Length measuring apparatus

Details Length measuring apparatus Length measuring apparatus

1985-05-22

1987-10-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356387, G01N 2186

Patent

active

046985123

ABSTRACT:
This invention describes a length measuring device for measuring dimensions of (length and width) of labels which are for high speed application to bottles, cans and the like. A label to be checked is placed on a datum mounting plate, and a light source and photoelectric cell are arranged to sense the label edges as relative measurement in the direction of the label dimension to be measured and between the datum plate and light source takes place, thereby to obtain an indication of the label dimension.

REFERENCES:
patent: 3060791 (1982-10-01), Tarczy-Hornoch
patent: 4393313 (1983-07-01), Calkins et al.
patent: 9515479 (1985-07-01), Pryor

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