Advancing material of indeterminate length – Threading device
Patent
1978-12-11
1981-03-31
Gilreath, Stanley N.
Advancing material of indeterminate length
Threading device
226 97, 251 65, B65H 5116
Patent
active
042588723
ABSTRACT:
The present invention relates to a controllable thread extractor with an air passage connected to a vacuum source which includes a shaft passageway perpendicular to the air passage dividing the air passage into two sections, a ball is received in the shaft and means for actuating the ball to selectively open and close the air passage.
REFERENCES:
patent: 2576168 (1951-11-01), Allen
patent: 3212539 (1965-10-01), Felix
patent: 3212751 (1965-10-01), Hassa
patent: 3688957 (1972-09-01), Beddoe
patent: 4018419 (1977-04-01), Monpetit
patent: 4083171 (1978-04-01), Konig et al.
Husges Gerd
Mayer Walter
Gilreath Stanley N.
Schubert & Salzer
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