US1251813A - First-stage treatment for box-wrapping machines. - Google Patents

Description

M. E. PETERS G. H. FATH & A. F. MILLER. FIRST STAGE TREATMENT FOR BOX WRAPPING MACHINES.

APPL ICATIO N FILED SEPT-25. 1916. 1,251,813.

Patented Jan. 1, 1918.

5 SHEETS-SHEET I.

M. E. PETERS, G. H. FATH & A. F. MILLER. FIRST STAGE TREATMENT FOR BOX WRAPPING MACHINES.

Patented Jan. 1, 1918;

5 SHEETS-SHEET 2:

APPLICATION FlLED SEPT- 25, l9 I 6 M. E. PETERS, G. H. FATR & A. F. MILLER. FIRST STAGE TREATMENT FOR BOX WRAPPING MACHINES.

APPLICATION FILED SEPT. 1916.

Patented Jan. 1, 1918.

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M- E- PETEHS, G. H. FATH & A. F. MILLER.

FIRST STAGE TREATMENT FOR BOX WRAPPING MACHINES.

' APPLICATION FILED SEPT- 25. 1916- 1,251,813, Patented Jan. 1, 191&

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M. E. PETERS, e. H. FATH & F. MILLER. FIRST STAGE TREATMENT FOR BOX WRAPPING MACHINES.

. I APPLICATION FILED SEPT- 25, T T fi- 1,251,813. Patented Jan. 1 ,1918.

5 SHEETS-SHEET 5.

s 'Ar MELVILLEiE. PETERS, GEORGE H. BATH, AND ALBERT F. MILLER, lornnnyvnn, COLO- RADO; ASSIGNORSITU riinrn'rnns EATENT RIGHTS COMPANY, on nnnvnn, COLO- .RADO, .A-..CORP.ORATIONJ 0E,- COLQRADO.

F nsms'rAcE ,rnnn'rrannr, on BO -WRAPBING, inseam-es.

s pecification of LettersPatentf Patented Jan-.1, 1918,.

Original application filed November 5, 1915,3eria1 No. 59,860. 1 Divided and this application filed September 25, 1916. Serial No. 122,054.

To all whom it mag concern:

Be it known that We, MELVILLE E. PETnRs, GEORGE H. FATH, and ALBE T FJMILIJJR, citizens of the United States of America, residing at the city and county of Denver 'and'State of Colorado,- have invented anew and useful First-Stage Treatment-for-Boxis a speci cation. I

Our invention relatesto improvements in first stage box and blank unitin and partially wrapping mechanismfor box Wrapping machines; and the objects of ourjinvention are: p a

First, to provide means for receivi'nq and positioninggummed blanks and pasteboard VVrappin Machines, of WhlCli'tll e fOllOWlIlg.

box shells onverticallyreciprocatino phingers, in such operative relation to eac 1 other as will enable said plunger's to so manipulate the box andblank that 'the-bottom of each box Will be glued to gummed surface of each cooperating blank. 7

Second, to provide means whereby said plunger cooperates with non-vertically movingside" and corner wiper mechanism to Wrap each blank against the opposite sides and corners otits cooperating-box. And

Third, to providea first stagebox and blank uniting and partially Wrapping box Wrapping machine in Which automatic means is provided for wrappingthe bottom, sides, corners and ends ofboXes with printedor unprinted blanks or labels, and 'for discharging them from the wrapping mechanism, the box-and blank operating mechanism being'especi'ally adapted to produce a machine that will partially Wrap a larger number of boxes per minute than those at present in use.- p r Our present invention relates tomechanism for partially Wrapping'gummed blanks around a box and appertains tothe coo'perative actlons of two, varlable strokevert1- cally alined and movable plungers that-carry the blank and box' down through non-vertically' movable-sidewipers that are provided with a cooperating resiliently yielding and cushioning pressure lateral movement.

Consequently our present invention effects only; thepartialwrappingof a box. by and With a gumnied blank. The mechanism of our present invention can be seen; cooperatively combined in a. complete box? Wrapping machine that forms the subj cot-matter .of our pending application b'erial' No.

59,860 filed November 5, 1915, and: our present application is a divisional part: thereof.

We consequent-1y attain these objects'by the mechanism illustrated in:theaccompanying drawings, in which:

Figure 1, is a slde elevationof a portion Fig. 2, isfan' e delevation of the table portion of the machine, showing the side of a box Wrapping machine, illustrating the first stage treatment mechanism.

"Wiper-s, the end' turn-in blades and mecha- \111SII1' by v'vhich-these parts are operated.

Fig. 3, is a vertical, longitudinal sectional view of the portion ofthe machine shown-in Fig. 1, illustrating'the relative positions or the side and 'end Wipers, and their connecin connection With extension'bott'om boxes.

Fig. 8, is an end'vi'ew of Fig. 6. i v Fig. 9, is aplan view of'a portion of. the

bed plate of the machineshowi'ng; more particularly the cam operated levers which "are employ ed in operatingthe side Wipers 1n wrapplng ordinary boxesor those having an extension bottom, together With the shifting lever-for locking ther'equired camoperated lever'to a rock shaft.

' Fig. 10,- is a front view ofthe supporting and operating mechanism for the upper plunger or, DOX form. i

. p '95 Fig, 11', is a side, elevation ofpart of the Fig.7, isaside view of th'e device carried by the side wiper support,and}-Which is used mechanism shown in Fig. 10, the boxform being broken away to show the box stripper.

' And Fig. 12, is a horizontal sectional view, enlarged, showing the upper plunger bar and its slideway, the box stripper rod, and the latch for locking the stripper bar to the slideway head block. P

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

Referring to the drawings The numeral 1 vdesignates a supporting frame, which preferably is of box shape,

but which if desired may be of-any other practical shape. The supporting frame however as illustrated consists of a base plate. 2, opposite, side plates 8 projecting upward from the base plate, and a top flat table portion 4. p

Through the center of the table Portion-4L of the machine, an aperture is formed, in which a vertical plunger bar 5 is reciprocally mounted in adjustable slideway bearings 6 that are attachedto the upper side of the table portion 4 of the frame. The lower end of this bar is connected to the upper end of a cam fork 7, the lower end of which engages a cam disk 8 that is secured on the main driving shaft. 9 of the machine. The upper end of the plunger bar is provided with a flange 10 that is secured to a block 11 of wood or other suitable material that is made of the size and width of the bottoms of the particular sizes of box that are to be pressed against it. The top surface of this block is covered by a cushion of leather 12 or other suitable material, against which the bottoms of the boxes rest.

Our plunger and side and corner mechanism will partially cover or wrap boxes of from about 3 inches long by 1 inch wide by s} inch deep, up to boxes of about 14 inches long by 8 inches wide by 3 inches deep, but each different size of box must have aplunger block 11 that will fit itseutside bottom length and width dimensions, as each blank rests centrally on top of this block and each box is fed to rest centrally on the blank and to rest also centrally on the top of the block, which forms a movable support for the blanks andthe boxes.

Above this lower plunger block and in vertical axial alinement with it, an upper plunger bar 13 is reciprocally mounted in suitable slideway' bearings 1i that are formed in an overhanging bracket arm 15 which is secured to the box frame of the machine. The lower end of this plunger'bar is provided with a block 16 which we term a box form, as it is made enough smaller than the box and the block 11 of the lower plunger to fit snugly inside of the boxes.

The boxes are fed automatically centrally over the top of the blanks andin that position the upper plungers box form descends directly into the box against its bottom and presses the bottom of the box down tight plunger block first'receives the blank and v the box shell is the highest point or center of its vertical reciprocal movement. Conse- V quently whenthe upper plunger form descends intothe box against its bottom, it

instantly presses it and the blank against the block of the lower plunger, which forms an abutment to the pressure of the form of the upper plunger of suihcient resistance to glue the bottom of the box to the gummed surface of the blank upon which the box rests.

The lower plunger, is then drawn downby its cam and is forced down between theside wipers 17, and as these two plungersmove down together the upper plunger which is arranged to, move slightly faster than the lower plunger bears andconsequently crowds down against it and thus holds the bottom with aconstant pressure against the top of.-

the lower plunger, and as the lower plunger moves slower onits down stroke than the upper plunger, the upper plunger in order to yield to theslower down movement of the lowe'r plunger is provided with a coiled spring 18, which is mountedon a bolt 19.-

This bolt is provided with an eye 20 that. is screwed upon the bolt. This eye 20 is loosely mounted on a-stud bolt 21 which is threaded "n into the side of the reciprocal plunger bar 18. The opposite end of the spring provided bolt is provided with a pin 22 against which a washer 23 bears, and the spring 18 is mounted on the bolt and bears resiliently at one end against the washer and at its opposite end against the under side of one end of an eye bolt 24, that is loosely; mounted on the bolt 19 and which is held under adjusted tension on the bolt by two nuts 25 which are screwed down against the eye bolt;

and enough farther to cause the eye bolt to compress the spring until the eye bolt and the reciprocating plunger bar are under the desired tension. The eye bolt is provided lug that forms the terminal end of alever 26, the opposite end of which is pivotally secured to a yoke 27 that is formed on an arm portion 28 of ayoke-shaped frame 29 which with a threaded stud portion that extends; loosely through andis secured by a nut to a a rod 30, one end of which is provided with g a yoke lug 3lwhich straddlesithe lever and a pivotal bolt 32 'is extended through both the lug 31and the lever. The lever has-an elongated slot 33 and the pin 32 carries a mamas roller 34 which engages the'edges of the slot, as the lever is raised and lowered, the-said slot-permitting; the vertical movement of the rod 30, as will be understood. The opplosite end of this rodis connected to a lever 35, whichis arranged to be engagedby a cam 36, that is formed on a. disk 37 which is secured on the main driving shaft 9. This main driving .pshaft is positioned ,in the box frame above the base plate and: it extends alongthe center ofthe width and throughout its length and it is journaled in boxes 38, that are secured to the base plate.

The oppositely arranged side wipers-17 that/turn the upper ends of the sides of the gummed blanks up against the boxes are mounted on two stationary cross'head brackets' 39 that are secured to the top of thetable portion; of the frame, and they arearranged on opposite sides of 'the box supporting plungers 11 and 16. These side wipersgpref erably consist of pieces ofwood, the. blank engaging faces of which are covered'with strips of felt 40 or other suitable material which is glued or is otherwise secured'to each wiper. These wipers are removably-secured to projections 41 that are formed on cross heads'42 that are slidably mounted in 'slideways that are formed-in the b'ra'ckets 39. There are two of these brackets, one on each'sideof the upper and lower plungers,

and thesetwo plun'gers reciprocally carry. each box and blank between these side wipers. These side brackets are positioned *parallel with the longitudinal length of. the

box wrapping machine, and are secured" to the top of the tableportion of the. frame. These brackets we term the side cross head brackets. These brackets have a central standard portion and two laterally extending Wing portions 43, as will beseen byrei .erence to Figs. 1, 2, 3 and 4. They eachsupport one side and two endwrapping. mechanisms. The under slde ofeach cross head 18 providedwith a gear toothed rack portion 44,'which isengaged by a toothed. segment portion45 that is formed on one end of a rockarm 46. These rock arms'yarepivotally secured to the brackets and their opposite ends are provided w1th-p1votal eye bolt-s47, through which vertically positioned rodsq48 pass loosely. A co1lar:49 is secured on each rod by a set screw, and anexpansive spring .50 is mounted-0n the rod between the collar andthe eye bolt 47. Theupper end i of each rod is threaded and a collar 51 is pinned to it, which engages the eye bolt47 on-thedownward movement of the rod 48.

. The rods 48 extend .down through bosses 52 on the brackets 39, and through thetable, and reston the ends of a bar 53,,the central :portion of which is secured. to a vertical plunger 54 that is reciprocally mounted in a slideway formed in atransverse; bracket .55,

that is bolted to the sides of the frame. The

the ar1ns 61 and66 together, while'the arm 6'5fis disconnected from the arm 60. The arm 60 and its actuating cam face '62' operthe cam shaft 1 Betweenithe armsGO'and '61'and also rigidly mounted on' the shaft '58 are inte'grally, connected short arms65 and 1 66, th'e inner, ends of" which are provided with holes, which are'in line'with correspond- 8-0 mg. holes in the arms 60 and 61 A hand le- :ver 67 is mountedfonthe hub portion of the I armsjfiii and 66, and its -fori'vard 'en'd iszpiv o'tallyfattachedfto a locking pin 6'8, which is slidably,mountedlin the inner ends of the short arms 65'and66. Thelocking'pin is of I such a length that when thelever 67 is shifted"1nth'e direction of the arrow, the said Pi piroj cctsthrou gh the "hole "in the arm16'6 and intothehol in the arm-61, thus'locking'90 ate in connection with boxes ofthe' ordinary type, w'hile the arm 61 and its actuating'cam face" 68 operate in connection" with boxes havlng 'GX CGIISIOTI bQttOIIIS', the respective cam grooves being'arranged to that end.

' Thus when boxes ofthe usual type are "being.

covered, the arm'6l'is notneeded, and when extension bottomfb'oxes'arebeing covered the garm 60is'out of commission; Therefore, 7 when'bo-xes of the usual type are being cove "cred, the short arm 65" 'is'vlocked tozthe arm '.'60 by shiftingflever '67,and its 'loc'king'pin 68,.an'd when the" arm: 60 is operated by its cam 62, a' corresponding movement isim- [parted to the short arm 65, which islocked togthe arm 60 by the "pin 68, and as the arm 65' is'j'rigidly =connectedto; the shaft 58, the

said shaft is turned-thereby. and thearm 57, which is also rigidly attached to the shaft 58', is rocked,.andimovement is thus trans- -m itted'ftotheplungeriarm 54 through the medium oftlie lin'k'56. T The arm 161' will"be- 1 15 1 rockedby its cam 63,'b'ut it will performno function s n is'not lockedto the "shaft .58; l

Collars '69 are' secured upon the'lower portionsfof the rods 48, and'between thesecol-' larsandjthe lower ends of the bosses- 52, are interposed coiled springs 70, which act to depress the' rods 48, after they have been raisedand then released by the cross bar 53. The vertical movement of the rods 48 ca'usestheir collars to compress the springs'125 some raise: the rock arm46, which causes thetoothed endsofthe rock arms which engage "the rackbar44 of the cross head 42 to move the wiper blocks against the sides of f the blank and box, and holdit there with a ;1 0

\ provided with a pair of horizontally positioned cylinders 71 that depend fromit. These cylinders are provided with solid head portions at one end and have nuts 7 72 threaded into them at their opposite ends. Axial apertures are formed through the heads and nuts, in which stems 73 are reciprocally mounted, and expansive coiled springs 7 surround the stems. The stems are provided with shoulders in the cylinder against. which washers 75 rest' that receive the thrust ofone end of the springs when the stems are moved back through the cylinder by mechanism that is attached to their front ends, and the springs'move the stems out forwardly by their expansive tension when the stems are released from backward pressure. A nut is threaded to the outer end of each stem, by which the tension. of the spring can be regulated as desired. The outer ends of each pair of stems are threaded into a clip 76, see Figs. 2, 5, and 7, that is provided with a transverse pin 77, upon which is mounted a horizontal rock plate 78, having a depending bifurcated arm 79 in which is mounteda roller 80. roller is designed to be engaged by one end of a rock arm 81, which is pivotally secured intermediate of its ends to a support 82, which is bolted tothe inner face of the bracket 39. The opposite end of the rock arm is connected to a spring 83, which is attached at its opposite end to a pin Set projecting from the bracket 39. The plate 78 has a forwardly projecting blade 85 secured upon its upper face. The pin 77 'hasa surrounding coil spring 86, one end of which engages the clip 76 while its other end enters a collar on the end of the pin 77. This spring normally holds the blade and its supporting plate 78 tilted upwardly, in which position it ismoved against the box and over its extension lip. As the cylinders 71 move inward with the blocks 17, the roller 80 engages the arm 81, and the plate is ti ted and the blade engages the blank and presses it down against the extension portion of the box, the spring 83 affording a compensating movement for the blade against the box, the blades yielding backwardly from it when the cylinders and the block 17 continue slightly. farther toward blank around the box in tight wrap work is This wipers for each side of the box.

shaft.

the box to complete their stroke. This arrangement allows the blade to engage the box with a resilient pressure. The roller 80 engages the rock arm 81' as the cylinder moves forward and tilts the plate and its blade downwardly against the tension of the spring 83 so that the blade exerts adown gvard pressure on the extension lip of the We will now leave the description of th 75 extension wrap mechanism and return to the description of the tight wrap work mechanism. v

The next step treatment of wrapping the 80 performed by the, corner wipers 87. These corner wipers are used to wrap the end portions of the sides of the blank around the corners of the box as shown in Fig. 4:, just of which is secured to a collar 92 on the lower end of the pin and the other end of the spring is secured to the adjacent lug 88. Each block 89 is tiltingly secured to the end of a toothed rack bar 93 by apin 94:

and this block is also tiltingly secured by a pin 95 to a similar rack bar 96. The two bars 93 and 96are mounted parallel to each other in a slideway bracket 97 that is ad:

justably secured in slots 98 that are formed in each end portion of the bracket 39 by bolts-99, there being two sets of these corner 1 Each toothed rack bar 93 is engaged by a gear 100 that is provided with side trunnions that are mounted in bearings 101 that are formed in the sides of the slideway bracket 97. Each bracket 39 is provided with bearings 102 at its ends, in which are mounted'square shafts 103 having round bushings which turn in the said bearings 102, and upon the respective shafts are 'slidably mounted the gear wheels 100, two gear wheels being on each The gear wheels occupy the 'posi tion shown in Fig. 4, or in other words mesh with the toothed bars 93, when tight wrap boxes are passed through the machine, and for loose wrap boxes, the gears 100 are shifted to engage the toothed bars 96. The gears have short trunnions, one of which enters the opening in the adjacent side of the slideway bracket when the gear is in meshwith the toothed bar 93, while the other trunnion enters the opening in the other side of the bracket 97 when the gear is in mesh with the'toothed bar 96. The slideway is formed witha central partition 130 55 the corner of the'box, owing tothe conseiii-mesh with'eitlier ofthe toothed'bars 93- web 104, which separates the toothed bars 93 and 96,- the said web having a semi circular recess topermit of thelateral shifting of the gear wheels 100. U'pon'theouterend of the partition'web of each sli'deway'is secured 21 blade spring 105 having a curved portion, which, when the gear wheel 100 is or 96, isadapted to bear uponthe adjacent trunnion ,of the saidgea-r -wheel,' and thus preventilateral shifting of the same, as will be understood by reference to Fig; 4. Each of the "square shafts 103 -is rotated by a gear 106 that is mounted on its forward end and which is driven by a vertically l disposed toothed rack portion that is formed on i a bar 1075 that is slidably mounted at its upper end in slideways' 108 that are formed in the adjacent ends of the cross head bracket 89; The lower end of this rack bar is adjustably secured'to a vertically reciprocating cross head bracket 109. The slots 110 in the lower end of the rackbarwhere it connectswith the ends of the reciprocal cross head bracket permit of vertical adjustment of the-rack bar.

The reciprocating bar 93 is moved bya slight throw movement of the vertical upa stroke of the cross'head 109 and the vertical rack bar 107 and by itspi-nion 106 and-the pinion 100, against the corner ofthe blank and the corner of the box, which throw movement is sutficient to-tiltingly compress the wiper against its abutment-spring as the wiper moves against and over the corner-of the boxagainst its adjacent edges withsulficientresilient pressure to firmly glue the corners o'fthe blanktothe corners of the box. r ifter. the corner wiper has pressed the corner of the blank againstt-he corner of the box, itis thrown back away from the' box by the frictional engagement of the sliding bar 96with its SllClWay,Wh1Ch21CtSj to accomplish this throw movement of the wiper in the following manner: The spring 91 normally holds the wiper in the position shown in Fig. 4, but the block 89 is slightly't-ilted on both-its inward and'outwa'rd movement by the frictionalengagementof the tooth bar not operated by the gear 1'0O, -with its slideway' 11] the present instance, the bar 93' is engagedby the gear and the baris moved'outward or away from the box. The

pull on the-bar 93 by thegear wheel will cause the block to tilt outward or away from quent dragging movement of the bar96 upon which an indirect pull is exerted. Thus when the block 89, and its wiper 87 start forward or towarda box, the wiper is thrown out slightly, but the initial movement' of the bar 93 tilts the block 89, owing to the indirect pull on the bar 96, and consecorner wiper to tilt against the box as the wiperstarts across the end cornenot' the box, and the bar not operated by: the gear 100 causes the wiper to tilt away from: the box after it has completed its corner label wraps ping str-oke. :The reciprocating cross :heads 1091rec'iprocate the: rack bars-1 07? that rotate the pinions 106 and shaft 108. that through the medium of the gears- 100 reciprocate, the bars =-98, which move the wipers torand from and across the surface: of the cornerends of the bOX.'d-t all'four ofits corners, and'leave I 1 the end 'sl o'f the blank glued to the ends of thebox. 9 -Loose-wrap1blanks are not providedwith against the ends ofrthe box ias in the manner of: the tightwra'p blank, *a-slight portion: of their' surtaces near? their outer. ends having been gummed duringthe :gumming process,

by which the endifflapisheldagainst the box until it reaches thesecond stage position. It will thius bewseenzthat ifthe corner wipers were: permittedto engage the end flaps ofva loose wrap blank on their :inward movements,-the edges ot the blank wouldbe drawn aavay fromz the corners oftherboxin such a manner as to: crumple: and thereby-spoil the said: end: flap. Toxobvia-te this action when performrngloose wrapiwork, thepinions 100 on. thefshafts =103 are shiftedhtot engage the rack bars- 96, so t-hat whenthe rack bars '93 V and 96 are moved inwarcha direct push-is" exertedcon'therackbarsi 9.6, while the rack bars: 93 drag 1n their sli'dewayc-owing to the indirect pusln exerted uponthem. This 210- i tion tilts l the" blocks 89, which throws f the wipers =87: out i and 1 away 'from the; ends of the boxwand maintains them thus during their inward movement. But the instant the reverse or outward movement of-the-wipers commences, the'direct. pull on. thea'aclr bars 96, andthe-consequentdragging of thehars 93 causes th blocks 89toabe tilted in the'op posite direct-ion, by which the wipers 87:;are caused: to engagei the endfiaps and: 'beari resiliently; upon them Wl'lllG thevsaid wipers of wrapping the :blank aroundtheuboxis given: by the-end wipers whichra'ct simultaneously against the opposite ends ofithe' blank: andzwrap them up: againstyand glue them to the oppositeends ofthe box:

The 'end wwipers 111 are designed .to engage the'central portions of the, ends of the blanks :and wipingly press them up: against a the ends'rof tl16b0X'-=Sh6ll,;2aIld as theyndo this they rfoldiand press thexendsaof'athe 'blanks over. thercorners-aof the blanlgiwhich havejust been glued tostheccorners of the ered with a strip of felt 112 and each wiper is clampedto a step of a sliding block 113 bya cap 114 and a bolt 115. The sliding block 113 is slidingly mounted in a T slot that is formed in the top of a head block 116 that is pivotally secured by two pins 117 to one of the ends of two reciprocating bars118 and 119. Each of these bars is reciprocally mounted in slideways formed in a bracket 120 which is adjustably mounted upon a slotted plate 121 by a bolt 122. This slotted plate 121 is slidably mountedin the table top 4. The vertical rack bar 118 of each end wiper is reciprocated as follows. A pinion 123 is provided with trunnions which are rotatively mounted in bearings 124 formed in the brackets 120, and a square shaft 125 is extended loosely through the pinions of both brackets. This shaft is provided at its outer end with a pinion 126 that meshes with a rack bar 127 which is slidably mounted in bearings 128 and 129 that are formed on a bracket 130, which is secured to the end of the table. The lower end of this rack bar 127 is connected to one end of a reach rod 131, the opposite end of which is connected to the upper end of a forked lever 132, the opposite forked end of which straddles the main shaft. This lever is provided with a roller 133, that engages a cam 134 which imparts a reciprocal movement to said rack bar, and rotates the pinion 126 which turns the square shaft 125 and the pinions 123 that raise the rack bars 118 which tilt the head blocks 116 on their pins and cause their wipers 111 to tilt against the adjacent end of the blank and box, the instant the rack bars 118 are started upwardly by the pinions 123. Each tilting block tilts on the pin 117 toward the box, which throws the wiper 111 against the box and the tilting of the head block is accomplished by the dragging action of the bar 119, which is held in its slideway by a friction pressure which may be applied to it in any suitable manner but which I preferably create by a friction button 135 which is mounted loosely in the bracket and is held by a spring 136 against the said bar 119 with suflicient adjustable pressure to cause the bar to fit tight enough to hold the tilting block down in its tilted position. The pinions as they are rotated by the square shaft raise the rack bars and cause the wipers 111 to rubbingly bear against the end of the blank and box and to move upwardly across its adjacent ends to its top edge, and thus firmly glue the blank to the box over the top of the corners of the blank that were just an instant before glued to the corners of the box. The end wipers bear against the ends of the box with a resiliently yieldingpressure, which is imparted to each of them by an expansive spring 137 which is mounted on a pin 138 that is extended loosely through an arm 139 formed on the head block 116, and is threaded into the sliding block 113. The forward throw stroke of the head block 116 is greater than that necessary to move the wiper against the box so that the block 113 slides on the head block 116 after the wiper has been moved against the end of the box. blocks 111 press'the ends of the blanks with ayielding pressure against the opposite ends of the box. The instant the wipers have moved up over the ends of the box, the cam 134 reverses the movement of the rack bar 127 and the direction of the rotary movement of the pinion 123, causing the rack bars 118 to move downward and at the instant they start down they pull down on the pins 117, which cause the head blocks to tilt on their pins of the bars 119 and this tilting movement of the blocks on their pins causes the wipers 111 to move far enough away from the ends of the box to entirely leave the same for about a sixteenth of an inch, and the friction bars 119 hold the tilt ing blocks in that position as they bear with a friction fit in their slideways tight enough to cause the rack bars to have to pull down on the head blocks with a sufficient pressure Consequently the wiper to hold the blocks in their thrown back bolted to the bracket 130. A rod 142 extends through this cup and its lower end is threaded and provided with nuts which strike the bottom of the cup and define the stroke of the rod. The upper end of this rod engages the under edge of an arm 143 that is secured to the side of the rack bar 127. The spring 140 is an expansive tension spring and its lower end rests against. the bottom of the cup 141 while its upper end bears against a cap 144 that is slidably mounted in the cup and is secured to the rod 142.

The arrangement of the rack bar 127 with respect to the reach bar 131, as shown in Figs. 1, and 3, is for wrapping ordinary boxes or such as are not provided with extension bottoms. The rack bar 127 is provided at its lower portion with a slot 145 and a block 146 is bolted to the upper end of the bar 131, and is provided with a recess in which rests the lower end of the rack bar resi ts 1'27, and the bar is held within the recess'by a cap 147. A pin 148 passes through the lower end of the rack bar 127 and bears against the lower'end of the block 146, and an adjustable block 149 bears against the upper end ofthe block 146, and is secured to the rack barby a bolt 150 which passes through the slot 145. Thus arranged, the cam fork 132, the reach bar 131 and the rack bar 127 move'in unison as will be'understood, and with theseparts thus arranged, as "shown by Fig. 3, the end wipersere raised high enough to accomplish the end wiping of boxes of the greatest depth for which the machine is set. In wrapping boxes of lessdepth, however, the rackibar 127 must have a shorter stroke .in' order, to diminish the rotative travel of the gear wheels 123,'and to accomplish this, the adjustable block is moved up a suitable distance above the block 146, and is firmly clamped to the rack bar byfits bolt 150. Thus the movement of the cam 134 "will raise the reach bar a short distance before theblock 146 engages the block 149, after which the rack bar and reach bar move up'in unison. It is necessary however that the rack bar should start to move upward simultaneously with the reach bar and move far enough to raise the end wipers 111 from the positions shown in Fig. 3, to a position where their under sides are on a plane with the upper faceof the lower plunger; and this is accomplished by the spring 140, which lifts the rod 142, the upper end of which engages and exerts an upward pressure against the projection 143, on the rack bar 127, by which the pin 148 in the lower end of the rack bar is held in engagement with the block 146 of the reach bar, and the rack bar, through the action of the spring 140, moves up with the reach bar, until'the nuts 151 on the end of the rod 142, engage the bottom of'the housing 141, and the further action of the spring is thereby checked.

After a momentary pause, during which when extension bottom boxes are-being covered the end wipers are moved in'toward and against the ends of the box, the cam again begins to raise the reach'bar, and

moves it until the block 146 engages the adjustable block 149, when the rack bar will thenbe raised far enough to complete its operation, being moved a distance corresponding to the depth of boxes passing through the machine. As the rack bar 127 descends, its projecting arm 143 engages the upper end of the rod 142 in the housing 141, and

the spring 140 is compressed and the rod 142 depressed to the position shown in Fig. 3. V

In extension bottom box work, it is necessary that the end'wipers 111 should move up until their under sides are on a level with the upper face of the box bottom, and then "ed in the sides of the table.

moveinward against'the ends*of the'box=a distancefequal to the width of the' extension,

and this is 'accomplis'he'cl in the following mannerz'The racks 118 move the blocks 116 upward until the wipers are flush with the top edges of the extension bottom, then the racks reverse and tilt the block and in stantly thereafter the-cam 64 operates'th'emechanism to be presently described, which causes-wipers 111'to move inwardly over-the extended edges of the box. Then rack bars 118 'move upward again, "tilting the wipers 111 intothe corner of extended edges and upward, wiping the endof the blank against the'box. Theinward' movementof the end 7 wipers against the ends of the box is accomplished in the followlng manner:

The head blocks 120aread ustably secured to the slotted plates 121, which have a sliding movement'in the table, and each plate 121 has a depending bifurcated-lug 152, at its outer-end, to which one endof a link153 ispivotally secured, and the other ends of these links are connected to'levers 154 and 155, which are rigidly secured upon shafts 156 and 157 respectively,-which are mount- The lever 154 is a bell crank form of lever,'and its other member is connected tothe upper end of a rod 158, the lower end of which has a collar 159 secured thereon; a coil spring 160 surrounds this end of the rod and bears against forms an integral part of the cap of the adjacent bearing standard 38. The shaft 165 extends beyond the hub of the double armed lever and upon its'outer end a collar 167 is rigidly secured. A coil spring 168 is mounted on the shaft between the collar and the hub of the doublearmed' lever, one end of said spring entering'a hole in the collar while its opposite end enters a hole-in the hub of the lever, theispring' being under a tension thatwill hold the roller 164 in contact with the periphery of the disk 64. The outer ends of the shafts 156 and'157 carry respectively levers 169 and 170, the lever 169 extending upward, while the lever 170 ex-' tends downward, and the ends of these le vers are connected bya rod 171. I

Thus wheirthe camkon the disk 64 passes from under roller 164, the spring 168 forces "the double armed lever downward, and the rod 158. is drawn upon, and the sha'ft156 is given a partial rotation by the bell crank 154, the other member'of-which draws on the link 153 and moves the slotted plate 121 inward. Simultaneously the lever 169 on the outer end of the shaft 156 pushes on the rod 171, and the lever 170 at its other end partially rotates the shaft 157, in an opposite direction to the shaft 156, and the lever 155 on the shaft 157, draws on its link 153 by which the other slotted plate 121 is moved inward. As the plates 121 carry the head blocks 120 which support the wipers 111, it will be readily seen that the said wipers will be moved toward each other against the ends of the box, and with a resilient contact effected by the spring 160. The eye bolt 161 on the reverse movement of the lever arm 162 engages a collar 172, which is'pinned to the rod 158, and thus the rod is lifted, and the outward movement of the end wipers effected.

The opposite end of the shaft 157 from the lever 170 carries a stop finger 173 (see Fig. 1), which when the wipers are moved to the desired point, or in contact with the ends of the box, strikes against the end of an adjustable screw 174, which is threaded to a lug on the side of the frame, and any further movement of the lever arm 162 is against the spring 160, the wipers not being affected thereby.

In boxes of the usual type, or such as have not extension bottoms, the inward movement of the wipers is not required, and to prevent this inward movement of the wipers, the screw 174 is screwed down until its end engages the stop finger 173, which will prevent rocking of the shaft 157, and likewise of the shaft 156. The arm 163 of the double armed lever will however be moved just the same through engagement of the roller 164 with the cam disk 64, but the movement of the arm 163 will be against the spring 160 and the rod 158 will not be affected thereby.

1n the character of box wrapping work with blanks known as loose wrap work, the same arrangement of wipers is used as for tight wrap work, as the blank which does not contain any adhesive gum except along its outer edge portions has to be wrapped around the box just the same, and the gluing of the edges of the blank to the inner edges of the box takes place in the second stage treatment portion of the machine.

The two plungers after they have held the box between them until the blank has been wrapped around the bottom, sides and ends of the box, separate and the upper plunger moves rapidly upward out of the box. This upper plunger however is provided with a box stripper 175 which remains in the box and holds it down against the top of the lower plunger 11 until the upper plunger moves up out of the box. This stripper comprises a blade 175 which [its in a recess formed in the under side of the plunger 16, and it is arranged and op- 55 erates to hold and release the box as .follows: 7

To the center of the blade the lower end of a rod 17 6 is secured, which extends up through a slideway formed in the head block 14 of the arm 15, and the upper end of it is connected to one end of a coiled spring177, the opposite end of which is connected to the upper end of the plunger bar 13. One edge of the rod 176 of the stripper is provided with a notch 178 which engages and locks to an L-shapedlatch 179 that is slidably mounted on top of the head block 14 of the fixed arm 15. This latch is provided with a spring 180 that normally holdsit against the side of the rod with sufficient resilient pulling pressure to cause it to'jump into the notch 178 of the'rod when the rod is moved down with the plungers bar 13.

' The spring 177 of the rod is arranged with sufiicient contractive tension to normally hold the stripper blade up into its recess in the bottom of the plunger. Consequently it moves down with the plunger and rests inside of the bottom of the box when the plunger moves down against the bottom of the box and presses it down against the top of the bottom plunger, and the notch 178 in the rod is so relatively positioned to the spring latch that when. the plunger is down tight in the box and against the top of the lower plunger it looks the rod 176 of the stripper to the stationary head of the fixed arm 15, with the lower edge of its blade resting against the bottom of the box. Then when the plunger starts upward the stripper stays down in and holds the box against the lower plunger. This upward movement of the plunger and its bar stretches the spring of the stripper. until the stripper is released from its latch. This is accomplished by a cam 181 which is secured to the side of the plunger bar in a position to engage a roller 182 on the latch when the plunger has moved out of the box, andmove the latch out of the notch ofthe strippers rod, which then releases the stripper and allows the con- ,tractive tension of the spring 137 which has been stretched out by the upward travel of the plungers bar to jerk the stripper up into its recess in the plunger, thus fully releasing the box from the action of the upper plunger and leaving it resting loosely on top of the lower plunger, as all of the blank wipers after wrapping the blank against its sides and ends move back a short distance from it. Consequently the box wrapping action of thefirst stage treatment station of our box wrapping machine is completed.

The box is then engaged by a transfer mechanism which strikes its outer end and pushes it ofi of the lower plunger and from the machine.

55 .changes mightbe made without departing from the spirit f. our invention.

repeated.-

' The operation ofour blank and box-assembling mechanismis'as followszf The lower plunger is. moved upward a short distaneeand receives a gummed blank from the blank supplying means with its gumined' surface facing .upward. A box. is

then fed into the machine in the path of the 7 upper plunger, which then movesdown into itand carries it against the gummed surface ofthe blank and presses the box againstwit with a cushioning pressure, thereby firmly gluing the blank to thebottom'of the box.

The operating cams of the plungers are timed-to move both plungers down together, and afterthe plungers come together and have gripped the box and blanklbetween them they are 'moveddown togetherbetween the side wipers, but the-upper" plunger movesin such relative movementi to the lower as will alwayskeep the box-gripped by a cushioning pressure against the blank and the to of the lower plungen i In this ox. and blan-kgripping relation, the plungers carry the box and blankdow-n between the side wipers to theendv of their plunger moves'upward on the upward stroke of its reciprocal movement, while the lower plunger] remains stationary. The stripper mechanism ofi-the upper plunger remains down in and against the bottom of the box. Consequently as theupper plunger moves upward, it leavesthe' box restingontop of the lower plunger, from whichit is moved by a-transmittingdevicev which does not forma part of our-present invention. The

lower plunger then moves up and receives another 'gummed blank and r the operation is Our invention provides simple -audieliable box and blank assembling plunger mechanism for assembling -the:,box Land blank in wrapping relation, and fee starting the wrapping of. the blank. aroundlthe bottom", sides, corners and ends-ofthe box, and while :wehave illustrated the preferred, construction andrarrangement of our invention we do notzwish'to be limited to it, as many Having .described our invention. what we claim as new and desire to. secureby Letters Patentflsz' I 1. Ina -first'- stage wrapping machine, the combination--with the table frame and the blank and boxv .supporting plungers, of" side wipers comprising wiper block supporting brackets=provi'dedwvith aslideway, a-raokbar plate slidably mounted in said slideway, a..blank'wiping block secured in said plate inoperative wiper relation 'to said blank and box and plunger's, 1a. toothed; segment endedrock arnrmeshingwith said rack bar,

a reciprocatingrod secured to the free end of said rock armby a. resiliently yielding pivotal COIIDQQtlOIl, and: meansincluding a cam-for reciprocat ng said rod.

2: 2. "In a first stage wrapping machine, the

a: combination with: a table frame and vertically reciprocating'blank and box'gripping and feeding plungers, of two oppositely ar ranged brackets secured on. said tableythe blank and boxside wipers,-a,rack bar reciprocally supportingisaid sidewipers and a segment .toothedended rock arm n mesh with said rack bar, a rod resiliently connect? ed to said rock arm and arranged to permit said-side wipers to engage thesides of the blank and box with. a-fre'sili'ent cushioning pressure, and means including a cam {oper ated lever-connected to said rock arm for reciprocatingsaid rod.- -:j 3. In a first stage wrapping mashing-the combination with atable, vertically reciprjo eating blank vand box gripping and feeding plungers, side wipers supportingbrackets on said table and a vblankand box side wip- I ing mechanism, of supports on said brackets, blank cornerwipers yieldingly. mountedion said arms'and means including gearing for reciprocally moving. said corner wipers to IIIOVJ'agalIISt thecorner end portions, of said blank and box.

4. In a first stage boxwrapping machine, the'combination withjaframe and vertically reciprocating box and blank supporting plungers, of end w pers compr s ng suitable blocks, slide blocks for supporting saidwiper blocks, and head blocksfor supporting, said slide blocks, a rack vbar and asmooth bar pivotally connected to each head block, power operatedpinions in mesh with. the

saidrack-bars, frictional means-for retarding the movements of thesinooth-bars in both directions of their movements, whereby the headblocks are tilted .tocausethe wiper blocks to engage the ends of a, box, springs operating on said slide blocks; wh ch cause .a

yielding pressure offsaid, wipers, said head blocks beingtilted to cause the wipers-toengage theends; of the boxon theiriupward movements, and to move them outof engagement therewith, on their .reversemovements.

5. In a firststage wrapping machine, the combination ofthe table frame, the vertically reciprocating gblank and box supports-plung r.- w thppp s t y. a ge a k and box end vertically rec procating wipers comprising pressure cushioning blocks, tilting means including a positive pushing bar n r ti nal dra gi ar a ass d Oppose the positive pushing bar for tilting said wipers, and means including cam actuatedv gearing for reciprocally moving and tilting said wiper simultaneously against the opposite ends of said box. p

6. In a first stage wrapping machine, the combination of the table frame, and the vertically moving blankand box supporting gripping and feeding plungers, with the side wipers arranged to wrap the sides of the blank against the opposite sides of the box simultaneously as said blankand box are fed down between them, means including cam controlled gearing for reciprocating said sidewipers against said box, with the corner wipers arranged to move to engage said blank and box at their" end corners the instant said plungers have fed said blank and box to the end of its downward movement between said side wipers, means for operatively reciprocating said corner wipers to wrap the blankagainst the end corners of said box, and the end wipers arranged to engage and move vertically up against the opposite ends of said blank and box simule taneously and thereby wrap the ends of said blank against the ends of said box, and resilient means connected to said side and corner and end wipers whereby theyengage said blank and box with yielding cushioning pressures, and means including cam actuated gearing for 'operatively moving said end wipers. V

7 In a first stage box wrappingmachine, the combination with a table and'vertically movable box and blank receiving plungers,

of'oppositely positioned standards ad ustably mounted on said table, side wipers slidably mounted on said standards, means for yieldingly pressing said side wipers against said box and vertically movable wipers adapted to engage the ends of the box on their upward movements, saidv plungers'being adapted to move the box and blank down between saidside wipers.

8; In a first stage box wrapping machine, the combination with a table and box and blank receiving plungers, of oppositely positioned standards adjustably mounted on said table," sliding "members mounted on said standards,sidewipers secured to said members, rocking means for sliding said members, operat ng means res liently connected to said rocking means, corner wipers mounted on said standards and means for imparting to them a reciprocating movement, and vertically movable wipers for engaging the box 'ends on their upward movements, said 'plungers being'adapted to move said box and blank down'between said side wipers.

v-9. In a first stage box wrapping machine,

the combination with atable andbox and blank recelvlng plunger-s, ofstandards adustably mounted on opposite sides of said table, rack platesslidably mounted onsaiid standards, bell.crank form of levers having toothedsegments in engagement with said rack plates,pushrods yieldingly connected to said levers, cam-operated means "for ,rais; ing said push' rods, side (wipers detachably connected to said rack plates, said plungers 7 being adapted to move the box and blank down between said side wipers, and vertically movable wipers for the ends of said box. 7

. 10. In a first stage box wrapping machine,

the combination with a table, oppositely positioned standards mounted thereon, ,laterally movable side wipers mounted on said standards, vertically. movable end wipers mounted on said table, of blocks slidably mounted on said standards, corner wipers pivotally connected to-said blocks, means for reciprocating said corner wipers, means for tilting said, blocks to cause said corner wipers to swing inward on their forward movements and outward on'their backward movements, and vertically movable plunge/1's for receiving a box and'bla'nk and moving them downbetweensaid side wipers in position to be acted upon by the end and corner wipers, all of said wipers being adapted to engage a'box with resilient pressure.

. 11. In a first stage box wrapping machine,

the combination with a table, oppositely positionedistandards adjustably mounted on said table, vertically movable end: wipers mounted on said table and laterally movable sidewipers mounted on said. standards, of

in position to'be operated on by. said end and corner wipers, all of said wipers; being adapted to engage a box with resilientpressure.

12.' In a first stage box wrappingmachine, the combination withendtand sidefwipers, of pivotally mounted corner wipers, means for reciprocating said corner wipers, means for tilting them in one directionwhen moving forward, and in'the opposite direction when moving backward, and forms for receiving a box'and blank-and passing them down between said side wi ers, all i of said wipers being'arrangedto engage said: box with resilient pressure.

13. In a first stage box wrappingfmachine,

the combination withlaterally movable side wipers, of forms for receivinga 'box and blank and movlng them down between said side wipers so'that the sides of saidblank will engage said wipers and be folded by them up against the sides of the box, laterally movable wipers for Wrapping portions up against the ends of the box and over said corner portions, and means for tilting them away from the box ends on their reverse movement, all of said Wipers being adapted to engage said box with resllient pressure.

In testimony whereof We affix our signatures in presence of tWo Witnesses.

MELVILLE E. PETERS. GEORGE H. FATH. ALBERT F. MILLER.

Witnesses:

G. SARGENT ELLIOTT, ADELLA M. Fownn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of laten ts,

Washington, D. G.

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