The Savannah morning news. (Savannah, Ga.) 1900-current, 1901-04-29

back of the machine is a clock-work APP
paratus connected with an escapement'
which continually turns a wheel, upon
the edge of which are rollers engaging
with "a rod, which operates on the arma-
ture OF the magnet. This wheel revoiVes
so that one of its rollers passes the emo
of the rod about every two minutes. AS
soon as the roller passes the weight
tends suddenly to jerk the armature back,
but, since the apparatus is conhecteu
through the closed circuit Of boxes, the
resistance offered to the flow of current
i'm the armature circuit is SO great fhat
the apparatus settles quietly back WIN
out producing energy sufficient to ring
The bells in circuit.
Should. however, the circuit lie open,
there viii be no resistance to the move
ment Of the armature, and the weight
will descend suddenly, striking the upper
end OF vertical rod. which is attached
to the bell. This gives its warning signai
for open line and continues to give IT
every two minutes until the line Is re-
paired. Should the number OF circuits
of boxes enter the same station, SIM
pie communicating device will readily con-
meet them in turn ito this testing appara-
tus which may then be speeded up. II
desired, so that each line is tested at
regular and short intervals.
AS supplemental to the fire alarm sys-
TEN is shown an auxiliary, which is to
be placed in large buildings. In case OF
an outbreak of fire, thermotats, connected
with the apparatus, which is located IN
the main Office of the building, cause this
to act automatically, and to drop call
on the enumera tor. This shows the num-
Der of the room, at the same time notl-
flying the Office by the sounding OF
gong, and also notifies the telephone of
foe hxr gaKadi t,er in On
be attached to the nearest street box, so
as to send in a fire alarm from that
box.
In the line of railway electric signal
work it is asserted that this new mag
neto device will be hailed as a distinct
and positive gain; that the battery, with
its liability to freeze up tight at critical
moments, and when life and property are
at issue, is an element of weakness that
the railway companies would be glad 10
have eliminated.
1T is said that experiments made in the
Western Union office in New York dem
onstrated that the instruments worked
by the Woolley magnet system can trans
init messages for long distances without
relays and with perfect satisfaction. Fur
thermore, they work equally well with an
ordinary, inexpensive iron wire. The dis
carding of the batteries, coupled with the
saving of vast sums in zinc, copper and
blue vitriol, gives buoyant hopes to the
advocates of the new invention regarding
its brilliant prospects in the commercial
Geographic field, particularly when it is
considered that in the United States
there are estimated to be at present in
use between $4,000 and 100000 Geographic
instruments.
For the military field telegraph it. would
also seem to have good claims for general
adoption. An officer of the United States
army who examined this system stated
that in his opinion not only the American
government, but foreign governments also
would be glad to adopt It. For field pur-
poses a neat and compact apparatus,
combining both the transmitting and re-
ceiving instruments and weighing only
four pounds, has been put together. A
telephone receiver can also be attached
whereby the message is receivd directly
into the ear
To the electrician Mr. Woolleys inven-
ton will solve the problem of contact
points, there being no contact points
whatever. according to the claim in the
magnetic arrangement. The fact that the
clock wheels geared to the armature of a
strong magnet in such a way that the
latter performs a series of half turns
corresponding to the number sent out by
the box. The turning of the armature is
accomplished by a lever and ratchet sys-
TEN. operated by a cam driver by the
handspring and cut into such shape as
to send the predetermined signal from
its particular box. At the receiving sta
ton is placed a polariZed electro-mecha =
ical gong or relay as may be desired,
or the functions of both may be COM
bined.
very ingenious looking contrivance is
used to test the continuity of the circuit
on which the boxes are placed. 1t prompt
ly gives warning If the circuit is broken
It's chief features are a powerful magnet,
which has it's armature coupled by means
of a lever and a connecting rod. On the