US853918A - Paper-bag machine. - Google Patents

Description

No. 853,918. PATENTED MAY 14, 1907. W. H. CLINE. PAPER BAG MACHINE.

APPLICATION FILED JAN.17, i907.

2 SHBBTS-SHEET l.

No. 853.918. PATENTED MAY 14, l907. W. H. CLINE.

PAPER BAG MACHINE.

APPLICATION FILED JAHJ'I. 1907.

'UNITED sTATns WATSON n. oiiiN'nnoF CLEVELAND, OHIO.

PAPER-BAG MACHINE.

Specification of Letters Patent.

Patented May 14, 1907.

Application filed January 17.1907. Serial No. 352,682.

To nel]- wltom, it may concern.'

Be it known that I, W`ATsoN H. CLINE, a citizen of the Unitedl States, and a resident of Cleveland, county of Cuyahoga, State of Ohio, have invented certain new and useful Improvements in Paper-Bag Machines, of which I hereby declare the following to be a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same. i

The invention relates to machinery for making paper bags and has especial reference to automatically acting mechanism for constructing a satchel end on what is known to the trade as a valve bag, and the machine is adapted to construct the satchel end upon bothL extremities of a bag tube, which may in addition to its use to forni a double ended bag be made long enough to cut transversely in two, in the middle and thus form two bags, each provided with a satchel bottom, but open at the top, thus doubling the capacity and efficiency of the machine.

. The machine is designed to automatically form the Satchel or valve end, by first opening the free ends of the tube, spreading the free edges and forming corners therein, flattening and gluing the spread parts and inserting the cloth valve lining, and finally folding to a complete shape while the bag tube is in continuous motion therethrough each action being performed in its turn and relatively timed relatively to the prior and succeeding movements.

The several operations required to form the satchel or valve extremities upon the bag tube are alike for each end and are simultaneously carried on while the tube passes throughl the machine, hence a description of the mechanism required to form the Satchel and valve at one end of the tube will answer for a description of the mechanism required to form the satchel .and valve at the other end thereof.

he bagtube after being cut to the re quired length to form a double 'ended bag tube is fed by hand or by means of any suitable feeding device to the machine, and at each end is received between a pair of endless aprons or bands from which the'ends project so that they can be acted upon by the Satchel and valve forming devices without checking the movement of the bag tube.

Each Satchel or valve end is formed upon the tube as follows: The tube after entering down.

between the endlessV bands, passes over a plate running the whole length of the machine, and the end is opened by means of suction obtained by air drawn through openings in the inclined walls of suction boxes, one being above and one below the tube, this suction draws apart the sides of the bag mouth and permits of the spreading of the side edges of the mouth by folding one edge back upon a second'thinplate underneath which the bag moves, and which extends for some distance at the inner side of the machine. plished by means of a reciprocating and spreading arm which has the action of the human hand and forearm and rst pushes the inner edge of the bag backward over the plate and then by a spreading movement following the direction of movement of the tube in the machine folds the two sides flatly In the meantime angular formers are inserted into the corners of the bag mouth at either end thereof, and perfect the shape thereof and are immediately withdrawn as the spreading and folding movement is accomplished. The bag end is then carried underneath side guiding plates which hold the edges down until the folds are flattened by means of a roller until they will keep their sha e, and are in condition for subsequent fol ing and gluing, and. forthe attachment of a strip of cloth, to form the valvel if the valve bag is desired. The bag end is then passed under sul table devices for feeding and attaching the strip of cloth, for creasing the spread edges on the lines of the final folds, for final gluing and finally passes through devices for folding the spread sides over each other, on the creased lines, and a set of rollers finish the flattening and cause the perfect adhesion of the parts by administering pressure thereto.

In this device all movements are obtained automatically from a central source of power and the various parts are manipulated by ico means of various cam devices whereby the successive movements can be accurately timed.

A leading and important feature of the invention lies in the capacity of the machine to 1o 5 turn out perfect work in large quantities and also in its adjustability to enable it to manufacture several sizes of bags, and to manufacture a doubled number of bags having only one valve or Satchel end, for each bag. This 1 xo This spreading movement is accomadjustability to provide double ended bags of varying length or to provide bag tubes of double length which can be centrally cut in two, to form two bags from each bag tube, is obtained by separating or drawing together the separate sets of mechanism which ferm the duplicate ends on the tube and stand in reversed position, and the supporting frames therefor are .independent and movable relatively toward and from each other.

The invention is further described hereinafter, illustrated. in the accompanying drawings and specifically pointed out in the claims'. v

In the accompanying drawings, Figure 1 is a side elevation of the device showing the suction boxes, the gearing for adjusting the width of machine, the arrangement of the drawing gearsv7 cam movements and endless conveyers, and bag forming devices: Fig. 2 is a plan view thereof showing the bag forming devices, pressure rolls, gluing rolls, cloth attaching roller, creasing roller and folding devices, with the accompanying actuating gears therefor and gearing for adjusting the width of the machine to accommodate increased or diminished length of bag tubes; Fig. 3 is a plan view of spreader arm and actuating crank.v Fig. 4 is a longitudinal section thereof, showing' actuating gear,` Fig. 5 is a plan view of one of the triangular blades which form the. end pockets of the bag mouth and rock arm therefor; Fig. 6 is a side view of the same., showing operating cam and link connection therefor@ Figs. 7 and S are plan and side elevation respectiveljr of one of the suction boxes; Fig. 9 is a transverse section thereof; Fig. 10 is a bottom view thereof; Fig. 11 is a plan view of the glue pot and gluing rollers by means of which glue is applied to the spread edges of the bag tube; Figs. 12 and 13 are resp'-\.ctivei3T end view and bottom view of the glue applying roller; Fig. 14 is a plan view and Fig. 15 is a transverse section of glue applying device for fastening the cloth strip; Fig. 16 is a plan view of the cloth storing and applying device; Fig. 17 is an end view of the same, and Fig. 18 is a bottom view thereof; Fig. 19 is a plan vie w of the folding plates for turning inward the spread sides of the bag tube, and Fig. 2O is an edge view thereof; Fig. 21 is a perspective view of one end of the bag tube showing the edges separated prior to spreading them; Fig. 22 is a similar view showing the end of the tube spread and flattened and the position of the spreading arm and plate7 it also shows the positions of the angular blades which form the corner pockets at the ends of the bag tube opening; Fig. 23 shows the spread mouth of the bag and the position of the glue to which the strip of cloth is attached; Fig. 24 shows the same with the cloth valve lining attached, and Fig. 25 shows the completed end.

In these views 1, 1 are pairs of endless bands passing over pulleys 2, 2, pivoted at each end of the machine on horizontal shafts 3, 3. rlhese shafts may be driven in any suitable manner, and each pair of bands make contact with each other during nearly half of their length and travel together through the length of the machine.

As shown supportingdrums or pulleys 4 are set in the frames 5 at regular intervals and are driven by means of bevel gears 5 and 6, upon through shafts 7, at the sides of the machine. Each frame 5 is separate from the other andA the frames are relativelyT adjustable toward and from each other by means of transverse screws S and connecting shaft S and gears 9 and 10.

Upon each side frame is laid the longitudinal plate 11 upon which the bag tubes travel.

To the frames are secured the pairs of suction boxes 12 arranged adjacent to the feeding ends of the bands, one above each bag tube and one below it, as illustrated in Figs. 7, 8, 9 and 10 and having the opposing faces made with perforations 13. These boxes connect with an exhaust tube 14, through which the air is drawn from the boxes and through the apertures 13, thus causing the sides of the bag tube to separate as thepp between the boxes as shown at Fig. 21.

l5 is the spreading plate which is provided with the arm 16 having therein a slot 17 inl which is placed the fixed pin 1S, and a crank pin 19 passing through the arm in conjunction with the pin 18 gives the arm a reciprocating and swinging movement exactly rcsembling the movement of the human arm and hand when spreading out a sheet of paper on a table. This spreading plate engages the raised edge e of the bag tube and forces it back over a thin plate 20, so as to spread the edges of the opening. Themechanism for operating the crank pin is clearly shown in Figs. 3 and 4 and comprises gears 20 and 20-2.

Almost simultaneouslyT with the movement of the spreader, the triangular plates 2l enter the corners c of the ends of the bag mouth and pushing outward from the center in both directions give a perfect and symmetrical form to these ends of the opening. These triangular forming plates are mounted on rock arms 22 which are operated by means of links 23 and cams 24 which are rotated by means of gears 25, from a common gear 26. Rock arms 27 support and direct the movements of the lower ends of the links. This position of the spreader and forming plates is illustrated in Fig. 22. These triangular plates are withdrawn as soon as the spreader plate has accomplished its purpose and retired from the bag. The bag tubes are then drawn underneath the side guide plates 2S and held down flat as the spreaded end passes underneath the fiattening roller 29. Thence IOO IOS

the tubes pass underneath the glue pot 3Q and glue applying arm 31, which imprints a short strip of gluel g upon one corner as shown in Fig. 24 to secure the cloth which lines the valve. This cloth is then applied as shown at 32, Fig. 24, by means of a cloth feeding device shown in Figs. 16, 17 and 1S, where 33 is a drum or roller which incloses a roll of cloth 34. This cloth is drawn through the slot 35 by means of rollers 36, actuated by gears 37 and star whe'el 38, which is engaged by pins 39 upon the outside of the drum and stationary upon the fixed axle 40, thus unrolling the exact length of cloth required at each complete revolution of the drum.

Cutler knives 41 and 42 adapted to register once in every revolution cut ofi the cloth and the air passing through apertures 43 leading through the wall of the drum into an exhaust chamber 44, and to an exhaust pipe 45, serves to suck up and hold the cloth upon the drum until it comes into contact with the glue on the bag tube.

To the flattened tube the glue (by means ci' which the free ends are finally secured) is applied by means of the glue pot 46 and. roller 47, provided with the impression flange 48, and this flange is made longer or shorter.

according to the requirement of the bag whether the satchel end is to be provided with an open valve or not.

Il' no valve is required the cloth and cloth applying device are both dispensed with.

60 is a creasing roll.

rlhe next action of the machine is to bend the sides of the flattened end upon the creased lines by means of the upwardly curved edges 49 and 50 of the plate on which the tube travels, one side being turned over before the other, and the glued side last. The end is then completed by running it between pressure rollers 51 which flatten and secure the parts together.

The various operating parts are designed to operate in perfect harmony of succession of movements and relative timing thereof to provide continuous movement of tube and of the parts acting thereon.

Many modifications of detail mechanism and connecting parts may be provided to accomplish the various purposes of' the machine without in the least departing from the spirit of the invention.

Having described the invention what I claim as new and desire to secure by Letters Patent is 1. In an automatic bag machine, organized to construct a satchel end upon each extremity of a paper bag tube, the combination of, duplicate sets of conveying devices arranged side by side, Jfor engaging the tube in two places, duplicate devices for opening the ends of the tube, duplicate spreading and flattening devices for the free sides of the end openings, of the tube, duplicate sets Jfor Jforming devices for-the corners of said openings, and duplicate flattening gluing and folding device, for completing said satchel ends, a common source of power operatively connected with the movements of said sets of mechanism, a support for each set of conveying devices, 'and each set of satchel end forming mechanism, and means for laterally moving said supports to and from each other whereby the length of the bag tube to be operated upon can be increased or diminished, substantially as described.

2. In an automatic machine organized to form two satchel ends upon a bag tube, the combination of duplicate sets of instrumentalities for conveying the bag tube, for separating, spreading 'and forming the edges of the open ends of the tube, and for flattening, gluing and folding and pressing the said ends to form the satchel ends supports for said duplicate sets of instrumentalities, and means Jfor increasing or diminishing the distance between said supports, to permit of varying the length of the bag tube, substantially as described.

'3. In an automatic machine organized to form two satchel ends upon a bag tube, the combination of duplicate sets of tube conveying devices, and satchel end forming devices, arranged parallel to each other, supports for said duplicate sets of devices, guides upon which one of said su ports slides and means for adjusting the re ative distance between said supports to permit of varying the length of the tube, substantially as described.

4. ln an automatic machine organized to construct duplicate satchel ends upon a bag tube, the combination of duplicate sets of conveying devices and duplicate sets of satchel end forming devices, a common source of power for b oth sets of devices, means for manipulating each device employed informing said satchel ends, whereby said satchel ends are formed in a continuous manner when passing over the conveying devices, said manipulating means being operatively connected with said common source of power, a support for each of said duplicate set of conveying devices and satchel end forming devices, said supports being adjustable relatively to each other, and adjusting means therefor, substantially as described.

5. In an automatic machine for putting duplicate satchel ends upon a valve bag tube, the combination of duplicate sets of conveying devices, duplicate sets of separating, spreading and forming devices for the ends of` the bag tube, duplicate sets of pressure rolls, gluing devices, cloth valve attaching devices, folding devices and pressing devices, a common source of power for said sets of devices, and manipulating means therefor operatively connected with said common source of power, each of said sets of devices being adjustable to and from its du- IOC plate over which said side is folded back-' ward, and a plate upon which the end of said tube travels, substantially as set forth.

7 In an automatic machine for putting Satchel end upon a bag tube, endless conveying bands between which said tube travels, the end of said bag projecting therefrom,

suction devices at the feeding end of saidbands, whereby the' sides of the tube are separated, a plate upon which the end of the tube is supported, a second plate above said end of the tube, a spreader arm adapted to engage one side of said tube mouth and to fold it back upon said second plate, said arm having a combined reciprocating and swinging movement, triangular forming plates adapted to enter the corners of the bag mouth and shape the same while the spreader is acting and means for automatically operating the said spreader arm and forming plates conjointly with the movements of the conveyors, substantially as described.

8. In a machine for the purpose set forth, the combination with endless conveyors between which a bag tube travels, the end of said tube projecting therefrom, of suction devices adapted to separate the free sides of the mouth of said tube to open the same, a piv oted spreader arm having a combined reciprocating and swinging movement, and adapted to bend back one side of said. mouth as it moves between said conveyers, an operating crank and shaft therefor, a plate extending the length of the machine on which the rojecting end of the tube lies, an upper p ate over which the bent side of the tube mouth is folded, rock arms provided with angular plates adapted to enter the corners of'said tube mouth and shape the same while said spreader is acting, cam mechanism adapted to operate said rock arm, a flattening roller for the spread tube mouth, a main source of power, and geared connections between said source of power, said cam mechanism, said crank shaft, and said endless conveyors, substantially as described,

9. In a spreading device for the purpose set forth, a slotted arm provided with a spreader plate at one end, a crank, a crank pin pivoted in said arm intermediate of said slot and plate, a fixed pivot pin adapted to enter said slot, and means for rotating said crank, substantially as described. A

10. In a combined spreading and forming device, for the open end of a bag tube, in combination, upper and lower plates be* tween which the end of tube has longitudinal movement, a bed plate, a slotted arm having a terminal spreader plate thereon, a fixed pin in the bed plateentering the slot in said arm, a crank pin in said arm intermediate between said slot and plate, a crank and crank shaft therefor, forming plates adapted to enter the corners of said tube while the spreader is in operation and shape them to a triangular form, a rock arm for each forming plate, cam operated mechanism for operating said rock arms, a common source of power and geared connections between said common source of power and said crank, and cam mechanism, substantially as described.

In testimony whereof I hereunto set my hand this 29 day of December 1906.

WVM. M. MONROE, C. 1I. OLDs.

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