GB282116A - Improvements in and relating to the coating of materials by metal spraying - Google Patents

Abstract

282,116. Cozens, F. G., and Metallisation, Ltd. July 17, 1926. Coating; coating non-metallic surfaces with metals. - In a method of externally coating elongated articles such as pipes, tubes &c. by the metal spraying process, the various operations for metal spraying by heating, sandblasting and spraying are carried out simultaneously by arranging each article in a separate compartment and rotating each article with its compartment so that it encounters in succession heating, sand-blasting and spraying devices angularly arranged with respect to each other. The tubes f<1> are secured between chucks e<1> mounted on spindles d<1> which are carried by the arms c<1> of two triform brackets mounted on a shaft b carried by supports a, a<1>. The spindles d<1> are rotated by gears g<1>, h', the gears g' being driven from pulleys i<1> around which a wire rope j<1> passes. One of the pulleys i<1> is mounted on the shaft n of a gear wheel k driven by a wheel l from any convenient source of power. The shaft n also carries a worm m which engages a wheel o on a shaft p carrying at its top a pulley g around which passes a wire rope r to which is secured a tool holder s adapted to slide along bars t, t<1>. Fastened on the shaft b and at the bisections of the angles between the arms c<1> are sheet metal members which form the separate compartments for the tubes f<1>. In operation the triform brackets are moved until one arm c<1> is vertically downward and heat is applied to one of the tubes f<1> by a burner not shown, to remove fat, paint &c. The spindles d<1> are then rotated and the work holders s are caused to travel along the bars t, t<1> and so treat the other rotating tubes f<1> to the sand-blasting or spraying. The rotation of the spindles d<1> is then stopped, and the triform brackets moved through 120‹, and the spindles d<1> rotated again whereupon the heating &c. is carried out as before.