GB808347A - Centrifugal casting apparatus - Google Patents

Abstract

808,347. Centrifugal casting-machines. HERMAN PNEUMATIC MACHINE CO. April 27, 1955 [May 5, 1954], No. 34963/56. Divided out of 808,345. Class 83 (1). In a centrifugal casting- machine employing an openended mould, a carriage is movable axially of the mould and a pouring-spout is mounted on an indexable support on the carriage so that its outlet may extend into the mould. For simultaneously casting two pipes, two flasks 16, Fig. 1, are rotatably mounted in a holder 7, as described in Spceification 808,348. A carriage 69, fed axially by a fluid-pressure cylinder 72, slides on guides 68 and carries a cradle 77 indexable on trunnions 76 by fluid motors 75 to position the cradle either as shown in Fig. 5, with pouring-spouts 100 in an inoperative position, or as shown in Fig. 6. The cradle 77 carries a socket-forming core 102, as described and claimed in Specification 808,345, and also carries a sleeve 60 for supporting the end of a mandrel, 25 used for consolidating the sand in the flask 16. A hub 84 is also carried by sleeve 60 to form a socket recess 84<SP>1</SP> in the mould during consolidation, for forming moulds for the production of pipes having a socket at each end. When producing pipes having a socket at one end and a spigot at the other, sleeve 60 &c. is replaced by a sleeve 61, Fig. 3, for supporting the mandrel 25, this sleeve having a collar 66 for forming a spigot recess 66<SP>1</SP> in the mould, and a reduced portion 67 to form a metal-retaining wall 67<SP>1</SP> in the mould. Metal is supplied to spouts 100 from tilting or bottom-pouring ladles 103. Other features of the machine are described in the Specifications above referred to.