US1849958A - Tabloid sheet slitter - Google Patents

Description

March 15, 1932. o. c. ROE-SEN TABLOID SHEET SLITTER Original Filed Sept. 19, 1927 2 Sheets-Sheet March 15, 1932. o. c. ROESEN TABLOID SHEET SLITTER Original Filed Sept. 19, 1927 2 Sheets-Sheet 2 final-Wei filer 4/60" fia/fa/Eaamw. n:

Patented Mar. 15, 1932 UNITED STATES recess PATENT oFFics OSCAR CHARLESROESEN, F BROOKLYN, NEW YORK, ASSIGNOR T0 WOOD N'EWSIAPER MACHINERY CORPORATION, OF NEW YORK, N, Y., A CORPORATION OF VIRGINIA TABLOID SHEET SLITTER Application filed September 19, 1927, Serial No. 220,431. Renewed August 21, 1931.

This invention relates to a slitting device for arunning web and the particu1arohject of the invention is to provide means for slitting the edge which hitherto has been folded at a point past the former fold, instead of slitting it on the drag roller before it reaches the former; also to provide means whereby the webs which are severed from one another will not have to run over curved paths and will not have a chance to wander or buckle. Thefinvention also involves improvements in the cutter itself and in its relation to other parts of the folder. Dther objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which F'g. 1 is an end view of apair of folders and formers constituting the folding unit showing a: preferred form of this invention applied thereto; 1

Figs. 2 and 3; 4 and 5; 6 and 7; and 8 and 9 are respectively edge and Side views of several other forms .offlcutters adapted to be used in accordance with this invention.

hen running a tabloid sheet over two formers, it has been the custom to slit it over the center of each former as well as between the formers, so as to deliver the tabloid cut open at the headand foot. This presented a number of serious difficulties when it was attempted to transfer the web from one former to the nipping rolls of the other former, as has been done. The path which the paper must necessarily take in such a case is not a straight line, and it has been found in practice that webs previously severed from one another will not run over curved paths without buckling or wandering.

For the purpose of obviating these difliculties, I have provided for cutting the web in a new place in a new way. In Fig. 1 is shown the usual folder 1.0 and former 11 with the nipping rolls 12 in the usual place. The folded edge of the sheet is led over a bracket 13 of thin cross section which is fastened to the side frame of the folder at its foot and which holds the. fold of theweb in proper position for slitting. This bracket is provided or associated at its outer end with some form of slitting mechanism. In the forms shown in Figs. 1, 2 and 3, the bracket is provided witha' slot 1e in its edge. The shape of the bracket therefore is of such a nature that one half of the/sheet passes readily on each sideof the bracket as is indicated in Fig. 2 for example. The slitting mechanism comprises a rotary shaft 15 located on the outside of thefolded edge and is driven by gearing'lfi, for eX-amplafrom the source of power connected to one of the several driving shafts of the press. V

I F' gs. 1, 2 and 3 the shaft 15 is properly supported in bearings and is located at a slight inclination to bring it perpendicular to the plane'of the-web. This shaft is pro vidcd with a grooved roll 18 whichis rotated positively by the shaft 15 on which it is fixed.

A freely rotatable slitter 17 is located in the plane of the folded web in the notchl. This slitter projects into the. groove in the roll andas the paper passes along the bracket it slits it at its edge. These parts are located between the nipping rolls 12 and the folding couple where the path of the paper is straight underall circumstances, and where the slit can be made in an accurate and smooth manner. The slitter can be located at any convenient point between the folding couple and the last pair of nipping or guide rolls delivering to it. y

In Figs. l and 5 the conditions are substantiallythe same except that the shaft 15 is provided with a hardened roller 18* which bears against the type of slitter 17 which works best with a roller of this nature. The slitter as in Fig. :2, is freely journalled in the inner end of the bracket which is slotted out at 149 to receive it.

In Fig. .6, the slitter 17 is mounted on the shaft itself and enters concave groove or surface 19 in the bracket 13 which is tapered. In Figs. Sand 9, the same slitter is used, "but in'this case the slitter projects into a grooved roller 20 journalled freely on the bracket itself. 1

By placing the slitter of any of these types in the position indicated Fig. 1, there is no chance for the webs which are slit apart from each other to wander independently or to buckle. They are held together integrally until just ready to go into the folding couple. Therefore, the difficulties above mentioned are eliminated.

Although I'have illustrated and described only a few forms of the invention I am aware of the fact that other modifications can-be made therein by any person skilled inthe art without departing from the scope of the invention as expressed in the' claims. Therefore, I do not wish to be limited in these respects, but what I do claim is 1. The combination with a folding machine having a folding couple, of means for guiding a web to said folding couple, sald web being folded along its running edge, of a slitter located adjacent to the folding couple and in position to cut the web along the folded ed e.

The combination fwith a folding machine comprising a folding couple and a pair of rollers engaging the doubled over web and directing it into the folding couple, of a rotary slitter located in position to slit the web along the folded edge between thesaid rolls and the folding couple.

3. In a foldingmachine, the combination with means for feeding a longitudinally folded web, ofa shaft arranged transverse to the direction of the web, and a slitter on said shaft located in position to slit the web along the longitudinal folded line.

' 4:.In a machine of the character described, the combination with a former, a pair of nipping rolls for receiving the web therefrom, and a folding couplesaid parts being adapted to guide a web which is folded along the running edge of the web, a bracket having a. thin edge located within the folded web along both sides of which the two halves of the web are adapted to run, a. shaft perpendicular to the plane of the web, means for rotating said shaft, said shaft having thereon a member of a slitting couple located with the cutting edge at the edge of said bracket for the purpose described. 5. In a slitting device for a folded web, the combination of a guide bracket over which the two halves of the web are adapted to be guided on opposite sides, leaving the fold of the web to move along the edge of the bracket, the said edge of the bracket being thinned down to accommodate the web and having a notch therein, and a slitting device registering with the notch for slitting theweb along the edge of said bracket as the web passes along. I

6. In a machine of the character described, the combination with a former and a folding couple, said'parts being adapted to guide a web which is folded along the running edge of the web, of a bracket having a thin edge located within the folded web along both sides of which the two halves of the web are adapted to run, a shaft perpendicular to the plane of the web, a slitting cutter carried by the bracket and a cooperating roll on said shaft. e

7. The combination with a folding machine having a foldingcouple, of means for guiding a web to said folding couple, said web being folded along its running edge, of means for holding the folded web in place and against which the folded web passes and a slitter located on the opposite side of the foldto cut the web along the folded edge.

8, The combination with a folding machine having' a: foldingicouple, of means for guiding a web to said folding couple, said web being folded along its running edge, of means, located within the fold of the folded web andover which the folded web passes, for holding the fold, and a slitter located on the inside of the fold to cut the web along the folded edge, said last mentioned-means and slitter being located adjacent to the fold ing couple.

-9. The combination with a folding machine having a folding couple, of means for guiding a web to said folding couple, said web being folded along its running'edge,of 'aslitter located within the fold of the folded web and over which the folded web passes, and means located on the opposite side of the fold to press the web againstthe slitter.

10. In a folding machine, the combin'ation with means for feeding a longitudinally folded web, of means located within the fold of the folded web over which the folded web, passes, of a. shaft arranged transverseto the direction of the web, anda slitter on said shaft located on the opposite side of the folded web from said last mentioned means in position to slit'the web alongthe longitudinal fold line I V 11. In a slitting device for a folded web,

the combination of a guide bracket over i which the two halves of the web are adapted to be guided on opposite sides, the said edge of the bracket having a notch therein, a slitting device registering with the notch, and a roller in thenotch for cooperating with the slitter.

12. In a slitting device for a folded'web, the combination with a bracket over which the two halves of the folded web are adapted ,to' be guided on opposite sides, having. the

folded web to move along the edge of the bracket, the bracket having a groove in-its edge arranged longitudinally of the fold, and

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