Improved Globe for Reflecting Arc Lights.
Year: 1892

page_text: Date of Application, 2nd Sept., 1892
Complete Specification Left, 24th Apr., 1893-Accepted, 27th May, 1893
PROVISIONAL SPECIFICATION.
Improved Globe for Reflecting Arc Lights.
I, HENRI PIEPER Fils of No 12 Rue des Bayards, Liege, in the Kingdom of
Belgium, Engineer, do hereby declare the nature of this invention to be as
follows:-
The present invention consists of a globe for that class of electric arc lights,
employed as reflecting lamps, and the object is to efficiently enclose the flame of
the lamp and thus render its employment possible in weaving sheds, carding and
spinning rooms and the like, without danger of fire being caused by the ignition of
particles of fluff or the like floating about in the air of such rooms, and coming in
contact with the glowing carbon ends. By reflecting are lamps I understand those
lamps in which the negative pole is attached to the upper carbon and the positive
pole to the lower carbon, so as to throw most of the light radiated by the positive
carbon on to the ceiling or a reflector. By making the lower part of the globe of
opalescent glass, and the upper part of clear glass and thus reflecting the light
on to the ceiling or a reflector, a soft, pleasant light is diffused over the room.
In the present invention the lower part of the globe which is of opalescent glass,
is tightly fixed to the body of the lamp, whilst the upper half is of clear transparent
glass and terminates in a tube sliding on the supporting tube of the lamp. The
lower part as also the upper tube of the globe are provided with air holes for
ventilating purposes, said holes being covered with fine metallic gaze. The upper
tubular part of the globe may be provided with hooks whereby the same may be
suspended to the supporting tube when it is desired to raise the globe to put in
new carbons.
Various shades of opalescent glass may be employed according to whether it is
desired to throw more or less light on to the ceiling or the reflector, or the upper
part of the globe may also be made of light opalescent glass. If all the light is to
be thrown upwards, the lower half of the globe may be made of metal. Such
globes may be made in one piece or two halves and the same made to close tightly
one on the other.
Dated the 2nd day of Santamber 1800
J. H. JOHNSON & Co.,
Agents.
.
COMPLETE SPECIFICATION.
· Improved Globe for Reflecting Arc Lights.
I, HENRI PIEPER Fils of No. 12 Rue des Bayards, Liege, in the Kingdom of
Belgium, Engineer, do hereby declare the nature of 'this invention to be as
follows:-
The present invention consists of a globe for that class of electric arc lights,
employed as reflecting lamps, and the object is to efficiently enclose the flame of
the lamp and thus render its employment possible in weaving sheds, carding and
spinning rooms and the like, without danger of fire being caused by the ignition of
particles of fluff or the like floating about in the air of such rooms and coming in
contact with the glowing carbon ends. By reflecting are lamps I understand those
lamps in which the negative pole is attached to the upper carbon and the positive
pole to the lower carbon, so as to throw most of the light radiated by the positive
carbon on to the ceiling or a reflector. By making the lower part of the globe of
opalescent glass (bone-glass), and the upper part of clear glass and thus reflecting
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page_text: the light on to the ceiling or a reflector, a soft, pleasant light is diffused over the
room.
In the Figures 1 and 2 of the accompanying drawing the lower part of the globe
which is of opalescent glass (bone-glass), is tightly fixed by means of a cylindrical
base O to the body of the lamp, whilst the upper half is of a clear transparent glass
and terminates in a tube or neck B¹ sliding on the supporting tube T of the lamp.
The lower cylindrical part O as also the upper tube T of the globe are provided
with air holes H for ventilating purposes, said holes being covered with fine
metallic gauze M as shown for the part O in Figure 2. The upper tubular
part or neck B1 of the globe may be provided with one or several hooks K whereby
the same may be suspended to studs L of the supporting tube T when it is desired
to raise the globe (Fig. 2) to put in new carbons.
Various shades of opalescent glass (bone-glass) may be employed according to
whether it is desired to throw more or less light on to the ceiling or the reflector,
or the upper part of the globe may also be made of light opalescent glass (bone-
glass). If all the light is to be thrown upwards, the lower half of the globe may
be made of metal. Such globes may be made in one piece as shewn in Figures 1
and 2 or composed of two halves and the same made to close tightly one on the
other. The composed globes may be cleaned easily. For this purpose or for
replacing carbons only the upper part of the globe is raised, as represented in
Figure 4.
What I claim is-:
1. The combination with reflecting arc lamps of a safety-globe, having its lower
part of more or less dark opalescent glass (bone-glass) or metal and the upper part
of clear or lightly opalescent glass the lower and the upper part, if both made of
glass, being either in one piece or in two pieces, substantially as described and
illustrated in the annexed drawings.
2. The combination of the globe described in the first claim with perforations
covered with metallic gauze arranged in the base of lamp and in both ends
of the supporting tube for the purpose of ventilating the globe, substantially as
described.
Dated the 24th day of April 1893.
0
H.
I. I. JOHNSON & Cv,
Agents.