US1341954A - Art of producing covered box-shells - Google Patents

Description

W. A. VI/EIGHTMAN AND C. -H. NITSCH.

ART OF PRODUCING COVERED BQX SHELLS.

mm 0 o M 4 2 .{Z a m mww d S P NNW W APPLICATION FILED IIINE 23.1917- 1,341,954.

W. A. WEIGHTMAN AND C. H. N|TSCH.-

ART OF PRODUCING COVERED BOX SHELLS.

APPLICQXTION FILED JUNE 29. 1917.

1,3413954. PatentedJune 1,1920..

2 SHEETS-SHEET 2.

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WILLIAM A. WEIGHTMAN AND CHARLES H. NITSCH, OF PHILADELPHIA, PENNSYL- VANIA, ASSIGNORS TO STOKES & SMITH COMPANY, OF SUMMERDALE, IENNSYL: VANIA, A. CORPORATION OF PENNSYLVANIA.

ART OF PRODUCING COVERED BOX-SHELLS.

' Application filed June 29,

ducing Covered Box-Shells, of which the following is a specification.

This invention relates to the art of producing covered box shells. v v

Box shells are of two general types, viz: shells in which the side and end Walls are secured and stayed together at their corners independent of the wrapper or cover' known generally as stayed box shells,'-- and shells in which the walls are held in position by the wrapper or cover,'this latter type being generally known as unstayed shells. V Shells of both types are often made from a single blank and for commercial use, are covered with a wrapper adhesively connected thereto, the wrapper generally covering the bottom, side and end walls, and turned-in-over the. edges of the walls. The covering 'or'wrapping operation is generally provided mechanically by the use of suitable mechanism or mechanisms, thus providing for a large output. Due to the differences mentioned in the two types of shells, the mechanisms for completing the covered shell of the two types differ in certain respects, the general practice, briefly stated, being ap-, proximately as follows Stag ed bow sheZZs.-These shells are generally produced independently of the covering mechanism, being brought to the latter mechanism properly shaped and stayed, the covering mechanism applying the. covering blank thereto. The wrapper or cover is generally in the form of a blank---the cornered type ofblank being that generally employedwhich. has one face adhesively coated when brought into the covering mechanism by suitable means, generally by a transfer mechanism which delivers the wrapper or cover to a predetermined position in the covering mechanism. The uncovered shell is generally placed on a form constituting a part of the cover-applying mechanism, after which the bottom of the shell is brought into contact with the cover blank, thus starting a cycle of operations Specification of Letters Patent. Patented J L 1929 1917. Serial No. 177,833.

on the cover blank which successively turn up the side wings, tuck-in the end laps, fold up the end wings, turn over and tuck-in the marginal edges, and apply pressure to various faces to produce proper adhesive connection, after which the covered box is removed'from the mechanism.

Unstayed bone sheZZs.-This type depends more particularly on the cover blank for producing the stayed effect, and therefore has its initial treatment slightly different from that of the stayed shell. The shell in this type, is generally incompleteunstayed-when appliedfto the form, the turned-up walls being held to the form by the operator or by clips. The covering operation then proceeds generally as in the stayed shell type."

In both types it is the practice to manually position the shell or shell blank in the form-block. y

As will be understood, successful covering of the shell is dependent on the proper registration of the shell and cover blank at the beginning of the cover-applying operation; the proper assembly of the shell and the cover blank is of the greatest importance.

In prior practice this has generally been provided manually. In some cases the adhesive is applied to the cover blank manually; in other cases by an adhesive-applying mechanism. Where the assembly is manual, the operatorapplies the shell to the adhesive-coated face of the cover blank, visually registering the bottom of the shell with the complemental portion of the cover blank; the assembly is then manually 'positioned on the form-block. In cases where manual assembly is not had the coated cover blank is transferred to the covering mecha-- 'nism and the shell applied to the form block, assembly taking place by movement of the form block. 7

l/Vhile manual assembly enables accurate registration by the skilled operator, the capacity is, of course, limited'by the ability of the operator or operators to provide the assembly registration with rapidity, thus requiring skilled labor.

Where the assembly is provided in the covering mechanism, the cover blank must be accurately positioned in the mechanism, the form blockcarrving the shell-having a fixed path of movement, since successful covering is dependent on proper-registration of the shell with the wrapper or cover blank when these elements are initially brought into contact in the covering mechanism; where the. cover blank is of the cornered type, this registration is a positive requirement in order that the succeeding operations will apply the coverblank smoothly and properly to the shell. Since in general practice, the adhesive'coatingof the, cover blank is provided mechanically,gand the coated blank then transported to its posi-.

tion in the cover mechanism, the proper -movement of the transfer mechan1smwhere provided mechanically-is of importance.

theblank must depend on its being properly positioned in 'the adhesive-applying mechanism in order that the transfer mechanism may properly receive it, so that accurate positioning of the blank in the covering mechanism is obviously dependent on the blank being properly positioned in advance of its delivery to the transfer mechanism. Furthermore,' the particular action which takes place onthe coated blank during its transfer, produced by the conditioning of the adhesive during-travel, must be substantially uniform with each blank; and, in addition, the transfer of the cover blank from the adhesive-applying mechanism to the covering mechanism involves extended movement of the relatively-thin cover blank with its adhesively-coated face. As the proper registration of shell and blank is dependent on the positioning of the blank in the covering mechanism after being subjected to the effects of these several operations, it will be obvious that the progress of the blank to position in the covering mechanism is had only 7 by successfully passing the several critical stages, ending with the vital requirement that when delivered to the covering mechanism, the position of the cover blank must be in accurate" registration with the path of travel of the shell inorder that when con tact is had between the shellan'd blank, the blank will be in such position-that the covering instrumentalitie's will applyit properly to the shell. V

The present invention is designed to facilitate the general covering operation, in-

creasing capacity and decreasing cost of manufacture by decreasing the general difiiculties present in the assembly of the shell and cover-blank. This is had primarily by assembling""the shell and the cover blank prior to the entrance of these elements into the covering mechanism, thus permitting registration of the elements to be provided independent of the covering mechanism, permitting the assembly to be bodily transferred into the covering mechanism and to a adhesive coating,

Since the transfer mechanism has a fixed movement the proper positioning ofposition therein where the shell portion of the assembly will be accurately alined in the path of travel of the form block, dispensing with any necessity for positioning the shell on the form block prior to movement of the latter, thereby simplifying the several mechariisms which may be required where the operation is entirely mechanical:

In carrying out this general feature, we prefer to produce the assembly practically at the time when the cover blank receives its blank is positively supported, thus reducing, if not entirely eliminating, the travelof the coated blank in-the transfer mechanism as an independent element. This enables registration to be had in advance of reaching the. covering mechanism, and enables the shell or shell blank tooperate as a carrier. in transferring the cover blank to its position within the covering mechanism, practically insuring that the proper registration will be hadin and preferably while the 'such mechanism, owing to the ability tomore effectively position a folded element than onedition, the cover blank is applied progressively to the shell or shell blank instead of substantially simultaneously as under pres ent practice.

In addition, where the operation is 'intended to produce unstayed shells, adhesive connection of shell blank and cover blank extends throughout the major portion of. these blanks and is provided'practically at the start of the usual transfer operation, so

that not only does the shell blank act as a carrier for the cover blank, but the adhesive connection of the twoblanks willfhave advanced to an extent before the assembled parts are positioned in the'covering mechanism, the amount of advance being deter- :mined by the length of time involved in the travel of the transfer mechanism. Furthermore, the tendency of the cover blank to curl is considerably reduced by the fact that but a small portion of the cover blank isunattached to the shell blank.

By employing the shell or partially fold- I ed shell blank as the carrier for the cover blank during travel to the covering mechanism, the pulling or pushing strains may be placed on the shell portion instead of on the relatively-thin cover blank. And in addition, the transfer mechanism may act to retain the folded relation of the wings where .the unstayed shell operation is employed.

put in the appended claims.

In the accompanying drawings, in which similar reference characters indicate similar parts in each of the views:

Figure 1 is a view, generally diagrammatic, showing a mechanism adapted to carry out the broad principles of the present invention in connection with the production of covered box shells of the ,unstay'ed type.

Fig. 2 is aperspective view of one form of shell blank.

Fig. 3 is a perspective view showing the blank partially folded preliminary to the assembly.

Fig. f is a perspective view indicating the manner in which the cover blank and shell blank are assembled.

Fig. 5 is a detail view indicating the manner in which the assembly is transferred to the coverin mechanism.

Figs. 6, and 8 are detail perspective views showing the results of successive operations of the covering mechanism.

Fig. 9 is adetail view indicating elements for turning in the marginal portions.

Fig. 10 is a detail sectional view indicating mechanism for'turning in the marginal portions.

Fig. 11 is a detail view indicating the manner in which the covered shell is discharged from the covering mechanism.

Fig. 12 is a perspective view of a covered shell.

Fig. 13 is a diagrammatic view of apparatus operative in connection with stayed box shells. 7

Fig. 14 is a detail view of one form of stayed box shell.

Fig. 15 is a detail view indicating the manner in which the shell of 14 and the cover blank are assembled.

Fig. 16 indicates the assembly in the form in which it is transferred and positioned in.

the covering mechanism.

Figs. 17 to 20 inclusive, indlcate successive stages of the. covering operation.

Fig. 21 is a detail view indicating the manner in which the covered shell is discharged from the covering mechanism. As shown in the drawings, the fundamental principles of the present invention are applicable for use in'connection with either stayed or unstayedibox shells. Asgheretofore indicated, the structures differ in some respects in operating with shellsof the different types. ln describing the general operations, we indicate the general operation first in connection with the Uastayed bow shells. v As will be readily understood, the shell blank for unstayed boxes may have many different forms, the covering blank.which may be of the cornered typebeing complemental in form to the particular con-' -figuration of the shell blank being used.

The present invention is applicable for use with any type of shell or cover blanks, the

drawings, for-purposes of illustration,"showing the use of a common form of shell blank, indicated at A, and scored 'to provide abottom (1, end wings a, and side wings a I The blank is first folded to cause the end wings a to extend perpendicular to the planeof the bottom, any suitable mechanism being employed for this purpose, a simple ar-.

rangement being the use of folding blades 30 positioned in the path of travel of the blank from the blank feeding mechanism. The latter may be of any desired type, the arrangement shown in the drawing being of a suitable magazine 31 for the blanks, positioned over an endless carrier 32 which, is arranged to remove the blanks successively from the magazine and carry them past the folding blades 30 and into position where they are taken up by the transfer mechanism., Obviously, any suitable blank delivery mechanism may be employed for in stance, the magazine 31 may be positioned away from carrier 32 and a. segregating mechanism .be employed to' deliver the blanks individually to a suitable carrier which will advance the blank through the folding mechanism indicated by blades 30 and position the blank at the desired point I with respect to .the transfer mechanism.

The cover blank, indicated at B, is of proper configuration, havingthe bottom 7), end wlngs b, slde wings b and end laps b and is delivered by a suitable delivery mechanism, indicated generally at 33 to a rotating blank-supporting platen 34 having grippers 34, platen 34 being properly arranged relatively to the adhesive-applying mechanism, indicated generally at 35, in such manner that the blank received by the platen is subjected to the action of the adhesive-applying mechanism while the blank is being supported by and moving with the platen, the grippers 34 having the usual operation and being manipulated to release the ad- I vanceend of the coated blank at the proper time.

The transfer mechanism is of suitable type, the drawings indicating it as in the form of an endless chain 36 carrying grippers 36 which are adapted to engage the turned-up end wings a of the shell blank, carrier 36 and the gripping devices 36 being so arranged that the blank A will be gripped and begin its advance movement at such time that the advance end of blank A 'is brought into proper registration with the advance portion of the cover blank while both blanks are advancing,,as shown in Fig. 4, blank'A having a path of movement which practically places its lower face in position to contact with the outer face of the cover blank. A suitable pressure-applying device, indicated as a roll 37 maybe employed to provide proper pressure on the shell blank as it contacts with the cover blank.

Through proper timing of carrier 36 and platen 34, accurate registration will be provided.

of the shell blank and cover blank is had by a progressive contact of the two blanks as the blanks advance, thus insuring a proper adhesive connection between the con tacting faces of the'two blanks.

As shownin Fig. 5, the assembly 'thus produced has the outer faces of the bottom and side wings of the shell blank entirely covered, end laps b and marginal portions bof the cover blank being exposed; as end wings a extend angular to the plane of the bottom, they are free from connection with the end wings I) of the cover blank. The major portion of the cover blank is thus adhesively connected to the shell blank while the assembly is being transferred, so that possibility of curling of the cover blank is greatly reduced.

Any preferred form of supporting means for the assembly while being transferred may be employed, that shown being in the form of members 38 on which the assembly may rest, plates 39 being positioned above a the plane of the bottom of the shell at this time, as shown in Fig. 5. This arrangement practically 'maintains the bottom and side wings of the shell blank in a single plane,

and at the same time permits the end wings to extend upward while being transferred. As will be seen, grippers 36 grip the up standing end wings a, so that the pulling strains are placed on the shell blank which is generally of heavier stock than the cover blank, and since the gripping mechanism is applied to a part of the shell blank which is not covered at this stage, practically no. liability of damage to the cover blank is present; consequently the cover blank may be of light stock, since it is not subjected to any transfer strains in positioning the blank in the covering mechanism.

The chain 36 preferably carries a plurality of the gripping devices 36, these beed to contact with the bottom ing of suitable type and preferably adapted to provide for gripping action at a predetermined point in their paths of travel and a release of the grip at a different predetermined point, the operating mechanism at this latter point being so arranged as to leave the assemblyv in proper position in the path of travel of a form block 38 in the covering mechanism, which blockis adapta, and serves as the form about which the parts are folded during-aportion of the operation of the covering mechanism. The release of the gripping mechanism is therefore arranged so as to position the assembly insuch manner that the downward movement of the form block will cause it to register with the bottom a of the assembly.

The structure ofthe covering mechanism is shown diagrammatically, the specific constructions being omitted, the particular- As will be seen from Fig. 4, the assembly arrangement shown in the drawlngs being approximately that of a well-known machinefor this purpose, it being understood, however, that the invention is not limited touse in connectionwith this particular type of apparatus, since it is equally adaptable for use with covering mechanisms of other types, and the invention is to be construed as including all types of covering mechanisms adapted to provide the cover.- ing operations. In the form shown, the form block 38 is first brought into contact with the assembly by an inward movement (shown as downward in the drawings), the further movement of the form block carrying the as-. sembly into operative relation with suitable wipers 39 androllers 40 which act to turn up the side wings of the assembly (Fig. 6). Further advance movement then positions the assembly in operative relation to turn in fingers 41, which turn in 'the'endlaps b of the cover blank (Fig. 7), after which the assembly passes into a rotatable frame, indicated generally at 42 and which carries fingers 43 adapted to turn up the end wings 6'. Frame 42 carries a shiftable plunger structure 44 against which'the'as sembly is brought during the travel of the assembly into the frame, the inward move ment of the upper end of plunger structure 44 moving the opposite end of such structure outwardly for purposes presently described.

The assembly, when so positioned within frame 42 practically has the configuration shown in Fig. 8 with the outer faces of the bottom, side and end wings covered by the cover blank, the marginal portions of the latter, however, projecting above the several wings.

After form block 38 has been withdrawn, frame 42 is rotated to locate the positioned assembly diametrically opposite the point where the assembly was received by the frame (the position shown at the bottom of the frame in Fig. l, the opposite portion of the frame thus being presented in position to receive the succeeding assembly). This places the open top of the assembly opposite a second form block 45, the latter being preferably of the two-member typea wellknown arrangement. One section of the form block 45 is then introduced into the assemblyFig. 10-:after which suitable presser elements 46 contact with the outer face of the assembly, and turn in fingers 47 (Fig. 9) are caused to operate to turn in the marginal edges of the cover blank, thus placing these edges in the path of movement of the other section of form block .45, the

inward travel of this second section carrying the inturned marginal edges into and adhesively securing them to the inner face of the wings, this operation taking place in advance of the discharge of'the assembly from frame 42. I a I Discharge of the assembly'is provided by the introduction of the succeeding assembly into the upper portion of the frame, the discharged assembly remaining on form block 45 and being carried downward into the path of presser members 48 which provide pressure to the wings to insure a proper adhesion between the marginal edges and the shell wings, after which the assembly is moved into the path of operation of presser members 49 which contact the sides of the covered assembly and which cooperate with stripping elements 50 to strip the covered shell from form block 45, positioning the shell opposite a pusher 51 which is adapted to contact with one end of the covered shell and push it out of the path of travel of block 45.

As will be readily understoodfme'chanism of this type provides for practically automatic operation, and since there is no material travel of the coated blank independent of the shell'blank, the speed of travel of the cover blank forms no material controlling factor in the operation of the apparatus, since the cover blank, instead of moving as a thin sheet, as in the prior mechanisms, forms part of a composite assembly which gives a sufficient body to prevent damage to the blank.

The application of the general invention to the covering of g Stayed ba ans differs to some extent from that employed in connection with-the unstayed type, due' mainly to the fact, the shell is preformed instead Of-i'producedQby the apparatus.

Fig. 13 indicates diagrammatically one form of apparatus which may be employed with the stayed box type, the covering mechanism being more or less similar to that.

shown in Fig. 1. As heretofore pointed out, the form shown is simply illustrative of an apparatus adapted to provide the covering operation. 7

In this form the shells are fed into the transfer mechanism in anysuitable manner,

the drawings showing the use of a conveyer' 52- which advances a succession of shells into the path of travel of an endless chain 360 which, in this instance, is shown as having inwardly projecting fingers 53 which are adapted to contact with the rear upj standing wing of the shell, fingers 53being formed of a rigid portion 53 and a pivoted portion 53 preferably yieldably supported.

Conveyer 52 advances a shell into the path of travel of a finger 53, the latter then advancing the shell so as to bring the bottom of the shell into registration contact .with the cover blank supported on platen 34, the cover blank being then progressively applied to the bottom of the shell by the advancing of shell and blank, as shown for in stance in Fig. 15, the continued travel of the assembly bringing it into the operating Zone of a wiping brush structure 54 to cause a positive. adhesion of blank and shell. The assembly thus completechindicated in Fig. 16,'is advanced to position within the cover ing mechanism, a stop 55; in.thepath of travel of the shell actingto limit the advance movement and properly locate the assembly in position 'to cooperate with form block 38 as previously described. This positioning without affecting the movement of carrier 360, is provided by the-'yieldable member 53", the shift in the path of travel of carrier 360 from ,a straight line into the curved portion which travels on one of the supporting wheels for the carrier, withdrawing the rigid *portion 53 from its supporting position with respect to the shell and placing thesupport entirely on the yieldable member 53 the result bein that when further stayed type of'shell, is followed, it being understoodjof course, that since all of the wings oftheshellwereturned up when the shell wasformed,',the side; wings b of the cover blank-jonly-will beturned up instead of the side-w sof b'oth blanks as referred to inthepious jdescription. The results of the various operations are shown in Figs. 17 to 20,it'being' inderstood that the marginaledgesshown 'I1n' Fig. 20 will be tucked-in as heretofore pointed out, and the p of the present invention are considered as.

falling within the scope 'of the present in- 'vention, the invention embracing all such structures, combinations, arrangements of parts or mechanisms as may fall within the spirit and scope of the invention as expressed in the accompanying claims when broadly construed.

As heretofore pointed out, the invention is adapted to be used with any type of box shell formation, angular or otherwise;

Obviously, the invention is not limited to structures which operate to move the elements or assembly in the particular directions indicated in the drawings, this being a matter for machine designlng and con-' struction and obviousl falling within the skill of the designer. t is also to be understood that, if desired, the transfer carrier 36 or 360 may be duplicated so as to operate on both sides of thetravel path of the assembly.

As Wlll be understood the advance movements of the shell or shell element and the cover blank while assembly is being had, are at synchronous speeds.

Having thus described what we claim as new is: v a

1. The method herein described of covering a box shell element with an adhesively attached cover blank, which latter has a body portion and integral side and end wings shaped to cover the exterior walls of the shell element with marginal portions turned over the .edge of and affixed to the interior walls of the shell, which consists in facially supporting such a cover blank in curved or arched condition, then advancing our invention,

the thus supported blank and applying adhesive to'its exposed face, then IIIIPOSlIlg and pressing aface portion ofthe box shell element to be covered upon and in registraof the adhesiveface of the curved or arched and supported cover blank to adhe'sively assemble the shell element and its cover blank, and thereafter moving; the assembly away from the'support and. folding the unattached portions of the cover blank about and adhesively attaching, them to; the re,-

' maining exterlor walls of the box shell and the free marginal portions thereof to theinterior walls of said shell.

- 2. The herein described method ofcover- 'ing a box shell element having a body por tion' and side and end wall members, with an adhesively-attached cover blank having a body portion with side and end wings shaped to cover the exterior walls of" the shell and marginal portions to beinturned over the edges of and affixed to the, interior thus curved and supported blank, advancing the box shell element to be covered and bringing a'selected edge portion thereof into registration contact with a selected companion portion of'the supported cover blank, said contacting edge portion being sufliciently removed from an edge of the cover blank to leave a free marginal portion to be thereafter affixed to an interior wall of the shell, then advancing the assembled shell element fand its cover blank and causing portions thereof to become adhesively attached during such advance, thereafter completing adhesive attachment of the cover blank to the remaining uncovered walls of the box shell,

and finally inturning the marginal portions of the cover blank over the marginal edges of and aflixing them to the mterior walls of the shell.

.3. In a method of covering a box shell element having a body portion'and side and end wall members with an adhesively attached cover blankhaving a body portion and side and end wings shaped to cover the exterior walls of the shell and marginal portions to be inturned over the marginal edges of and afiixd to *the interior walls of the shell, the steps which consist in simultaneously advancing the box shell element and the cover blank along separate travel paths which meet at a tangent point in their travel to bring the shell into registration attachment with the coverblank alonga transverse line removed from'the extreme advance edge of said blank, continuing the advance of the shell element and its cover blank and adhesively attaching portions thereof during such continued advance,and thereafter ailixing the side and end wings of the cover blank to the side and end walls of the box shell element and the marginal edges of the blank to the interior walls of the shell eletlon contact Wlth a complemental portion ment.

1 4. A machine for covering abox shell element having a body portion and side and end wall members, with an adhesively attached cover blank having a body portion and side and endtwings shaped tov cover the exteriorwalls of the shell element and with marginal portions to be inturned'over the marginal edges of and affixed to the interior walls of the said element, embodying a rotatable member: for facially supporting and advancing such a cover blank, means for applying a coating of adhesive to a face of the blank while ,on said supporting member, means for advancing the box-shell element to be covered and bringing a selected edge portion thereof into superposed registration attachment with a selectedcompanion portion of the cover-blank while on the support marginal portions of the wings of the cover blank over the marginal edges of and ailixing them to the interior walls of the shell.

- 5. In a machine for covering a box-shell element with a covering blank having a body portion and side and end wings shaped to cover the bottom, side and end walls of said element, comprising a rotatable assembling support, means for feeding covering blanks singly thereto, means for applying adhesive to a face of each blank while on said support, means for successively advancing shell elements to be covered and for causing a predetermined portion of each element to make registration contact with a selected portion of the cover blank while the latter is still on the assembling'support, said means also operating to advance the assembly away from said support, mechanism for thereafter adhesively aflixing other portions of the cover blank to other exterior walls of the shell element, and devices for turning marginal portions of the cover blank over marginal edges of the element and for afiixing them to the interior walls thereof.

6. In the art of covering box shells of the unstayed type, the method of preparing the shell element and blank for covering mechanism operation, which consists in adhesively connecting the bottom and predetermined wing faces of tlie unstayed shell blank in registration contact with complemental portions of the cover blank, and transferring the assembly to the covering mechanism with the remainingshell blank wing faces and cover blank free from connection. I

7. In the art of covering box the unstayed type, the method of preparing the shell element and cover blank for covering mechanism operation, which'consi'sts in adhesively coating a face of the cover blank, assembling the shell and cover blanks by presenting the shell blank into registration contact with the adhesively coated face and with predeterminedwings of the unstayed shell blank extending angular to the plane of the bottom and remaining wings of such blank, whereby said'angular'wings will be shells of maintained out of contact with the cover blank, and transferring the assembly to the covering mechanism.

8. In the art of covering box shells of the unstayed type, the method of preparing the shell element and blank for covering mechanism operation, which consists in adassembling the shell and cover blanks by presenting the unstayed she'll blank into registration contact with the adhesively coated face and with predetermined Wings of the shell blank extending angular to the plane of the bottom and remaining wings of such blank, whereby said angular wings will be hesively coating a face of the cover blank,

maintained out of contact with the cover .hesive to one face of the blank while so supported, means for causing an attached portion of the shell to contact with a selected portion of the blank in registered relation and for adhesively attaching the contacting portions thereof while the blank is upon its support, and transporting means for bodily transporting the assembled shell and its blank.

10. In a machine for covering the exterior walls of box'shells with a cover blank having a body portion and integrally connected side and end wings and in combination, means for supporting a covdr blank, means for applying a coating of adhesive to one face of the blank while so supported, means for adhesively assembling selected portions of the. shell and blank in registered relation while the blank is upon its support, cover-applying instrumentalities for adhesively attaching wings of the blank to upstanding walls of the box shell, and trans ing mechanism adapted to receive the assembly. w v v 12. In the art of covering box shells or the like each with a cornered cover blank having a body portion and side and end wings, a support, for the cover blank, ad-

body portion and side and end wings, means for assembling 'the shell element and adhesive-faced cover blank with a face of the element in registration contact withv a co1nplemental portion of the adhesive face of the blank,,said means including a rotatable blank-supporting platen, a' carrier for ad vancing the shell element in a plane above and coincident with the path of travel of the supported blank, and means whereby the advance movements of the shell element will I present the latter in registration contact.

with the blank while on and during rotation of the platen;

145.111 the art of. covering box shells or the like each with a cornered cover blank having a body portion and side and end wings, means for assembling the shell element and adhesive-faced cover blank with a face of the element in registration contact with a complemental portion of the ad- ..hesive face of the blank, said means including a rotatable blank-supporting: platen, a

carrier for advancing the shell element above and in a plane coincident with the path of movement of the supported blank, and means whereby the advance movements and during rotation of the platen, and covering mechanism, said carrier being op erativeto 'position the assembly in said mechanism. q I 15. In the art of coveringbox shells of the unstayed type, a support for the cover blank, means for adhesively coating a face of the blank while supported,means for presenting faces of t e unstayed shell blank to complemental-portions of the adhesive face of the supported cover blank and adhesively connecting them in registration contact, and

the bottom and opposite wing means for maintaining, other wings of the shell blank out of contact with the cover blank,

16. In the art of covering box shells of the unstayed type, a support for the cover porting platen, adhesive-applying mechanism for coating'a face of the cover blank while on and during platen movements,

, means for advancing-a shell blank and for -moving opposite wings of the shell blank out of the plane of the blank bottom, and means .for'advancing the shell blank with its remaining wings in the plane 'of the bottom and for assembling the blanks by presenting faces of the bottom and said latter wings in registration contact with complemental portions of the adhesive face of the supported cover blank.

18. In the art of covering 'box shells of the unstayed type, covering mechanism, transfer mechanism, meansfor advancing the shell and cover blanks individually into assembling relation, adhesive applying mechanism, and means for correlating the operations of said mechanisms tolprovide the following sequence of operations: turnup opposite wings of the shell blank and apply adhesive to a face of the cover blank of the shell element will present the latterirrprior to assembly, position the bottom and registration contact with the blank while on I remaining wing faces inregistration contact w1th complemental portlons of the adhesive face of the cover blank, advance the

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