US2007544A - Production of perforated webs - Google Patents

Description

July 9, 1935. 5. c. F. MEISEL I 2,007,544

' PRODUCTION OF PERFORATED WEBS Filed May 4, 1934 Patented July 9, 1935 1 UNITED STATES PATENT OFFICE PRODUCTION OF PERFORATED WEBS Otto C. F. Meisel, Milton, Mass, assignor to Meisel Press Manufacturing Company, Boston, Mass., a corporation of Massachusetts 7 Application May 4, 1934, Serial No. 723,856

4 Claims. (Cl. 101-226) This invention relates to the perforation of a number of small sections of restricted width as paper and the like whereby a sheet or strip is compared with the width of the web. These produced adapted ultimately to be torn along sections 1 are herein identified by the X or St. lines of weakness to produce small sections, as, Andrews cross thereon, which might be consid- 5 to cite a familiar example, a sheet orstrip of cred as a diagrammatic showing of some printed 5 postage stamps, although the strip or sheet may inscription. The sections 1 are arranged in lonnot be printed, and the object is to provide a gitudinal series but the elements of adjacent semethod of operation and a novel form of perries are offset. Herein the end of alternate lonforated web facilitating the production of such gitudinal rows are disposed in alignment and bestrips or sheets in a form permitting ready detween the ends of the intervening longitudinal l0 tachment of the sections as required. rows. Otherwise expressed, the areas are ar- My invention will be well understood by refranged in staggered relation. Transverse lines erence to the following description taken in conof perforation 9 are provided between the secnection with the accompanying drawing, wheretions and these perforations, corresponding to j V the ends of the sections, are likewise staggered, as 15 Fig. 1 is a broken plan view of a novel form clearly seen from Fig. 1, so that there is no conof web having a number of duplicate impressions tinuous line of perforation across the web. The thereon separated by transverse lines of weakweb 5, considered as a whole, therefore, has no mess; markedly weak point therein and can withstand Fig. 2 is a diagrammatic side elevation of a considerable traction, and in general after perfo- 20 printing press mechanism adapted to be used ration may be handled in substantially the same in the production of the article; and manner as an unbroken, unperforated web. Lon- Fig. 3 is a front elevation of a perforating gitudinal lines of perforation between the lonhead shown in Fig. 2. gitudinal rows of sections I may be provided in At the present time sheets or strips of forms, the usual manner or, if the product desired is 25 labels, stamps or the like are frequently proa series of sections in strip form, the web may duced on a web printing press, the printed secbe slit between the longitudinal rows. When so tions being arranged in transverse and longi- $1117, each Strip, of course, has lines of weakness tudinal rows in such number as the size of the ex nding mpl tely across the same, but as work permits. Perforating attachments, usually the W b cons in f a number of these strips 30 embodied as a part of the press mechanism, promay be handled as a unit for rewinding or the vide lines of transverse weakness extending across like, the weakened lines are offset and the benethe web between the transverse rows. Longitudifits of retained strength are still advantageously nal lines of weakness may be provided between realized.

the longitudinal rows, or, if the product is to Referring to Fig. 2, I have there shown in dia- 35 be packaged in strip form, the Web is slit begrammatic form a method of production in which tween the longitudinal rows. The web, slit or the web 5 is drawn from a supply roll H, through perforated. is finally rewound or otherwise disfeed rolls [3, passes through a printing couple I5, posed of. In handling the web after perforaand then is operated on by a perforating mechation difficulties occur because of breakage along nism H, which may be advantageously of the 40 the transverse lines of weakness. This is in part type described in the application of Charles A. avoided by leaving large ties. That is, the per- Meisel, Serial No. 691,189, filed Sept. 27, 1933, forations are relatively widely spaced, leaving a which mechanism forms the transverse lines of considerable proportion of the length of the line perforation 9. The longitudinal rows of imuncut to bind together the adjacent sections. pressions or sections may be separated from one 45 Obviously, however, it is then less easy to sepaanother by a suitable slitting mechanism l9 and rate the sections when they are to be detached one the slit web forwarded by feed rolls 2| to suitable from another in their ultimate application. Unrewinding mechanism forming the rewound der my invention such breakage is avoided while roll 23.

a clean line of perforation is provided along which The perforating mechanism I! here shown com- 50 the sections may readily be separated. If the prises a fixed knife 25 having a serrated edge material is to be printed, no additional difiiculties presented beneath the web 5 with which cooperate are encountered. knives 21 on a rotary head 29, the knives in the Referring to Fig. l, I have there shown a web rotation of the head making contact with the 5 5 of paper which is ultimately to be divided into web 5 at suitable intervals to cut transversely extending perforations therein. As seen in Fig. 3, at least the edges of knives 21 are discontinuous to form transversely spaced edge portions to cooperate with the fixed blade of knife 25 to form spaced lines of weakness, for example, along alternate longitudinal rows of the sections 1. Thus, in Fig. 3 the edge of the knife is ground back at 3|, leaving the true edges 33 corresponding to the length of the transverse lines of perforations which it is desired to form, the intervening spaces corresponding to the ground-back portions 3| corresponding to the intervening sections which it is not desired to perforate at that location. The succeeding knife has its active edge portions 31 arranged in staggered relation to those of the preceding one, their position being in alignment with the gaps 3! of the preceding knife. Obviously the arrangement of cutting edges among the several knives may be widely varied as conditions require.

A finely out and efficient line of perforationmay be provided without danger of breakage during production.

I am aware that the invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and I therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive; reference eing had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

I claim:

1. A paper web presenting a series of longitudinal zones each divided into sections by lines of weakening, the lines of adjacent zones being relatively displaced one from another.

2. The method of preparing strips having transverse lines of weakening dividing them into sections which comprises operating on a web of a width to provide a plurality of strips, forming spaced lines of weakness in longitudinal zones of the web, the lines in adjacent zones being relatively displaced one to another and longitudinally dividing the web to form the strips.

3. The method of producing small printed sheets which comprises feeding a relatively wide web, printing longitudinal series of inscriptions thereon, the impressions of adjacent series being relatively offset, separating the successive imprints of a series by lines of perforation, then providing division lines between the series and rewinding the web.

4. The method of providing strips of small sheets connected along perforated lines which comprises feeding a relatively wide Web, cutting longitudinal series of spaced lines of perforation therein, the lines of adjacent series being relatively offset, slitting the web to form strips and rewinding the so longitudinally divided web.

OTTO C. F. MEISEL.

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