Scraper flight conveyor for conveying preheated thermoplastic bu

Details Scraper flight conveyor for conveying preheated thermoplastic bu Scraper flight conveyor for conveying preheated thermoplastic bu

1976-04-14

1977-11-22

Camby, John J.

Heating

Work chamber having heating means

Having means by which work is progressed or moved mechanically

34 60, 432139, 432239, F27B 902

Patent

active

040594017

ABSTRACT:
A scraper flight conveyor for preheating thermoplastic bulk material and feeding it to a screw extruder comprises a succession of controllably heated slideways arranged in superposed series, a plurality of scraper flights in sliding contact with each slideway and spaced along a path of travel over the surface thereof, and a drive operable to move the scraper flights on each slideway along the path of travel. The scraper flights push discrete portions of the thermoplastic bulk material along the path of travel. The delivery rate of the material to the slideways is controlled.

REFERENCES:
patent: 241653 (1881-05-01), Harrison
patent: 979349 (1910-12-01), Spirlet
patent: 1115263 (1914-10-01), Wedge
patent: 1499850 (1924-07-01), Bonnard
patent: 1647050 (1927-10-01), Mackay
patent: 2888254 (1959-05-01), Hermann
patent: 3531872 (1970-10-01), Watson et al.

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