Mould manufacturing device
OwnerClaude Petro, Andre Gliseinventors
Life of this patent
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Abstract
In the manufacture of a mould by the so-called lost wax method, the position and space occupied by a set of blank-carrying elongate members of fusible or calcinable material supported on an ogival head or cone are controlled by a gauge including a ring slidably mounted along a vertical rod. The gauge is then replaced by a cylinder forming a receptacle which receives a hardenable refractory material embedding said set. After hardening, the cone is removed and the fusible or calcinable material removed by heating to provide mould cavities.
Claims3
A mold manufacturing device comprising a support, an ogival head extending vertically above said support to support in turn a set of rods carrying blanks of pieces to be molded in calcinable or fusible material, a lower ring detachably secured to said support in surrounding relationship, a vertical rod carried by and upstanding from said lower ring, an upper ring mounted for vertical sliding movement on said rod coaxially with said lower ring, said upper ring being horizontally disposed, there being at least one graduation on said rod indicating the position of the upper ring along said rod relative to the location of the thermal center of a mold to be cast on said support about said head after said rod and rings are removed from said support, and means for releasably securing said upper ring in predetermined positions along said rod.
Dependencies are inferred from the claim text.