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Патент USA US2406093

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> Aug. 20, 1946.
Filed Sept. 22-, 1944
3 Sheets-Sheet l
Egan/v 07241.53. _
Z '
Aug. 20,, 19-46,
Filed Sept. 22. v1944
s Sheets-Sheet 2
EDWIN (0714,45; .
’ b’a'n TTOR/YEY,
Aug. 20, 1946.
Filed Sept. 22, 1944 I
s Sheets-Sheet a
?awzlv WILLEE.
Patented Aug. 20, 1946
2,406,093 > '
Edwin Miller, Jeannette, Pa.
Application September 22, 1944, Serial No. 555,264
. "1 .
'1 Claims.
(Cl. 154—10) '
My invention more especially relates to appa
ratus for stitching or rolling down the fabric
plies of rubber tires, upon a tire building drum.
One object of the invention is to provide means
supplemental to the usual tacker discs or wheels,
for effecting preliminary adhesion of the fabric'
plies, so that there will be less danger of wrinkling
of the plies by the stitching discs or wheels.
_ .
screw-threaded studs 22, jam
nuts 23 being pro-'1
vided to hold the extensions 2| in their adjusted
positions. The stitchers may be set either in
planes perpendicular to the‘axis of the tire-form'
. ing drum 8 or angularly as shown in Fig. 6.
Two sets of ‘tacker wheels or discs 24 are car-‘
ried by arms 25 and their extensions 26 that are
screwethreaded 'on the arms and held in angular
Another object of my invention is to provide
positions of adjustment by jam nuts 21, whereby
means whereby the fabric plies or layers that 10 the discs can be adjusted angularly as indicated
extend beyond the ends of the drum are caused
to adhere to one another and to be shaped in
such manner as to facilitate the placing of the
in Fig. 6. The arms .25 are hingedly connected
at 28 to the brackets I2 and I3 and are yieldably
held in parallelism therewith by springs 30, screw
bead cores.
studs 3|, and wing nuts 32, the wing nuts being
Still another object of my invention is to pro 15 adjustable on the studs to vary the yieldable revide means whereby stitching discs or tacker
sistance to movement of the arms 25 on their
discs may be so adjusted that they will more
hinges. The edges or peripheral surfaces of the
effectively produce a wiping or smoothing action 7 discs 24 are toothed or serrated, to reduce danger
during their travel toward the ends of the drum,
of wrinkling of the fabric duringtheltacking and
so as to prevent wrinkles being formed'in the 20 stitching thereof into place on the drum,v since
fabric during stitching operation.
there will not be as much “crowding” of the fabric
In the accompanying drawings, Figure l is a
layers as would be: the case with smooth-faced
face view of the apparatus; Fig. 2‘ is a fragmen
tacker wheels. I A set screw' 33 is providedufor
tary end view thereof; Fig. 3 is a horizontal view
each tacking disc,*to serve as a stop for-limiting
of a portion of the apparatus taken on the line 25'. movement of the ‘arm 25 toward'the bracket and‘
III-III ‘of Fig. 2; Fig. 4 is an-enlarged view,
partly in section, showing details of means for
hence to provide for radial adjustmentof the
tacker discs with'respect to theidrum 8. The
brackets I2 and I3 are slid along the rod I5 by‘
adjusting. the tacker discs; Fig. 5 is a similar view
showing the manner in which the stitchers may
yokes 35 that are also slidable on the rod I5 and‘
be adjusted; Fig. 6 is an enlarged fragmentary 30 have threaded engagement with the screw, I8.
view showing certain of the tacker discs of the
At their lower‘ends, the brackets l2 and I3
stitcher discs in angularly adjusted positions; ‘and
have‘ slidable engagement with a guide rod 36
Fig. '7 is a fragmentary view showing the manner
whose ends are supported on hangers 31 loosely’
in which the fabric plies are bent radially inward
supported by the rod I5. The rod 35 extends
at the ends of the drum, for receiving a bead core. 35 through a link 38 whose lower end is pivotally‘
My invention may be applied to various forms
connected‘ to a pedal lever 39 so that when a foot
of mechanism other than that shown in they
pedal- 40 is depressed, the brackets I2-I3 and‘
drawings and in conjunction with stitchers of
various well known forms which ‘are shifted in
opposite directions axially, from the middle of 40
the drum face to the ends thereof, a single ‘pair'
of stitcher discs or wheels being commonly em
their associated stitchers and's'ta'cker .wheels will’
be moved against the drum as‘shown in Fig.2; '
Turning of the screw shaft I8 will‘then moverthe
two sets of discs toward opposite ends of the drum
,8, to tack and stitch the- fabric plies into place,
the operator meanwhile holding down the pedal
A conventional tire form drum 8 is driven by
40 with a desired pressure. When the discs pass“
a shaft 9. The numerals l0 and II indicate 45 off the ends of the drum, they will depress’ the‘
stitchers that may be of any well known form,
fabric plies 42 as shown in Fig. 7, to permit of j
although they are here shown in Figs. 5 and 6
conveniently'placing the bead cores preliminaryv
as being angularly adjustable. These discs are
to wrapping the edges of, the fabric. around the
carried by brackets l2 and I3 slidably supported
same. 'A_ ‘stop screw. 43 on the base of the ma
on a rod I5 (Fig. 2) whose ends are supported in 50 chine is adjustable to limit ‘pedal movement and
frame members I6 and I‘I,.the brackets being
hence the extent to which the fabric will be bent
simultaneously slid, in opposite directions across
inwardat the ends of the drum.
the face of the drum by a screw it journaled in
Upon completion of this operation, removal of .
the frame members I6 and IT, and turned by a
the operator's foot will permit aspring 44. to raise '
hand wheel I9 or other suitable source of power,
as explained more in, detail hereafter. The
stitchers I0—-II are respectively connected to the
the pedalandjswin‘g the stitcher'ajnd tacker discs
away from the drums thereupon the"v hand wheel _
I9 ‘will be rotated 'to‘ return the discs to their‘
starting positions, near the middle of the drum.‘
The tacking discs 24 exert a yieldable pres
naled and which are angularly adjustable on 60 sure on the plies by reason of their springs 30, the
brackets I2 and I3, by arms 20 (Fig. 5) having
extensions 2I on which the stitchers are jour_
springs nearer the ends of the drum being usually “ ing disc, a plurality of tacking discs associated in
set underless tension than those springs nearest 1 unitary relationship‘ with the stitching disc,
to the stitchers‘ It] and H. .The tackers exert 7 I means for ‘shifting the stitching disc and its as- lighter pressuredontthe, fabric thanndotthe? stitche, ‘ so,ci,atedltackingl.-discs axiallyeof -;_the1,drum while
in. engagement with the/fabric plies, suchdistance v
that the discs will be carried beyond the ends of
sures as they move toward the ends’of the drum. I I a the drum, and means for moving the discs a slight
distance toward the axis of the drum after they
There is thus less danger of wrinkling of the fab
have passed beyond the end thereof, the tacking
, ric plies under the heavy stitching pres-suresthan
discs being moved further toward said axis than
where tacker discs are not employed. Afewer or
greater number of tacker discs may be used,‘ de-' ' the'stitching disc.
ers and e?gecigatpreliminary adhesion ofLthe fabric
plies to one another at gradually increasing pres
15;.1'I‘ire ,buildin'grapparatus comprising a ro
' pending upon the size of the drum.’
' The tacker discs serve the further purposecf ‘I ‘ tatable,,_drum for receiving fabric plies, a pivot
ally-mounted bracket, means for rocking the
assisting 'in-uniting fabric plies that eXtehd-be-'
'yond the ends of the drum, since they will be 15 bracket on an axis parallel to the axis of “the
drum;v means for moving'thebrack'etparallel to
moved; :somewhatxby .theiraspnings‘ closer to the
said-axis; from a'midpoint'cn. the drunr face to- '
,axi‘ss-cf'it-he. drum than'arethe stitchers III-I2
ward oneiendthereo?-a stitching disc rotatably- *
(zsee-gFli'ga'll and'theicentrifugal force of the fab
mountedon ar?xed axis on the bracketin posi-_
‘ric:plies’'duringrotationv of the drum will-hold
them somewhat snugly against 'thediscs, to re?ect 2 6 . tiontobear against iabriciplies on the drum, arms
slight'adhes'ion'of the; fabric layersat their edges, ' : pivotally connected to said bracket, at their inner‘
and thereby vfacilitate; placing of‘the bead‘ core. ' ends,‘ tacking "discs rotatably <nr1ounted'v onthe
outer endsfof the. said 'arms,in- position to engage
when: the 'stitchersihave completed“ their work.
fabric on- the drum, at points between the stitch
After-placingof the; bead cores the fabric will‘ be
ing ‘discv and said end‘ of the'dru'm, and springs
wrappedraround' them in any-‘suitable manner, as
'for» yieldably holding the'said arms against‘pivé
shown-tion exampl'eain/"my Patent 2,320,190.
otal movements backwardly relative to the bracketv
1 -- Tendency‘ ofirthe j'fabric plies" to" wrinkle ‘during
when theibracket‘is rocked'in a direction toimove
stitching, mayfurtherl be overcome by-tilting the
the discs against fabric on the drum.
stitchers vand:tacking discs angularly as shown-in
‘Fig; 6’ and‘, thus- producing a, wiping: actioni onthe 6) - 6. ,Tire building-lappaliatus' comprising’ a’ ro
tatable drum for receiving fabric plies, 'a pivot;
‘fabric from 'Jthe‘mid'i pointtoward ‘the ends,v of'fthe
allyi-mounted' bracket, means, for rocking :the
'bracketon an axis parallel to the-‘axis of the drum,
means for vmoving ‘thedbracket ‘parallel to saidv
“axis, from a ‘mid; point onthe drum face'toward"
: 'V71:,Tireiibuildingapparatus. comprising a ro
'ltatable‘drum ‘for receiving fabric (plies; a‘ pair of
stitching discs positioned to ‘press th'evplles onthe
one 7 end
‘drum; meansfori simultaneously: shifting the discs ‘
‘in- opposite directions; from mid points. on the'
mounted on a fixed axis- on. the-bracket, in posi
a i ‘st-itching 'disc
‘drum face-,?towardz the ends there,oi;-a'.pivotally~
tionto bear againstif'abric plies on the drum,‘ arms‘
pivotally connected to said bracket, at their‘ inner
mounted‘ tacking rgelement' 7 associated with ‘each ' ,
3 ends,’ tacking "discs 'rotatablyemount'ed on the" ~
stitchingudisc;"injépositiorr to move in advance‘
outer ends of "the said” arms; in :positionlto engage‘
ithereofgand» arranged to; effect'inco'mplete ad
fabric onthe drum at points between'the stitching ‘
hesion' ofthe plies: to one another,- and a spring
lforyieldablyrtransmitting; working pressure to-the
disc and’ sa‘idend of the drum, and" springs for;
yieldably holding ‘the said arms against pivotal‘
451 movements "backwardl-y.’ relative‘- tov the? bracket
when the‘ bracket'rislrockediin-a direction to move "
2. Tire:building-apparatus comprising a -ro-‘
the discs against'fabric on thefdrum; the springs
'jtatable-drum for receivingefabricplies, a stitch; ‘
iing- disc,
being independently‘adjustable :rtorrvary their re—_ ,
plurality ofztack-ingr discs associated-in
iunitary relationship 'with-the/stitching disc; means
'7. Tire building‘ apparatus-‘comprising a r0
for‘, shiftingthestitching 'dise andvits' associated 5 0
tatabl'e vdrum?for receivingv fabric plies,’ a pivot
ltacking'idiscs axially.v ofethesdrum while- in engage
ally-mounted “bracket;v ‘means: ‘for’ rocking. the
;mentvwith> the fabrie plies, with the tacking discs"
spective effectiveiforces.
, i inc-advance .015v thei-sti'tchingdisc, the'tacking’ discs’
bracket" On‘ an axis-parallel: to the axis of'thej
‘beingvrotatahleaand haying axefsrangularly ads
f'justable relative to the; axis-~.of,~thevdrum,‘and:
drum; means-for movingsthe bracket‘parallel‘ to .
said axis, from: amid point-,on the drum face to- i
ward one end thereof, ~a'-; stitching dlSCi rotat‘ablyr
mountedwonf a1:?xed?-axis<on1~therlcracket;v in posif- '
; springs for‘ yieldably etransrnitting working, --pres
5 surestothe; tackingzdi'scs.
tion to bear against fabric plies on the drum,i
arms piVotally-conneetedtd said, bracket; at? their
3. , Tire? vbuilding "apparatus‘comprising; » a V .ro-V
itatable i drum ' for ‘receiving; ‘fabric, plies; 'a. stitch
fingdisc, aphiralityL of tacking discs. associated
finnunitary; relationship with the stitching disc,
‘7 qmeans for shifting the stitching'discand its. as
' inner = ends, tacking :discs; rotatably'i-mounted" on,
the outer ends of-t-he- said 'acmsrinrpositi‘on-to;en;
gage» fabric-ion the-drum, ' at points-between the
stitching disc and saidgend" of the drum, springs‘
j sociatedv tacking ' discs: axially .oi the drum;- While,
' ‘inengagementiwith; the ‘fabric. plies, with the
for yieldablyholdingthe said arm?again-stgpivotalz ,
i (suchdi-stance', that the discs. willlbe-carriedbe- »
whenthe bracket-isrockedrin a directionto move
the, discs against: fabric- on the s dnum', andimeans
‘tacking,,.discs, inF advance of the-stitching disc,_ 5 movements backwardlyt relative to, they bracket»;
‘yond the'en'ds of theydrurna and, springs forrmove
1 ing the, tacking discs toward .the' axis of, thedrllm
independently 1 of the stitching disc, after they
‘ hakvelpassed beyondjthe endthereof,
.4; 'I'iregbuilding‘vapparatus comprising aro:
j tatable
.for receiving 'fabrie plies, ,a.» stitch:
’ for changing theiangularity of thee'tacking; discs
relative to theirraxes; independentlyeffthe-stitch?v »
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