Apparatus for positioning a web

Details Apparatus for positioning a web Apparatus for positioning a web

1974-12-18

1976-03-02

Knowles, Allen N.

Advancing material of indeterminate length

Means to engage longitudinally spaced modifications in material

Pins on flexible belt or chain

226179, G03B 130

Patent

active

039412881

ABSTRACT:
An apparatus is described for positioning a paper web with respect to the print mechanism of a high speed printer. The apparatus includes a rod supported by the main frame of the printer and a slide tube is coaxially positionable on the rod. A pair of tractors for driving the web across the print station are carried upon the slide tube. One of the tractors is fixed to one end of the slide tube and the second tractor is positionally adjustable upon the slide tube. A clamp is provided for securing the second tractor to the slide tube after the spacing between the tractors is adjusted in relation to the width of the paper web. The slide tube is positioned to locate the type margin on the web at the desired location and a second clamp secures the slide tube to the rod.

REFERENCES:
patent: 2140028 (1938-12-01), Nichols
patent: 2979829 (1961-04-01), Uhleen
patent: 3006520 (1961-10-01), House
patent: 3114491 (1963-12-01), Wright

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