USRE8580E - Improvement in paper-bag machines - Google Patents

Description

3 Sheets-Sheet '1.

J. WELLS,.

Assignor, by Mesne Assignments, to THE UNION PAPER-BAG MACHINE G0- Paper-Bag Machine. No. 8,580. Reissued Feb. ll, I879.

Jasc h 215a,,

3 Sheets-Sheet 2.

J. WELLS, Assignor, by Mesne Assignments, to THE-UNION PAPER-BAG MACHINE G0.

Paper-Bag Machine. No. 8,580. Reissued Feb. 11,1879.

Joseph "Ella, i Iruvc r0110 1;

. 8 Sheets-Sheet 3. J W E L L S Assignor, by Mesne Assignments, to THE UNION PAPER-BAG MACHINE C0.

Paper-Bag Machine. 1

No. 8,580. Reissued Feb. 11,1879. 1

UNITED STA ES-PATEN OFFICE.

THE UNION PAPER BAG MA HINE communes PHILADELPHIA, PA., ASSIGNEE, BY MESNE ASSIGNMENTS, OF JOSEPH WELLS.

[IMPROVEMENT IN PAPER-BAG MACHINE Specification forming part of Lctters latent No. 38,253, dated April 21, 1863; Reissue N o. 8,580,1latcd February 11, 1879 application filed December 14, 1878. I

' tion, reference being had to the accompanyini drawings, in whichigure 1 is a perspective view of a machine embodying said invention. Fig. 2 is a longitudinal sectional elevation of the same, Fig. 3 is a plan or top view of the same, the framework b ing omitted, and the cutting-cylinders being in section. Fig. 4 shows inside and end views, the lap-folder27 detached. .Fig. 5

shows in edge and side views the severingknife 2 detached.

- The construction of the machine is substantially as follows:

Aframe is provided of suitable size and form to contain the machinery. -In one end of this frainethere are placed the supporting roller 20, that carries a web of paper rolled upon it, the web-spreading roller 21, and the leading-roller 22, with'their middle placed at a distance from the central line of the machine equal to one-half of the required width of the lap, and on the side of said line on which is situated the lap-folder 26. The roller 21 is made of an elliptical form.

Situated a. convenient distance forward of the rollers 20 21 22, and set up edgewise, are two guideblocks, 23 24, with the longitudinal central line of the machine passing between them. They are of suitable length, and of any convenient height exceeding the required width of the folded-paper, and from theinrearward lower endsthey arebevelcd at an angle of forty-five degrees (more or less) nearly to their upper edges, the remaining distance be-.

ing slightly rounded up. The inside angles of the ends-of said guide-blocks, are rounded 0H, and the distance between their respective planes is such that the thin vertically-adjustable foldin disk 25, with a plyof paper on,

each side .0 it will freely move between them. Said folding-disk 25 is of any required diameter, and is situated near the rearward ends of said guide-blocks, it being journaled in a bracket, 33, which depends from a cross-bar,

4.9, so that its lower edge is adjusted a distanee from the inside bottom surface of said guide-blocks to suit the required thickness of the folded ipaper. On the upper edge and 'near the rearwarc end of the guide-block 23 is fixed one of the lap-folders 26, which is made in the form of a right-angled triangle, with 'its short lineex tending directly across the edges of said guidebloeks, thus situating its hypotenuse obliquely across the said edges. Between the plane, of said lap-folder and the edge of the guide-block 24 there is suflieientspa'ce to allow the lap to pass through. The other lap-folder, 27, is situated in front of the lap-folder 26, and on the guide-block 23 with it, and is constructed substantially the same but instead of its plane being at right angles with the plane of the guide-block 23, it is parallel with and at a distance from it suflicientto .allow the folded .la'p-of paper to pass through. .A portion of the guide-block 24 is removed, to .allow the lapfolder 27'-and the paste-wheels 10 11 to be placed in their proper position. One of. said paste-wheels, 10, is placed in a horizontal position, with its edge rolling against the edge of the folded paper'onto which the lap is to be folded, and between said lap-folders 2627.: The other paste-wheel, 11,revolves in a paste vat, 13, with the upper edge of its inside plane working against the edge of the pastewheel 10.

' Directly forward of -said guide-blocks there are situated two upright cutting-cylinders, 30 31, whose circumference corresponds with the length of the bag to be formed plus the lap which, folded, forms its bottom, and of any convenient length exceeding that of the width of the folded tube. There is fixedin one of these cutting-cylinders, 30, asevcring' knife, 2, havin g a serrated edge, which extends from the upper end of said cylinder 30 down nearly to its middle, when ittnrns in a forward direction with respect to the motion of said eylin der, and extends obliquely across said iuiddle the required distance, when it turns again and extends down to the lowcrcnd of the said cylinder. The two straight portions of the ed'ge of this knifc are so set with're'spcctto each other as to occupy difi'erent vertical planes, 1

i and its being this separated a distance corresponding with the width of lap required for form-. ing the bottom of the bag,'and in the middle 3, formed inits surface, which grooveis adapted, to receive the edge of the severing-knife 2.

These cutting-cylinders are. further provided with circumferentialgrooves 14 15, formed in their middle portion, to allow the passage of the securing-rod 16, the rear end of which-rodis attached to the bracket 33, that supports the folding-disk 25, from which this rod passes between the guide-blocks 23 24; and its forward end, just after passing between the cutting cylinders 30 31 in the grooves 14 15 thereof, is joined to the angle or rearmost part of the turning-plate 32.}-

flheturning-plate32 isofanyrequiredlength, eatest width is slightly less than the width of the folded tube, its thickness being such as is required. It' is triangular in itsform, and has a portion of its forward end removed, thus leaving a hearing or lip, 7 8, on

eitherside, that rests upon one, 18,. of the feeding or drawing rollers 17 18, saidrollers being cut away at their ends, as shown.

-When inits proper position a transverse line through the plane of thisjturning-plate will be at right angles to the axes of the cutting-cylinders 30 31.-

' Situated above the feeding or drawing roller r 18, and in working contact with it, is a coinpanion feeding or drawing roller, 17. The diameters of said feeding or drawing rollers are reduced where the bearings or lips 7 8 of the turning-plate 32 pass between them sulficiently to prevent their impinging upon said bearings or lips, the structure being such that I a tube supported upon saidturning-plate may 'be nipped by said rollers, and be therebyfed onward. Said feeding or drawing rollers are operated by the'pulley 34 and bell35.

At a convenient distance in advance of the feeding or drawingroller' 18, and on a horizom tal line with it, arejourn'aled two folding-rollers,

1 40 41, suitably gearedtogether, and operated in unison by a bolt, 36, receiving motion from the roller 18.

Situated above these foldin g-rollers 40 41 is a paste-b0x, 42, the bottom of rwhich has an open mouth, 38, of any convenient-length exceeding the width of the paper tube, and working-againstsaid mouth 38 is a curved vibratin g pasting-plate, 39, whose length is sufficient to cover said slot. 'The width and curved form of this plate is such that during its vibrations over said mouth the same, is always closed,

and yet admits the passage of a suflicient amount of paste to properly coat the exterior operated by the lever 44, rock-arm 45, connect.-

ing-rod 46, and the tappet 47, attached to one end of the driving-shaft 48.

1 When not undergoingvibratiou, said pasting-plate is held with its lower edge nearly up to the lower edge of the mouth 38 by the spring 37, andthe parts are'lso arranged that in its downward movement the lower edge of said.

p.aste,.and a web of paper of the required width in the form of a roll is placed on the roller 20, The end of the paper web is passed over the leading-roller 22 and under the spreading-roller 21, which, bcin g elliptical in .its form, preserves the bearing across the paper while it 'is being folded or doubled trans versely. The endof the paper web thence passes under the adjustable folding-disk 25,1which holds it down the required distance from the upper edges of the guide-blocks 23 24, while its-two sides are upturned or folded by said guide-blocks as said sides pass between them.

The'middle of the roll of paper having been placed on one side of the central line of the machine, it follows that one of the edges 'of the .web will now be even'with the upperedge of the guide-block 24, 'while its other edge will project above the upper edge of the guide-block 23 a distance sufiicient for formingthelongitudinal lap, which edge, coming into contact with the lap-folder 26, will he 'turned by it at right angles and across the edge of the guide-block 24, while the other edge will pass between the guide-block 23 and the edge of the paste-wheel 10, causing said wheel and't-he wheel 11 to revolve, and thus causing paste't o be received from the latter, and to be applied by the former to said edge of the web As this turned edge of the. web

passes through the lap-folder 27, it is further turned over, so as to embrace the other or pasted edge of the web,'thereby, uniting the said edges of the web by a pasted longitudinal .seam, and forming a tube, which pasted seam is pressed flat as the tube passes through the cutting-cylinders 30 31.

The cutting-cylinders are put in motion turning the crank 50 in the direction Indiscated by the arrow, thereby drawing the paav perweb between them, wherebythe above-described operations of :folding and pasting and seam-forming, to convert the paper web into' artube, will be continued till the roll of paper is exhausted.

At each revolutioniof said cutting-cylinders .plate 32, which, while supporting it, distends or turns the tube laterally, so that its central parts are changed to form its edges, and vice versa, thus bringing the bottom lap into its groper position to be folded to complete the ag-bottom when said lap passes to the bot t0m;closing mechanism.

The laterally distended or spread tube now passes between the feeding or drawing rollers 17 18, by which it is drawn forward to the bottom closing or finishing mechanism, the said uncut spaces uniting successive baglengths, serving to hold it together and enable it to be carried forward. When said feeding or drawing rollers have moved the tube the required distance beyond the vertical line of contact of the folding-rollers 40 41, the tappet 47 will operate the" curved pasting-plate 39, causing its lower edge to descend upon the bottom lap, and to force it between and into the nip of said folding-rollers, at the same time causing said lap, as it turns upward, to come into contact with the surface of paste on said pasting-blade and to receive paste therefrom. When the tappet 47 ceases its action the pasting and folding blade 39 is quickly raised to its upper position by the action of the spring 37, while the bottom lap, seized by the folding-rollers, is folded onto the body of the tube, which, passingthrough the foldingrollers 40 41, completes the-formation of the bag-bottom.

As the said folding-rollers are operated by the .belt 36, which passes over an enlarged pulley on the end of one of the feeding or drawing rollers, and thus are revolved more rapidly than said feeding-rollers, it follows that a tension is created upon the bag-tube which severs the said uncut spaces .or connecting-link between the forward bag and the succeeding bag-length, by which operation the bag is completed and is fed out'ot' the machine, while the bottom lap of the next succeeding baglength is fedover the said folding-rollers, to be in like manner manipulated.

The tension of the belt 36 is so regulated that it slips when one bag-length is being acted upon at the same time by both the feedingrollers 17 18 and the folding-rollers 40 41.

What is claimed is- 1. The method of formingpaper bags, the same consisting in, first, partially severing a tube by transverse cuts, whereby the extent of a bag-length is defined, free edges adapted to be disposed to constitute the bottom of a'bag are obtained, v and 'an uncut portion of the tube remains, which connects successive baglengths together; second, spreading and flattening said tube, so as to properly dispose the free edges that are to constitute its bottom; third, pasting and folding said bottom; and, fourth, severing the uncut portion of the tube, all substantially as described.

2. In a bag-machine provided with mechanisms for pasting and folding a severed tube. so as to close its open end and form the-bottom of a bag, the combination therewith of a cutting mechanism adapted to but partially sever said tube, and thus provide it with an uncut portion, whereby such successive partially-detached bag-lengths of the tube may be drawn from one mechanism to anotheruntil the forward bag is completed, all substantially as de scribed.

3. The combination of a mechanism for formin g a web into a tube, a cutting mechanism par tia-lly severing said tube transversely, and providing free edges adapted to form the bottom of a bag, mechanism forfoldin g said bottom, and mechanism for severing the uncut portion of the tube and detaching the forward bagdength from the succeeding one, all substantially as described. I

4. The combination of a cutting mechanism partially severing a tube transversely, and providing itwith an uncut portion connecting successive bag-lengths of the tube, and free edges adapted to form a bag-bottom, mechanism for spreading and flattening said free edges, and disposing the parts of the bag-bottom for subsequent manipulation, a pasting mechanism, and a folding mechanism for com plating the said bag-bottom, and a; mechanism for severing said uncut portion of the tube, all substantially as described.

. 5 The combination of the following instrumentalities: a mechanism partially severing a tube transversely, and providing it with uncutportions conuectin g successive bag-lengths, and free edges adapted to form a bag-bottom, a mechanism for spreading and flattening said free edges and disposing the parts of the bagbottom for subsequent manipulation, a pasting mechanism and folding mechanism for completing said bag bottom, mechanism for drawing or feeding said partially-severed tube through the machine, and mechanism for severing said uncut portions of the tube and detaching a,finislied bag'from the succeeding bag-length, all substantially as described.

6. -The guide-blocks 23 24, constructed and arranged in respect to each other substantially as described.

7'. The combination with the guide-blocks 23 24, of the folding-disk 25, substantially as described.

8. The combination, with the guide-blocks I described.

10. The combination of the turning-plate 32,

4 swso cutbi'n' cylimiei7s 30 31, and feeding or draw- In witness whereof TEEUNION'PAPEB BAG ing to lera 17 18, substantially as described. MACHINE COMPANY, by Enwm J .Howm'n', v

11.- The eombiiiation of the pasting-plate39 'presiqent, have hereunto setthoir hand.

with the paste-box 42, provided with a mouth, THE UNION PAPER BAG MACHINE COMPANY, 38-, substantiallyas described. y EDWIN HOWLETT, d I'L- 12. The combination, with the folding-disk- P Witnesses: 215, of t:zhe elliptical roller 21, substantially as H. T. MUNSON, escri ed. o

GEO. H. Gianna.

Images