US865779A - Machine for making paper bags. - Google Patents

Description

10.865,779. A PATENTED sEPT.1o,19o7.

. 0.HEssER.

MACHINE FOR MAKING PAPER BAGS.

APPLIUATION FILED s1:1 T 22.1a05.

a sums-SHEET 1.

No. 865,'7'79. PATENTED SEPT. 10, 1907.

` 0. HESSER.

MACHINE POR MAKINGPAPER BAGS. ArPLIoATIoN FILED snPT.z2.19o6.

a SHEETS-SHEET 2. v

PATENTEI) SEPT. l0, 1907.

O. BESSER.

MACHINE POR MAKING PAPER BAGS.

APPLICATION FILED SEPT. 22.1905.

8 SHEETS-SHEET 3.

- No. 865,779; PAPENTPD SPPP.10, 1907.

o. HPssEP. MACHINE P0P MAKING PAPER BAGS.

APPLICATION FILED SEPT. 22. 1905.

B SHEETS-SHEET 4.

PATENTED SEPT. l0, 1907.

o` EESSERl MACHINE PORA MAKING PAPER BAGS.

APPLICATION FILED SEPT. 22,1905.

8 SHBE-TS-SHEET 5.

No. 865,779. PATENTED SEPT. 10, 1907.

0. HBSSER.

vMACHIN'L." FOR MAKING PAPER BAGS. APPLICATION FILED sBPT.2z.19o5.

BSHBETS-SHBET 6.

PATENTED SEPT. 10, 1907.

0. BESSER.

MACHINE FOR MAKING PAPER BAGS.

APPLICATION FILED SEPT. 22, 1905.

8 SHEETS-SHEET 7.

Il M PATENTED SEPT. lO, 1907. 0. BESSER.

MACHINE FOR MAKING PAPER BAGS. APPLIoATIoN FILED sEPT.2z.19o5.

8 SHEETS-SHEET B.

' view of the same.

. UNITED STATES PATENT. OFFICE. Y

OTTO n EssER, OF oANNsTATT, GERMANY.

MACHINE FOR MAKING PAPER BAGS.

To all whom it may concern:

Be it known that I, OTTO Hassan, a citizen of the German Empire', residing at Cannstatt, in the Kingdom of Wrtemberg, Germany, have invented certain new and useful Improvements in Machines for Making Paper Bags, of which the following is a description, reference being had to the accompanying drawing, and lto the letters and figures of reference marked thereon.

This invention relates to paper bag machines, and has for its principal object to properly feed and assemble outer andhlining sheets for the manufacture of lined paper bags.

A further object of the invention is to provide means whereby one of the sheets is supplied with gum or paste at the beginning of .the feeding operation, and

thereby caused to adhere to the gum-applying member, which latter also serves as a sheet-raising and feeding member.

Further objects of the invention are to prevent the feeding of more than a single sheet at each movement of the feeding devices; to properly grip and convey the sheets, and to` properly position the sheets with respect to each other.

With these and other objects in view, the invention consists'in the combination of elements described in the accompanying specification, and referred to in the appended claims. i

ln the accompanying drawings: Figure 1 is an end elevation of a sheet-feeding [machine constructed in accordance with the invention, one of the main shafts being shown in section; Fig. 2 is a sectional elevation of that portion of the mechanism employed for lifting the outer sheets; Fig. 3 is a plan view of the parts s hown in Figs. 1 and 2; Fig. 4 is a detail sectional view, on an (enlarged scale, of the stripper fingers for preventing the feeding of more'than a single sheet; Fig. 5 isa plan Fig. 6 is a vertical sectional view of the complete feeding machine; Fig. 7 is a transverse sectional view of a portion of the same, showing the stop fingers for the outer shaft; Fig. 8 is a plan view of a portion of the table, showing the location of the stop fingers; Fig. 9 is avertical sectional view of aportion of the table, showing the stops for preventing rearward movement of .the outer sheets; Fig. 10 is a plan view of the same; Fig. 11 is a side elevation of that portion of the machine which includes the mechanismv for feeding the inner or lining sheets; Fig. l2 is a vertical sectional' view of a portion of the same; 13'is a plan view of the mechanism shown in Figli' v andv12; Fig. 14 is an elevation, on an enlargedl scale; showing the location of the strippers which act on the front edges of the lining sheets; Fig. 15 is a plan view of the same; Fig. 16 is a vertical section illustrating the. construction 'Specification of Letters Patent.

Application filed September 22, 1905. Serial No. 279,746.

Patented Sept. 10,- 1907.

^ and arrangement ofthe suction lifter, which acts on the rear`edges of the lining sheets; Fig.'17 is a front elevation of the same; Fig.. 18 is a side'elevation of a portion of the lining sheet feeding devices, showing a modified form of sheet retaining finger; Fig. 19 is a vertical sectionall view of the same, on an enlarged scale; Fig. 2() is a vertical section of the lining sheet feeding devices, on an enlarged scale; Figs. 2l and 22 are similar views, illustrating different stages of the operation; Fig. 23 is an elevation, showing the lifting and conveying mechanism for the lining sheets; Fig.

'24 is a plan viw of the conveying mechanism shown in Fig. 23; Fig. 25 illustrates on an enlarged scale, the construction of the sheet grippers of the conveying mechanism; Fig. 26 is a front elevation of the same;l

Fig. 27 is a front elevation of the movable stop and clamp for holding both sheets on the table; Fig. 28 is 'a plan view of a portion of the same; Fig. 29 is a vertical section on an enlarged scale, of the table and the stop and clamp devices; Fig. 30 is a plan view showing theconveyer and guides for the outer or main sheet; Fig. 31 is an elevation of the clamping ngers for holding the edges of the outer sheet immediately after they are raised from the pile; Fig. 32 is a similar view, on an enlarged scale, of one of the clamping fingers; Fig. 33 is a plan view of the complete feeding mechanism; and Fig. 34 shows the assembled sheets in plan, side and edge view.

Similar numerals of reference are employed to indicate corresponding parts throughout the several figures ofthe drawings. I

The main frame comprises two sections, of which the lower section l is provided with bearings forv the support of the main cam shafts, while the upper section 2 supports the various working parts of the machine.

. At one end' ofthe machine is arranged a support for the vouter sheets 3, and at one side is a support for the lining sheets 62, and the function of the machine is to raise and deliver one of the outer sheets, supplying the Eupper surface thereof with an adhesive, and then to place one of the lining sheetson top of such outer sheets, after which the united sheets are moved to the folding mechanism. The pile of sheets 3 is arranged on a suitable support, which receives a short step by step upward movement to compensate for the removal of suc- Projecting upwardly from the framel 2 is a vertical frame 1. The carri actuates a rod 22, that is connected to one arm of a lever 24, fulcrumed on a pin 23 on frame 2. and the opposite arm of thelever is connected by a link to the carriage 19.

The carriage 19 is provided with a forwardly extending horizontal arm 17, on which a slidably mounted carriage 6 is supported, and to one face of said carriage is secured a vertically grooved block 6, which receives a slide block 16, and in the block fits a pin 16, that projects from the lower end of a rocker arm 15, secured to a rock shaft 14.

The shaft 14 is mounted in suitable bearings in the frame 2, and carries at one end a rocker arm 13, that is connected by a helical tension spring 18, to a fixed point on the frame. The rocker arm 13 is connected by a link 12 to one arm of a lever 1J, that is fulcrumed on a stud 9, carried by a frame bracket 10, and the opposite arm of said lever is actuated by a cam that is mounted bn a transversely disposed shaft 8, supported in bearings in the lower frame 1, and connected to shaft 34 by miter gears. It is clear that rocking movement imparted to the shaft 14v will traverse the pin 16 in the slotted bar` 6, and effect reciprocatory movement of the carriage 6 on its supporting arm 17. A

The carriage 6 has a depending arm 5, to which is secured a gum-applyingand sheet-lifting stop 4, the latter being traversed over the gumming roller 7, and then descending into engagement with and raising the top sheet from the pile 3. The extent of downward movement is limited by a stop rod 26, that isadjustably secured to a bracket projecting-from the vertically movable carriage 19.

As successive sheets are removed fromdhe pile, it is necessary to raise the support of the latter and for `this purpose the support is provided with a rack 29, engaged by a gear 28 on a shaft 29". On this shaft is secured a ratchet wheel 27, thatis engaged by a pawl 27, operated by a bell crank lever 27h, and a rod 27 from the lever 24.

Thestrip 4 presses with some force on the u'ppermost sheet, and when-raised carries the sheet with it. ln many cases'one or two sheets will cling to the one being raised, and will move upward with it, and to prevent the'delivery of more than a single sheet at each operation, a plurality of stripper fingers 30 are employed,

these being adjustably secured to the upper portion of the guide box or strips, and serving to engage with the edges of all thesheets raised and prevent the passage of all except the sheetwhich is clinging to the gnmming l strip 4.

The forward, gummed edge of the sheet is raised slightly above the lower surface of the plate 2, and while the sheet isheld in this position, its opposite side edges are engaged by clamping fingers 32, that are pivoted on pins 33 at the'rear edge of plate 2, and are `clamped against the lower face of said plate.

The clamping fingers 32 are moved to open or release position by cams c, c, on shafts 34, 35, which transmits motion to the fingersthrough rods 36 and said rods are engaged by clamp-closing springs 36,, extending between collars on the rods, and the fixed frame 1, as shown in Fig.l 31.

At apoint in advance of the plate 2is a table 38, in

` the upper surface 'of which are Vformed dove-tailed grooves yfor the reception of two parallel bars 31, the

outer'ends of which carry a sheet feeding plate 39 (Fig. 30) that moves under the elevated front edge of the sheet raised by the gumming strip4, until the feeding lingers 40 at the rear edge of the plate are slightly beyond the rear edge of the sheet, the latter resting thereon in readiness to be transferred to the table 38. -The bars 3l also carry a pair of feed fingers 110 (Fig. 30) which, at a second movement, transfer the sheets from Athe table 38 to other conveying mechanism by which the sheets are fed to the folding devices.

The bars 31 have pendent brackets 319', which are connected by a link 44 to one arm of a bell crank lever 43 that is pivoted on a stud 42, projecting from frame 2 (Fig. 6). The opposite arm of the bell cranklever is connected to a rod 41, whichreceives motion from al cam d on the shaft 8. In order to stop the movement of the sheet at the proper point on table 38, two stop fingers 45 are employed. These fingers are carried by arms 46, that project from a yoke-like carrying bar 48, the downturned ends of which are pivoted on pins 47, projecting from the opposite sides of the 'table 38 (Figs. 7 and 8). To one endA of bar '48 is secured a rocker arm 50, that is connected to one end of a rod 49, receiving mo'tion from a cam e on the shaft 8. During the return o f the bars 3l and plate 39 for another sheet, there is some tendency to carry back the previously fed sheet. To prevent this, a pair of stops 109 are'arranged to move through openings or recesses in the table 38, and engage the rear edge of the sheet. 'lhese stopsy are carried by arms 127, supported by a cross bar 128. The bar 128 is mounted on pivoted arms 131 (Figs. 6, 9 and 10)'and said arms or one of them, is or are operated by a cam o on shaft 8, through the medium of a rod 129. As the sheet moves forward on the plate 39, its opposite edges are engaged by fixed guides 51 and 51, which guide the sheet laterally to proper position. One edge of the sheet is also clamped to the table 38 by the mechanism shown in Figs. 27, 28 and 29, but as this operates also on the lining sheet, its construction and op eration will be described hereinafter.

The pile of inner or lining sheets 62 is mounted on a suitable support, which is also provided with lmeans for raising it gradually as the sheets are removed. This support is at one side o f the machine, immediately under two pneumatic lifting devices 53 and `72, which are arranged to engage near the opposite edges of the successively uppermost sheets.

The primary or initial lifting member for the lining sheet is in the form of a tube 53, shown in the present instance as of segmental form in cross section, and pro- `vided with openings'in one of its flat faces. This tube has circular end portions that are mounted in bearing blocks 55, movable vertically in guideways formed at the opposite sides of.a frame 52. The bearing blocks also carry a bar 116, that is parallel with the tube, and disposed slightly in advance of the latter. This bar carries spaced bars or plates 115, curved to partly encircle the tube, and provided with a number of stripper plates or fingers 115, that are arranged in an arcuate series, and serve, as the tube revolves, to engage and remove all sheets, except the top one, so that if a number of sheets cling together and move upward with vthe tube, all 4save the top sheet will be forced down onto the pile. A

` One end of the tube is closed, and is engaged by a to the perforated side of the tube.

sisme pump 61, that is operated by a cam g, on the shaft 34,

the cam being properly timedto actuate the pump and exhaust the air from the tube, so that `the uppermost sheet will cling to that side of the tube in which the perforations 53 are formed.

In brackets 65 on frame 52 are bearings for the reception of a shaft 57. At one end of the shaft is pivoted a lever 58, the lower end of which is connected by a link 59 to an arm projecting from the end of the tube 53. This lever is connected to the upper end ofa rod 56, the lower end of which is actuated by a cam f, on the shaft 34, the tube being rocked through an arc of 90, or between the two positions shown in Figs. 20 and 21.

To the opposite endsof the rock shaft 57 are secured arms 69 and 70, carrying links 71, to which the ends of the tube 52 and the bearings are/hung. The arm 69 is connected-by a rod 68 to a suitable cam on shaft 34, which effects vertical movement of the suctionlifting tube ,between the positions shown in Figs. 2l and 22.

The operation of this mechanism as thus far described, is as follows: With the tube 52 in the position shown in Fig. 20, the air is4 exhausted by pump 6l, so that the uppermost of the pile of sheets 62 will cling The mbe is then turned, by operating Aarm 58, tothe position shown in Fig. 21. This operation will usually result` in raising the edges of two or more sheets, and as these sheets pass the strippers 115', they are separated from the topmost sheet and fall toward the pile, the movement being rendered certain by one or more retaining fingers 63, carried by a rock shaft 64, adapted to bearings in the brackets 65. This shaft carries at one end a rocker arm, which receives motion from a cam h on shaft 34, through the medium of a rod 66. The rock shaft 57 is then turned, and the tube'52, and its bearings 55 are raised by links 71, tothe position shown in Fig. 22. The opposite or front edge ofthe sheet is operated upon bysuctionlifting heads 72, that arejcarried by a'tube 73. Each of these heads has its lower face inclined from the-sides toward the center'to form a contact surface of reduced area, while the openings in the heads are on that side nearest the edge of the sheet, sothat the edge willV be turned up slightly, as shown in Fig. The tube 73 issupported -by an arm projecting from a vertically slidable carriage 84, that is guided on a vertical arm 85, carried by the frame (Figs. l1 and 121 To the upper end of the carriage is connected a link 83, hung from one arm of a lever 82, that is fulcrumed on a pin 81, carried by the frame. The opposite arm of this lever is connected by a rodl 80, to a bell crank lever 79,' fulcrurned on a stud 78, and the bell crank lever receives motion from a cam yl on shaft 8,I

As the suction heads 72 rise, they carry with them the l outer edge of the upper sheet, and in many casesone or two other sheets will also be raised. In order to prevent the delivery of more than a single sheet, the side bars of the paper guide are provided with stripper fingers 76, which engage with the edges of all of the raised sheets and separate those clinging to the topmost sheet. The raising of the front edge of the sheet is accomplished as the rear edge is elevated by the suction lift tube 52, so that the sheet is moved up to the position shown in Fig. 22 in readiness to be conveyed to a position over the outer sheet previously placed' on the table Ata point to one side of the table 38 is a bracket 91, having a horizontally grooved guide 90, in which is mounted a slidable bar 89, disposed in a horizontal plane slightly above the plane ofthe table 38, and carrying plate 39. This bar 89 is connected by a link 94 to one arm of a lever 93, that is pivoted on a stud 92. The lower arm of the lever is connected to a rod 133, extending transversely of the frame, and operated by a cam m on the shaft 34.

At the front end of bar 89 is secured a plate 124, which is projectedto a position underthe edge of the raised ards 87, in which are journaled/'two shafts 88 and 122 (Figs. 25 and 26). The shaft 88 carries a torsion spring 118, and the shaft 122 carries a similar spring 121.v One end of each spring is connected to one of the standards 87, and tends to turn the shaftto which it is connected.

The shaft 88 carries two gripper fingers 86 and 86, which moves from the full line position of Figs. 25 and 26 to the dotted line position of Fig. 25, to clamp the edge of the raised sheet against the upper surface of the conveyer plate 124. The shaft 88 also carries a shouldered locking disk 119, which is engagedby a lockingpawl 123,v on shaft 122, the pawl holding the shaft with the grippers in theA open position shown in Fig. 25, against-the stress of spring 118. The outer end of the pawl is in the path of 'downward movement of the tube 73, and as the latter descends from the position shown in Figs. 22 and 25, to lay the edge of the`raised sheet on the plate 124 the pawl will be tripped, the disk released, and the grippers will movedown upon the edge of the sheet of paper. The bar 89 is then moved t0 carry the sheet over the outer sheet previously placed in position, but in order to prevent the sliding of sheet 62 on the gummed upper face of sheet 3, a pair of inclined lifting lugs 95 are employed to hold the sheet slightly elevated. When the conveying device nears the limit of its movement, a pin 126 on the gripper 86, engages a Xedstop125 on the table 38, and the grip pers are turned to release position, the shouldered disk 119 being also turned, and being automatically engaged by the pawl 123 so that the grippers are locked in ropen position in readiness for the next forward movement. It will be observed onl reference to Fig. 22that should a second sheet be raised with the tbp sheet,it

isheet, as shown in Fig. 22.v The plate 124 carries standlll() this, and at .the same time to hold the sheets in adjusted position during the return of the carrying plate 39', a clamping mechanism o the type shown in Figs. 6, 27, 28 and 29 is employed.

At one side of the table 38 is a vertical standard 97, in.

frame, and is connected to the upper arm ofl a rod 101,

the lower end of which is connected to one armof a bell crank lever 100, fulcrumed on astud- 99, projecting from aA bracket on frame' 1. Thefopposite arm ofL the bell crank lever is actuated from a cam n on shaft 8,'I

through the medium of aconnecting rod 98.

The clamp.- 96 is elevated during the movement off one of the'outer sheets onto the table 38, andas soon as the sheet stops, the clamp descends and holds it in. place, the front .face of the clamp then forming astop for limiting the movement of the lining sheet transversely ofthe table. guide-for a lining sheet clamp- 106; having curved fingers at its lower end to guide `the sheet downward, This clamp 106' is provided with a horizontally elongated slotwhich also receives the pin"104, to permit the travel of` the pin in its arcuateupath. The construction is such that while clamp 96 may descend to hold the outer sheet, clampg106 may be kept elevated until the lining sheet is fed, and thenv allowed to move down to clamp said lining sheet, and 4hold. the same during the return movement of the plate 39.

ln Figs. 18 and 19 is illustrated a modification of the sheet-retaining finger 63. In this-construction, one or more tubes 112 are carried by a hollow shaft 114, one end of which'is connectedby a flexible tube 132 to the air pump 61, a suitable cock 113 being interposed in the connection.' The shaft may be rocked to allow\ the tubes to act as retaining fingers, and at the same time jets of air may be directed through' the'tubes to separate accidentally raised sheets from the sheetclinging to the suction lift tube 52.

Briefly described, the operation ofl the machine is as follows: The uppermost sheet of the pile 3, is engaged by the gummi'ng strip 4, and the sheet adheres to and is elevated by the strip as the latter moves up, while any lower sheets which may cling to the topmost will be engaged and removed by the strippers 30. When. the sheet engages the lower face of the plate 2,

itsopposite edges near the gummed surface are caughtand held by the fingers 32, while the strip 4 continues its upward movement and leaves the sheet. The plate 39 carried by bars 31 then moves under the sheet and as it returns, carries the sheet over table 38 until the forward edge of the sheet engages the stops 45, the sheet being guided laterally by the strips 51 and.51, after which the clamp 96 descends and holds in it place. In the meantime, the outer edge of one ofthe sheets 62.has been turned up by the suction lift tube 52, 'any adhering lower sheets being removed by the strippers 115, and then retained by the `fingers 63. The tube 52 then carries the sheet upward a short dis-- greater distance, by the suction heads 72. The sheet is The bracket= 97 also serves `as a.

, table.

saam

raised above the plate 124, and as the tube 73 moves down the `edge of the sheet drops on the plate, and the tube engages and trips the pawl 123, anddisk 119, whereupon the grippers 86 and 86 descend and clamp the sheet against the plate. As the plate and grippers move back the sheet is carried over the lugs 95, and held above the gummed sheet 3 previously placed on the table 38. The clamp 96 acts as a stop for limiting movement of the sheet 6 2, and then clamp 106 descends to hold the sheet in place. The stops 109 then move up to engage the edges of the sheets, after which plate 39 returns forla second sheet. As the plate 39 and bars 31- again move forward, the fingers 110 on bars 31 engage the two sheets and feed them to a suitable conveying mechanism, such for instance as the rollers 111.

Having thus described my invention, what I claim as new and desire to secure by Letters.Patent, is:-

1. In a paper feeding machine, the combination with means for supporting a pile of sheets of paper, of a gum reservoir, a gum-applying strip, means for moving said strip between the reservoir and the successive uppermost sheets of the pile to successively raise-said sheets, and a vclamping means for engaging and holding the sheets near the gummed edge before the completion of the upward movement of said strip.

2. In a paper feeding machine, the combination with means for supporting a pile of sheets of paper, of a gum reservoir, a gum-applying strip, means for moving the same between the reservoir and the successive uppermost sheets of the pile, a plate against which the sheets engage during their upward movement, clamping lingers for forcing the sheet against -the plate in advance of the completion of the upward movement ofthe strip,and means for operating said clamping fingers.

3. In a paper feeding device, the combination with means for supporting a pile of sheets of paper, of a gum reservoir, a gum-applylng member, a horizontally movable carriage supporting said member, means for reciprocating said carriage, a'vertcally movable carriage having an arm by which the horizontally movable carriage is guided, means for moving the vertically movable carriagefand means for engaging and holding the sheets of paper in ad- Vance of the completion of the upward movement of the strip. Y

4r In a paper feeder, gum applying member for engaging and raising the successive uppermost sheets of a pile,

tion of the upward movement of the gum applying member -to permit the separation of the latterl from the sheetA after the latter is fully raised, a conveyer plate movable under the partly raised sheets, and means for operating said conveyer plate. 4

5. In a paper feedingv machine, means-for supporting a pile of sheets of paper, a table having stops against which the sheets are to be'fed, a conveyer plate, bars carrying the plate and slidable in grooves formed in the upper portion of the table, means for actuating said plate and bars,

movable between the reservoir and the successive uppermost sheets of a pile, and means for clamping and holding the raised sheets in position to permit the separation of the gum applying member from the sheets and the passage of a conveyer plate beneath them.

6.1'1n a paper feeding machine, aY table, means for supporting a pile of outer sheets and a pile of lining sheets, means for applying gum to the outer sheets, and for feeding the sheets successively to a position on the table, means for raising and conveying the successively uppermost lining sheets to a position over the previously placed outer sheets, and independent and successively operable means for holding said sheets in adjusted position n the l. In a paper feeding machine, means for supporting a pile of outer sheets` and a pile of lining sheets, means for applying gum to the successively uppermost outer sheets, and for raisingand conveying the same to position on the `a gum reservoir, a gum-applying and sheet-raising member table, a clamping member for holding the sheet in position on the table, means for raising and conveying` the successively uppermost lining sheets to a position over lthe outer sheet and against said clamp, the latter serving as a guide for positioning the lining sheet.

A8. In a paper feeding machine, a table, means for gum' 10 movement of said outer` sheets, and inclined blocks over which the sheets are fed, said blocks serving as lifters to hold the lining sheets elevated until in position with respect to said outer sheets.

In testimony whereof I ax my signature, in presence of two witnesses.

OTTO HESSER.

Witnesses WALTER ScHWAEnscn, WILLY HEINRICH.

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