in parts.
iS laying the conductors, C2, what
ever their nuinber,. Such artificial insulating-support
is illustrated Fig. and
5 illustrate cross-section two such under
ground troughs and T", sheet metal,
45 with their adiathermanousinclosures, (desig
nated and M", respectively,) each trough
containing single central hollow conductor,
as C".
6c fact, for some purposes may besuflicient
to simply cover the latter with moist mass,
as cement other plastic material, which so
long kept very low temperature
and frozen hard will afford adequate insula-
65 tion. Figs. This may effected many ways by
conveying cooling agent either through the
conductor through independent chan
nel and freezing solidifying any kind of
substance, thus enabling serve the pur
pose. may serve
as main, may any kind ma
terial more less insulating. with the conductors in
cross-section.insulating material, which extend into
to the frozen mass order prevent the cur-
rentfrom leaking, asaboveexplained. oth-
erwise, through the fwo hollow conductors O*
and C*, which found advantageous may be
covered with layer cheap material m,
such will improve their insulation, but not
prevent the freezing solidification the
surrounding substance The tubular con
ductors C*, preferably iron, may then
serve convey heavy currents for supplyiug
light and power,while the small ones ,
embedded the ice frozen mass, may be
used for any otherpurposes.
Another typical way carrying out in
vention, which reference has already been
made, shown Fig. Next the con
ductors will put in-position and tempo
rarily supported any convenient manner,
*5 and, finally, the trough will filled with
water other substance which will be
gradually frozen circulating the cooling
agent the closed path, before described. such cases exceedingly-low tem
perature the cooling agent may not bere-
quired, and the insulation will obtained
at the expense little power. improve the insu
lation the top, where most liable to
give way, layer some substance to', oil,
may used, and the conductor may cov
ered near the support with insulation as
shown, the same extending into the oil, for
reasons well understood. ervoirs R*. the first case the insulation W
is supposed ice obtained freezing
50 water preferably freed air order ex
clude the formation dangerous bubbles or
cavities, while the second case the frozen
mass some aqueous other substance
or mixture highly insulating when this
55 condition. Bind
ing-posts and B’are provided for con
necting the conductors the circuit each
station.
It will often desirable place the
same trough great number wires con
ductors serviD for variety purposes. which represents
a vessel filled with water other substance
to, frozen the agent circulating through
the hollow conductor C'\ which thus insu
lated and supported. and from each other the
joints Ja, and they are furthermore pro
tected the places where they, enter and
leave the ground flanged bushings I*
P, . showing trough simi
lar that Fig.
This being done and the conductors thus
35 insulated and fixed, layer the same oř
similar material will placed-on
the top and the whole covered with earth or-
pavement.3
action the pnmp.a trench will gener
ally dug and trough, round square,
as smaller dimensions than the trench,
placed ‘in the same, the intervening space
ao being packed with some material (designated
by more less impervious heat,
as sawdust, ashes, thé like. some instances, for exam
ple, may desirable insulate and sup
port conductor places ordinarily
done means glass porcelain insula
tors. Another valve V', of
suitable construction, may need for regu
lating; the flow the cooling agent.
Usually the trench will not level, but will
30 follow the undulations the ground, and
this will make necessary subdivide^the
trough sections effect the freezing of
thé substance filling successively.
Another typical application inven-
7°
75
80
85
9°
95
100
105
n o
»«5
iao
ia s
13*
. which represents
the cross-section trough, the same in
other respects those before shown, but
containing instead hollow conductor any
kind pipe conduit The cooling agent
may driven any convenient manner
through the pipe for the purpose freez
ing the water or* other substance filling the
trough, thus insulating and fixing number
of Conductors Such plan may par
ticularly suitable cities for insulating and
fixing telegraph and telephone wires the
like.
While invention contemplates, chiefly,
the insulation conductors employed the
transmission electrical. The cooling agent may in
this instance circulated, Fig.
It should stated that many instances
it may practicable dispense with ii
trough resorting simple expedients in
the placing and insulating the conductors. The conduit
L may, however, used simultaneously for
conveying and distributing any kind gase
ous cooling agent for which there demand
through the district. The
conductors are insulated from the res-
. Obviously twosueh con
duits may provided and used similar
manner the conductors C*. The trough may metal, as
sheet-iron, and cases where the ground
40 used the return circuit it. .energy dis
tance, may be, obviously, otherwise use
fully applied.
In such case plan may adopted which is
illustrated Fig
