Evening star., 1909-06-12

accepted meaning is found in the London
Chronicle in 1855.
E. J. Dickey and c. H. Cove of Haver-
hill, Mass, claim to have invented
method whereby the suns rays can be
directly utilized for the generation of
electrical energy.
1t is estimated that the production of
blister and lake copper from ores mined
in this country will exceed by about s
per cent. or 5OnO.OOo pounds. that of
1907, which was s6S. .996, 49l pounds.
The casting of the great disk Of 100
inches In diameter for the SOAR observa-
tory on Mt. Wilson, Cal, proved fall
ure, but the flaws were not discovered
until the working of the glass was nearly
finished.
In 1905 Japan's foreign trade totaled
S14. .49S90S yen, consisting of 3IS.2S9. 436
yen exports and 436.2J9.412 yen imports.
The excess of imports over exports was
5s.O2ON36 yen. Raw cotton led in i'm
ports and raw silk in exports. being 30
nob.mO yen and 1OSO0.OUO yen, respect
lively. The imports included machinery
worth 34.oo0ro yen. and petroleum ID
OOo,O00 yen. Other chief imports We're
rice, beans sugar. wool, fax, hemp, oil
cake and iron bars and rails.
In the manufacture of seamless tubes
of brass 1t is now possible to make
these tubes large twenty inches
in diameter and ten or twelve feet long.
They are pressed from plate of metal
by hydraulic pressure 1t is possible to
make even greater lengths than this, but
there is little demand for them. In the
narrower tubes much greater lengths are
easily accomplished. The squares shipped
to the pipe mills vary in thickness from
three-eighths to three inches, and in size
from two to six feet square. The cor
ners are first sheared off to produce a
circular disk. This is heated to redness
and placed on the anvil of a hydraulic
press. by which the plate is punched
into a rough shallow cup. This cup is
again heated and punched through a
time reduce its diameter Three four
such operations are preliminary to the
finishing passes on the hot draw bench.
This apparatus consists of a heavy cast
steel frame equipped with powerful
hydraulic cylinder and a plunger the
latter operating through the full length
of the bench. The plungers are varied
in size according to that required in
the finished tube. and dies of successfully
decreasing diameter are dropped in the
recesses shown in the bench frame in
such positions that the hot elongated
steel cup may be forced through them
one after the other. The last and small
est of these dies presses the steel down
tlsht toWdTO the plunser Tor the fuii
length of the tube. The plate having
now been almost completely changed into
the tubular form, the original head or
the bottom of the cup. forms but small
proportion of it. Further hot dra wing
operations may be necessary to produce
a tube with smaller diameter and
thinner wall or a greater length. The
head or closed end remains until the
last operation is completed. and when
this is cut off the tube is finished Hot
drawn tubes are not smooth as those
which have been cold drawn
A keen eyesight and an abundance of
daylight has heretofore been necessary
for the purpose of sorting cigars into the
various grades Of color in which they are
put up. All efforts to perform this op-
GRAFTON by artificial light have been un-
were never satisfactory and the work
was slow and severe on the eyes of the
sorter. With the introduction of the
new tungsten lamp it has been discovered
and satisfaction. There is quality
possessed by the illumination of these
lamps that enables the sorter to detect
the most delicate degrees of difference
in the shading of the wrapper.
The total electric light and power gen.
Grating capacity in Japan at the end of
1905 was ST. .6OS kiiowatts-an increase of
1900 klowatts over 1907 Of this ca
pacity "a. $50 kilowatts were generated
by steam .951 klowatts by water power
and los klowatts by gas engines. Last
year the Toxic Electric Light Company
began taking power from katsura. forty
seven miles distant, the voltage beng
5000
~ wv