The daily gazette., 1881-04-13
THE FIRE ALARM.
WHAT THE CONTRACT HOR WHINING.
Tons CALLS FOR,

WHAT THE CONTRACT RoR WHINING
Tons CALLS YoR.
Last night the contract for the erec-
ton of FIRE alarm telegraph system
in WILMINGTON. by the Gamswsll Fire
Alarm Telegraph Company, BY its
agent, ]. Frank Morrison, of Balti-
more, was signed, sealed aud deliver,
cd. The contract price 10 5000. fer
which q system will be constructed
under The following requirements
Six,een automatic, non-interfering-
AiRnal boxes, to be connected in two
metallic circuits or loops, with q re.
peater at the City Hall said circuits
moi to exceed ave miles Of wire. The
signal stations OF street boxes shall
have their outer doors provided with
trap locks, with Ave keys to each box
all the keys to be uniform aud capa.
BILE of operating the locks Of any bsx
in the city. The wires entering and
leaving The bsxss shall be promptly
insulated and enclosed in iron pipes,
extending from the tops Of the boxes,
10 o point near the lever srOss-arm or
bracket.
Each BOX, in addition to the neces-
sary machinery for sending in an
alarm, shall be provided with Morse
telegraph key, lightning arrester, aAd
q gong, the striker Of which shall be
attached to o magnet connected with
the sleclro> neohanism Of the box, for
testing, engineers and other signals
proper ground escapes shall be attach.
cd to all the lightning arresters.
There shall be furnished eight cleo.
tro- mechanical gong strikers, with
Rongs not less than sixteen inches In
diameter, for The engine houses, one Of
which shall be placed In each engine
house Of the fire department.
There shall be furnished an auto
matio repeater, so constructed and ar
ranged as to accommodate tive circuits,
80 that in ease of break or lnterrup
tioa to one of the circuits, the other
shall remain intact and undis'urbsd,
aud capable of being used for the rec
csption and transmission Of alarms oi
| hre.
Tue poles shall he Of chestnut timber,
not less than 10 feet long and Fix iDchet
| in diamater at the top. Cross arms are
/ to bs used when - ore than one wire u
ON a polo; when only ono wire. q bracket
may be used. The cross-arms shall be
| of dressed tim ber, 3x4 inshes, and fast
enei to the pole by q screw.bolt and
| two spikes. The brackets shall be oi
While oak, with screw tops, and fasten'
ed TO the poles with two nails OF suitable
size. Ali pavements to be relaid wher
torn up tn set the poles. The insnlator'
shall be OF the kind known as screw
glass sulsiors. The wire used shall bs
or Ralvani sed iron, NO. is gauge sub
iect to the standard tests for conductive
ty, etc. All tue joints In the limo wir'
are To 5e made twisted, not less thar
three turns ON each side, and CAREFUL.
aol,iered. The tie wires TO be OF th'
same gauge and quality an The line wire
Each tie wire to take one turn aroun'
the tnsulator aud to be securely fastened
to the nns wire on each sife.
whenever Wiies pass through wall
or Iors or Of her parts Of bpildin ngs, the
shAll be insulated with rubber tubing.
There shall be also furnished q SUN
clens number of cells Of batter
TO propsrIy work tho machinery.
There shall also be furnished two ga
yanonsters, permanently located In th
circuits, for ths,purpse Of locating inie
ruptlons.
There shall also be furnished one Rrei
b. ll-siriksr, to sound alarms OF tire upo
the bell In the tower of the City Hall.
All the work done and all the materi
furnished shall be of the best Qualit
= In every respect.
The coutraoL 10 t. be completed will
!, In ninety days, and the company agre
TO protect the city IN the use of all
d patents, and to guarantee the perfe
working OF the system aud keep Il In