USRE22369E - Collapsible form - Google Patents

Description

Aug. 31, 1943 H. c. Bos'rwlcK COLLAPS IBLE FORM original Filed Ju1y 1s, 193e l #6.6M M KMP i Reissued Aug. 3,1, 1943 UNITED 2, ST'lE- Henry C. Bostwck, Akron, Ohio,

Akron Standard Mold Company a corporation of Ohio dated March' 16, 1937, se-

original' No. 2,013,729, rial No. 90,958, July assignor to The' Akron;4 Ohio,

.1936. Application for reissue'March 15, 1939, Serial No. 261,977

Claims. (Cl. 154-9) This invention relates tocollapsible, segmental winding forms or drums for building bands such as those for forming tires bythe so-called pulleyband method. f

expand the drum, and it may also be automatically expanded by centrifugal force whenrotated in either direction. It will the invention may. also be applied to other types of drums.- L

This lllustrateddrum has the usual lwidthwise The object 'of my invention is to facilitate 5 removal of the tire band, especially when the adjustment being formed with body segmentsl!! drlimis high-crowned or made with deep, underhinged to the spider and connected with .the cut flanges against whichthe tire beads are toggle links, wing segments 2B adjstably iixed positioned as in the formed tire. If these deep thereon by screws 2l whose stems occupy slots 22 anges are rigidly formed on the drum segments, l0 in the body segments, and thin gap-,shield segthe yoverlying segments, when the `drurn is colments 23 affixed to a central flat rib structure on lapsed, will pile up on the underlying'ones so as thebody segments. considerably ,to yreduce the extent ,ofV collapse. In the preferred embodiment of my invention The present invention avoids this difficulty by an here illustrated, there is removablymounted in improved arrangement of detachable bead-seateach end of the drum body,which includes the base ing flanges.` and wing segments, a segmental collapsible bead- "Of theaccompanying drawing, Fig. 1 is a rear seating flangeor ring 24y having a short cylindrielevation, in section through the shaft, of a tire. cal portion 25 flush with the cylindrical outer building drum provided with detachable bead surface of the adjacent wing segment 20, a flanges inaccordance with my invention.. 20 rounded shoulder portion 26, an undercut bead- Fig. 2 is a longitudinal section, approximately seating portion 21, and an inner marginal radial on the line 2-2 of Fig. i. portion 28. -Said bead ring also has an axially Fig. 3 is a. fragmental elevation showing the extending mounting flange 29 fitted and locked collapsed relation of adjoining flange segments against outward vradial movement within the and separationof their pivotal connection. marginal portion of the wing segment, and inter- Fig. 4 is a fragmental edge View of adjoining locked therewith against axial movement by a flangeY segments showing a modified pivotal concircumferential rib on the ring flange occupynection. f ing a complemental groove 3| on the wing seg- 'I'he drawing illustrates this yinvention as apr 5 ment. A slanting inward movement of the bead` plied to a drum ,of Vthe general-,type disclosed in 30 ring segments, to clear each o f them from the tire my Patent No. 2,042,498 of June 2, 1936. III is a beads when the ring is to be removed, is provided horizontal rotary power shaft to which is fixed a for by forming intertting maleand female cones central segment support or spider II consisting of 32 and 33, parallel with the bead seat 21 on the a hub and a pair of opposite arms. To the ends el ring andwing segment respectively, andfforming of these arms, on hinge pins I2,are pivoted two 35 the end of thebase segment I9 with a correspondpairs of chuck body segments comprising dupliing undercut bevel 34. v cate members yI3 with underlapping ends and Each of the bead rings 24 istransversely divided duplicate members I4 withfoverlappin'g ends into" segments, preferablyV unequal in number meeting those of the segments I3 in expanded .y j, and/or angular length tothe drumbody segments condition, SaidA Segments, being arranged in so as to break joints therewith,v said ring. segcouples, with oppositely swinging members. `To ments in this case being three invnumber includoperate the segments, there is provided the usual ing a key segment 35, an intermediate segment 36 toggle control including asleeve'or collar I5 conand a last segment 31. Radial joints 3B andv 39 centric with the shaft and rotatable'with or rela- ,I are formed v between the respective pairsy 35, 36 tive thereto at the end of a hollow shaft I6, a pair and 36, 31, anda semitangent joint 43, with a of short linksl I'I connected with the-underlapping curved ndenapping Surface on. the key segment Segments I3 and formingLWith arms 0n. Said C01' rand acomplemen'tal overlapping surface onr the 1m" a pair 0f togles vWhich are not fullytraght' last'segment, both concentric with the pivot o f ened 1n the expanded-A position and a ,pa'rrof '50 said key segment, is formed between these two. longer bent .n-ks" 'a formmganotief um. At the joint 4a, there is providedany suitable toggles with Sld'ciouar" tg? knklepmsfglhwh form 'of'spring lock or latch, such as a slidable gais -overce er n reacvmg e man e con', boit 4| carried by the key segment 35 and yieldition. When the collar I5 and hollow shaft I6 n tito ket ,43 in are retarded' while thedrum is forwardly rotat- .mgly pressed .bygsprmg a' -soc k ing,as` byV means of a brake (not shown), the =55 the. last Segments-l on SWR-ging the-.ey segtoggles willfold rand collapse the drum kby its ment Outwardlllm? lts Operatlve posmon this power of rotation.V It is also'common to collapse latch WYRUQ eltcaly lOk wgethel the ends of such drums by a hand-wheel. Reverse rotation 1 the sesments. and 31 against the pressured of thedrum while the, control collar is held will the stitchingtools as they round the shoulders of o0 may e the drum and to release the latch, it.

be understood that manually withdrawn by its inner and.`

lmove the sides of the slot to drumabody l Y n .Shown infFlgs; `1 and"v 2, the bead ringsegment's 1 lation-with the drum any rotative'pdsitionto' simplify thek structure'y andrai/e time: in vits 'j sndoctinsto hold alignment'. n completed; the rings y'lf-laire! removed, one-seg ment at a` time, beginning withr the key segment' l remoatlonct the: contrer pullingk on the Ahead The rwectir pairs of segments. 35,311 'and 36, 31 are pivotally connectedl in end-to-end .relation at rtheir ,inner periphery'by means of,- an .ear 44 on the.v posterior/one of said segments.

(such as 36 furthe pair 35,35),,anvaxiallyeire tosaid eartending pivot istud 4,5 screwedy y and formed witha'. headlvtiattifs inner. end,I

and an adjacent ear 41 lyinginwardly oftheV ear 44 and movable both fpivotallysof saidst'ud 45 to` swing the anterior segineritinwI an. Smgu` i y embodiment may be mafie'.

llt will be understood that other changes of For example, while itis preferred' to makethebead" flanges as fulldepth rings detachable from the drum body at the latters outer periphery, to permit the greatest extent of collapsek of said body, the invention is "not wholly restricted to such an arrangement. 1..: 71' I Clarin:`

" ly` collapsiblek segmental,

lar .relation with the posterior one', :and axially of the stud, to allow ajbead clearing" movement' 1 of the ring segment inwardly Vof the drum" iii an axial direction, the rcombined movement ybeing a' slanting one` permitted" bytliebeveled sur,-

faces 3,2, 331and-34. Ear 41 is` alsoiormedwith af'slot or" opentsided bearing recess 48- which, when the segments are circumferentallyaligned',

l isisemltangentiy slanted outwardly ina direction towardy theA adjoining",` segment so as normally to `lock the pivot" joint vagainst inward radial" separation of the anterior segment shown' in Fig. 3 when the anterior segment, such as 35i is swung, through a' sumclent angle to or beyond! 'a posiradial joint 38;

invention, whenthe has been` einiaridiscfy into a circleas tion) or` paralleiism` with( the lnthe operation of this andfs-deeessively assembled in said' body and f interloclred with theiwingsegments-2U bymeans ,1. di" tleyrbf 3l' andy groove Ml,

assembly. I The` presence of 4these bead rings lends-radial support. togtliebody segmentsH I3. 1 and 'Ils'iippleiil'enting the `action of the toggles'r in. avoiding; any' unimended*v collapse or' the drinn, the ends of the drum-'body When/thetire band is snntm the course y v y 'or theirfremovai, after dissenting they segment Y p v from the drum body,- it be: turnedcendwfscyiiitoffan interior space 'ot tire-drinn lmorerjitslremovsi through` the een# trai aperture ori me bead on` matrice; on

' removal or bead rings..

y tnefafrumbody may their be collapsed in: the` usual-l manner.. either by nomiv or' by theI powerA or its; rotation; through collar t5.r y

Pig; 4 represents unmodified pivotal" connecfrom theposterior` one', but adapted' to permit suclrseparation as composed of f wardly of the form.

` finwardfradial 50,y

the individual tion betweenad-joining beadv ringse'gme'nts such` l as an anteriori keysegment 3Q" andro posterior intermediate segment, accordingy to which,` the m41. on lthe respective s'egl helical direction inwardlyf of i111clearingsaid,` segment from individuali removal of the segments.

a.1.col1apsing: swinging previously described, to: allowv `f 3 "75 in whichthev axes oli the pivot joints..- are. dir@ l ting surfaces* o ible, segmental form body, and an independentbead-seating Bange structure removably mounted vthereon and composed of segmentsv detachable by moving them radially inward from the form body.

v2.13.52 tire-building form comprising a collapsib1e,`segmental form body, and a collapsible beadseatingring aj series of segments Whose `adjoiningmemloersv are pivotally connected with each other,v interlockingk with the form` body" by an outward radial movement. i l i `3. A tire-building drum comprising. a vcentral rotary segment support, Ia kcollaiiisibl'e drumybody permanently mounted"thereoirandl composed of pivoted'segments; anda *pair of. collapsible, segmental, bead#seating` rings removably locked in the ends y,of saidbodyandy fs'e'rvihg. to hold the body segments iny expanded condition. y 4. rAAv tireebuilding form comprising af collapsible, segmental `form body,` and' a" collapsible, segmental bead-seatingsring detachably ill-.izedA in the end of said body inV an underlapping relationy thereto, andinwardly `separablefrom the body.

said ring and body having complemental abutting surfaces -adapted tol permit a"r slanting in,-

"ward separating-movement or said1 ring radially in whichv thel ring is formedA with an undercut beadfsea'ting portion, rand'` it `and* the ring-abuty 'ff said"^fo'rm are beveled: to allow al slanting separating movement of said ring in- 6. A tire-building form comprising collapsible, segmental 'forniy body;l and a bead? seating ring detachably mountedfthereonjnpdi composed Sor segments separably connected in series,` and detachable fromthe form; body byand movement, vsegments being separable pivot ,Ibirltrl1- permitting removal voi"v the segments whilerthe body` "segments: remain expandedlln the tire band; n'7; A: tire-building` form, comprising a` collapsible, segmental form` body, .and an undercut," bead-seating rlngldetachably mounted thereo'x'iv andi composed ofiA segments pivotally conr'iectedy 'in seriesl andhhavingi pivotal and. axial callapsi'rig movements' inwardly of. kthe form. to clear them of;thexftlre-beads.: P 4f l 8.1: A; :tire-bmiding- `form according to 'claim' '7` in` which the pivot joint' betweenifafpair ofring segnriier-its: includes u an? axially' extending pivot pixi oni one segment'aiicillirir ear-on. the other coiinected by segment;1 rotatable on said* pin and slidablethereya-'10mg to separate the se'grrlen'tsi` 9; Aitire-buildingi'orm according" tofcl'alm' '1 posed.; angularlyiot the I'formv f axis to make the caldirection;

.ring segrrien`to-A collapsiblel substantially" in av helil 1o. -A drum typering bondingy door ,e 'comprising y a central segmental "collapsible band, and in,-`

dependentlycollapsible side rings` engaging the interior of'ssic' central banjo. l ff y f I Ingmar c. Bosrwrcx.

`1.A.{Util-e-rliiillwiiiigform comprising a collapsremovably mounted thereon, `and y

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