Patents of Interest to Builders.

Progress, Volume XVIII, Issue 6, 1 February 1923, Page 143

Patents of Interest to Builders.

Casement Stay.A patent. No. 47,268, has been taken out which should be useful to builders. It relates to the ordinary type of window-casement stay in which a stay-bar is employed and hinged to the window casement and is combined with a locking pin that is fixed to the windowframe so that it may be locked to such pin at any point along its length, but relates more particularly to that class of stay in which the bar is formed with apertures in it at intervals, each of which is adapted to pass over the locking-pin on the window-frame. The invention consists in constructing the bar with a hinge attachment to the bracket by which it is fixed to the sash, such hinge

being of a nature such as to form a universal joint to allow of the bar bending or hanging from any angle, combined with the construction of the bar of two lengths arranged end to end to form the whole bar, and preferably each formed by about half the length of the full bar. These two lengths are hinged together in such a manner that the inner end is capable of turning down

on the outer end, and the hinge is so constructed that when the two lengths are turned into a continuous plane they may be locked together to form a rigid stay to be used when the casement is opened to half or more than half its extent.

Paint. —A patent, No. 47,362, has been taken out by S. R. Trevor, and J. E. Moosman, both of Auckland. The ingredients combined to form the composition comprise rubber, oil, and water, with or without pigments, or a combination of rubber, oil, and pigment. The composition can be made to serve as a paint vehicle, pigment carrier, or medium, or it can be produced in the form of a paint. Virgin rubber, caoutchouc, or incliarubber may be used in the manufacture of the composition, but the use of vulcanised rubber known as scrap or waste rubber is preferred in order that the loading content thereof may be made use of. The process of manufacture of a paint vehicle, pigment carrier, or medium consists in dissolving rubber in l'nseed-oil or in turpentine, kerosene, benzine, or other distillate suitable as a solvent, the rubber to be dissolved being equal to from 1 to 50 per cent, of the solvent. Water equal to not more than 75 per cent, of the dissolved rubber and oil is then added to the mixture, and provides a composition capable of serving as a paint vehicle, pigment carrier, or extender, to which can be added the usual pigments, oils, driers, and the like to form paints.