each support being held contiguous the surface of the wall previously formed by said spacers while the upper portion extends above the portion of the wall previously formed. b. a carriage mounted on each support with means for advancing the carriage upwardly along the supports as the wall is formed, c. a plurality of concrete casting assemblies located along and on both sides of the wall being formed adjacent its top, each assembly supported at its ends by two carriages on adjacent supports and each assembly having a generally vertical casting surface extending between the adjacent supports so that the assemblies and the supports together define a continuous mold extending on top of the wall into which concrete is poured, whereby as the concrete hardens the carriages and assemblies are moved upwardly on the supports to form a new level of wall and, at intervals, support segments are detached from the bottom of each support and attached to the top to provide a continuous track for the carriages, d. each casting surface comprises the inner surfaces of generally horizontal, plywood sheets which combine to form a continuous casting surface, e. each casting assembly comprising a plurality of generally horizontal braces positioned contiguous the outer surface of the plywood sheets to support the sheets while the concrete is setting against the inner surface of said sheets, and f. each casting assembly comprising at least a pair of slotted beams movably carried by adjacent carriages, said plurality of horizontal braces mounted between said slotted beams which are adapted to be wedged against said adjacent carriages, so that by wedging the slotted beams against the carriages the inner surface of the sheets are drawn into contact against the adjacent supports thereby providing said continuous mold.