Deseret evening news. [volume] (Great Salt Lake City [Utah]) 1867-1920, 1896-11-07
REDUCING RUBBER.
HOW ARTICLES or USE ARE MADE
FROM THIS VALUABLE PRODUCT.

tion Of How nuibs For syrinres and
Atonissr. Are Made.
Rubber u one of the most staple and
useful articles IN modern usc. Thorc arr
but lew unrs to which tho wonderful
product cannot b. put IL can be made
AZ pliablo NJ putty or ~ hard as wood,
and Is Just ~ adapted for use as a hair.
PIN as for golf ball or waterproof
Jacket Fow people, however. are a. "a.
miliar with tho process Of manufacture
~ with tho product itself
The larger part Of our rubber goods
comes from Brazil. which il the great
est rubber producing country IN the
world. Here, II course. rubber workers
handle their elastic material with an
ense and cc'prity which IL a revelation
to the man \, no has wasted tho greater
part u forenoon trying to mend a holo
IN his pnnctufcd tire. Although tho
larger part Of rubber manufacturing Is
done by machinery tlitrc ssiill ccnsid
crnbio done by hand. In making up
goods fer druggists, stationcrs and sur.
gical supplies the bcst grades Of Para
ubbor. tho best in tho world. are gen.
orally USED.
The ordinary commercial rubber Is
gray. but its coloTing is an easy matter.
THIS Is done by mechanically mixing
with the rubber, after II u washed and
dried, different kinds II pigmcnts-ox.
ide ~ yinc for white. lampblack Tor
black. golden sulphurot Of aniimony for
yellow and vcrmiiion for rcd The rub.
Der mixed with the pigment is run
through heavy steam heated rollers into
thin shots.
The making ~ rubber bands IL n sim.
pie proves Thin shoots Of pure gum
arc wrapped around form until u is
shaped into Hat tube n the required
thickness This tube Is then vuloanizcd.
whcn IL Is shipped on the form and run
through u machine which cuts u oross.
wise into strips.
Rubber vfnsors contain finely pow.
dorcd pumioc stone or emery dust The
abrasive materials are mixed with the
rubber mechanically. which il then
nodded into shapo and vuloanizcd IN.
der steam heat
One Of the most interesting processes
ia tho manufacture oi rubber goods IL
that Of bulbs Long bulbs. such ~ syr.
ingss and atomizors. Ar" made from two
pieces Of rubber. but round bulbs, such
~ pumps aud balls Rc madu from
three pieces For cutting tho rubber
Eino or galvanized iron patterns nrc
used. Considerable care Is necessary
IN this. ~ the strength Of tho scam de.
p.nds upon tho smooth fitting Of tho
edges. Tho three parts for hollow balls
may. borrower. DO cut with die. II tho
bulb has neck. small pegs of iron arc
trst prepared by being ccmcnted aud
wound with strips Of rubber as nu.
clsus
After tho rubber Is cut into the proper
parts IL u then brushed with cement the
whole lcngth Of tho skiycd edges and
thoroughly heated. Tho bulhmakcr then
takes the softened rubber. and TAX
ing u prepared pcg places the neck
on ono piece ON one side of tho rubber
corr and another neck piece On tho OPP
posite side, then presses them tirml-' to-
gother. and. rolling the whole .ubc
shaped piece between thumb aud FORE
finger. has finished the neck II tho bulb.
The next process u that Of knitting the
edges which form tho scam. This 1,
done by holding the finished neck 90.
ward the operator In his left hand.
while with the thumb and fort finger Of
the right he pinohes the edges firmly
together for nearly the whole distance
Arc1nd. Into the side aporiurp, which
IN " Z open. Is poured little water OF
liquid ammonia Tho opening Is then
made still smaller. and as u final touch
the maker puts his lips TO tho oriiico and
blows full and hard into the bulb. Tn,
softoned rubber under this pressure ex
pands, tho fiatton'd shape IL lost in
fuller and more rounded outline. whit
the operator, with a quick nip II hil
tooth, closes the op,ning, the imprisonct
air and water holding the sides apart II
symmetrical corpuloncy.
The partly matte bulb IL now pasge,
on to the turner's, who, armed with sois
sors with curved blades. carefully circl
the SEAMS. cutting away all uneycnness
till the whole exterior IN ready for tn
mold.
Tho bulbs, Ms soon ns they leave tn
trimmers' hands, are laid in shallow
pans filled with chalk when takci
from here. they nfo carefully dustcl
with tale. 80 that the rubber will no
sdhero 10 the inside Of tho mold.
mold worker then takes one half Of ia
mod in his left hand and with his RICH
gently forces bulb INTO 1t. Gaping
with the second half Each bulb, " th
pattern worker ia shillfnl. will 1T II
mold; otherwise tho finished bulb Is az
20 b. imperfect.
Tho mold- are run upon small track
into the yuloani2er. After they hay
been cured u sufficient time the yulcat
izors are openod and the cans arc ru
under an Ordinary shower bath. whic
quickly cuols them. They are then NJ
keyed, the MOI twisted opon and III
bulbs taken out. II tho work be- we
done, the swelling Of the liquid with
its rubber prison has oxerted 30 inten,
force that every line and letter With
the mold is reproduced up, the outsid
Of tho bulb. while the sulphur, combiI
ing with the heat, Icoomplishcs N
inflammation.
The final process takes place In III
cylinder room. where in slowly reyol'
ing tumbling barrels the bulb undergo,
thorough securing, when taken OF
Of the cylindors, the dirty yellow cole
IL. - a