Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Female mold type means
Patent
1974-04-05
1976-03-23
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Female mold type means
425115, 425363, B29D 2300
Patent
active
039457834
ABSTRACT:
An apparatus for continuously producing tapered shafts comprises peripherally co-operating rotating rolls. At least one of the rolls has a peripheral groove of varying depth so that as the rolls are rotated they define, at their co-operating regions, a die aperture of cyclically varying cross-section. Resin-impregnated fibres e.g. carbon fibres, are drawn through the die aperture to form a series of shafts each corresponding to one revolution of the rolls. A reciprocating mandrel may also be present if it is desired to produce hollow articles. According to one mode of operation, the rolls and, if present, the mandrel, are locked in position and the resin-impregnated fibres are pulled through the stationary die aperture to form an article the predetermined constant cross-section of which depends on the position at which the rolls and, if present, the mandrel have been locked. Heaters are provided to solidify the resin downstream of the die aperture. The possibility of making shapes other than tapered or uniform cross-sectional shapes is discussed.
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Flint, Jr. J. Howard
National Research Development Corporation
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