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Патент USA US2403617

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July 9, 1946.
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F, G. SKI-¿WMS
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BELT
Filed Aug.v 25, >1943
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35
2,403,617
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2,403,617
Patented July 9, 1.946
UN-'Vli’lâglìßYv
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ES PAT
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2,493,617."
BELT
OFFICE
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Ema. G...skeshan„akkrtn, omo„.assigmr Yto 'rileL
BL- ELG'omîricIi; Ghmpanygllïew 'York„ Nî Y; a >
corporation ofiNew Yorkv ' f
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» Application August-25, 194s, serialV No. 500,013;
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@claims-Á' (Cuve-232)“
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Imaccordance with Athe invention, oneior sev
'Ichi-s» invention ,relates »tor belts or; «reinforceri~4v
erali of the. lowermostplies, 9.0i. the.. bodyj. are,
rubberror other, nubberî-_l-ileematerial, andtcfthe.
manufacture: thereof(v
is. especiallyH usefuLin
cutïsomewhat narrower soI „that when. theyv are
superimposed. ’on` the'. wider, v plies..l of. the, bodta.V a
belts-1î of the- ñat type: fon conveyors, . or.` for. power
transmission;
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recess or, rabbet.4 im formedA along eachlowerlmargin'` outwardly from: the. narrowed.; plies.l 9., , to
provide for »the anchoragek of- ,the cover. material.
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In~ belts. of prion construction-,~ difliculty ¿has
been yexperienceclr especially f with. s'm-rthetic,r rub
VIn order. izo-„anchor the, rubber coversl andl'ß '
ber materials as. distinguished l from ,natu-ral, rub
alongtheledges of' the,> belt securely to; .the fab-_
ric..of `thebody ‘5,the. outer cover. 1 isjf‘urnisheddn
suiiicient width and thicknessin its unvulcani'z'ed
ber, in securing the desired strength of adhesion
ofrthezcoyenîtaqtherjedge of the belt.V When a
heavy gauge type cover has been folded around
state, as shown perhaps |more clearly in the as
the edge of the fabric body, and trimmed even
sembly stage of Fig. 2, so that the cover can be
with the bottom of the carcass, the edge thus
rbrought aroundthey edges of the longer plies, cut ' `
formed sometimes has not effectively adhered to>
the fabric plies, or the lbottom cover, and some 15 and ñt to ñll the recesses I0. Thus, at each side
of the belt the cover 1, being bent around the
times has admitted' soapstone or other foreign
wider plies of the body 5 and ñt securely to the
matter, and the joint at times has opened during
plies at the recess, forms the edge of the belt.~
The bottom cover 8 of the belt is formedby a
The principal objects of the inventionare to
provide for security of attachment, to provide 20 somewhat lighter gauge stock and is securely ad
hered to the bottom of the belt and the margin
for resistance to separation along the’edges ofv->
of the top cover stock that extends into the recess
the belt, to provide effective cover protection to
HJ. The body and the cover of the belt- there
the'edges of the belt as Well as the working faces.r
after is vulcanized under heat and pressure into
thereof, to provide for longer belt life, and to;
a belt of united structure.
provide for economical and convenient manu
vulcanization.
facture.
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The belt construction provides edges of the belt
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These and further objects will be apparent from
the following descriptionreference being had to
the accompanying drawing in which,
Fig. 1 is a cross-section and perspective view of
the belt constructed in accordance with and em
bodying the invention, parts being broken away
that are substantially integral with the cover,
and in addition a construction to provide in
creased strength of anchorage of the cover stock,
v 1 and 8, to the body of the belt 5.
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Referring-to the embodiment in Fig. 3, a belt
construction is shown where a different arrange
ment is provided for tying the bottom cover stock
22 at the recesses 25 on the lower periphery of the
Fig. 2 is a cross-section and perspective viewA
of the belt structure at astage of manufacture. 35 belt. In this construction, the light gauge bot
tom cover 22 instead of terminating at the edge
Fig. 3 is a cross-sectionA of a modified construc
of the belt, is folded around into the recess 25
tion.
at the bottom of the belt, trimmed and terminated
Fig. 4 is a View like Fig. 3 showing a further
at the edge of the wider plies 20 comprising the
modified construction.
.
Referring to the embodiment of the invention 40 body of the belt'. Then the thicker-gauge top
cover stock 23 is folded around the edge of the
shown in Figs. 1 and 2, the belt comprises a body
belt, trimmed and ñt over the bottom cover into
5 of superimposed strength-giving plies of fabric
the recess 25 at the bottom margin of the belt, the
or cord material or both, and surrounding these
narrow plies 24 being shortened to the extent
plies is a layer 6 of loosely woven or other open
mesh fabric which may enclose four sides of the 45 that the recess thus formed will bey capable of
for the purpose of illustration.
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slab- comprising the tension rbody and helps to
unite the fabric layers to atop cover 1 and bot
tom cover 8, this open-mesh fabric being thus de
sirable in some cases. The material of the top
holding the stock without objectionable bulging
` beyond the desired contour of the belt. A layer
2| of loosely woven or other open mesh fabric
Ymay be included between the cover stock and
cover 'l may be of a suitable wear-resisting rub
adjacent plies.
ber or other rubber-like material and relatively
thick for wear-resistance and cushioning. The
bottom cover 8, which ordinarily is not subjected
to as high a degree of wearas >the topy cover, may
be thinner and of a suitable rubber-like material. 65
Referring to the embodiment in Fig. 4, the belt
has’a modified construction for tying the bottom
cover 32 to the body of the belt. Instead of
narrow plies 33 only at the bottom of the belt
to provide a recess 35 for the anchorage of the
2,403,617
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2. A belt comprising a strength-giving body of
top cover to the body of the belt, one or several
of the upper plies 34 are likewise made narrower
plied fabric material, a cover of rubber-like mate
to provide similar recesses 36 to receive the mar
gins of the bottom cover stock 32. These upper
recesses 36 provide additional anchorage of the
bottom cover 32 to the body of the belt. The bot~
rial on its top and its edges, said body being
marginally recessed at both edges of a face there
of and said cover having margins extending into
tom cover> s_tocklis> of suii'ìcient width Vto 4foldinnto
material overlapping thejop çover at said re
the recesses, and a lower cover of rubber-like
the bottom' _recess made .by the narrow plies';_ up
cesses, said‘body and covers >being mold-fvulcanized
and over the wider plies and into the'recess pro
vided by the narrow plies at the upper-margin
of the belt, cut and terminated there. Then the
into a united belt structure.-
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. 3. A belt comprising a strength-giving body of
plied fabric material, the lowermost plies being
Vstepped back to provide marginal recesses at its
lower edges, a> lower cover of rubber-like mate
the bottom cover, cut and terminated‘in the
lower recesses as illustrated in the drawing. " Yrial extending into said recesses, a top cover of
top cover of heavier gauge stock is folded around ` i
This provides a strong construction especially , ` rubber-¿like material of a width to cover the edges
of said body and extending into said recess and
at the edges of the belt Without using excessively y
heavy gauge top cover stock. '
Variations may be made without departing fromE ,
the invention as it is hereinafter claimed.
I claim:
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`overlapping the bottom cover, said body and
covers. being mold-vulcanized into a united belt
structure.
4. A belt comprising a strength-giving body of
20
yplied’ fabric material, said body being marginally
l. A belt comprising a body ofV reinforcing
material having a longitudinally extending rabbet
recessed at its upper and lower edges, a bottom
in a margin of a face thereof open to said face'
and the edge of said body, and a covering of
cover of flexible rubber-like material of a width
to extend into said recesses, a top cover of rubber
rubber-like material extending entirely ,about
said body andrhavíng a longitudinally extending
lapped ’splice seated invsavid rabbet thereby pro
lapping relation with said bottom cover about all
said recesses and said body and covers being mold
like material and of a width to be received in over-`
viding increased- corner ledge thickness of said
rubber-likematerial as compared to other por
tions of said covering,.said belt-ï being a 'vul
canized unitary construction.
vulcanized into a" united belt structure. `
30
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