Paper-folding apparatus
AssigneeBell & Howell Company
InventorsRobert G. Hickman, Keith Riches
Life of this patent
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Abstract
Apparatus for forming a longitudinal fold in a web of paper includes a paper feed arrangement, paper folding means arranged below and downstream of the paper feed arrangement, and guide means extending between the paper feed arrangement and the paper folding means. The paper feed arrangement includes a support on which are mounted a pair of tractor drives engageable with the edges of the web. The support is movable in a transverse direction to alter the position of the web relative to the paper folding means.
Claims22
Apparatus for forming a longitudinally-extending fold in a web of paper, the apparatus comprising:
- a paper feed arrangement for driving the web through said apparatus, the said paper feed arrangement including a support extending transversely of the web and mounting a pair of drive members engageable with opposite longitudinal edges of the web;
- and
- paper folding means disposed below, and downstream of, said paper feed arrangement, the paper folding means including a pair of fold-plates defining a narrow gap through which the web passes to form a fold and a pair of output rollers resiliently biased into engagement with one another, between which the web passes on leaving said fold-plates, the gap defined by the fold-plates and by the output rollers extending at right angles to the support;
- said support carrying said drive members being movable in a transverse direction to alter the position of the web relative to the fold-plate and, hence, to alter the transverse position of the fold formed in the web.
Apparatus for forming a longitudinally-extending fold in a web of paper, the apparatus comprising:
- a paper feed arrangement for driving the web through said apparatus;
- paper folding means disposed below, and downstream of, said paper feed arrangement, the paper folding means including a pair of fold-plates defining a narrow gap through which the web passes to form a fold and a pair of output rollers resiliently biased into engagement with one another, between which the web passes on leaving said fold-plates;
- and
- guide means extending between said paper feed arrangement and said paper folding means for guiding the web into the fold-plates, said guide means including a member defining a V-shape having edges extending from position spaced apart by a distance greater than the width of the web and immediately below the paper feed arrangement, to a vertex substantially immediately above the fold-plates and disposed centrally thereof.
Apparatus for forming a longitudinally-extending fold in a web of paper, the apparatus comprising:
- a paper feed arrangement for driving the web through said apparatus, the said paper feed arrangement including a support extending transversely of the web and mounting a pair of tractor drives having rotary members which, in use, engage the margins of the web and which are rotatable to drive the web in a downstream direction;
- paper folding means disposed below, and downstream of, said paper feed arrangement, the paper folding means including a pair of fold-plates defining a narrow gap through which the web passes to form a fold and a pair of output rollers resiliently biased into engagement with one another, between which the web passes on leaving said fold plates, the gap defined by the fold-plates and by the output rollers extending at right angles to the support;
- and
- first and second motors, coupled to said tractor drives and to said output rollers respectively, and control means coupled to said first and second motors and operable to actuate said motors to drive the tractor drives and output rollers simultaneously.
Dependencies are inferred from the claim text.