US1148670A

US1148670A - Metal-bending machine.

Info

Publication number: US1148670A
Application number: US82411414A
Authority: US
Inventors: John M Fedders
Original assignee: Fedders Manufacturing Co Inc
Current assignee: Fedders Manufacturing Co Inc
Priority date: 1914-03-12
Filing date: 1914-03-12
Publication date: 1915-08-03
Anticipated expiration: 1932-08-03

Description

J. IVI. FEDDERS.

METAL BENDING MACHINE.

APPLICATION FILED MAR. 12l 19|4. Ll'm. Patented Aug. 3,1915.

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\ EY gaz/z ATTURNEY'@ I. M. FEDDERS.

METAL BENDING MACHINE.

APPLICATION FILED MAR. I2. 1914. LM270. PatentedAug.' 3,1915.

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J. IVI. FEDDERS.

METAL BENDING MACHINE.

APPLlcAnoN FILED MAR.12.1914.

Patented Aug. 3, 1915.

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l. IVI. vFEDDE-FS. METAL BENDING MACHINE. APPL|CAT10N HLED r11/111.12. 1914.

Patented Aug. 3, 1915.

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INVENTEIR tw 5MM/@Wk ATTQRNEY.

UNITED STATES PATENT OFFICE.

iTOHN-M. FEDDERS, .0F BUFFALO, NEW YORK, ASSIGNOR TO FEDDERS MANUFACTURING COMPANY, INC., 0F BUFFALO, NEW YORK, A CORPORATION 0F NEW YORK.

METAL-BENDING MACHINE.

le it known that I, JouN M. F EnpEns, a citizen of the llnited States, residing at Butl'alo, in the county of Erie and btate of New York, have invented new and useful Improvements in l\letal-Bend1ng Machines, of which the followi 1g is a specification.

This invention rel: t ys to a machine for producing plaits. folds or corrugations at inter vals ou a. strip of metal which 1s to be used for forming the water and airtubes of an automobile radiator, although the machlne may also be used for plaiting strlps of this character for other purposes.

1t is the object of this invention to provide a machine whereby plaited strips 0f sheet metal may be produced expeditiously, reliably and economically.

1n the accompanying drawings: Flgure 1 is a `side elevation of a sheet metal. plaiting or corrugating machine embodying my 111e vention. Fig. 2 is a sectional top plan View of the same with the Aupper rollers 0f the preliminary and final 'plaiting devices omitted. Fig. 3 is a fragmentary vertical longitudinal section, on an enlarged scale, taken in line 3 3, Fig. 2, and showing the preliminary and'the final plait forming devices. Fig. 4 is a similar view, on a stlll larger scale, showing only the operative portions of the preliminary and final plait forming devices. Fig. 5 is a. fragmentary vertical transverse section, on a reduced scale, taken in line 5 5, Fig. Fig. (3 is a fragmentary section, on an enlarged scale, of the upper preliminaryvplaiting roll, taken in line 6 6,

vFig. 3. Fig. 7 is a fragmentary face View of this last mentioned roll. Fig. S is a fragmentary face view of the lower preliminary plaitng roll. y Fig. 9 is a fragmentary section, taken in line 9-9 Fig. 4, showing the cooperating parts of the preliminary plaiting rolls. Fig. 10 is a fragmentary section taken in line 10-10, Fig. 4 showing the cooperating parts of the final plaiting rolls. Fig. 11 is a fragmentary sectional face View of the lower plaiting roll, the section being taken in line 11-11, Fig. 10. Fig. 12 is a fragmentary face view of the upper final plaiting roll. IFig. 13 is a detached side elevation of two adjacent shifting bars which form part of the mechanism whereby the final plaiting rolls and the parts associated therewith are operated. Fig. 14 is a fragmentary vertical longitudinal section Show- Specication of Letters Patent.

to serve this purpose.

Patented A ug. 3, 1915.

Application led March 12, 1914. Serial No. 824,114.

ing a modified construction of the means whereby the completion of the plaits in the strip of metal is effected. Fig. l5 is a fragmentary cross section, on an enlarged scale, taken in line 15-15, Fig. 14.

Similar characters of reference indicate corresponding parts throughout the several views.

Although this machine may be organized for plaiting or corrugating strips of sheet metal for producing various articles, that shown in the drawings is designed more particularly for producing plaited radiator strips which comprise a plurality of longitudinal Webs l, a plurality` of transverse plaits 2 each of which has the outer edges of its walls united while the inner edges of these Walls are connected respectively with the opposing ends of two adjacent webs, longitudinal offsets 3 formed at the o posite ends of the webs, longitudinal o sets 4 formed on opposite ends of the opposing sides of the walls of the plaits, and transverse beads 5 formed on each web parallel with the plaits and extending from one oil'- set to the other of the respective web, as shown in Figs. 4, 9 and 10.

In its general organization this machine comprises a pair of cooperating preliminary plaiting rolls to which the blank or unplaited sheet or strip of metal is supplied by any suitable means and which operates to produce a succession of partly formed plaits at intervals on the'strip, and a pair of final plaiting rolls which receive the strip from the preliminary plaiting rolls and operate upon the same to complete the formation of the plaits so that the strip is ready to be assembled with other parts for producing an automobile radiator. The working parts of the machine are mounted in a main frame 6 which may Le of any suitable construction The preliminary plaiting rolls preferably comprise a lower roll or roller 7 mounted on a horizontal shaft 8 which is journaled in suitable transverse bearings on the frame and provided on its periphery with an annular row of die grooves 9 which are arranged parallel with .the axis of this roll, and above this lower roll is arranged an upper preliminary plaiting roll or roller 10 which is mounted on a horizontal shaft 11 journaled transversely in suitable bearings on the main frame and provided on its periphery with an annular -row of longitudinal die blades 12 which are arranged parallel with theraXis of this lastv mentioned roller and are adapted `to engagzev versely in suitable bearings on the main frame in front of the preliminary plaiting Vrolls and provided at one end with tight and

loose pulleys

16, 17 adapted to receive a driving belt, and a horizontal counter shaft 18 journaled transversely in the lower part of the main frame and provided at one end with a gear wheel 19 which meshes with a gear pinion 20 on the driving shaft and provided at its other end with a gear pinion 21 which meshes with the gear wheel 14 of the shaft of the lower preliminary plaiting roll.

The. die blades of the upper plaiting roll are preferably made separate from the body of this roller and seated at their innei` edges in longitudinal channels 22 formed in the periphery of this roll so as to permit of re newing these blades from time to time as they become worn out. In order to conne these die blades in the channels of the body of the roll 10 each of the die blades is provided at its opposite ends adjacent to its inner edge with a pair of laterally projecting locking lugs 23 which are engaged by locking disks or'plates 24 detachably secured to opposite ends of the upper preliminary roll body by means of screws 25, as shown in Fig. 6 or otherwise, and provided on the inner sides of their peripheral portions with annular grooves 26 which receive the lock'- ing lugs 23. By this means the preliminary plaiting blades can be readily removed when worn and interchanged for new ones without dismantling any considerable portion of the machine. As the strip of metal is fed forwardly between this pair of preliminary plaiting'rollers a plurality of longitudinal webs and plaits are formed in alternation thereon. At they same time that the plaits are formed on the strip the beads 'on the webs are also formed by longitudinal ribs 27 arranged on the periphery of the lower 'preliminary plaiting roller between the die grooves 9 thereof and engaging withA longitudinal die grooves 28formed on the upper plaiting roller between the blades thereof and while passing between this pairl of plaiting rollers the longitudinal offsets 3 are produced at opposite-ends of the webs by circumferential ribs 29v arranged at opposite ends of the lower preliminary plaiting roller i'engaginigtj icorrespondil'ig-i' vz; 30 mths-'upper ypwlreims' plaiting rollen* and the'ofsets .4a'tv. correspondingends of.r

the walls jofjtheyfplaitsam formed on, lthe same side .of the' strip?I as the longitudinal o 'sets `of the'webs, by'providing the oppositeendsA of each die groove 9 in the lower lplaiting roller with loffsets 31 whichfare adapted to .coperate withl corresponding Y depressions 32 on the sides of the die blades v12 at opposite ends'thereof. Alfter* the preliminary plaitingof the strip has been thus effected the same passes forwardl between the members of the secondary o rv nal plaiting device which completes the formation of the plaits. This final plaiting device com-Y prises an upper die or plaiting roll or roller 33 which is mountedron a horizontal shaft 34 journaled transversely in suitable bear.- ings on the main frame and provided in its periphery with longitudinal grooves 35 adapted to receive the beads of the websand also provided adjacent to its opposite ends with circumferential grooves or recesses 36 f which are adapted to receive the longitudinal offsets of the webs, as shown in Fig. 10. Below the upper final plaiting roll is arranged a final plaiting roll or supporting roller 37 which is mounted on a horizontal shaft 38 journaled transversely in suitable bearings on the main framel and provided on its periphery with a plurality of die sections 39 which are movable .circumferentially relative to the body of the lower inal plaiting roll and adapted to coperate with the upper inal plaiting roll. Each of these die sections is constructed in the form of a transverse bar which is capable of moving circumferentially to a limited extent on the periphery of the lower final plaiting roll by providing the periphery ofthe latter with a series of transverse grooves 40 each of which receives the narrow inner'portion 41 of one of the die sections, eachof said inner portions being of greater width than the width of the reduced inner portion of the companion die section. The outer peripheral side or face of each die section is provided with a transverse die rib 42 which is adapted to engage with the concave side of the bead on a. web of the plait'ed strip of metal, two-circumferential ribs 43 arranged at opposite ends of the peripheral face of the die section and adapted to engage with the longitudinal offsets of the webs, and the radial sides'of each die section are provided at their opposite endsA with laterally offset two plates or disks secured to opposite ends of the lower filial plaiting roll by means of screws 4G, as shown in Fig. 10, or otherwise, and provided on the inner opposing sides of their marginal portions with circumferential locking grooves 47 which receive locking lugs t8 formed at opposite ends of the die sections adjacent to the inner edges thereof.

The strip with the partially formed plaits thereon is fed between the opposing faces of the upper final plaiting roller and the die sections of the lower final plaiting roller and as this strip passes between these parts the walls of each plait are pressed toward each other so that the opposite ends of the walls of each plait engage with each other while the intermediate parts of the same are slightly separated, thereby putting the strip `in readiness for assembling with other parts of the radiator. As the strip having the partially formed plaits approaches the incoming side of the upper andflower final plaiting rollers each of the partially formed plaits passes between the opposing radial sides of two adjacent die sections which latter are at this time separated to permit of the entrance of the respective plait between the same and the adjacent webs are arranged upon the circumferential face of the two die sections. After each plait has been thus deposited between two die sections that die sect-ion in rear ofthe plait is pushed circumferentially forward toward the die section in front of the plait whereby the plait is pinched between the die sections and closed and its formation is completed. Upon thus pushing each die section forwa rdly its longitudinal die rib 42 is brought in line with a longitudinal groove 35 of the t upper plaiting final roller So'that the companion transverse bead of the adjacent web is gripped between the same, thereby interlocking the respective die section and the upper final plaiting roll and causing the respective die section to operate as an abutment against which the next following die section is pushed for completing the forj mation of the next following-,plait in the strip. terlocking engagement with the upper final plaiting roll on the front or outlet side of the same these die sections again separate circumferentially from each other in succession and permit the completely formed orvfolded plaits to withdraw therefrom and enable the strip to slide tangentlally relatively thereto over a delivery table 49 arranged tangentially adjacent to the outlet side of the lower final plaiting roller.

The forward movement of the final plaiting rollers is effected solely by the pushing operation which is exerted against the die sections in the act of completing the formation of theplaits, whereby proper engage- As the die sections move out of inment of the surfaces of the final plaiting roller and associated parts with the previously formed surfaces of the strip is insured without -necessitating any accurate relative adjustment of these parts to secure harmony of action. The preferred means for effecting this forward movement of the two'teeth 52, 53 which are arranged one behind the other while the rear end of each of these bars is guided on the adjacent part of the main frame preferably by means of a roller 5st mounted on the frame and engaging with the underside of the shifting bar and a guide lug 55 projecting inwardly from the main frame into engagement with the upper side of the shifting bar. These shifting bars are so operated that the members of each pair at opposite ends of the final plaiting rollers move forwardly while the other pair move rearwardly. ADuring the forward movement of each-pair the front teeth thereof engage with the rear side of one of the die sections at opposite ends thereof and move the same tightly against the preceding die section while the rear teeth thereof engage with the rear side of the next following die section at opposite ends thereof and move the same with the die section lwhich is engaged by the front teeth. To permit the shifting bars to thus engage with the opposite ends of the die sections these ends are reduced, as shown at 56in Figs. 2 and 11, whereby the teeth of the shifting bars are enabled to enter between the end portions of the die sections.

The oscillating or reciprocatingmovement ofthe shifting bars is preferably effected by providing each Iof the shifting bars on its central part with a yoke or guideway 57 for two transversely sliding shoes 58 which receive between them a crank or eccentric 59 formed on the adjacent-part of the driving shaft. The cranks for one pair of shifting bars are arranged diametrically opposite the cranks for the other pair of shifting bars so that during the rotation of the driving shaft one pair of shifting ,bars is moved forwardly for completing the formation of a plait while the other pair and are then depressed into engagement with theend portions ofthe next following die sections, for which purpose these shift- -ing bars are held yieldingly in their lower position by tension devices each of which comprises a vertically movable slide guided in a bracket 61 on the adjacent part of the main frame and provided at Aits lower end with an anti-friction roller 62 engaging with the upper side of the yoke of the respective shifting bar, and a spring 63 mounted on said bracket and engaging with the upper end of said slide, as shown in Figs. 1, 3 and 5.

he upper and lower plaiting rollers are compelled to turn together by means of intermeshing gear wheels 64,65 secured to the corresponding ends of the shafts of these rollers. These gear wheels are preferably of the same diameter, as -shown in Fig. 1, but in order to compensate for theslack between the several die sections mounted on the periphery of the lower final plaiting roll the diameter of the latter and the radial 'thickness of the die sections taken together is made sufficiently greater than the diameter of the upper inal plaiting roller, as shownin Fig. 3, so as to compensate for this slack and. permit the die sections while in engagement with the periphery of the upper nal plaiting roll to move at the same rate of. speed, thereby insuring proper engagement of the gripping surfaces -of the upper final plaiting roller and the die sections with opposite sides of the plaited or j corrugated strip of metal.

' In order to assist the upper final plaiting ing rollers and above opposite ends of the dic sections as they issue forwardly from between said rollers so thatl each of these die sections in turn engages its opposite ends with the teeth on the lower sides of the retarding wheels and causes the latter to be turned forwardly. This movement of the retarding wheels is frictionally resisted preferably by the means which are shown in the drawings and which comprise a driving gear ywheel 67 connected with each retarding wheel on the outerside thereof and meshing with a driven gear wheel 68 ar` ranged in front of the same, a shaft 69 carrying the driven gear wheel 68 and prol ing the brake band tightljT around the brake drum. By this means a frictional resistance 1s producedwhlch acts in opposition to the forward turning movement, of the two retarding wheels so that the teeth of the latter by engaging with the front side of opposite ends of thedie sections operate to resist the forward movement of these die sections and aid not only in holding the foremost operative die sections back and aiding the upper feeding roller to form an abutment against which the trailing members'of the operative die sections are ressed, but also causing the die sections a ter clearing the upper nal plaiting roll on the front side thereof to remain clamped` together for a short time and thereby properly control the movement of the completed strip as it passes from the final'plaiting rollers to the receiving table.

At times it is desirable tol move the retarding wheels out of their operative position, for instance, when it is desired to draw a strip of metal through the machine when getting the machine ready-and also when a strip has to be removed which has accidentally become jammed in the machine, at which time the retarding wheels should be out of the way in order' to avoid interference with the free rotation of the die sections. This is made possible by mounting the shafts 69 in fixed bearings 'on the main frame and providing shifting levers 91 each of whichl is pivoted to turn concentrically about `one of the shafts 69 and is provided on its rear arm with a pivot $22 upon which one of the retarding and driving gear wheels turns while its front arm is yieldingly ressed upwardly by means of a spring 2 interposed between the underside of this front arm and the adjacent part of the main frame. The position of each revtarding wheel relative to the corresponding ends of the die sections may be adjusted by means of an upright adjusting bolt 7 3 passing through corresponding openings in the front arm of the respective shifting lever and the adjacent part of the frame and having its head 74 engaging the underside of the frame and its screw nutk 75 bearing against the upper side of the front arm of the adjusting lever. Upon turning the screw nut 7 5 in one direction or the other the shiftinglever may be turned so as to engage the teeth of the retarding wheel the required extent with the ends of the companion die sections.

Instead of mounting the die sections on a A.

rotatable supporting roll as shown in the construction represented in Figs. 1-13, the

projecting guide lugs 77 which slide in oval guideways 78 formed in plates 79 secured to the adjacent parts of the statlonary mam frame S0. '.lhese die sections are pushed one 1 at a time forwardly by means of shifting bars S1 similar to the shifting bars shown in -Figs. 2, 3 and 13, so that each die section is in turn pushed forwardly into engagement with the periphery of the upper linal plaiting roller 82 and the next preceding die section for causing a partially formed plait of the strip between the same to be converted into a completely formed plait. As each die section clears the final plaiting roll 82 on the front side thereof the same pushes the next die section in advance of the 'same forwardly, which movement is in turn transmitted successively to the several die sections so that the same are caused to travel around the oval path of the guideways until they again reach the position where they are pushed forwardly by the shifting bars. 1V hen employing this stationary form of support or guide for the die sections the opposite ends of the die sections may be engaged by the star wheels83 of a retarding device similar to that shown in Figs. 2 and 3 for controlling the movement of the die sections on the delivery side of the upper final plaiting roller.

This machine for producing plaited strips of sheet metal can be operated very rapidly so as to secure a comparatively large output of such articles, the same requires comparatively little power for its operation, its working parts are not subjected to undue wear, and it is not liable to get out of order easily.

I claim as my invention: v

l. A machine for bending sheet metal comprising a plurality of die sections arranged iny an endless row andadapted to receive between them partially formed'plaits on a sheet of metal, and means for causing 4adjacent die sections to be moved relatively to each other for engaging a plait of said sheet between the same.

2. A machine for bending sheet metal comprising a plurality of die sections arranged in an endless row and adapted to receive between them partially formed plaits on a sheet of metal means for causing adjacent die sections to be moved relatively to each other f or engaging a plait of said sheet between the same, and a roller coperating with the outer faces of said die sections.

3. A metal bending machine comprising a plurality of die sections arranged in an endless row, each two adjacent die sections be= ing movable relatively and adapted to receive between them the plait of a sheet of ing shifting bars provided with teeth adapted to engage with opposite ends of the die sections.

5. A metal bending machine comprising al plurality of die sections, each two adjacent die sections being movable relatively and adapted to receive between them the plait of a sheet of metal, and means for moving said die sections forward successively, comprising shifting'bars provided with teeth adapted to engage with opposite ends of the die sections and means for reciprocating said shifting bars.

A metal bending machine comprising a plurality of die sections, each two adjacent die sections being movable relatively and adapted to receive between them the plait of a sheet of metal, and means for moving said die sections forward successively, comprising shifting bars provided with teeth adapted to engage with opposite ends of the die sections and means for reciprocating said shifting bars comprising a shaft having cranks operatively connected with said shifting bars.

'7. A metal bending machine comprising a plurality of die sections, each two adjacent die sections beingY movable relatively and adapted to receive between them the plait of a sheet of metal, and means for pushing said die sections forwardly in succession comprising reciprocating shifting bars provided at their front ends with teeth engaging with opposite ends of said die sections, guides for the rear ends of said shifting bars, a shaft provided with cranks operatively connected with the central parts of said shifting bars, and means for holding said shifting bars yieldingly in engagement with said die sections.

8. A metal bending machine comprising a plurality of die sections, each two adjacent die sections being movable relatively and adapted to receive between them the plait of a sheet of metal, and means for pushing said die sections forwardly in succession Acornprising reciprocating shifting bars provided at their front ends with teeth engaging with opposite ends of said die sections, guides for the rear ends of said shifting bars, a shaft provided with cranks operatively connected with the central parts of said shifting bars, and means for holding said shifting bars yieldingly in engagement with said die sections comprising slides hav- -ing rollers engaging with said shifting bars, brackets in which said slides are guided and springs mounted on said brackets and operating against said slides. 1

9. lA metal bending machine comprising an endless row of die sections,` a support upon which said die sections are mounted, means for successively moving said die sections relative to each other and into an operative position and a roller coperating successively with the outer faces of said die sections.

10. A metal bending machine comprisingy a supporting roller, and a plurality of die sections mounted in an endless row on the periphery of said supporting roller and capable of circumferential movement thereon relatively to each other.

11. A metal bending machine comprising a supporting roller, a plurality of die sections mounted in an endless row on the periphery of said supporting roller and capable of circumferential movement thereon relatively to each other, anda die roller cooperating with the outer faces of said die sections.

12. A metal bending machine comprising a supporting roller, a plurality of die sections mounted in an endless row on the periphery of said roller and capable of circumferential movement thereon relatively to each other, and means for limiting the circumferential movement of each die section on said supporting roller.

13. A metal bending machine comprising a supporting roller, a plurality of die sections mounted in an endless row on the periphery of said roller and capable of circumferential movement thereon relatively to each other, and means for limitingthe circumferential movement of each die section on said `supporting roller, comprising longitudinal grooves formed on the periphery of said supporting roller and each adapted to receive the inner portion of one of said die sections.

14. A metal bending vmachine comprising a supporting roller, a plurality of die sections mounted in an endless row on the periphery of said supporting roller and capable of a limited circumferential movement thereon relatively to veach other, and means forconning said die sections on the supporting roller.

15. A metal bending machine comprising a supporting roller, a plurality of die sectionsl mounted on the periphery of said supporting roller land capable of a limited circumferential movement thereon,

and means for confining said die sections on the `supporting roller comprising laterally projecting lugs. arranged at opposite ends of the" die sections, vand locking v plates secured to opposite ends of the supporting roller ingame and provided with grooves which Areceive said locking lugs.

16. A metal bending machine comprlsmg a supporting roller, a plurality of die sections mounted in an endless row on the periphery of the supporting roller and caporting roller and capable of circumferen-` tial movement thereon, and a die roller having its periphery coperating with the peripheral faces of said die sections, the pitch line of the several die sectionsbeing greater than" the pitch line of said die roller.

18. A metal bending machine comp-rising a supportingv roller, a plurality of die sections mounted on the periphery of the sup porting roller and capable of circumferential movement thereon, a die roller vhaving its periphery coperatingwith the periph-- eral faces of said die sections, the pitch line of the several die sections being greater than the pitch line of said die roller, and means for turning said supporting roller and die roller in unison.

19. A- metal bending-machine comprising a supporting roller, a plurality of die sections mounted on the periphery of the supporting roller and capable of circumferential movement thereon, a die roller having its periphery .cooperating with the peripheral faces of said die sections, the pitch line ofthe several die sections being greater than the pitch line of said die roller, and means for turning said supporting roller and die roller in unison consisting ofkintermeshing gear Wheels of like diameter connected with said rollers. a

20. A metal bending machine comprising a plurality of die sections, arranged in an endless row, a support upon" which said die sections are movably mounted relatively to each other, means for advancing said die sections, and means for retarding the for- Ward movement of said die sections. i 21. A metal bending machine comprising a plurality of die sections, a support upon which said die sections are movably mounted, means for advancing said 'die sections,

and means for retarding the forward movement of said die sectionsl comprising star Wheels having teeth adapted to 'be engaged by opposite ends of the die sections.

22. A metal bending machine comprising a plurality .of die sections, va support upon which said ldie sections are movably mounted, meansfor advanclng sald dle sectlons,

and means for retarding the forward movement of sa1d die` sectlons comprlsing star wheels having teeth adapted to be engaged by opposite ends of the die sections and means for retarding the forward rotation of said star wheels.

23. A metal bending machine comprising a plurality of die sections, a support upon which said die sections are movably mounted, means for advancing said die sections, and means for retarding the forward movement of said die sections comprising star wheels having teeth adapted to be engaged by opposite ends of the die sections and means for retarding the forward rotationof said star wheels comprising driving gear wheels` connected with said star wheels, driven gear wheels meshing with said driving gear wheels, brake drums operatively connected with said driven gear wheels, and brake bands engaging with said brake drums.

24. A metal bending machine comprising a plurality of die sections, a support upon which said die sections are movably mounted, means for advancing said die sections, and means for retarding the forward movement of said die sections comprising star wheels having teeth adapted to be engaged by opposite ends of the die sections and means for moving each of said star wheels toward and from the path of said die sections.

25. A metal bending machine comprising a plurality of die sections, a support upon which said die sections are movably mounted, means for advancing said die sections, and means for retarding the forward movement of said die sections comprising star wheels having teeth adapted to be engaged by opposite ends of the die sections and means for retarding the forward rotation of said star wheels comprising driving gear Wheels connected with said star wheels, driven gear Wheels meshing with said driving gear wheels, brake drums operatively ed, 'means foradvancing said die sections,

and means for retarding the forward movement of said die sections comprising star wheels having teeth adapted to be engaged by opposite ends of the die sections and means for retarding the forward rotation of said star wheels comprising driving gear wheels connected with said star wheels, driven gear wheels meshing with said driving gear wheels, brake drums operatively connected with said driven gear wheels,- brake bands engaging with said brake drums, and means for adjusting said star wheel toward and from the die sections comprising a rock lever pivoted concentrically with said drum and driven gear wheel and having one of its arms supporting the adjacent star wheel and driving gear wheel, a spring engaging with the other arm of said shifting lever and operating to turn the same in the direction for carrying the teeth of the star wheel into the path of said die sections, and an adjusting bolt having its head and nut engaging one with the stationiry part and the other with said adjusting ever.

Witness myhand this 10th day of March, 1914.

` JOHN M. FEDDERS.

Witnesses:

THEO. L. PoPP, ANNA HEIGIs.