System for controlling the grinding of roast coffee

Details System for controlling the grinding of roast coffee System for controlling the grinding of roast coffee

1991-04-08

1994-09-27

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

With automatic control

241100, B02C 2300

Patent

active

053501233

ABSTRACT:
A conveyor system for a coffee grinder for taking ground coffee from the grinder to the packing machinery, and a laser test-meter used to analyze the granulometry of ground coffee test samples and compare them with a granulometric reference sample that are known. The system of the invention includes improvements which include a first device which continually receives undisturbed ground coffee samples and delivers these samples to a second device in which a gas stream blows a stream of coffee grains down a tube to the test-meter and a second stream of gas flowing at right-angles to the tube disperses any partially aggregated particles before they reach the test-meter. A third device creates a pressurized safety area around each lens of the laser test-meter. The area is partly closed so that laser beams can freely pass, and gas under pressure enters the area preventing coffee grains from entering the area and disturbing the lens. A fourth device sucks the grains from the test area and delivers them into an eddy-chamber from which they are periodically transferred to the system for conveying ground coffee to the packing machinery.

REFERENCES:
patent: 1220147 (1917-03-01), Wear et al.
patent: 2699899 (1955-01-01), Dale
patent: 4110485 (1978-08-01), Grubbs et al.
patent: 4659023 (1987-04-01), Frei et al.
patent: 4789106 (1988-12-01), Weber

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