Means and method for providing indicating of end portion of web

Details Means and method for providing indicating of end portion of web Means and method for providing indicating of end portion of web

1977-06-02

1978-09-05

Mautz, George F.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

116 67A, 242 55, 242 74, 242191, 400249, B65H 2514, B65H 2532

Patent

active

041113780

ABSTRACT:
Method and apparatus for providing an indication of when the web material remaining on the supply spool has been depleted to a predetermined amount, such as the end portion. An end portion of the web material is coupled to the supply spool hub and a predetermined amount of the web material is wound onto the spool in a first direction. The web material is then folded back onto itself and the remaining amount of web material to be placed on the supply spool is wound onto the spool in a second and opposite direction. As the web material is removed from the supply spool, the supply spool hub and/or the shaft for the supply spool will reverse direction of rotation upon reaching the portion of the web material, which has been folded back onto itself. Also, the angle and point of departure of the web material from the supply spool hub will change. The change in rotational direction and/or the change in the angle or point of departure of the web material from the spool are sensed to indicate the web material on the spool has been depleted to the end portion.

REFERENCES:
patent: 3572606 (1971-03-01), Yamamoto
patent: 3660810 (1972-05-01), Yoshii
patent: 3690591 (1972-09-01), Opelt
patent: 3902585 (1975-09-01), Mogtader

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