US1747857A - Paper-web-feeding machine - Google Patents

Description

5. J. 'CAMPBELL PAPER WEB FEEDING MACHINE Feb. 18, 1930.

Filed Feb. 6, 1929 Patented Feb. 18, 1930 UNITED STATES PATENT OFFICE SAMUEL J. CAMPBELL, 0F GREEN BAY, WISCONSIN, ASSIGNOR IO HUDSON-SHARP MACHINE COMPANY, A CORPORATION OF WISCONSIN IRALPIEIR-'WEIB-FEIIEIDING MACHINE Application filed February 6, 1929. Serial No. 337,753.

This invention relates to improvements i paper web feeding machines.

The machine of the present invention is designed primarily for the purpose of feed- 6 ing a continuous strip or web of paper through embossing rollers and afterwards cutting oil the embossed sections to form paper napkins, and in the exemplification of'the invention shown and described the 10 machine is arranged as a duplicate machine for simultaneously feeding two strips or webs through the rollers and cutters.

In view of the fact that the same embossed design is repeatedly applied to the 15 paper web, and that the paper sections must be cut or severed between the embossed de signs, it becomes important to provide adequate means. for properly regulating the feed in such a way that the cutters will in'each instance act to sever the sections along the proper line so as to produce two napkins or the like on which the design is evenly and accurately centered.

Since the machine is designed to simultaneously operate on two webs or strips, the requirement for accuracy is particularly important, and in the case of the present invention. adequate means are provided for adjusting the webs individually and also for properly adjusting the relation of one web to t e other. The machine is one which is designed to feed the webs in unison from two separate rolls of paper in superposed relation through moving rolls, after which .the webs are separated and fed individually over formers which longitudinally fold the webs prior to their passage through cutting rolls which Tervefio sever the webs into sections of proper en t 1% view of the fact that the webs pass in unison through the embossing rollers, and are afterwards separated and fed through different paths, it becomes necessary to provide means for accurately adjusting the instrumentalities Which control the paths eradvance of the respective webs, and the present invention is directed to the provision of adequate means for this purpose.

The invention also relates to the general Fig. 2 is an end elevation thereof, taken on line 2-2 of Fig. 1; p

. Fig. 3 is a view taken on line 3-3 of Fig. 1; Fig. 4 is a view taken on line 4-4 of Fig. 1 Fig. 5 is a detail taken at right angles to Fig. 4, and showing the means for adjustingthe elevation 01 the bars for guiding the paper webs; t Fig. 6 is a view taken on line 6-6 of Fig. 1; and Fig. 7 "is a view taken on line 7-7 of Fig. 6. The maclnne as a whole comprises what may be termed an embossing section 10 and a folding and cutting section 11 in close proximity to one another,

lower arms 13 and upper arms '14, which respectively support the paper rolls 15 and 16.

The embossing seclllOIl comprises a frame 12 prov1ded wlth The paper webs run from the rolls in superposed relation to, one another and pass between upper and lower embossing rolls 17 and 18 suitably mounted within journal boxes. The rolls may be adjusted with respect to one another by a screw adjustin device 19 of any suitable form which is a apted to regulate the pressure between the embossing rolls.

As shown, the upper roll 17 "ism'ounted upon a power driven shaft 20, while the lower roll 18 is mounted upon a shaft 21 in superposed relation to one another, and the two pa er Webs are fed between the embossing rol s, the lower paper web being fed over an idle roll 22 which brings it immediatelylbea neath the upper web.

' The two webs, after being suitably embossed between the rolls 17 and 18, pass between a second set of embossing rolls 23 and 24. mounted upon shafts 25 and 26, the latterof which is power driven.

In order to rotate the two sets of embossing rolls at a uniform rate of speed. intermeshing gears 27 and 28 are mounted upon to maintain the paper webs in a proper plane the shafts 20 and 26 respectively, and the gear 27 is suitably driven by means of a sprocket sate for inequalities in the feeding ofthe rechain-29 and gears 30 which derive power from a main power shaft 31.

The power driven rolls 17 and 24 are necessarily of the same size to emboss one napkin during a complete revolution, while the roll 18 may be of double size having a circumference of alength to act upon two succeeding napkins. The rolls of smaller size can be built up to any desired surface area by the use ofplates having the designs embossed thereon, which arrangement varies the capacity of the machine to operate on napkins of varying size. As illustrative of this principle, the rolls 18 and 24 are shown, of different diameter, although ro diameter might be substituted.

Suitable screw means 82 are provided for regulating the pressure upon the second set of embossed rolls. After leaving the second set of embossing rolls, the paper webs are separated and pass respectively under an upper cross bar 33 and a lower cross-bar 34, best illustrated in Figs. 4 and 5. These bars are of travel to compensate against any tendency of either web to work laterally to its correct path of advance.

At each end, the bars extend through a bracket 35 which is provided with a pair of vertical slots 36 and 37, through which'the ends of the respective bars extend to permit vertical adjustment thereof. In addition to the slots 36 and 37, each bracket is provided on each side with an inwardly extending flange 38 provided with a vertical slot 89.

The cross bars 33 and 34 are provided at each end with a laterally extending stud or .post 40 which passes through the adjacent side slot, and each of these studs or posts is threaded to take a knurled nut 41, which may be screwed down. to clamp the end of the rod in proper vertically adjusted position. This arrangement enables the respective bars to be adjusted vertically to the desired degree, or to be slightly tilted at either end to compenspective webs.

The lowermost web, after passing under the bar 34, now passes upwardly over a roller 42, and thence downwardly under a roller 43, which latter is journalled between swingmg arms 44 which are journalled upon the axis of the roller 42, and are adapted to be clamped in properly adjusted relation by means of suitablerclamping nuts 45 coacting with slotted segments 46. I

The lower paper web, after passing under the roller 43, passes upwardly over a roller 47 and thence downwardly over an'obliquely disposed former 48 which serves to longitudinally fold the paper web and direct it downwardly.

s of the same The upper web, after passing under the bar 33, passes upwardly and through a set of'feeding rolls 49 and 50, the latter of which is power driven through the medium of a sprocket chain 51 deriving power through gearing 52 in train with the shaft 31. The upper Web passes through additional rolls 53 and over a roll 54 immediately above a former 55 located in spaced relation to the former 48, so that the upper web will be folded and travel downwardly in the same plane as the web first referred to.

In order to permit adjustment of the power driven roller 50, with respect to the sprocket chain 51, the arrangement shown in Figs. 6 and 7 is proyided. The sprocket chain passes around a sprocket wheel 56, which is formed integral with a disk 57 provided with outwardly extending bolts 58 which pass through circumferentia-lly elongated slots 59 formed in a disk 60 rigidly secured-to the end of a shaft 61 upon which the roller 50 is mounted.

By loosening the bolts, the sprocket wheel can be turned freely to the extent necessary to secure, a proper adjustment between the sprocket chain and the roller. This enables the upper web to be adjusted back and forth within adequate limits to secure proper feeding relation between the upper and lowerwebs, in addition to which the lower web may be adjusted by swinging the arms 44 which carry the roller 43, so that the distance between the roller 43 and the roller 47 may be varied, thus varying the length of travel of the lower web between the embossing rollers and the roller 47.

After passing down over the formers 48 and 55, the longitudinally folded webs pass down through cutting and folding mechanisms in all respects like those shown in Campbell Patent No. 1,666,086, issued April 17, 1928. The special details of these mechanisms form no part of the present invention, and it is not deemed necessary to describe them in detail. It suflices to say that they include cross folding rollers a and b (the former of which acts as a cuttin roller), cooperating with a folder blade Ynot shown) which acts against the once folded and sever d web sections and carries them into the bit I? the rollers ab which complete the cross fold and deliver the twice folded napkins to carriers 0 which carry them down to the trough d in which they are stacked, all as shown in detail in the patent referred to.. These mechanisms serve to simultaneously cut both of the once -folded webs into sections of the .proper length and to .cross fold the cut sections so thatthe embossed napkins are delivered twice folded from the machine. These mechanisms, however, must be synchronized with the embossing and feeding mechanisms. and for this purpose the driving sprocket chain 62 passes over a sprocket 63 which is adjusted through the provision of discs 64 in all respects like those previously described.

In operation, the superposed up er and lower webs will pass between the rst and second set of embossing rollers to receive the desired impression, after which the webs will be separated and pass individually under the cross bars 33 and 34;, which are adjustable to insure accurate directing of the respective webs, after which the webs pass through separate paths and over the respective formers to the cutting rollers. Since cutting means are employed, it is essentlal that the two webs reach the cutting point in accurate alignment with one another, 1n order that the cut may occur between the embossed patterns. r This requires that the duplicate patterns on the respective webs reach the cutting point abreast one another; and to insure accuracy in this adjustment. the length, of the feeding path for the lower web may be adjusted by the means heretofore described, and in addition to this the feeding of the upper web may be adjusted by properly setting the roller 50 with respect to the power transmission derived from the shaft 31. In like-manner, the cutting rolls may be adjusted in accurate relation to the source of power, and these adjustments are quite important in view of the fact that all portions of the mechanism are driven from the same shaft 31, so that a proper synchronizing of the embossing, feeding "and cutting instrumentalities is required.

It will be understood, however, that it is not the intention to limit the invention strictly to the employment of all of the adjustments described, although for convenience and accuracy in feeding all are desirable.

Although the invention has been described with particularity as to detail, it is not the intention to limit the invention strictly to the features shown and described, since modifications thereof may be made without departing from the spirit of the invention.

I claim:

1. In mechanism of the class described, the combination of means for supporting a pair of paper rolls, means for feeding the webs coming from the rolls in superposed relation to one another, means for embossing the superposed webs, means for separating the webs and feeding the same individually, means for var ing the length of the feeding path of one o the webs, means for bringing the two webs into relation abreast of one another, and cutting devices for simultaneously severing corresponding sections from the two webs.

2. In mechanism of the class described, the combination of means for supporting a pair of paper rolls, means for feeding-the webs coming from the rolls in superposed relation to one another, means for embossing'the superposed webs, means for feedmg the same individually, means for varying the length of the feeding path of one of the webs, means for bringing -the two webs into relation abreast of one another, cutting devices for simultaneously severing corresponding sections from the two webs, the feeding means including guide bars beyond the embossing means for separating the previously superposed webs, and means for individually adjusting the angularity of the guide bars.

3. In mechanism of the class described, the combination of means for supporting a pair of paper rolls, means for feeding the webs coming from the rolls in superposed relation to one another, means for embossing the superposed webs, means for separating the webs and feeding the same individually, means for varying the length of the feeding path of one of the webs, means for bringing the two webs into relation abreast of one another, cutting devices for simultaneously severing corresponding sections from the two webs, means for driving the embossing, feeding, and cutting instrumentalities from a common source of power, and adjusting means for securing synchronization between the driving of the several instrumentalities.

for bringing the two Webs into relation abreast of one another, cutting devices for simultaneously severing correspondlng sections from the two webs, the feedlng means including guide bars beyond the embossing means for separating the previously superposed webs, means for individually adjusting the angularity ofthe guide bars, means for driving the embossing, feeding, and cut ting instrumentalities froma common source of power, and adjusting means for securing synchronization between the driving of the several instrumentalities.

5. In mechanism of't-he class described, the combinationof means for supporting a pair of paper rolls, means for directing webs derived from saidrolls into superposed relation to one another, embossing rolls through which the superposed" webs are fed, means for separating the superposed webs and directing each through a separate feeding path, a former for'each of the webs, adapted to longitudinally fold the web, the two formers being positioned to direct-fthe folded webs into abreast relationship to one another, and means for severing correspondingly embossed sections from the respective webs/ 6. In mechanism of the class described, the combination of means for supporting a pair of 'paper rolls, means for directing Webs derived from said rolls into superposed relation to one another, embossing rolls through which the superposed webs are fed, means for separating the superposed webs and directing each through a separate feeding path, a former for each of the webs, adapted to longitudinally fold the web, the two formers being positioned to direct the folded'webs into abreast relationship to one another, means for severing correspondingly embossed sections from the respective webs, and means for varying the length of the feeding path of one of the webs between the embossing rolls and the former for said web.

7. In mechanism of the class described, the combination of means for supporting a pair of paper rolls, means for directing webs derived from said rolls into superposed relation to one another, embossing rolls through which the superposed webs are fed,means for separating the superposed webs and directing each through a separate feeding path, a former for each of the webs, adapted to longitudinally fold the web, the two formers being positioned to direct the folded webs into abreast relationship to one another, means for severing correspondingly embossed sections from the respective webs, means for driving the embossing rolls, the feeding means, and the cutting means from a common source of power, and means for synchronizing the driving of said respective instrumentalities.

8. In mechanism of the class described, the combination of means for supporting a pair of paper rolls, means for directing webs derived from said rolls into superposed rela tion to one another, embossing rolls through which the superposed webs are fed, means for separating the superposed webs and directing each through a separate feeding path, a former for each of the webs, adapted to longitudinally fold the web, the two formers being positioned to direct the folded webs into abreast relationship to one another, means for severing correspondingly embossed sections from the respective webs, means for varying the length of the feeding path of one of the Webs between the embossing rolls and the former for said web, means for driving the embossing rolls, the feeding means, and the cutting means from a common source of power, and'means for synchronizing the driving of said respective instrumentalities.

9. In a machine of the class described, the combination of, rolls adapted to feed superposed webs between the rolls, cross bars adpaths of movement, said means including a

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