Measuring and testing – With fluid pressure – Dimension – shape – or size
Patent
1975-10-10
1977-03-22
Queisser, Richard C.
Measuring and testing
With fluid pressure
Dimension, shape, or size
33121, G01B 1320, G01B 1304
Patent
active
040129438
ABSTRACT:
A method and apparatus for measuring areas of workpieces, especially skins such as sheepskins in which the wool extends beyond the edges of the pelt, is provided. Air under pressure is supplied to a row of jet members and the skin to be measured is passed below the jet members. The pressure within the members is sensed, increase in this pressure indicating that the jet member is blocked off by the skin. By repeatedly counting how many of the jet members are blocked off, as the skin is passed underneath, a measure of the area of the skin is obtained. Since the wool does not interfere with the air issuing from the jet members, the measurement obtained represents the area of the pelt. In one alternative embodiment, a matrix of jet members is provided so that the area of the skin can be measured while it and the jet members are stationary relative to each other; in a further alternative embodiment, a single jet member is provided and this is caused to scan back and forth along a line transverse to which the skin is moved so that this jet member scans the whole area of the skin thus to enable a measure thereof to be obtained by detecting the time for which the single jet member is blocked by the skin.
REFERENCES:
patent: 1158310 (1915-10-01), Schulze
patent: 2387379 (1945-10-01), Woodbury
patent: 3026714 (1962-03-01), Evans et al.
patent: 3264739 (1966-08-01), Berlinsky et al.
patent: 3451258 (1969-06-01), Westbrook
patent: 3663108 (1972-05-01), Yamamuro et al.
patent: 3717414 (1973-02-01), Hall et al.
patent: 3762211 (1973-10-01), Poulsen
Goffe Frederick William Frank
Pilkington Donald James
Appleman John S.
Queisser Richard C.
The Shoe & Allied Trades Research Association
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