US1652417A - Paper-folding machine - Google Patents

Description

Dec. 13, 1927.

G. A. SHAFFER ET AL PAPER FOLDING MACHINE Filed Jan. 7. 1927 3 Sheets-Sheet 1 I N VEN TORS v A TTORNEYS G. A. SHAFFER ET AL PAPER FOLDING MACHINE 3 Sheets-Sheet 2 Dec. 13, 1927.

Filed Jan. '7, 1927 III'HUWHHHWHIIM INVENTORS W 9 O ATTORNEY Dec. 13, 1927. 1,652,417

' G. A. SHAFFER ET AL PAPER FOLDING MACHINE Filed Jan. 7, 19, s Sheets-Sheet 5 A TTORNE Y Patented Dec. 13, 1927.

UNITED' STATES p i,652,41? PATENT OFFICE.

GLENN A. smmrnn AND FRANKLIN H. mm, or GREEN BAY, WISCONSIN, AS-

SIGNORS TO roar HOWARD Mirna COMPANY, or GREEN BAY, wIscoNsIN, A core IPOIRA'JJION OF WISCONSIN.

PAPER-FOLDRJ'G MACHINE.

Application filed. January 7, 1927. Serial No. 159,578.

The invention relates to paper folding machines and has as an object. the provision of a machine adapted to fold paper double and to fold the edges of the thus folded strip upon the center thereof to provide a fourfold strip having the free edges of the double fold lying adjacent the center of the strip and to then cut the strip into len hs and fold the several lengths in the midd e to provide a folded napkin for packaging.

By further action of the machine, the thus folded sheets are fed to a chute from which they may be removed for packaging.

It is a further object of the machine to provide an attachment for a known machine to produce the final fold above referred to.

Further objects will appear from the following description when read in connection with the accompanying drawings showing an illustrative embodiment of the invention wherein: Fig. 1 is a side elevation of "the machine broken away to shorten its length;

Fig. 2 is a vertical transverse section on line 22 of Fig. 1;

Fig. 3 is a detail plan view' of the attachment; and

Figs. 4, 5, and 6 are detail transverse secis shown, the device is applied to a known form of machine for folding paper and in practice the machine really embodies two machines in one having supply rolls for paper to be operated upon shown at 10 and 11. For purposes of illustration but one attachment is shown in'the present drawings. V

In the known form of machine the paper is ledfrom supply roll 10 to a V-shaped folding late 12 which doubles the paper in the wel -known manner and from which plate in the known .machine the paper is led downward between the rolls 13, 14, which rolls crease the thus folded paper which is then led between the cutting rolls 15, 16, which latter roll bears knife 17 adapted to enter recess 18 in the roll 15 whereby the folded paper is cut into lengths, which lengths are ided between rolls 19, 20, and are operate upon by a tucker 21, which is given a reciprocating motion and which tucker strikes the lengths at their center to force the same between ribbons 22, 23 which tions on the corresponding section lines of' carry the finally folded paper downward to be fed to a chute 24 by means of the plunger 25. I i

The mechanism for driving the parts thus described being well known is not illustrated in detail. The result of this known machine is paper folded into quarters.

According to the present invention the strip of doubled paper delivered by the plate 12 is carried to one side about the roller 26 against which the paper is creased by means of roller 27 and is carried about a shoe 28 shown in cross section in Figs. 4 and 5.

The edges of the doubled sheet as shown in Fig. 5 are turned upwardly and are folded over upon the upper portion of the shoe 28 as shown in Fig. 6. The shoe 28 is supported upon a rib 29 from the supporting rod 30 of Fig. 2.

To press the edges of the paper down upon the shoe 28, there are shown rollers 31, 32, carried by stub shafts 33, 34, which'shafts are mounted upon links 35, 36, mounted upon rod 37.

From the shoe 28 the paper is led over the roll 39 thence downwardly and under a roll 40 from which the folded paper passes to the roll 14 between which roll and roll 13 the strip is pressed to crease the folds. The paper is then cut into lengths by the cutting rolls 15, 16, and is again folded in the middle by action of tucker 21 and is then finally fed to the chute 24 from which the paper may be removed in desired quantities for packaging.

For purposes of illustration of the invention the rolls 31, 32 are each shown as formed of a disk 41 having a rabbeted edge at 42 for reception of an annular ring 43 of rubber or the like, said disk mounted on a headed sleeve 45, and a disk 44 having screw threaded engagement with sleeve 45 and re taining the .ring 43 in place. The thus formed rollers are mounted on the headed spur shafts 33, 34 mounted in blocks 46, carried by links 35, 36 and retained between the two members-of each link as by bolts 47;

To support the roll 39 and the rods 30, 37 there are shown arms 48, 49 mounted upon the side members 50, 51 of the machine as by means of blocks 52, 53.

The operation of the device will be clear from the above description.

Minor changes may be made in the physi cal embodiment of the invention Within the scope of the appended claims Without departing from the spirit thereof.

W's claim:

1. A paper folding machine comprising in combination, means for doubling a strip of paper, a shoe, means for leading the central portion of said doubled strip against one side of said shoe, means for pressing the edges of said strip against the opposite surface of said shoe With said edges adjacent the central portion thereof, means for conducting the strip from said shoe to a cutting derice for severing the folded strip into lengths.

2. A paper folding machine comprising in combination, a V plate for doubling a strip of paper, a shoe located laterally of said V plate, means for leading the central portion of said doubled strip against one side of said shod-means for confining the edges of the strip delivered from the V' upon the upper surface of said shoe, means for con ducting the strip from said shoe to a cutting device for severing the folded strip into lengths.

3. A paper folding machine comprising in combination, a V plate for doubling a strip of paper, a shoe located laterally of said plate, means for conducting said strip with its central portion in contact with one side of said shoe, means for confining the edges of said strip against the opposite side of said shoe, means for creasing the thus folded strip and means for severing the folded strip into lengths.

at. A paper folding machine comprising in combination, a V plate for doubling a strip of paper, a shoe located laterally of said plate, means for conducting said strip with its central portion in contact with one side of said shoe, means for confinin the edges of said strip against the opposite side of said shoe, means for creasing the thus folded strip, means for severing the folded strip into lengths and means for again folding said strips transversely of their length.

5. A paper folding machine comprising in combination, a V plate for doubling a sheet of paper, a shoe located laterally of said V plate, means for leading said folded strip in contact with one surface of said shoe, means for confining the edges of said strip against the opposite surface of said shoe.

said edges being adjacent the central portion thereof, means for creasing the thus folded strip, means for cutting the folded and creased strip into lengths and means for delivering said lengths to a chute.

6. 'A paper folding machine comprising in combination. a V plate for doubling a sheet of paper, a shoe located laterally of said V plate, means for leading said folded strip in contact with one surface of said shoe, means for confining the edges of slild strip against the opposite surface of said shoe, said edges being adjacent the central portion thereof, means for creasing the thus folded strip, means for cutting the folded and creased strip into lengths, means for folding said strip transversely thereof adjacent their central portions and means for delivering said lengths to a chute.

7. A paper folding machine comprising in combination, a V plate for doubling a strip of paper, a shoe located laterally of said Vi plate, means for conducting said strip with the central portion in contact with one surface of said shoe, means comprising rollers for pressing the edges of said strip against the opposite surface of said shoe and adjacent the central portion thereof, means for creasing the thus folded strip, means for cutting the strip into lengths and means for feeding said lengths to a chute.

8. A paper folding machine comprising in combination, a V plate for doubling a strip of paper, a shoe located laterally of said V plate, means for conducting said strip with the central portion in contact with one surface of said shoe, means com rising rollers for pressing the edges of said strip against the opposite surface of said shoe and adjacent the central portion thereof, means for creasing the thus folded strip, means for cutting the strip into lengths, means for folding said lengths transversely thereof adjacent their central portion and means for feeding said lengths to a chute.

9. An attachment for folding machines comprising, in combination, a rib, a shoe mounted adjacent its central portion on said rib, a pair of rollers mounted to press the edges of a strip of material against said shoe on each side of said rib while the central portion of said strip is in contact with the opposite surface of said shoe.

10. An attachment for folding machines comprising, in combination, a bar, a rib mounted'on said bar, a shoe mounted ad: jacent its central portion on said rib, a rollor so mounted on said bar at each side of said rib as to press the edges of a strip of material against one side of said shoe at each side of said rib While the central portion of said strip is in contact with the opposite side of said shoe.

11. An attachment for folding machines comprising, in combination, a pair of brackets adapted to be mounted on the frame of the machine. a roller mounted between said brackets adjacent each end thereof, a bar mounted. between said brackets intermediate the ends thereof, a rib mounted on said bar, a shoe carried by its central portion on said rib. a link pivotally mounted on said bar at each side of said rib, a roller revolubly carried by the free end of each of said links in position to press one of the edges of a strip of material against the surface of said shoe at each side'of said rib while said strip is led about said rollers with its central portihon in contact with the opposite side of said s oe.

12. An attachment for folding machines comprising, in combination, a pair of brackets adapted to be mounted on the frame of the machine, a roller mounted between said brackets adjacent each end thereof, a

bar mounted between said brackets intermediate the ends thereof, a rib mounted on said bar, a shoe carried by its central portion on said bar in a plane removed from a plane passing tangent to the effective Bortions' of the clrcumferenoes of said. ro ers' whereby to causea strip to be folded to. press against said shoe, 'ineans to press the edges of a strip carried about said rollersagainst one side of said shoe while its central portion is in contact with the opposite side thereof.

- GLENN A. SHAFFER.

FRANKLIN H. WIRTZ

Images