E - Fixed Constructions – 04 – B
Patent
E - Fixed Constructions
04
B
20/1.1
E04B 1/00 (2006.01) E04B 2/00 (2006.01)
Patent
CA 1312438
ABSTRACT A method for constructing render jacketed, rammed earth walls for buildings which utilizes a rectangular container which functions as a mould and also a hopper and skip, the container has an open top and a bottom closable by two trapdoors maintained in inclined closed position up from the bottom by cam trapdoor-retaining bars releasable by hand pull rods attached by retainer chains; the container is removably carried with trapdoors closed upon a rubber-tyred, wheeled, ground level trolley during level-filling with loose earth; two, three-sided trays of lateral dimensions substan- tially equal to those of the container are level-filled with a powdered cement/sand render mix of low moisture content and stacked upon the container, each end of which is provided with a pair of pivot brackets of unequal length which respectively have a hole for detachable fixture of render trays to the container, the filled container and trays are lifted by a hoist and lowered into a wall mould formwork of plywood panels, the external lateral dimensions of the container being sufficiently less than the internal dimensions of the formwork to create outer or veneer moulding cavities. When the container rests upon a concrete footing, or previously rammed earth layer, the trays are tipped in mutually opposite directions in a vertical arc to put the loose render into the veneer mould cavities between formwork members and the container; the trapdoors are opened by undoing chains then freeing retainer rods to allow cam retainer bars to fall, the trapdoors opening under the weight of loose earth, the container is lifted and loose earth pours out between outer render layers which are rammed simultaneously with the earth as a core to obtain a rammed earth, render jacketed, integral mass.
606754
Macrae & Co.
Novotny Jan
LandOfFree
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