US1628268A

US1628268A - Filling machine

Info

Publication number: US1628268A
Authority: US
Publication date: 1927-05-10
Anticipated expiration: 1944-05-10

Description

May 1o., 1921.

L. D. NELSON FILLING MACHINE Filed Nov. 29. 1924 6 Sheets-Sheet 1 May l() 1927. 1,628,268

L. D. NELSON FILLING MACHINE vFiled Nov-29. 1924 e sheets-sheet 2 l o D I7 @D "l l ]I- 70 O 45 Il 65 w e1 7l i5@ o May l0 1927.

1,628,268 L. D. NELSON FILLING MACHINE Filed Nov.29. 1924 e sheets-sheet s /NVENTOR Lema DJVelaon,

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A TTORNEXS 26 1927. Y 1 628,268 May lo L D. NELSON FILLING MACHINE Filed Nov/.29. 1924k e sheets-sheet' 4- NVENTOR Leu/6 A/eLSo/L 1,62 68 AMay 10 1927. L D. NELSON 8,2

FILLING Incarne Filed mamas.y 1924 .e` lSmets-shim?. 5

lai/MMR Ley@ Q. ffelgon May l0 1927. 1,628,268

l.. D. NELSON FILLING MACHINE Filed N0V29. 1924 6 Sheets-Sheet 6 1N VEA/rok LewLfs D. /Vlon A TTORNE V8 Patented May IG, 1927.

UNITED STATES PATENT OFFICE.

LEWIS D. NELSON, OF COLDWATER, MICHIGAN, ASSIGNOR OF ONE-HALF TO ROBERT M. NEALE. OF UNION CITY, MICHIGAN.

FILLING MACHINE.

Application tiled November 29, 1924.

This invention relates to improvements in filling machines.

My improvements :ire especially designed liv incfor fillingr bags with cement, liine :ind other hcavv materials,':ind I have illustrated the same :is embodied in a filling machine for handling cement.

My improvements are, however, readily adapted and desirable for use in numerous io other relations.

'.lhe main objects of this invention are:

`First to provide an improved bag fillingmachine which is automatic in its operation :ind is controlled by the weight of the filled bags.

Second, to provide an improved bag filling machine which may be easily operated, it only beinr required that the operator shall place the lbags upon the filling spouts.

Third, to provide an improved filling machine for cement, lime and other heavy materials, which is not likely to become clogged.

Objects pertaining to details and economics of construction and operation of my invention will definitely appeal' from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure embodying the features of my invention is clearly illustratedin the-accompanying drawing forming a part of this application, in whic Fi". I isa fragmentary front elevation of a filling machine embodying the features of my invention, the upper portion of the hopper andthe lower portion of the 'supporting frame and scale platform being broken away. 'llie machine illustrated is a duplex machine, or one having two filling and weighing mechanisms.

Fig. lI is afragn'icntnry front perspective View.

Fig. Ill isa fragmentary view, mainly in section, on a line coi-responding to line 3 3 of Fig. I. i

lfig. IV is a fragmentary view partially in horizontal section on a line corresponding to the broken line l--i of Fig. III showing details of thi.- fecd means.

1"' f. f is zi fragmentary view partially in section to corrcsljiond with Fig. III with :hr cjcclor rali-iin closed position, it being shown in open position iii Fig. III.

ll (l Serial No. 752,887.

Fig. VI is a fragmentary front elevation showing details of the control mechanism.

Fig. VII is :i fragmentary front elevation showing fui-ther details of the control mechanisni.

F ig. VII I is :i fragmentary view partially in section on a line corresponding to. line 8-8 of Fig. III showing details of the discharge mechanism for the filled bags.

Fig. IX is a detail section on a line corresponding to line 9 9 of Fig. VIII.

Fig. X is a plan view of the scale beam.

Fig. XI is a detail front elevation of the scale platform Fig'XII is a fragmentary view partially in section showing details of the feed valve controlling means.

Fig. XIII is a detail view partially in section of 'a modified form of ejector in which a filling mechanism is provided at each'sideof the ejector.

Fig. XIV is a fragmentary section showing the relation of the spout and the bag holder.

In the drawing the sectional views are' taken` looking in the direction of the little arrows at the ends of the section lines and. similar numeralsof reference indicate similar parts throughout the several views. 'i i Referring to the drawing, I provide "a main supportinP frame 1 of suitable character t'o support tie hopper 2 and-theoperating 'mechanismsf The stru'cture'shown in' Fig. I 'is a double unit machinejvith the units arranged side by side, btas: the units are duplicates a description Vof one' will be sufficient.

The material is supplied to the hopper 2 by any suitable means.'A z

At the bottom of the hopper is a horizontally disposed ejector cylinder 3 having a central inlet port 4, there being a downwardly tapered mouth 5 leadingto this port. Below the port is a conical port 6.

'Ihe rotor 7 has a disk-like body with a conical central portion 8, the ejectorblades 9 being mounted on the body of the rotor' at the sides of the conical central portion S.

wardly centrally of the conical port 6 which provides a conical inlet above the blades. 'lliis conical port 6 is controlled by a conical valve 1() which has a conical recess in its under side to receive. the apex of the conical portion of thc rotor. 'fhe upper end of this AThis conical central portion projects up- 'ered at valve 10. projects into the mouth-v 5: of the cylinder. The valve is automatically controlled by means which will appear in detail as the description proceeds.

The ejector cylinder is provided witha tangentially disposed passage 11. The rotor shaft 12 is disposed vertically projecting throuvh the bottom of the cylinder 3. This shaftias a gear 13 at its lower end meshing with the gear 14 on the driving shaft 15. The machine is controlled by a weighing mechanism which, in the structure illustrated comprises the scale beam 16 pivoted at 17 and provided with a weight 18. The scale beam is also provided with an auxiliary scale rod 19 provided with an adjustable weight=202for accuracy in adjustment.v

Suspended from the scale beam 4is a platform carrying frame 2l having a y'oke 22 engaging the pivot 23 on the scale beam. The back 24 and sides 25 are ixedly mounted u ppii.tl1e scalefranie or hangers providing a support for the bags operi at the front.'

To assist in placingand supporting. the b ag's', I'providega'bag'holder 26i which is mounted within the weighing machine walls toreceivethe rearportion of the bav indicat edbyl dotted lines at 27 in Inv; The

platforlii comprises a pair. of. sections-28 ,piv-

29 tothe bottom of 'thebagholdexg These platform sections are held 4yieldingly in'er ted, position of; the springs 30'. These springs are adjusted to sustain a .weight equal to. apprpgimatel that, of a bag so, that. as soo n as t ey,=.are su bjected to theuentire weight of. a lilledbag thapltfrmpens. tedishargetha bee Thevsale .beam .alsfi' cmtieseipletelike.

Spent .ceiaer 31.1 which constitutesi a valve for. .the-discharge .part-.11. di the. ejeef ing,sabia degl/ riding on the scale beam arm .Shewainlis i The carrierl has .an upwardlyprojecting arm provided with a. counterweight. 36 for the carrier. The carrier is provided .with a pair of spouts 37 pivoted at 88 and; rojecting f orwardly, a 1 b ove the scale p1at o rm to receivefthebags 27. These spoutsa-re held in erecfted positionby the latches 39 mounted on the carrierhl, the la-tches being disengaged by thetriparm 40, see Fig'. III, the latches being alternatelybroug'ht into coacting relation with,th is trip arm asthe carrier advances.

As the carrier moves downwardly with the scale beam the latch iseugagedby the' which is of the valve type, slipping therefrom, the spouts are returned to erected position by means of the coiled springs 65. The latches 44 are held yieldingly in engaging position by means` of the springs 4G.

The bags are placed upon the spouts in inoperative po;ition, or out of register with the discharge port of the ejector and are held in position by the latches -l-l which are piv` oted at 45 and held yieldingly in position by means of the springs 46. The bag holders arearranged so that after a bag has been engaged therewith, pull upon the bag tends to clamp'the bag holder until the spout tilts to release the bag, when it falls away from the bag holder.

The carrier is automatically shifted or oscillated, its :ictuatiion being controlled by the movement of the scale beam so that upon'the discharging of a filledbag the carrier is actuated to bring the other spout, having a bag thereon, into operative relation to the ejector, the carrier serving, as stated, as a valve for the ejector.

`Above thecarrier is a. carrier actuating lever 47 pivoted m43 and provided with a roller 49 engagingthe yoke 50`on the upper end of the carrier, the yoke having seats 51 at, its. ends adapted ,to receive the roller. 49 when the carrier is at -the extremes of its strokes,j the lever holding the carrier in this position. frame,\v hil e the carrier is, as stated, carried by the scale beam. The upward Inovement of the carrier on thescale beam swings o r tilts the carrier.

The, actuating, leven. 4T is automatically shifted on, thedownward movement of the c arrierby. means. of. the.links 52 which are connectedtqtheJever at opposite sides of its ivob and; have a lost motion connection to t ecarrier. The links are slidably engaged with tappets 53 on .theends of the It will be. observed that as the carrier. moves downwardly from its initial position, or the position in which it is supported when the scale beam is inits initial position, the tappet 53 on the side 0f vthe yoke, with whichihe roller is engaged. as shown in Fig. VI, will engage the stop onthe coacting link, swingingthe lever to its .opposite position. `The rollers are released from their seat in the yokeby the initial downward movement ofthe carrier.

This shifting of the lever and the 4vertical movement of the carrier causes its oscillation to bring first one spout and then the other into register with the discharge port- 11.

To provide means for manually adjusting the carrier, the lever 4T is provided with a handlc 55.

l provide a stop :36 which is pivoted at 57 at one cud and adapted to bc supported at. the

The lever is. mounted upon. the

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other end by the rest 58. This stop has a rest 59 adapted to be alternately engaged by the stop pins 60 on the counterweight 36. the carrier moves downwardly the stop pins are disengaged, allowing the swingingof the carrier, the stop 56, however, dropping down to engage the other stop pin, thereby positioning the carrier and relieving the carrier parts of shock as they are brought to rest at the end of the stroke.

I also provide the carrier with a pair of adjustable stopA members 61 and 62 which alternately engage with the frame part 63. 'lhe stop 62 is shown in engagement with the carrier in the position shown in the left hand unit of Fig. l and the stop 6l is shown in engagement in the position shown in the right hand unit. The stop 62 has an intnrned or hooked outer end.

In order to prevent the packing of the material in the ejector cylinder during the time when the discharge passage is closed, I provide means for automatically closing the valve 10. The valve is connected to the arm 64 on the rock shaft (36 by means of the coupling 67, which engages the vert-ical stem 68 of the valve. This rock shaft projects to the outside and has an arm 69`longitudinally slotted at 70 to provide an adjustable conneetion tozthe valve actuating rod 71. The rod has a pin 72 adjustably engaged in the slot.

A spring 73 connectedl to the outer end of the arm 69 tends to hold the valve yieldingly open, thereby overcoming the tendency of the material within the cylinder to seat the valve. However, should the pressure of the material in the cylinder become excessive, as by the clogging ofthe discharge passage or-from some. other cause, the pressure of the materialwill-close the valve 10, thus checking the feeding-into the cylinder and lprevent-' 'the rollerbecoming wedged or packedwlith material. f Thefgvalve rod Ilfs actuated by means of the camg74 on the tubular shaft 7 5, the cam having' an abrupt drop at one side of its lift so that thelvalve is quickly released, the connecting rod being provided with a tappet 76 riding on thecam. The rod is slotted at 77 to engage the shaft thereby retaining it in position.

The shaft- 75 is dri-ven with an' intermittent movement to close the valve, as stated, during theshifting of the spout carrier member, during which-period the discharge of the ejector is closed.

The mechanism for accomplishing this in the structure illustrated consists of the cam 78 whichis connected to the shaft 75, the shaft 75 being supported on the shaft 79 having the ratchet wheel 8U thereon. The cam 7S is connected to this ratchet wheel by means ol the pawl 8l which is pivoted on the cam at 82 and urged to engaging position by the spring S3. pawl releasing or tripping tappet 84 is adjust-ablymounted on the tripping lever 85 pivoted at 86. The lever has a downwardly projecting arm 87 resting on the arm 88 carried by the scale platform body.-

As the scale platform or frame moves downwardly under the weight of the filled sack, the tripping tappet 84 is disengaged from the pawl,allowing the pawl to engage with the ratchet on. the shaft 79, thereby driving the shaft 75 and closing the valve.

To insure a full stroke of the scale beam and associated parts, a cani 78 is arranged on the shaft 79 to coact with the lever 85, the lever 85 being provided with an adjustable arm 89 with which the cam engages. l'lo prevent overthrow of the shaft 7 5 I provide a friction brake means consisting of a pair of brake arms 90 engaging a brake drum 91. lhese arms are supported by a rod 92 and the adjusting bolt 93. The shaft 79 is connected to the main driving shaft 15 by means of the vertically disposed transmission shaft 94 having a. gear 95 thereon meshing with a worm 96 on the shaft 15. The shaft 94 has a gear 97 meshing with a gear 98 on the shaft 79.

In the modification shown in Fi XIII the ejector cylinder 99 is provided wit two tangentially disposed discharge passages 100 arranged on opposite sides .of the ejector cylinders, there being a filling unit su'ch as described on each side of the ejector.- My improved filling machine is of. .very large capacity, is automatic in; operation, the operator merely being required to place the bags upon the spoutsand it is not-likely to become clogged.

W'hile the embodiment Aillustrated is especially designed for handling heavy material such as cement, my improvements are readily embodied or adapted for handling other materials. I have ,not illustrated certain other embodiments which I 'contemplate as I believe the disclosure made will enable those skilled'in the art-to embody or adapt my improvements as may' be desired.

Haring thus described my invention what l clainras new =and desire to secure by LettersPatent is:

1.' In a. structure. of the class described, the combination of an ejector cylinder provided with an inlet port opening centrally atthe top thereof, a rotor provided with .blades and having a. deflector disposed eentrally of said port, an upwardly seating inlet valve for saidiport, an arm on which said valve is rotatably mounted, the axis of the valve coinciding with that of the rotor shaft. a rock shaft by which said arm is carried, an actuating means for said rock shaft including a cam. a feed valve, a weighing mechanism. means for controlling said feed valve operatively associated with said weighing mechanism to be controlled thereby, and

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means for controlling the rock shaft actuating cam operatively associated with said weighing mechanism to be controlled thereby.

2. In a structure of the class described, the combination of an ejector cylinder provided with an inlet port opening centrally at the top thereof, a rotor provided with blades and having a deflector disposed centrally of said port, an upwardly seating inlet valve 'for said port, a feed valve, a weighing mechanism, means for controlling said feed valve operatively associated with said weighing mechanism to be'controlled thereby, and means for controlling the inlet valve-operatively associated with said weighing mechanism to be controlled thereby.

3. In a structure of the class described, the combination of a cylinder having an inlet. port at the top thereof, a rotor, blades disposed on the upper side of said rotor, said cylinder having a tangentially disposed discharge opening in the horizontal plane of said rotor blades,'an vupwardlyseating inlet valve for said port, a feed valve, a weighing mechanism, means for `controlling said feed valve operatively associated 'with said weighing'm'echanism, and means for controlling said inlet valve operatively associated with said weighing mechanism.

4. In astructure of the class described, the combination -of a cylinder having an inlet port at the'top thereof, a rotor, an upwardly seating inlet val-ve `for said port, a feed valve, a weighing mechanism, means for controlling said feed valve operatively associated'with said weighing mechanism, and means for controlling said inlet valve operatively associated :with Ysaid weighing mechanism.

-5. In a'structure of the class described, the combination of an ejector cylinder, an inwardly opening inlet -valve therefor, means for'closing saidinlet valve permitting the 'normal floating movement thereof, whereby the undue filling of the cylinder tends to close the inlet valve, a discharge valve for said cylinder, a weighing mechanism, operating connections for said inlet valve to said weighing mechanism, and operating connections for said delivery valve'to said weighing mechanism.

6. In a'structure-of the class described, the

combination of la cylinder, an inlet valve therefor, an ejector .rotor for said cylinder, a discharge valve for said cylinder, a weighing mechanism, and operating connections for said vvalves to said weighing mechanism whereby the valves are closed upon the actuation of the weighing mechanism under load.

7. In a structure of the class described, the combination of al cylinder, an inlet valve therefor, a vrot-or for said cylinder, a weighing mechanism, and operating connections for -said valve to said weighing mechanism whereby -the valve is closed upon the actuation of the weighing mechanism under load.

8. In a structure of the classdescribed, the combination of a cylinder, an ejector' rotor for said cylinder', a discharge valve for said cylinder, a weighing mechanism, and operating connections for said valve to said weighing mechanism whereby the valve is closed upon the actuation of the weighing mechanism under load.

9. In a structure of the class desffribed, the combination of a weighing mechanism including a scale beam` a carrier pivotally mounted on said scale beam for vertical and oscillating movement, a yoke on the upper end of -said carrier having seats at opposite sides of said carrier pivot, a pivotally mounted actuating lever coaeting with said yoke to actuate said carrier as -the Alever is actuated and hold it in its actuated position when said scale beam is in its initial position, a pair of links connected to said lever on opposite sides of its pivots, tappets with which said links have sliding engagement. disposed at the ends of said yoke so that said lever is actuated to oscillate the carrier upon the movementof the scale beam, an arm on said carrier projecting above thev carrier pivot, a counterweight on said arm, a pivotally mounted stop bar, a rest for the swinging end of -said stop bar, stops on said coimterweight ccacting with said stop bar, said stops being disengaged by the downward movementl of the scale beam, adjustable stops for the lower end of said carrier, and spoutsemountedon said carrier to be alternately-.brought to receiving position.

.10. In a lstructure of the classl described, thecombination of a weighing mechanism including ascale beam, a carrier pivotally mounted -on said scale beam 4for vertical and oscillating movement, a yoke on the upper end ofsaid carrier having seats at opposite sides 'of said carrier pivot, a pivotally mounted actuating lever coacting with said yoke to actuate-said carrier as the lever is actuated and hold it in its actuated position when said scale vbeam is in its initial position,a pair of links connected to said lever on opposite/sides of its pivot, tappets with which said links have sliding' engagement disposed at the ends of said yoke so that said lever is actuated to oscillate'the carrier upon the movementof the scale beam,an armon said carrier projecting above the carrier pivot, a counterweight on said arm, a pivotally mounted stop bar, arestforthe swinging end of said stop bar, stops -on .said counterweight coacting with said stop'bar, said stops being disengaged by the downward movement of the scale beam, and spouts mounted on said carrier to be alternately brought to receiving position.

ll. ln a structure of the class described,

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the combina-tion of a. weighing mechanism including a. scale beam, a. carrier pivotally mounted on said scale beam for vertical and oscillating movement., a yoke on the upper cud of said carrier having seasat opposite sides of said carrier pivot, a p ivotally mounted actuating lever coacting with said yoke to actuate said carrier as the lever is actuated and hold it in its actuated position when said scale beam is 1n its initial position, a pair of links connected to said lever on opposite sides of its ivot, tappets with which said links have s iding engagement disposed at the ends of said yoke so that said lever is actuated to oscillate the carrier upon the 'movement of the scale beam, adjustable stops for the lower end of said carrier, and spouts mounted on said carrier to be alternately brought to receiving position.

12. In a structure of the class described, the combination of a Weighing mechanism including a scale beam, a carrier pivotally mounted on said scale beam for vertical and oscillating movement, a yoke on the upper end of said carrier having seats at opposite sides of said carrier pivot, a pivotally mounted actuating lever coactiiig With said yoke to actuate said carrier as the lever is actuated and hold it in its actuated posi` tionwhen said scale beam is. in its initial position, {a pair of links connected to said lever onopposite sides of its pivot, tappets with which said links have sliding, engagement disposed at the ends of said yoke so that said lever is actuated to oscilate the carrier upon the movement of the scale beam, and spouts mounted on said carrier to be alternately brought to receiving position.

13. In a structure of the class described, the combination of a weighing mechanism including a scale beam, avcarrier pivotally mounted on said scale beam for vertical and oscillating movement, a Ayoke on the upper end of said carrier, a pivotallymounted actuatingllever coacting with said yoke to actuate said carrier as the lever is actuated and hold it in its actuated position when said scale beam 4is in its initial position,A a pair of links connected to said lever at opposite sides of its vpivot andhaving a lost motion connection to said carrier at opposite sides of its ivot so that said lever is actuated to oscil ate the carrier upon the movement of the scale beam, 'a counterweight for said carrier, stops for said counterweight, said stops being disengaged by the downward movement of the scale beam, and spouts mounted on said carrier to be alternately brought to receiving position.

14. In a structure of the class described, the combination of a weighing mechanism includinc a. scale beam, a carrier pivotally mounte on said scale beam for vertical and oscillating movement, a yoke on the upper end of said carrier. a pivotally mounted actuatingT lever coacting with said yoke to actuate said carrier as the lever is actuated and hold it in its actuated position when said scale beam is in its initial position, a pair of links connected to said lever at op posite sides of its pivot and having a lost inot-ion connection to said carrier at opposite sides of its pivot so that said lever is actuated to oscillate the carrier upon the movement of the scale beam, and spouts mounted on said carrier to be alternately brought to receiving position.

15. In a structure of the class described, the combination of a.iveighing mechanism including a scale beam. a feed control member pivotally mounted on said scale beam for vertical and oscillating movement, a yoke on the upper end of said feed control member, a pivotally mounted actuating lever coacting with said yoke to actuate said feed control member as the lever is actuated and hold it in its actuated position when said scale beam is'in its initial position, a pair of links connected to said lever'at opposite sides of its pivot and having a lost' motion connection to said feed control memberv at opposite sides of its pivot so that' said lever is actuated to oscillate the feed control member upon the movement of the scale beam, a countervveight for said feed control member, and stops for said .counterweightg said stops being disengaged by the "downward movement of the scale beam.

16.`In a structure of the class described, the combination o'f a, wei. hing mechanism including a scale beam, a eed control'm'ember pivotally mounted ondsaid' .scale beam for 'vertical and oscillating movement, a yoke on theupper endfof saidfeed control mem*- ber, la pivotally 'mounted actuating lever coact-ing with said yoke to actuate said control member as the lever is actuated and hold it in its actuated osition when said scale-beam is in its initial position ,.a nd' a pair of links -connected to said lever at opposite sides of`its pivot and having a lost motion connection to said feed control member at opposite sides of its pivot so that said lever is actuated to oscillate the feed control member upon the movement of Athe scale beam. l i

17. In a structure of the class described, the combinationl of a hopper, a-feed means disposed below SaidhOppei, an inlet valve for said feed means, a discharge valve for said feed means, a weighing mechanism including a platform frame, operatimr connections for said discharge valve to said weiching mechanism whereby the discharge vailve is closed upon the actuation ofthe weighing.,r mechanism, means for controlling said inlet valve comprising a valve actuating cam, a driving ratchet, a coacting pavvl .operatively connected to said valve actuatingl cam, a

pivoted lever provided with a pawl disengaging tappet., an arm on said platform cngaging said lever, a cam operatively connected to said ratchet and coacting with said lever, anda friction brake operatively asso- 'ciated with said cams for preventing the overthrow thereof.

18. In a structure of the class described, the combination of a hopper, a feed means disposed below said hopper, an inlet valve for said feed means. a discharge valve for said feed means, a weighing mechanism in cluding a platform frame, operating connections for said discharge valve to said wei ghing mechanism whereby the discharge valve is closed uponv the actuation of the weighing mcchanism,.meansfor controlling said inlet valve comprising a. valve. actuating cam, a driving ratchet, a coacting,r pawloperatively connected to said valve actuating cam, a pivoted vlever provided. with a; pawldisengaging tappet, an arm on said platform engaging said lever, `and a cam operatively connected to said ratchet and coacting with said lever.

19.. In a structure of the class described, the combination of a' hopper, a-feed means disposed below said hopper, an inlet valve for said feed means, a weighing mechanism including a platform frame, means for controlling said inlet valve comprising a valve actuating: cam, a driving ratchet, a coacting pawl operatively connected-to said valve actuating cam, a pivotedlever provided with a pawl disengaging tappet, an arm on said platformengagmgsaid levera lever actuating cam operatively associated with said ratchet and coactingwith saidlever, and a friction brake operativelyl aociated with said' camsfor preventing the overthrow thereof.A

2.0. In a-.sti'ueture of the class described, the combination of a hopper, a feed means disposed below said hopper, an inlet valve for said .feed means, a weighingmechanism including; a, platform frame, meansfor controllingsaid inlet valve, comprising a val've actuating cam 'a driving ratchet, a. coacting paw]v operatively connected to said valve actuating cam, a pivoted lever provided with a pawl disengaging tappet, an arm on said platform engaging said lever, and a lever actuating cam operatively associated with said ratchet and coacting with said lever.

21. In astructure of'the class..described, the combination of a hopper, a feed Ameans disposed below said hopper, an inlet valve for said feed means, a discharge valve for said feed means, a. weighingr mechanism. operatingconnections for said discharge valve to saidweighing mechanism whereby the discharge valveis closed upon the actuation ofthe weighing mechanism, means for controllingr said' inlet valve comprising a valve actuating cam, a. driving ratchet, a. enacting pawl operatively connected to said valve actuating cam, and means 'for controlling said pawl operatively associated with said weighing mechanism, and a 'friction brake operatively associated with said valve actuating cam for preventing the overthrow thereof.

22- In a structure of the class described, the combination of a hopper, a feed means disposed'below saidl hopper, an inlet valve for said feed means, a discharge valve for said feed means, a weighing mechanism, operating connections for said discharge valve to said weighing mechanism whereby the discharge valve is closed upon the actuation of the weighing mechanism, means for con trolling said inlet valve comprising a valve actuating cam, a driving ratchet, a enacting pawl operativelyconnected to said valve actuating cam, and. means for controlling,r said pawl operatively associated with said weighing mechanism.

23.' In a structure of the class described, thecombination of ahopper, a feed means disposed below said hopper, alvnlet valve for said feed means, a'v'eighing mechanism, means for controlling said inlet valve comprising a valve actuating cam, a drivingr ratchet, a coacting pawl operativcly connected to 'said valve actuating cam, means for controlling said'.pawl operativelyassociated with .said weighing mechanism, and a friction brake operatively associated with said'valve actuatng'ca-m for preventing the overthrow thereof.

24. In a structure oflthe class described, the combination' of a'hopper, a feed'vmeans disposed below'said hopper,'aninlet valve for said feed" means, a3 weighing mechanism, and'meansf'or cont-rolling said inlet valve comprising a valve actuating cam, a driving ratc vet', la' coacting- -pavvl operatively connected to said valve actuatingcam. and means for controlling saidfpa-wl operativel associated -with said weighing mechanism to be actuated by' themovement of'the weighing mechanism-.under load.-

25. In a structure ofthe class described. the combination of'a weighing mechanism` a feed means, an inlet valve for said feed means, a'discharge valve for saidfeed means, operatrinv` connections from said weighing mehanism to said discharge valve whereby the discharge valve is closed upon the actuation of; the Aweighing mechanism, means for controlling said inletvalve comprising an actuating cam` a driving. ratchet, acoac-ting pawl operatively connected to said valve actuating cam. and a pawl coutrol means operatively connected with said weighing mechanism whereby the paw] is engaged with the ratchet upon the initial movement of the weighing mechanism.

26. In a structure of the class described. the combination of a weighing mechanism` a.

`feed means', aninlet. valvefor said feed means, means forcontrolling said Ainlet valve comprising anA actuating' cam, a` driving ratchet, a coacting pawl operatively connectcd to said valve actuating cam, and a pawl control means operatively connected with said weighing mechanism whereby the pawl is engaged with the ratchet upon the initial movement of the weighing mechanism.

2?. lu a structure of the class described, the combination of a weighing mechanism, a tecd means, an inlet valve for said feed means, a discharge valve for said feed means, operating connections from said weighing mechanism t-o said discharge valve whereby the discharge valve is closed upon the actuation of the weighing mechanism, and means for controlling said inlet valve operatively connected to the weighing mechanism to be actuated by the movement of the weighing mechanism under load.

28. In a structure of the class described, the combination of a weighing mechanism including a scale beam, a control member pivotally mounted on said scale beamv for vertical and oscillating movement, means for oscillating said control member actuated by the vertical movement thereof, means for insuring a full down stroke of the scale beam including a driving ratchet, a pawl operatively associated with said ratchet, a cam connected to said pawl to be `driven therewith, a lever operatively associated with said cam and provided with a pawl disengaging tappet, and operating connections for said lever to said scale beam whereby the pawl is released on the initial movement of the scale beam and the camis driven to insure the full stroke of the parts.

29. In a structure of the class described, the combination of a weighing mechanism includino a scale beam, a platform frame carried t ereby, a control member pivotally mounted on said scale beam for vertical and oscillating movement, means for oscillating said controllmember actuated by the vertical movement thereof, a driving ratchet, a pawl operatively associated with said ratchet, a cam connected to said pawl to be .driven therewith, a lever operatively associat-ed with said cam and provided 'ivith a pawl disengaging tappet, and an arm on said platform frame coacting with said lever.

30. In a structure of the class described, the combination of a weighing mechanism including a scale beam, an oscillatinnf control member pivotally mounted on said scale beam, means for actuating said control member controlled by the vertical movement of said scale beam,- a power means operatively associated with said weighing mechanism for insuring complete oscillation thereof on each actuation of the weighing mechanism, and a control for said driving means whereby the same is actuated'on the initial down'wa'rd movement ofthe scale beam; "I f 'y In a structure of the class described', the'combination` of a weighing mechanism including a Scale ibeam, acontrol'mei'nber pivotally mounted on said scale beam for vertical an d' oscillating move'n'ie-nt` means for oscillating` `said control member actuated by the vertical movement thereof, and driving means for insuring a full down stroke of the scale beam adapted to be engaged by the initial movement of the scale beam.

32. In a structure of the class described, the combination of a weighing mechanism, a combined spout carrier and feed control member mounted on said weighing mechanism for oscillating and vert-ical movement, spouts mounted on said member to be alternately brought to operative position, a driving ratchet, a driven pawl operatively associated with said ratchet, a cam connected to said pawl to be driven therewith. a lever operatively associated with said cam-and provided with a paw-1 disengaging tappet, and operating connections for said leverto said weighing mechanism to be actuated by the movement of the weighing mechanism under load.

33. In a structure of the class described, the combination of a weighing mechanism, a driving ratchet, a driven pawl operatively associated with said ratchet, a cam connected to said pawl to be driven therewith, a lever operatively associated with said cam and provided with a pawl disengaging ta-ppet, and operating connections for said lever to said weighing mechanism to be actuated by the movement of the weighing mechanism under load.

34. In a structure of the class described, the combination of a weighing mechanism, an oscillating carrier supported by said weighing mechanism for vertical movement, means for oscillating said carrier controlled by the vertical movement thereof, spouts tiltingly mounted on said carrier to be alternately brought to operative position, a dumping platform operatively associated with said weighing mechanism` and a spring for yieldingly supporting,Y said platform in erected position. the platform coacting with the spout to supportt-he bags but being of insutiicient strength to sustain the filled bags when they are discharged from the spouts.

35. In a structure of the class described, the combination of a weighing mechanism, a titingly mounted spout, means for releasing the spoilt operatively associated with the weighing mechanism` a dumping platform operatively associated .with sai weighing mechanism, and a spring for yieldingly supporting said platform in erected position, the platform coacting with the spout to support the bag but being of insutiicient strength to sustain the filled bags when they are discharged from the spout.

36. In a structure of the class described, the combination of a. Weighing mechanism including a dumpingr platform` a tilting spout, means operatively associated. with Said AWeighing mechanism for controlling the tilting of said spout, and a spring for yieldingy supporting said platform in erected position, said spring being of insufficient strength to sustain the filled receptacle when discharged from the spout.

In witness whereof I have hereunto set my hand.

` LEWIS D. NELSON.