Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1977-12-21
1979-07-03
Spar, Robert J.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 58, 226 11, 226110, B65H 2504
Patent
active
041598075
ABSTRACT:
Apparatus for feeding seriatim discrete webs of paper, cardboard or synthetic plastic material to one or more processing machines has a pair of continuously driven transporting rolls, a first and a second pair of intermittently driven advancing rolls, and first and second guides which respectively compel webs to travel from the nip of the corresponding advancing rolls into the nip of the transporting rolls. Two photocells are adjacent to each guide and each photocell is shiftable in and counter to the direction of travel of a web from the respective advancing rolls toward the transporting rolls. That photocell of each pair which is nearer to the respective advancing rolls causes the generation of a visible or audible signal in response to detection of the leader of a fresh web, and the other photocell of each pair transmits a signal in response to detection of the trailing end of a running web. While a web is fed by the first advancing rolls, the leader of a fresh web is threaded between the second advancing rolls and into the range of the nearest photocell to cause the generation of a visible or audible signal. The signal which is generated in response to detection of the trailing end of the running web is used to start the second advancing rolls. The procedure is analogous in connection with threading of a fresh web between the first advancing rolls and into the range of the nearest photocell, and also in connection with the generation of a signal on detection of the trailing end of the web which is fed by the second advancing rolls.
REFERENCES:
patent: 3128026 (1964-04-01), Bonnell et al.
patent: 3325071 (1967-06-01), Schmitz
patent: 3850356 (1974-11-01), Abe et al.
Honsel Karl-Heinz
Muhlenweg Karl
Niehaus Hans-Rudolf
Karl-Heinz Honsel
Kontler Peter K.
Skaggs H. Grant
Spar Robert J.
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