The Barre daily times. (Barre, Vt.) 1897-1959, 1914-04-20
ADDITIONAL EQUIPMENT.
For Barre Central of Vermont Tel. &
Tel. Co. Being Installed.

w. u. Heller. switchboard installer Of
the Western Electric company, is now
engaged with force of men in putting
in an addition to the local switchboards
at the central office of the Vermont Tel
& Tel. company. This addition provides
for an additional operators position with
so additional lines, and is required prop
erly to accommodate the requirements
of the office to the increased demands
for new lines, principally OF the one and
two party class.
When the Barre Office was cut to COM
mon battery system on April H. 1910,
there were installed six sections of relay
board to which an increase is now to be
made to meet the requirements of the
next two years. This additional equip
ment is made by the Western Electri
company at their factory at Hawthorne,
ILL.,, and is ssembled for frame work,
keys, and local wiring. After its ar
rival the expert workmen proceed to set
it up, wire in the relays and special cir
cults and to connect it to the, balance
of the equipment, after which it is test
ed out and put into operation, the work
requiring about two weeks time
In this additional section there are
so additional subscribers lines, answer
ing jacks and line relays, besides 80
cords, go keys and cord signal lamps
together with so subscribers line lamps.
The connecting of the section requires
cables to the intermediate distributing
frame and an additional run to the main
frame to connect with the underground
cables. With this addition the local
ta.1 .r1 will botr bob 1f s,,h
scribers' lines and $40 subscribers an
swering jacks which contain the lamp
signals to designate when call comes
in.
The following will give an idea Of
what is required to provide one opera
tors position of a common battery
switchboard. Besides the wood and iron
frame work to hold the keys, cords,
jacks, lamps, etc, there will be added
three condensers, six designation strips,
five fuses, one induction coil, six tele-
phone jacks, % jack spaces, 200 lamp
caps, S5 lamp sockets, 100 number plates.
so relays, 40 resistances, 80 cords, 80
keys, | 300 feet braided wire, 500 feet
switchboard cable, consisting of "a ,4S0
feet Of single wire. The principal addi-
tion, however, is included in 80 answer
ing jacks and $50 multiple jacks.
In this last item is shown a feature
Of the multiple switchboard that does
not obtain in smaller switchboards where
but one or two operators are employed.
In the larger switchboards all operators
although capable OF answering but
limited number of lines must have ac-
,ess to all lines for making connections,
hsN lie hn4 4
20 to any other line in the exchange.
10 make this possible second jack is
provided for every line, in addition to
.he one where the operator answers the
,alls; not only is this necessary but each
,ne of these additional Jacks tcalled
multiple jacks have to be repeated in
very position for the use of all opera
,ors.
Thus in switchboard having 800 an.
Iwering Jacks (which are holes into
which the plug is inserted bp the OPP
'rator, connecting with springs which
ire in turn connected with the line
wires, when answering calIs) must have
900 multiple jacks. This is one rea-
on why the cost per line for central
'fiice equipment increases as the mum
,ers OF subscribers to a greater degree
han is represented by the latter figure
nd not only affects new subscribers
ines added but adds to the cost of all
ines already connected.
The cost OF the above addition will |
e approximately $500. The installation
4 the section requires the opening up |
{ all lines in order TO multiple them
nto the new position panels, which work |
) arranged to be done so that subserib- |
RS service will be uninterrupted.