The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1891-06-03
SCIENTIFIC AND INDUSTRIAL.
Electric welding is spreading.


Gas can be changed into liquid form.
Pals and tubs saturated with glycerine
will not shrink.
Galveston, Texas, has twenty miles of
electrical railway.
The street cars of Springfield, H., are
supplied with electric heaters.
Copper tubes now manufactured by
means of electrical deposition.
Since 1880 over 700 applications for
patents for electrical accumulators have
been made in England alone.
A good waterproof cement can be
made, it is said, from equal parts of red
and white lead worked into stiff paste
with boiling linseed oil.
The creosoted wood floors of build
ing recently burned in New York were
the only portion of the structure not de-
stroyed. They were only charred.
To obviate the waste of steam in steam
hammers an improvement has been intro
duced in fitting the hammers with two
pistons of different diameters, compound
ing them in fact.
Mica, which stands unique among
minerals as an insulating substance, Is
destined to become one of Connecticut's
leading products. Three new mines
have recently been discovered in that
State.
A new embroidery machine for use in
in making linen handkerchiefs can turn
out finer work than any work done by
hand. The north of Ireland must adopt
the new methods if it wishes to retain its
present leadership.
A late innovation is an electric railway
express service established in Western
town, by means of which, for a small
charge, all the packages bound out
ward for the suburbs are gathered up
at the depot and then delivered along
the route.
The production of electrically welded
steel chains will soon become ar impor-
tant industry in this country. The steel
chain will be one-thira lighter than the
present iron chain, with as great ten
sile strength, and can be produced at
considerable less cost.
At the coming Frankfort electrical ex-
hibiticn large balloon will be sent up.
The power sending up and maintaining
it will be electricity, which will be OBJ
tanned from a large dynamo on the
ground. A telephone will connect the
passengers with those on terra firma.
Cream of tartar is the tartaric acid of
grapes, and may be used in water with
c,,hetik,,to s,,.a
1t is the substitution OF mineral acid for
those of fruits and vegetables that is so
injurious to health; for instance, sui.
pheric acid in vinegar for the natural
fruit acid.
The North German Lloyd Steamship
Company's managers have concluded to
stick TO the single screw for all their new
steamships, believing that a single pro-
peller whirled by mighty triple. expan-
sion engine is more effective than twin
screws operated by two engines whose
combined power does not exceed that OF
the single-screw ship.
A saw has been designed for cutting
iron, mild steel or other metals of fairly
large sections. The inventor of this ap-
pliance claims that it is a cold iron saw at
once simple, powerful aud effective. 1t
is always in readiness for work, and can
be manipulated by inexperienced work
men. The machine is stated to be
capable of making 400 cuts through bars
of Bessemer steel four inches in diameter,
each cutting occupying six minutes on
an average, without changing the saw.