Note: Descriptions are shown in the official language in which they were submitted.
~u ~ w~ ~
~ ~:
Th~ pre~ent inYention rs~la1:~ tv a bg~lt-type c~nveyo~
aE2d~ more particularly~ tc~ a con~ yor ~y t~m of tho flaxlbl~-
-bel~ type wh~rein an endla~ b~lt or band of rub~r or like
flexibl~ mat~rlal l* ~up~orted along it~ ngitudlnal ~d~
on suppor~ roll~rs or ~h~e~13.
~9L~ ' ~
C:onv~yor belt ~nstal~ ave b~en pro~.ded h~reto
or~ e~9 ~or th~ ~ran~port of bulk and loo~e material in
c:he~r~iGal ~ miniL:ng ~ Argical an~ ngineer~ n~ appli- ~ :
cation~ and for~many ~indu~tria1 ~urp~ /ith a~rub~r or
. oth~r 6~r~dles~ x~bl~ co~veyo~ belt which~ on Lt~: loade~
~r~tch~ tend~i to ~a~ an~ in which the l~ad ~ tral-sf~rsed ~ -
~to th~ ~dge~ of th* bandO The~e ~d~ are enga5~d ir~ ~y a ;
~3ulde an~ supp~ sy~t~m which ;:an includ~ rotatalbl~ mend~ers
~uch a; wheel~ dlsks c3r.roller~ herelnaf~r ref~rr~d ts~ :
~r~ ~eaerally as ro~l~r~
To p~rmit the roller~ to engag~ the longitu~linal ~dgeg ::
of th~ 13an~5~ th~se ~dgea c:an be f~rme~ with r~i~fo~ing rib~9
repre~ntiny th~ck nings ~r bead~
Such b~lt~ are generally r~nfG7rced wil:h wlre or ~a~ric~
can ~3e prov~de~ in ~ne or m~r~ l~y~rs tlam:Lna~ with ti-e
layer~ ~Itlc~iz~d togeth~r and th~ ru~ber bond~d t~3 the r~s-
infor~in5~ ~r~nds g, an~ ~an ex~end G~er c)n~ r~ble dl~tance~
with wi~e span~.
A typical con~r~yor in~tallation s:~f thi~ type ::~n hav~3
dir~ction-r~v~r~ing ~rum~ at ~b Qn~ ~f th~ p ~orrned
by the band ~nd at whlc:h th~ upp~r or load-carrying gtr~tch
pa3~s d~wnwardly into th~ r~turn s'cr~tch a~ld vice v~r~a~
a~twe~n ghe~e ~rum~ the conva~y~r $tsppo~t i~ pr~vid~d
with ~p~c~d-~par~ roll~r~ wh~ch en~a~e th~ ri~ or ~a~a~
form~ on tha longitudînal ~dg~ o ~he b~lt c0nti~uou~1y
ov~gr ~h~ e~ntir~ 1~3ngt;h of e~a¢:h edg~ Th~ upp~r r~ thu~
s~rY~ principally to ~upport the w~lght ~f ~h~ upper s~retc:h
lû and ~h-~ load~ whll~ low~r ge~ of roll~r~ pri~arily su,~3-
port~ th~ w~ight og ~he 16)w~r ~r returf~ ~ r~tch ~f th~ b~31t9
I~ convent~onal conv~yGrs e~f ~his typ~ ~h~ ~pport
rvll~rs ar~ provi~lqad wl'ch ccsnlcal ~llrf~¢~ which coop~rat~
wi~h co~pl~ent~ry inclin~d sur~a~ o~ the bo~els ~ rm~n
pat~nt d~cu~n~ D~S 17 5B 812~ S 22 17 ~7~ a~ S
2~ ~8 270 ~ . ~xperl~nc~ has ~hc~wr~ ~hat the cooE~ra~on lae-
~D~aen the con~cal ourface~ ~ th8 roller~ ~n~i t~ clined
:~urf~css of ~h~ Ei~ OX' bead~ along tho ~dg~ o ~h~ b~lt
CaU~;~8 xelarciYe move~nt be~we~n the con~actlng sur~a~es with
~nergy lc~e~ an~l ~igni~ cant: w@ar of ~oth th~ ~upport roller~
arlcl th@! ribs ~
~bl~c:t~ of the In~v6!F~tion
~t is the ~rine:ipal c~b~e~ct of tha ~srese~t in~fention to
pro~lide a cor~veyor in which ~he afor~3d~s~b~d di$advan1:age~
a~e ;~vvid
Ar~otla~r ob~clt ~ th~ inv~nti0E~ is t~ pro~rlde an im~
proY~d b~lt-type con~ey~r whie:h ~s su~je¢t~d to les~ w~a~ at
~L~L3~
-: .
it~ supported edges and in which wear of the support roller~ :
i9 al~o reduced.
Still ans~her ob~ect o~ the in~ention i3 to provide an
imprc)ved conve~or whiah can be operat~3d wlth signi~icantly
le~3 eser3y exp~ndltur~ ~han con~Jeyor~ of similar dlmen~ions
and loading har~to~or~.
Tht3~e ob~e~ts a~d other~ w~i~h ~ill becom~3 appar~nt
h~rel~a~t~r ar~ at~ained, in a cor~an~e wi th~ pre~ent lr
~ren~i on, by the pro~i~ioll o~ a ~13el~-type c0ll~7ayor co~prif::~ng ~ :
a ~upport, a~ endles~ cs~nveyor belt di~3placeable alc~g that
~upport ~d haviIlg a pair of oppo~ita continuou~ longitudinal
edges ea~h fox;sed with a ~uppcart rib or bead having a ~own-
w~ardly turne~d planar runlling ~ur ar~d an in~ardly turned
~uide ~urfa~:e formIng: aIl angl~ ~ le~s than ~ with l:hat
xunnirlg surace the aonveyor furth~r comprise~ pport roîl~
ers including a pl~a~ality ~ cyli~ al ru~ning rol1ers : ~ -
~paced along ~aid SUppQrt and havlrlg e:ylindxical suraces
~upportinS3 thq~ runnlllg: surface~3 ~3f the ribs, an~ a plurality
o c:yli~drical guid~ xollers ~paced along said support an~
~ngaging the inwardly turrled guid~ ~urace3. :
me sy~tem of the~ pr~ent inve~tion. ther~Xore~ pro~
e~ a corl~y~r in~tallation in wl~ieh the surfaces e~gaged
by the: running roller~ and the ~ur~aces ~ aged by the guide
rs~ r$ in~lude a~ o~E les~ thar~ 90, thus pre¢luding a~y ~ ~:
10ad-gell~rated 3tre~ s)f significans:e upon the guide ro11ers
W~ 9 ~e~rerthe1e~s aord1ng an a~anta~e~u~; rela is:n~hip be~
twe~n the runninçl roller~ and the ~unnirlg 2~uxfac:e~ ~f the
ribs ~hich avoids energy lc~sses due to ~lidirlg ~riction or
slippage a~d prolongs t~e life of t~e belt assemblyO
~ecallse of the re~uce~ fric:tion lc~s~es and thP draS~
3-- :
~37~
.
a~soc;iat~3d t,h~r~with ~ th~ ~pa~ g b¢~tw~3~n the æupp~r~c rsllers
along ~he b~lt can be lncr~a~d arld b~lts of gr~a~r ef~ec'c-
i~e length can be~ u~d without dil'ficulty.
It ha~ b~2en found to b~ ad~ral~ta~ou~ to disp~e th2
~upport roller~ or d~ks ln tho r~g~n c~ the natural ~ag
c:urv~ of th~ ~dge~ o~ th~ con~yo~ ~el~ an~ ~v~n to pr~vid¢
~he ibs or b~ads a~ profil~ strips ha7rlng pol~g~nal c:rc~æs
~ection~ :
In one pre~rre~ ~mbs~ nt ~ ~he crc~ss ~e~ti~3n i~ gen-
erally tri~ngular witt~ ~n~ ~g ~ th{~ trl~gl~ s~cured to a
~ac2 Q~ th~ l t and anoth~r side of thQ trlangle o~ming
the hori~ tal ru~ning s~lr~c~
In this lat~ embead1~n~nt the profil~s 8trip can have
the confi~ur;~tlon o~ a right tria~ wlao$~ hypot~u$e i5
~e~ur~d ~o ~he b~le whlle i~s sh~rt l~ag ~cathe~ f~rm~ the
rurlnin~3 surfac~ u~on w~ h the b~lt iæ ~dppo~t~d by ~he rvl-
ler~,
Acco~d~g to ~r~t aEs~ther f~ature ~f the irl~en~ n 9 the
pro~ils ~tr~p which for~s the rib ~r ~upport b~ad has a
generally trapezoidal cro~s ~ction w~ th ~ne o~ the nonparal-
ide~; ex~e~d~ad and ~oine~ to the b~lt. Thi~; side c~s~ be
pro~fided ~ith a~ltlonal ribs ~ ~rooves or fl~te~ n~a~ingly
erlg~ge~d by th~ be!lt and b~nded ~h~xeto. The lar~r ba~e o~
~h~ txap~zsld can form th~2 h~lsiontal running surfa;:e.
In ye~ ani~th~r e~ odim~nt of ~h~ in~ention~ he poly-
g~nal rib S~aE~ be fs:~rmed unit~rily w~th the w~b o the b~lt
an~ ca~ be pro~ided with a c~ntral r~ f~~ er~t cablej wire~
~r str.nd ~nd can llav~3 a pl~rality ~f ~u~ually parallel
oppo~it~ ~id~ corres~30nd~ng ~ ~or exampl~ 9 t~ a hexagc~n or
octa~o~. Her~ agz~in9 or~e of the ~idQs c~ th~ polyg~
~hould be hl;3ri~0ntal with the belt in it~ norma~l $ag curve~
i~ ~lat and for~ a runn~l~ag ~urfacl3 ridlng upc3n th~ c:ylin-
dric~al rollers. As30ther ~ld~ o~ th~ pol~on can be engaged
by a rollar ~isp~e~l wi~hin the~ c~utline o~ the be!lt to pre-
vent the rib ~rom b~ing wl~hdrawn from th~ support roll~3rs~,
It has al so been ~oun~ e ~dv;ant~e~3~s to ~iZandwich
the edge of tha belt bet-w~en a pa~r s3 rib-forming pro~
li~ and to prov~ uch a proflle with sSep~ having a pair of
running surac~s in clo~;ely-~pace~ r~lation enga~ea~le by
rollers h~vimg dif~r~F~t diamet~r~ and moNnt~d ~n the 8al~
sh~ft or e~n ~ rol~er$ haYing ài~er~nt c:en~r~.
With any or all ~ th~a ri~fo~n~ pro~ s de~cr~bed :~
above~ 3ns c:~n b~ pro:~ided for detach~bly s~curlng then~
to ths b~le ~0 that~ f~r exampl~th~y e~n be:~ ao~emble~ ~n :
the b~lt ~t tll~ ln~llat~on ~t~
P. ~3~0 ef~ctlve ~ng~em~nt witl~ th~2 bs~lt ~n any oi~ ~
e~ix~nt~ de~rl~ed or to be~ ~e~c~lbed ~an be achie
20 when th4~ ~ro~ trip ha~ a portlo3l of red~t:ed ~ch~ lcnas~
exten~ downwardly beyond ~he running ~urfac~3 and flanking
and sec~r~d t~ the bel t .
I :a~h rl~ 60r the r~p2c:t~ve r~b-for~ g proilL2 s~ri~
ca~n 3~* provl~e~ with a r6s~nf~rc~rnent in~ert ~ f~ric9 ~:able
or the 1ik~a which ~ n~nyield~l~ ~nder ten~ion and9 there-
ore 9 has high ten~ str~ngth and/or hi~h c~3~p~e~si0r~
~tr~ngthO Theæe ln~erl:~ c~n ~xtend ~he full height of the
engag~ t sur~ac~ 3tw~e~n a profile ~trlp and th;E~ }3elt or
.
- 5 ; ~: ~
.~ . .
~3~
~an be dlspos~d only in the reç;ion l~m~diately above th~
running sur~ac6~ and car~ ren 6~:;tend para~ l to th~ runnirlg
~urfacç~O Th~ in~ert~ o hiyh c:ompr~ssion ~nd tl3n~ile strength
may ~ form~d unitarily with ar~y other reirl~orcem~nt di~pos~d
in the rib or profil~ ~trip,
Wh~n th~ profil~ st3:1ps are not r~ov~ly attached to
tl~e bel~9 th~y c~n be affixed by a~hes~ve~ or vulca~i:sati~n
a~ th~ ~ead or rib c~n b@ ~om,~o~d of th~ ~ame mat~ri al
th~ ~al t or anotll~r materi~l ~
ha~ al ~io b,e~n ound to b~ advantage~u~ to l;~OUFI~ a
sup~port roll~r a~d a p~esslng roller upon respet::t~ve arm~
which ~ra~dle ~h~ b~ad an~ fc~rm a y~ke whi~h i~ pivQtal
a~u3ut a~ axiJs parallel to the P ~ngitudinal edge~
The bel t it~eli~ can be ~rovld~d ~rilth relnforc~ ents
:~o~ transv6~rs~ ~ti~ ing ~ pr~rably 8~3 that the trans~ s~
stiffn~ ln th~ edge ~gio~ is ~reater th~n ~he ~tiffr~s
at the cent~r of th~ W2
The belt can als~ pro~i~led with at l~:ast one in~x-
tensible~ in~ert ru~ning iil its longit~ al ~irectit3n to
prs~ de ç~r~t~r tan~ile ~tr*ng~h ~, ~hi~ rt t~rminatirlg
shQrt s~f the ~dge r~gion~ provided with the support rlb~
acros~ lthe width of l~h~ b~lt. The lnse~t can have a width
~ubstantialïy ~qual t~ th~ axial l~n~th oiF the~ dir~ction
-reYerslng drum~ ov~r whi~h the b~ pas~;es at th~ ~n~ o
the~ ad and r~turn ~t~tchesO
Th~ ln~rt i~ ad~anl:a~eoa~sly for~d f~ora two l a~ers
of reirlforcing s~trar~ds or thread~ ~ e.g~, in a fabr:~c cor~igu~
rat10~a oriented on ~he bia~ so that th~ thread~ u~ th~3
layers ~re ~ncline~ to ~rle anoth~r.
7~
Of co~r~ the inext~n~l:bl~ r~infoxcem~3nt c:~n bQ dls-
posed~6~xclu~1vely at the c~ntd~r of the w~b o~ th~ b01t or
only alt tha edg~ r~gion~ th~3re~v
According to yet anoth~r $~3ature of the inv~sntion ~ th~ ?
e!dg~ regi~n of the belt i~ ~parate from but c4nn~cte~ to the
web th~r~3~3f ad~acent th~ ~upport rlb.
The a~ve ancl other ob j~c1~ ea~ur~s and ad~antag~ of
the pre~;ent ~nv~ntion will become more r~adil~f appar~nt ~rom
the foll~3wing de~cr1p~ion ~ re:Fererlce be~ing ma~e to the accomp - :
anying dr~win~ in which:
FI(;,, 1 is a diagrammatic: ver~ical ~ection through the
let hal~ of a conveyor belt installatiQn embo~ying the inven~
tion;
FIG., 2 ~ ~ a view sim~la~ t~3 FIG. 1 ~howln~ the r~ght
hal~ of a ~onve3yor belt in accordanc~ with anoth~r ~a~bodlment
of the inv~ntion;
F~IGS~ 3 thrc~ugh 7 are detail ~ 3WS in transverse s~ction
illu~tra~ g o~her e~bodi~ent~ of edge pro~lles ac~ord~ng tv
the in~vention 7 ~ `
FIG. 8 i~ a cre~ ctic~n through a~3 end t)f th~ con~yor
mbly ~howing th~s drum over whih t7~e bel~ pas~es in eîe~
vag ion;
~IG. 9 i~ a l3~rspec:tlv~ sectiorl diayr~n~na~ic~lly illu~
~i:ra~lng i~atur~s o~ tl~e! b~l~ acc:c~r~ing ~o ~r~other e~bodi~nt ~ :
3:~ the ~v~n~ior~; :
~IG,, lQ i~ ~ cro~s ~ec:ti~4nal view through the l~ft haIf
~:1.3~
of another bel t ~ n accor~:lance with th~ in~/ention j and
F^IG" 11 i~ a slmilar s~ctlon ~howing a right hali~
of y~t ar~other b~lt.,
~n~ ,
A ct~n~eyor ~yst~m ln accorclY~nc~e w~ th th~ pre~nt inven~
t~c-n can cwlpri~e a f ra~n~ or othlar ~upport 1 upon whi~h a
~slural~ty s3~ lon~ dinally ~pac~d ~upport wl~e~ k~ i3r
rol3 ~r~ 2 ar~ mounte~ Yi~ th~ir ~haf~s 2a:~ r~ect~ be:ar~
iRg as~m~ s az~cl lil~e ~tructure known ~ ~e~
1~ The roll~r~ ~ SU~pQrt a conveyor b~lt 3 s3f rub~ar or
like ~l~xibla ma~r~ al shown y ~ n the u~p~r s~r~tch ~ t~ sag
under a ll~ad Lo
Th~ belt is inv~rted ~:n its lower stret~h wh~ich al~c
~ag~ and is likQwi~e support~3d 013 rollers ~uc~a a~ th~s~ i~lu
~trated at 1 00 a~d 1 01~.
m~ b~lt 3 rest~ by ~an~ Q:l~ ri~)~ 4 form~d al~3n~ its
long~u~inal edge~ 9 ~pOEl th~ roll~rs 2 ~ tbat the con~a ;:lt
betweerl ~ach ri~3 and ~ach roll~r 2 1~ excluslvely a contact
b~stwe~n a planar surfac~ 5 s:~f the rib A and a cylir~dg~r sur-
~0 face ~ tha ~up~ort roller 2 7 the c~ntact sur~ac~ b~ing
hori~on~al a This ~ans that g~neeally th~ axis of dislc 2 :
hvrizontal .,
Th~ ~elt 3 ha~ a width B ~only ~artly shown in FIG~Th~a ~rar~v~r~@ stif~s~ of the ~iell~ 3 i~ 80 din~nsis:3n~d that
a f~rc~ P~ is ~ rate~ at the rib , wh~ch appl~e~s a ~oment
Pp,B/2 in the direct~n o~ th0 arr~ and to th~ ~u~ort
roller 2
-
~137~1~
From FIG. 2 ~ will b~ ~apparent that the rollers 2
can be iournal~d on arm~ 7 ~orming parts of bell-crank
lever~ who~ o~h~r ~rms 9 c~rry guid~ rollers 8 whlch b~ar
upon inner surfac:e~ of ~h~ eùg~ 4 of the belt to r~tain 'ch~ :
sam~ upo~ the support rol l~r~ 2 . Th~ arms 7 and 9 ar~
rlgic~ly conn~c:'ced tog~th~r and are ~ ru~d at 102 t~ the
8uppoie~t ~ si~llar arm arrangemi3nt 1n3 s-r~-5 to support
th2 l~w@r ~treteh o~ the! b~lt~, Alt~r~ati~ly9 tha ~uid~
roller~ 8 may b~ ~prin~ b~a~ again~ th~ in~r ~r~a~e ~
th~ ~d~ o~ 1 bn ~ome ot~er s~!ppor~ C311 the :ra~a lo
~G. ~ ~h~ws th~ ~d~e r-giof~ the bel1: 3 ~s for~d
by a trîan~ular ~o1~ strlp 10 corltalnin~ ~ c~l~ ~r wire : :
11 s~r~ir}g a~ a coQr~s~n and tensi~n~r~sist~r~t in~ertO
~h~ trian~ r ~trip 10 ha~ ri~ht-1:ri~ngle pro~ le
.
wh~e ~all 1~ 12 I'o~m~ ~he ri~n~ n~ su~face ~ on ~h~ s~p~
p~rt roller~ 2.~ The hypote~e~ however~ ~ pr~vided with -
a~ aw~tooth arr-y 15 of l~ng~lt 3dln~1:1y ~xtE3ndin~ ~for~ati~n~
s~3aelng: wlth ~ho~: of the bel t 3 ~ erv~rlg to ~ t ~h~a~ ~ :
~tw6~-n l:h~ ~tr~p ;l~ ~and th~ belt 3. ::
~long l~h@~ hy~pot~r~use~ the strip i~ ~xterld~d downwardly
at 14 in a portion ~f downwardly tap~ring configuration to
~ncrea~o ~he ~lt-s~nga~m~nt su~face,. The hypoten~ h~ :
tr~angl~ ha~ been Y~hc~wn a~ 13 in PI~ 3~
In ~he e!~mbc~d~m~t c~f rIG. 49 the prc~il2 stri~ 16 has
21 g~nQ~ally tra~e2s~ al C~2Ss ~ecti~n w~th ~ne ~: th~ rlorl-
:: . :
parall~ es 17 ~ c~nn~cted to ~he ~:3elt 3., Th~ lar~6~r ba~e
or~ ~he ru~ning ~urface a~d im~ed~at~ly abo~ ~h~ run~ing
sur~ac~ is a rein~rc~ lay 19 ~rovided~ e~ of individual
.; g_
.. . .
~ :
L3~
strands or fabric ~ as repr~s~nted by the broken llnesO
A ~ong~tudinal r2inforcement ~ al~o usee3 ln this
embodint~nt and the flank 1~ o~ th~ trape~:~ld i~ extend~d
downw~rdly to i~C3~~aSe the~ b~nd area w~th the be~lt 3~ Th~
interf~c:e 1~ formed by groove~ or rib~ which c:on~itu~e~
in cro~ ~ecti~n ~ a tooth~e~ arrange~ont 20~
P~Ge~ 5 ~hows an~3th~r e~s~e regiQel of a h6~1t 3 in which
two g~ner;ally trap~oid~l b~ad~ 21 are~ fe3r~ed on ~ppo~ite
~i~es of ~h~ ~ongitudinal e~ge of thQ b~lt 3 unit~~ily
therew.~th ~o that the rib ha~ a gen*r~lly h~xagonal cro~s
section with at l~ast t3n~ ~urf ~c~ 22 ormiag the ru~lning
~urface.. The ~mall~r J~ase o~ the trape~o~d ~f the oppG~ita
~ead ~ r~presented at 23 g can be engaged by a guide rc~l ler 8 .
An edgQ rib i9 formed by a strip in lthe embodi:man~ os~ -~
~IG~ 6 a~ w~ althoug~a h~re ~ch~ strip fclr~; cwo a~ace~t
a~a 24~ each o~ ~r1an0ular cross sec~i~n and imp2lr~1ng a
~teE3pe!d-rib cor~f~guratiorl tv the edge of th~ beltO Each
of 1:he~e r~ orms ;~ flat a~d horizonta~l runnlng stlrace
25 supported on ~ r~pec: i~a roll~r 2. Tha roll~rs 2 may
O be staggered or c~axial,.
Th~ r~b ~in FIG. ~ i~ f~rmed by a palr of trian~ular
p3~c~file s~:rips ~6 whlch ha~e th~ configuration ~hown in ~ :
FI~;. 3 l:>ut th~ tQ he~ arr~ngement of F'I&~ 4 an~ whi~h ~:
a~e cor~n4cte~ 'cogeth~r ar~d to the belt by ~31~ 270 Th~
bolt~ 27 en~le the!t edge strip~ tc~ b~3 daliver~ to lth@
con~yor 2;ilte :~;epara~ely from the web ~3~ th~ b~l~ 3 and ~o
be ~ n~ctl3d to the lat~r ~t ~his sltf~6, Th~ s~rlp~ 26
--10--
-
~- :
hav~ exten~;ion~ 28 which al ~o may be trav~rsed 23y ~ bol t
a~ represent~d by Shla d6at~da~h line ;~lo Inlay~ 32 of .
rein~orc~ng fabric or array~ of ~ndividual 3~rands are
repr~ented at 32 a~d ar~ emb~ddled 1 n thR strips 26 ad-- :
ac~nt the aces o~F th~ 1 atter conn~ctad l:o th~ bel ~ 31~ : :
As c~n be s~n rom E'I~ the in~xt~ slblQ re- ~ :
lnforcing ins~rt 33 i~ th~s web o the~ b~alt can terr~inat~
i~wardly o~ th~ eùS~e r~glon~ 34 prQvi~ with th~ rl~ o~
b~d~ while trar~ r~e rein~rs:1ng inla~s 2S above an~ b~low
the r~in~c~rc~nt ~3 can ex~end o~er ~he ~rltire wldth ~3f :~
~h~ beltO Th~ w~th ~T f th~ drum ~3vè~ which the belt
- , .-., ~ i, . . .
pa~es corre~ponds to th~ wlclth B~ ~i;agrammatically r~pe
~n~e~ by 'ch~ two layers 37 a~rld 38~ by array~ of strands ~:
in ~he ~ia~ with the dir~ct$c)n~ o~ the s~rands
cro~;s;irlg tsce F'IÇ~. 9~
Th~ en~ral porti~n o~ th~: w~ can ~ a~ carl b~ see~n
~rom F lGo 10~ be provi.~ed wi~h an array of longitudinal
~trand~ i~n th~ f~3rm of wi~es constitutillg inextensible .
inS2rt: 39 providir~g longit-l~linal r~i~forc~ment while the
transv@~r~ reinforcement is repr~ented with brok~n l~nes
by ~he in~erts 40~ :
Th~ belt 3 m~y be fabricat~d separately from th~
~ead 41 ~FIG. 11 ) and $~ured t~ th~ latt er re~ asably by ::
c~Lamp-~ 42. Te!~sil~ ~tre~ i$ taken up by 'che cables 43
e~bedcled in the bead 41
~11~
