US2055086A - Refuse bag - Google Patents

Description

sept. 2z, 1936;

REFUSE BAG y 2 Sheets-Sheet l Filed 'June 2o, 1954 .mlllulllull INVETOR @fo/Paf h/ POP/2f.

v BY G. w. POPPE sept. 22,1936.'`

INVENTOR Gff /1/ PoP/f BY ATTORNEY 2 Shees-Sheet 2 REFUSE BAG Filed June 2o,` 1954 web prior to folding the same.

shaft I8 carries three dies, 2|, 22 and 23. The die 22 makes the slit 'l which is central of the web, while the dies 2i and 23 make the slits 5 and 6, the slits 5 and 6 being of equal length but of these gaps are indicated at 9 inY Figure 3, one f gap appearing in the web in line with the slits and another in the tube, as shown in the` same figure.y Athlrd'gap isbetween lthe two shown but is hiddenv by the fold of ,the web.' yZit-follows from this methody of pasting that 'i'whilethev entire rear'wall of the bag below the scorediline 8 is pasted, thatportionjabove'the scored-linea unpasted.' This method of applying the paste is illustrated 'more clearly'linFigure 4r where thev v paste-disc 24, is provided With'a: cutout portion 25.

' The-size' ofthe disc, of course, must besuch that f the vpaste-applying portionof its.y periphery is equal tothe 'length oltlfiel seanifwhich'ls to be pastedfwhilethe cutout fp ortlon'25 is equal to" -the gap that is tov be created'in the paste line.'-

The disc 24mll8t-alsobe correctly timed and th'ereforeit is postively driven'. is accomplishedfby vmeans of-a sprocket chainj26` passing over a sprocket, not shown','but which isv secured to fthelshaft', 28. l The-,shaft A2li is geared in a asfis well known in the.l bag machineart,r make lone'rotation for-each baglmade. Therefore the pasteeapplyingdisc 24 will 'rotateiin the same ratio.'I .1 y y The web,liafi'.er.being folded Aabout the former I y and `formed into thebag tube',' is drawn along by the. usual feed rollers 33 k,The j edgejof the yformer-is serrated at 32 and [there is thejusual ylip'knife 34 .forfcuttingjthe'l bagy tube'into bag lengths, this operation being eected through the medium vof the pinohbar's-Zgjwhich momentarily retard theitube atvthe instant that the striker bar 36 delivers a sharp blowy to the tube from beneath,

After a bagl section severedA from the bag `tubeand at the ,instant` that the Apinch bars free vit,`the bag tube is .pulled forward by Vscoring rollersA 33. Thebag -then .passesv to the `usual cylinders 40 lwhichgfold andpaste'the bottomafter which the bag passes under a" guide roller 42` and between' other scoringrollersAll; The rollers 38 form.y the score; line Hl whilefthe l'rollers rk44 form the Yscore Vline 3 asl will be .readily/understood.

`'46 represents .a paste-supply rollerjfromvwhich paste is `wiped off bythepaste bar 41 yto apply a line-of" paste to the bagbottom as'is common The scoring rollers38 and the cylinders 40,'to-

`vvgether with -the scoring rollers 44, 'guide rollers 42 and paste-applying roller 46, are mounted onY a' carriage which maybe adjusted by means of a *rackv 48 engagedbypinion 49." This fmechanism is also common ingbag machines* and is 4for ythe f purpose vof making adjustments for different bag lengths f and need not. be

' detail. j l ,n

` foregoing it will be apparent that described in Y further From the the bag is formed by slitting a web of paper at y the web but leaving gaps in the paste line.

- 2,055,080 ymotion from the lower pinch bar shaft 20. The

three points transversely of the web, folding the web to form a bellows bag tube with the inneredge of each bellows fold coincident with one of the slits. This will be clearly apparent from Figure 3. The method further consists in applying a line of paste at intervals to the edge of The timing of the folded tube is such that the gap in the paste line ofeach tube is located adjacent the bag mouth as also indicated in Figure 3.

The score line I0 `is for the purpose of making it more convenient to square the bag bottom prior to inserting it in the refuse container and thisfscore yline maybeomitted if desired.

vBy reason of theimethod employed, the bag of ymy .present invention may be made on an ordinary bag machine at high speed and with no waste of paper.

The leaving of a portion of the seam line unpasted serves the purpose of a slit and has the further advantage that all of the slits which are necessary in the' practice'v of my present method can be made in the web. If. an attempt were made to slit the rear wall of an ordinary bellows bag tube the slit would pass through-the pasted portion. Sluch a'slit would moreover have to bey made after the tube were formed which is not s0 convenient a method as slitting in the web.

What I claim is:`y 1. A refuse"y bag consisting of a bellows folded tube having 'a closed bottom and open mouth, the bellows ofwhich are so folded as to produce a substantially square bottom when opened out, the mouthof the bag having slits in the walls lthereof and along linescoincident with the bel- 3. A refuse holder consistinglof a bellows 'bag having a'front wall and a rear or seamwall, a slit in the front wall and slits inthe inner fold of each bellows, said lslits extending from the mouth of the bag downwardly a distance suiflcient to permit the bag when opened out 'to present a at-bottom and to permit the top to be folded over to form a collar to support the bag in position within a receptacle. y,

4. A bellows bag having a slitted front wall and a seam wall, the seam of vwhich is unpasted for a distance extending fromthe topedge of the bag to a. point coincident 'with the lower end of the slit in the front wall.v

' 5.A bellows -baghaving a slitted front wall,

slitted bellows the latterfsllts being at vthe inner y fold of the'bellows. anda seam wall, the seam of which is unpasted for a distance extending from thetop edge of the bag to a point coincident lwith the ,lower ends of the other slits.

6.A Abellows bag having afront wall anda seam wall, a bellows fold'between saidwalls, a transverse score line spaced from the mouth of the bag,` said front wall.- andthe inner fold of lsaid bellows being slit from the mouth of the bag to said score line and said seam being unpasted from the score line to the bagmouth, the remainderI of the Lseam being unpasted.

' GEORGE w. PPPE.

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