Tractor for engaging and advancing a web of paper

Details Tractor for engaging and advancing a web of paper Tractor for engaging and advancing a web of paper

1980-04-21

1982-02-23

McCarthy, Edward J.

Advancing material of indeterminate length

Means to engage longitudinally spaced modifications in material

Pins on flexible belt or chain

226 87, G03B 130, G03B 134

Patent

active

043165672

ABSTRACT:
A tractor 10 is disclosed for engaging and advancing a web of paper 20 by engaging a series of holes 21 along an edge of the paper 20. The tractor 10 includes a pair of parallel side plates 12, 14 and an elongated guide member 32 defining a continuous guide track 34. The guide member 32 is positioned between the side plates 12, 14 so as to define a continuous guide channel 36 in cooperation with the guide plates 12, 14. The tractor 10 also includes a drive belt assembly 22 comprising a continuous belt 62 carrying a plurality of spaced drive members 38 adapted to engage the holes 21 along the edge of the paper 20. A drive sprocket 33 located at one end of the guide channel 36 engages the drive members 38. Each guide member 38 has a hemicylindrically shaped base 64 with a notch 66 therein, thereby defining two parallel edges 67 which ride along the guide track 34. Additionally, each drive member 38 includes a drive pin 80, the profile of the surface of the drive pin 80 has the shape of a segment of an involute.

REFERENCES:
patent: 3347433 (1967-10-01), Bernard
patent: 3392893 (1968-07-01), Bennett
patent: 3507431 (1970-04-01), Hepp
patent: 3606122 (1971-09-01), Brewster
patent: 3825162 (1974-07-01), Hubbard
patent: 4194660 (1980-03-01), Seitz
patent: 4199091 (1980-04-01), Hubbard
patent: 4206859 (1980-06-01), Plaza

Affiliated with

Also associated with

Rating

Tractor for engaging and advancing a web of paper does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tractor for engaging and advancing a web of paper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tractor for engaging and advancing a web of paper will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1771630