GB541425A - Improvements relating to water-closet basins - Google Patents

Abstract

541,425. Moulding water closet basins. TWYFORDS, Ltd., and BAILEY, E. H. June, 24, 1940, No. 10775. [Class 26] [Also in Group V] In the manufacture of a syphonic water-closet basin of the kind comprising a bowl or basin 3 formed integral with a supporting pedestal 4 that encloses or contains within its forward part a trap system consisting of a rising leg or passage 8 extending upwardly and forwardly and forming at the front a downwardly directed leg or branch leading into an horizontal outlet 10, a cavity or hollow space 15 between the two legs or passage, the surrounding walls of the cavity are moulded by a mould having a transverse core which conforms to the contour of the cavity and being permanently carried by one or two separable side members of the mould, the open side or sides of the cavity being subsequently closed by a separate closure member or members. The mould comprises a top member 16, shaped on its underside to conform to the wall 13 forming the lower part of the leg 8 and the top wall of the cavity 15, and a bottom member 17 shaped to form the lower wall of the leg 9 and the passage 10, the side members 18 forming with the members 16 and 17 the main wall of the basin 3, the pedestal 4, the web 7- and the outlet 11. Clay slip is poured into the mould by a funnel 20 filling an orifice 19, a removable plug 21 being provided in a chock 22 for removing surplus clay after a deposit of sufficient thickness has adhered to the interior surface of the mould. To form the cavity 15, each of the side members 18 is provided with a projection 23, Fig. 4, which are tapered and meet to form a core, and are provided with a continuous stop or shoulder 24. The openings in the side of the body are afterwards closed by separating moulded plates 26, Fig. 6, which are seated upon the shoulders 25, Fig. 5, of the cavity 15 and lie flush with the outer surface of the basin 3. The member 17 is provided with an upstanding projection which produces a recess 28 open on the underside of the basin 3 and provided on the top with a vent 29 for the escape of air when the basin is fired. In a modification the cavity is formed by a projection secured to one of the members 18 thus forming the cavity open at one side only. The usual flushing ring 1 and a rear platform or shelf 2 for supporting a cistern, and the plate 12 for forming the leg 8 are inserted in the moulded basin before the latter is fired.