Patents Assigned to Vernon and Company (Pulp Products) Limited
  • Patent number: 4683028
    Abstract: In the continuous vacuum forming of articles from a fibrous slurry, e.g. from paper pulp, a plurality of two-piece hinged moulds are mounted on a transport apparatus 1 which transports the moulds stepwise in a loop. The internal surfaces of the moulds are defined by wire gauze of mesh 107,109 and the moulds are connected to a source of suction.The moulds, with the suction applied, are moved through the fibrous slurry contained in a tank 43, whereupon fibres are deposited on the mesh 107,109, much of the water being drawn off by the suction. The mould passes through a drying station, where warm air is sucked through the mould, further drying the article.The transport apparatus 1 is movable pivotably about an axis 6 by means of a fluid-operated ram 25. At the top of the path, the mould and the article therein are lowered onto a pin 61, a plurality of which are situated on an endless conveyor 59.
    Type: Grant
    Filed: February 6, 1985
    Date of Patent: July 28, 1987
    Assignee: Vernon and Company (Pulp Products) Limited
    Inventors: Martin Waller, Geoffrey Farrell, Kenneth W. Mills, deceased, by Margaret Mason, executor, by Geoffrey A. Shindler, executor