Boots – shoes – and leggings
Patent
1977-07-26
1979-02-27
Gruber, Felix D.
Boots, shoes, and leggings
228 57, 228104, 364507, G01B 734, B21C 5100
Patent
active
041422376
ABSTRACT:
A continuous production line is divided into a plurality of zones, with each of which there is associated a presettable counter. An anticipated length of a material, which has been calculated from information regarding the material before welding, is converted into a given number of pulse signals, which in turn are preset in the counter, with its timing being shifted a zone to zone distance. Long materials which have been sequentially joined by welding into a continuous length of material are fed into the production line, and the length of material actually fed is detected by means of a feed length gage, and an output of the gage is converted into a pulse signal. The length of the material actually fed is substracted from the anticipated length of the material, i.e., the preset count value, as the material is being fed. Thus, it is presumed that a welded joint across the length of material is present in the zone where a preset count value becomes zero as a result of the aforesaid subtraction. This presumption is further corrected by means of a welded joint detecting means provided in a given position in the production line. The welded joint detecting means is provided in the form of an X-ray thickness gage or temperature detector for non-contacting detection, without subjecting the material to physical or chemical working.
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Gruber Felix D.
Sumitomo Kinzoku Kogyo Kabushiki Kaisha
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