Plastic article or earthenware shaping or treating: apparatus – Press forming means – press reshaping means – or vulcanizing... – Cooperating endless belts
Patent
1979-08-09
1981-05-12
Drummond, Douglas J.
Plastic article or earthenware shaping or treating: apparatus
Press forming means, press reshaping means, or vulcanizing...
Cooperating endless belts
156580, 1565835, 100153, A01J 2100, B32B 300, B32B 502
Patent
active
042669243
ABSTRACT:
Transmission systems in which a driven sprocket is driven by way of a chain by a driving sprocket which is driven by drive means at a constant speed of rotation, oscillating or reciprocating idler sprockets for superimposing on the constant speed of rotation drive a periodic, cyclic motion changing the speed of rotation of the driven sprocket, which periodic cyclic motion increases the length of the portion of said chain extending between the exit side of said driven sprocket and the entrant side of said driving sprocket while shortening by a corresponding amount the length of the portion of said chain extending between the exit side of said driving member and the entrant side of said driven member during one-half cycle of said cyclic motion and vice versa during the other half cycle of said cyclic motion, and duel wire-mesh belt compaction modules for the wetout of glass fiber rovings and sheet molding compound paste between thermoplastic polymer films sandwiched between two wire-mesh belts horizontally moving in the same direction and respectively driven by two drum rolls positioned at one end of the compaction system, and the above transmission system for imparting a velocity-variable motion to the wire-mesh belt driven by one of said drum rolls, to produce a shearing type of action between said belts.
REFERENCES:
patent: 2326889 (1943-08-01), Schulz
patent: 3850213 (1974-11-01), Keaton
patent: 3993426 (1976-11-01), Ahrweiler
patent: 4178144 (1979-12-01), Tabler
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