Turn bar apparatus and method for web fed envelope machine

Details Turn bar apparatus and method for web fed envelope machine Turn bar apparatus and method for web fed envelope machine

1974-12-23

1976-05-04

Schacher, Richard A.

Advancing material of indeterminate length

Processes

By fluid current

226 97, 226197, 226199, B65H 2332

Patent

active

039542130

ABSTRACT:
Apparatus and method are disclosed for adjusting the entry angle of a continuous web into an envelope-making machine. The entry angle of the web is capable of adjustment even though web supply roll, printing means, splicer, and other equipment normally located before the feed end of an envelope making machine are stationary and not attached to the envelope-making machine. The apparatus for adjusting web angle includes a first turn bar unit; a plate attached to the body of the envelope-making machine near the feed end of the machine, which can swivel about a point, the means of attachment being the point about which the plate swivels; and a second turn bar unit attached to the swivel plate. As the web advances into the first turn bar unit it is flat. The first turn bar unit turns the web so that as it moves from the turn bar unit it is on its edge or in edgewise orientation. The web remains on its edge as it enters the second turn bar unit. After passing through the second turn bar unit the web is again in a flat orientation. With the web on its edge the swivel plate is capable of being moved so as to permit the entry of the web into the envelope-making machine at desired angles. The adjustment of web angle is achieved without movement of any equipment except the swivel plate and without damage to the web.

REFERENCES:
patent: 3542621 (1970-11-01), Calhoun
patent: 3657974 (1972-04-01), Hedrich

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