US1488715A - Guiding mechanism for paper feeding and cutting machines - Google Patents

Description

April 1, 1924. 1,488,715

\ H. A. SVIGNE GUIDING MECHANISM FOR PAPER FEEDING AND CUTTING MACHINES Filed Nov. 7. 1922 /VVENTOH WVM A TTUHNEY Patented Apr. l, i924.

irlll@ STATES PATENT naem- HENRT A. SVIGN, OF WINTHEOP, MASSACHUSETTS, ASSIGNG-R TO NATTOTAL 233,315.1)

WRAPPING MlAC-IINE COMPANY, OE BOSTON, EIASSACHUSETTS, A CORPO-BIIION 0F IVIASSACHUSETTS.

` GUIDITG MECHANISIII FOR lAPER FEEDING AND CUTTING: MAGHNES.

Application led November 7, 1922.

To ZZ who/2i it may concern.'

Be it knoivn that I, Herrin A. SVIGN,

a citizen ofthe United States, und resident of lVinthrop, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Guiding Mechanism for laper Feeding and Cutting Machines, of which the following is a specification. s

This invention relates to machines for cutting paper into sections and has partieular reference to `that type of machines which intermittently draw paper from a supply roll and push it to position Where a knife outs it transversely.

Machines of 'the type referred to usually arrest the web of paper while the knife is acting, the paper being then advanced directly after the knife has receded from cutting position. When the paper is advanced, its front edge where the knife has just acted, often curls so that the next section to be cut does not lie flat. This is due to the fact that the portion which is to be passed under the knife is flat and incapable of resisting tendency of the air in front of its edge to deflect said edge.

The object of the present invention is to provide means for causing the paper to be automatically stiifened longitudinally by slightly bending it along lines parallel with the direction in which it nioves toward the knife. This is effected preferably by so guiding the paper that the portion adjacent to and approaching the knife has several Waves parallel with its side edges.

With said object in view, the invention consists in the construction and combination of parts substantially as hereinafter de scribed and claimed.

Of the accompanying drawings which illustrate so much of a paper feeding and cutting machine as is necessary to an explanation of the present invention Figurel is a plan view of a portion of the bed over which the paper is intermit4 tently advanced, said view also illustrating the paper and the guiding or Waving means.

Figure 2 represents a section on line 2-2 of Figure l.

Figure 3 represents a section on line 3 3 of Figure l and also illustrates siulie'ent Serial No. 599,511.

portions of the feeding and cutting mechanism `of a Well-known machine which will be hereinafter referred to.

Referring first to Figure 3, a drinn and a roll or rolls 87 carried by a shaft 89 intermittently push or feed the web of paper over a bed 88 which is transversely slotted at 122 for the passage of a knife 121:) which is raised and lowered by any suitable ineans such as suitable connections with arms 132 of a rock shaft 13S.

As illustrated by Figures l and 2 in connection with Figure 3, the bed 88 is formed or provided with a. series of ribs c parallel With each other and With the direction in which the paper is fed by the drum and rolls. Alternating with said ribs and supported far enough above the bed to permit the paper to pass, are upper ribs Z1 the lower edges of which are in a plane slightly below the plane of the tops of the bed ribs a. The ribs Z) may be considered parts of a frame as they are connected together and held in parallelism by tivo transverse bars c, (l. As

illustrated in Figure l, the bar d is longer than the Width of the web of paper P and its ends removably engage keepers c mount ed on marginal portions of the bed 88.

Rising from the bar c near each end is a hook f. The two hooks f are adapted to removably engage any suitable member of the feeding and cutting machine, such as a rod or shaft indicated at 91 in Figure 8, so as to hold the deflecting ribs 7u at a point high enough above the surface of the bed 88 to not bind the paper against said bed vand vet lovvr enough to deflect the paper between the bed ribs a.

Tn 0peration,that portion of the paper Which is under the ribs Z) is so corrugated or waved longitudinally or in the direction of feed, said corrugations or waves extending close to the knife 129 (Figure 3)., as to be temporarily stiffened clear to its front edge (the edge which was last cut by the knife). This is because the ribs entend close to the path of the knife as illustrated by Figure 3, Consequently, when the next feed or advance occurs, there is no liability of the edge 'curling up or down. @Wing to the fact that all of the ribs of one set kare offset or spaced laterally from the ribs c, of the other set, there can be no pinching of the paper which is being pushed between them by the action of the feeding vrolls 87, 88. Consequently there is no such frictional holding bach of the paper as would tend to, interfere with feeding to the knife in smooth condition.

rhe numerals employed herein are those which designate parts having the saine nu aierals in Letters latent No. 1,253,636, granted to Sevigne and Arnold January l5, ll to vwhich reference may be had for eX- planation of a machine in Which the present invention has particular utility. The reference letters employed herein designate the parts Which cooperate with those having nunierals in attaining the objects of the present invention. The patent referred to is for a bread Wrapping machine, but I do not liinit myself, so far as the present invention is concerned, to any particular Inachine which feeds and cuts paper, and for this reason deein it unnecessary to illustrate non-essential parts of any complete machine.

Having now described my invention, I 25 claim:

l. In a machine for feeding and cutting paper, a set of straight Vupper ribs and a set of straight lovver ribs alternating With each other in relative positions whereby all the ribs of one set are spaced laterally frein the ribs of the other Yset to cause the paper to assume a longitudinally7 waved condition when approaching position to be cut.

2. VIn a machine of the characterdescribed, bed having upwardly projecting parallel ribs, a pair of coacting rolls for pushing a web of paper over said ribs, a knife movable across the path of the paper, and a fraine having downwardly projecting ribs alternating With laterally spaced from the ribs of the bed and parallel therewith, the ribs of ther bed and fraine extending close to the path of the knife.

In testimony whereof I have affixed my signature.

HENRI A. srvienn.

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