Boots – shoes – and leggings
Patent
1984-09-07
1987-09-29
Krass, Errol A.
Boots, shoes, and leggings
33147N, 33148H, 271 9, 271263, 271268, 294907, 901 32, 901 46, 364551, B25J 1502, G01B 502, B65H 510, B65H 332, B65H 706
Patent
active
046972463
ABSTRACT:
Method and apparatus for detecting article engagement errors and for calibrating engagement error detection apparatus associated with a plurality of gripper arms (16) of an insertion machine (10). Gripper arms (16) at each of a plurality of insert stations S comprise a first jaw member (24) and a second jaw member (26) which selectively engage articles therebetween. Field-generating means (420) is mounted on one jaw member while a Hall Effect sensor (400) is connected on the other jaw member. The sensed flux density of the generated field is a function of the relative displacement of the first and second jaw members (24,26). A signal generated by the sensor (400) operated in a slide-by mode is related to the separation of the first jaw member (24) and second jaw member (26). If the sensor-generated signal is within predetermined limits of a stored reference signal a proper number of articles are engaged between the first and second jaw members (24,26). The reference signal is stored for each insert station S in accordance with a method and apparatus for calibrating an engagement error detector (364) associated with the station S. The engagement error detectors for a plurality of insert stations can be calibrated one-at-a-time in serial fashion or, in an alternate mode, essentially simultaneously using a master calibration switch (MCS).
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Hall Effect Transducers, pp. 34-35, 38-39 (1982).
Guenther Kenneth L.
Rabindran K. George
VanderSyde Gary L.
Zemke, deceased Edward H.
Bell & Howell Company
Juffernbruch Daniel W.
Krass Errol A.
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