An Improvement in Regenerative Gas Lamps for Railway Carriages.
Year: 1891

page_text: Date of Application, 6th Nov. 1891-Accepted, 12th Dec., 1891
COMPLETE SPECIFICATION.
An Improvement in Regenerative Gas Lamps for Railway Carriages.
I, ISAAC JOHN COLLINS, of the Lamp Manufacturing Company, No. 45, City
Road, in the County of London, Lamp Manufacturer 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 :—
In the Specification No. 10447 of 1889 is described a regenerative gas lamp
suited for a ceiling or position overhead, my invention relates to the casing and
shielding of a lamp of this kind, when it is fixed in the roof of a railway carriage,
so as to protect the flame from the wind as I shall describe referring to the
accompanying drawing. In this drawing, the lamp, which is of the construction
shewn in Fig. 1 of the drawings annexed to the Specification No. 10447 of 1889
above referred to and has its parts marked with the same reference letters is shewn
in elevation, the casing and shielding arrangements according to my invention
being shewn in section. I employ an enlarged glass K and provide a reflector L
extending from the side of the lamp to the edge of the glass, which may be held as
shewn by its lip engaged in the hollow of a removable bead K¹ or in any other
convenient way.
The opening through the roof W is surrounded by an angle iron
ring M which is shouldered at its upper edge to receive an outer casing N. Also
in notches in the upper edge of this ring lies a gas pipe (which stretches quite
across the ring and has at its middle within the lamp a T with branch G descending
to the burner B. The gas is supplied to either end of the pipe G₁ the other end
being stopped. Within the outer casing N there is an inner casing Q which is
narrowed in at the top and has a reduced tubular part Q extending to about the
height of the chimney C. Above the chimney C is a cover S with internal conical
deflector.
The outer casing N and the inner casing Q are perforated with holes as shewn
for admission and emission of air and products of combustion, and the upper holes
of the outer casing are shielded by a cylindrical casing V. Air enters by the holes
in the lower part of the outer casing N a portion of it goes to supply the lamp
entering the regenerative heating chamber by the openings A and also the
chamber a and the excess, which may be caused to enter by wind gusts or by the
rapid passage of the casing through the air, finds its way upwards and out along
with the products of combustion through the shielded outlets at the upper part of
the casing, so that the steadiness of the flame is not affected.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The construction of external casing and shields for a regenerative gas lamp
placed in the ceiling of a railway carriage, substantially as herein described and
illustrated by the accompanying drawing.
Dated this 6th day of November 1801
ABEL & IMRAY,
Agents for the Applicant.