US1640638A - Means and method for making paper boxes and the like - Google Patents

Description

' s. BERGSTEIN ET AL MEANS AND METHOD 'FOR HAKING PAPER BOXES AND THE LIKE 8 Sheets-Sheet l Mn N \wvulmi Filed Nov. 11, 1925 8 Beets-Sheet 2 s. BERGSTEIN 7 ET AL Filed Nov. 11, 1925 v m9 n2 M \v n3 08 an m m 93 e& @E N8 w m\ M m5 v 8 mo nm N LN W Wmhw mw no a wlw my H an an n2 3% wn o O xi d N J S mm 1 .Nh Q N6 MW nQ mm mm m I v Qw v N9 8. H nn m H m Q L a R L Y X n on \W on R Mn mw. H ow 9w QB E u I I NQ Aug. 30, 1927.

MEANS AND METHOD FOR MAKING PAPER soxss' AND THE LIKE Aug. 30

S. BERGSTEIN ET,AL

MEANS AND METHOD FOR MAKING PAPER BOXE'S AND THE LIKE 8 Sheets-Sheet 3 7 Filed Nov} 11 1925 IIRII I H Aug. 30

S. BERGSTEIN ET AL MEANS AND METHOD FOR MAKING PAPER BOXES AND THE LIKE 8 Sheets-Sheet 4 m QN v Ql O OO Filed Nov. 11, 1925 Y s. BERGSTEIN ET AL MEANS AND METHOD FOR MAKING PAPER BOXES AND THE LIKE Filed Nov.ll, 1925 a sheets-Sheet 5 m3 m5 mm viral! 1,640,638 A 1927' s. BERGSTEIN ET AL.

MEANS AND METHOD FOR MAKING PAPER BOXES AND THE LIKE Filed Novpll, 1925 Au 36 1927. g s. BERGSTEIN ET AL ME'ANS AND METHOD FOR MAKING PAPER BOXES AND THE LIKE Filed Nov. 11, 1925 8 Sheets-Sheet 7 v Aug. 30

s. BERGSTE IN ET'AL MEANS AND METHOD FOR MAKING PAPER BOXES AND THE LIKE Filed Nov.'ll, 1925 a Sheets-Sheet INVENTOI}. fiD

Patented Aug. 30, 1927.

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SAMUEL BERGSTEIN AND ARTHUR o. E. Lrivnlvnn, or MIDDLETOWN, OHIO, A srenons To THE INTERSTATE FOLDING BOX COMPANY, or MIDDLETOWN,- OHIO.

MEANS AND METHOD FOR MAKING PAPER BOXES 'AND TI- IE LIKE.

Application filed November 11, 1925. Serial No. 68,458.

Thisinvention relates to improved means and a new method or process for making paper boxes, or the like.

The use of paper boxes in' a great variety of forms having attained enormous proportions in a. market which is becoming more and more exacting in its requirements, better boxes at lower prices are demanded. Thus improvements in the means and methods of production which tend to cheapen and at the same time to maintain or improve the quality of the product are oi the greatest importance.

The present invention is a radical departure from the prevailing practice of paper box making, the new means and method herein set forth being fundamental in the art and the objects attained by the invention-higher quality of product at low cost of production-are long step forward of the heretofore common practice.

The departure from the common practice comprised in the invention is based on the use of a new element-double faced adhe sive tape-for forming the box joints, new

meansan automatic apparatusfor applying the adhesive element to the paper sheets before the be blanks are cut therefrom, and new designs of boxes made possible by and adapted to the new practice;

It will be obvious from the nature of the invention that its general practice will give rise to various forms of machineryhand machinery, semi and fully automatic machinery for practicing the invention, and to a diversity of forms of boxes adapted to be produced by the new method.

We desire it to be understood, therefore, that the invention as herein set forth is for the'purpose of illustrating the new principle of means and methods for making paper boxes and further to illustrate suitable forms of the product without specific limitations as to theserillustrations', the underlying principles and the fundamental spirit of the invention being the premise upon which the presentation of the invention in the accompanying drawings, the detail-ed specification and the appended claims is made.

In the general practice of the invention it 1s contemplated that the box blanks will be cut from the paper sheets prepared with adhesive on blank cutting and scoring machines commonly used in the industry, that in the blanks will be carried as stock by the manufacturer, or furnished as stockto the customer, to 'be made up' into assembled boxes as requiredfor use, the blanks requiring only the application of moisture thereto to render the tape adhesive for assembling the boxes.

In the drawings;

Fig. 1 is a side elevation of the tape applying machine; v

Fig. 2 is a plan view of the machine;

Fig. 3 is a view in elevation at'the re-. ceiving end of the machine; I

Fig. 1 is a longitudinal sectional view of the machine on line 4.i of Fig. 3;

Fig. 5 is a sectional view taken on line 5 of F g 1;

Fig. 6 is a sectional view taken on line v line Fig. 12 is asectional view on line 1212 1.

of Fig. 3. 4

Figs. 13, 15, 16 and 17 illustrate various types of paper boxes adapted to be made by the improved method of construction;

Fig. 14 illustrates a modified type of machine for applying the adhesive tape to the paper.

Fig.18 is a view in perspective serving to illustrate conventionally a common type of box blank cutting and scoring machine.

The tape applying apparatus as illustrated in Figs. 1 to 12 is supported in a suitable frame l, thefront end of the machine being providedwith a feeding table 2 for supporting the paper sheets as the same are Ill) ers

fed manually, as here shown, to the machine, a receiving table 3 for the sheets being provided at the rear of the machine.

As bestshown in 3 and t the adhesive tape is supported in rolls at rotatable on shafts 5 having their ends tree in slots (3 0t brackets 7. The tape 8 is drawn from the rolls a over guide rollers 9 and tape moisteners which, as here shown, consist of an endless web 10 operable over rollers 11, 12, 18 and 1a and through a liquid container 15. Rollers 11 are mounted on a shaft 16 and are each provided with teeth 17 which act to engage the webs 10 to prevent slipping of the webs on the rollers. Shaft 16 is driven by a chain 18 and sprockets 1920, sprocket 20 being mounted on a shaft 21 supported transversely in the lower frame structure 1. Qperating movement is being imparted to shaft 21 by means of a pawl and ratchet drive 2223, illustrated in detail in Fig. 11, the pawl being pivoted on the end of a spring tensioned plunger 2 l'operable in a housing 25 and actuated in one direction by a cam 26 and in the opposite direction by a spring 2.7. Both the tape supply roll supports 7 and the tape moisteners are adjustable laterally of the machine by means of clamps 28-29 which serve to secure these parts to transverse trame members 1 -1, adjustment or? the tape and the coacting parts serving to adapt the machine for applying the tage in any desired relation to the paper sheets.

As best shown in Fig. 4, he paper sheets 30 are fed to the machine from table 2 by a first set of feed rollers on shafts 3384-, the sheets being presented to the rollers manually. Shaft 33 is supported at its opposite ends in arms 35 pivoted at their forward ends as at and spring tensioned at their opposite ends by sprin (see'Fig. 1), the upper ends oi. the sp being connected to threaded bolts ex; ed through the inner ends ot the arms a provided w h adjusting nuts 39 for adjusting the to on of the springs, thus to regulate the feeding pressure between rollers 3132. To present the sheets of paper properly to the teed rollers and to align and guide the sheets as the same are fed bet veen the rollers, a series or longitudinall extended guides 40 are provided, the ides being supported on brackets 41 depending from a shaft 4-2 and spaced one from another transversely of the machine as best shown in F 2 and 3.

The sheets of paper are advanced by feed rollers Ell-32 to the second set of feed rolle l supported on shafts l5l6, as best shown in 8, the ends or the shaft 15 being supported in opposite arms 17 pivoted as at is and spring tensioned, as best shown in l, by parts 19, and 51, in manner sine to roller 31 to r gulate the supported" The paper sheets are ted to the machine by an attendant, or by suitable sheer teedmg mechanism of well known construction,

in a manner to cause the rear edge of tire leading sheet to be overlapped by the front edge of Fig. 9.

The sheet spacing mechanism is supported on shaft 15 and includes tripping mechanism for governing the intermittent rotation of the shalt, the mechanism consisting as best shown in Fig. 10 of a collar comprising large and small portions 5758, portion 58 having a recess 59 in which a spring 60 is located. Coacting with recess59 and spring 60 is a trip member comprising an upwardly extended arm 61, having a pin 63 secured in its free end, and downwardly ext-ended arm 56 having a roller 62 supported in its free end, the roller being raised above the plane of the sheets of paper in one position and lowered below the plane of the sheets in its other position. The trio member is pivoted on a stud 65 supported in a collar 66 secured to a shaft 67 (see Fig. 2). The collar 57 has a pin (i ladapted to engage pin 63 in a camming action to effect the downward movement. of roller 62 which rests lightly on the sheet as the rear edge of the sheet passes under it, the end of the ari'n 5O acting in the lowered position to stop the. following sheet of paper as shown in Fi 9. The movement of the stop mechanisn'i is very rapid and is timed to effect spacing of the sheets one from another at a distance approximating the diameter of roller 62.

Clearance for roller in its downward the following sheet as indicated in the machine as indicated. at 55 in Fig. 9.

"eed rollers 43- 1 1 the sheets pass movement is provided in the bed plate of I reeled by the pressure of the feed rollers.

Means are provided in connection with the tape guides 9 to prevent sticking or the tape, which has then been moistened. to the rollers, the mechanism consisting of opposite spacing fingers 10 (see Fig. which vct to align the tape and direct the same to guides 9, and a fin of metal 11 secured in the shaft 12 upon which guiderollers 9 are supported, a lever 13 being secured to the shaft for turning the same to cause strip 11 to move against and raise the tape off the guide rollers. Associated with each feed ,roller68 is a scraper 9 supported in a lat orally adjustablebraeket 10 on a cross shaft 11 upon which the tape guide rollers 9 are supported.

Provision is made in the machine, as illustrated in Fig.1, for applying the tape to both sides of the sheets, this being a time saving feature in taping the sheets for boxes requiring the adhesive on both sides of the box blanks. The added means for taping consist of asecond set of mechanisms substantially the same as that described and identified byreference numerals 4' to 29 inclusive, except that the direction of movement of the tape" is upward to'the under side of the sheets of paper. :The main features of the lower taping mechanism which have their counterparts in the upper mechanism are indicated respectively as 4 to inclusive, the actuating mechanism illr trated in Fig. 11 being common to both sets of taping mechanism.

The driving mechanism for the machine and various controls for the feeding mechanism are best illustrated in Figs. 1, 2 and 3, details of the mechanism being further illustrated. in Fi s. 5, 6,7 and 8.

The main drive-connection of the machine is shaft 76 which may have any suitable connection to the source of power. The connection from the drive shaft to lower feed roller 32, as best shown in Figs. 1 and 2, is through gears 77, 78. 79, 80, 81, 82, sprocket gears 83, 84 and s )rocket chain 85.

In order to provide a flexible connection to feed roller 32, sprocket wheel-84 is mounted on a sleeve 86 operable free on shaft34, the sleeve constituting one member of a friction clutch of which the opposite member 8? is keyed slid ably on shaft34, the adjacent end of the shaft being threadedand provided with a wheel nut88, and a spring 89 interposed between the nut and part 87 to regulate the driving tension of the clutch, a fiber disc 90 being interposed between the clutch members 86-87 to effect the desired frictional relation therebetween. The drivconnection from lower feed roller 32 to upper roller 31 is insidethe frame of the machine through gears 91'92 and a friction elutch 96, the outer member of which is pinned to shaft Gear 92 and the inner member of the clutch operate anintegral part" free on shaft 33 andare held in the desired frictional relation of the clutch by means of an adjusting nut 97 and'a tension spring 98 on shaft 33. l

The connection from thedrive shaft 7 6 to lower feed roller 44 is through gears 77, 78, 79, 80, 81, 82, sprockets 83-99'and chain 85, a slack adjusterlOO being a'pplie d 'tothe chain (see Fig. 1)' to effect proper driving relation between the chain and sprocket 99. The driving relation of'sprocket 99 to shaft 46 being frictional, similar to the frictional driving mechanism for shaft 34, and consisting of clutch members 101, 102,103, the adjusting nut and spring 104, 105. Upper shaft 45 driven positively from shaft 46 through gears 106, 107, gear 106 operating as an integral part with the outer clutch member 102 and a sleeve 108, the latter being provided with a trip pin having a function which will presently be described.

Theauxiliary feed rollers 52 which are mounted free on shaft 45 are driven by gears 110, 111, thelatter gears being fixed on shaft 46, each gear 110 having an annular flange 112 coacting with an annular groove 113 in the adjacent roller 52 to arevent axial displacement of the rollers.

llheconnection from drive shaft 76 to lower feed roller 69 is through gears 77, 78, 79, 80, 81 and 82 the last named gear being secured toshaft 114 as best shown in detail Fig. 7. Also secured to shaft 114 outside the frame 1 is the sprocket gear 83, a second sprocket 122 and the inner member of a friction clutch 123, 124, 125. Supported free on shaft outside the clutch is a cam disc 126 and a tripping collar 127 operating as an "integral part. The collar has a trip pin 130 and is adjustable rotatably on a hub 128 of the cam disc and secured thereon by a setscrew" The tension of the friction clut-chis regulated by'a nut wheel 131 and spring 132 on the end of the shaft 114.

The connection from drive shaft .76 to the tape severing rollers 70 and 71 is through s 77, 78, 79, 80,: 81, 82, the sprocket gear 122, chain 133 and sprocket gear 134 free on shaft 116 upon which lower rollers 71 are supported, the connection from roller 71to roller 70 being through gears 135, 136, as best shown in Fig. 6. The driving connection from sprocket gear 134 to shaft 1161s afriction clutch comprised of an inner reeess-e'dclutch disc 137, an outer disc 138, intermediate discs 139, and fiber discs 141, disc137 and the inner fiber disc beinginterengaged one with the other as indicated at 142 (see F 1) to effect a positive drivingrelation i'erebetween. Clutch disc 138 has an outwardly extended hub 143 which is splined on shaft 116 as indicated at 144thus effecting a positive driving connection between the shaft and the outer clutch member. Operable an integral part with clutch disc 138 is a" sleeve 145 having at its inner end a lock collar 146 and outwardly of the collar a trip pin 147. The tension of the clutch is regulated by a wheel nut 148 and spring 149 on the end. of shaft 116. To effect partial or complete severing of the tape, as may be desired, the lower-rollers 71 are each provided with severing or perforating blades 150, and the upper roller with a clearance recess 151 for the blades, a severing action on the tape resulting as the blades and recessmeshes one with the other upon each complete turn of the rollers.

The connection from drive shaft 76 to feed rollers 78, 73, is through gears 77, 78, 79, 80, 82,and 152, the latter gear being secured to shaft 118 on which roller 73 is supported, the upper roller 72 on shaft 119 being driven by frictional engagement with roller 73.

The connection from gear 152 to feed roll ers 74, is through gears 153, 154 and 155, the two latter gears being secured respectively to shafts 120, 121 upon which the rollers are mounted Supported on shaft outside the frame 1 is a friction clutch comprised of opposite discs 156, 157 and an intermediate fiber disc 158, disc 156 being fixed on the shaft. Operable as an integral part with disc 157 free on the shaft is a cam disc 159 and a lockdisc 160, the tension'of the clutch being'regulated by a wheel nut 161 and a spring 162 adjustable on the end of the shaft. 7

The controls for effecting timing of the diflerent units of the sheet feeding mecha nism consist, as best shown in Figs. 1 and 2, of trip and stop mechanism interposed between the feeding rollers 43-44 and 68-69, consisting of a rocker arm 168 pivoted as at 164 and spring tensioned in clockwise direction by a spring 165, the upper end 166 of the arm coacting as a pawl with the cam disc 126 (see Fig. 7) on shaft 114, the lower end of the arm having a flat cam face 167 adapted to be engaged by a trip pin 109, as lower roller 44 approaches completion of each cycle of rotation, which acts to rock arm 168 in counter-clockwise direction, thus releasing cam 126 and starting rollers 68-69 to rotate just before completion of rotation of rollers 43-44 which acts to advance the leading sheet of paper relative to the following sheet sufficiently to take up the overlap of the sheets illustrated in detail Fig. 9, limited spacing between the sheets being effected by the foot 62 of the trip mechanism illustrated in Fig. 10 as described. r

The second unit of the feed roller controlling mechanism consists of a rocker arm 168, pivoted at 169 and spring tensioned in clockwise direction by a spring 170, the upper end.

' 171 of the arm coacting as a pawl with the cam disc (see Fig. 6) on shaft 116, the iower end of the armhaving a cam face 172 adapted to be engaged bythe trip pin 130, as low er roller 69 rotates, which acts to rock arm 168 in counter-clockwise direct-ion, thus disengaging cam 146 and permitting rollers 70-71 to rotate, the severing devices being located in the lower roller to intersect the adhesive tape between the sheets.

The controlling mechanism for the last set of feed rollers 7 4-7 5 consists of arocker arm 173, pivoted at 174 and spring tensioned in clockwise direction by a spring 175, the upper end 176 of the arm coacting as a pawl with the cam disc (see Fig.

5) on shaft 120, the lower end of the arm having a cam face 177 adapted to be en gaged by the trip pin 147, as lower roller 71 rotates which acts to rock arm 173 in counter-clockwise direction, thus disengaging cam 160 and permitting rollers 74-75 to rotate to deliver the sheets to the receiving table 3.

Rollers 7 4-75 are of larger diameter and exert a faster feed on the sheets than rollers 7 2-7 3, the provision being for the purpose rocking o-f the arm acting to rotate the eccentric sleeves 178 and to raise and lower roller 74, thus to effect an interrupted feeding relation of rollers 74-75. To this end shaft 121 is supported in floating bearing operable in guides 186, the bearings being spring tensioned by opposing springs 187-187, and shaft 179 by springs 179 The eccentric sleeves 178 are supported in open bearings 188 formed on the upper sides of bearing blocks 185. When the cam follower 184 of rocker arm 181 is in engagement with portion 190 of cam 159 upper roller 74 will be raised and the feeding action between rollers 74-75 will be interrupted, the end of the sheet during this interval being advanced between the rollers by the action of feed rollers 72-73. The feeding of the sheets upon lowering of roller 74 being faster than the feeding action of rollers72-73, the adhesivetape will be completely severed, if only partially severed by the action of the devices 150, thus the sheets will be separated as delivered to table 3. 7

From the foregoing detailed description and the drawings for illustrating the inven tion, the underlying principles of the inven tion andthe objects attained will be unden' stood by those skilled in the art to which the invention relates. It will'be observed thatthe adhesive tape can be applied as de sired to one or both sides of the paper sheets with any suitable spacing between the tape as maybe required to suit the construction of the box. Qbviously, by passing the sheets through the machine the second Mil with the adhesive element for the entire range of paper boxes, in all the variations of shapes and sizes, in which portions or the box are folded one part relative to another at .right angles to form the joints of the boxes.

An importantfeature of the invention is in connection with the first set of feed roll ers 3l32 which have the further function of aligning the paper sheets as the same are advanced between the rollers. To this end the upper roller isdriven throughthe friction clutch 96 and by the action of the paper on the rollers. As the forward end of the sheet is moved against the trip stop arms 62 the resistance to the sheet will act to stop rollers 31 While lower rollers 32 con tinue to rotate, the action of the lower rollers on the paper being to move the forward end of the sheets into engagement with the opposite sets of stops 62 and thus to align the sheets to the plane of movement through the machine. I

' It will be obvious that the paper for the box blanks may be supplied from a roll and the web severed into sheets of desired lengths. A general form of a. machine suit able for preparing the sheets by this method is illustrated in Fig. 1 1. The several groups of the mechanisms, are supported, as here shown, in a mam frame 200, the roll of paper 201 being supported in separate opposite frames 202. The web of paper 203 as drawn from the rollflis given the desired tension by a set of friction rollers 204;, 205, 206, adjustment of the latter roller relative to the others being provided by means of the pivoted arm 207, in which theroller is supported, and the slotted bracket 208 and lock nut 209. Three sets of feed and pressure rollers210-211, 212-213, 214.'215, act successively on the paper to vfeed it through the machine and to apply the hesive tape inthemanner described, the

3 tape being supplied from rolls 216 and moistened by a device 217 similar to that described. is interposed, as here shown between rollers 212213 and 214.215, consisting of a blade 218 mounted on a reciprocating'head 219 operable by an arm 220 connected to a rod 221 which in turn is connected to a rocker arm 222, the latter being actuated by a cam 223.

The driving connections of the machine consist ofthe main drive shaft 22 1 which is provided with a power pulley 225 and is connected to rollers 210,211 by gears 226,

22?, 228, and 230, rollers 212 and 213 being operably connected one to the other by gears 227231, and roller 215 connected to roller 213 by sprockets 232.233 and chain A sheet and tape severing device tive designs of boxes, of novel construction,

adapted to be produced by the practice of" the invention, are illustrated. The products as here shownserve to further illustrate the fundamental improvements in the art of paper box making comprised in the invention. I

Figs. 15, 16 and 17 illustrate a three piece box inwhich the tape.o'w2- is applied to opposite-sides of the sheet, the box being adapted to be sealed on all adjoining edges as setup. 1 v a Fig. 13 illustrates the paper blanks, in three pieces, froinwhich the box is made up, all the blanks being adapted to be cut from sheets to, which the adhesive element is ap plied on the machine herein described, the method being to tape the sheets on the machine, cut the blanks as illustrated in Fig. 13 and set up the box, assembling of the boxes being done in the general practice by the user who is furnished the boxesknockeddown and he sets them upas required for distributing his products. p I As shown in Fig. 13 the adhesive tape me a applied to the sheets to cause the tape to come to edges of the blanks which form extended at right angles to the strips m.-

' It Will'beobvious'from the several forms of boxes illustrated in the drawings'adapted to'be made by the improved means and method'here'in set forth that the principle of the invention is "universal in its adaptation to the making of paper boxes in which adhesive joints are used in, the construction and, furthermore, that the invention serves to enlarge the field of design of boxes of im proved construction in forms heretofore un known. Thus the invention has revolutionary force in the art of making paper boxes,

.more especiallyin the branch ot'the art where productionin large volume isefiectet by automatic or semi-automatic machinery, the outstanding advantages in the saving of time, labor and material costs, and gain in the joints, the strips of tape a being I is moved into engagement with the sheets on the cylinder.

The adhesive element as herein described and illustrated in the practice of the inven tion is double faced adhesive tape. It will be understood, however, that this is for the purpose of illustration only and that it is contemplated to use an adhesive of any form suitable to the'practic e of the invention.

Having described our invention, we'claim:

1. In the art of. paper box making the herein described method of production consisting in causing a sheet of paper to be moved in a given plane in causing a strip of an adhesive elementtomove in a plane parallel to the plane of movement of the sheet, in causing adhesionbetween said element and sheet incident to the forward movement thereof, in cutting a box blank from said sheet according to the position of the tape thereon and forming the box by effecting adhesive joints through the instrumentality of said element.

2. In the art of paper box making the herein described method of production consisting in causing a sheet of paper to be moved in a given plane, in causing an adhesive element to contact with moisture and to be moved in a plane parallel to the plane of movement of said sheet, in causing adhesion between said element and sheet incident to the forward movement thereof, in cutting a box blank from said sheet and forming a box by effecting adhesive joints through the agency of said element.

3. A taping machine including in combination, a series of feed rollers acting to feed sheets of paper therebetween and means coacting with one of the feed rollers for spacing the sheets one from anothef, means to support a rOll of adhesive tape, means to directthe tape into engagement with said sheets as the sheets are engaged by said rollers, means for moistening one side of the tape to effect adhesion between the tape and said sheets, and means acting; to sever the tape between adjacent sheet-s.

4. A machine of the character described including in combination, a series of feed rollers for advancing sheets of paper, timed one with another to cause overlapping of the front and rear edges respectively of adjacent leading and following sheets, and a member acting as a stop for the following sheet and operable between the sheets to effect spacing of one sheet from another.

5. A machine of the character described including in combination, a series of feed rollers for advancing sheets of paper, timed one with another to cause overlapping of the. front and rear edges respectively of adjacent leading and following sheets, and a member operably associated with certain of the feed rollers resting normally free on the advancing sheet and operable between the sheets. to stop the following sheet and to effect spacingof one sheet from another.

6. A taping machine including in combination, feed rollers coacting one with the other to advance sheets of paper th'erebetween, one sheet overlapping another, one of the rollers being friction driven, mechanism acting to stop'the movement of each sheet and thereby stopping the friction driven feed roller, the coacting feed roller acting to align the sheets one with another, means to reduce the overlap of. the sheets and means acting to direct strips of adhesive tape to said sheets and to effect adhesion of the tape to the sheets following said alignment.

bination, means for advancing a sheet of paper, means for advancinga strip of adhesive tape in a plane parallel to the plane of movement of the paper, means to prevent adhesion of the tape to operable parts of the machine when said machine is at rest, and pressure means for effecting adhesion between the tape and the paper.

8. A taping machine including in combination, a series ofsets of feed rollers for advancing sheets of paper, means for applying strips of adhesive tape to. the sheets incident to the movement thereof, means interposed between sets of the feed rollers for servering the tape between sheets and means for accelerating the movement of the sheets after said severing operation to of feet increased spacing between the sheets.

9. A taping machine including in combination, a series of sets of feed rollers for advancing sheets of paper, means for applying strips of adhesive tape to the sheets incident to the movement thereof, means interposed between setsof the feed rollers for severing the tape between sheets and means comprising rollers having an intermittent feed and acting to accelerate the movement of the sheets after said severing operation to increase the space between sheets.

10. A. taping machine including in combination, coacting sets'of feed rollers for advancing sheets of paper successively, said rollers being timed one set relative to the other to cause the rear edge of the leading sheets to be overlapped by the front edge of the following sheet, stops in engagement with and rendered inoperative bythe lead ing sheet and acting .to interrupt the movement of and to align the following sheet, said stops upon the leading sheet moving out of engagement therewith acting further to release the following sheet and to space one sheet from the other.

4. A taping machine including in com-- ilo 11. In the art of paper box making the herein described method of production con- .sisting in causinga sheet of paper to be moved in a given plane, in causing a strip of double faced adhesive tape'to be moistened on one side and to be moved in a plane effecting adhesive joints by means of the parallel to the plane of movement of the tape between coaeting portions of said paper, in causing adhesion between the tape blanks.

and paper incident to the movement thereof, In testimony whereof, We ailix our signa- 5 in cutting box blanks from said sheet and tures.

in forming a box from said blanks by mois- SAMUEL BERGSTEIN.

tening the opposite side of the tape and ARTHUR C. E. LINDNER.

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