Solid material comminution or disintegration – Processes – With application of fluid or lubricant material
Patent
1983-01-06
1985-04-16
Rosenbaum, Mark
Solid material comminution or disintegration
Processes
With application of fluid or lubricant material
241 3, 241 23, 241 65, B02C 2318
Patent
active
045110913
ABSTRACT:
A method and mechanical device for recycling thermoplastic scrap that collects the hot excess waste material that is trimmed off the edges of phonograph records immediately after they are pressed in a hydraulic record press. There is provided a tapered vertical shaft, widening at the bottom, which is secured to the base of a grinder. After a phonograph record is pressed flat, the hot excess thermoplastic scrap which extrudes from the edges is trimmed and allowed to drop into the upper opening of the shaft in the form of thirty inch strips. A motor or other means for blowing cold air is attached to an opening in the side of the shaft. The falling hot thermoplastic scrap is allowed to fall onto a horizontal platform surface located approximately twenty inches below the top of the shaft, where it is held and cooled by the blower for approximately twenty-six seconds, corresponding with the time it takes to press a record flat and trim the flash. The platform is then horizontally pushed out of the shaft by air pressure provided by front and rear conduits that are coupled to valves located on the hydraulic record press. The air pressure urges the platform in and out using the same energy supplied to the hydraulic record press. The cooled scrap falls into the grinder, where it is pulverized and mixed with similar vinyl plastic material and again used to form new phonograph records.
REFERENCES:
patent: 2588448 (1952-03-01), Worm, Jr. et al.
patent: 2792042 (1957-05-01), Dwyer et al.
patent: 3786844 (1974-01-01), Smearsoll et al.
patent: 3921917 (1975-11-01), Meinass
patent: 4222527 (1980-09-01), Davis
Mauer Robert
Rosenbaum Mark
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