End of roll detector

Details End of roll detector End of roll detector

1978-06-30

1979-11-20

McCarthy, Edward J.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

B65H 2504

Patent

active

041748174

ABSTRACT:
A generally rectangular cartridge is provided having a substantially skewed side wall together with exit orifice means and an associated light seal positioned between a terminal portion of the skewed side wall and the adjacent wall of said cartridge. An end of roll detector is also provided, employing a movable roller which activates a microswitch when the supply of film in the cartridge becomes exhausted.

REFERENCES:
patent: 1078861 (1913-11-01), Koch
patent: 2825513 (1958-03-01), Yerrid
patent: 2910555 (1959-10-01), Tunstall
patent: 3458157 (1969-07-01), Wells
patent: 3606199 (1971-09-01), Fujimoto

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