Conveyors: power-driven – With alarm or indicator – Means for measuring dimensions of load on a conveyor
Patent
1977-02-23
1978-05-09
Love, John J.
Conveyors: power-driven
With alarm or indicator
Means for measuring dimensions of load on a conveyor
198856, 226 45, 200 6113, 200 6145R, 335 54, 335207, 340271, B65G 4300, H01H 3502, H01H 900, G08B 2100
Patent
active
040882225
ABSTRACT:
An endless-conveyor monitoring switch assembly includes an elongated frame having a shaft journaled for rotation therein and extending longitudinally therealong. A drive wheel is attached to and rotatable with the shaft at a first end of the elongated frame and a detecting switch is attached to the shaft at the opposite end of the elongated frame. A seesaw, U-shaped, mounting member is attached to the elongated frame at a point intermediate the drive wheel and the detecting switch for mounting the elongated frame on an endless-conveyor cable support. The mounting member allows the weight of the elongated frame and its attachments to pivot the frame in a seesaw manner to bring the drive wheel into contact with the endless conveyor. The detecting switch includes a conductive disc mounted on the shaft adjacent to a pendulum having permanent magnets and mercury switches mounted thereon. When the shaft rotates the disc above a predetermined speed, the permanent magnets on the pendulum cooperate with eddy currents in the disc to pivot the pendulum and thereby actuate the mercury switches.
REFERENCES:
patent: 433549 (1890-08-01), Soule
patent: 1973312 (1934-09-01), Hardinge
patent: 2510163 (1950-06-01), Wood
patent: 2589220 (1952-03-01), Buckeridge
patent: 2647966 (1953-08-01), Tornberg
patent: 2928914 (1960-03-01), Gruber
patent: 2951576 (1960-09-01), Buckeridge
patent: 3139217 (1964-06-01), Mell
patent: 3301974 (1967-01-01), Hancock
Love John J.
Valenza Joseph E.
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