Improvements in Guards for Overhead Electric Conductors such as Trolley Wires and the like.
Year: 1899

page_text: Date of Application, 18th Jan., 1899
Complete Specification Left, 18th Nov., 1899-Accepted, 23rd Dec., 1899
PROVISIONAL SITULȚIVA LIVA,
Improvements in Guards for Overhead Electric Conductors such as
Trolley Wires and the like.
I, PETER LLOYD JONES, of 29, Romeo Street, Kirkdale, Liverpool, in the County
of Lancaster, Manufacturer, do hereby declare the nature of this invention to be
as follows;-
-
This invention relates to the guards which are used to prevent falling telephone
wires or the like from making metallic contact with overhead electric conductors
such as trolley wires, and has reference more particularly to that class of guard
which is supported from the conductor itself, which latter is usually of circular
cross-section.
Such guards are usually made of wood, though of course any other suitable
non-conducting material may be employed, and are carried above the conductor
and parallel therewith, and require to be attached to the conductor, so as to pre-
vent displacement, by clips which whilst ensuring a firm connection shall not
interfere with the action of the trolley wheel or other contact device.
According to my invention, I construct such guards and hold them in position
as follows:-
The guard, which is preferably of wood machined to a suitable cross-section and
supplied in convenient lengths, is attached to the trolley wire by clips made in
pairs, one clip of each pair being on each side; the clips are adapted to grip the
trolley wire and the guard as they are drawn together by a screw whose shank
passes through a clearance hole in the one clip and screws into a tapped hole in
the other clip.
As the clips are in metallic contact with the trolley wire, they must, of course,
be kept below the main part of the guard, and the latter accordingly has a con-
tinuous beading formed on its under side of a diameter approximately equal to
that of the trolley wire. The portion of the guard above the beading is wider
than the latter, so that a fallen wire suspended by it, hangs clear of the trolley
wire and clips, the cross-section of this upper part being either semi-circular
or circular, in which latter case the cross-section of the guard, as a whole,
resembles the figure 8, the lower portion, which forms the beading, being of course
smaller than the upper portion which forms the guard proper.
The portion of the clips which grip the trolley wire are so shaped as to grip
the latter slightly below its horizontal diameter, but are rounded off so as not
to offer any obstruction to the passage of the trolley wheel.
It is usual to carry the guard over those portions of the conductor which are
situated under telephone or telegraph wires, and at each end of a length of guard
I attach end guards adapted to prevent wires which may fall on the guard near
the ends thereof from slipping off on to the conductor. Such end guards are
preferably attached to the main guard by a clip which encircles the latter, and

page_text: which is tightened by means of a screw; the beading is preferably cut away for
a short length at the two ends of a length of guard, so that the clips last mentioned
do not encircle the beading and are thus quite clear of the trolley wire.
Dated this 17th day of January 1899.
SLOAN & LLOYD BARNES,
34, Castle Street, Liverpool, Agents for the Applicant.
Improvements in Guards for Overhead Electric Conductors such as
Trolley Wires and the like.
I, PETER LLOYD JONES, of 29, Romeo Street, Kirkdale, Liverpool, in the County
of Lancaster, Manufacturer, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and aṣcer-
tained in and by the following statement:-
This invention relates to the guards which are used to prevent falling telephone
wires or the like from making metallic contact with overhead electric conductors
such as trolley wires, and has reference more particularly to that class of guard
which is supported from the conductor itself, which latter is usually of circular
cross-section.
Such guards are usually made of wood, though of course any other suitable
non-conducting material may be employed, and are carried above the conductor
and parallel therewith, and require to be attached to the conductor, so as to pre-
vent displacement, by clips which whilst ensuring a firm connection shall not
interfere with the action of the trolley wheel or other contact device.
According to my invention I construct such guards and hold them in position
as follows, reference being made to the accompanying drawings which illustrate
the application of my invention to guards for trolley wires, and in which Figs. I
and II show the shape of the guard and mode of attachment, Fig. I being an
elevation and Fig. If a transverse section on A, A, of Fig. I; Figs. III and IV
show the construction and attachment of the end guards, Fig. III being an
elevation and Fig. IV an end elevation; and Figs. V and VI illustrate the method
of connecting successive lengths of the main guard, Fig. V being an elevation and
Fig. VI an end elevation.
The guard 1, which is preferably of wood machined to a suitable cross-section
and supplied in convenient lengths, is attached to the trolley wire 2 by clips 3, 31,
made in pairs; the clips are adapted to grip the trolley wire and the guard as
they are drawn together by a screw 4 the shank of which passes through a clearance
hole in the one clip 3 and screws into a tapped hole in the other clip 31.
As the clips are in metallic contact with the trolley wire, they must, of course,
be kept below the main part of the guard, and the latter accordingly has a con-
tinuous beading 11 formed on its under side of a diameter approximately equal
to that of the trolley wire. The portion of the guard above the beading is wider
than the latter, as shown, so that a fallen wire suspended by it, hangs clear of
the trolley wire and clips, the cross-section of this upper part being either semi-
circular or circular, in which latter case the cross-section of the guard, as a
whole, resembles the figure 8, the lower portion, which forms the beading, being
of course smaller than the upper portion which forms the guard proper. Instead
of making a continuous narrow beading such as 1', the width of the guard may of
course be reduced at intervals and where the clips are attached.
The portions of the clips which grip the trolley wire are so shaped as to grip

page_text: the latter slightly below its horizontal diameter, but are rounded off so as not
to offer any obstruction to the passage of the trolley wheel.
It is usual to carry the guard over those portions of the conductor which are
situated under telephone or telegraph wires, and at each end of a length of guard
I attach end guards (Figs. III and IV) adapted to prevent wires which may
fall on the guard near the ends thereof from slipping off on to the conductor.
Such end guards are preferably attached to the main guard by a clip 5¹ which
encircles the latter, and which is tightened by means of a screw 6; the beading is
preferably cut away or, as shown in the drawings, slotted for a short length at
the two ends of a length of guard, so that the clips last mentioned do not encircle
the beading and are thus quite clear of the trolley wire.
I find it desirable in practice to connect the successive lengths of the guards 1,
and this may be effected, as shown in Figs. V and VI, by means of connecting
clips 7 which encircle the upper portions of two abutting guards; the beading 11
may be slotted as shown to allow the clips to be inserted, or they may be cut away
for a short length from the ends, and the edges 7' of the clips 7 may be turned
up so as to ensure a more effectual grip; the latter modification is shown by
chain lines in Figs. V and VI.
I am aware that wood guards supported from the trolley wire have been used
prior to the date of my invention and I make no broad claim to such guards,
but:
-
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
1. The improvement in guards for overhead electric conductors and the like,
which consists in attaching a guard of non-conducting material of suitable cross-
section to the conductor by means of clips arranged in pairs, one on each side
of the guard and the conductor, each pair being connected by a screw or screws
by means of which they are drawn together so as to grip the guard and the con-
ductor; substantially as described and illustrated.
2. In guards for overhead electric conductors and the like, in combination,
a guard of non-conducting material having an upper portion wider than the con-
ductor which it protects, and a lower portion approximately equal in width to
the conductor, and clips, arranged in pairs connected by a screw or screws and
adapted to secure the guard to the conductor; substantially as set forth.
3. In guards for overhead conductors and the like, in combination, the guard
of non-conducting material, the clips arranged in pairs connected by a screw or
screws, and the end guards which clip the ends of the main guards; substantially
as described and illustrated.
4. In guards for overhead conductors and the like, in combination, a guard of
non-conducting material provided with a beading such as 14, clips arranged in
pairs connected by a screw or screws adapted to grip the said beading and the
conductor, the end guards, and the clips for connecting the successive lengths of
the guard substantially as described and illustrated."
5. The improved guard for overhead electric conductors and the like; substan-
tially as described and illustrated.
Dated this 17th day of November 1899.
SLOAN & LLOYD BARNES,
Chartered Patent Agents, 34, Castle Street, Liverpool,