Year: 1888

page_text: Date of Application, 10th Feb., 1888
Complete Specification Left, 23rd May, 1888
Complete Specification Accepted, 10th Aug., 1888
We THOMAS FLETCHER and ALFRED CLARE both of Thynne Street Warrington in
the County of Lancaster Manufacturers of Gas Apparatus do hereby declare the
nature of this Invention to be as follows :—
The object of our Invention is to provide a regenerative gas lamp wherein the Gas
is supplied from below and the whole of the air to support combustion of the same is
supplied also from below in such a manner that a steady and brilliant flame is produced.
A lamp constructed according to our Invention consists of a burner preferably circular
having a perforated casing (open at top and bottom) surrounding its lower part tho
said burner having mounted upon and fixed to its upper part a perforated.or reticulated
chamber (closed at top and open at bottom) surrounding which so as to leave an air
space between them is a hood closed at top and preferably having a flange at its lower
edge forming a deflector for the flame from the burner. This flange and the outer
surfaces of the hood act as reflector of the flame. There is an air space between the
burner and the casing which surrounds it and at a short distance below the top of the
casing may be a perforated ring through which the air can pass. When the gas
issuing from the burner is ignited currents of air pass from below to supply both the
under and upper side of the flame. The air for supplying the under side of the flame
passes partly up through the space between the per orated casing and the outer side of
the burner and through the perforated ring (if it be used) in the said space and issues
through the space between the top of the said casing and the burner at a point just
below the place at which the gas issues from the burner. Part of the air passes
through the perforations of the casing and ascends outside the casing to the flame
The air for supplying the upper side of the flame passes up through the inside of the
burner into the perforated or reticulated chamber and through the perforations or
reticulations thereof and into the space between it and the hood and down that space

page_text: and issues at a point just above the place at which the gas issues from the burner. In
the last named space there may be a ring or the like for steadying and equalizing the
air current.
The lamp is provided with a transparent chimney which may be supported by a
gallery at the lower part of the aforesaid perforated casing.
Dated this 10th day of February 1888.
WILLIAM E. HEYS,
Agent for the Applicants.
We, THOMAS FLETCHER and ALFRED CLARE, both of Thynne Street, Warrington in
the County of Lancaster, Manufacturers of Gas Apparatus, 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 :-
The object of our Invention is to provide a regenerative Gas Lamp wherein the gas
is by preference supplied from below, and the whole of the air to support combustion
of the same is also supplied from below in such a manner that a steady and brilliant
flame is produced.
We will describe our Invention with reference to the sheet of Drawings which we
have appended hereto.
Fig. 1. is a vertical section of a Gas Lamp constructed according to these Improve-
ments; Fig. 2 is a sectional view along the line X Y and Fig. 8 is a sectional view
along the line X. Z. Fig. 1.
In each of the Figures similar parts or details are denoted by similar letters of
reference.
A Gas Lamp constructed according to our Invention consists of a burner A which
is preferably circular in cross section; a perforated casing B below the burner and
open at the top and bottom, through which the air for the under side of the flame
passes in two streams, one of which supplies the root and the other the lower
surface of the body of the flame; a flange Caround the lower end of the casing
which is employed as a gallery for the chimney D and which prevents access of air to
the flame except through the channels or passages provided for that purpose; a
perforated or reticulated chamber E mounted upon and above the burner, closed at
the top and open at the bottom to the interior of the casing B; a hood F, surround-
ing the perforated cylinder and the chamber E, the hood F, being closed at the

page_text: top and open at the bottom, enclosing the air space G, and preferably having its
lower portion shaped so as to form a deflector and reflector to the flame. There is
an air space H between the burner and the casing B and at a short distance below
the top of the casing there is a perforated plate or ring I through which the air
can pass.
The whole of the air supply for the lamp enters by the lower end of the casing,
within which the current is divided into two main portions of which one passes
directly upwards and through the perforations or openings in the chamber E into the
air space G in the hood where it becomes heated and from the lower end of
which it issues in two separate streams to supply the upper side of the flame. The
other portion of the current is also sub-divided, one part of it ascending through the
annular part H of the casing to supply the root of the flame while the other part
passes through the perforations in the casing into the space between the casing and
the chimney to supply the under side of the flame. The perforated cylinder or ring K
in the air space of the hood serves to divide the air supply to the upper surface of
the flame and to steady the currents.
In a Gas Lamp constructed as herein before described only a very short cone of
shadow is produced above and below the Lamp which is therefore practically
shadowless.
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 :-
A regenerative Gas Lamp in which the whole of the air supply enters through a
casing below the burner; in which the whole of the air for the upper side of the
flame is derived from the hood or regenerative chamber above the burner in two
streams, one of which is directed upon the root, and the other upon the body or
tips.of the flame; and in which the whole of the air supply for the under side of
the flame is derived from the casing in two streams, one of which is directed upon
the root, and the other upon the body or tips of the under side of the flame con-
structed and arranged substantially as described and as illustrated by the accompanying
drawings.
Dated this 18th dow of M AD 1888
WILLIAM E. HEYS,
Agent for the Applicants.