US1570100A - Bag-sewing machine - Google Patents

Description

Jan. 19` v1926.

` 3 Sheets-Sheet 2 Jan. 19 192s. I 1,570,100

v F. .1, THLJL1.

BAG SEWING MACHINE Fued July 17,1, 1924 s sheets-sheet s Il o , flour mills and other factories where `thel Patented Jan. 19, 1926.

FRANK J'. THULL, 0F MNNEAPOLIS, MINNESOTA.

BAG-SEWING MACHINE.

Application led July 17, 1924. Serial No.. 726,501.

To all whom t may concern.'

Be it known that I, FRANK J. THULL, a citizen of the United States, residing lat Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Bag-Sewing Machines; and I doY hereby declare the following to be a full, clear, and exact description of the invention, such `as will enable others skilled in the art to which it appertains to make and use the same.

This invention Vrelates to a bag tying or bag closing machine, such as now yused in product is placed in bags for sale. As is well known to those skilled in the art, the flour and other similar products are marketed in different sized bags. These bags are now commonly lled vin a machine and are then transported to the bag closing machine which sews the top of the bag together or places some closing means thereabout. It is desirable, in order to quickly handle the various sized bags which are of different heights, to have a machine in which the closing means or the support-ing means, or both, are'vertically adjustable so that said bags can be supported `with their tops in proper relation to the closing means. f

It is an object o-f thisinvention, therefore, to provide a bag closing machine having a I vertical guiding column or frame and a bag supportlng table comprising a g'conveyor,

which table is Vvertically movable on said column and which is also swingable about a horizontal axis so that it may be swung down into Vdepending and substantially vertical position. y l

It is also an object of the invention to provide such a machine having a sewing head thereon or other equivalent bag closing means which is also vertically adjustable on said column and to provide means for driving the said table and its elevator when it is in either its horizontal or vertical position.

It is a further object of the invention to provide such a machine of a portable type which is self-contained and which has a hollow vertical guide column in which counter-weights travel which are connected by flexible chain members to the sewing head and table,respectively, and whichpass over sprockets rat the top of. said machine,

veyor to said shaft moving along said shaft` as the, table is moved.

It is a still further object of the invention to provide ysuch a machine as set forth in the preceding paragraph which also'has a sewing head or equivalent bag closing means mounted for vertical movement on said column, which, likewise, has a driving connection to said shaftwhichis movable therealong as said head is moved, together with means for simultaneously throwing into or out of operation both said sewing headl and said conveyor on said table.

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

These and other objects and advantages of the invention will be fully set forth in the following description made in connection With the accompanying drawings in which like' reference characters refer to the same parts throughout the different views, and in which Fig. l is a view 1n side elevation of the machine showing a bag thereon in dotted lines;

Fig. 2 is a v1ew 1n vertical sect-lon taken on the line 2-2 of Flg. l;

Fig. 3 is a view in vertical section taken on the line l3 3 of Fig. l; 1

Fig. 4 is .a view in side elevation of a portion of Fig. 2 showin g a clutch operating means;

Fig. 5 is a horizontal Section taken on` the.

line 5-5 of Fig. 1J as indicated by the arrows;

Fig. 6 is a top plan view of the machine; Fig. 7 is a partial view in side elevation showing the table in vertical position in dotted lines; and

Fig. 8 a vertical section taken on the line 8&8 of Fig. 5.

Referring to the drawings7 the machine comprises a hase plate or supporting member 1. rllhis base has journaled therein and extending slightly below the same a plurality of supporting wheels or casters 2, one of which is shown at each side of the rear of the base and another of which is disposed centrally of the forward end of the base. A guiding member or column 3 extends vertically from base 1 and has secured to its forward end a "i" -shaped guiding plate The column 3 is hollow, as shown in Figs. 1 and 5 and preferably has a vertical partition 5 extending diametrically forwardly and rearwardly therein. A top member 6 is secured to the column l, which member has a forwarilly and laterally projecting` arm 6 with a boss thereon forming the upper bearing of a driving shaft 7, which shaft is journaled in spaced bearings in a bracket 8 secured to the base member l and upstanding therefrom. The bracket 8 has vertically spaced arms'between which and its spaced bearings a pulley 9 is disposed secured to the shaft 7. The pulley 9 is connected by a belt l0 to a pulley 11 secured to the driving shaft of a motor 12 mounted on base 1 and shown as of the common electrical type. The belt 10 runs over a guiding pulley 12% mounted in a suitable bracket secured to the base 1. A head 14e carrying a bag closing` means is shown, and while this closing means may be ofV any desired type, in the embodiment of the invention illustrated, the same is shown as representii a sewing head. Said head is supplied wi i threads 15 running through guiding means lei and l-tb secured to said head, the guiding means 16 secured to a rod upstanding from a small lug 6b projecting forward centrally from top member 6, and a guiding means 17 carried by rod 18 upstanding from a suitable spool carrying bracke' 19 secured to the rear of the column The bracket l) is illustrated as having two spool carriers 2() thereon carrying spools of the thread 15. The sewing head 14 and associated parts of its sewing and thread feeding mechanism may be of any well known and standard type and the same specifically forms no partof the present invention and are merely shown diagrammatieally. The head let is bolted to avrear portion or bracket 21 provided with guiding means fitting about the T-shaped guide plate t and is vertically movable along said plate. The sewing mechanism of Said head is actuated from a pulley 22 driven by a suitable belt 23 from a pulley 2% slidable on the shaft '7. Pulley 2lis adapted to be connected to and driven by shaft Y by a clutch member adapted to be brought into contact with a co-operating clutch meinber 2G which is slidable on said shaft 7, said clutch members being supported by suitable means projecting laterally from said niember 21, as shown in ll ig. 2. The clutch member 26 is adapted to be engaged to cause the pulley 24 to be driven by an operating lever 27 pivoted to a downwardly extending lug on member 2l and extending to one side of the machine .vhere it is pivotally connected to an upstanding arm 2S. rllhe lever 27 has a forked end surrounding shaft 7 and disposed beneath the clutch member 26 and said lever also has an upwardly eX- tending arm 27 provided with a friction mens adap ed to contact the upper side of clutch member when said arm is swung toward said member. rihe arm 2S has chain shea fe 29 thereon over which passes a clutch operating chain 31 which is adjustahly secured at its upper end to an arm 6b projecting outwardly from the top meinber G. The chain 3,1 extends downwardly from lug 6b arount` and beneath the sheave 30, then upwardly over the sheave 29 and downwardly therefrom. A coiled tensile spring 32 is secured adjacent one end of lever 27 and to the member 21 normally holding the lower clutch member 26 downwardly with the clutch disengaged. A

counter-weighted flexible member shown a chain 83 is secured to the top of the member 21 and passes vertically upward and over a sheave disposed above the top member 6 mounted on a shaft Ysupported in an upstanding bracket Belsecured to top member 6, which chain then pas.4v downwardly from said sheave and is secured to a conntcr-weight 35 illustrated as of theshape of the senjment of a cylinder which counterweight substantially lits in and'slides in the the column 3 at one side of the partition A hand wheel 36 is secured tothe shaft carrying the sheave sprocket over which chain 33 runs, which wheel is adapted to be held in fixed position between van upstanding arm on the bracket 37 mounted in top member 6 and an arm 3S upstanding from a bracket guided for inward and outward movement on a screw 39 provided. with a cross handle rod7 which screw may be tightened to clamp the rim of wheel 36 between said upstanding arms. It will be seen that the rod supporting bracket 34; is adjustably held in bracket 87 by a suitable set screw and bracket 37 is similarly held in a boss or hub projecting upwardly from the top member G.

An important feature of the present in vention is the vertically movable and swinging table having a conveyor thereon for supporting the bags. This table comprises a frame bracket 40 having a rear horizontal plate member 40 and spaced longitudinally extending parallel bars or plates y40". The bars 401 carry bearings at each end for shafts 4l and 4l upon which are mounted the belt or conveyor supporting rollers 42. A movable member' comprising endless conveyor is shown in the form of a belt 43. rlhe upper run of the belt or conveyor 43 is supported byl a suitable deck means 44 extending between the member 40h. Plate 40 has rearwardly projecting plate-like ears or lugs 40C thereon pivotally mounted on a pin 45n and said plate also has a bracket 40d bolted thereto having a hub also pivoted on a shaft 45. A plate 46 has pintles at its ends pivotally mounted in the ears 40" and extending therebetween and is urged away from said plate 40a by spaced coiled springs 47, said plate 46 forming a pawl adapted to engage over the teeth or stop lugs 48a formed on theouter side of apair ofarms 48 which project outwardly from a sliding frame or bracket40 fitting about the guide plate4. Thelugs 48a and the plate 46 form a latching means for holding the table in horizontal position and which is readily releasable to allow the tableto swing to vertical position. The pin 45 is mounted in bearings in the arms 48 and is driven from a gear V50 of the worm or spiralv type slidable on shaft 7, which gear meshes with another gear 5l of similar type secured to shaft 45. rlhe gear 50 hasV secured theretoY one of a parof clutch members 52I and 52a, the member 52a being splined to the shaft 7 The gears 50 and 51 are enclosed in a suitable gear housing- 53, which housing has bearings at each side in which shaft 45 is journaled. The shaft 45 has a beveled gear 54 secured at one vend meshing with Aanother beveled .gear secured to the rear end of shaft 41,

said gearsbeing enclosed in ai suitable hood or gear'housing55L which is rotatable on the shaft v45. The shaft 45 is held longi tudinally in place bycotter pins extending therethrough adjacent the bearings on arms 48. Clutch member 52n is adapted to be moved into engagement with clutch member 52 by a lever 56 pivoted to an arm upstanding from the bracket 49 and extending t0 one side of the machine where it has pivotally connected thereto and extending downwardly therefrom, an arm 57. The lever 56 has a fork at its free ends embracing shaft 7 and bearing on top of clutch member 52. The arm 57 has a sheave 58 journaled in its lower end and a sheave 59 is journaled in the bracket 59a secured at one side of the bracket 49,-which sheave is disposed a short distance above and to one sidel of sheave 58. A spring 60 is secured to the lever56 and tothe bracket 49 and-normally holds the lever 56 in position with the clutch members 52 and 52a disengaged. The chain 3l, already referred to extending downward from` sheave 29 also extends downward around and beneath the sheave 56, then upward inside of the same and the sheave 59 over the top of the latter and then downwardly and is removably secured at its lower end to an arm 6l projecting` laterally from a shaft 62 mounted in bearings'on thc l clutch members 52 and 52a when the handlev 71 is pressed downwardly. The bracket 49 has a flexible member shown as a chain 63 secured thereto, which chain passes upwardly in front of the guide plate 4 and over a sprocket sheave 64 carried on a shaft l65 mounted in a bracket 66 extending upwardly from the top member 6, and said shaft 65 has secured thereto a hand wheel 67, by means of which the sheave 64 may be turned. It will be noted that the shaft 65 is axially alined with the shaft on which is mounted the hand wheel 86 and the inner end of shaft 65 is journaled in the end of the hub of the sheave over which passes the' chain 33. A handywheel 67 is adaptedvto be clamped between an upstanding arm on a bracket 68 secured by a set screw in a boss upstanding from the top member 6 and an arm upstanding from a bracket 69 guided for inward and outward movement on-a screw 7() having a cross rod handle in its outerA end. After passing over the sheave 64, chain 63 passes downwardly through top members 6 `and is secured to another counter' weight 7 3 which is also in the form of a segment of a cylinder and slidable at one side of the partition 5in column 3. The base member l is provided with a 'handle or tongue 74, by means of which the machine can be pulled and transported to different positions.

In operation, the table and Vsewing head will be adjusted on the guide 4, the bag closing machine will generally be used in connection with the machines in the mill which fill the bags, the lattery generally being called the packers'. TheV bags are delivered fromvthe packer byconveyors and these conveyors are of various heights. It is desirable for efficient handling to have the travelling tableon the bag closing machine at substantially the same height as the conveyor on the packerv and the height of the' conveyor on the packer will usually determine the height of the table 40. The table thus being directly adjusted vertically by moving the handwhecl 67 which moves chain 63 which latter is directly connected to the table, the same will then be held in this position by locking the handwheel by means of the screw 70. rhe sewing head will now be also directly adjusted vertically by turning the handwheel 86, which moves chain 33, which latter directly connected to said head, said head being adjusted to suit the height of the bag being operated upon. The head will then be locked in the proper position by the screw 39. the bags are not being received from a pack-cr or other conveyor, the sewing head may be adjusted to the particular operator so that the sewing is done substantially in line with his eyes or slightly below the same, so that the seuing operation can be easily watched. in this case the table 40 will be adjusted to suit the height of the bag being operated upon. @wing to the fact that the head 14 and table 40 are counter-weighted they move up and down very easily, the counter-weights moving in column 3. The head 14 and the table 40 being properly positioned the bag to be sewed will be placed at one end of the carrier or conveyor 43 and the operator will press laterally on the arm 62". This will. swing arm 6l downwardly and pull downwardly on the chain 8l. This tension on the chain, owing to the fact that sheaves 30 and 59 are stationary, will move sheaves 29 downwardly and sheave 58 upwardly. This will move their respective arms 28 and 57 similarly so that the levers 27 and will be swung and clutch members 25 and 52a move, respectively, into engagement with clutch members 26 and 52. Pulley 4 will thus be connected to shaft 7 as will also the gear 50 and the sewing head will be operated and the conveyor 43 driven. The sack` is now held at itstop 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 relieves the pressure against arm 62b of lever 62a and the clutch members are again disengaged and head 14 as well as conveyor 43 ceases to be operated. The sacks can thus be quickly handled and closed. .lf the operator desires to run the conveyor 43 continuously he may swing the hand lever 7l downwardly and lever 56 will then be permanently held in position to keep one of the members 52 and 52a engaged so as to continuously drive the conveyor 43. This may be desirable `when the sacks are being supplied to the end of the conveyor in rapid succession.

is above described, the table 40 can thus be quickly moved vertically and positioned for different sized bags. In sewing the largest sizes of bags, the table 4() 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 in dotted lines in Fig. 7. ln this movement, the ears 40 and bearing 40a merely pivot on the shaft 45 and the gear housing' 54 also swings about sai/l shaft. lll/'hen the table is thus disposed in its depending vertical position, the conveyor 43 may still be driven. A great many modern mills have a floor belt or conveyor which runs substantially flushL with the tloor adjacent the filling or paclo ing machine on which the bags move. ln 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 beng removed.Y

The large bags can then be traversed through the sewing head while moving on said floor belt and it will be noted that these bags will be assisted in their movement by contacting the vertically disposed and moving` belt 43 so that the top of the bag will not drag back as it comes through the sewing head. rlhe machine therefore is capable of use with practically all sizes of sacks or bags now in commercial use. This is a great advantage as it has been the prac tice heretofore to haveV dilierent machines for sewing different sized bags. The present machine can, of course, be used to sew the larger bags without the use of the iioor belt, if desired. In using the machine with the larger bags the operator may press directly on arm 6l or a suitable foot pedal (not shown) may be placed thereon. When it is desired again to place the table 40 in its normal horizontal position it is only necessary to grasp the same and lift it, when the pawl plate 46 will again spring over stop lugs 48GL and hold the table in its proper position. A universal, very simple, and efcient bag closing machine is thus provided.

rlhe machine is of such a height that the 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 operator can use both hands to hold the bag and operate the starting and stopping clutch by the knee lever 62a. The machine can readily be moved from one place to another in the mill or factory by pulling the same about with its handle 74.

From the above description it is seen that applicant has provided a very novel, simple and efficient bag closing machine and one that will have a high degree of utility for the purpose intended.

YWhile machines have previously been provided for conveying the bags through a sewing head, the use of such machines has been quite limited, owing to the small range of movement of the sewing head and table,

4.o l bination, a frame comprising a vertical Y veyors on practically all ofthe packing machines and the sewing head can be moved through a wide range to suit all sizes of bags. As stated, the machine can also be used to sew bags which are moving on a iioor conveyor. Such bags previously have required a separate sewingL machine. The mounting ofboth the table and the sewing head on the column renders it possible to conveniently counter-weight the same and to provide the counter-weighting chains and the convenient operating handwheels and locking mechanism. The machine is being commercially used in some of the large flour mills in this country and is proving very successful and eliicient. The machine takes the place of several machines of the prior art and is used to serve several different packing machines. y

lt will, of course, be understood, that various `changes may be made in the form, details, arrangement and proportions of the parts without departing from the scope of applicants invention, which, generally stated, consists in a device capable of carryino' out the objects above set forth,such as shbwn and described and 'defined in the ap pended claims. s v

- What is claimed is:

l. A bag closing r'machine `having in comguide column, a head having` a bag closing mechanism thereon, vertically movable on said column and disposed below said head, said member being movable to a horizontal and depending vertical position. v

2. A bag closing machine having in combination, a frame comprising a 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, a frame 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 and aL traveling member bring said carrier into' substantially vertical position, said carrier` being driven in bothv positions of said table.

4. A bag closing machine having in combination, a frame comprising a vertical guide column, a driving shaft extending vertically alongksaid 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 froml said driving shaft, said table being swingable to depending position to bring said carrier into substantially vertical position While continuing the driving of said carrier.V 5. A'bag sewing machine having in combination, a frame comprising a vertical column, a vertical driving shaft extending along said column, a horizontal shaft YinV front ,of said column, a gear slidable on said driving shaft, -a gear on saidV horizontal shaft meshing with` said gear, a table'piv. oted to said horizontal shaft comprising an endless carrier driven from said horizontal shaft, said table and carrier being movable about saidhorizontal shaft -to depending vertical position. y

u 6. The structure set forth in claimY 5, a beveled gear on said horizontal shaft, a driving shaft for said carrier at one end thereof, and abeveled gear on said last mentioned shaft meshing ywith said beveled gear, whereby when said table swings to its depending position, said last mentioned beveled gear will travel about said first mentioned beveled gear.

7. A bag sewing machine having in combination, a frame comprising la vertical column, a horizontal shaft* in front of said column, a bracket mounted for lvertical -movement on said column, arms projecting outwardly from said column having stop lugs thereon in which arms said horizontal shaft is ljournaled, a table comprising an endless conveyor having rearwardly projecting lugs pivoted on said shaft and having a resiliently operated pawl member adapted toengage said stop lugs and hold said table in horizontal position, said pawl member being releaseable to permit said table to swing downward to substantially vertical position. i y

8. A bag sewing machine having in combination a column, a vertically movable sewinghead thereon, a vertically movable conveyor on saidcolumn constructed and arranged to be disposed in horizontal or vertical position, revoluble counterweight carriers at the top of said column, counterweights having flexible supporting means movable over said carriers respectively and respectively connected to said sewing head and conveyor, means for locking said sewing head in different positions on said column, means for locking said conveyor head on said column, driving mechanism for said sewing head and conveyor, and clutch means for controlling said driving mechanism.

9. A bag closing machine comprising a vertical hollow guide column, a vertical partition therein, a head carrying bag closing mechanism vertically movable on said coliimn, a table vertically mov-.fable on `said column comprising an endless coinieyor, a pair of sprockets at the top oi said column, counter Vweights vmovable in said columns at each side of said partition, 'sprocket chains connected respectively to said counter weights extending respectively over said sprockets and connected, respectively, to said sewing head and table, hand wheels for moving said sprockets and sprocket chains to move said head and table, and means for locking said hand wheels in lifted position.

10. A. self-contained bag closing machine comprising a portable base having a vertical guide column rising therefrom, a motor mounted on said base, a vertical driving shaft mounted along side of said column and driven from said motor, a headhaving a bag closing` mechanism thereon on said column, a swinging table vertically movable on said column comprising an endless conveyor, said head and conveyor being driven from said vertical shaft, counter Weights for said head and table movable in said column, and means for moving said head and table, respectively, and holding the same in liXed position.

p l1. 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 slidable on 'said column and comprising an endless conveyor, a pair oi sprockets at the top of said column, counterweights for said head and table respectively, sprocket chains respectively to said counterweights and extending respectively over said sprockets and connected respectively to said head and table, hand wheels for moving said sprockets, and sprocket chains to move said head and table whereby said head and table `can quickly be moved throughout substantially the whole extent oi said column.

l2. A bag sewing machine having in combination, a column, a counterweighted sew- 'ing head vertically slidable thereon, a counter-weighted -conveyor vertically slidable thereon, members respectively connected to said sewing head and conveyor and to 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 sewing head and conveyor being movable substantially throughout the length of said column, and means for holding said sewing head and conveyor in iixed position.

13. A bag 'closing machine having in combination, a vertical guide column, a head having a bag closing mechanism vertically adjustable on said column, and a table comprising a traveling conveyor, also vertically adjustable on said column, said column carrying counter-weight chain sprockets, counterweight chains ruiming over said sprockets, and secured, respectively, to said head and table, means for turning said sprockets to traverse said .head and table, and means for locking said last mentioned means in fixed position.

lli, A bag sewing machine having in combination, a single vertical guide column having a base adapted to rest on a supporting surface, a head having a bag closing mechanism thereon vertically movable on said column 'lirom the topl Vthereof to adjacent the bottom thereoic whereby said sewing head may be brought in close proximity to said supporting surface, a :table comprisa 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 and holding the saine in lifted positions thereon.

15. A bag closing machine having in combination, a frame comprising a vertical guide column, a head having a bag closing mechanism thereon vertically movable on said column 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 mounted so as to swing downward with said conveyor substantially in vertical position.

1'6. A bag sewing machine having in combination, a column, a vertically movable sewing head thereon, a vertically movable conveyor on said column, revoluble counterweight carriers at the top of said column, counterweights having flexible supporting means movable over said carriers 'respectively and respectively connected to said "ewing head and conveyor, said carriers being revolu'ble about a common airis.

i7. rlhe structure set forth in claim 16, members revoluble about said axis for operating said head and conveyor, and means for holding said members in locked position.

1 8. A machine for operating on bags comprising a column, a sewing head on said column, a conveyor normally disposed substantially horizontally for supporting bags Vand vertically movable on said column, said conveyor being pivoted about a substantially horizontal axis adjacent said column and swingable about said axis into substantially vertical depending position.

19. A portable bag sewing machine adapted to be moved adjacent the Ylloor belt of a mill, said machine ha fing in coinbination a column, aY sewing head vertically slidable on said column, a conveyor for bags vertically slidable on said column and swingable out oi" vertical alignmentk with said sewing head so that progressed on the floor belt can be sewed by said sewing head, whereby bags of varying sizes may be sewed by saidmachine;

20. A bag sewing machine comprising a column, a traveling conveyor supported on and vertically movable on said vcolumn, and pivoted to swing about a horizontal axis, means for driving said conveyor, a latching means for normally holding said conveyor in horizontal position but being releasable to permit said conveyor to swing downwardly to substantially vertical position while said conveyor is being driven.

V21. A portable bag closing machine having in combination, a frame comprising a base and a vertical guide .column upstanding therefrom, a driving shaft extending vertically along said column, a head having a bag closing mechanism thereon slidably mounted on said column, a table comprising a horizontal endless carrier slidably 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 table being said column, and a motor mounted on said base and operatively connected to the lower end of said shaft.

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 vertically Amovable on said column, a table comprising a bag progressing conveyor slidably mounted on said column, being movable from the top oi' said column substantially to the bottom thereof, and said movable from the bottom of said column substantially to the top thereof,` means carried by said irameior driving said mechanism and conveyor, means for movingy said head and table on said column, and means for locking said head and table in various positions.

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

In testimony whereof I affix my signature.

FRANK J. THULL.

said head

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