Patents of Interest to Builders.

Progress, Volume XV, Issue 1, 1 September 1919, Page 608

Patents of Interest to Builders.

Building Construction —Mr. E. W. de Montalk has taken out a patent (No. 41400) which relates to the construction of buildings, and provides a construction in which parts made of concrete are united without the use of mortar or cement, so that a building can be dismantled and re-erect-ed upon a different site. The invention consists in the combination with studs having means of retaining horizon-

tal members, or approximately horizontal members, of cov-ering-members which form the exterior and interior facings of a wall, the covering-members having flanges or ribs whereby the same are affixed by. means of pins passing through the flanges or ribs to engage grooves formed in the horizontal members. The horizontal members may be battens, beams, or the like, and the covering-members may be sheets, boards, tiles or the like.

Concrete Building Construction— Another patent, No. 41509, has been taken out by Mr. dc Montalk, for concrete building construction. According to the invention, the framing parts, also the slabs or the blocks employed, arc made with projecting metal rods, wires, loops, or meshing, and with or without perforations therein whereby any two or more parts can be. secured together. Also rafters and other fram-ing-parts arc formed with holes in their faces, to take dowels.

I pins, wedges, or the like for holding any other part or parts in position. Other features' consist in providing specially formed angle floor, and roof pieces, rebated and (or) tongued and grooved for fitting together, extensible framingparts, a rafter and ridge holder, flashings for chimneys and the like, ties, . gutters, valleys, and downpipes, all moulded in concrete so as to facilitate their being placed and secured in position. Concrete Roads, Floors, Etc. John Wilson, of Eemuera, Auckland, has taken out a patent, No. 40278 for an invention which has for its object the facilitating repair ;of roads. A foundation is made of concrete in the ordinary way. k course comprising material weaker than concrete is laid upon the base or foundation. The weaker material must be of such a nature that upon removal of the wearing-surface the weaker material will come away without damaging a disturbing the base or foundation. The wearing-surface is finally laid upon the course of weaker material. The course weaker than concrete consists of one part of well-seasoned finely ground hydraulic lime and not more than two parts of good clear sand. These ingredients arc mixed together, and then water is added until the'mixture is sufficiently plastic to be applied by a broom upon the surface of the concrete base of the road or floor. •