US1158042A - Paper bag. - Google Patents

Description

H. A. GENEST.

PAPER BAG.

APPLICATION FILED SEPT. 16. l9l4.

Tia/I @5- Patented Oct. 26, 1915..

- chine; that more paper tit HOMER A. ennns'r, or rmnrroiw, CONNECTICUT, ASSId-NOIR. 'ro ARRELL & SMITHS, or

CAnnJonARIE, NEW YORK, A CORPORATION OF NEW YORK.

PAPER BAG.

Specification of Letters Patent.

Patented @ct. 26, 1915.

Application filed September 16, 1914 Serial No. 862,094..

To all whom it may concern Be it known that I, HOMER A. GENEST, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented a new and usefullmprovement in Paper Bags, of which the following is a specification.

This invention relates to the construction of paper bags and sacks, and while it may be advantageously employed in theproduction of bags of all sizes and weights of stock, it has special utility in connection with the manufacture of bags of the larger sizes and bags which are made of thick paper stock.

The object of the invention is to so'shape the blanks that they will be manipulated with greater certainty in the forming mawill be saved; and that the bottoms can be more easily and securely pasted, thus insuring tighter and more reliable bags, than those previously made from blanks of the common shape. This object is attained by cutting notches in the bottom edge of one of the sides of the blank in such positions that the feed fingers of the bag machine will only grip one ply, leaving the other ply free to spring up and facilitate the entrance between the plies of a folding blade, which notches are also located so that when the bottom of the bag is folded and pasted, the spaces formed by the notches will be between the thickened and creasedportion along the middle of the side flaps and the side edges of the outer flap, and, therefore, as there will be less thickness of paper at these localities the outer flap can be pasted down with greater ease and certainty, and thus produce a cheaper and more reliable bag.

Figure 1 of the accompanying drawings shows a plan of a sheet of paper out to such size and so creased that it is ready to' be folded into a tube, paste being indicated as appliedalong one edge. Fig. 2 is a plan of the tube made by such a sheet over onto the other section. Fig. 3 is an end view of the tube previous to having its edges united. Fig. 4 shows the tube with the bottom end slitted and creased. Fig. 5 shows the tube with its bottomend diamond-folded and with paste applied to the flaps. Fig. 6 shows the blank with the 1nner flap folded over and pasted t5 onto the side flaps. 7 shows theblank folding one section of with the outer flap folded over and pasted,

as when the bag is complete.

The sheet of stock from which the tubular blank is formed has a front section 1 and a back section 2 separated by the crease 3, and a lap section 4: that is separated from the section 2 by the crease 5. The section 1, at the top desirably, has a thumb notch 6', and at the bottom has two notches 7. Paste is applied to the back of the lap section 4 and this sectionis folded on the crease 5 over onto the section 2 and the section 1 is folded on crease 3 over onto the section 2 and its edge caused to adhere to the pasted surface of the section 4, thus forming the tube. 'Both sections or plies of the tube are slitted, as at 8, for a short distance up from the bottom, these slits passing through the notches 7, as seen in Fig. 4. The lower endof the front section 1 is folded up on the crease 9 and the side flaps 10 are folded into form the common diamond-fold at the bottom end of the tubular bag blank, as seen in Fig. 5. The diamond is creased on the a lines 11 and 12 and after paste is applied to the bottom, as indicated by 13 on Fig. 5, the inner flap 14 is folded over on the crease 11 as shown in Fig. 6, and then outer flap 15 is folded overand pressed down so as to complete the forming of the bottom, as illustrated by Fig. 7.

Cutting out the notches 7 saves paper and the removal of these sections of the front operation being made more certain, as a result'of the forming of the notches 7, fewer blanks are likely to be damaged in the ma.- chine, and consequently there is less waste in manufacture. Furthermore with the notches 7 so cut that when j the bottom of the bag is folded the bottom edges 17 of the notches do not reach as far as the middle crease line 9,-the thickness of the portion of the bottom of the bag at the points 16, where the notches are, is not as much as it would be'if the stock had not thus been cut away. Conse quently these sections will not be bunched as thickly as in the bags heretofore made, and, therefore, the pasting may be more certainly and securelyaccomplished, for it is lit if}, I 1,158,042

. well known that bunched up thicknesses of heavy paper overlappingeachother do not adhere securely when pasted together; This feature is a decided advantage as it notonly facilitates the manipulation of the blanks in the machine and saves waste, but also increases the reliability of the bottom pasting.

The invention claimed. is 1. A bag blank comprising a sheet of paper having a front section, a backsection, and a lap section, the front section having two notches in its lower edge, each notch being located at a distance from the edge of the tube and the lap section having a coating of adhesive along its length- 2. A tubular paper bag blank having two i notches cut in the lower edge of one of the plies, each notch being located at a distance from the edge of the tube.

3. A tubular paper bag blank having two notches cut in the lower edge of one of the plies, each notch being locatedat a distance from the edge of the tube, and slits out.

in both plies through said notches.

4. A paper bag having-a folded and pasted bottom, said bottom consisting of side-flaps formed by diamond. folding the blank, an

inner flap with itscorners cut away and -folded down upon the side flaps, and an outer flap folded over upon the side flaps and the edge of the inner flap.

5. A paper bag having afolded and pasted bottom, said bottom consisting of angular side flaps formed by diamond folding the blank, an inner flap folded upon the side flaps, said inner flap having its corners cut back of the middle line of the side flaps and having a central portion that extends beyond the middle line of the side flaps, and an outer flap folded upon the side flaps, and having its edge extending upon the edge of the inner flap and covering the cut-away sections of the same.

6. A- bag blank comprising a sheet. of paper-having a front section, a back section, and a pasted lap section, one section having two notches in its lower edge, each notch being located at a distance from the edge of the tube.

HOMER A. GENEST.

Witnesses:

SIDNEY S. GROTTA, WILLIAM H. HONISS.

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