US1053655A - Paper-bag machine. - Google Patents

Description

T. J. SHBRRARD.`

PAPER BAG MACHINE. APPLIOATION HLBD 11212.29, 1911.

1,053,655, Patented Feb. 18,1913.

2 SHEETS-SHEET 2.

INVENTOR 47m. wang, 05111111110, mm 9u @1 gm gg:

' matter or THOMAS J. SHERRARD, 0F WELIJSBURG,

SHERRARD PAPER C0., 0F WELLSBUBG, WEST VIRGINIA,

WEST VIRGINIA.

WEST VIRGINIA, ASSIGNOR T0 GEORGE 8c A CORPORATION OF PAPER-BAG MACHINE.

Specification of Letters Patent.

Patented Feb. 18, 1913.

Application led April 29, 1911. Serial No. 624,182.

To all whom, it may concern Beit known that I, THOMAS J. Sanna-ino, of Wellsburg, Brooke county, West Virginia, have invented a new and useful Paper-Bag Machine, of which the fcllowing is a full, clear, and exact description, reference being had to the accompanylng drawings, forming a part of this specification, in whichn Figure 1 is a plan view of a portion of machine embodying my invention, certain of the parts being broken away or removed; Fig. 2' is a plan view showing the folders; Fig. 3 is a longitudinal section of the machine, with certain parts removed but showing the parts essential to the understanding of the invention; Fig. tis a plan view showing a holding-down shoe; and Fig. 5 is a longitudinal section of Fig. 4.

My invention has relation to machines for forming paper bags, of that type in which the paper stock is irst formed into an openended tube, and is cut into proper lengths, the bottoms of the bags being subsequently formed from one end portion of the tubes.

My invention is especially applicable as an improvement upon the machine known as the Smith-Winchester tuber, whicht is employed for this purpose. The Smith-Winchester machines, however, are adapted to produce a paper tube in which the paper is folded to substantially the same extent from opposite sides to form a central seam, which seam extends through the middle of the back portionof the completed bags.

vto the shoe 9, and which is adjustably se- The presence of this seam at this point is objectionable for a number of reasons. It 1s frequently desired to place printed matter, or a printed design, upon the back of the bag, and the appearance of such printed design is greatly marred by the presence of the seam extending therethrough, and the seam also increases the difficulty of making a good impression. The seam also frequently causes an impress upon the front side of the bag, which mars the printed matter or design printed thereon. My invention is designed to provide a machine of this general character, wit

means whereby instead of folding the paper equally from both sides, the vfold is made substantiallyl all from one side, thereby forming an edge instead of a center seam,

this seam coming at one edge of the completed bags, thereby obviating the obJections :curved shoes ranged side by side, being carried by a l justing means,

above referred to, and also facilitating the` subsequent bottom-forming operations.

In the accompanyingdrawings, the numeral 2 designates the frame of the machine, having at one end suitable. supporting means for t-he roll 3 of paper, from which the tube is formed. This paper is led upwardly over 4 and 5, thence to the guide rollers 6 and 7, adjacent to which the paste of other gumming material is applied by any suitable means (forming no partof my present invention, and which is not shown); and thence forwardly and downwardly underneat-h the rotating cutter 8, which forms the usual cuts in the paper (which provide notches at the mouths of the completed bags for convenience in'opening). The paper then passes forwardly underneath the 9, 10 and 11, which are artransverse shaft 12, and having suitable adsuch as indicated at 13. These shoes guide the paper onto the upper surface of the table 14, the side shoes 9 and 11 being relatively narrow, while the central shoe 10 is much wider, and serves to more effectively hold the paper against buckling in the subsequent folding operations. This shoe-10 can be removed to permit of the use of shoes of different widths to slut different sizes of bags. a corresponding adustment being made of the, side shoes 9 an 11.

15 is an edge guide for thepaper adjacent cured to the frame of the machine as indicated at 16.

17 designates an adjustable folder having a dared mouth, which engages on one side of the sheet along one edge of the paper and folds it over to make the narrow edge fold A. 18 is a similar folder at the opposite side of the table, which engages the same face of the sheet of paper adjacent to the center thereof and which makes the wide fold B, this fold being sufficiently wide to overlap the narrow fold A to which it is pasted or gummed to form the seam.

19 is a finishing folder and presser, which presses the lower inner edge of the fold B onto the fold A. 20 is a folder and guide placed in advance of the folder 18, and which insures the proper completion of the fold B.

and under the guide rollers.

loo

21 is a transversely extending tension and hold-down roller which bears u on the upper surface of the tube after tlib latter has passed the folders 19 and 20, and which is provided with suitable tension screws and springs 22.

23 designates a pair of feed-in rolls; 24

a pair of cut-off rolls, one of which carries the cutter 25; 26 designates a pair of corrugating rolls, and 27 a pair of feed-out rolls.

The roller 21, together with the rollers 26 and 27, are provided with cut-away portions 28, which prevent injury to the finished seam.

In the drawings, I have not shown all of the gearing for actuating the several sets of rolls, since this gearing is essentially the same as in the Smith-Winchester machine above referred to, and which is vwell known in the art. My invention provides machines of this type with improved paper guiding and folding means, which is so located and arranged as to form a side seam instead of a center seam. Heretofore, this has not been considered practicable, owing to difH- culties in handling and in properly folding the paper. My invention overcomes the eX- isting diiiculties, and provides a machine by which a paper tubing with a side seam can be readilv and accurately made.

What I claim is .1. In a machine for forming tubes for use in bag manufacture, a folder arranged to engage one face of the sheet along one edge thereof to form. a 'narrow edge fold, a second folder in advance of the first folder to engage 'one face of the sheet along the opposite edge of said sheet to form a wide fold overlapping the narrow fold, and fixed shoes in back of the first folder arranged to engage the opposite face of the sheet from that engaged by the folders to prevent buckling of the paper; substantially as described. v

2. In a machine of the character described, the combination with folders arranged to form a narrow fold at one edge of the paper sheet, and a wide fold at the opposite edge of the sheet, of paper holding and antibuckling means for engaging the sheet at one side of the longitudinal center thereof as it passes to the folders, comprising relatively narrow edge shoes and a relatively wide intermediate shoe; substantially as. described.

3. In a machine fo-r forming tubes for use in bag manufacture, a folder arranged to engage one edge of the paper sheet to form a narrow edge fold, a second folder in adi vance of the first folder to engage the opposite edge of the sheet and to form a wide fold overlapping the narrow fold, and fixed shoes in back of the first folder arranged to engage the paper at one side of the longitudinal center thereof to permit the other side to be folded over as it slides under the slices in its passage to the folder, said shoes, being arranged to prevent buckling, together with an edge guide adjacent to the fixed shoes engaging the paper in back o-f the firstfolder; substantially as described.

4. In a machine for forming paper tubes for use in bag manufacture, a folder having a flared mouth arranged to engage one face of the sheet along one edge thereof to turn the sheet upon itself to forni a narrow edge fold, a second folder in advance of the first folder having a flared mouth to engage the same face of the sheet along the opposite edge of said sheet to turn the sheet upon itself to form a Wide fold overlapping the narrow fold, and fixed shoes in back of the first fold arranged to engage the sheet on the face opposite t-he face engaged bythe folders to prevent buckling of the paper; substantially as described.

In testimony whereof I have hereunto set my hand.

* T. J. SHER-RARD. Witnesses:

WILLIAM A. WAssoN, M. E. BOWMAN.

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