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Alfred Hirst Marshall
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Publication of GB191323669ApublicationCriticalpatent/GB191323669A/en
23,669. Marshall, A. H. Oct. 20. Moulds; cores.-Sanitary traps are cast in metal moulds provided with a sand and metal core. Metal cores c, h support a sand core p by pins r. Further support is afforded by the member k, which supports the nut o to be cast into the trap. Metal penetrating between the sand and metal portions of the core is received by recesses f, and cutters g on the metal parts enable any fin produced to be removed. The gate s communicates with a riser u by a narrow channels t. Narrow gates t<1>, t<2> connect with the mould space.
GB191323669D1913-10-201913-10-20Improvements in and relating to Sanitary Traps.
ExpiredGB191323669A
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