US1229512A - Box-feeding mechanism for box-wrapping machines. - Google Patents

Description

IVI. E. PETERS, G'. H. FMH (ILA. F.' MILLER. Box F'EEDING MECHANISM Fon Box WRAPPING MACHINES.

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M. E. PETERS,` G. H. FATH @L A. F. MILLER. BOX FEE'DING MECHA'NISM FOR BOX WRAP'PING MCHNES.

. APPucATmN mso APRza, 1916. 1,229,512..

Patented June 12, 1917.

MELVILLE E. PETERS, GEORGE rr. Earn, AND ALBERT r. MILLER, or DENVER,

COLORADO.

BOX-FEEDING NEECHANISM FOR BOXeWRAPPI'NG MACHINES.

Specification of Letters Patent.

Patented J une 12, 1917.,

Application led April 28, 1916. Serial No. 94,207.

To all fr/rom t may concern.' v

Be it known that we, MELVILLE E. PETERs, GEORGE H. FATE, and ALBERT F. MILLER, citizens of the United States of America, residing in the city and county of Denver and State of Colorado, have invented a new and useful BoXFeeding Mechanism for Box-Wrapping Machines, of which the following is a specification.

Our invention relates to an automatic box feeding mechanism for feeding unwrapped paste board boxes to box wrapping machines; and the objects of our invention are:

First, To provide a vfeeder for box wrapping machines in which the boxes are placed by an attendant, and which automatically feeds the boxes intermittently in registering relation to the box supporting plunger of a box wrapping machine. And

Second, To -provide an automatic box feeder that will feed straight sided and extension edge boxes either with or without stayed corners, to the box supporting plunger of box wrapping machines.

l/Ve attain these objects by the mechanism illustrated in the accompanying drawings, in which:

Figure 1, is a side view of a portion of a box wrapping machine, showing the application thereto of the improved automatic box feeder.

Fig. 2, is a central, vertical, transverse, sectional view through the machine and box feeding mechanism shown in Fig. 1.

Fig. 3, is a plan view of the box feeding mechanism.

Fig. 11, is a vertical sectional view, enlarged, on the line L -4l of Fig. 3. And

Fig. 5, is an end view of one of the box guide bars, showing the box stop mounted thereon.

Similar' letters of reference refer to similar parts throughout the several views.

Our box feeding mechanism can be arranged to be attached to any box wrapping machine. We have preferably illustrated it however attached to a fragmentV portion of the box wrapping machine illustrated in our pending application Serial Number 59,860, filed November 5, 1915.

Referring to the drawings,-'-

Fig. 1 designates our improved box feeding mechanism, and in this view as well as the other figures of the drawing the numeral 1 designates the base plate, 2 designates the end frames, 3 the side frames, and 4t a top table portion of the fragment of lthe wrapping machine above referred to.

Between the side frames a main driving shaft 5 is journal-ed in suitable bearings 6 that are secured to the base plate. This shaft extends longitudinally of the machine, and is adapted to be connected to and rotated by power supplying and transmitting mechanism, which we do not illustrate.

Upon the main shaft 5 we secure a cam 7, having a groove in which lies a roller 8 that is mounted on a yoke or fork end 9, which is bolted to the lower end of a lever 10. The fork end 9 stradles the main shaft 5 and the upper end of the lever 10 is secured by a bolt to a projection 11 adjacent to the lower end of a lever 12. The lower end of this lever is pivotally secured upon a stud secured to a bracket 13, which is bolted to the table. The upper end of this leveris pivotally'connected to one end of a link 14C, the opposite end of which is pivotally attached to a depending lug 15, that is secured to a slide bar 16 that is reciprocally mounted in a slideway 17 that is formed in a ribbed bar 18 that extends at right angles to the longitudinal axis of the box wrapping machine and from its upper and lower plungers 19 and 20 respectively.

This ribbed barv is supported upon and secured to a cross bar 21 that is secured at one end to a bracket 22 that is bolted to the top of thel table, and is supported by'a bracket 23 at its other end that is bolted to the yoke-shaped frame 24. The ribbed plate is provided with a shot 25 through which the lug 15 depends, and the slideway is formed partially in each of two opposite upwardly projectingribs that extend along its length. An adjustable flanged push bar 26 is secured upon the top yof the slide bar 16, by a bolt 27, which passes through a slot 28 in the push bar, and is screwed into the slide bar. To the forward end of the push bar 26, is secured a plate 29, the upper edge of which is backwardly curved, which permits an attendant to rapidly place the boxes with accuracy upon the slideway and against the said plate 29 without striking the top edge of it. This box pusher works reciprocally to feed a box-shell, which means a stayed or unstayed corned box ink an unwrapped conv ditiony to the upper' plunger of theV box wrapping machine, at each cycle of its operative movement, as will be fully kexplained plungers 19 and 20.

The cross bar 21 supportsv at its opposite ends guide bars 30, each of which is 1n tegrally connected to aslide block which is adjustably mounted on the said cross bar, by means of boltsf32, which pass through the said Vslide blocks and through slotsy 33 formed in the cross bars.

These guide bars 30 form the side gages for the boxes and they are adjustable to and from Vthe longitudinalY center of the slideway plate and its box pushing bar tolit boxes of varying lengths. They are consequently adjusted to receive the size of boxes that are to befed to theplunger loosely but snugly between them, and are then bolted in their' adjusted positions. To facilitatek the rapid and accurate placing of boxes one after the other by an attendant, the guide bars arek each provided along their upper edges with a backwardly curved blade 34:, which is secured to each guide bar by any suitable means. These guide bars and the slideway bar, are positioned in such relation to the upper plunger that the reciprocating' box pusher delivers them directly and centrally under the plunger, andr al stop 35 is adjustably secured on `the inner end of each guide bar against which the box is moved by the pusher bar. Each'stop comprises a yokeshaped member that straddles the top edge ofthe guide bar, and which present abutments which define the inward movement of the boxes relatively to the plunger's.

The guide bars 3() are each formed with a horizontal ledge 36, which ledges are on the same planev as the upper face of'tlie'slideway bar 18, and form'with the said slideway bar supporting means for the boxes, as Awill be clearly understood by reference to Fig. l. Our box feeding mechanism Vwill feed either plain, straight sided boxes, orextensionedge boxes,` having either .stayed orun stayed corners, and the guide bars extend along the opposite ends of the` plunger and guide the boxes centrally to it. The'ledges 36 are only slightly longer than the width of the largest box for which the machine is set; and it is therefore necessary that means be provided for supporting theYV boxes v'in a` position between` the two plungers, and that suoli supports be capable of beingv auto` matically withdrawn, in order that the boxes may be carried down' with the upper plunger, to rpass betweenthe sidewipers; sup'- ports 'of this character being necessary in the case of extension edge boxes, where if presplane,`and at righty yangles to and centrally of the length of the tension ofthe springs is secured on top of and sure upon the boxes were requiredY to spread the supports, the extended edges would thereby be broken.

To'this end, we provide each of the guide bars 30 with two integral brackets 37, the

upper ends of which are pro vided with beari 'A lever 40 ismountedfon each shaft 38 between'its opposite end 'is 'adjustably other is secured to ther `secured to the slottedend vof aV slotted bar ll by a clamping bolt 42. f

. Each slotted bar is provided at its inner end with a roller 43 whichwhen the plunger 19 is at the limit ofits 'upperstrolre bears against itsy adjacent ends, andthe slot allows for adjustment of the 'fbarrelative to the length. of described. i f Y f s To "the opposite end portions of the shafts 38 inside thebearings 37,' levers at1l`are'-secured, the lower ends secured to one of theends `of a pair of links 45, the opposite endsof which are pivotally plunger as'will be presently securedy to opposite ends of blades 4G, which are reciprocally supported in slots' "47 formed` through each :of the guide Ybars 30. The rollers 43 bear on oppositeends of the plunger when it is at the limit of Vits up stroke, and the said yrollers are automatically held against :the ends ofthe plunger by the 39. A cam" 'blade 43 at each end ofthe upper plungeigand the springs 39'are arranged to exert aitension on the rshaft that turns it to cause the'rollers of the bar to bear with a resilient pressure against theopposite-ends ofthe plunger, and as long as the rollers are-fon the plunger the blades are held inward beneath the bottom of the box, and `thus supporty the'said'boxes. As the plunger moves down it enters theV box and when it gets within about a quarter of an inch of its inside bottom surface, the rollers 43 'on the bars tlf ride ontothe backwardly An' attendantplaces theun'covered boxesone at a timeon the supports formedfby the ledges 3G and the slidew' front of and vagainst the box 'pushing 'blade 29. Then' the 'reciprocating boxpl'isher blade, `which is tuned by 4theranfand lever of. which are pivotally j ay bar, bet'weeii the side blades 34 and the' guide b'a'rs 30,' and in mechanism, moves each box under the upper plunger 19 of the first stage treatment station of the box wrapping machine, just as it reaches the limit of the upper stroke of its vertical reciprocating movement, and the stops 35 stop each box in its proper position for the upper plunger to enter it when it starts on its down stroke, Which it does, and

carries it down against the gummed blank and the top-of the lower plunger.

Having describedmy invention, what We claim as new and desire to secure by Letters lhitent, is:

1. In an automatic box feeding mechanism, the combination with the box receiv ing plunger of a box Wrapping machine, of a box supporting guideway, and means including a cani and rock arm actuated reciprocating plate for intermittently moving a box along said guideway to said plunger, and means including adjustable stop and box centering guides for guiding each box into the path of said plunger, and means including a reciprocating and `resilient box supporting lip` mechanism actuated to support a box in alinement With said plunger by engagement therewith.

2. In a box feeder for box Wrapping machines, the combination with the plunger, of the box receiving slidevvay, the boxpushing plunger arranged to reciprocate therein, resilient controlled reciprocal means including an extension edge supporting shelf for protecting the overhanging edges of extension edge boxes, and means including box stopping guiding and centering guides for directing each box into the path of said plunger'.

3. In a box feeder for box Wrapping machines, the combination With the plunger, of the box receiving slideivay, the box pushing plunger arranged to reciprocate therein, and resilient controlled reciprocal means including an extension edge supporting shelf for protecting the overhanging edges of extension edge boxes, said means also including a bearing plate on said plunger and an adjustable plunger engaging guide arm and roller arranged to control the reciprocal movements of said extension edge supporting shelf.

4. In a box feeder for box Wrapping machines, the combination with the plunger, of the box receiving slidevvay, the box pushing plunger arranged to reciprocate therein, and resilient controlled reciprocal means including an extension edge supporting shelf for protecting the overhanging edges of extension edge boxes, said means also includ ing a bearing plate on said plunger and an adjustable plunger engaging guide arm and roller arranged to control the reciprocal movements of said extension edge supporting shelf, and cam actuated means for operating said box pushing plate.

5. In` an automatic box feeding mechanism for box wrapping machines, the coinbination of the table frame and the upper plunger, with a box feeding mechanism comprising a guideway adapted to receive boxes, and a box pushing reciprocal mechanism arranged to deliver' boxes one at a time under said upper plunger, and means including resilient guides for supporting the box belovvl the plunger and for releasing said box when said plunger enters it on the downward stroke of its reciprocal movement.

6. In an automatic box feeding mechanism for box Wrapping machines, the combination of the table frame and the upper plunger, With a box feeding mechanism comprising a guideway adapted to receive boxes, a box pushing reciprocal mechanism arranged to deliver boxes one at a time under said upper plunger', and means including a pair of reciprocating cam and spring controlled blades attached to said guide frame for supporting and feeding extension edge boxes to said upper plunger.

7. In an automatic box feeding device for box Wrapping machines, the combination with the table frame, the upper plunger provided With a reciprocal movement, of a box receiving guideivay, the guides at the side of said guidevvay for receiving the box, the slideway in said guidevvay, the crosshead reciprocally mounted in said slideway, provided with a box pushing blade, the cam actuated rock arm and link mechanism for operating said mechanism, and means including adjustable box end engaging stops and resilient box supporting side guides arranged to support each box in the path of said plunger and to release each box after said plunger enters it.

8. In an automatic box feeder for box Wrapping machines, the combination with the table frame, the upper plunger, of a box receiving guideway, the guides at the side of said guideway for receiving the box, the slideivay in said guideway, the cross-head reciprocally mounted in said slideway, provided With a box pushing blade, the cam actuated mechanism for operating said mechanism, and means including cam blades on said plunger and an adjustable stroke spring actuated lever and shaft controlled extension edge supporting blade for supporting extension edge boxes as said plunger enters them on its box engaging and feeding stroke.

9. The combination with a box Wrapping machine having a reciprocating box receiving plunger, of means for deliverying boxes to a point in the path of said plunger comprising a support, parallel guidevvays on said support, an automatically operating box pusher on said support, oppositely arranged box supporting ledges mounted in said guidevvays in the path of said plunger,

and means operated by lthe plunger for withdrawing said ledges after the plunger enters the box.

l0. The combination with a box wrapping Inachine having a reciprocating plunger, of means for delivering unwrapped boxes to a point in the path kof the downward movement of said plunger, comprising a support mounted on, said machine, an automatically operatino` box pusher on said support, parallel guide barsadjustably mounted on said support and extending beneath but out of the path of the ends of said plunger, oppositely disposed box supporting ledges lslidably mounted in said guide 'bars in the path of said plunger, and means operated by said plunger, for withdrawing said ledgesafter the plunger enters a box. Y

11. The combination with a box wrapping machine having a reciprocating box receiving plunger, of means for delivering unwrapped boxes to a point in the path of the downward movement of said plunger, comprising a horizontal support on said machine,-parallel guide bars mounted on said support and lateral-ly adjustable with, respect to each other, said bars extending be- Vlow the'plunger but out of the path of its ends, oppositely positioned box supporting ledges slidablymounted in said guide bars and normallyprojected into the path of said plunger, a box pusher slidably mounted on said support between said guide bars, a cam and lever mechanism for sliding sai-dv pusher to deliver boxes to saidledges, stops'on said guides to define the movement or saidV boxes,Y

and spring controlled lever mechanism operatedy by said plunger to withdraw said `h ledges afterthe plunger enters a box.

12. The combination with a box wrapping machine having a reciprocating box. receiving plunger, of a support secured to said machine, laterally adjustable parallel horizontal guide bars mounted on saidV support, below the uppermost position yof Vsaid plunger, and Vspaced to permit said plunger to pass between them, on its downward moveledges, springs -for normally holding saidl rollers in contact with the ends of the plunf ger, and inclined plates on the upper edges of the ends of said kplunger in the path of said rollers, whichr permit an inwardy movenient ofthe roller carrying arms and the consequent rocking of thev upright arms,v as the plungerenters the box, whereby the ydepending arms are operated to withdraw the ledges from beneath the box. 13. The` combination with a box wrapping machine having a reciprocating box receiving plunger,-of a guideway extendingv across the path yof said plunger, opposite box sup:` ports injsaid guideway normally projected into the path of the downward movement of said plunger, automatically operating means for delivering boxes to saidsupport, stops for defining the movement of said boxes,l

and levers operatedl by said plunger on its downward movement for retracting said box supports afiterl the plunger enters they In testimonywhereof wealix our signatures kin presence-of two witnesses;

MELvILLE rE'rEas. t .GEORGE yEarn.,

ALBERT E. MILLER.

Witnesses:

G'. SARGENT ELLIOTT, ELIZABETH SMITH.

Copies of this patent may be obtained for-inve cents each,tby addressing-the Commissioner of- Patents.

4 Washington, D. (3.,V i

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