US1359311A - Bag-packaging press - Google Patents

Description

T. M. AVER-Y.

BAG PACKAGING PHE-ss.

APPLICATION FILED FEB. I0, 1919- 21%,; 35993'3 1 Patented Nov. 16,1920.

6 SHEETS-SHEET I.

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BAG PACKAGING PRESS.

APPLlcATloN FILED FEB. 10,1919.

T. M. AVERY.

BAG PAcKAGmG PRESS.

APPLICATION FILED FEB. 1o, 1919. 3 1 1 Patented Nov, 16, 1920.

6 SHEETS-SHEET 3.

T. Mi AVERY.

BAG PACKAGING PRESS.

APPLICATION mm FEB. lo, |919.

Panted Nov. 16,1920.

6 SHEETS--SHEET 4.

T; M. AVERY.

V BAG PACKAGING PR'ESS.

APPLlcATloN FILED FEB. lo. |919.

1,359,3 1 1 Patented Nov. 16, 1920.

e SHEETS-SHEET 5.

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attua,

T. M. AVERY..

BAG PACKAGING PRESS.

APPLICATION FILED FE B.10,19|9.

UNITED STATES i PATENT oFFicE.

TRUE M. AVERY, OE GnENsEAELs, NEW YORK, f'AssIGNoR 'ro UNION BAG a PAEE'R CORPORATION, OE NEW YORK, N. Y., A CORPORATION OE NEW JERSEY.'

BAG-PACKAGING' PRESS.

Specification of Letters Patent. l VYPatented NOV. 16, 1920.

Application ined February io, 1919. serial No. 276,089. 1

T0 all whom t may concern Be it knownthat I, TRUE M. AVERY, a citizen ofthe United States, residing at Glens Falls, in the county of 1KNarren and State of New York, have invented Vnew and useful Improvements in Bag-Packaging Pressesi of which the following is a specification.

Il`his invention relates to an improved press especially applicable to the work of baling or packaging paper bags and the principal objects of the invention are to promote speed and facility of operation, to provide for automatic operations at all times and in all respects completely under the vOperators control andto provide apress which shall be readily adaptable to bags and bag packages of if'arying proportions and which will be sturdy, durable and relatively compact.

The invention relates more `particularly to L pneumatically operated press, and with the stated objects in view the invention resides in certain features of structure, combination and yrelation involving the, cooperating elements whereby the pneumatic operation of thev Lpress is carried out, and also .in certain other details of structure and arrangement,rtending .to promote facility of use, all-of which features .will be set forth at length as the description proceeds.

An embodiment of the invention is illus trated in-the accompanying drawings, Whereiii:-

Figure 1 is a plan View of a press in which the features of the invention are incorporated, the active part or plunger being in its retracted position.

Fig. 2 is a side elevation.

Y Fig. 3 is an elevation from the rear end of the press.

F ig. L1 is a vdetail vertical sectional view of the pneumatically operated plunger and its appurtenances.

Fig. 5 is a detail elevation, partly in section, on the line 5-5 of Fig. 4.

`Fig. -6 is a detail crosssectional View to a somewhat enlarged scale on the line 6 6 of Fig. l.

Fig. 7 is a detail perspective view of an element of the table upon which the bags are packaged or baled.

F ig. S is a detail cross-sectional view to a somewhat enlarged scale on the line 8 8 of ig. el.

Figs. 9` and 10 are horizontal sectional views on the respective ylines-9 9 and 10-10 i 'Y of ig. 8. y

Figs. `11` and 1 2 are detail vertical seotional views on the respective `lines 11-11 and 12-12 of Fig. 8. V

F 13 is a detailelevation showing the working face of the controlling valve. Similar characters of reference designate corresponding ,parts throughout the several versely disposed l.plate arranged at; the .front v end of the ,table and ,its dimensions yare selected with regard fto the-dimensions of the bags which make up the package. 'lho platform 2 preferably .has ,at its 'front Vend 21 Clepefldllg'leXSIlSon 5 yto Vwhich the plate 3 is secured Vby fastenin screws k6. Said plate may bo provided with vertical slots 7 through which said screws extendland which enable vertical ,adjustments of the position of said plate, as may be desired, ,in accordance with the vertical dimension of the bas as laid on their side edges. lThe movable head 4 consists of a plate 8 which is carried by the reciprocatoryplunger 9 andaspring pressure bar 10 which is supported ,by but spaced .from the 5plate 8. Foi-,the support of f the bar 10 a bra ret 11 is secured at one endv of the plate 8 by a suitable fastening 12 and the bar 10 is secured at the front of the bracket 11 by a suitable fastening 13. Thebar 10 hasits other end free, and,beingspringy or resilient, has a yielding actionat its free end. Such yielding action ,is,.however, restricted or arrested by an abutment 14 which is spaced slightly to the rear of the bar 10 and which is secured by a suitable fasten- A ging 15 tothe plate 8 at; the end thereof remote from the bracket 11. The plate 8 is secured by fastenings 17 tothe attachment fflange Y18 at the front end ofthe plunger 9 and is provided with horizontal slots v16l through which pass the bolts of the fastenprovides for the vertical adjustment of the bar 10. The attachment flange of the abutyment 14 maybe formed lwith a horizontal Slot 21 through which the bolt of the fastening 15 extends and which provides for a lateral adjustment 0f 'the position 01"- said abutment to compensate for a lateral adjustment of the position'of the bar 10.

In the use of the press, the bags to be Vpackaged are placed on edge parallel tc the head 3 and bar 10 on a sheet'of paper which provides the wrapper, and cords are tied at suitable intervalsV about the package. To promote such use, the bed plate 2 carries at its front end and immediately in the rear of the head 3 a baling platform, of which 22 is a general designation and whose office is to provide an appropriate resting surface for the purpose in view. The platform 22 preferably consists of a pair of plates 23 mounted for transverse adjustment on the bed plate 2. As shown, said bed-plate is provided with a pair of transverse grooves 2dextendingin parallel relation between the sides thereof and each plate 23 is provided along its under face and in laterallyprojecting relation with a tongue 25 which nts and is adjustable in one of the grooves 2li., therprojecting portion of each tongue eX- tending under the companion plate 23 and being formed with a longitudinal slot 26 through which passes the bolt or shank of the fastening 27 employed for the connection of the tongue to the bed plate 2, such slot enabling suitable lateral adjustments of the positions of the plates 23. The number of cords employed for tying the package will be a matter of choice and will be dependent on the dimensions ofthe bags and the dimensions of the package, large bags and large packages obviously requiring more securing cords than smaller ones. 1n any case, the head 3 will be provided with vertical slots 28 extending from its upper edge and affording cord guides and the plates 23 will be provided with longitudinal grooves 29 through which the cords are led, said grooves, of course, alining with the particular slots 28 which are used as cord guides. It will be obvious that the number and relative spacing of the slots 28 and the width of the grooves 29 will be selected with regard such positions.

to the number and relative spacing of the cords by which the package is to be secured. The ballsof cord may be arranged'in a receptacle supported under the bed plate 2 by Y Y means of a shelf or platform carried by the frame 1; and the cords will be passed through holes 30 in the bed plate 2 somewhat in the rear ef the platform 22 and through holes 31 in the plates 23 and will,

thence be led through the grooves V29 and slots 28, the plates 23 having flaring recesses 31 in their under faces which lead to the framing'of the table 1 and may be suitably weighted to cause them to quickly fall to The oliice of the plates 32 is to effect a uniform horizontal arrangement or evening7 of the bags in the group, and also properly to locate the bags, as a group, transverselyV Y with relation to the heads 3 and L1,'and for such purposes, after the bags have been placed upon the sheet of paper which 'forms the wrapper, the plates 32 are swung to vertical positions in which they bear against the ends of the bags and push inward any bags which may happen to project, thus insuring a uniform arrangement of all the bags. rlfhe compression of the group of bags to the desired density is, of course, Yproduced by movement of the head l toward the head 3; and in the formation and securing of the package ori bale the pocedure is as follows: The opera: tor first arranges the cords in the slots 28' and then lays the sheet which is to form the wrapper upon the platform 22 and over the cords. Thereupon, he effects the movement of the head 4 to its advanced position and compresses the stack of bags. TWhile the head l is' held in its advanced position so as to maintain the bags under compression, he

folds the transverselydisposed end portions of the wrapping sheet upon the bags, the folded portion at the rear of the package encompassing 4the spring bar 10. Thereupon, drawing the cords from the rear of said spring bar over the package he ties the same to the free endsof the cords hanging from the slots 28 and then cuts the cords. He then returns the head 4 to its initial or retracted position and when said head reaches such position he quickly removes the package from the machine by sliding it transversely beyond that side of the machine toward which the free end of the bar 10 projects, the machine then being ready for another operation. In such sliding removal of the package the bar 10 serves as a guideV and the web of the wrapper lying to the rear of said bar passes between the same and the abutment 111. When the package is re- Y slightly spaced above said .bed plate where- Y The foregoing Adescription deals with structural features which are old in theart but whose disclosure in this application will promote an understanding ofthe features of utility and advantage of my present invention. Y

One feature of the invention consists in the provision of means located in the rear of the platform 22 for holding the wrapping paper spaced from'the bed plate. Such means preferably consists of leaf springs 34 which are disposed longitudinally of the bed plate 2 and, being yieldable under the weight of the package, serve to hold the sheet of paper which provides the wrapper 'by the operator may readily graspandmanipulate said sheet in rconnection withV the folding and tying operations, as above described.

The plunger 9 reciprocates in a cylinder 35 and the invention includes means forv supporting the somewhat heavily weighted front end ofthe plunger duringthe movevment thereof, thereby to insure that the spring bari() carried thereby shall always occupy a plane normal to the plane o'f the platform 22 and consequently to -insure that said bar, during its advance, shall bear uniformly throughout its area lupon the stack of bags and shalleffect a uniform compression of the said stack it@ the density required. This means vpreferably consists of stabilizing arms 36 which are located at each side of and project rearward from the plate 8 and bear upon -the bed plate 2. In the construction preferred, the arms 36 are provided at their ends with anti-friction rollers 37 and the bed plate 2 is provided with rails 38 upon which said anti-friction rollers operate, the length of the rails 38 being selected to insure that the bar i() will be supported, as described, throughout its range of movement.

The cylinder 35 is, if course, disposed longitudinally of the table 2 and is provided with projecting attachment lugs 40 for co eperation with fastenings 4l by which said cylinder is secured to the bed plate. A It is preferred that the cylinder'35 shall be adjustable lengthwise of the bed plate 2, and for such purpose the bed plate is formed withh longitudinal slots 4l through which the bolts of the fastenings 4l extend, the lengthwise adjustment of said cylinder being for the purpose of adapting the head 4 to packages of varying thickness.

The rear ends of the springs 34are preferably secured to the front Vpair vof cylining said plunger.

'der attachment lugs 40 bythe nuts of the associated fastenin'gs 4lv andV the free ends of said 'springs are preferably downwardly offset, a's-at 39, and, of course,bear uponv the bed plate l2, the offsets 39 insuring that lthe active portions of the springs shall project suitably abovethe upper face of-said plate.

Obviously, however, thesprings 34 maybel Yotherwise formedand arranged for the pur poses in view. l y

'The imostri'mportant features ofthe vin'- vention Vare concerned with the vco'perating relation ofthe plunger 9 and thecylinder 35 and the elements of the valve structure 'forcontrolling the operation of-said plunger. rlhe 'valve' structure is :preferably: lol cated at the rear end cf .the cylinder 35 and is connected vto said cylinder whereby to admit air thereto for effecting the advance or Y lretraction of the plunger and simultaneously to exhaust ythe air used for the neXt previous stroke ofthe plunger. The plunger 9 'has atits inner -end a double piston, whose faces re-act to the air admitted for 4effecting the respective forward and rearward strokes.- rIhe structural details of the said piston are ancillary lfeatures vof the invention; andthe piston preferably comprises a cupped member 42 lwhich is fitted over the reduced rear vend of the plunger and is secured thereto by screws 43 which also secure a flat ring or plate 44 employed for the retention of a rearwardly directed piston element 45 having sealing engagement with the wall of the cylinder 35; a similar, but forwardly directed, 'piston element 46 is arranged at the frontiof the member 42 and is held by and betweenthe same and a Vretaining ring47 surrounding the plunger 9 and bearing against a shoulder 48 circumscrib- The ring 47 projects slightly in advance of the margin of the element 46 and slightly beyond the circum vference of the plunger 9y and protects the piston 46 against contact with lthe front head of the cylinder. The flange 18 by engagement with the front head of the cylinder limits the rearward movement of the plunger and is arranged whereby the parts at the rearend of the piston will not contact with the rear end of the cylinder when said plunger is fully retracted, the piston element being thus protected. A soft leather cushioning piece or bumper 18a is preferably arranged between said flange and the front endof the cylinder. While a piston having the vabove or equivalent structural details is preferred, and, as stated. is an ancillary feature of the invention, it will be understood that other forms of pistons, constructed to serve the purposes in view, may be adopted, if desired.

The valve structure is preferably selic contained and includes a casing 49 which has as it front end a circumscribing flange sure" for therear end of the cylinder-35 and coperates vwith the controllingvalve The casing a9. is 'extended rearward beyond Y Y the web 52 4and itsfgrear end. is closed by a vhead. i secured by screws 55.

ln the construction, preferred, the valve l53 is formed as a-d-islr and-.is arrar'iged in therear of andV concentricv to the webV 52, bearing against and'cooperating with theV rear face ojflsaid wein, and is operated by an'axially disposed stein 59. vAs shown, said `valvel'ias a rearwardly projecting boss56 which is provided with a diainetrical groove 57 and the head 54 isfprovided with va rearwardly extended bearing V53 for the stem 59, said stem having at its Vinner end a head '60 which ,bears against the boss 56 and is formed with a diametrical tang 6l which `fits closely in the groove 57 and'byfwhich the stein'59 andv valve are Vconnected to rotate together.

The' casing t9 isprovided in the rear or `,the valve 53 and preferably at its lower side with an inlet-connection 62 for live air; and the web 52 is formedwith an exhaust duct 63 having aV connection 64 externally of said casing ,and leading from a main exhaust port 65 open to the rear face of tl e web 52. By virtue of the valve 53, the automatic operation of the press is completely under the operators control and may be effected with suoli rapidity as maybe desirable. TheI function of the` valve is to provide for the admission of air into the cylinder 35 at either side of the piston and the exhaust of air from said rcylinderA at the side of the piston opposite to that at which air is admitted, andv in such function thev Vvalve 53 coperates with the web 52, the 'various coperating air passages in said valve and web being located at equal distances from the common axial center. 1For the admission of air, the preferred construction compses a live air port 67 extending between the flat faces of the valve 53 and'live air passages 68 and 69 in the web 52, vthe passage 68 extending between the flat faces of said web and communicating directly with the rear end of the cylinder 35 and the passage 69 having a lateral connection 70 with an air feed pipe 7l which coinmunicates with the cylinder 35 at or near the front end thereof. rl`he valve 53 is opera- Y tive in either of its extreme positions to pass live air to the cylinder 35 and thus provide for a movement of the plunger; in one of said positions its port 67 alines with the passage 68 andair for the operation of the plunger 9 is admitted in the rear of the piston, and in the other position its port 67 alines with the passage 69'and air for `the operationV of theV plunger 9 is admittedrin side of the-piston, and in-V the construction" preferredjthe web 52l is provided with two exhaust passages, 72 A(and 7 3, respectively,

Aarranged' 'at opposite sides of and equidistant from theY port 65,-the passage 72 having af lateral connection 7 l with an exhaust .pipe 75 which leads freni the cylinder 35 near the rear endthereof and the passage 73 lhaving a lateral connection 76 with an exhaust pipe 77 which leads from the cylinder dnear the front end thereof; the passages 72 and 73 are open to the rear face of said web and communication between each of them and the intermediate exhaust port 65 is established by a groovev or channel 7 8 formed yconcentrically inthe inner or front face of the valve 53. When the valve 53 isv positioned to aline its port 67 with the passage 68 whereby to admit air to the rear of the piston, the channel 78 establishes communication between the passage 73 and the nect the passage 72 and the port 65 where-L by the air in the rear of the piston will be vented through the exhaust duct 63.

rl`he Apipe 77 is connected to the cylinder at a point suitably in the rear of the front endV of said cylinder whereby an air cushion willbe formed in the portion of said cylinder in advance of said pipe for the pur- )ose of cushioning the forward strol-re of the plunger 9 and protecting the press against destructive shocks. For the same iurpose, the exhaust pipe 75 is connected to the cylinder 35 at a point suitably in advance of the rear" end of said cylinder, viz: the web 52, thereby to provide for an air `cushion against which the piston re-acts on its. rearward stroke. In the construction preferred, the air cushion at the rear end of the cylinder is maintained only temporarily in order Vnot to impair the permissible speed with which the press may be operated and the Vair forming said cushion is gradually vented until the cushion ceases to exist, thus allowing'the piston to niove rearward at a safe, but not too slow, degree until its movenieiitis absolutely limited by the engagementof the flange 13 at the front end ofthe plunger 9 with the front end of the cylinler35. For the purpose of gradually reducing or destroying the air cushion at the rear end of the cylinder, the web 52 is provided with an exhaust passage 66 of very small diameter which Vextends, from the front face of said web and is open to the exhaust passage 72. Thus, on the rearward stroke of the piston, there is first a rapid exhaust of air from the rear of the piston through the pipe T5V and passage 72 which continues until the 4piston passes the point at which the pipe 7 5 is connected to the'cylinder 35 upon-which theair cushion becomes effective, greatlyV retarding the speed of rearward movement of the piston, and the air forming said cushion is slowly vented through the exhaust passages 66and. 7 2. it'

will be manifest that "the piston may move in either Vdirectionat high speed but that such high speed movement will have no de structiv'e effect on the press'v owing to the air cushions provided at the front and rear 'of the piston. It will also be manifest that since the air cushion at the rear of the piston A instantly compressingthe bags tothe den sity desiredY and which does not require any sacrifice of compactness. The channel 78- preferably has an ext-ent` at least equal to the spacinglof. the exhaust passages 72 and 7 3 whereby the e'vhaust through eitherdof said passages in connection with the operation of the valve will be initiated'priorto the alinement of the port 67 withY the respective passages 69 or 68, the venting of the air used for the previous stroke thus being accelerated with relation to the admission of air for the ensuing stroke.

Air pressure normallymaintained against the rear face of the valve 53 is effective to hold said valve in good working contact with the web 52. The operation of the valve is, of course, facilitated by regular lubrication; and for this purpose, the casing 49 may be provided in the` rear of the valve 52 with an oil cup 79, while the valve 52 has a central oil passage 80 between `its flat faces and open at the front face of said valve to a distributing channel 81, oil being fed through said passage, under the action of theV compressed air,.to maintain the constant lubrication of the coperating wearing surfaces of the valve 53 and web 52.

The operation of the valve 53 as above described may be effected by any suitable means but the construction disclosed is preferred by reasonof its facility and certainty. As shown, the valve operating means consists of a longitudinal rock shaft 82 arranged under the bed plate 2 and ournaled ably mounted; andthe *segmentV 86` is provided at itssides with stop lugs 88 for cooperation with the flange y85, said flange preferably carrying bumper elements 89 against which the lugs 88 impinge `for the purpose of positively, arresting the movement of the valve stem and valve in either The shaft 82 is operatedl by.

shafftand have their terminal links` secured. Y

by vstuds 95 which are, of course, removable and which project across the groove or channel' i'nwhich the chains or cables.. 93 operate. The sheave or drum 94 is preferably ro-` tatably adjustable 'relatively tothe shaft 82 in order that the degree of rocking'move-y ment ofsaid shaft in/one direction orthe othermay be regulated asdesired; For such. r, l'

purpose, the sheave 94 is connected by a screw 96-t0 a.V suitably constructed clamp element 97 which ,surroundsv the `shaft 82' and may beuset at any vdesired angularfposi tion on said shaft.

In the use of the machine, the only attenf tion required on the part of the operator isV the operation of the pedals 90 and 91, the other operations, apart from wrapping and tying, being entirely automatic.

pedals is operated air is immediately ad! mitted into the front or rear end of the cylinder as the case may be and is vented from the opposite end of the cylinder and the piston is instantly responsive to the admission of air into the cylinder. The reciprocatory movements of the plunger 9 and head 4 are completely under the control of the operator and may be effected with great rapidity whereby the operation of compressing the bags to the density desired may4 be completed in a second, while at the same time destructive shocks are substantially eliminated. rlhe valve and cylinder organization is, moreover, readily accessible for any necessary purposes, such as renewing the valve faces, the piston elements, or the packing glands.

Having fully described my invention, I claim :l y

l. In a press of the type set forth, the combination ofrelatively movable coperating'heads for applying pressure, a bed plate over Vwhich the movable headoperates, a resting surface at the front of the bed plate upon which the package is formed, andl means vassociated with said plate in the rear of said resting surface and upon which a The orf ganization is such that when either of 'the9 l() of'said surface and upon Which a sheet of.V

i sheet of Wrapping paper may be held slightly spaced above said plate, as .and for the' purpose set forth. f

2. In a press rof the type set forth, the combination ofrelatively movable coperating heads for applying pressure, a bed plate over which the movable head operates, a V,resting surface at the front end of the plate and uponwhich the package is formed, and leaf springs overlying said plate in the rear Wrapping papermay be held slightly spaced above said plate, as and for the purposeset forth. `j Y 3.,Infa press of the type set forth, the combination of a fixed head and a movable head, the latter having a pressure applying element'for cooperation With the fixed head, means for projecting the movable head to- Ward the fixed head, a bed plate over which the movable head operates, a resting surface surface` and'upon which a sheet of Wrapping plying element in a plane at a constant angle to the plane ofthe bed plate, Y f

4. In a press of yhe type set forth, the combination of a fixed head and a movable head, the latter having a pressure applying element for coperation with the fixed head, means for projecting the movable head to- Ward the iixed head, a bed plate over Which Vthe movable head operates, a resting surface. at the front of the bed plateupon Which the.V packageis formed, means associated withV said plate in the rear .of said resting surface and upon Which a sheet of Wrapping paper may be held slightly spaced above said plate, and arms secured to and projecting rearward from the movable head at Veach side of the centerfthereof. and having sup-V porting engagement With the bedI plate, thereby positivelyto hold said pressure ap-4 plying element in arplane at a constant angle to the plane of ,the'bed plate. Y

In testimony whereof I` have hereunto set my hand in presence oftvvosubscribing Witnesses. Y Y

lWitnesses:

GLnNoovA BEAUDOIN THERESA M. KEENAN;

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