USRE16944E - thull - Google Patents

Description

April 24, 192s. Re. 16,944

A |.`.1.`THULL BAG SEWING MACHINE.

Original Filed July 17. 1924 3 sheets-Sheet 1 April 24, 192s.

F. J. THULL BAG SEWING MACHINE 5 Sheets-Shet 2 Original Filed July 17. 1924 H lla.: Lim

l 'I x iwi/afg,

April 24, 192s. Re, 16,944

Y F. J. THULL BAG SEWING MACHINE Original Filed July 17. 1924 5 Sheets-Sheet, 5

l gamll'l Reissued Apr. 24, 1928.

f UNITED STATES PATENT OFFICE.

FRANK `J'. THULL, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR T0 UNION`SPECIAL MACHINE COMPANY, F CHICAGO, ILLINOIS, ACORPORATION OF ILLINOIS.

BAG-SEWING israel-HNE.`

Original No. 1,570,100, dated January 19, 1926, Serial No. 726,501, led July 17, 1924. Application for r 'i reissue filed August 28, 1926. Serial No. 132,291.

"lhis invention relates t-o a bag tying or bag closing machine, such as now used in tieni mills Iand other factories where the product isplaced in bags for sale. As is well known to those skilled in the art, the. i lioiir and other similar products are marketed in different sizedl bags. These bags are now commonly filled in a machine and are then transported to the bag closing maor places some closingl means thcreabout.

` lt desirable, :in order to quickly handle the various sized bags which aire ot different heights, to have a machine in which the closing means or the supportingmeans, or both,

`are.vertically adjustable so that said bags*A can be` supported with their tops in properv relation to the closing means.`

lt is an` object ot' this invention, therefore,

, to provide a bag closing machine having a jvertical @uiding colnmn'or frame and a bag supporting i table comprising a conveyor, which table is vertically movable on said column and which is also swingable about a horizontal axis so that it may be swung down `into dcpcnding'and substantially vertical po- 1 sition,

lt is also an object of the invention to pro- .'vide such a machine having a sewing head thereon or `other equivalent bag closing` 1 which .means which is also vertically adjustable on said column and to Aprovide means for driving the said table and i'ts elevator when it is in either its horizontal or vertical position.

`It is ai'urther object of the invention to s provide such a machine ot a portable type which is self-v low vertical Iguide column in which counter- `chain members to the sewing head and table, respectively, and which pass over sprockets at the top of said machine, hand wheels, or

veyor is driven from said shaft and is vercontained and which has a. holon the line 3-3 of Fig., 1; Y wei glits travel which are connected by flexible i table, the driving connection for said convevor vto said shaft moving along said Shaft' s as the table is moved.

It 'isa still further object ofthe invention to provideysuch a machine as set forth int-he preceding paragraph which also has a sewing head or equivalent bag closing means f mounted for verticalmovement on said colchine which sews the top ot the bag together umn, which, likewise, has `a driving connection to'said Vshaft which is movable therealongas said head is moved, together with means for simultaneously throwing vinto or `out of operation both said sewing head and said conveyor on said table.

It is another object of the invention to provide such a bag closing machine comprising a vertical column on which a sewing head or equivalent means is vertically movable and er1-which a table comprising an endless conveyor, is also-vertically movablefwith means `for quickly moving said head or table vertically and holding the same in iixed position.

` These and other objectsand "advantages .of the invention willbelfully set forthin the -tollowing description `made in connection with the' accompanying drawings in whichl like reference charactersrefer to the same parts throughout the' different views, and in Fig. .l is yaviewin sideelevation ofthe machine showing a bag thereon in dot-ted .F ig. 2 is a view in vertical section taken (on the line 2-2 'of Fig. 1 ;v

Fig. v23' is a vlew in verticalsection taken Fig. tis a view in side elevation of aportion of lFig.- 2` showing a clutch operating means;

Fig; 5 is a horizontal section rtaken on the line 5 5 of Fig. 1, as indicated by the arrows; f Y Y Fig. 46 is atop planl view of the machine; Fig. 7 is a partial view jin side elevation showing the table in vertical position in dotted lines, and i Fig. 8 is a vertical section, taken on the line LS---S'ot Fig. 5.

`Referring tothe drawings, the machine comprises a base plate or supporting member l1. This base has journaled therein and exmiV 45` :i feeding Y mechanism `may gcured to the column 4, which member hasa 'forwardly andila-terally projecting arm 6? l,5"-witl1 -albossfthereon 'forming the upper bearing of a driving shaftT,y which vshaft is jourmale'd in spaced fbearingsfin a'bracket '8 `sefeured :to 'thefbase' member 1 Aand upstanding n ftherefrom.` The ybracket 8 vhas vertically zqspac'ed `arms between which and 'its vspaced bearings a puliley- 9 is disposed secured to the shaft-7. AThe-pulley. 9*-'is connected by-a belt l() 4to a ypul'l-ey 11 secured .to the driving shaft f of :a motor-12-mounted onfbase'l and shownv Zfaslof'the I'common Aelectrica-l'type. The belt 1110 rufns'lover'a guiding pulley 1'3 mounted 'in a' suitable bracket secured kto the base 1. A vhead 14I carrying'a bagl closing means is 4-shorvurnand while this I'bag closing means may SHV 2be :ofl any desired? type, in the 'embodiment of lthe'. invention illustrated, the same 1s shown usrrepresenting a sewing head. Said head `is supplied with threads 1.5 running through gmdifngmeans 14 4and,1{l""secured to said =heaid,' the guiding -means 16se'cured to a rod upstanding from a. small llug 6h projecting fiforward vcentrally from topfmember f6, 1 and fag-uid-ing means17 carried by rod 1'8 up- ;staneling from fa `suitable rvspool carrying 1braclnetl) `secured to the lrearof the' column Ilrhe bracketflQ is illustrated `as having two spool carriers 20 thereonl carrying spools of the thread 15. The sewing head 14 and fassociatedl lfpa-rts of its sewing and thread known and standard type and the samespeeilficallyffonn part off'the present inventionv and are merely shown 'diagramrnat-ically. The head'flt is 'bolted to a rear portionor bracket 21=1provided Awith guiding `mean s"littlivngaboutl the fT-shaped guide plate @and is vertically movable along said plate. The edges of the `T-sliaped guides form "spaced-vertical lguides' for the bracketA for the sewingheaid afnd yalso 'fori the bracket for the bag support which will be later described,

Iand these spaced fg'ui'desv `prevent the brackets supported therebyfrom tilting laterally on theguides. The sewingrmechanism of said head is actuated from a pulley'22 Vdriven by a 'suitable belt 23' from `apulley v2tslidable on theshaft 7. Pulley 24 is adapted to be conl'neotedto and-'drivenluy shaft'7 by a clutch member L25 :adapted tobe brought into lcontactwthaI cooperating clutch member 26 lfend to an farm 6b the ffdowirwarclly. from lugv 6b around and beneath which wheel iswadap-ted zto lbe Yposition betweenxan 14xbeauf any -wellf `lwhich rifinef wheel '36 between said -upsta-nding arms. vIftwifll be Aseen that the rod `jiiorting the' bags. iframe bracket 450 'hav-ing a rear horizontal 'plate member 40 vextending parallel lbars 40J car-ryv ".41 and ila adapted. to be engaged toca-use the pulley24 to Ybe driven b vjan operating lever27p1voted to a downwardly extending lug on member .2! and. extending to one side ot the machine where 1t is plvotally connected to an upv standing arm The lever f2.7 .hasla forked icndfsurrounding shaft 7 and disposed beneath the clutch member 26 and said lever also .has an .upwardly extending-arm 27a provie ed Awith vfriction means adapted to con- `V.tact 'the upper side of.v clutch =1nember .25 VAathen sardarmisswung toward saldv member.

lihe Yarm v28'has 'a chain sheave 29l thereon `overwhich passes a clutch operating chain lwhich is adjustably secured Vat its upper projecting outwardly from 'topmemberfd {Thec'hain .31 extends fthe sheave 30, then :upwardly over thesheave 'and f 'downwardly therefrom. A coiled :tensile vspring is secured adjacent one end lfot lever 27 aand: tothe :mem-ber 21 normally holding the lowerl clutch member-26 downwardly with `the clutchdisengaged. A counl:ter#weighted flexible member shown. as a- Chain is securcdto `the 'top of the member .'11"andjfiasscs vertically upward and over a s leave disposed above the Atop member 6 .imouniteidon'a shaft supported 1n an upstand- 'ing "bracket .34 secured to .top member 6,

k'whichchai-n V'thenpasses Vdownwardly from `said Lshearve :and =1s *secured to a counterweightf illustrated as off-the shape of the A'seganeiit .of a cylinder, 4which counter-weight substantially fits inand slides in the column 13 :atfionelside ofwtlhepartition 5.' -A hand V"wheel' is secured to the shaft carrying the sheafve sp-rocketiover which chain V33runs, held in lfixed upstanding .arm on the bracket i37mou-nted in top member 6 kand an arm T38 .upstandinfg from Ia bracket guided for inward and outward movement dn a Ascrew'BS) `.provided `'with :a cross handle rod, screw may be tightened to `clamp the support- 'zingwbrac'ket 34 is adjustably held inbracket 37 by va lsuitable set screw and :bracket 37 is `sin'fiila-rly heldinA a boss or'hub projecting `lupi'vardly from the top member 6.

An important feature of the vpresent invention lis the vverticallymovable'and swinging table having a conveyor thereon for sup- Thistable comprises a and spaced longitudinally :bars Vor plates 40". The bearings at each-end forshafts upon which 'are mounted the belt or conveyor supporting rollers 42. Amovable member comprising an endless conveyor is shown in the form of a belt- 43. `he upper run of the belt or conveyor 43 is supported a suitable deck means 44 extending between the men'ibers 40. Plate 40 has rearwardly projectingl plate-like ears or lugs thereon pivotally mounted on a pin 45"L and between and is urged away from said platev 40a by spaced coiled springs 47, `saidplate `46 `forming a. pawl adapted to engage over the teeth or stop'lugs 48a formed on'the outer side of a pair ot' arms48 which project outwardly from a sliding frame or bracket 40 fitting about the guide plate 4. The `lugs 46a and the plate 46 form av latching means for holding the table in `horizontall position and which is readily releasable to allow the tablev to swing to vertical position. The pin 45a is mounted in bearings in the arms 48 and is driven from a gear 50 of the worm or spiral type slidable on shalt7. which 'gear meshes with another gear 510i' similar type secured to shatt 45. The gear 5() has secured thereto one of a pair of clutch members 52 and 52a, the memberl being splined to the shaft 7. The lgears 5() and 51 are enclosed in a suitable gear housing 53.' which housing has bearings at each side inv which shaft 45 is journaled. `The sha-tt 45 has a beveled gear secured at one end meshing with another beveled lgear 55 secured to the rear end of shaft 4l, said gears being enclosed in a suitable hood or gear housing 55fL which is rotatable on the shaft 45. The shaft 45 is held longitudinally in place by cotter pins extending therethrough adjacent the bearings on arms 4S.

ber by a lever 56 pivoted to an arm upstandmg from the `bracket 49 and extending to one side of: the machine where it has pivot-y ally connected thereto and extending downwardly theretroni,` an arm 57. The lever 56 has a fork at its free ends embracing shaft 7 and bearing on top ot clutch memberfQ. T be arm` 57 has a shea-ve journaled in its lower end and a sheavc 59 is journaled in the bracket 59` secured at one side ot the bracket 49, whichsheave is disposed a. short distance above andy to one side of sheave 58. A spring 60 is secured to the lever v56 and to the bracket 49 andnorm ally holds the lever 56 in position with the clutch members 52 and 52a disengaged. 'The chain 31, already referred to extending downward trom sheave 29 also extends downward around and beneath the shcavc 5S. then upward `inside of the' same and the sheavev59 over the top of the latter and then downwardly and is removably secured at its lower end to an arm 61 projecting laterally from ashaft 62 mounted in Clutch member 52d is adapted to be moved into engagement with clutch membearings on the base The shaft 62 extends forwardly beneath the table 40 and has connected thereto a lever 62a having an upstanding arm. Said arm has a fiat arm 62h projecting outwardly at its upper end adapted lo be contacted by t-he knee or leg of the operator to be operated by hand. A small `hand lever 71 is pivotally mounted at one has a flexible member vshown as a chain 63 secured theretoi which chain passes upwardly in front of the `guide plate 4 and ove).l a sprocket sheave 64 carried on a shaft 65 mounted in a bracket 66`extending upwardly in front of the guide plate 4. A'and over a sprocket sheave 64 carried on a. shaft 65 mounted in a bracket 66 extending upwardly `trom the -top n1cmber6, and saidl shatt- 65 has secured 'thereto a hand wheel 67,by means ot' which the sheave 64 may be turned. It will be noted that the shaft is axially alined withihe shaft on which is mounted the hand wheel 36 andr the inner end of shaft 65 is journaled in the end ot' the hub of the sheavc over which passes the chain 33. rhand wheel 67 is adapted to be clamped between an upstanding arm on a bracket 68 secured by a set screw in a boss upstand'ing 'from the top member 6 and an arm upst-anding 'from a bracket 69 guided for inwardv and outward movement on a screw 70 having a cross rod handle in its outer end.` A't'ter passing over the sheave 64, vchain 63 passes downwardly through top members 6 and .is secured to another counter-weight 7 3 which is also in the form ot a segment of a cylinder and slidable at one side of the partition 5 in column 3. The base member l is provided with a handle or Longue 74,' by means ot which the machine can be piilled and transported to diilerent positions.

l In operation. the tabl@l and sewing head will be adjusted on the guide 4, the bag `closing` machine will generally be used in 'connection with the machines in the mill tillr the bags, the latter generally being called the. packer-s. the packer by conveyors and these conveyors are ot various heights. It is desirable tor etlicient handling to have the travelling table on the bag closing machine at substantially the same height as the conveyor' on. the packer and the height ot the conveyor on the packer will usually d-etern'iine the vheight of The table thus being directly the table 40. l arliii'stfal` vertically by moving the hand `wheel 67 which moves chain 63 which latter' is directly connected to the table. the same will then be held in this position by locking tbe handwheel by means ot the screw 70. The sewing head will now be also directly which y The bags are delivered trom adjusted "vertically turning the hand-v wheel 36, which-moves chain 33, which latteris directly connected to said head, said head being adjusted to suit the height .of the bag being operated upon.

- Lwill then be locked in the proper position by l stantially in vline with weighted they the screw 39. If the bags are not being re-v ceived from a packer or other conveyor, the sewing head may be adjusted to theparticularoperator so that the sewing is done subhis eyes or slightly below-the same, sothat the sewing operation can be easily watched. In this case the table V40 will be adjusted to suit the height of the bag being operated upon. Owing to the fact that 'the' -head 14 and table 40 are countermove up and down very j easily,the counter-weights moving in column 3. The head 14and the table40 being properly positioned,the bag to be sewed will be placed at one end ofthe carrier or conveyor i 43 and theoperator will press laterally on members 25 and 52 move, respectively', into Yan engagement with clutch members 26 and 52. Pulley 24ywill thus beconnected to shaft 7 as will also the gear 5() and the sewing head i will be 4operated and the conveyor 43 driven.

The sack is now held at its top at each edge by the operator and traversed laterally so that it moves through the sewing'head. As soon as the sack is finished the operator relievesthe pressure against arm 62b of lever 62E-and the clutch ymembers are again disengaged and head 14 as well as conveyor 43 ceases to be operated. The sacks can thus be quickly handled and closed.` If the operator desires to run the conveyor 43 continuously he may swing the hand lever 71 downwardly and lever 56 will then be permanently held in position to keep one of the'members 52y and 52t engaged so as lto continuously drive the conveyor 43. This may be desirable when the sacks are Abeing supplied to the end ofthe conveyor in rapid succession. l As above` described, the table 40 can thus bequickly moved vertically and positioned forv different sized bags. ln sewing the largest sizes of bags, the table 40 and the conveyor 43 are not used and during this operation, the pawl plate 46 is disengaged and the table' 40 with its attached parts is allowed to swing downwardly, as indicated Ain dotted lines in Fig. 7.- In this movement, the ears 40c and bearing 40L merely-pivot on the shaft and the' gear housing 54 also swings about said shaft. vVhen the table is thus disposed in its depending ver- The head tical position, the conveyor 43 may still be driven. A great many modern millshave a r:floor beltor conveyor which runs substantially iiush with the ioor adjacent the filling or packing machine on which the bags move. In sewing the larger bags the present machine will be moved in position just in the rear of this floor belt so that the same passes under the sewing head 14, shaft 62'being removed. The large bags can then be traversed through the sewing head while moving on said floor belt audit will be noted that these bags willbeA assisted in their movementby contacting the Vvertically disposed and moving belt so that the top ot'xt-he bag will not drag backV as it comes through the. sewing head.` 'The machine therefore is capable of use with practically all sizes'of sacks or bags now in commercial use. 'Thisfisa great-advantage as it has been .the practiceheretofore to have different machines orsewing different sized bags. The presentmachine can, of course, be used to sew the larger bags without the use of the floor belt, it' desired.v In'using the machine withthe larger bags-the operator may press directly on arm 61 or a suitableA foot pedal (not shown) may be placed thereon. When itis desired again to vplace the table 40 in its normal-horizontal position it is'only necessary to grasp the samel and lift it, when the pawl plate 46 will again spring over stop lugs 4ca and hold thetable in its proper position. A universal,` very simple, and eiii'- cientbag closingjmachine is thus provided. The machine is of such a height that the lli() operator conveniently can reach the hand wheels 36 and 37-which are made of large size so that a direct and quick traverse of the sewing head and table may be had. The

loperator can use both hands to hold the bag and operate the starting and stopping clutch lby the knee lever 62, readily be moved from one 'place to another in the mill or factorv by pulling the same about with its handle 74.

From theabove description it is seen that applicant has provided a` very novel, simple and eiiicient .bag closing machine and yone that will have the purpose intended. v

VVhilefmachines have previously beenv provided for conveying the bags-through a sewing head, the use of such machines has been quite limited7 'owing to thegsmall range of movement of the sewing head and table, and the table has not been capable of being swung downward. The present-machine makes a practically universal machine and one which can be used with all sizes of bags. lt Vwill be noted that the sewing head or table, are both movable throughout practically the whole extent of the vertical guide column and the travelling table can be adj ustedquite closeto'the licor. The table can thus ybe The machine canv a high degree of utility for wheels and locking mechanism.

viously have required a separate sewing ma` chine. The mounting of both the table and the sewing head on the column renders it possible to conveniently counter-weight the same and to provide the vcountear-weighting chains and the convenient `operating hand- The machine is beingcommercially used in some. of the large flour mills in this country and is proving very'successful and efficient. The machine takes the place of several machines ofthe prior art and is used to serve several different packing machines.

` It will, of course, be understood, that various changes may be made in the form, de-v tails, arrangement and-proportions of the partsv `wit-hout departing from the scope of applicants invention, which, generally stated,

consists in a device capable of carrying out.

the objects above set forth, such as shown and described and defined in the appended claims.

What is claimed is l. A bag closing machine having in combination, a frame comprisinga vertical guide column, a. head having a bag closing mechanism thereon, and a' traveling membervertically movable on said `column and disposed below said head, said member being movable to a horizontal and depending vert-ical position. H v i 2. A bag closing ma hine having in combination, a. frame `comprising la vertical guide column, a. head having a bag closing'mechanism thereon, a table vertically movable on said column and comprising a normally horizontal endless traveling carrier, said table being .movable to depending position with said carrier substantially in vertical position, and means for driving said carrier in both positions of said table.

3. A bag closing machine having in combination, afframe comprising a' vertical guide column, a driving shaft, a head having a bag closing mechanism thereon mounted on said column, a table comprising a horizontal endless carrier, said mechanism and carrier being driven' from said shaft, and said table being swingable to bring said carrier into substantially vertical position, said carrier being driven in both posit-ions of said table.

4. A bag closing machine having in combination, a frame comprising a vertical guide column, a driving shaft extending vertically along said column, a sewing head on said column driven from said'shaft, a table vertically movable on said column comprising a horizontally disposed endless carrier driven from said driving shaft, said table being swingable to depending position to bring said carrier into substantially vertical position While continuing thedriving of said carrier.

5. A ba sewing machine having in combination, a a vertical driving shaft extending along said column, a horizontal shaft in front of said column, a gear slidable on said driving shaft, a gcaron said horizontal shaft meshing with said gear, a table pivoted to saidhorizontal shaft comprising an en'dlessmcarrier driven from said horizontal shaft, said table and carrier being movable about said horizontal shaft to depending vertical position.

6. The structure set forth in rclaim 5, a. beveled wear on said horizontal shaft, a driving shaftJ for said carrier at one end thereof, and a beveled gear on said last mentioned shaft meshing with said beveled gear, whereby when said table swings to its depending osition, .said last-mentioned beveled gear will travel about said first mentioned bevel gear. 7. A bag sewing machine having in combination, a frame comprising a vertical column, awhorizontal shaft in front of said column, a. bracket mounted for vertical movement 0n said column, armsprojecting outwardly from said column having stop lugs .thereon in which arms said horizontal shaft is jour`` naled, a. table comprising an endless conveyor havingrearwardly `pro]ect ing lugs pivoted lon said shaft and having a resiliently operated pawlA member adapted to engage said stop lugs and hold said table inrhorizontal position, said paw-l member beingl releasable toper'mi't said table to swingdownward to substantially vertical position.

8. bag sewing machinehaving in combination a column, a vertically movable sewing head thereon, a vertically movable conveyor on saidA column constructed and arranged to be disposed in horizontal or vertical position, revoluble counterweight carriers at the top of said column, counterweights havingylexible4 supporting means movable over said carriers respectively and respectively connectedto said sewing head and conveyor-,means for ,locking said sewing .head indifferent vpositions on'said column, means for locking said conveyor head lon said column, driving mechanism for said' sewing head and conveyor, `andA clutch means for controlling said drivingmechanism.

9. bag closing machine ,comprising` a vertical hollowvguide column, a vertical partition therein, a head carrying bag closing mechanism vertically movableon said lcolumn, a table vertically movable on` said column comprising an endless conveyor, a pair of sprockets at the top ofv said column, counterweights movable in said column at each side of said partition, sprocket chains connectedv respectively to said counterweio'hts extending respectively` over said sprockets and connected, respectively, to said sewing rame comprising a vertical column,

head and able, hand wheels for moving'said sprockets-Sand sprocket chains to move vsaid 'head and table, and means vfor-locking said hand wheels'in fixed position.

10. A self-contained bag closingl machine kcom rising a portable base having'a vertical gui e column rising therefrorlm'a motor mounted on saidbase, a vertical rdriving f shaft mounted alongside of said column and lio driven fromsaid motor.; a head having a bag closing mechanismV thereon on said column, a swinging table vertically movable on said column comprising an endless conveyor, said headcand conveyor being driven from said vertical shaft, counterweights forsaid head and table' movable `in lsaid column, and means for moving said head and table, respectively, and vholding the same infixed position. Y l

11. A bag closing machine having in combination a vertical guide column, a head carrying bag closing mechanism vertically slidable on said column, a table vertically slidablel onv said column and comprising an endless conveyor, a pair of sprockets atth'e top of said column, connterweights for Vsaid `head andrtable respectively, sprocket' chains 'connected respectlvely topsaid counterweights and lextending respectively over 'said' sprock- `ets and connected respectively to said head and table,v hand wheels jfor l y l moving said sprockets, and sprocket chains to move said headrand-table whereby said head and table can quickly be moved vthroughoutsubstan- "tially the whole extent. .of saidcolunin.

12. A bag sewing machine havin in combination, a column, a counter-Weig ted sewing head verticallyV slidable thereon, a* counter' weighted conveyor vertically Slidable thereon, members res ectively connected' to said sewing head and) conveyor: and. tov the counterweights thereof and movable vertically of said column, means for directly and bodily moving said last 'mentioned members to move said sewing head and conveyor along said column, said 'sewin head and conveyor being movable substantially throughout the length of'said column, and means forzfholding rsaid 'sewing head and conveyor in fixed position.' l

'13. A bag closing machine having "in combination, a vertical guide column, a4 head having a bag closing mechanism vertically adjustable on said column, and a table comter' wei ht` cha ing" a base adapted'to reston a supporting surfaceya head havinga bag closing mecha- /nism-thereon vertically movable on said column from the to 'thereof to 'adjacent the vbottom thereofp whereby said sewing head may be Abrought in close proximity to -said supporting surface, a table comprising a traveling conveyor movable on said column/from the bottom thereof to adjacent the top thereof, and means for quickly moving said head'and conveyor'on said column andv holding the same in iixed positions thereon. f

15. A bag closing machine having in combination, a frame comprising' a vert-ical guide column, a head having a bag closing mechanism thereon vertically inovableon said columnl throughout substantially its Whole extent, and a table comprising an endless conveyor also movable on said column throughout substantially its whole extent, said table `being' pivotally mount-ed lso as to swing. downward with said conveyor substantially in vertical position. f

16; A bag sewing machine having in' com` binatiomy a column, a vertically movable sewing headthereon, a vertically movable conveyor on said column, re-voluble counterweight carriers at'the top of said column, counterweights' having flexible supporting means movable Ioversaid carriers respectively' and respectively connected f to said Sewingr headfand conveyor, said carriers beingrevoluble about acommon axis.

` 17. Thev 'structure' set forthin claim 16, f

members revoluble about said axis fory oper- .ating lsaid head and conveyor, and means for'holdingV saidmembers in locked position. 18. A machine for operating on bags comprising a column, a sewino` head on said column, a conveyor normally disposed substantially horizontally for supporting bags andr vertically movable on said column, vsaid conveyor being ypivoted about a substantially horizontal axis adjacent said column yand swingable about .said axis into substantially vertical depending position.

19. A portable bag sewing machine adaptedto be moved adjacent the floor belt of a mill, said machine having in combination a column. a sewing headvertically slidable on saidcolumn, a conveyor for'bags vertically slidable on said columnand swingable out of vertical alignment'with said sewing head 'so that bags progressed on the' floor belt can be sewed by said sewing head, whereby bags of varying sizes may be Asewed by said machine.

`20.`A bag sewing machine comprising a column, a traveling conveyor supported on and vertically movable on said column, and pivoted to swing about a horizontal axis, means for driving said conveyor, a latching means for'normally holding'said conveyor lin horizontal position but being releasable to permit said conveyor to swing ldownwardly tically along said column, a head having a bag closing mechanism thereon slidably mounted n said column, a table comprising a horizontal endless carrier shdably mounted on said column, said mechanism and carrier being driven from said shaft, said table and head being movable substantially throughout the whole length of said. column,

and a motor mounted on said base and operatively connected to the lower end of said shaft. r

22. A portable bag closing machine having in combination, a base, a single vertical guide column upstanding therefrom, a head having a bag closing mechanism thereon ver` tically movable on said column, a table comprising a bag progressing conveyor slidably mounted on said column, said head being movable from the top of said column substantially to the bottom thereof, and said table ludug movable from the bottom of said cohunn substantially `to the top thereof, means carried by said frame for driving said mechanism and conveyor, means for moving said headrand table on said column, and means for loclcing said head and table in various positions.

2?). A bag closing machine comprising a hase, a guide column extending vertically from said base, a head having a bag closing mechanism mounted on said column and adjustable vsubstantially throughout the whole length thereof, a bag supporting and con veyingtable mounted on said column and adjustable substantially throughout the whole length thereof, and means'for synchrfmously operating said. bag closing mechanism and said bag` conveying table, whereby the machine may be adjusted to directly receive and close bags of all standard sizes.

24.. A bag sewing machine comprising a supporting franjie structure adapted to rest on a supporting surface, a sewing head vertically movable on said frame structure from the top thereof to adjacent the bottom thereof, wherel'iy the sewing head may be brought in close proximity to said supporting surface, a support for the filled bag vertically movable on said supporting frame structure from the bottom thereof to adjacent the top thereof, and means for quickly moving said sewing head and bag support on said supporting frame structure and holding the same in fixed positions thereon.

25. A bag sewing `machin`e comprising a supporting frame structure adapted to rest on a supporting surface, a sewing head vertically movable on said frame structure from the top thereof to adjacent the bottom therethe sewing head for stitching across the bag y and closing the same.

26. A bag sewing machine comprising a supporting frame structure including spaced vertical guides, a support for a filled bag mounted for vertical adjustment on said guides, means for adjusting said support, a sewing head mounted for vertical adjustment on said guides and over-hanging the bag support, .means for adjusting said sewing` head, said sewing head and said support being movable substantially throughout the length of said supporting frame so that the i i range of adjustments of said head and said support overlap each other. l

Q7. A bag closing machine comprising a supporting frame structure adapted to rest on a supporting surface, a sewing head mounted for vertical adjustment on said frame structure from the top thereof to adjacent the bottom thereof, a weight con-` nected to said head for counterbalancing the same, a bag support movable on said sup'- porting frame structure from the bottom thereof to adjacent the top thereof, a weight connected to said bag support for counterbalancing the same, said head and support being movable substantially throughout the length `of said frame, and said weights being likewise movable throughout substantially the length of said -frame so that t-he range of adjustments of said head and support, and of the weights, overlap each other.

Q8. A bag fsewing machine comprising a supporting frame structure adapted to rest on a supporting surface, a sewing head vertically movable on said frame structure from the top thereof to adjacentt-he bottom thereof, ldriving shaft extending vertically from the top to the bottom of said frame-structure, means operated from said shaft for actuating said sewing head, a traveling conveyor movable on said supporting frame from thc bottom thereof to adjacent the top thereof, means operated by said shaft for actuating said traveling conveyor, and means for vertically adjusting said sewing head and vertically adjusting said bag support without disturbing the operating lconnections between said vertical shaft and said head and between said shaft and said traveling conveyor.

In. testimony whereof, I atix my signature.

v FRANK J. TH'ULL.

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