Geometrical instruments – Area integrators – Electrical
Patent
1984-09-24
1986-02-18
Haroian, Harry N.
Geometrical instruments
Area integrators
Electrical
33141R, 33134R, G01B 504
Patent
active
045703485
ABSTRACT:
Apparatus for measuring length of an elongate cable. A frame having a hole therethrough includes a pair of rollers mounted for rotation thereon. The circumferences of the rollers are rollingly engaged with one another over the hole and a cable which is to be measured is held between the rollers and passed downwardly through the hole thereby rotating the rollers. A magnet is mounted on one of the rollers adjacent the circumference thereof. Mounted on the frame adjacent the circumference of the roller having the magnet mounted thereon is a magnetically-activated switch which closes each time the magnet passes thereby. The switch provides an input to a transmitter which generates a signal including pulses indicative of the number of rotations of the wheel having the magnet mounted thereon. The signal is received by a receiver and the pulses are counted and displayed in order to provide a visual indication of the number of pulses, such being directly proportional to the length of cable which passes between the rollers.
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Amsler Jerry D.
Furrow Robert E.
Haroian Harry N.
McCollom Alan T.
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