Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1985-02-15
1986-08-26
Jillions, John M.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242205, 242 7551, 242 57, 352168, B65H 1810, G03B 104
Patent
active
046078045
ABSTRACT:
This invention relates to an improvement upon the film winding and rewinding apparatus forming the subject matter of my copending application Ser. No. 666,187 filed Oct. 29, 1984, by a replacement of its former manually-shifted electrochemical reversing system for changing from a so-called "A-wind" to a "B-wind" with an electromagnetic one employing a pair of electromagnetic clutches on parallel counterrotating output shafts operatively linked together with a belt and pulley power transfer mechanism which cooperates with the clutches to impose a drag upon the supply reel regardless of which direction it is being turned by the power supplied to the take-up reel. The invention also encompasses an electromechanical circuit in which an idler spool responsive to the tension in the film passing between the supply and take-up reels actuates a potentiometer which, in turn, lessens the drag on the supply reel as the tension increases. The invention further encompasses a control circuit in which two or more different combinations of resistances can be switched to vary the drag on the supply reel to adjust for different reel sizes.
REFERENCES:
patent: 2685950 (1954-08-01), Demby
patent: 2782677 (1957-02-01), Steigman
patent: 3235197 (1966-02-01), Johnson et al.
patent: 3494573 (1970-02-01), Gerlach
patent: 3528628 (1970-09-01), Wangerin
patent: 3677498 (1972-07-01), Johnson et al.
patent: 3779485 (1973-12-01), Wolf et al.
patent: 3806061 (1974-04-01), Kollar et al.
patent: 3809336 (1974-05-01), Kollar et al.
patent: 3858828 (1975-01-01), Bundschuh et al.
patent: 3977620 (1976-08-01), Devel
patent: 4347993 (1982-09-01), Leonard
patent: 4436251 (1984-03-01), Deyesso et al.
Goldberg Brothers, Inc.
Jillions John M.
Spangler, Jr. Edwin L.
LandOfFree
Film winding and rewinding apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Film winding and rewinding apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Film winding and rewinding apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2308200