The Globe-republican. [volume] (Dodge City, Kan.) 1889-1910, 1895-06-14
TO MEND OLD I.IBExrY BELL.


Historic Crack.
Philadelphia. June 1.-THE old crack
ed bell hanging idle and useless In In,
dependece hall may soon be made to
lift ND its long sti1led voice and ring
out in all its useful vigor. Early in
the present century the efforts Of in
ventors. bell moulders and metal work.
ers were directed to the accomplish
ment Of this end. but without avail.
Lately the same efforts were made to
mend other bells that had become
dumb, but all without and fruitful re-
suits and it was generally agree that
cracked bell was worth only 50 much
pound as old metal
A system Of electric welding has
been devised by Russian. Salianof,
buy which old bells. cracked to the
very crown may be made as new. This
new process Is known as the hydro.
electrothe dmic" and it appears to of
fer interesting possibilities. though not
yet fully developed. Its principle de,
Ponds on the employment of q bath
and on the development Of hydrogen
rounds the part Of the object to be
treated, forming high resistance to
the current, which Is transformed at
this point into calorific energy and
communicated to the metal or other
object forming the negative pole.
This method is said to be an Inn
provement on the methods of both
Thomson and Bernado. which are well
known to metal workers. and it has
been In successful operation for some
time at the Perm Gun Works, in Rus
STA.
The essential principle Of the Slav-
ianon system Is contained in the sup
ply Of molten metal to the fractured
part Of the same nature as that Of
hfNh the nhinCt n ho No
composed. As will be readily surmised
both electrodes in the Slavianofr sys-
tenn are OF metal, one electrode being
provided by the object to be operated
on, the other by metal Of the same
kind in the form Of circular bar.
which during the operation. is gradual
ly melted down. The range Of work
can be successfully undertaken by this
method Is very great. The instance OF
the bell mending, as shown herewith,
offers almost an inseparably difficulty
to even the latest practice Of other
systems in this direction.
The process Is described to be. in all
its details. says the Western Electri-
clan. one Of the greatest certainty. ease
and convenience. The metal electroda
affordirg the supply by means Of mol
ten metal is self-regulating by means
of a spring and solenoid, by means Of
which its uniform position while melt
ing may be automatically maintained.
This regulating apparatus occupies but
little space, and is so arranged that in
case Of an accident to the dynamo
the workman can at once throw the
whole apparatus out Of operation. In
addition to the regulating mocha inism
referred to, there is a solenoid, and also
a communication arranged in the electric
al circuit. AS the heat given off at the
negative pole is about double that of
the positive, an arrangement is made
so that the current may be reversed
at will in order to bring any or either.
Of any part, to a higher temperature.
1t may be mentioned that this .yaria-
ton in the current direction is accom-
plished with an effect on the chemical
construction of the metal; it being pos
sible, for instance, to produce a hard
white, or soft gray iron.