US1477198A - Bag-filling machine - Google Patents

Description

Dec. lll 1923'.

BAG FILLING MACHINE Filed Jan. 15. 192s 5 sheets-smet x ,MV f j M De@ 11,1923. Y L47Z198 G.vvAuvvvRu3HT BAG FILLING MACHINE Filed Jan. 15. 192s 5 sheets-sheetzz "GQ WAINWRIGHT BAGVFILLING MACHINE Filed Jan. l5. 1925 5 Sheets-Sheet 5 Dec. 11, 1923. @Anwe- G. VVANWRGHT BAG FILLING MACHINE Filed Jan. -15 1925 5 Sheets-Sheet 4 Dec. 11,1923.

' 1,477,198 G. WAINWRIGHT BAG FIXLLING MACHINE Filed Jan. 15. '1925 5 Sheeislsheet 5 Patented Dec. 11, 1923.

GEORGE WAINWRIGHT, or isos'roiv, mnssacriusn'rrs; i

4:eac-Funnies MACHINE- Application led January 15, 1923. Serial No, 612,598.

T o all whom it may concern.'

Be it `known that I, GEORGE VVAINWRIGHT, a citizen of the United States of America, and resident of Bostoinin the county of 6 Suffolk and State of Massachusetts, liave invented new and useful Improvements in Bag-Filling Machines, of which the followingis a specification.

This invention relates to bag filling niachines and more particularly to machines for handling fiat bags or envelopes into which a measured charge is fed whereupon the bags are closed and sealed, the entire operation being automatic. l5 Objects of the invention are to provide a machine of this character. which will opeiate with speed and precision, which will not destroy abag or become clogged and inoperative if any operation of the machine is missed, toprovide for the feeding of more v'than one measured charge to the same bag,"" and in general to simplify and to improve f prior devices in the interests of more efiicient and satisfactory service. `The invention comprises amovabley support or carrier Which preferably takes the form of a roi table table or disk upon'which. the bags are disposed and held in face or `fiat engagement.

around in one direction and means are V'provided in spaced relation for placing empty bags upon the. support and for ejecting filled bags therefrom, and other means acting on the bags during their cycle of movemoved to inoperative position by the bag placing and ejecting means which may be arranged to advance from the rear ofthe carrier table or disk, suitable openingsbeingv rovided in the carrier; for thispurpose.

he bag placinof'ineans may take the form fast thereon so that the ejection of ay filled bag occurs concomitantly with theplacing.

of an empty bag, the ejection ybeing opera- Y tive 0n forward movement through one `charge of the bagniay'be deposited inthe f Fig. l is a' front elevational view;

The carrier is stepped ment onthe carrier to open, fill, close and of a suction head having the eector memberv opening-n the carrier while the suction head.

on return or reverse movement forcibly removes an empty bag from` a bag magazine adjacent the carrier and disposes it flat against thecarrieiover Pthe adjacent open-y ing, a gripper seizing and retaining the 'bag in place.l v

rllie invention further comprises afunnel mounted on the carrier for sliding movement into the open end of the'bag to facilitate the filling thereof, means beingrpro vided for causing the mouth'of the bag to open as `the funnel movesdfrwardand holding the flap of the bag out of thepath of movement of the" funnel.' *The entire '(0 funnel at onestation' in the' movement of the .Carrier or in installments' at ar plurality of stations. The invention further comprises novelmeans for gumming the bag flap after the withdrawal of the funnel'and for folding the flap to seal the bag. 1

' For the purpose of illustrating the invention one concrete embodiment' thereof is shownin the accompanying drawings, in Wliichz 2 is a side elevational view partly' in section;

Fig. 3 is a detail elevational view of the Genevamovement for stepping around 'the bag carrier;

Fig. 4 .is an enlarged detail sectional View onthe1ine4-4ofFi .1; W

Fig. 5 is a sectiona View on the of Fig. 4

Fig. 6 is an enlarged fragmentary plan view of one of the bag grippers on the carrier; y v

Fig. 7 is a sectional View on the line 7-4-7 of Fig. l; n

Fig. 8 is a sectional vie-w on' the line 8 8 of Figli f f Fig. 9 is aseotional View on the line 9-'9 of Fig. l;

Fig. 10 is 'a sectionalview on the line 10-1() of Fig. 1'; Fig. vl1 is a sectional 11-11 of Fig. 10;

Eig. 12 is a 'sectional View on the lline 12-12 of Fig. 1; Y

Fig. 13 is a sectional view on the linev 1 3-153'of Figl 1;

;Fig.-14.- is a sectional view on the line 14-14o-Fig. 13;. .Af Figs. 15 and'lA arerespectively front and'no line 5---5v view on the line side elevatioal views of the combined suc- 'tion head and ejector;

F ig. 17 is a plan View partly 4in section of the Bagmagazine; Fig. 18 is a sectional view on the lin 18--18 of Figs. 2 and 17 and Fig. 19 is a sectional view on the line 19-19 caf-Fi 2.V

machine for :filling flat bags or envelopes with measured amounts 'of granular material such as seed. The oflling, closing and sealing bags are' eilected whileI the latter are supported ing'f'flat or 'face engagement with a ba supporter or carrier in the Iforni of a lsk'orftable v20 having a fiat or lane front face and-reinforcing ribs 21 at t e rear, Figs. e' and 5; This carrier -20 is mounted for intermittent rotating movement 1n a substantially'verticalplane and is arranged to support aplurality offlat bags X. n the embodiment shown, disk 20 has laces for supporting twelve bags and in at tgelve stations A, B, C, l), E F, G, I, J, K, L, (Fig. 1).- 'rhe tags are placed.A upon the carrier at station A and ejected 'at station 'L by combined placin'gand ejectin'g means later be deypombe 4 y 4 v y cDisk 20 has a plurality of openings 22, of any desired form, rectangular in the 'pres- 1 entiembodiment, with an extension 23 tol ward the axis of the carrier." The empty bags X are applied to the carrier at station screws 28;.extendn through slots 29 in ,-"f brackets- 27.v Each o the rippers is adapted by means of a sti spring 30 toy l press and hold the bottom of the bag against `.zctn'rier'2Q-and each.- gripper has an abutnient block 314 disposed4 wltnin extension 23 of recess 22 to be contacted by 'means on suction head 24 such as, arm32 or by larm 33 on.` ejector' 34 whereby the grippers are .moved to inoperative position. Securedto the carrier 20 areradially `disposed plates or extensions 35 adjacent to and in' alinement with v openings 22, these IE5 extensions carrying spad, radially disposed,y undercut guide plates 36,- Fig. 5, between which .are mounted for sliding movement plates 37A 'having rounded lower en'ds 38 .l station D, Fig. 1) and carrying ,to arcuate p aies 39 forming nnnels having enla'r d outer ends 40 and beveled and re duce inner ends 41, Fig. 4. To produce slidin movement of tunnels 39, plates 37 exten beyond extensions 35 and carry rol The embo iment of the invention chosen`- for the purpose ofillustration comprises a vits`rotated` movement it stops successively normes lers a2 iittingin a cam groove 43 in an` endless vcam plate 44 surrounding carrier 20.

inward movement of tunnels 39 occurs intermediate Stationenbr and B to dispose the funnel'vvithin the open end of the bag as funnel being indicated 'at station D where the bag is omitted and at station E where thehag ispartly cutaway. After the bag islilleha at station F the funnel is withdrawn, wi -ndrawal taking place in the embodiment shown intermediate stations (i and H'to permit the bags thereafter to be closed and sealed.

' Ass'anfing1 a ling upon the carrier 20 at station A, `ig. 1; movement of the carrier one step to stationk, brings the bag Xpbencath a roller 45 resiliently; supported by a spring arm 46, (Figs. 1, 10 and 11) in position to contact the bag approximately midway of its length to press the bag slightly into the opening 22 therebencath in a man,d

ner to cause the mouthy of the bag to open, the flap X being meanwhile held down by a pad 47 resiliently carried by a flat spring 48, (Figs. 1, 10 and-12)( As the funnel,

39. moves inward by reason of the bend in the cam plate .44:,ithe rounded end 38 of the plate carrying funnel 39s slips over the flap" of the bag and into the open mouth of the bag, pad 47 being raised bythe beveled end 41 of the advancing funnel. The len h of pad 47 as shown in Fig. 12 is such t -t the pad slips from one funnel when th@J next succeeding'bag is beneath the bag opener or roller 45. Thus funnels 39 serve as means for producing intermittent movement of pa'd -47 from its operative position.

During the next few stations such as C,

D and E, in the embodiment shown, funnel 39 remains within the open end of lthe bag. At statitns .F and Glcharges of material may be de osited within the funnel to fill the bag. he charge may be depcsitedat vone of the stations or Aat a plurality ofstations as desired. However, to avoid duplication of parts, but one measuring device.

is shown which comprises a hopper 49' beneath which adrum 50 is rotated in timed relation with carrier 20, thedrum having a plurality of measuring chambers 51 (in this instance six in number) having ad# ustable'bottoms 52 to permit the charge to be varied. Drum 50 is arranged .to rotate at twice the s eed of carrier 2O and is timed to deposit a c arge from one of the measur- Y ing drums 51 'into a spout 53 which in' turn delivers the charge into theenlarged end I 4.0 of the. tunnels 39. The enlarged ends vof the tunnels 39 not only prevent the* material from bei spilled but also speed up the .operation o 'thehxnechine by being of" suiiicient capacity tn'holdthe charges whidi can pass into the bag while the carrier is in motion.

Between station G and H the funnels 39 are withdrawn from the bag which is now filled and at station H adhesive such as mucila'ge or glue is applied to the tab X', by a pad 54 carried by a lever arm 55 and arranged for vrecurrent movement toward and from carrier 20. Pad 54 is supplied with adhesive material by -contact during its movement toward the carrier with a roller 56 mountedy on a. frame 57 reciprocable on guide rods 58 by the provision of a piston rod 58a carrying a piston 59 in a cylinder 60, the piston being normally retained in the upper end of the cylinder by spring 61. Any suitable means may be utilized for causing piston 59 to descend against spring 61 at the proper time such as suction produced by an vexhaust pumpf.

not shown.v connected to the cylinder by pipe 62.y As the roller 57 descends between guides 58 it brushes against .roller 63 partly within aV glue box 64 which in turn is supplied with glue by a constantly rotating roller 65 at `least partially immersed in glue. The timing of these parts is such that as roller 56 reaches the limit of its downward movement or begins its upward movement pad 54 wipes against it and transfers the adhesive thus received to the flap X of the bag, the bag being held flat against carriei 20 by flat spring member or presser 66 (Fig. 7

As pad 54 'is withdrawn carrier 20 is stepped around moving the bag from station lH to station I. At the beginning of this movement the flap X of the bag is raised by a plow7 piece 67 which is supported by member 68 attached to the frame of the glue supplying mechanism, (Figs. 13 and 14) presser 66 still continuing yto retain the body of the bag flat against the carrier. Plow 67 guides the' flap of the .ba-g in front ef a hinged plate 69 pivoted at 7l) to a strap iron frame 71, )late 69 being normally retained in upright position, iiidit-ated in dotted outline, by the provision ol' a spring 7'2. An arm 73 secured to frame 71 carries a presser or retaining member 74 which takes the place of presser 66 and is arranged to engage the bag beyond the point covered by the flap when folded over.

When the bag reaches station I hinge plate 69 is actuated by means of a iiexible connection 75 attached to an arm 76 (Fig. 1) to move the plate to the position shown in Fig. 8 to press the flap over aga-inst the bag to close the latter. Pressure upon the sealed Hap of the bag is continued during the next two stations J and K, by a brush n 77 'suitably supported by resilient strips 78 secured to members 79 which are attached to the cam plate 44. By maintaining, preschine, hollow lever 8O serving a's means for connecting the suction head 24 to a source of negative pressure later described. Secured to the upper portion of lever 8O in any suitable manner as by a collar 82 is an angularly disposed member or arm 83 having integral portions forming the ejector 34 and the gripper actuator 33. As indicated in Fig. 16 gripper actuator 33 contacts bag` gripper 25 to move the latter toinoperati-vef positionfbcfore ejector 34 strikes the filled bag to force itbeyond its funnel39 therebelow and int a lsuitable box` or container, not shown. f Thus` Von advancing movement of the combined ejector and suction head a lilled bag is ejected at 'station L and on reverse movement suction head 24 forcibly withdraws an empty bag from a bag magazine or holder 87A at station A and deposits the bag in face engagement with carrier 20, gripper actuator 32 permitting the gripper to move to operative posiY tion in time'to clamp the bottom of the bag against the carrier at the moment the suction is broken in head 24. j

As illustrated in Fig. 2 the bag magazine 87 is supported on the base orframeM of the machine by angular brackets 84 and by a vertical bracket 85 resting upon a horizon#l tal brace 86.' As indicated in Figs. 17 and 18 the magazine is substantially rectangular. in form, tlie'opeii end :thereof adjacent suction flanges or cleats 88.

draw itfrom between retainers 88-:is in'dieated by broken. lines in Fig. 17. Similar retainers or cleats 89v are provided uponthe top of the magazine terminating in spaced relaropes passing over pulleys 96 beingI util lized for this purpose.

The mechanism f or'operating the Various partsof the device intimed'relation will now be described, reference being had to Figs. 2 and 3. 'The shaft 99 'of the carrier l '20 is journaled in a bearing 100 in the upper i 1ct` head 24 being partly closed by retaining The mannerin which j the suction head 24 flexes the bag to with-i portion of the frame M and carries on its rear end the sta-r Wheel 101 of a Geneva movement, the-pin wheel 102 of which is mounted upon a drive shaft 103 journaled in bearings 104 on frame M. Star wheel 101 has pin grooves 105 corresponding in number to the' twelve stations at which the carrier 20 stops during its cycle of movement, the carrier being' rotated-one vstep on each complete revolution of the main shaft 103. Any su'table means such as a belt (not shown) on pulley 103a may serve tto drive nia-in shaft 103. Drum 50.01 the measuring device is driven from the shaft 99 of the carrier by means of chain and sprocket connection 106, the number of teeth on the sprockets being such :is to produce a twoto-one driving ratio. Roller 65 emersed in the gl ue box 04 may be driven from the main' shaft 103 by :i chain and sprocket connection 107 to :i counter shaft 108 which drives the shaft of the roller through beveled gears 109,1F ig. 1. The movementof the com bined ejector and `suction head 21, 34, of the glue applying pad Stand of the flap folder 69 is controlled by :i cam 110 on the main shaft acting on a slide 111 (Figs. 2 and 19) on base through :i roller 112 on the post 113, the roller being maintained in Contact with the face of cani 1l() by the provision of a coil spring 114 secured in any suitable manner to the base andl to u hook` The connections from 11,5 on slide 111. A slide 111 to the above A.mentioned elements controlled thereby comprise a. lever 116 pivoted to al post 11T, Within the base of the mach'ne, the short arm of .the lever .being connected to a rod 118 on slide. 111. The long arm ot' lever 116 is connected to hollow lever 80 carrying the suction head Z-l :ind the ejector 34 by a link 119, the connection ot' the link to lever 80 being by menne of n clamping collar 120,A adjustment-'of which longitudinally of' lever` 80 will vary thel throw of the suction head and ejector. Freni lever "80 extendsan ear 121 to which is p ivot'ed, a link 122 the other end of which is pivoted to the short arm of lever 55 which carries the o-Iue applyingpad 54. Lever 'iis'plvotetl at 123 yto one side of the bag magazine 87 and has an arm 124C projecting toward carrier 20 to which is secure the Y flexible nieniber or rope 7 5 by' which ,the flap folder 69 is actuated. Iflhliswlienrollerv 112 of'slide 111 ridesupi upon the projection'- of cam"110,the 'lower,.arm' of lever 80 is drawxhto the left,'(F-ifg. 3) throwing sucetion head v24 and 3 4 forward and at the same time swinging the long arm of Y r lever' 55 .inwardlyito force glue pad. 54

against the flap o the bag at station H' and pulling downwardly upon connection rto cause flap folder 69Ato'eeal' abagat station I. As roller 112 rides down from the crest of cani 1.10 lever 55 @Winge outwardly away Lemme' from the carrier, normal position and suction head'Qe is drcwl back to apply a bag tothe carrier et station A.' or producing suction in head 2 4 at the proper instant an exhaust pump 126 'is provided actuated by acrank 127 on main shaft '103 through a, link 128 attached to piston rod 129, the connections from the pump to the suction head 24 comprising pipe 130 and c ilegible connection 131, such as a piece of rubber hose pipe, interposed between pipe 130 and the lower end ot' hollow lever 8,0.

The operation ofthe machine as a Whole will be apparent. froml the earlier functional description and the later 'description of the mechanical connections by which the ele? ments perform their respective functions. The flat bags are* disposed with their ap sides in face enga ement with the carrier table or disk 20 an the operations of opening, filling, gluing-and Sealing the bag 'are effected whi e the b are sov Supported. Inasmuch as none of t to fill and close the bag' a lhitter it will be apparent. that failure of any of the operative steps in` treating the bag will not destroythe bag nor prevent. the operation of the machine through clog-A ging or otherwisepinterfering w' tion of its mechanism. ,Iv/claim:

1. In a machine of the character described,

e movable carrier dish, means retaining ba in face engagement with Said disk, and

means'l for opening and filling the bagwhile supported-on Said disk. Y

2. In n machine of the character described, :i movable carrier disk, --meansretaining be in face engagement with, said disk, and means for opening, filling and closing1 the bug while supported onsaid disk.

3. In a machine ofthe/character described, a movable carrier disk, means retaining bags iii face engagement with said disk, and

and sealing thel means for filling, gummin bag while supported on sai disk. l

4. In a machine of thev character described, :i movable bag earriervd'ishmeans retaining bags fiat against'one fficeA of said disk, means advancing said carrier from a bag receiving K stationujol a ba eject-ing station, and meansforl opening, Illing and closing r'the ba While supported on saldi carrier in transit from one stationto the yother. i5. In a' machine of the character scribed, a movable bag carrier disk, means 'retaining bags upon on face of said disk,

means' for intermittently advancing said ciir-A rier rom'a bag receiving lstation to a ba ejectingstation, and means for o ening, fil i ing, gumming andsealing the a while.

lsu' orted on said carrier in transit rom one station to the other.'

0. In a machine ofthecharacter,desribeddw e elements operative lj* ctually grip the .th any por-'- dit a carrier disk, means for advancing a ba into face engagementcjvith saidfdisk,`an means for gripping :rnd holding the bag on the disk. l

7 In a machine of the character described,

a carrier disk, means for advancing a bag into face engagement` with said disk, and means for gripping the bottom of the bag to hold it upon the disk.

i' 8. In a bag lfilling machine a carrier disk having an opening'therein, means disposing a bag in face enga ement with said disk over said opening, an means for retaining the bag in face engagement with the disk.v

9. In a bag lling machine, a movable carrier disk having an opening therein, means arranged to be advanced through said opening to dispose a flat bag in face engagement with said disk, and means for gripping and holding the bag on said disk. 1

l0. Inatbag filling machine, a'. movable1 carrier disk having an opening therein, a bag holder adjacent .said disk, and means ar` ranged to be intermittently advanced through said openings in succession to seize a bag from said holder and deposit it in face ein# gagement with said disk.

11. In a bag filling machine, a movable carrier disk having an opening therein, a bag holder adjacent said disk, a suction head arranged to be intermittently advanced through said openings to seize a bag from. said holder and deposit it in face engagement with said disk, and means yieldingly retaining this bag uponvthe disk.

12. In a bag fillingn'iachine, a movable carrier disk having an openingtherein, a bag holder adjacent said disk, a suction head arranged to be intermittently advanced throughsaid openings to seize a bag from said holder and deposit it in face engagement with said disk, and means yieldingly retaining the bag upon the disk, said means being moved to inoperative position on movement of said head in one direction and restored to operative position to hold the bag on reverse movement of said head.

' 13. In a machine of the character described, a movable carrier disk having an opening therein, a member arranged to be advanced through said opening to dispose a bag in inverted position fiat against said disk over said opening, aiid-a gripper arranged to engage the bag to hold in place upon the disk.

scribed, a movable carrier disk having an advanced through said opening to dispose a bag in inverted position flat against said 05 opening therein, a member arranged to'ber l disk over said opening, a spring pressedvr gripper for retaining the bag inplace u` on the disk, and an extension on said inem er V arranged to open said member is advanced.

gripper When saidl 16. In a bag filling machine a movable cai-v i' rier disk having a plurality of bag gripping' members thereon, means for recurrently disposing a bag in face engagement with said'e disk in position to be gripped vby one of said'V members.

17. In a bag `lling machine a movable carrier adapted to be intermittently ad-Y vanced, a plurality of bag gripping members thereon in spaced relation, and meansY operative during the periods of rest of said carrier for disposing a bag flat against said carrier in position to be gripped said members.

18. In a .bag filling machine 'a circular carrier disk arranged to be intermittently stepped around in one direction, a plurality' of bag gripping members thereon, andv 1' "T means for concomitantly disposing an empty bag in position to be gripped by one of said by one of members and for ejecting a filled bag from*v beneath another of said members.

19. In a bag filling machine a circular f f carrier disk having aplurality of openings therein, a spring `pressed gripper member adjacent each of said openings, and means recurrently advanced through the openings"- ico for moving at least one of said members Vrto f inoperative position.

20. In a bag filling machine a circularr carrier disk having a plurality of openings 2 ,f

therein, a spring-pressed gripper'member adjacent each opening for holding a bagflat 4v against said disk, and means recurrently advanced through adjacent ones of said openings to move the corresponding gripper members to inoperative position.

2l. In a. bag filling machine a circular.; carrier disk having a plurality of openings f there1n,.a. spring pressed gripper member f adjacent, each opening -for holding a bag flat against said disk, and means recurrently,

vini

advanced through adjacent ones of .said` u openings to nieve the corresponding Gripper members to inoperative pos1tion, sai vmeans including an ejector for removing a filled X 'head for disposing an empty bag over the bag from over one opening and a suction adjacent opening in position to be gripped by itscoiresponding member. p

22. In a bag filling machine. a bag carrier upon which bags are adapted to be mounted in taceengagement therewith, and a 'funnel mounted 0n,sajd j carrier for radial movement into the open end of a bag.

m. 1,477,1as

23. In a 'bag illing'm'achine, la bagcarrier upon which 'ba-gs are adapted tobe mounted in face engagement, therewith and a plurality of tunnels slidably mognted on said 4carrier for movement into and out of the bags.

24. In' a bag filling machine, a circular carrier disk, a funnel slidablymounted on said disk, and cam means for moving said funnel rela-tveto said disk.

25. In a bag filling machine, a circular carrier disk, adapted'to be stepped around in one direction, a funnel mounted for radial movement oesaid disk, and means including a cam track forino-ving'said funnel during rotation of said disk.A

26. In a bag Afilling machine, a circular carrier disk, adapted to be stepped around in one direction, means supported on said disk for opening the mouth of a bag, and a funnel on said disk arranged for movement into the open mouth of the bag to facilitate filling the same.

27. In aubag filling machine, a. circular carrier disk, sjapted to be stepped around in one direction, mea-ns supported on said'disk for opening the mouth of a bag, a ltunnel on said disk arranged for movement into the open mouth of the-bag, and means for holding the flap of the bagout of the path ot" movement of said funnel.

28. In a bag lilling machine, carrier having an opening therein, means retaining a bag in face-'engagement with said carrier above said opening, and means engaging the bag to force itv within said opening` thereby. to open the mouth ot the bag tor the insertion of a. llinc spout.

29. In a bag filling machine, a. carrier disk having an opening, means retaining a bag upon said disk above said opening, and a roller arranged to torce the 'bag within said opening sufficiently to open the mouth of the bag.

30. In a bag filling machine, u bag carrier, means for supporting an empty hug in face engagement with said carrier, a funnel slidably mounted on said carrier adjacent the bag, means for opening the mouth of the bag, and means for concomitantly advancing said funnel into the open mouth ot' the bag.

3l.4 In a bag filling n1achine,a bag carrier, means for supporting an empty bag in tace engagement with said carrier, a funnel slidably mounted on said carrier adjacent the bag, means im' opening the mouth of thebag, means for concomitanlly advancing said funnel into the open mouth ol the bag, and means for holding the :fia i of the bag out of the path of movement o said funnel.

32. In a bag iilling machine, a bag car? rier, means for supporting an empty bag in face engagement with said carrier, a funne f slidably mounted on said carriernadjacent'the bag, means for opening the. mtiiith of the tive .position during the subsequent move-v ment of said funnel.

33. In a bag filling machine, a bag carrier,

means for supporting an empty bag in face i engagement with said carrier, means for openin the mouth of the bag',-a-funnel hav for movement' ing a veled end arranged into the open end of the bag, and a resiliently. mounted holder-for retaining the flap of u I the bag down during the initial advance of said tunnel, the beveled end ofthe funnel serving to move said holder vto inoperative position.

34. In a bag filling machine, a movable support for a plurality of bags, means for holding the flaps 'of the bags in succession flat against said support `to permit the insertion of a funnel Within the open mouth of Vthe bag, and means for recurrently moving said means to inoperative position dur ing the movement of said support.

35. In a bag iilling machine, a movable support for a plurality o bags, said sup pggrt. being adapted to be intermittently advanced, a flat holder adjacent the path of movement of said support, said holder being arranged to hold the tiepidi-each ,successive bag Hat against said support topermit the insertion of a funnel within the bag,'and

means for retaining said holder inoperative,

during the advance of said support.

36. In a bag filling machine, a movable' support for a plurality of bags, saidsu x port being adapted to be intermittently vanced, a flap holder adjacent the path" of movement of said support, said holder being arranged to hold the flap of each successive bag flat against said support to permit the insertion of a funnel within the bag, and means movable with said support for retaining said holder inoperative during the advance of said support. A 37. In a bag filling machine, a movable support for a plurality of bags, said support being adapted. to be intermittently advanced, a resiliently mounted flap holder adjacent the path ot movement of said support to hold the flap of each successive bag fiat against said support to permit the insertion of a funnel Within the bag, and means fonretaining said holder inoperative during,r the advance of said support.

3S. In a bag filling machine, a movable support for a plurahty of bags, said sup port being adapted to be intermittently advanced, means for feeding empty bags to a. posltion adjacent "said support, and means for forcibly withdrawing a bag from said feeding means and disposing it fiat against said support.

los

39. In a bag filling machine, a movable support for a plurality of bags, said support being adapted to be intermittently advanced, means for feeding empty bags in inverted position into proximity to the path of movement of said support and means for forcibly withdrawing a bag from said feeding means and disposing it lfiat against said support.

40. In a bag filling machine, a movable support for a plurality of bags, said support being adapted to be intermittently advanced, a holder for empty bags having its open enddisposed adjacent said support, gravity actuated means continually urging the bags toward said open end, and means for forcibly withdrawing the foremost bag from said holder and disposing Iit fiat against said support.

41. In a bag filling machine, a movablesupport for a plurality of bags, said support being adapted to be intermittently advanced, a holder for empty bags having its open end disposed adjacent said support, gravity actuated means continually urging the bags toward said open end, and suction means'operative during the periods of rest of said support for withdrawing a bag from said holder and` depositing it upon said support.

' 42. In a bag filling machine, a movable. support for a plurality of bags, said support being adagted to be intermittently advanced, a holder tn empty bags having its open end dispose adjacent said support, gravity actuated means continually urging the bags toward said open end, and a suction head recurrently advanced during the periods of rest of said support forcibly to Withdraw a bag from said holder and to dispose it flat against said support.

43. In a bag filling machine, a movable support for a plurality of bags, said su port being adapted to be intermittently a vanced, a holder for empty bags having its open end disposed adjacent said support, gravity actuated means continually urging the bags toward said open end, retainers adjacent the open end of said holder to prevent the bags from being forced out by said means, and a suction head iecurrently advanced to forcibly withdraw a bag from said holder and deposit it upon said support.

44. In a bag filling machine, a support having a plane surface and means for retaining a plurality of bags in face engagement with said surface. means for intermittently advancing said support in one diiection, and means for concomitantly removing a. filled bag from said support and placing an empty bag on said support.

s-In a bag machine a circular bag supporthaving a plurality of openings therein, means adjacent cach opening for lretaining a bag thereovcr, and means simultaneously advanced through two of said ,openings Vto remove one bag from said support and to position another bag on said support.

46. In a bag machine a circular bag support having a plurality of openings therein, means adjacent each opening for retain means adjacent each opening for retaining a bag thereover, and a combined ejector an suction head arranged to be recurrently advanced through adjacent ones of said open-y ings to eject a bag on advancing movement and to position a bag on said support on reverse movement.- l

48. In a bag filling disk, means for retaining a plurality of flat bags with their flap sides flat against said disk, means intermittently advanced to apply adhcsive to the iiaps of successive bags, and means for folding the fiaps and holding them against thebags until the adhesive has set.

49. In a bag filling machine, a carrier disk, means for retaining a pluralityof flat bags with their fiap sides fiat against said disk, means intermittently advanced to apply adliesive to the flaps of successive bags, means operated in timed relation with said first means to supply the-latter with adhesive and means for folding the fiaps and holding them against the bags until the adhesive has set. l

50. In a bag filling machine. a carrier disk, means for retaining a plurality of fiat bags with tlileir flap sides flat against said disk, a member intermittently advanced to machine', a carrierf apply adhesive to the fiaps of successive bags, reciprocable means operated in timed relation with said member for sppplying the latter with adhesive, and means for folding the flaps on the bags to seal the latter.

5 1. Ina bag filling machine. a carrier disk adapted to be stepped around in one direction, means for retaining a plurality of flat bags with their fiap sides Hat against said disk, means intermittently advanced to apply adhesive to the iaps of the bags in succession, a stationary plow member for lifting the Haps as said disk is rotated, and intermittently operated means for folding and pressing the fiaps upon their respective bags to seal the same.

5'2. In a filling machine for flat bags. a. carrier disk mounted for movement in a vertical plane, means on said disk for retaining bags in face engagement therewith'. and means operable during a single cycle of mvement of said diskfor filling, gummng and sealing said qbags.

53. In a lling'machine for flat bags, 'a

carrier 4disk'mouriafed' in vertical plane,- g means on sald disk for retaining bags 1 n -of sttions during a single cycle (if movemeng and means at and mtermedmte certain'of said stations for filling, gumming and.sealinff said bags.

Signed Iy me :1t Boston, Massachusetts, this 30th day of December, 1922.

GEORGE WAINWRIGHT.

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