Recent Building Patents

Progress, Volume XII, Issue 6, 1 February 1917, Page 881

Recent Building Patents

Flooring and Lining Cramp.A patent No. 37,965 has been granted to James Upchurch of Marton, N.Z. for an invention relating to a flooring and lining cramp. It has hitherto been proposed to form a cramp of this class with an eccentric cam mounted to pivot on a saddle-frame, and provided with a handle for turning it, which handle is made integrally with such cam. This construction is open to disadvantage that in working the cramp enough space must be left between the point at which it is working and the wall, or floor, or ceiling, as the case may be, to allow for the swinging of the handle. Con-

sequently it is only possible to work up to a distance from the edge that is slightly greater than the length of the handle. With the present invention, it is stated, this disadvantage is overcome. According to this invention the cramp is composed of two parts and a loose handle. One part consists of a saddle-frame adapted to fit over the joist or stud and having an extension-plate on its side. The other part consists in an eccentric cam that

is mounted on the face of the extension of the first part so as to move round thereon. It is formed with a stud projecting from its outer or top side, and which stud is adapted to receive a handle by means of which the cam may be turned and caused to engage with its eccentric face against the edge of a board laid on the joists or studs, and press such board away.

Metal Window Frames Etc.— patent No. 1591 lias been taken out by A. Woolnough of Dunedin. In this invention bars of three different sections are utilized. To form framing, glazing bars, and the like.

The flanges 9, 10 which carry the glazing bars 5 are screwed together to form a transome or mullion. Various arrangements utilizing the bar sections are also shown. Lock Back Brick for Fireplace. — patent, No. 36,921, has been taken out by John McKissack Reid of Luke’s Lane, Wellington. It consists of a brick the upper corners of which are cut away, and an angle recess is thus formed in

them. The side bricks have projections, conforming to the shape of the recess, in the top part of the top back brick. The projecting portions of the side bricks fit into the recess of the top buck brick, ■which is thus retained in position. Concrete Building Slab or Sheet.—A Patent No. 37,957 has been taken out by John Knowlson of Melbourne. This invention consists of an improved concrete slao or sheet adapted for building purposes, as, for example, in the construction of walls, partitions, ceilings, roofs, fences, and the like, and particularly when it is desired that same shall be ornamented by panels, flutings, bands, or like designs in relief on one or both sides. Accordingly the sheets are formed on each side with recesses of predetermined design or pattern, so arranged that a recess on one side is opposite

a flush face portion on the opposite side. The sheets are made of moderately coarse concrete composed of cement with ashes or coke-breeze and screenings of about i-in. gauge, so that a rough surface suitable as a good key is provided for the other coats of concrete, cement, mortar, or the like that may he plastered on to produce flat surfaces when required. If the patterns on the sides of sheets are not required, the recesses, when the sheets are erected, are filled in with concrete of the same composition as the sheets, go that a solid wall or the like is provided. In some eases

the panelled design is left on one side only, in which case the recesses on th*e opposite side are filled in flush with the surface of the sheet, after which both sides receive the finishing-plaster coats. The sheets may be reinforced by metal rods or other well-known mediums for this purpose, and the sheets may be connected together by means of the metal rods which are preferably embedded in the sheets during manufacture.