Year: 1895

page_text: Date of Application, 19th Nov., 1895-Accepted, 21st Dec., 1895

page_text: close up the end of such duct by screwing in its cap K until the apertures N are
closed. A duct or ducts can be emptied of its oil, by opening the lower valve, and
allowing the oil to flow into the lower box from which it may be pumped into any
desired receptacle. Then the conductor can be withdrawn if desired, replaced and
the duct refilled.
In building this type of conduit in hilly ground this is a very desirable
construction, as we are able to arrange the inclined sections of such length as
to have but a limited hydrostatic pressure, by arranging the boxes nearer
together.
Such an insulation has proven to be as nearly perfect as anything yet known and
if desired bare wires can be used in the ducts, with currents of very high voltage,
as is desired for long distance transmission.
If desired, the oil may be used to fill the junction boxes above the switches, as
shown in Fig. 2.
Having now particularly described and ascertained, the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1. In a conduit for electrical conductors, a tubular duct, a conductor supported
therein, boxes dividing the duct into sections, a nonhardening non-conducting fluid,
filling the duet, and means for opening and closing the sections of the ducts
whereby each section may be filled or emptied of its fluid independently of the
other sections.
2. In a conduit for electrical conductors, the combination of a conduit having an
inner duct, a conductor supported therein free from the sides thereof, a junction
box into which the duct leads, and a valve controlling the duct.
3. In a conduit for electrical conductors, the combination of a conduit comprising
an outer casing, and a series of inner ducts divided into sections, and valves to
control the end of each duct.
4. In a conduit for electrical conductors, the combination of a conduit comprising
an outer casing, and a series of inner ducts, junction boxes into which the conduit
leads, dividing the conduit into sections, valves in the boxes controlling each duct
independently and conductors in the ducts passing through the valves.
5. In a conduit for electrical conductors, the combination of a conduit comprising
a duct, a junction box into which it connects, the insulating nipple F thereon, the
cap K screwed thereon apertured at the end to permit the conductor to pass there
through and having the apertures N through the sides.
6. In an electrical conductor conduit, the combination with a conduit, having a
non-hardening fluid filling, of a wire passing through the filling, a junction box into
which the conduit, fluid and wire enter, and a switch in the box below the level of
the fluid.
7. In a conduit for electrical conductors composed of separated sections each
consisting of a conduit casing, a conductor passing therethrough and beyond the
same, a Huid filling in the duct and removable means for sealing the ends of
the duct.
8. In a conduit for electrical conductors, the combination with a series of
separated ducts, conductors passing through and beyond the same, a fluid filling in
the ducts and removable means on the ends of each duct for retaining the filling
in the ducts.
JAMES FULTON CUMMINGS.
WILLIAM CLYMAN YAWKEY.
Haseltine, Lake & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicants.