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Патент USA US2119476

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1 May 31, 1938.
J. A. WEBB
2,119,476 ‘
MACHINE FOR MAKING MULTI-PLY BELTING
s Sheets-Sheet 1
Filed June 12, 1936
NRNH
‘
Enventoxq
. James A, M266
T attorney
May 31, ‘1938.
2,1 v19,476
J. 'A. WEBB
MACHINE FOR MAKING ‘M‘ULTI-PLY BELTING
Filed June 12, 1936
5 Sheets-Sheet 2
3
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Zinnentor
James A. hébb
(Ittorneg
‘
May 31, 19348.
2,119,476
J. A. WEBB
MACHINE FOR MAKING MULTI-PLY/ BELTING
Filed June 12, 1956
5 Sheets-Sheet 3
mmv
' Zhwentor
(Ittorne
_
Mi! 31,1938?
I
,
J. A. WEBB " I
.
2,119,476
MACHINE FOR MAKING MULTI-PLY BELTING
File'd June 12, 1956
7/27
I
. 5 Sheets-Sheet 4
'
-- ‘7/4
Zhmentor _
James A. We-bb
8“
_
W”?
.
.
G ttorneg
May 31,.“ 1938.
J_ A, WEBB ‘
I 2,119,476
MACHINE FOR MAKING MULTI-PLY BELTING
I
Filed June 12, 1936_
5 Sheets-Sheet. 5 ‘
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Jnnenfor
James A. 141256
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Patented May 31, 1938
2,119,476
UNITED STATES PATENT OFFICE
2,119,47 6
'
‘MACHINE FOR MAKING MULTI-PLY
BELTING
James A. Webb, Buffalo, N. Y., assignor to J. A.
Webb Belting 00., Inc., Buffalo, N. Y.
Application June 12, 1936, Serial No. 84,887
12 Claims. (Cl. 154-3)
This invention relates to the manufacture of
belting, and it has particular reference to a ma
chine for making multi-ply leather power trans
mission belts.
5
A multi-ply leather belt consists of two or more
plies, each of. which is formed from strips of
tanned leather which are secured seriatim at their
ends, and which plies aresecured to each other
along their contacting faces by cement. In the
belting industry, the term “cement” is employed
to designate generally suitable securing media,
among which are “hot cement” consisting pri
marily of animal glue, and “waterproof cement”,
which is essentially a synthetic composition such
Lil as a nitro-cellulose adhesive. Generally speak
ing, the waterproof properties‘ of the synthetic
compositions make them preferable for belting
purposes, but there have been a number of prac
tical difliculties which heretofore have militated
against their more extensive use. One is the high
cost of the ?nished belting when such composi
tions are used in the manual assembly practices
known for a number of years.
It has, therefore, been for some time a desider
25 atum of the art to improve the art of belt making
to an extent permitting the more’ extensive use
of waterproof cement, while, at the same time,
preserving to the ?nished belt those desirable
properties of strength and life which characterize
a well made hand-assembled belt.
In the ma
chine making of belts according to methods which
have heretofore been proposed, certain defects
not found in the old manual methods have arisen,
due to placing the belting or the plies thereof
under too great tension during the assembly oper
ations, thereby leading to such troubles as ply
separation, which, to a certain extent, have off
set the economical advantages sought bythe use
of machines. It is known, for example, that
40 leather will stretch to a certain extent if placed
under tension, but due to the nature of the sub
stance, it is extremely di?‘icult, if not practically
impossible, to maintain a uniform tension
throughout a number of conjoined plies without
inducing additional complications. This is due
to the fact that the hides from which belting
leather is made are naturally curved, instead of
?at, and the application of excess tension there
fore causes the ply to curl along its edges.
In seeking to improve on the practices of the
prior art, and to devise economic ways to make
belting without sacri?ce of. the desirable proper
ties of the belt, I have‘ discovered that a sub
out adversely affecting its life, if, during the
assembly operations, only one ply is subjecte6. to
a limited tension, while the other ply is main
tained in its natural condition. To apply this
discovery in a practical way, I therefore propose
to stretch to a limited extent one of the belt plies
in a continuous band, and, while it is so stretched,
to cement to it another ply of leather which is
under practically no tension.
These two plies are
brought together, after application of what ever
type of cement is desired, and are fed into a press
which applies suitable pressure to unite them
?rmly, together.
I have also discovered that high grade multi
ply belting, either with or without the inclusion
of the stated single ply tensioning, may be made
economically and rapidly by a method which in
volves bringing the plies, immediately after the
application of the cement, into mutual contact,
and then forwarding them to the press for ?nal
contacting operation by means of a pushing, in
stead of a pulling action, whereby the stated un
desirable tensioning of the belt, or curling of the
edges and ply separation, may be obviated. In
working according to this method, I furthermore
contemplate the employment of an intermittent 25
mode of action, in which the plies are cemented,
contacted, and forwarded during one interval of
time when pressure is relieved, and then these
actions are interrupted during a following time.
interval while the pressure is applied.
The present invention also contemplates a novel
machine for making belts, including a novel com
bination of parts permitting of rapid and ECO
nomical operation while utilizing the processes
outlined above. The various principles of the
5
machine, and the various speci?c objects, details,
and advantages thereof, will become apparent
from the following portions of this description,
and will be more fully pointed out in the appended
claims.
In the drawings forming a part of the descrip
tion,
Fig. l is a side elevation, with the parts illus
trated more or less diagrammatically, of one
bodiment of a belt making machine;
Fig. 2 is a view similar to Fig. 1 of a modi?ed
form or a second embodiment of the machine;
Fig. 3 is a fragmentary perspective view show
ing the mode of connecting the belt plies together '50
when using the machine of Fig. 1;
Fig. 4 is a plan View of the cementing and feed
ing portions of the belt making machine; a
stantial portion of the excess stretchiness of the '
Fig. 5 is a side elevation of the parts showr1111
55 belt may be eliminated during manufacture, with
10'
Fig. 4, drawn on a slightly enlarged scale;
V
V sheave V
is then’ placed under the desired tension by ad- a‘ '
justment of the pulley I8, it being’ of course
Fig. 6 is an enlarged section on the line 6-6 of
Fig; 4, showing particularly the cementing unit
1 of the machine;
understood that during this operation, the press
u
7
Fig-7i-s a sectionon
7
the line"|i—'1 of
I6 and rolls I4 are open to permit the free passage ‘
5; ‘T
of the ply.
7 In speaking of tension in the ply II, it may be
a limited tension’ is
here pointed out that only
I
intended. Experience has indicated that if the
V Fig._8;is an endelevation at the driveend of
a
the feed uhit'of the machine;
Fig. 9.is asection on the line 9—-9' of
8,
"a
showing particularly thedriving connection bee , tension .in the usual grades of leather used for .
twee'nthe various rolls ‘and also the control for ' belting exceeds a value of say one per centcor more 10.
the driving mechanism ;'
‘elongation; the belt tends to run crooked, onthe , ;
r
the line 10-40 of. Figts :
Fig. 7 10 is aisection'on
pulleys, the plies separate at their edges, and the r
" showing a detail of the connection between pairs ' ,belt loses desirable elasticity and life. .:-On the
~ofro1ls.,,_
7 Referring
5;.
_
"
~
?rst toFigs. '1, 2, and 3, there is illusl»
15 trated more or less diagrammaticallysome'of the
other hand, a limited amount of tension maybe . "
introduced into one'ply only of the belt which 115
will vnot'lead to the stated defects, but, onithe r,
‘features of the'machine, as well as" the "novel? ' contrary,’ will increase the ,life and-loadrjtransg
method‘contemplated by this invention.» At the‘ m'itting value of the?nished' product. Such lim-i '
i right of’ Fig. 1 is shown a reel, l l, on which is‘ a ited' tension may, for‘general types of belting, be
‘roll or band’ l2rof ga relatiVelylong-‘l'erigth of assumed to beone half of oneper cent to one-per
leather'whichtis to, constitute one ply;- of the ?n,- ‘ cent elongation, the :upper limit of course being,
‘The free, end ‘of, the -ply_ l2r'extends safely under that value'which distinguishes be
7 belt
' jished
‘through. ‘a1 cementing] unit, 1 generally designated
helpful and harmful " stretching. For"
'"byfthe; referencefnumeral‘ l3, andgwhich will tween
;muchlpractical work; this limit can be deter‘
be Qhereina'fter 'y‘moreg, fully described, After 7. 'ininedribyobserving the curling tendency in the 25
‘emerginggfrom the cementing bath, the ply I 2'
" 215
edges of the'ply. In referring to limited tension .
passes "through foneiormore pairs of feed rolls
or the 7pre-stretchingnof thexply l'l, it will there;
forebe-understood that ‘such ‘term is used to con-15" I’
note: the features just stated.
' 1:4 ,j :and then- throughan intermittently "actuated
' platen type of press, IS, in 'which it is. ?rmly
pressed against the other belt ply
Afterjthe ply ‘H is set up with'a suitable degree 30'
j‘: According 1to the plan shown in Fig. 1", the’
r
6f
pre-stretching, the freeend'of the ply His. _
other ply 1110f ‘the'belt extends in a continuous ‘connected
thereto atthe joint betweenithe ends, '
length‘ from the parts‘ just describedto a stretch- ‘by means of a belt clipper Z‘Iformed with, pro-- ‘
' inglpulley l?‘ofcrelatively largediameter,
jecting hooks 28 which can ‘engage the pintle 26.
r'preferablyjis located a, substantialdistance from ' The
conjoined plies are then run through'the rolls
thejp‘ressl?. It, may here rbeexplained that
El 4, and theimachine'is set up vready for operation;
-‘th‘e'se: "beltapliesjrnay be of c0nsiderablev length,
It'is to be understood thattin operation, it is"
7 , that is, from say'twoihundred to three hundred
‘contemplated that the two-plies l2 and 11, in?
'well as the operations hereincontemplated?t is passing through the cementing “unit |3,“wi11_;re
ceiv'e on contacting faces aAco'ating of cement
42) therefore desirable toplace’the pulley I8 and vits :andr'rwillVbelbrought'into contact.v Upon emerging .,
support, onjrar'track, 20,,so that it can be ‘moved
or?more feet, and due tothe ‘extreme lengths, as
from the bath the contacting ‘plies are ‘forwarded:
by the; feed rolls 14; to. t-he‘press . l6 toreceive '
. toland ,from'the press tosuchextentas is required‘
'I'hev supportJfor the pulleyijjli8 :consists of a
pair .o'fgspacedv brackets 19' each formed at its
. [upper end with, anadjustable bearing 2.] adapted
'
enough [pressure to force them to stick to each
other-permanently, These operations of coating,
7 forwarding, and pressing are intermittent That
is to say, by suitable means hereinafter» described,‘
' V to receive the adjacent end of the trunnion 22 r ' the press 16, whichis provided withvertically
‘of th'elpulley I'8;1 Thelo'wer'ends ofthe supports '
‘movable platensr'alternately squeezes the plies
flimay‘belmduntedin 'slid'eways oritracks 20 lo
together, and recedes therefrom. , When thepres
cated on 'thej?ooryfor adjustment ‘with. respect
7 ‘to- theipress 16.‘ 1 Each bearing 2| is provided with .
sure i'se'applied, ‘the ‘feeding operation is inter— 7'
{a screw 23, by means ‘of which‘the ply [1 may be?
they aresu?iciently spaced,the feed‘rolls' HI and
7 ' placed under-such tension as is desired.
rupted until’therplatens irec'ede,vand, as 'soon as
Starting at the leftghand side of the press I6, ’ thecementing‘unit is driven, to coat and advance
the path ofthe ‘ply I‘! may be traced as follows: . a new stretch or length ofbelt into the press. .
"555 Fromthe left hand side of the press [6 around
'thepulley. '|8,‘__.then along orunder the ?oor line
‘to pass ‘underthe pedestal of press [6; thence to
760
1 ‘a guide _p‘ulley_24 located'below the cementing
unit 13, thence up and into the cementing unit
' ,Theplatens then move down ‘and the feeding op-~ ,
'eration ‘stops, and this intermittent action is con-. ,
tinned until the ply 11 has traveled icompletely
‘around, itsip'ath, and the joined ends are again in‘ .
orjadjacent the position from‘which, they started.
and out towards the left, at which point theply I1 ‘ {In moving-through this repeated sequence‘ or“?
‘is brought into contact 'with the ply. l2, then pperationsthe ply I‘Zis', of course, securedto the,’ '
through the ,feedrolls rldrtowards the press I6,’ Vply H, which, during the Seine" time, is'unwound' " “
‘and :iinallyrintoj ,the'pressj ‘where the plies are ' ffrom its'ireel Ill‘. Asithe plies are-thus assembled '
f
/ and secured ‘to each other, the ply H alone is 65,
It;is to beiunderstoodrthat, at__the beginning of " ;maintained under ‘a suitable limitedhtension,
intimately secured toreach other, Q "
thahelt making operaiionsthé page Pulled from lwhile‘ theiply :12’ is under substantially, noi’tension
iits‘reelillrandisthreadedthrough the cementing - Tsave,thatnegligiblelamountincident to its being ~ '
> unitli, while. the .9131, "is threaded aroundrrthe'
pulledva'longiwith the tensed ply 'll. ’ When’ the '
70
‘equipment in the pathyjust. described.‘ In setting ~ iply lilrhasimoved around‘through'its circuit once,
' up‘the ply 11, iti‘sjconvenientto'join theends by, , thereforeritjis jinjveffect' replaced by a multiéply
'ineans oinaihinse qonneqtionorrbelt clipper; such " "belt, in ‘which one ply is;pre4stretched,»while the
' as is illustratediin'Fig.
Each end ofthe plyrl'l 1 :otherjis initsnaturalj or .untensed condition.
receives pneeportion ,_25;;of:§_the' hihge which is ' h'l‘heresultine' prodmta vrimltieply. leather belt 7
‘ connectedj‘to'the other by'a pintle 2B. 'r'rI'heiply having secured plies existing under ‘differential
2,119,476
tension, is, insofar as I am aware, a novel article
of manufacture, and tests may be readily made
thereon to show that it is superior in power
Each block 52 contains a set screw 55 for retain
ing the guides in their desired position. In Fig.
transmitting properties and life than prior art
belts known to me, in which none of the plies
4, only one set of guides is shown in use, the re
mainder simply being displaced for use as desired.
was under initial tension, or all of the plies were
uniformly stretched to an undesirable extent.
The cementing unit I3 is disposed adjacent
the rails 42 to receive the plies from the spools,
and to apply a coating of cement to oneface
thereof. During and after movement of the plies
through the cementing unit, the plies are main 10
tained in proper lateral position with respect to
the machine, by means of suitably located addi
The apparatus shown in Fig. 2 is, to a large
extent, a duplicate of that shown in Fig. 1, but
10 differs primarily in that the second embodiment
is preferred when it is desired to make belts
which do not include the foregoing differential
ply tension. Thus, the second embodiment in
cludes the reel II for the ply I2, cementing unit
15 l3, feed rolls [4, and press I6, all of which oper
ate as hereinabove described.
tional guides.
the rails 4|, and also plates 58 mounted between 15
The plates are spaced, as
shown in Fig. 6, for example, to receive spacer
bolts 59 which are threaded to receive adjusting
nuts 6i. These members may be transversely
positioned in the spaces between the plates to 20
contact the sides of the plies and thereby pre
A second reel 29,
the standards 46.
receive a band 3| of leather constituting the
other ply of the belt. This band extends around
the guide pulley 24, but in the opposite direction,
and thence into and through the cementing unit
l3, where it is coated and contacted with the ply
l2. The conjoined plies then proceed through
the feed rolls l4 and the press l6 in the form of
25 the belt 32, which is wound up as desired on the
receiving reel 33, located in brackets 30 a suitable
vent their lateral displacement.
6|, between a pair of rolls including the appli- '
cator roll 65 and the positioning'roll 66.
roll 61 which is mounted as shown in Fig. 6 in
bearings 68 to the lower side of the rail 42. This
ply then passes over an applicator roll 69 similar
to'the roll 65'and around a positioning roll ll
similar to the roll 66.
under such tension, there is a strong chance of .
In this manner of operation, it
will be observed that the assembled plies are not
tensed during the pressing operation, nor are they
signi?cantly tensed by winding on the reel 33.
It will, of course, be apparent that this mode of
operation is entirely permissible, by virtue of
the employement of the intermittently operated
platen type of press.
’
Having thus outlined the general features of
my improved method and machine, and the
55 nature of the belting produced thereby, I will now
describe the several parts of the machine in
greater detail.
The machine as shown in Figs. 5 and 8, and
also in Fig. 4, comprises a frame including pairs
of horizontal rails 4|, 42, and 43, supported on
Vertical standards 44, 45, 46, and 41. As shown
in Fig. 4, the rails 43 receive open bearing blocks
48, which are adapted to receive the spindle 49
of the spool H for the ply l2, and the spool 29
65 for the ply 3| when the machine is, operated
according to the plan of Fig. 2. The machine is
adapted to receive one or more reels or spools of
belting on each of its spindles 49, and plies of
various widths, and in order to retain the plies
70 in proper aligned relation while progressing
through the machine, provision is made for ad
justable guide members.
As best shown in Figs. 4 and 5, these guides
comprise tubes 5| secured to blocks 52 which in
75 turn are adjustably mounted on transverse rods
The ply
3| (or H, as the case may be) passes about the
guide roll 24 (see Fig. 5) and then about a pilot 30
or different amounts, for, while this could be
done, the preservation of that tension beyond the
feed rolls l4 would require placing the receiving
reel 33 under positive force. It has been dis
35 covered that, if the newly ?nished belt is wound
45 on the reel 33.
'
The cementing unit [3 includes a pair of pilot
rolls 63 mounted between bearing blocks 64 dis
posed on the standards 46, which direct the ply 25
l2 from its'spool I I, past the adjacent guide nuts
distance from the press.
It is not intended that the reels H and 29
should be supplied with brakes or drags to impart
30 a substantial tension to the plies, either in equal
around the receiving reel. Hence, in making a
belt in which one of the plies is pre-stretched, I
advise the plan set forth in Fig. 1, and, in using
the plan of Fig. 2, I prefer to push the belting into
the press 16 by means of the feed rolls l4, rather
than pull it through by applying a positive force
These guides are mounted on
plates 56 and 51, extending transversely between
however, is mounted adjacent the reel II, to
. damage to the product, due to the accumulating
pressure or pull in the successive wraps of belting
3
53 secured in brackets 54 disposed on the rails 43.
>
35
The applicator rolls 65 and 69, and the posi
tioning rolls 66 and ‘H, are all mounted through
their trunnions transversely of the rails 42 in ,
similar bearings 12 which are respectively located
on the lower and upper sides of such rails.
Dis
posed below the horizontally aligned applicator
40
rolls 65 and 69 is a pan or tank 13 (Figs. 5, 6,
and 7) which is adapted to receive a suitable
quantity of liquid cement in which, during oper
ation, the applicator rolls are partially immersed. 45
Any suitable means may be provided to maintain
a substantially constant level of liquid in the
tank during operation, such, for example,.as the
parallel adjustable supports 14 and 15, which are
secured at one common extremity to depending
brackets ‘I6 secured to the tank 13, and which
are pivoted to the standards 46 at the opposite
ends.
Means are provided to adjust the thickness of
the ?lm of cement built up on the applicator rolls 55
during their rotation in the liquid bath, compris
ing doctor blades 18 which extend across the
faces of the rolls, and doctor blades 19 which ex- .
tend along the sides of the rolls, and arevalso
secured to the blades 18.
Each blade 18‘ is se
cured to'an adjustable frame 8! provided with
hearing portions 82 (Fig. 7) which receive thread
60
ed studs 83 secured to blocks 84 locatedon the
rail 42. Adjusting nuts 85 are disposed on op
posite sides of the bearing portions 82, and they 65
are accessible for manual operation to space the
frames 8! and accompanying blades 18 with re
spect to the rolls to such extent as is desired.
The side blades 19, which are secured to the
blades 18, contact the sides of the applicator rolls 70
closely at all times, thereby preventing the film
of cement from creeping up and over the sides
of the belt plies.
As will be hereinafter more fully explained,
means are provided, to drive the applicator rolls,
21155-476
~65 and 69'3‘in' 'ia'i'directi'on'iwhiéh; at theip'oint vof
sure'developed: When the stern I=05j is in‘ the
‘position, ‘the ?uid pressure ‘is’ re!
contact',1is opposite to?the direction oiT-movement inoperative
versed,
thereby.
:permitting‘the ‘platen I02 to, re
fo'fiithe plies.‘ iltjwillithusbeiunderstood-that as
from ‘the plate EIOI to such distance as ‘may;
"the-plies ‘move; overthe applicator rrolls,‘ these ‘ rcede
required. ' As hereinafter described, the stem
,iroll's revolve‘ "against Ethe,-"plies,:ian'd ‘thereby ap-, be
I115‘ is Lautomaticallyoperated through" suitable V
ply, and‘thorou‘ghlyribrush in‘ and coat one surface‘
of each'ply with "a layer of ‘cement ‘of'the desired
‘thickness,
"
r
.7
»
'
Jpositio'ning rolls 66 ‘and TI ?are so'posi
c-ti'on‘e‘d :abovethe applicatorrr'olls, and with ' respect
_
. '7
controlsv to provide intermittent operation.
:' Referring now‘to'Figs. 5, '8, and 9, the drive’for '
the powerrroperated'rolls, which is dperated‘in
‘intermittent ‘timed relation with the operation .of 110
the'pre'ss I6, is taken from a motor I-IIwhich 7
‘to each other,‘ ‘as, to’ bring the two plies together, drives
Va‘sprocket ‘I I2 through'a variable" speed re- ' '
vwith‘ their‘ coated surfaces in mutual contact, on,
H3, Power is". transmitted 'from
I gtheaupperlp'art‘of roll‘lIn _It is advantageous to ducingiunit'
sprocket II2‘ through "a chain H4, to a driven
s ' :bring the plies itogetherin this fashion, ‘as soon ,
sprocket II 5, which is' keyed'to ‘a counter'shaftf‘
‘1'5 asv possible‘ after the. application» of the cement,
H6 mounted in bearings 'I'I'I secured to ‘the
‘since; ,particularly'with a quick’ drying cement of
standards “It A' clutch member H8 is keyed to
the shaft 1 IIisandis slidable therealong for en‘
l1 *Affterlleaving theicementing‘unit "I 3,, the :united , gagement with 'a cooperating clutch member 'I I9
the-waterproof type,1 amore adhesive union will
*be‘ obtained.
'
'
'
'
"
l‘or ‘contacted plies are directed past the adjacent
guides‘ 6| between idler rolls " 8'1 ‘and'88.
The
‘ which is rotatably mountedon'the shaft. ' The
‘member I I8 "may be operated through'a bell V‘ '
lower roll 81 is mountedibetween bearings, such vcrank ‘L21 to effect the engagement or disengage;
Ll'as'fthebearings ‘I2,'secured to the rails'42, and
the upper'roll '88 is' mountediyrbe'tween "bearing
‘blocks 89 which are" vertically ‘disposed in stand
ment ‘of the clutch.
The idler'clutch elementl I9‘ "
carries a’ sprocket I22 which, through a chain
;/I~23,"operates a sprocket‘ I24 secured to a shaft
52.5 '
~iardsf9I ‘secured to ‘the rails ML The blocks 89' 125, mounted in bearings "I26 disposed-on the
45. I25; directly drives the lower "roll of’
are vertically ' adjustable by’ means of screws 92 standards
The shaft
.to' permit of displacement of vthe ‘roll'88 from the
' Ffcbnjoined plies» during setting-up operations or the twofeed rolls 14 through sprockets I211 and
"I28‘respective1y secured ‘to the shaft I25 and to “7
'30 *adjustmentfor V'contact with’ belts of different the trunnion I29 (Fig. 9) of the lower feed roll,
' thicknesses. “The rolls B‘I‘and 88 are intercon
Vinected by. gears‘93 .'(see Fig; 41) “so that'the'y gand a ‘connecting chain I3I. 'For purposes of
always operate in 'unisonand ‘at the samespeed. ‘clarity: inlfurther ‘description, this lower "feed '
V
It will be observed thatjthe plates56 and 51 ' roll, when speci?cally referred to, will be "desig
nated by the reference number
form'ra ?at table between the {rails 4| which-may 'mounted
7 on the trunnion I29 is a sprocket/I33
J32; "Also
receive the-‘contacting plies during movement
,WhiCh'lS connected to a1 similar sprocket 134
: shown in Figs. Land 2. As the feed rolls l4 are, ‘secured to vthe trunnion‘ I375‘ of the positioning 7
similarin construction to the rolls 81 and‘ 8B, and roll’TI'ib'y a chain'I36; The’ trunnion I35 also
Tcarriesa second ~Vsprocket, [31 over which passes "
v40 are similarly mounted on ‘the 'frame,‘ further 'de- '
vvscript‘ion'of these details need "notjbe made‘, It ‘a chain I38 that also extends about ‘a sprocket
may ‘be noted, however; that these rolls arelike- ' ‘I39 vmounted on‘ the ‘trunnion-MI of the applica
tor roll 69; a positioning. sprocket I 472; and‘ in
e ' wise'geared togethenas' indicated by the refer
Lence number 94, and‘further', are positively driven contact with ‘a sprocket I43secured to the trun 45
from a 'sourceof power, as hereinafter morejifully nion I44 of the positioning roll'66. The applica-i
, described. " The purpose of providing a" driving, tor roll 65 is driven from the roll'???byrme'ans
' j connection for thelfeed rolls vI4 is to pull the belt
"o'f sprockets ‘I45 arid I46, respectively secured to '
ing-plies through the coating bath under such itrunnion ‘I44 and the trunnion l'II'I'of the roll'65, '
Ete'nsion or absence of tension as'mig'ht be desired, and connected'by a chain I48.‘ It'will thus‘be to
‘according to the principles hereinabove set forth, seen'thaaas power is applied through the clutch
and to forward the contacting pliesto the press V 'connection'the feed rolls I4 are positively driven, ~
and also the applicator and positioning rolls of
'll?jwhich is iloca't‘ed'just. beyond ther'feed rolls.
' With certain types of’ belting it’ is advantageous I the cementing, unit.
' T,tor‘dispose between the idler rolls ‘Y8'! and 88 and ' " The direction of?rrota'tion of all of these rolls is (155
indicated in the drawings by the arrows, and _it
the drive rolls I4 a plurality of'light pressure rolls
*95iwhich 'are' mounted in suitable adjustable will be observed that the driving connections are
bearings located in'arectilinear' frame 96 posi-V ,‘such as’ to rotate the applicator rolls B5'and ‘69 t
againstthe direction OfmOVeiIlBl'ltDf the plies at
'tioned above'the plates156. 'The'frame 95 is con
"nected through links I 91‘ to the standards "SI, 7' the points of contact‘, while the positively driven "60
whereby the frame'and accompanyin'girolls'may positioning rolls 6‘6 and ‘II .aredriven'in the dij-Iv
be'move'd' to an inoperative position if their emf rection of movement, of‘ the plies, whereby what~ Y '
ever drag may be imposed by the reverse move- '
ployment is not desired" Thejlight pressure ap
"Tplied by’ the idler rolls 95 is frequently 'advan- I ment' of the applicator,‘ rolls is offset by the. assist
tageous to prevent therplies ‘from separating as , lance .given ,by'the' positioning ‘T0115.’ .Byathis 165
they pass ‘between 'the'rolls 781;’88; and ‘I4.
' ,means,;there-is nordang'er of'increasingvor mate- ‘
j The press LIBV‘is ofthe'wellknown type‘ having ' rially modifying the-tensionrcondition desired in
‘a bed plate ID‘VI "(-Figsfl and 9) and a'platen I02 the 'plies during their movement through the ‘
lwhich'i's operated by a hydraulic rarn' I03. Such ~cementing‘unitl QIt-will- also beobserved thatthe '
presses are controlled bya'valvel?l, thejste'rn -~ feed rolls are bothrpositively drivenin'th'e'desired
Q1115, of which: is' movable from' an operative, or
pressure‘applyingposition, to- ‘an inoperative, or
’
' pressure
releasing‘ position. when the stem I115
is in the operative'position, ?uid pressure closes
‘direction of" movement toward the _lpressfI6,. so
that the tension conditions of the ' plies' fisgynot
; (‘changed-during such, movement, and the *feed
rolls in' fact v‘push the‘contacted’plies into the
J ' the*-press',tan'automaticcut-off '(notrshown‘) being , :press,
thus avoiding anyf'n'ece'ssity' ofdrawingatheg'w
>customarilylprovidedtoilimit the amount of press
2,119,476
belting under the platens while in a state of in
creased tension.
W'hile it will be obvious that the operation of
the press control valve I04 and the clutch oper
ating bell crank I2I may be manually e?ected,
it is intended to operate these members in auto
matic fashion, and in sequential order. For this
purpose, a control unit, generally designated by
the reference numeral I5I, is provided for oper
ation from the countershaft II6, which, as above
described, is continuously operable through the
motor III. A sprocket I52 is secured to the end
of the countershaft I I6, and, through a chain I53,
operates a control drive sprocket I54. This last
15 named sprocket is secured to a shaft I55 extend
ing into the unit I5I~where it receives a sprocket
I56. Other sprockets, I51, I58, I59, and I6I, are
mounted within the unit I 5I , and over all of them
extends a chain I62 of substantial length. A con
20 trol ?nger I63, which projects slightly from the
chain, is secured thereto for operation of a num
ber of electrical controls.
‘
A bar I64 is mounted in the unit I5I in parallel
relation and adjacent to the length of chain ex
25 tending between the sprockets I56 and I51. This
bar receives a number of lineally adjustable
clamps I65, on each of which is pivoted and se
cured a control switch. It will be understood that
the control chain I62 may thus be continuously
driven, and the ?nger I63 will, during itsmove
ment, successively contact the various, switches.
Fig. 9 also shows in symbolic manner the con
trol circuits for the operation of the feed rolls and
press. The four switches, I1I, I12, I13, and I14
35 mounted on the bar I64 are advantageously of
the mercury-in-bulb type, through which an elec
tric circuit may be made when the bulb is in a
horizontal position, but broken when the bulb is
tilted to permit the mercury to run to one end,
and away from one of the switch points which
extends through the bulb. These switches may
be biased by springs or counterpoises to either the
horizontal or closed position, or a tilted or open
position, and, in the present case, switches I1I
.\ and I13 are normally closed, while switches I 12
and I14 are normally open, and they assume re
spectively open and closed positions only when,
and so long as, they are moved from their biased
positions by contact with the control ?nger I63.
As this type of switch is a well-known article of
commerce, it is deemed unnecessary to illustrate
or describe its structure and mode of operation in
further detail.
.
Switches HI and I14 are employed in the cir
cuits which control the operation of the press I'6,
while switches I 12 and I 13 are connected in the
control circuits for operating the clutch actu
ating crank I2I.
The circuits through the switches I12 and I13
60 for the control of the clutch actuator. I2I may be
described in conjunction with their associated
parts as follows: From one side I8I of amain
electric line current flows via a branch wire I82
to one end of the coil of a relay I83, and passes
through the coil to one contact of normally open
switch I12 through wire I84. A wire I85, con
nected to the opposite contact of switch I12, icon
nects to a wire I86, which in turn leads through
wire I81 to the other side I88 of the main line.
This circuit, which may be called the pick-up
circuit, transmits current through the coil of relay
I83, thus energizing it and permitting it to pick up
its three armatures I89, I9I, and I92. As soon as
the ?nger I63 passes switch I12, however, the
75 switch opens, and it will therefore be apparent
5
that the circuit just'traced will also be, opened,
permitting the relay to be deenergized and the
aramtures to drop.
,
'
To avoid this deenergization, a stick circuit is
therefore provided to maintain relay I 83 ener
gized. This circuit may be traced as follows:
From main line I8I, current ?ows via wire I82,
coil I83, and wire I84 as before, to a wire I93 con
nected between wire I84 and one side of switch
I13, through normally closed switch I13 to wire 10
I94 which is connected to the contact point of
armature I92. The opposite side of armature I92
is in turn connected to wire I 81, which leads to
main line wire I88. Since armature I92 is picked
up by relay I 83 upon the closing of switch I12, 15
and since this energization is maintained through
the circuit containing normally closed switch I13
even ‘though switch I12 may be open, it follows
that the relay will not be deenergized until switch
I13 is opened.
20
After the ?nger I63 passes switch I12, to close
the same momentarily toenergize the pick-up
and stick circuits just described, it moves to
switch I13, and, in passing this switch, causes it
to open. The stick circuit is thereby broken, 25
and since there is no longer any energizing cir
cuit for the relay I83, the three armatures drop,
and the stick circuit remains broken at arma
ture I92, even after switch I13 is restored to its
normally closed position.
-
30
During the time that ?nger I63 moves between
switches I12 and I13, the clutch thrustor or oper
ating solenoid I95 is energized by current ?ow
ing through the following circuit: From wires I 8|
and I82 to armature I89, through the contact 35
point of the armature via wire I96 to one end of
the coil of thrustor I95, through the coil to wire
I91 which is connected to contact point of arma
ture I9I, and through wire I81, which is con
nected to this armature, to main line wire I88. 40
Energization of the coil of the thrustor moves its
movable element I98, which is mechanically con- ,
nected to the bell crank I2I in such fashion as to
cause the engagement of the clutch members -I I8
and H9, thereby driving the feed rolls I4 and the 45
rolls of the cementing unit I3 to forward and‘coat
a length of belting.
During the time required for ‘
the ?nger I63 to move with the chain I62 from
switch I13 to I12, the above described circuitsare
all open, the bell crank I2I is retracted to discon 50
nect the clutch members II8 and H9, and hence
there is no movement of the feeding and cement
ing rolls during this period.
The length and speed of the chain I62, and the
relative positions of the’ switches, are so ad 55
justed as to open the press I6 while the clutch is
engaged, and-to close the press while the clutch
is disengaged. The press control is quite simi
lar to the clutch control, as far as the circuits are
concerned, and it is therefore deemed unneces 60
sary to repeat in detail all of the elements of the
circuits. Switch "I is a normally closed switch,
to release the press valve I04, while switch I14
is a normally open switch to close the press valve.
Accordingly, the stick circuit for relay 20I is 65
taken through switch I1I, while the pick-up cir-
cuit for the same relay is taken through switch
I14. The circuit for the electro-pneumatic valve
202 is established through the armatures 203 and
204, which are respectively connected to each of 70
the main line wires I8I and I88.
The sequence of operations may be traced by
considering the movement of the chain I62 and
attached ?nger I63. In the position shown in
Fig. , 9, ?nger‘ I63 is between switches HI and 75
-
7
$119,476
"
7
itlié'f-limitedtensioning‘ rfnéthodidescribed
[12,‘ and hence ‘seams 1-1 I' and Tngn‘are jbio‘sed; ' time
in connection with Fig. 1,‘or;the’Juntensionéd
while; switches iii 12 r and" ' I T4‘; are' rope
‘ since
switch‘ I'H_ has justubeen momentarily opened;
the ‘stick circuit for‘- reiayizul has‘just been opened, 7 r
method j-delsicribed' in'lcoiinectionfwith Fig. 13; T By
eliminating; the ir'iecessity‘liontensioning'v the
unduly‘lduring the” assembly lope'rations; it is
and armaturesz?tl," 20K, and 205‘are ‘down, thu'sl plies
possible to preserve‘ to the belting all‘ of' the ' de
opening the "circuit- for‘ the 'electroép'neumatic
valve ‘202, Ta?d'also the stick; circuit‘ itself. " With
valve ‘202' deener'gized, thus bleeding‘ valve "I04,
hydraulic pressure is released from'press f6,- and
the press therefore begins'to open. i
‘
"
sir'able "properties which ‘ heretofore ‘ have only
been obtainable by laboriousiand'expensive ‘hand
' methods-l L It'will beinoted that,iin providing ~ior -
y >
‘Tli'é'clutch l'l8-'-ff l9 also disengaged} since its
holding‘rc‘ircuit‘ was broken through switch1ll3
during the‘prior operation‘thereof by the ?nger
’ I631" 'Hencepi?‘thje interval’ of time ‘required for
?nger7l6'3 tormdv'eifromiswitch I'll to switch‘l'l2,‘
the rolls ‘M’ are‘ not driven; and the press 16 is’
beginning toreIea‘seJI It is to be assumed ‘that as
the ?nger contactsswitchl 12, press IB‘has opened
suf?ci'en'tlyito permitlthe‘movement _of the'belting
As the ?nger strikes switch" I'IZfithe’piclK-up
between the platens IUI and'l02 thereof. , i "
' circuit for relay’ (831' is'lestablished, the relay is g
energized; thereby establishing its 'o'wnistick cire
' cuiti-through switch "3' to‘ maintain the circuit
throughfthrustbr ‘I 95; ‘thus’ causingi'the engage;
ment of ‘thefclutch. ‘The'rolls 1'4 'andfcement'ing ‘
unit‘ 13 ' are now driven; thereby coating; contact;
iIig, ‘and forwarding a" new section fof'belt'to the
the limited‘ténsioning oi one lply onlyg these’ifeai
tures areljalso‘preservedto such extent as is'ldei
sired.'_
"
'
'
By usingitliehereiriidescribed‘intermittent ‘aria
synchronized method'hf operatiomiit is not'on'ly
possible to make belting“ rapidly and‘ without in'-: 15
troduciiig' undue tensioigfbut it 'i's"also‘pos‘sip_le
to- feed ire'shly vcemented length's'jof' belting‘ to
the press witl'i'theeliminationioftime ldelays-durl
mfg which thecement;couldfpartially‘ drmqrime
plies curl; separate; or béconie'_displacediffl‘hése’
20',
advantages" will "be “especially ' appréeiatea “by
those familiar with the use 'of waterproof cement,
which,‘ by >virtu " ' of its"naturé; Ih’as'i'been‘ ‘found
ratherTrdi-?icult'tofharidle. 'il' T
i”:
‘i
' It ispot intendédfthatlthe inventionfb'e'r‘e‘i
gardedas limited tojtheg precise ‘details herein
set forth‘by'mway' oi} illustration of its principles,
but tha?the" invention} should'laei regarded
l'
'
' press l'?gandimovi'ng' the Section ‘which was‘. inthe 7 _ commensurate'with thet'scope "of the‘ ‘following 30V
press out of theizone'of-‘actioni Switch I13 is so
7 rotated with're'spéot tO' tlie'po's'ition Of‘sWitchIT'IZ,
. length" of belting is ‘forwarded by the rolls “by:
the'time the ?nger I63‘ strikes'switch 113. '
Upon the operation 'of normally clos'ed's'witch
113“, ‘the stick' circuit‘ for relay “33- is ‘broken;
thrustorT'valve7l95 is'deener'gized with the drop;
ping of iarinatur'es‘ Hi9 ‘an'df'li9 I," and the" clutch is
thereupon " ' disengaged; thus iistopping , ‘ further
movement 'of‘th'e" cementer ‘and rolls ‘ 1'4. " 'No'fur;
ther engagement of th'e'fclutch is 'e?ectedfuntil the’
V .?nger l63'a‘gain reache's'switch'l?. ‘ Immediately
' after opening switch" [13, however, the’?n'ger‘IGSi
contacts 'normally'opeii' switch I14 lto'clo'se the
WI claimf77>w
A V
-; ‘1. a belt making‘maemnecomp?emg‘suppdie ;
iii'g‘rneahslforkeach'of twp separate beltfpliesf'a‘ '
cementing unit adaptedftdapply‘cement to' the
face 01513551‘ each ply; meai'is' f_o1{bri'ngi'ng"th_e
cementedffacésfint‘o mutual contact, rolleri means
for: pulling the; plies through ‘the: cementing unit ; '
and "forwardihgmtl'iéi'contacting pliesto a; point
beyond said roller, means; a‘pl'aten press disposed 40
beyond ‘said’roller means’ to receive said Contact;
ingpliesfa‘nd means for intermittently applying
pressure through‘ said press ‘and operating‘ said
rbuérfmeaas'as sequemmi operations. ' 7 f'u
, 2.
~belt making machine" comprifs'ijng, ‘a
cementing ‘unit, means in Tsaidfce'niéntir'ig' unitg'for
applying cement toTones'uLrfaceof ‘eacn'qr ajp’aii‘
1 > switch\ ‘I 1 I .' A Electro-pneumatic valve 202‘ ' of’ sesame belt'plies, power driyehrollérf means
through
it"o niave j's'amjpues
is ‘thus energized'ito‘ apply pressure to the platens‘ adiacentrsaid c emeiritinéj
of‘ press I6, which'thereup'on close andcontin'ue‘ through said unit'and tb :aiweid' said‘pliés after
same,'thus festablishin'githe pick-upcircuit for
45
relay 20F, and thereby its 'stick circuit "taken:
59
to‘ apply ‘pressure to‘ the newly inserted‘len'gth of ‘
belting 'until the ?nger vlj63lstrikes'c1os'ed‘ 's’witch
' I 'l l‘, 'therebyfreleasingTthe'pressure and terminate’ -
V > ing the complete ‘cycle-of operation.‘
'7 contact'lto'r a} point the'rebeyondé'i pressure ‘apply-f
‘one_ leans, adapted toapplyrbresslireio'éaidiqbri
tacting plies 'aiterpassagethrough said roller
means; intermittent drive ,meansfor _m'ovin'gisaidi '
‘(It will thus be gamma‘ ‘pans 'are'providedto pliesceinenting means and fsiaiid'roll;
carry out ‘the "method of ' making ‘the ' belt which‘
7
56v
ermeans’?meansfer’intermiipeiitlvo'abtiietiiie arid
55
involves the steps “of bringing the plies together" releasingseid Pressure applying meansla'nd' con:
iwith, cementon‘their contacting faces and for'-' 'trol imeans associated with said. intennit?tent
wardingthe freshly‘ cemented section to the press; means__ for. operating‘sa/id driye means, when said
while: the press is openfahd withholding‘ifurthef pressure applying means is released .andoforsdise.
connecting said'drive means‘ when saidpressure
60 material 'lfrOm'the press 'while' the press'i‘s' closed;
These'sequential operations are synchronized with applying means is actuated. or .
r
' each‘other‘soithat the‘ belting may’ move through . :3‘ A; belt). making. ‘machinei'lébhiririsirieifa‘ '
' ‘the c'ementing'u'nit as ‘rapidly’a's the pré's'si'canl
cementing’ unit including tworpairs of rolls, apair '
receive“ its ‘ On’ the? r other ‘hand; "the cement “is rorfmfeedirolls disposednonnthe emergent side of 7 65
65 not applied’ to'the plies while'the press is ‘eased, said unit, means for positively driving said ‘feed
to moyebelt plies. through said unit, means
and hence'thendi?'lcultiies which‘ would be» en rolls
countered'fif 'the‘ipliesr were contacted'andithen' for positively driving said two/pairs .of rolls, ‘said:
lastgnemesimeans beingisq disposed as to'ldrive.
made; to‘ wait ,for pr'essurelarel obviated. '
From the‘foregoing description, f itiwilli» be'fun-i the rolls or each oflsaid pairsingthepsamerrota- ‘ :ders't'ood by‘ those/‘skilled
the art‘ that‘i'have tionalv direction,_ and :means disposed adjacent
provided an improved ‘method‘randniachine‘ for thesieedrolls tolapply pressureto plies passing
making belting," and '-have also- produced ‘ afn‘e'w through/said pairs of 'rolls insaid cementing unit;
and usefuliriulti-ply leather belt[ ‘It 0 will be ’ ,4, Inabelt making‘machine, ‘the combination
fprenplying pressure tecpntacting'
observed ~thatwthe machine herein described is wiihmeees
so“ made as to’ admit of ‘the ready“practice"ofv and cemented belt plies of meansv for‘applying
2,119,476
cement to the faces of each of a pair of plies,
said cement applying means comprising two pairs
of power driven rolls, a cement tank disposed
below said rolls, one of each pair of said rolls be
ing so spaced with respect to said tank as to re
7
engagement of said clutch and the closing and
opening of said press.
9. A belt making machine comprising a ce
menting unit including a tank adapted to receive
cement, applicator rolls disposed above said tank
ceive thereon a coating of cement adapted to be
placed in said tank, the other roll of each pair for partial submersion in the contents thereof,
positioning rolls disposed above said applicator
being disposed above said tank, means for insert
ing a belt ply between the rolls of each pair for rolls, means for positively driving all of said rolls
10 movement therebetween, and means for driving to apply cement to the surface of each of a pair
of belt plies passing between said applicator rolls 10
said lower rolls of each pair in the same rota
and adjacent positioning'rolls and to move said
tional direction as the upper rolls of the pair, the
said upper rolls being driven in the same direc— plies through said unit, doctor blades mounted
adjacent said applicator rolls to control the quan
tion as the direction of movement of the plies,
whereby said upper rolls will forward the plies tity of cement applied by said applicator rolls,
through the tank and the lower rolls will apply pilot rolls mounted adjacent the applicator rolls
to direct said plies between said rolls, means
cement to the faces thereof against the normal disposed
adjacent said unit and on the emergent
directional movement of the plies.
thereof to contact the cemented surfaces
5. In a belt making machine, a press adapted side
of the plies, feed rolls disposed adjacent said unit
to receive contacting and cemented plies of belt
to
effect the movement of the plies therethrough, 20
ing, means for feeding said plies to said press, and
means for applying cement to the faces of said
plies prior to transmittal to said press, said last
named means including a tank adapted to receive
cement, two pairs of spaced rolls disposed above
said tank, the lower roll of 'each pair being adapt
ed to dip into cement contained in said tank,
means for driving the upper rolls of each pair in
such direction as to move the plies disposed be
tween said rolls toward said press, and means for
driving the lower rolls of each pair in the same
rotational direction as the upper rolls, whereby
said lower rolls may force cement into said plies
against the movement of the plies through said
pairs of rolls.
6. In a belt making machine, in combination,
means for applying pressure to a pair of con
tacting belt plies, means for moving said plies
towards said pressure means, means for bringing
40 said plies into surface contact as said plies are so
moved, and means for applying cement to one
surface of each of said plies just prior to con
tacting the same, said cement applying means
comprising power driven rolls adapted to contact
45 the surfaces of said plies and to move in a counter
direction with respect to said plies at said point
of contact, and means for applying cement to said
power driven rolls at a point spaced from said
point of contact.
50
7. A belt making machine comprising means
for bringing together into surface contact a pair
of belt plies, means for cementing the contacting
surfaces of said plies prior to mutual contact, a
press, means for transmitting said contacting
55 plies to said press, means for driving said trans
mitting means, means for opening and closing
said press, and means for operating the opening
means for said press, the driving means, for dis
connecting the driving means and for operating
60 the closing means for said press as sequential
operations.
8. A belt making machine comprising a ce
menting unit adapted to apply cement between
a pair of belt plies, means for feeding contacting
65 plies to a press, a press adapted to receive said
contacting plies for application of pressure there
to, a power drive for said feeding means, a clutch
disposed in said drive, a continuously operated
control drive, a control ?nger on said control
70 drive, and a plurality of controls disposed ad
jacent said control drive and adapted to be suc
cessively operated by said ?nger, said controls
respectively effecting the engagement and dis
and press means disposed adjacent the feed rolls
to apply pressure to the contacting plies passing
through the feed rolls.
,
10. In a belt making machine, a cementing unit
adapted to apply cement between a pair of belt -
plies, said unit including an applicator roll and
a positioning roll disposed adjacent said applica
tor roll, means for driving said rolls, a pair of
feed rolls adapted to move said belt plies through
said unit, said feed rolls being interconnected 30
for concurrent driving, a press adapted to com
pact said plies together, driving means for said
rolls including a pair of clutch members, operat
ing means for said press, and driving means
adapted to effect the engagement and disengage 36
ment of said clutch members and the operation
of said press.
11. In a belt making machine, a pair of feed
rolls, a driving connection between said rolls
whereby they may be driven in unison, a source
of power, a second driving connection between 40
said source of power and said driving connection
for said rolls, said second driving connection in
cluding a clutch, means for effecting the engage
ment or disengagement of the clutch, a power
operated press, a timing drive, means connecting 45
said timing drive to said source of power for con
tinuous operation, a control ?nger on said timing
drive, a plurality of electric switches disposed ad
jacent said timing drive for momentary operation
by said ?nger, an electro-magnetic control for
said clutch actuating means, an electro-magnetic
control for said press, and electric circuits extend
ing through said switches adapted upon the mo
mentary operation thereof to energize and deen
ergize said electro-magnetic controls in such se
quence as to eifect the engagement and disen
gagement of the clutch and the closing and open
ing of said press.
12. A machine for making a multi-ply belt
comprising means for supporting a pair of belt
plies in spaced relation, means for moving said
plies in unison to a common point of contact,
means adjacent said common point for apply
ing cement to a surface of each of said spaced I
plies, a press, means for'intermittently operating
said press, means for moving contacted belt plies
from said point of contact to said press, and
means for operating said last named moving
means intermittently and in timed relation with
70
said press operating means.
JAMES A. WEBB.
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