US989789A

US989789A - Box-forming mechanism.

Info

Publication number: US989789A
Application number: US54501810A
Authority: US
Inventors: George W Maxwell
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-02-21
Filing date: 1910-02-21
Publication date: 1911-04-18
Anticipated expiration: 1928-04-18

Description

G. w. MAXWEL BOX FORMING MECHANISM. APPLICATION FILED FEB.21, 1910.

Patented Apr. 18, 1911.

- I. Inveniur: I g I Gsdrge Wdfaxwell.

3 SHEETS-SHEET 1. I

witnessea".

G. W. MAXWELL. BOX FORMING MECHANISM. APPLICATION FILED $313.21, 1910.

4 6 730 inweniol? qffeorye W V ax'mell.

Patented Apr. 18,1911."

3 SHEETSSEEET 2.

' witnesses.

G. W. MAXWFLL.v BOX FORMING MECHANISM. APPLICATION FILED IBB.21, 1910.

989,789. V Patented Apr. 18,1911.

3 SHEETSSHEET a:

Invenion Geore WJlaxwe/J.

- each mandrel 'c'omprisin gitudinally on each face so that it presents,

four sections 27, each section fon'ningone of the corners of the mandrel. tions 27 have concave inner faces 28 which enable them to fit neatly about. a wedge sleeve 29,,Which.is mounted to slide jfreely on the inner tube-23. The sections 27 are held in place by studs 30 which are fastened in the inner tube 23, and these studs pass outwardl through longitudinally disposed slots 31 in the wedge sleeve 29. These slots permit a relative sliding movement of the Wedge sleeve ,on the inner tube, and guide the sleeve on the tube as Will* be readily understood.

As illustrated in Fig. 10, the studs 30 are disposed at the corners of the sections or segments of the ma-ridrel and the sections 27 are provided respectively with enlarged re- 'cesses or pockets 31, which receive springs 32 disposed around the studs. These springs thrust against the bottoms of the pockets at their inner ends and against nuts 33 at their outer ends which are applied to the studs. In this way the springs tend to force the segments 27 inwardly. In order to force the segments outwardly and expand the body of the mandrel the wedge sleeve. 29 is,

formed with a pair of wedge collars 34 which extend continuously around the sleeve as indicated. Near the meeting edges of the segments 27 adjusting screws 35 are placed in the walls of the segments, and the tips of these screws seat against the sides of the collars 34.- By reason of this arrangement the position of the segments may be nicely adjusted. At the inner end .the body of each segment 27 is reduced or cut downso as to form a guide neck 36, and on this guide neck a spreader ring 37 is mounted to-slide longitudinally. This spreader ring 37 is of square or rectangular form like the body of"the mandrel, but it is wedge shaped in cross section. On: opposite sides it is provided with handles 38, which extend longitudinally of the mandrel and these handles are attached by screws 39 to a split ring or collar 40, which slides longitudinally on the neck 41 of the mandrel adjacent the gear wheel 24. This collar 40 is cut away on its upper side so as to form a gap or gu e opening between the edges 42, and in this gap there is received a guide boss43,

These secclose the mandrel.

. derstood.

which projects upwardly from the upper side of the wedge .slcevc. This boss 43 fills the gap between the edges 42 and affords means for guiding the collar 40 as will be readily understood. In this boss 43 a stud '44 is fixed, and on this stud 44 is mounted a roller 45 which cooperates with the mechanism to be described hereinafter. Means are provided for slidingthe collar 40 in or out so as to move the spreader 37, and means are also provided for engaging the roller 45 for operating the wedge sleeve."

Extending longitudinally in one of the sections 27 of'the mandrel 21, I provide a -'gri'pper shaft 46, and this gripper shaft is provided at suitable points with grippers '47 working in recesses or pockets 48 formed in the side of this section as shown in Figs. 8

and 11. The under sides of these grippers 47 are pressed by leaf springs 49 so that the ends of the grippers are 'normally held against the edges of the pockets 48, as indicated in Fig. 11 The end of the shaft 46 is bent laterally so as to form a trigger 50, which is adapted to be rotated so as to throw the grippers totheir open position or to their closed position. In the mechanism to be described hereinafter means are provided for automatically operating these grippers, as indicated in Fig. 10. Cooperating with each mandrel 21 there is provided a case 22 which is in the form of a box open at both ends. The bottom 51 of the box is divided longitudinally into two sections 51, 51' formedintegral with the lower half portions of the sides thereof. To the upper edges of the sides 52 cover sections 53 are attached by hinge joints 54. These cover sections 53 form the upper corners of the case and are adapted to meet'togethcr at their upper edges, as indicated in Fig. 10, so as to in- The upper side of the case isprovided with a latch 54 pivoted at 55 and pressed by a spring 56 so that the hook 57 of the latch tends to engage a latch hook 58 on the opposite sect-ion. The spring 56 is arranged to press on'the tail of the latch and the inner cfge of the hook 58 of the lug 59 is incline so that the hook 57 will'snap over the lug when. the cover sections 53 are brought together, as will be readily understood. The latch 54 of eaph case is disposed at the middle of the case, as shown in Fig. 4. On the case sections 53 also at about the middle of each case, closing lugs 60 are provided, which present inclined lower edges (31, which facilitate-the automatic closing of the cases in succession, as will appear more fully hereinafter. One of these lugs 60 is provided with an upwardly projecting stop pin 62, which lies under the tail of the latch and limits the opening movement of the latch, as will be readily unhc bottoms 51 of the cases 22 are provided with downwardly extending have enlarged heads63 having beveled upper faces 51. When the blank is being wrappedupon the mandrel, the case of the mandrel, which is in operation, is in a depressed position as indicated in this figure.

In the operation of the machine, it shouldbe understood that the spider or wheel 16 is advanced by a step by step movement, bringing the mandrels in position before-the feeder; as each mandrel comesinto position at the feeder, it receives the blank, which is to form the receptacle body, and the mandrel is then rotated so as to wrap the blank around the mandrelr The blank has been previously smeared with mucilage or a similar adhesive substance in a suitable gumming device 103. The mandrels are normally locked against rotation. For this pur ose in the outer end of each arm 18 a 10C or dog (55 is mounted ona pivot pin 66, and the butt end of this dog is ressed by a' spring (37, which normally hol s the dog 65 in the notch 26, as will bereadilyunderstood. The

dog (35 is provided at its free end with a mouth or gap 68,' which enablesathe dog to be raised so as to release the mandrel, as will be readily understood.-

The mechanism for releasing the dog and rotating each-mandrel in succession will now be described. For this purpose, directly over the uppermost mandrel as indicated in Figs. 1 and 2, I provide a cam shaft (39, which is rotatably mounted in a horizontal positipn as indicated, On this cam shaft there is provided a segment 70, the teeth of which are adapted to engage the gear wheels 24 of the -mandrels' soon after they come .into position under the shaft 69. The side ofthe segment is provided witha cam 7 1,which cam at the proper time engages iu-the mouth 68 and raises thedog (55 in the nann'er indicated in Fig. 2.

Shortly after the'dog is raised-the teeth of the segment come in contact with the gear wheel 24 ,and rotate the mandrel throughtwo complete revolutions. As soon asthis, has taken place, the cam 71 releases the dpg and the dog looks the mandrel against further rotation in the position in which it is left by the segment 70.

I provide means for giving the spider 16 a stepiby step movement ,so as to bring the mandrels in coiiperative relation with the segment 70. For-this purpose 1 provide on the axle or shaft 151-. feed arm 72, which extends upwardly in an "inclined position, as shown in Fig. ,3. Thisffeed arm'fm has a laterally extending bar 73,= w hich m vidcd with a cam roller 74, which cam roller runs in a groove in the cam 75. The cam is provided with a trip 76 in the form of a plate, the purpose of which will appear more fully hereinafter.-

The upper side of the arm 72 is provided with a link 77, which extends upwardly and the upper end of this link T'i' is formed into a hook 7 8, which is adapted to engage the stub end of one of the spindles 19 of the mandrels. Beyond the hook 7 8, the end of the link is formed into an upwardly extending toe 79, the direction of rotation of the cam 75 being that indicated by the arrow.

As the cam rotates the trip 76 strikes a finger 77 projecting from the side of the link 77 and raises it so as to disengage it from the spindle 19, with which it is in engagement. The motion of the canrthen rocks the arm 72' toward the left so that the link moves forwardly and inwardly until the hook 78 engages the spindle of the arm disposedadjacent and in the mid position,

. that is, under the shaft 69. \Vhen the'houk 78 has engaged this spindle the cam 75- rocks the arnr72back again to the position in which it is SllOWHJIl Fig. 3, rotating the spider through an angle equal to the angle formed by the arms of the spider. The toe 79 assists in bringing the link 77 into engagement with the spindles of the formers. for its forward edge strikes the spindle and guides the hook onto the spindle as will be r readily understood.

I provide means for locking. the spider after each step by step movement. For this purpose, the outer end of each arm 18 is provided with a rib 80, which extends longitudinally with the spindle 19. Adjacent to .the path of this rib I providoja bracket 81,

and this bracket is provided at its lower end with a detent' pawl 82, said pawl being pressed by a sprlng 82 so that it isadapted lbo to drop down onto the arm behind the rib '80 and prevent the spider from rotating in a backward direction.

In this connection it should be understood that the direction of the arrow in Fig. 3. In order to lock the spider against fol-wart.movement in the position in. which it is left by the link77, the bracket 81 is provided with a stop pawl 83, the rear end of which is pivotally attached to a block 84, said block being guided ina pocket 85 formed in the lower end of the the side of the cam 88, which cam-ismounted rigidly on the cam shaft ,69. Tlnscam has atoe 89, which periodically engages-the arm 87 rotating in the direction of the arrow in Fig. 3, and this raises the 83 out of the path of the ,rib 8080 aSJtO enable this l'iuii'erspring 86 1s toward advance of the spider is that indicated by,

the link 77 to advance the spider as will be readily understood. The pawl 83 drops into position in front of the rib 80 by gravity. The function-of the spring 80 is to act as a butler to relieve the shock of the segment and it also acts so as to give a little play or excessive movement when the segment is arrested so as to insure that the detent pawl 82 will drop into position behind the rib, as indicated in Fig. 3. i

As indicated in Fig. 1 when one of the arms 18 arrives at the position next to the uppermost position, the case 22 which 'normally incloses the mandrel is in a depressed.

and open position, so as to leave the mandrel exposed. At this time the grippers 47 are disposed in an open position, as indicated in Fig. 1. \Vhen the grippers are in this positi,on the feeding mechanism, which is not illustrated, delivers a blank 90 to the mandrel so that the forward edge of the blank comes into position under the grippers as shown. The mechanism then operates to close the grippers so as to secure the forward edge of the blank to the mandrel before the .blank is wrapped or rolled on the mandrel.

For this purpose, the shaft 69 is provided with a cam 91, said cam having a toe 9.2 at one point on the periphery thereof. On the side of a bracket 93 I provide a cam lever 94, and this cam lever is pivotally mounted at 95 and is provided with a laterally project in )in 96 which )ro'ects a ainst the od r:

of the cam 91, as indicated in Fig. 1. The t lower end of this cam lever 91 is provided with a link 97 and the forward end of this link is pivotally attached to a sliding dog 98, which is guided so as to slide longitudinally in a suitable bracket 99. The forward end of this'dog 99- is provided with a nose 100 which is adapted to engage with the trigger of the gripper shaft 40 so as to ro-' tate the shaft and close; the grippers on the edgeof the blank will be readily understood. Near the forward end of this sliding dog. 98 a rctractor spring 101 is provided, the rear end of which is secured to the upper portion of the bracket 99L After the r while the other pair of rollers will be pressgrippers'have been closed soas to secure the blank to the mandrel, the link 77 is operated by the cam 7 5 so as to advance this mandrel through 1w 0 revolutions.

Eleforc the blank 90 1s fed to the machine it. PASSES through a gumming device 103.; As indicated most clearly in' Figs. 1; andQ I: provide. presser rollers 104: which coiiperate with the mandrel so as to Wrap the blank. Tn ordeiwto mount these presser rollers I provide a horizontal shaft 105 which extends outwardly from the side of the bracket 99 and on this shaft there is mounted an outside roller yoke 106 and an inside ro'ller yoke 107, The roller yoke 106 has a divided cross bar 108 extending longitudinally with the shaft 105 and this barhas integral arms 109 which extend over the mandrel andcarry a pair of the rollers 104 as shown. The roller yoke 107 is similar to the yoke 106 having a cross bar 110 with arms 111, which extend over the mandrel and carry a pair of the rollers 104. As indicated in Fig. 6, it will be seen that from this arrangement four rollers are provided arranged in alining pairs, the pair at the left being carried by the outside yoke 106. These rollers 10 1 are spring pressed' For this purpose, near the middle of the bar or shaft 105 collars 112 are provided and these collars are rigidly attached by set screws113, and they are provided with rigid posts 114 having overhanging arms 115 respectively. Each of these arms 115 is connected by a spring 116 with one of the cross bars 108 and 110. As indicated in Fig. 6 these cross bars. 108 and 110 are divided at their middle point so that the rollers carried by each yoke operate in a' sense .independently of each other, that is, they are constrained by different springs.

In order to provide stops against which tho springs 11G normally hold the roller yokes I provide the bar 105 with fixed collars 117. and these collars have outwardly projecting arms 118 provided wieh'set screws '119 against which the cross "bars 108 and 110 thrust. By adjusting these set screws 119 the elevation of the rollers may be nicely adjusted.

Attention is called to the fact that the fingers or

arms

109 and 111 which carry the rollers are of different lengths so that the rollers are disposed apart from eachother with respect to the direction of rotation oi the mandrel. This is v an'advantageous arrangement and greatly facilitates the bending of the blank at the corners of the mandrel for one pair of rollers will be pressing he side of the mandrel near the corner tion it is necessary to throw the rollers 101 up out of the way of the latchof the case and out of the path of the cover sections 53 of the case. For this purpose, the arms 109 are connected by a cross barxlQO, and this cross bar is provided at its middle point, as

indicated'in Fig. 6, by a downwardly extending curved trip arm 121. The function of 1 sideot the cross bar 110, as ehown in Fig; 7.

i the mandrel the grippers 47 are loosened.

provide a cam 124 which may be formed inriphery. On the face of thils cam runs a roller 126 guided lo the end of a belhcrank thetrigger 50, indicated in Fig. 1,. Tothe lower arm 128 an 'iu'ztnating spring: 129 is 1 attached, the left hand end of the spring be "ing attached to a part of the frame as indiformed.

gum on theblank operates to sticl-r the two la ersof the receptacle together y mechanism con'iprisee cross head 130 which is secured to the upper end of a plunger 131 Fr wl the ends of the cross head 130 guide sterile 134 extend downwardlih, and are mulled which guide bracket is secured on a suitable 137, which"Tspimtally mounted or I fixed cross bar 108 is provided with oven-hanging brackets 122, whichproject over the cross bar 110 and these brackets are provided W-1th set screws 123, which engage the upper From this arrangement it will be evident 110 will also be depreesed so that all the guide bars 105201 the feed 'niech tachcd as showi'i in Fig. (L'

As Soon as the blank has been wrapped on truism is at- For this purpose, alongside'of. the cam 91 l tegral therewith. as indicated in 'ljijr. 2.

This-cam of substantially circular forin,- butls provided with a notch 125 in its pe -U lever 127, said bel cranklever having a lower arm .128, which is adapted to engage cat At the rapper momenttlie roller 121i pas-eds up; into the notch and the spring 4129 pulls the arm 1528 over so as to engage the trigger and rotat it to the left. 'ihis loosens the grippers as will bereadily understood. Vl henthe mandrel is being rotated the presser rollers holdthe blank closely against the mandrel so that a rudimentary body for the receptacle will be As this rotation takes place the willv be (lily understood. :is Soon as this operalion in complete the n'ioclianisn'i comes into operation for z-sisig; the ease around this mandrel;

"Referring 1 to Figs; 1 and 2 this m'oving verticallyin a guide bracket 132,

bracket- 133 fixed on the axle" L5 as shown.

through ho guide bracket. 132. The etems; or guide cross head 135, 4 i a. link 136 is at- ;nk is: adapted to bl} operlower arm of the bell crar lore:-

on tlidju de inched Uri-rid this ated by "the. spriiur.

tractor spring 1 16 is provided for forcing the cross head downwardlv. As indicated in Fig. 1 the upper ends of the guide stems 134 project above the cross head 130 and they are provided with leaf springs 146 having curved noses'or bows disposed upwardly and having" their free ends inclined and extending downwardly and inwardly.

lnih'e operation of the machine when the hell crank lever 137 is rocked by the (am 140 the guide stems 131 raise the cross head 130 and it strikes the bottom of the case as in dicated in Fig. 2 ()IJll'fli'lllfl to raise the case so that the bottom thereof seats against the underside of the uppermostmandrel. As

dlie cross-head moves up the springs 1'16 conic ir contact Will the closing lugs (50 of the case and fold the cover sections into position over the mandrel. In this ('Ullllttv tion attention is called to the fact that the right hand springl ltl projects above the left hand spring, as shown in Fig. 1, and this arrangement is adopted to insure that the right hand cover section carrying the hook 58 will he closed first. After this comes into position the other cover Section is folded over and-the latch 51- closes automatically by As: the case comes up into position th curved trip arm 121 is struck by the upper end of the latch and raises all of the presser rollers out of the way of the case, so as to enable the case to be closed and latched. In order to hold the spring 14.6" in position, the same is; mounted about a guide stem 147.

It should be understood that after the blank is wrapped on the mandrel, the mandrel is expanded by actuating the wedge sleeve 2.). fl or this purpose, in the path of the roller 45. as the uppermost mandrel leaves its: position under the shaft 69 1' provide a cam 14% and the manner in which this cam engages the roller is indicated most clearly in Fig. (L This outward sliding move- -ment ot the wedge sleeve expc u ds the mandrel within the case and forces the SCChlOIlS 27 of the mai'idrel outi'nto the corners of the case. This gives the receptacle bodyneatly formed corners and clamps the receptacle body he tu'ieen'the mandrel and the case. Af r be ing clamped in thin brought into contact; 1 may be in, the term at 2 burner tube 149 having o 'ienings 150 wh 2e gas escapes forming a flame which ia' do. upon the case. In this wnv the temp. lare of the a heater which adhesive or gum is dried while the receptacle is clamped in an angular form, this insures that the receptacle will retain this square .or angular form.

' Inthe path of the mandreljust beyond the cam 148, I provide a cam 151; as indicated in Fig. 6, and this cam is adapted to actuate the spreader 37 by engaging a notch 152 at the outer end of the collar 40. By providing this notch the cam 151'is adapted to engage the inner end of the collar although this end is at that moment abutting against the inner face of the gear wheel 24. The function of this spreader is to spread the end of the receptacle body which is to form the mouth of the receptacle so as to facilitate the inserting of the upper ends or heads of the receptacles after they are filled. In this connection it should be understood that the bottoms or lower heads of the receptacles are adapted to'be inserted at the other end of the mandrel. The mechanism for this purpose is not illustrated and doesnot form a part of the subject matter of this patent. However, the cases 22 have been illustrated with laterally projecting crimper guides 158 at the outer ends thereof, and these crimper guides are useful in guiding the crimpers that crimp the ends of the body after the cases are closed about the mandrels and before the drying of the adhesive is complete;

As illustrated in Fig. 1, the gas tube 149 is curved. -In practice this tube can be extended completely around adjacent the under side of the spider if necessary so that the heatingor-drying operation can be extended over a considerable time. i.

I provide means for opening the crises so as tovpermit the receptacle body to be withdrawn from the mandrel. For this purpose, the frame is provided with an exten-' sion 154 with a cam shoe 155 pivotally attached at 156 to a bracket 157. "This shoe is pressed outwardly by a spring'158and presents an inclined face 159, which. lies in the path of the tails of thelatches 54jas the spider rotates. In this way thelatch 6f each case is released as it comes under the shoe and the case then .falls open by gravity, and it also slides down in its supporting bracket 64 to a-depressed position with respect to the mandrel above it.

On the frame extension 154 I 'attach a cam 160, which is adapted to en age the roller 45' so as to retract the sprea, er 37. As indicated in Fig. 9*, the collar 40 is provided with a longitudinal slot 161 and a pin 162 is provided on the wedge sleeve 29 which passes upwardly into this slot, so that when the spreader 37 is retracted the pin 162 strikes the end of the slot 161 and retracts the wede sleeve at the same time. By reason of t is slotconnection it is possible to advance the wedge sleeve without the spreaders being advanced, thisoperation be- I ing effected by the

cams

148 and 151 respectively. j

The machine is driven by means of a belt pulley 163 having a pinion 164 which drives a large gear 165. This large gear 165 has a rigid pinion 166 which drives a gear swheel 167, and this gear wheel drives the aforesaid feed cam through a shaft 168. The cam shaft 69 is driven through an idler gear wheel 169 meshing with the gear 167 and driving the gear wheel 170 rigid with the shaft 69. The general mode of operation of the entire mechanism described will now be set foal The spider 16 is given a; step by stop motion through the arm 72' and the link 77 actuated by the cam 75. In this way the arms 18 are brought successively into position under the cam shaft 69. The pawlS 82 and 83 cotiperate to lock the spider in a fixed position when it is not being advanced.

Y As each mandrelpasses under the shoe' 155 the shoe strikes the latch 54 of the mandrel and releases it so that the case drops down and opens itself as indicated at the second arm from the extreme right, as viewed in Fig. 1. When the arm passes from this position to the next position to the left, that is, to the first position before coming under the shaft 69, the blank 90 is advanced by the.

feeding device so as to present its forward edge under the grippers 47. The sliding dog 98 is then oper t automatically by the toe of the cam 91, so as to engagethe trigger 50-and close the grippers on the blank, The

mandrel is then advanced into position under the cam shaft, and the cam 71 re-.

strikes the triggeri fvThen thecross head 130 rises and closes the c'aseabo'ut the mandrel with the blank wrapped'thereabout. As the mandrel proceeds from under .the cam shaft 69, the cams148 and 151 operate respectively to expand the mandrel and advance the spreader into the mouth of the receptacle body and thecase is then subjected to heat generated by the heating pipe 149. As the case is raised under the operating mandrel under the shaft 69, the latch 54of the case strikes the member 121 and this raises all of the rollers out of the way 'so as to permit the case to close in the manner described. As

the cross head 130 rises the springs 146 close the cover sections of the case, the righthand' one, as viewed in Fig. 1, being closed first.

These prings 146 strike the inclinededges 61 of e closing lugs for this purpose.

On account of the hinges '19 and the beveled faces 51 the bottom sections '51 and 51 tend to hang apart when open and thls facilitates applying the cases to the man- 5 drels.

In Fig; 13, 21 indicates the blank from which the finished receptacle 21 is produced, having the form shown in Fig. 12.

Having described my invention what I claim as new and desire to secure by Letters Patent is: i

v. 1. In mechanism of. the class descri ed, a mandrel having corners and having means for holding a blank of stiff material there- 15111301], means for wrapping a blank around the mandrel, a plurality of pivoted arms of diiferent lengths for bending the blank at the the corners of the mandrel so as to engage the side faces of the n'landrel, and adapted to withdraw bodily to permit the said-corners to pass. t

i 2. In mechanism of the class described, a mandrel formed in sections, means for rotating said mandrel to wrap the blank thereupon, a caseadapted to receive said mandrel with the blank wrapped thereupon, means for applying said case to said mandrel to envelop said mandrel and said blank, and means for-expanding said mandrel within said case.

3. In mechanism of the class described, a mandrel having means for securing a blank thereto, means for rotating said mandrel to wrap the blank thereabout, a case adapted 'to' envelop said mandrel and the blank wrapped thereabout, means for applying said case to said mandrel after the blank is wrapped thereupon, means for applying an adhesive to the blank before advancing the semi: to

0 said mandrel, and means for expanding [said wrap the blank thereabout, a case adapted to to the blank before advancing the same to 0 blank 'on said mandrel whengfbeing rotated,

mandrel within said case.

4. In mechanism of the class described, a mandrel having means for securing a blank thereto, means for rotating said mandrel to,

envelop said mandrel and the blank wrapped thereabout, means for applying said case to said; mandrel after the blank is Wrapped thereupon, means for applying an adhesive said mandrel, means for expanding said mandrel within said case, and ,yneans for drying the adhesive after said blank is Wrapped, to dry the same.

5, In mechanism of the class described in combinatom'a mandrel having means for securinga blank thereto, means for rotating saidimandrel to Wrap said blank theii'eabout, resilient presser devices fort holding the means for withdrawing said presser. devices,

a'case, and-fmeans for applying said case to Inmechanism of th said mandrel, fte aid blank is wrap d thereaba h v presser rollers for holding the blank on said mandrel when being wrapped thereupon, a case'adapted to be applied'to said mandrel and having movable cover sectionsadapted to come together to close said case about said mandrel, and means for Withdrawing said presser rollers top rmit said cover sections to come together ab at said mandrel.

7 In mechanism of the class described in combination, a mandrel, grippers mounted on said mandrel adapted to clamp the edge of the blank, means for opening, said grippcrs to receive said blank, means for closing saidi'ggrippers to hold the blank, means for rotaiing said mandrel to wrap the blank thereabout, a case adapted tobe applied to said mandrel after] said blank is wrapped thereupon, said mandrel being formedi in sections, means for expanding said mandrel within said case, and means for releasing said grippers from the wrapped blank.

*8. In mechanism of the class described, a mandrel, means for wrapping a blank thereabout to form a receptacle body, a spreader slidably mounted on said mandrel, and

said wh el with a step by step movement to bring said mandrels respectively into-their operative position, amember for normally locking said mandrels positively against rotation, means unconnectedwith themandrel to actuate said member and release said locking means at said operative position, and means for rotating saidmandrels when unlocked to wrap a blank thereupon.

10. In mechanism of the class. described, wheel, a plurality of mandrels rotatably mounted thereupon, grippers carried by said mandrels tidapted to receive the edge of a blank, automatic m ans for actuating said grippersto clamp tie blank, means for advancing said wheel with a step by step move ment to? bring said mandrels successively into their-opera tive position,-'meapsjor norm mally locking said mandrels against rotaftion, means for releasing said mandrels so that they may rotate, means for rotating said mandrels when in their operative posi tion to wrap the blank thereabout, means for releasing said grippers after the blanks are 'wrapped on said inandrels, and means for impressing the form of the mandrel on the blank after the" same'is Wrapped thereabout. v I j 11,. Inmeclianism 0:)":"the class described, a Wheel, a plurality of mandrels;mounted P Es -Im S carried by said man e class-descr1bed m drel s adapted .tor'receive the edge of a blap'a,

are wrapped on said mandrels, and meansfor impressing the form of the mandrels on the blank after the same is wrapped thereabont.

- 12. In mechanism of the class described,-

a wheel, a plurality of mandrels rotatably mounted thereupon, grippers carried by 'said mandrels adapted to receive the edge of a blank, automatic means for actuating said grippers to clamp the blank, means for advancing said wheel with a step by step movement to bring said mandrels successively into their operative position, means for normally locking sai'd mandrels against rotation, means for releasing said mandrels so that they'may rotate, means for rotating said mandrels when inv their operative position to Wrap the blank thereabout. means for releasing said grippers after the blanks are wrapped on said mandrels, means for impressing the form of the mandrel on the blank after the same is Wrapped thereabout, and a spreader ring slidably mounted on said mandrel andiadapted to spread the mouth of the wrapped blank.

13. In mechanism of the class described, a wheel, a mandrel rotatably mounted. in said Wheel, a case mounted on said yvheel and adjacent to said mandrel and having hinged cover sections adapted to close over' said mandrel, said case being arranged to expose said mandrel when open, means for Wrapping a blank about said mandrel, means for advancing said case to envelop said mandrel and the wrapped blank thereabout, said case'being of angular form, said mandrel being formed in sections and having means for pressing the wrapped blank into the corners of-said case. s

14; In mechanism of the classdescribed, a wheel, a rotatablemandrel mounted therein, means for Wrapping the blank thereabout, a caseyl'means forapplying said case to envelop said mandrel after the blank is wrapped thereabout,means for expanding said mandrel Within said case, means for applying an adheslve substance to said blank before wrapping the same on said mandrel. means for heating said case to dry said adhesive. substance, said case having a latch, and means for releasing said latch to permit said case to be withdrawn from said mandrel.

15.;A mandrel of the class described having a hodyof substantially rectangular "oral and composed of a plurality of corner scetions, means disposed within said body for forcing said corner sections diagonally outwardly, to expand said mandrel in all directions, and a case adapted to envelop said mandrel. I

16. A mandrel having a body with flat side faces, said body being of substantially rectangular form in cross section and being divided on said flat faces longitudinally so as to form a plurality of corner sections, an inner member, means for attaching said corner sections to said inner member, and means for expanding said mandrel by forcing said sections diagonally outwardly to expand said mandrel in all directions. v

17. A mandrel having a body of substantially rectangular cross section having fiat side faces, said body being divided longitudinally so as to form corner sections, an inner member, fastening devices applied at said corners for securing the sections of said body to said inner member, a case of Substantially rectangular cross section adapted I to envelop said body. and'means for expanding said body to force the corners thereof into the-corners of said case.

18. A mandrel having a body of substan tially rectangular cross section having corners and divided longitudinally so as to form sections corresponding to said corners, an inner member, means for attaching said sections to said inner member, a sliding sleeve mounted on said inner member, and affording means for forcing said sections outwardly to expand said body.

19. A mandrel having a body adapted to have a blank wrapped thereabont and a case divided longitudinally to form sections,said' sections being jointed together, means for opening said case, and means for applying said case to said mandrel.

20. 'A'mandrel' adapted to have a 'blank Wrapped thcreabout. a case having a bottom divided longitudinally to form bottom sections, a member supporting said bottom sections and having a hinged connection thereto. said member affording means for supportingsaid bottom sections in a depressed position and tending to separate from each other. said bottom sections having sides formed integral therewith. cover sections attached to said sides. and means w an inner member, means for attaching said sections to said inner member, a sliding sleeve mounted on said inner member and affording means for forcing said sections outwardly to expand said body, and means carried by one of said sections for securing a blank thereto.

' 22. A mandrel having a body of substan tially rectangular cross section having cor-' fierSand divided longitudinally so as to form, sections corresponding to said corners, 5 an inner member, means for attachin said sections to said inner member; a siding sleeve mounted on said inner member-and aflfordin' outward y to expand said body, said mandrel being adapted to have a blank wrapped thereupon to form a receptacle body, and means modnted on said mandrel for expanding the mouth of said receptacle body. 23. In mechanism of the class described, 15 a mandrel, means for wrapping a blank means for forcing said sections about said mandrel to form a receptacle body, a case formed in'sections, means for appl ingsaid case to said mandrel-after the lank is wrapped thereabout, a latch carried by said case for holding same closed, 20 and automatic means for releasing said latch to' open the case. n

. In witness that I claim the foregoinp I have hereunto subscribed my name t HIS 12th day of February, 1910.

GEORGE W. MAXWELL.

' Witnesses: EDMUND A. STRAUSE,

ETHEL COLEMAN.