Pemco, Inc.

Anthony J Lutzke

Otis E Meives

Gary L Lynch

Guy P Entringer

Michael J Vorachek

Successive stacks of wrapped reams of paper sheets are delivered onto first cardboard blanks on top of a first platform which is then maintained in raised position. The platform thereupon descends and the front and rear sidewalls of the blank are simultaneously pivoted against the respective sides of the descending stack before the latter leaves the first platform and continuously advances along a first horizontal path wherein the conversion of the first blank continues so that such blank ultimately constitutes a case surrounding the bottom and the sides of the respective stack. The stack is then lifted by a second platform and a second blank is placed on top of the ascending stack or even ahead of the second platform. The rising platform moves the second blank past a first set of folding devices which fold its front and rear flaps, and the stack thereupon continuously advances along a second horizontal path to complete the conversion of the second blank into a lid which overlies the top of the stack and is glued to the adjacent parts of the case. The effective width and height of the apparatus and the effective width of the hoppers for the first and second blanks are adjustable.

Method and apparatus for confining wrapped reams of paper sheets in

Method of and apparatus for wrapping articles, in particular for wrapping reams of paper in a sheet of wrapping material such as paper or the like. The method comprises coupling the wrapping apparatus to the sheeter which produces the reams so as to automatically, continuously synchronize their operation, automatically adjusting the machine position of the wrapping apparatus relative to the position of the sheeter to ensure synchronization of the wrapping apparatus with the sheeter, monitoring the reams randomly received by the wrapping apparatus from the sheeter and delaying select reams so as to effect desired spacing therebetween, feeding delayed reams to the wrapping means of the wrapping apparatus at predetermined points during the cycle of the wrapping means, coupling the drive of the wrapping apparatus to the drives for the web positioning and wrapper sheet transfer means for precisely advancing the web and wrapper sheets to the cutting and draping positions, respectively, in a gradually accelerating, constant, gradually decelerating manner keyed to the wrapping means' cycle.

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Elkhart Lake, WI, United States of America

Anthony J Lutzke