Improvements in or connected with Incandescent Gas Light and other Gas Lamps.
Year: 1897

page_text: Date of Application, 17th Dec., 1897-Accepted, 12th Mar., 1898
COMPLETE SPECIFICATION.
Improvements in or connected with Incandescent Gas Light and
other Gas Lamps.
I, LOUIS WOLFF, of 23, Lindenstrasse, Berlin, in the Empire of Germany, Manu-
facturer, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement:-
This invention relates to incandescent gas lamps and other gas lamps on Wolff's
system or other systems, in which the incandescent body or the other lighting flame
is directly surrounded or enclosed by a glass casing provided with openings and more
or less closed, a cylinder or the like being dispensed with.
The new form of these lamps consists of a light catching cup or frill arranged at
the foot of the glass casing over or around the burner. The technical object which
this new form serves consists in that the rays of light falling downwards and back-
wards from the source of light, that is to say against the burner are wholly or partially
A finer and more com-
caught in order eventually to be reflected to the opposite side.
plete lighting effect of the lamps is thereby attained. Such light catching
cups or frills are entirely new in lamps on the systems herein before described.
Some forms of construction of this light catching cup or frill are shown as an example
in the accompanying drawings.
Figures 1 and 2 show cups or frills a arranged over the burner;
Figures 3, 4 and 5 show cups or frills which project downwards and partially or
wholly cover or encase the burner b so that by means of these cups the rays of light
falling through the burner downwards or backwards are caught.
These light catching cups or frills may either be formed of one piece or of two or
more parts. Figure 3 shows as an example a light catching cup or frill formed of an
upper part a and an under part a¹. The special form of the light catching cups or
frills may of course be suitably varied according to circumstances or to the appearance
which it is desired to give to the lamps.
In the drawings glass casings c on Wolff's system are shown as an example in com-
bination with the light catching cups or frills, but these improved cups or frills may
of course be employed with any other suitable glass casings or globes.
By
The material of which these light catching cups or frills are made may be of any
suitable kind, such for instance as glass, porcelain, metal or the like material.
using suitable kinds of glass the rays of light may be only partially caught or the light
may be dulled or softened downwards or backwards, whilst if it be desired to reflect
the light, metal or glass or porcelain covered with a mirror surface may be
employed.
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:-
In incandescent gas light or other gas lamps in which the incandescent body or
AN GERMANnded by a clear easing or holl
avlinder being dis

page_text: pensed with, the arrangement at the foot of the casing or bell of light catching cups
or frills of any suitable form of construction, formed either in one piece or of
several parts and leaving the burner either entirely free or entirely or partially covered
or cased, for the technical purpose of wholly or partially catching the rays of light
falling downwards or backwards (towards the burner) and thereby obtaining a better 5
lighting or illuminating effect, substantially as herein before described.
Dated this 16th day of December 1897.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.