E.c.h. Will Gmbh

E. C. H. Will Gmbh & Co.

Jurgen Peter

Karl-Heinz Schlottke

Wolfram Wolf

Gerald Kroll

Horst Vogel

A continuous web of paper is subdivided into a series of discrete webs of finite length, and successive discrete webs of the series are provided with looped sections in zig-zag formation. Successive discrete webs of the series are moved forwardly and away from the next-following webs of the series while advancing toward a stacking station to thus establish between successive discrete webs gaps of predetermined width. The making of gaps involves advancing the discrete webs with the upper reaches of three parallel foraminous endless belt conveyors which attract the webs and move them toward the stacking station. The median belt conveyor is accelerated when it is approached by the trailing end of a discrete web and then advances the trailing end at a speed exceeding the speed of the other conveyors and of the leader of the next-following discrete web. The median belt conveyor is thereupon disengaged from the accelerated discrete web and is decelerated so that it reassumes a predetermined starting position relative to the other belt conveyors.

Apparatus for moving apart successive webs of a series of webs having

Apparatus for positioning covers on top of stacks of paper sheets has a transporting unit which advances a series of successive stacks along a first horizontal path and discrete covers along a second horizontal path above and adjacent the first path. The covers are accelerated by advancing along a downwardly sloping portion of the second path immediately ahead of two vertical rotary members which temporarily intercept an oncoming cover until the corresponding stack catches up with the intercepted cover. The lower portion of the stack then moves the rotary members apart to enable the stack and the cover thereon to advance along the first path beyond the rotary members. Each rotary member is mounted on a spring-biased or otherwise biased lever which is pivotable about a vertical axis.

Apparatus for positioning covers on stacks of superimposed sheets

A continuous running paper web is folded in zig-zag formation at a stacking station to form a pile of superimposed panels which are joined to each other by weakened fold lines. A stack containing a preselected number of superimposed panels at the bottom of the pile is moved laterally away from the stacking station so that the topmost panel of the stack or the lowermost panel of the remainder of the pile is unfolded, and the web is broken between such panels by tearing it along a weakened fold line or by severing it from one marginal portion to the other marginal portion along a weakened fold line or across one of the panels. The part or parts which move the stack from the stacking station can include or constitute the web breaking device. The remainder of the pile is supported from below during removal of the stack from the stacking station.

Method of and apparatus for gathering and manipulating stacked zig-zag

Apparatus for stacking panels of a running web in zig-zag formation by folding the web along transversely extending weakened fold lines has a vertically movable table which supports successive growing stacks at a stacking station and has a concave or convex upper side serving to impart to the panels above it a concavo-convex shape. The fold lines between the panels of the growing stack are pushed downwardly and thereby caused to assume an arcuate shape by a set of rotary folding fingers and by a conveyor which cooperates with a suction chamber and pulls the adjacent fold lines of the growing stack downwardly toward the upper side of the table. The concavo-convex panels of the growing stack are stiffer than plane panels and ensure that the growing stacks resemble parallelepipeds with neighboring sides disposed at right angles to each other and without sagging of panels between the corresponding fold lines.

Apparatus for forming stacks of panels in zig-zag formation

Apparatus for filling cartons having three upstanding side walls and a horizontal side wall with stacks of paper sheets has a horizontal conveyor reciprocable into and from a carton while the carton is held at a filling station, a system for delivering stacks to that portion of the conveyor which enters a carton at the filling station, and a locating device installed at a level above the path of movement of stacks with the conveyor portion and having an indexible horizontal shaft for two fingers which are disposed opposite each other, and an indexing mechanism for the shaft. The shaft is indexed to a first position in which one finger extends into the path of movement of an oncoming stack during delivery of the stack onto the conveyor, thereupon throuh 90.degree. to ensure that the fingers cannot interfere with introduction of the stack into the carton, and again through 90.degree. when the stack enters the carton to thus ensure that the stack is stripped off the conveyor by the other finger while the conveyor is being withdrawn from the station. That finger which strips a stack off the conveyor thereupon retains its position until engaged by the next stack so that the next stack is properly oriented prior to introduction into the next empty carton at the filling station.

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Hamburg, Germany

Jurgen Peter