The Richmond palladium and sun-telegram. [volume] (Richmond, Ind.) 1907-1939, 1908-07-13
A THIMBLE OF GOLD
1T is MADE or METAL ALLOWED DOWN
TO FOURTEEN cARATS.
The Process of Manufacture. From
the InEots of Pure Gold Fresh From
the subtreasury to the Finished
Shining Product.

the Ingots of Pure Gold Fresh From
Shining Product.
Out of whatever part of the earth il
may originally have been dug. the gold
from which thimbles are made in Phil
adelphia was bought ut The United
States subtreasury in the cary in to
form OF snug little ingots. br'tb shape
and about two and Il half tpch .s long.
an inch and a quarter wide aud about
an inch thick.
These little ingots would be of a con
venieut size for paperweights. But
they would be rather heavy for such
use and probably too expensive for
most people, for each one contains, OF
pure gold, "A carats fine, metal of the
value of about 5000.
Gold of this fneness would be much
too soft for thimbles, and it is alleged
down to II carats, in which condi-
ton il Is rolled into sheets of suitable
thickness. In the first process of man.
ufacture a sheet OF this gold is run
into a machine which cuts out OF II
disk in size sufficient TO form Thin
BILE, the same machine stamping this
disk also into the form of straight
sided capsule with irregular edges.
Then the thimble blank goes into an
other machine, in which a die stamps II
into its conical shape. Out of this ma
chine it goes into an annealing fur
mace for tempering and from that into
an acid bath for cleaning and the re-
moval of the fire coating.
Then the thimble is put into a lathe
to be turned down to its final shape
and dimensions. 1t is dull colored
when it goes into the lathe. but at the
first touch of the keen edged cutting
tool it shows a giistening narrow band
OF bright gold surface, which is widen
ed in a moment to cover the whole
length of the thimble as the skillful
worker shifts the tool along.
With repeated application Of the tool
the operator brings the crown Of the
thimble into its perfect form and cuts
down along the thimb le's sides to bring
the walls of the thimble to the requi-
site thickness, and he defines and fin
ishes the smooth band that runs around
the lower part of the thimble and
brings into relief the rounded rim that
encircles the thimble at its opening at
once to give it a finishing ornamental
grace there and to stiffen it. The glis-
tening little gold shavings that he cuts
of in these various operations all fall
into a canvas trough suspended be-
tween him and the bench upon which
stands the lathe.
With that last touch to its rim in this
stage of making the former has grown
marvelously more thimble-like in APP
pearance, but somehow it still lacks the
breath, so to speak, of thimble life; ii
lacks yet the familiar indentations In
its surface that serve to support the
needle and to hold it in place. These
the thimble maker now proceeds to
make and the making OF these Is nice
work indeed.
1t is done with a tool called a knurle.
There is an end knurle and a side
knurle. An end knurle is simply han
die having set in it tiny, thin revolv-
ing wheel of steel, upon whose periph-
cry Is q continuous encircling row of
little bosses or knobs corresponding In
size to the indentations to be made.
The side knurle has in place Of such a
wheel little steel cylinder of a length
sufficient to cover that section of the
thimble that is to be indented on its
sides, this cylinder having knobs all
over it's surface. as the end knurle
wheel has around it's edges, and turn
ing, like the wheel. on its axis.
The thimble in the lathe is turning
with $500 revolutions a minute. and il
seems as though the application TO Its
surface Of any sort of tool with pro
tuberances on il must leave there only
a tangled and mixed up lot of irregular
marks. But now with the end knurle
the thimble maker makes an indenta
tion in the center of the top of the thin
BILE, and then he proceeds rapidly and
with perfect certainty with the enc
knurle to describe around that center
concentric rings of indentations. witt
| the indentation/ all perfectly made ant
the rings all |rfectly spaced. from thu
center TO the circumference of the top.
You may see him do this. but 20,
can't tell how he is able TO do ii. AnC
then with the side knurle he makes thu
| indentations in the sides of the thin
! Bile. making there as well, as he deftl.
| presses the tool against II, indentation
that run absolutely uniform and tru
and that end at their lower edge in
| perfectly true encircling line.
1t is astonishing and a pleasant thin
| to see how il develops and comes Z
| itself with the making of these IA
| miliar indentations, and now there re
mains to be done to 1t only the polish
| ing inside and out and you have tn
| finished gold thimble.-Philadelph
| Press.