Патент USA US2403644код для вставки
y July 9, l946.~ l x I ¿ ` c. E. EMMgR 'K ' MACHINE FOR FORMING PLASTIC B_*IN‘DEÈRS- Filed Jan. 2. 1943l ' 2,403,644 I ' l. v2 sheets-sheet A:L " FII/'E2 12:2_7 Civ/1245s ¿Zw/neo 5015.6. July 9, 1946. ' c. È. ÉMME'R ` ' '2,403,644 MACHINE Fon FORMING PLASTIC BINDERS _Film1 Jan. 2,_ 1943 ` 2 sneaks-sheet 2 / l ze 42 6 l 34 CHnn'LEsÁ-awaeo 51H58. y 2,403,644 Patented July 9, 1946 UNiTED STATES IPA;"fr/.F.èlrr OFFICE’ MACHINEFORFORMING PLASTIC EINDE-RS Charles >Edward Emmer, Chicago, Ill., assigner to General Binding Corporation, Chicago, Ill., a corporation of Illinois Application January 2, 1943, Serial Neo.v 471,174 (01; L12x-_19) 16 Claims. v 1 . Y .forming of the article blank as sections thereof This invention relates to an apparatus for >more efficiently manufacturing curled articles from vare subjected 4to heated and >cooled instrumen synthetic plastic materials.v talities. It is furthermore an object of this invention to ' ' The present invention, more specifically, per tains to a machine for quickly and .efliciently pro vprovide a manually operable machine for facili tating the >carrying out of an improved Iplastic ar ducing a binder or a curled article from thermo ticle producing method in a manner well adapted .to meet modern quantity production require ' plastic’ material, such asY Celluloid, pyroxylin, “Vìnylite,” “Ethocel”, and other modern- plas tics, and more particularly to such a machine .as ments. - , ~~ may vbe used for forming a comb-shaped -or 10 Itis an important object of this invention to provide simple and effective means for accurate branched lblank into a binder or Vthe. like, by ad ly feeding and preheating preformed selectively vancing the lblank on a carrier .between forming shaped `synthetic blanks to have advance por elements one of which vis carried on and rotated ' tions of »the blanks subjected lto a hot treatment by the carrier while another coacting element while thek trailingportions of. the blanks remain timed to operate with the carrier, subjects the only preheated as the treated 'blanks are being advancing blank to preheated and hot treatments as the blank is curled .into a. predetermined forrm. curled and shaped. ' _ Other and further important objects of the in. vention will be apparent .from the disclosures in The thermoplastic material from'which selected shaped article forming blanks are stamped or cut, is such that it becomes lplastic when heated, to permit the same to be formed into Ya'predeter mined shape and permits such shape to` be re tained when the shaped blank cools andsets. It is an yobject of this invention to provide an Ythe specification and the accompanying drawings. In the drawings: ' Figure lis a fragmentary plan viewof one se lected design -ota preformed blank of plastic material from which a binder is formed in a form apparatus for treating and shaping synthetic .25 ing machine embodying :the principles of this in thermoplastic material into a useful article of a ' given configuration. l the formed binder .resulting lfrom the shaping of Another object of this invention is to provide an apparatus with an improved combination heated ythe selected design of blank shown in Figure 1. and cooled element for use in the fabrication -of ..30 plastic articles. vention. ». Figure .2 is a .fragmentary elevational view of . ’ ~ Still another object ofthe invention .is to soin terrelate feeding and heating instrumentalities of a machine for vfabricating plastic articles from synthetic sheet materiaLthat said instrumentali ties will operate in proper timed sequence Vtoeffect >the desired shaping and forming of the desired Figure 3 is a transverse sectional view of the binder taken. on line IDI-III of Figure A2. Figure 4 is a side elevation-al view of the `binder making machineof this invention with Ythe binder forming arbor cradled in the feed belt in blank 235 .receiving position. Figure 5 is afragmentary top plan view of the machine. Figure V6 is a vertical sectional view taken on line of Figure 5 showing the retracted Itis 'a further object of the invention to provide a machine ywherein preformed synthetic mate .40 normal position of the feed .belt and 'arbor -cradli-ng control in dotted lines. rial blanks are advanced and coiled `by a carrier As _shown in the drawings: as the blanks are first preheated and are jthen sec The machine shown in the drawings is of the tionally subjected to hot and warm treatments hand> oper-ated type, but maybe mechanically op by mechanisms timed to coact and operate with 45 erated if desired. -The machine is designed >to the carrier. ~ ` take a preformed blank, design-ated as a whole Another'obj ect of this invention is to provide a machine for curling: and -forming synthetic arti- Y by the reference numeral I, and made of Celluloid articles. f , lcles of different sizes, without requiring any ap .or other thermoplastic material and shaped as preciable amount of Work otherthan the substi @illustrated in Figure -1, and to form said blank tution of different sized freely .replaceable form 50 into a substantially tubular or curled »shape as ’ shown inrFigure 2. The blank `I is preformed by cutting or stamping the >same from a 'strip of ing elements. v ' . kStill another object of the invention is to pro vcelluloid »or .other thermoplastic sheet material. The -blank I is comb-shaped and comprises a cradle and >rotate an element for the shaping and 155 >back orspine 2 having aplurality‘ of spaced par vide van article making vmachine wherein a ñex- - ible vcarrier for advancing .a blank .is operable to 2,403,644 3 4 allel fingers or ribs 3 extending Iperpendicularly to one longitudinal edge of the back or spine 2. In the completed forni of the binder shown in journal block 25 (Fig. 4) which is slidably dis posed in a guide slot 25 formed in a supporting head 2l which is integrally formed at the sup ported end of a lever 23. Each lever adjusting screw 28 is adjustably threaded through the lever supporting head 21 and through the journal Figure 2, the back extends longitudinally of and overlaps the ends of the fingers 3 which have been curled into rings 4 and which may be substan block 25 as Well as diametrically through the lever ` tially circular or have some other rspecial shape. Referring now to Figures 4 to 6, inclusive, the hand operated machine for making the binders comprises a pair of spaced side frames 5 which are joined together by suitable tie-bolts 6. The side frames 5 are adapted to be mounted on a -supporting stud 24. This arrangement permits the levers 23 to be adjusted for varying the ef fective lengths of the swinging levers 23, thereby w affording an arrangement for the accommodation of ldilîerent lsized binder forming arbors. Each . of the, control levers 23 is provided with an ex suitable support or base having a trough for re ceiving the belly or sagging bottom portion of ‘ -tension arm 29 which carries a handle 30. a belt hereinafter referred tof The front ends _Seated transversely upon the horizontal por of the side frames 5 are provided with integral inclined arms or brackets 'I~provided-w-ith guide tion of the endless Ibelt or apron I4 near the in ner end of the supporting table I5 is a free or slots 8 in each of which a slidable bearingblock 9_ floatingy cylindrical forming arbor 3I the ends of which project beyond the sides of the belt or is engaged. An adjusting screw Il) is threaded ,through an end member of a frame arm -I and 20 apron I4. One end ofthe forming arbor 3I is provided withy a knurled headl or handle 32 per has threaded engagement with the bearing 4block mitting convenient removal of the arbor 3I from r9. A control spring II is engaged around each the belt after a binder forming operation of the of the adjusting screws I0 within the slots Y8 as shown in Figure 4. - ` machineA to permit removal of a curled article -‘Disposed between'the frame arms 1 is a pres 25 from the arbor. ~ - sure roher I2 having supporting stems which are vIn the normal or released position of the con rjournaled in theslide blocks 9. Coacting with rthepressure roller I2 is a belt or apron guide trol levers 23, as indicated in dotted lines in Fig roller I3 over which a blank carrying and feed belt or apron I4 is engaged. The belt or apron ' from the raised position of the control roller 22 `I4 is formed of'cloth‘or other'suitable `material then extends horizontally over the supporting table I5. To normally p_osition the binder form ing arbor SI-ready for a binder forming opera tion, the control levers 23 are adapted to be man kand is of endless construction as clearly illus trated in’Figure 4. The belt `is positioned be ' tween the machine side `frames 5j over the guide ure 6, the endless belt f I4 extends downwardly and’passes underneath the forming arbor 3l and froller I3> and passes'rorwardly- into the machine 35 ually swung downwardly from the dotted line over a supporting table or top I5 having side flanges, I6 which project downwardly on the in -ner sides of the upper-margins of the side frames position of Figure 6 into the full line position, thereby causing a portion of the belt to loop around the major portion of the forming arbor to form a retaining pocket or cradle for the arbor. '5 andy are secured thereto by bolts I'I. The top In the cradled position of the' arbor 3l as indi 'surface of the table is thus positioned'flush with 40 cated in full lines in Figure 6, the arbor is swung the upper edges of the side frames 5, thereby per into pressing relationship with the control roller fmitting the continuous belt 4to ride over the table 22 and is also positioned directly above a combi "in a plane above the top edges of the side frames. The belt or apron I4 extends downwardly over nation heated and cooled blank treating element 'the guide roller I3 and hangs or sags between 45 or mandrelwhich is of cylindrical form and of a diameter materially larger than the diameter of „the side~ frames 5 with the lower belly portion of ¿the belt projecting down into the trough provided Ain the support on which the side frames are mounted. At the rear portion of the machine the endless beltl or apron extends upwardly to passif around one side of a guide roller I8 the reduced the varbor 3I with which the cylindrical mandrel is positioned to coact. The combination heated and cooled element or mandrel is positioned transversely between the machine side frames 5 and is provided with axial shaft portions which are journaled in suitable bearing openings pro vided in the machine side frames. One of the mandrel shaft portions is indicated by the refer Iends of which are journaledrin suitable bearing openings provided in the side frames 5. The end less belt I4 continues upwardly _at the rear end of the machine and passes over a driving roller 55 ence numeral 32 and is provided with an axial passage leading into an inner heating chamber I9 the reduced ends-of which‘are journaled~ in suitable journal openings provided in'upwardly 33 to `permit steamer any other suitable heating extending 'rear arms or brackets 20 which are medium to enter the chamber 33 from a supply tube or pipe 34 which has one end connected to a integrally formed on the upper rear portions of VVthe side frames 5.' Also rotatably mounted be 60 heating source and the other end projecting into the mandrel shaft 32. tween the upper 'ends _ of the ` frame arms or The vimproved combination hot and cold brackets 2li above the driving roller I9 is a pres mandrel consists of a heating segment 35 con sure roller 2| Vthe reduced ends Aof which are taining the heating chamber 33 and -a smaller mounted in slidable bearing blocks forming part of »roller adjusting means similar to the roller ad 65 air-cooled or unheated 'segment' 36. The justing means described in connection .with the segment 3B is'p'referably formed of steel and is `in the`> shape of a cylindrical segment and is Vpressure roller I2.¿ The continuous belt or apron provided with a plurality of parallel Ventilating I4 passes over the driving roller andl beneath the vor cooling passagesY or slots 31. The segment 35 pressure roller 2I and then passes downwardly t may become slightly preheated by the heat from rengage around a belt control roller 22.` Y Y The reduced supporting ends of the control the h_ot segment 35 but the effect of the air 'passages 3'I tends ¿to reduce the temperature 0f -roller 22` are rotatably vjournaled in a pair of levers 23 which are journaled on stud 24. >The thesegmentï36 so that the same may serve as a meansv for cooling or maintaining'the trailing ~studï24 foreach o’f'themleve'rs 23 is rotatably -supported in aside frame'5 and projects‘into a' 75 portion of a blank `at its preheated temperature andere A5 r6 -t'rolrroller 22 to move into its lowermost position', during- an article forming operation. The'major portion of the-hot and cold Vcylinder or mandrel which is determined by vmeans of sto-p fingers orV lugs' 50 which are integrally formed on the outer - is preferably constructed of brass or copper and side _surfaces ofthe side frames 5 as shown in Fig uref4. AWhen the control levers 23 are swung into comprises Athe cylindrical segment 35 which includes the heating chamber 33 and is rigidly the- lower positions the'belt I4 is caused tofloop or integrally joined' with Vthe minor cylindrical1 around the forming arbor 3|V to form a pocket or segment 35y to form a cylindrical element. cradle for the arbor and to'properlywtension the The combination heated and air-cooled sec section of the endless belt or apron around said tional element or mandrel is positioned to permit the apron or belt I4 to pass over the cylindrical y10 arbor and move the arbor 3| into pressing rela-tionship> with the roller 22, ready for a binder surface thereof between the mandrelv and the forming arbor when the mandrel is rotated to forming operation. ' ' ' -- -" To vform a `tubular type of plastic binder from one of the thermoplastic forms or> blanks I, "a cause proper conditioning of a binder forming blank during the shaping of the same. For the purpose of causing rotation of the 15 blank is laid upon the top horizontal portionf'oî the belt I4 above the table -I5 in-a transverse Vposition as illustrated `in- Figure 5,'Y withthe shaft portion 32 has a sprocket 38 secured fingers or ribsV 3 of the blank projectingftoward thereon. Engaged over the sprocket 38 is a the forming arbor 3I and with the back or' spine 2 driving chain 39 which extends downwardly and is engaged around a small driving sprocket 40 20 of the blank disposed transversely of the belt with the lfree longitudinal edge of the blankback which is keyed or otherwise secured on a rota or spine 2 in contact with the frontl edge 0f a table stub shaft 4I which is journaled in a blank positioning follower or stop-bar 5I. -«The suitable bearing provided in one of the side follower 5I is seated upon the top surface of lthe frames 5. Also secured on the mandrel shaft 32 to -the inside of the sprocket 38 is an inner 25 horizontal section ofthe apron I4 and is provided with downwardly- projecting end vflanges 52 sprocket of the same size «as the sprocket 38 and which project downwardly tothe Aoutside -of the around which a drive transmitting chain 42 is upper marginal side surfaces of ther two machine engaged. The-chain 42 extends diagonally up heated and air-cooled combination mandrel, the wardly and'engages around'an upper sprocket 43 side frames 5 to serve as guides when the -bla'nk positioned to' be removably engaged to Project the machine manually engages vthe handlesí‘53 apertures 48 provided »in an arc-shaped bar 49 bar forwardly over the machin'eázth‘er'ebypushing the blank and moving the front' or'outer Iends which is secured onr the` shaft section 44 of the 30 positioning follower or stop-bar 5I' is moved forwardly or rearwardly on the» machine' by driving roller I9. . ' . means ~of a pair of knobs or handles'r53 or when For the purpose of operating the driving chains the follower is carried along by the advancing 39 and 42 to transmit -a drive to the hot and belt to serve as a stop for a ‘blank‘ as” it is cold mandrel and to the driving roller I9, a crank » handle 45 is secured on the stub shaft 4I. The la5 yadvanced vtoward the arbor 3|. With a plastic blank I positioned upon the. top crank handle 45 is provided with a spring con of the feed apron I4 above the table I5', inthe trolled knob or head 4.6 and> includes a shiftable position iuustrated in Figure 4; the operator>- of pin or stem 41 the inner end of which is into any selected one of a plurality of receiving 40 of the 'blank positioning bar 5I’ andy pushes' the which is secured on the outer face of the lower corner portion of the machine side frame 5 on ofthe blank fingers or ribs ilV below the belt con; - trol roller Z2 into the position shown in full ‘lines which the sprocket supporting stub shaft 4I is mounted, as clearly illustrated in Figure 4. The apertured segment shaped bar 49 .is pro' videdfor `the purpose ofnormally setting the position of the heated and air-cooled mandrel vto have the heated and cooled segments of the mandrel properly positioned to coact with different portions of blanks while being formed and for positioning the mandrel Awhen different sized forming arbors `are’fused in the machine for the purpose of producing- binders of different in Figure 4. The advance of the blank lby the ~ operation' of the crank arm 45 then moves the ends of the blank'ñngers’ß into engagementiwith thev lower- portion of the forming'arborl'3-I and labove the cylindricalsegment 35 of. the mandrel. tó The blankv as it isV advanced into forming 'position becomes slightly preheated and is' thusk condi' tioned and positioned ready to have Vthe blank »fingers or ribs 3 heated to a desired temperature in order to make the` lingers or ribs plastic Vto When a diñerentV sized binder is to be e facilitate curling and forming.y For the purpose produced the control levers 23 have the pivotal supporting points thereof adjusted'by means of the adjusting screws 28 for varying the effective pulled outwardly to release the stem 41 from a sizes. of >curling the blankthe ’crank arm knobï46'is selected aperture of the bar 49, thereby permit ting the crank arm 45 vto be Ámanually rotated a lengths of saidl levers for the accommodation of l co number of revolutions, determined bythe ratio a selected size of forming arbor 3l. In the operation of _the machine, the forming arbor 3l rests transversely on the belt I4 above the combination heated and air-cooled mandrel,l the heated and cooled segments of which are of the sizes of the driving sprocket V48 with rel positioned as illustrated in Figure 6 for a par ticular size of arbor. ~ Said mandrel is held in dre1.shaft,'so that the hot segment 35 of the mandrel is brought into contact with the ylower surface of the horizontal' portion of the belt .I4 directly below the fingers or ribs v3 of the blank such position by the crank arm 45 'which has the crank arm control pin or stem 41 engaged in a selected one of the openings 48 of the bar »49. . spect to the driven sprocket 38. TheÍrotation of . theV driving sprocket 40 operates the `'chain 39 and thereby rotates the sprocket 38' on theman to further heat the same as they are advanced For the purpose of'holding the forming arbor in into the -ñeld of operation of the formingarbor position above the sectional heated and cooled 3|', which is caused to rotate by the movement mandrel, for a binder forming operation, the of `the belt> which is operated by `means ofthe control levers 23 are Vmanually swung from the dotted line position of Figure 6 into the full line y75 `driving roller >I9 and receives its'drîve from the position ¿of Figure 6, thereby causing the beltoon chain v42 «which is simultaneously ¿operatedëwith 2,403,644 7 8 . the chain 9, due to the operation of the crank and cross section has been illustrated and'de handle 45. As the forming arbor 3| is rotated and pressed scribed for use in connection with the improved binder forming machine, herein disclosed, it will toward the roller 22 by the looped portion of the of course be understood' that forming arbors of belt as the belt is advanced the heated blank diiferent'sizes and-shapes may be used to provide binders of desired shapes and sizes. ' fingers or ribs are softened and caused to curl around the forming arbor between the arbor and It will of course be understood that various the belt to form the binder rings 4. As the heated details of construction may be varied through a wide range without departing from the principles fingers of the blank are being formed into the binder rings 4, the back or spine 2 of the blank 10 of this- invention, and it is, therefore, not the is advanced by the belt into the ñeld of opera purpose to limit the patent granted hereon, other tion of the air-cooled segment 36 of the mandrel wise than necessitated by the scope of the ap pended claims. which at this stage of the operation is rotated into position to engagebeneath the `apron and I claim as my invention: , 1. In an apparatus for forming coiled plastic below the blank back or spine 2 to allow that por tionY of the blank to remain only at its preheated articles, which apparatus includes a support for temperature as it passes between the forming a plastic element to be coiled, a rotatable heated arbor and the mandrel to be slightly curled and and air vented presser element below the sup positioned to overlap the ends of the binder rings port, and operating means for the support and 4 to complete the curling or forming of the blank said element for moving the support relative to to produce a plastic binder. the rotatable presser element, to move the plas During> the forming of a binder the forming tic element over said heated and air vented presser. arbor ‘,3I, due to the weight of the belt control roller 22 and the levers 23, causes tensioning of 2. In an apparatus for forming coiled plastic the belt around the arbor so that the arbor ex 25 binders, which apparatus includes a movable end erts a downward pressure toward the heated less support for a plastic element'to be coiled, and _air-cooled mandrel to cause pressing of the a rotatable combination heated and air cooled blank between the pressure mandrel and the element below the support, a former carried by forming arbor as the blank is being formed, the support, and means for operating the heated By the time the lingers of the blank are curled 30 and air cooled element and saidsupport to cause around the forming arbor and the back or spine operation of the former by the support and move portion 2 of the blank has been subjected to the ment of the plastic >element over the rotatable effects of the air-cooled segment 36 of the man heated and air cooled element and around the drel, the binder rings 4 cool sufficiently to set and former to coil the plastic element into a binder. lose their plasticity but retain their curled flexible 35 3. In an apparatus for forming coiled plastic shape necessary to form flexible rings for the articles, which apparatus includes a movable end finished binder. less support for carrying a plastic element to be When the binder is completely formed the ma-l coiled, a Vheated segmental element having cool chine ls stopped with the back or spine portion 2 ing' vents> in one segment thereof, said segmental thereof being positioned to rest above the air 40 element disposed below the support, a forming cooled mandrel segment 36, so as to avoiddefor >mation or over heating of the formed binder ele ment, that would be caused if the formed ele ment came to rest on the heated segment 35 of 45 the mandrel. means resting on the support, a pivoted control means operable for cradling the forming means in the support, and means for rotating the heated element and moving said support to advance the plastic element ' for compression between the To remove the binder carrying arbor from the machine it is only necessary to manually swing the control levers 23, by means of the handles 30, from the full line position of Figure 6 back into forming means and the heated element and also cause rotation of the forming means by the sup port to coil the heated plastic element around the forming means to form a plastic article. they normal dotted line position, thereby causing 50 4. In a machine for forming coiled plastic the loop portion of the apron to be unwrapped binders, saidV machine including a support for from the arbor to release the same. The released supporting and’advancing a plastic element to arbor 3l may now be removed from the machine be coiled, a forming means on said support, a by means of _the knurled handle 32, and the com combination heated and ,cooled presser element pleted cooled binder formed on the arbor may 55 below the support, and means for moving and be slidably ejected therefrom. By replacing the wrapping the support on the forming means to arbor upon the belt in the position shown in Fig advance the plastic element for compression be ure 4 the binder forming operation of the ma tween the forming means and the heated and chine may be conveniently and rapidly reheated cooled presser element-and to coil the plastic for the forming of subsequent binders in rapid 60 element into a binder as the heating and cool succession. ing treatments are applied thereto. K n g 5. A plastic binder forming machine compris shown in the drawings, provision has been made ing a framework,~ av table supported thereon, a for replacing this mandrel with other mandrels movable support on- said Ytable for carrying a of different diameters in order that binders of 65 blank to be coiled, a"heated and cooled seg mental element rotatably supported on the frame different sizes may be made. When arbors of work,. a forming arbor on the movable support different sizes are substituted, the selected sized roller or mandrel may have the heated and air positioned to coact with -said element, and means cooled segments thereof properly positioned with for rotating the element and moving the mov respect to the arbor 3| by proper operation of 70 able support to advance the blank over the ele the crank arm 45 with respect to the apertured ment to subject the same to heat treatments and ^ segment-shaped bar 49, for causing proper posi coil the treated blank around the forming arbor. 6. A plastic binder formingvmachine compris tioning and coaction with the binder blanks be While only one size of forming arbor has been ing fed into the machine. ' ~ While a round forming arbor-’of a selected siz _ing a framework, a table supported thereon, a 75 traveling support on said table for carrying a 2,403,644 1,0 'element andtosubjectone- portion of the blank tothe heated segment to further heat the same and-then vsubject¿anotherportion of the blank blank to -be >coiled,„a_combinationV heatediand cooled segmental element -rotatably- ;supported _on the framework in contact with _the support, a forming arbor removably supported on the rmov to the cooled segment of thev pressure element and curl the treated blank ,around the forming able support and positioned to- coact with the arbor to produce a binder which is removable heated and cooled segments of ysaid element,` yfrom the forming arbor when the controlm'eans means for looping the movable support around is swung away from the table vto cause the flex the forming arbor„ and kdriving mechanism for ible support to release the formingarbor, rotating the element and for operating the mov able support to advance theV blank vin timed xv, 10. ,A ‘plastic’ binder.î forming machine compris ing-'a framework, a `tabley supported thereon', a relationship over. the heatedr `and cooled seg movable-flexible endless support, means on the ments of the element and coil> the treated ,blank around the forming arbor to produce a binder. ' framework Vfor `supporting the flexible support with‘a portion -thereof passing over the table, a 7. A-plastic‘binder forming machine> compris 1 ing a framework, a table supported thereon, »a follower Y supportedaon» the> flexible support above movable' endless flexible support on said '_table `for carrying a blank'to be coiled, a combination ' on Athelyflexible supporta sectional heated vand heated >and cooled. segmental 'element rotatably cooled pressure element rotatablysupported on the frameworksV and >coacting :with »'theflexible supported on the framework, a forming arbor the table for properly positioning a plastic blank carried by> they flexiblesupperti above said ele 20> supportgaformingïarbor free toïrîoll‘ onlthe ilexi ble support 'above the pressure element, Vva con ment, adjustable control means pivotally mounted trol element pivotally mounted on the frame on the framework and engaging the movable work and engaging the flexible support 'and ’op support and operable to loop a portion of the movable support around the forming arbor, and , driving means for rotating the heated and cooled segments of the element and for operating the movable support to advance the blank over the heated and cooled segments of the element and coil the blank around the forming arbor to form erable to cradle the forming arbor in a portion of the flexible support and hold the Same above the pressure element, means for adjusting the control element to permit forming arbors of dif , ferent sizes to be used in the machine, and a driving mechanism on the framework for rotat a binder which is removable-fromrthe forming 30 ingtl'ie pressure element and for operating the endless flexible support to advance the plastic arbor when the adjustable control means is oper blank and move the same over the heated and ated to unloop the belt to release the forming cooled sections of the pressure element and coil arbor. y 8. A plastic binder forming machine compris ing a framework, a table supported thereon, a movable flexible support on said table for carry - ing a blank to be coiled, a blank preheating pressure element rotatably mounted on the the blank around thevforming mandrel to pro duce a binder which is releasable from the form ing arbor when the control element is swung into release position to free the forming arbor. 11. A plastic binder forming machine compris ing a framework, a table supported thereon a ments; a forming arbor removably supported on 40 movable flexible endless support, means on the framework and including heated and cooled seg the flexible support above the pressure element, a control means pivoted on the framework en gaging the flexible support and movable about a stationary pivot into a position to loop- a portion of the flexible support around the forming arbor, and a driving means for operating the rotatable pressure element and for driving the flexible framework for supporting the flexible support with a portion thereof passing over the table, a follower supported on .the flexible support above the table for properly positioning a plastic blank on the ñexible support, a sectional heated and cooled pressure element rotatably supported on the framework and coacting with the flexible support, a forming arbor free to roll on the flexi ble support above the pressure element, a con trol element pivotally mounted on the frame the blank while retaining the remaining portion work and engaging the flexible support and op of the blank at its preheated temperature and erable to cradle the forming arbor in a portion then coil the entire blank around the forming of the flexible support and hold the same above arbor to produce a binder which is removable the pressure element, means for adjusting the from the forming arbor when the forming arbor 55 control element to permit forming arbors of dif is released by the operation of the pivotal control. ferent sizes to be used in the machine, a driving 9. A plastic binder forming machine compris support to advance a preheated blank over the pressure element to additionally heat a portion of ing a framework, a table supported thereon, a movable flexible endless support mounted to travel over said table for carrying a blank to be coiled, a follower resting on the movable sup port’above the table to provide a backstop for properly positioning the blank on the movable support, a blank preheating presser element ro tatably supported on the framework and includ ing heated and cooled segments adapted to be consecutively brought into engagement with the movable support, a forming arbor removably resting on the movable support above the pres sure element, a pivoted control on the framework' and engaging the flexible support adapted to be swungr toward the table to cause a portion of the flexible support to be looped around the form ingarbor, and means for rotating thev pressure i element and for operating theflexible supportV to advance the preheated blank over the pressurel mechanism on the framework for rotating the pressure element and for operating the` endless flexible support to advance the plastic blank and move the same over Ythe heated and cooled sec tions of the pressure element and coil the blank Y around the forming mandrel to produce a binder which is releasable from the forming arbor when the control element is swung into release posi tion to free the forming arbor, and means asso ciated with the driving mechanism for setting »the pressure element to properly position the heated and cooled sections thereof with respect ~ to the blank being advanced when arbors of dif ferent sizes are used. _ _ . 12. In a machine for forming> co1led plast1c binders from plastic blanks, said machine includ Ying a rotatable pressure element having a heated chamber and air cooling passages therein, a flexi ble support driven thereby for carrying a plas? 2,403,644 12 ment comprising a chambered major segment and a solid minor segment having cooling slots therein. tic blank over the pressure element to cause heat ing and cooling of different parts of the blank, a forming arbor removably supported on the flexi ble support above the pressure element to coil 15. In a machine for shaping an article out the blank, and a pivotally mounted control means of material requiring the use of heat for treat engaging the ilexible support for looping and un ing the same, a cylindrical pressure element com loo'ping a portion of the ileXible support with prising a chambered major segment and a minor respect to the forming arbor t0 permit curling passaged segment, and means for heating the of the blank around the forming arbor when the chambered major segment from Within, flexible support is looped around the forming ar 10 16. In a machine for shaping an article out bor and to permit -removal of the coiled blank of material requiring the application of heat for from the forming arbor when the flexible sup treating the same, an axially rotatable cylindri port is unlooped to release the forming arbor. 13. In a machine for forming coiled plastic binders, a cylindrical pressureA element compris ing a large segment and a smaller air passaged cal pressure element made up of segments, means for heating one of said segments, means for cool 15 ing another of said segments, and means for segment, and means for heating the larger of said segments. 14. In a machine for forming a tubular binder from a plastic blank, a cylindrical pressure ele 20 rotating the pressure element to alternately bring the segments into coacting relationship with the material as the article is being formed. ~ Y CHARLES EDWARD EMMER.