US1546808A - Paper-cutting machine - Google Patents

Description

, July 21, 1925 I Filed Feb. 2'7, 1923 2 Sheets-Sheet 1 July 21, 1925. 1,546,808

L. A. .STRAUBEL.

PAPER CUTTING MACHINE Filed Feb. 27, 1923 2 Sheets-Sheet 2' lyx 0M Patented. July "21 1925.

UNITED STATES:

PATENT oluuce.

LOUIS A. STRAUBEL, OF GREEN BAY, wxscousm.

rune-enume MACHINE.

' Application filed February 27, 1923. Serial m3. 821,561.

To all whom I Be it lmowd that I, LOUIS A. Srmnnnn,

a citizen of the United States, and resident of Green Bay, in the county of Brown and State of Wisconsinyhave invented certain new and useful Improvements in'Paper:

Cutting Machines; and I do hereby declare that the following is a full, clear, and exact'description thereof. v

This invention relates to paper cutting machines and is particularlydirected to a machine for cutting bundles of interfolded sheets into lengths suitable for commercial packages. 5 r I In general, this lnventlon 1s an 1111pI0V0-' ment over that disclosed in Patent No.

1,452,227 issued to me April 17, 1923, for

paper cutting machine, :and has the same general ob ects as those disclosed in such application.

At the present time, it is 'common practice to put up in packages, interfolded sheets of toilet paper, paper toweling, and the like, in which the ends of each sheet are interfolded with the ends'of the adjacent sheets. This interfolding operation is performed on exceedingly wide sheet's, .resulting in a long bundle.whichhas to be cut intoproper commercial length or packages. Tlns particular interfolding arrangement of the.

sheets: of paper results in a bundle. having lesser density at the folded edges than in the center, due to the fact that the end of the paper disposed between the adjacent,

fold does not reach to the crease of the fold, "leaving only two thicknesses .of paper on the folded edge, with three thicknesses "the center. In using the ordinary paper cutter it is necessary'to press the sheets solidly together to obtain a clean cut, and this being imabove described, the edges are left roughpossible with the interfolded arrangement and uneven. I j i 1 A further difiicultyencountered in-cutting elongated interfolded paper stock in the shorter lengths is due to the fact that it is impossible forthe knives to' cut a kerf in the paper, as no portion of the paper is cut away in the form of shavings or dust. In cutting paper the portions of the pa-- per are merely severed without removing any portion thereof, and it is therefore apparent that considerable pressure must be exerted upon the rotary cutters to force them between adjacent/portions of the stock while they are making their cutting stroke, Obv'1ously,.a rotary cutter is of relatively large diameter, and'i'norder to provide the requisite stiffness would necessarily have to .be falrly thick. This thick cutter would tear the paper as was forced through and leave a rough, frayed edge. On the other hand, a relatively thin cutter will spring and move from side to side, thereby making an irregular and unsatisfactorycut, if not, in:

fact. wrecking the cutter; v

This invention is designed, to overcome the above noted defects, and objects of-this 1nvention.are, therefore, to provide a ma-' chmefor cutting elongat'edinterfolded pa per stock into shorter. lengths in which a smooth, even cut isobtained'; in which relatlvely thin 'cuttersmay be employed; in 'whlch guiding means for the cutters are provided, whereby they may be forced between adjacent portions of the stock without danger'of buckling or swaying of the cutters, and without producingany frayed or irregular edge in the severed paper.

Further objects are to provide a machine whichv will make a clean cut through the paper, irrespectivebf variations in the extentj of compression of the different portipnsiofthe'folded paper stock, and to provlde a machine.- in, which the folded paper stock may be readily handled in an eflective and rapid manner.-

;tween which the carrier for the paper stock and the rotary cutters are mounted. The

carrier comprises endi spider members 3,

which are rigidly secured to a shaft 4 journaled in the side standards and are pro vided with aplurality of regularly spaced outwardly pro ectin i rectangular portions 5.

Channel irons 6 iitoover and are secured An embodiment of the invention is shown 1n the accompanying'drawings, in which Flgure 1, is an elevation ofthe machine.

to these rectangular projecting portions 5. T?

as may be seen from Figure 2, and ex- -tend from one spider to the other, thereby forming a real light structure. A plurality of alignedstock receiving pockets are secured to each of the channel members 6', and such pockets each comprise an inner and an outer jaw, indicated at 7 and 8, re-" spectively, which are reinforced by suitable flanges 9. These inner pockets are rigidly secured to the channel members 6 and may.

be conveniently provided with a forward inwardly directed lip 10, which overhangs the forward edge or leading edge of the channel member 6 to thereb aid in positioning and maintaining the position of the pockets with I reference to the channel members 6.

These pockets atre ranged in rows, as may i be seen in Figure 1, one row being carried by each of the channel members 6. Tliey are so positioned that the adjacent edges 11 and 12 of their jaws are parallel and are 'closely spaced, permitting the rotary cutters 13 to slide therebctween and to be guided thereby, while such cutters are in active cutting operation.

It is to be noted particularly from reference to Figure '2, that the cutters 13 are guided both above and below the interfolded paper stock 14, and are therefore prevented from swaying or buckling. The cutters, therefore, may be made as thin as desired without danger of effecting an irregular or ragged cut through the paper stock. If desired, the adjacent edges 11 and 12 of sue cessive pockets may be hardened in any suitable manner. Y

The cutters 13,. as stated, are relatively thin, circular discs, and are regularly mounted upon a driving shaft 15 in spaced relation, corresponding to the spacing between the successive stock-carrying pockets.

The shaft 15 is journaled in the upper portion of the side brackets 1 and 2 and is positively. connected with the shaft 4 through suitable gearing indicated generally at 16-.

Any suitable means may be provided for driving the machines,for instance, a belt receiving pulley 17 may be connected with the shaft 15 by suitable gearing indicated generally at 18.

In the form shown in Figure 2, the cutters 13 travel in a clockwise direction, while the carrier travels in a counterclockwise direction. This insures a sheer cut edgewise 8, and .the direction of rotation of the knives or. cut-ters -13 is c611'nter-clockwise, .'in this N case, so as to insure a clear, even cut edgewise of. thepaper--such reverse direction of rotation of the cutter being secured by slightly altering the gearing, indicated generally at 16 in Figure 1, in a well-lmown manner.

It will be seen, thereforethat a paper cutting machine has been provided in which extremely thin rotary cutters may be employed; in which an e en, smooth out is secured; and in which the cutters are guided by the stock" carrying pockets.

It will further be seen that a very simple construction has been attained in which it is not necessary to employ strippers for the cutters or additional guides for such cut-- 't'ers, but in which the essential guiding action is secured by means of the cooperation of the pockets themselves with the thin rotary cutters.

It is further to benoted that in the usual 1 paper cutting machine where interfolded,

- elongated paper stock is employed, that the wrapper, or label, which surrounds the interfolded paper, becomes slack on thesides, or bulges out on such sides. Obviously, this condition aggravates the tendency to tear the paper'andin the usual type of machines, the wrapper'is .very readily torn and frayed. However, -in practicing this invention the wrapper, although it may have become slack, is cut with a clean, straight edge, without any fraying and, therefore, presents a sIagllitly and attractive appearance.

0 arm:

' 1. A paper cutting machine comprising" a movable carrier for the paper, and a plurality of circular knives. said carrier having a plurality of, slots through which said knives pass and the portions of the carrier adjacent said slots forming guides for said knives.

2; A paper cutting machine comprising a rotary carrier having a plurality of pockets having radially spaced inner and'outer portions adapted to'receive the paper, said portions having closelyjspaced juxtaposed portions, and a plurality of thin rotary knives positioned :between said juxtaposed faces and contacting therewith, 1 whereby said knives are guided by said carrier.

3. A machine for cutting elongated folded paper stock comprising a rotary carrier having a plurality of aligning pockets for' Give lengthwfi'stmk and a spade it substantially through its "entire length, thesuccessive pockets of each row having closely spaced parallel edges, a pluralityqof thin rotary cutters adapted to. enter the spaces beween'the pockets and to be guided by the.

said paralleledges, and means for rotating said knives and c'arrierl' I 5'.1A machine ,for cutting elongated fold-- Ied paper stock into "shorter, lengths," com-..

- prising a carrier having aaplurality of alignedpockets adapted to receive said elon-- gated stock, successive pockets being closely spaced and having parallelnhardened faces,

- cessive pockets, and means 1 ing pockets adapted to supp'ort .saidelon'-- a plurality of thin revolubly 'mounted cutters adapted to enter the space between suefor rotating said carrier andbutters. n

6. A machine for cutting); elongated folded paper stockinto shorter lengths, comprising a carrierhavingplurality of rows o-f aligngated 'stockthroughout substantially its entire extent, successive pockets having closely spaced parallel edges, means-for advancing said carrier, and a'plurality of relatively thin rotary cutter knives adapted to enter f the space between successive ocketsand to beguided by said-parallel e ges.

p paper cutting machine comprising .-a carrier having a plurality of alignin pockets adapted to vreceive elongated stoc andto support such stock throughout sub stanti ally its entire length, said pockets havjacent pockets to be guided by the outer and 'innerportions of said pockets, whereby said cutters are supported against lateral deflection'above and'below the paper stock-during the cutting operation, and whereby cuttersj. which are inherently-too fragile to operemployed:

1 In testimony that I claim theioregoing in the; county of'Brown and. Stateof Wisconsin. 1 v' v a LOUIS. A. STRAUBEL ate independently of the pockets, may be Q I have hereunto setmyfhand' at Green Bay,

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