Advancing material of indeterminate length – With material-responsive control means – To position material laterally
Patent
1995-10-16
1997-01-21
Stodola, Daniel P.
Advancing material of indeterminate length
With material-responsive control means
To position material laterally
226 74, 226 95, 226111, B65H 2010, B65H 2022
Patent
active
055953344
ABSTRACT:
Apparatus for transporting a web of paper having tractor holes along only one margin thereof. The apparatus includes: a tractor drive having a first pair of pulleys and a first belt mounted on the first pair of pulleys, the first belt having a plurality of sprockets for engaging the paper tractor holes; and an auxiliary vacuum drive system for engaging the marginal portion of the web of paper without tractor holes, the auxiliary drive system having (a) a second pair of pulleys and a second belt mounted on the second pair of pulleys, the second belt having a plurality of apertures at equally spaced intervals extending longitudinally of the length of the second belt, the second belt having an upper and lower reach, (b) a device for applying a vacuum to the apertures in the upper reach of the second belt, (c) a device for varying the amount of vacuum applied and (d) a device for driving the upper reach of the second belt at about the same linear velocity as the linear velocity of the tractor drive sprockets, whereby the vacuum can be turned off during constant velocity or deceleration motions of the web, thereby dissipating tolerance build-up between the tractor drive and the auxiliary vacuum drive system.
REFERENCES:
patent: 3140030 (1964-07-01), Stewart
patent: 3317102 (1967-05-01), Lizotte
patent: 3499614 (1970-03-01), Badum
patent: 3681779 (1972-08-01), Darnell
patent: 3915291 (1975-10-01), Vogts
patent: 4462527 (1984-07-01), Taylor et al.
patent: 4485949 (1984-12-01), Gebhart et al.
patent: 4890140 (1989-12-01), Negoro et al.
patent: 5271541 (1993-12-01), Roux
patent: 5348278 (1994-09-01), Ring
patent: 5374042 (1994-12-01), Ring
IBM Technical Disclosure--Eichorn, "Feeding Apparatus for Continuous and Cut Forms"; Jan., 1964; vol. 6, No. 8, p. 91.
IBM Technical Disclosure--Kaufman and Krautwald, "Paper Feed Device"; Nov., 1972; vol. 15, No. 6, pp. 1990-1991.
Belec Eric A.
Janatka Eric J.
Malick Shahzad H.
Pritting Rebecca J.
Kaness Matthew A.
Pitney Bowes Inc.
Sklar Lawrence E.
Stodola Daniel P.
LandOfFree
Vacuum and tractor drive for paper web does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vacuum and tractor drive for paper web, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum and tractor drive for paper web will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2319819