Improvements in Lamps.
Year: 1887

page_text: Date of Application, 25th Nov., 1887
Complete Specification Left, 27th Aug., 1888
Complete Specification Accepted, 24th Nov., 188
Improvements in Lamps.
I, THOMAS COOPER JOHN THOMAS, of 5, Carlton Road, Hornsey, in the county of
Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention has reference to what are known as regenerative or recuperative
lamps, for example, lamps of the general type described in the specification of Letters
Patent granted the 9th March 1854 to William Young and numbered 567; it can be
applied in lamps for burning gas or lamps for burning vegetable or mineral oils-and
has for its principal object to produce an efficient strong and inexpensive lamp in
which the regenerator or air heating apparatus shall be supported independently of
the glass that surrounds or encloses the burner and in such a manner as not to obstruct
the light by rods arms or other supports outside the flame.
The burner employed may advantageously be of the Argand type with or without
central air passage and with the gas orifices vertical horizontal or inclined-but other
analogous forms of burner may be employed, and air may be admitted to both sides
of the flame or sheet or sheets of gas or to one side thereof only-Connected to the
regenerator or air heating apparatus in such a manner as to support the same there is
a central part that may advantageously have the form of a frustum of a cone, and
which will hereinafter be called for distinction the male part; it has a central hole or
socket to receive a rod projecting upward from the centre of the burner and the
burner is made or provided with a socket or cup to receive the said male part
connected to the regenerator or air heating apparatus, or the arrangement may be
reversed-Thus it will be understood that when the parts are put together the male
part in the socket made to receive it and the rod in the central hole or socket designed
to receive it, the regenerator or air heating apparatus will be supported firmly in
proper position in relation to the burner but in such a manner nevertheless that it can
be readily removed and replaced as required-An independent gallery or other:

page_text: suitable means is or are provided to carry the glass that surrounds or encloses the
burner It will usually be advantageous to provide a light annular cover arranged to
surround the regenerator or a part of it and to rest upon the said glass, which cover
will thus adjust itself to suit the height of the glass.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.
I THOMAS COOPER JOHN THOMAS of 5 Carlton Road, Hornsey, in the County of
Middlesex, Engineer, 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 has reference to what are known as regenerative or recuperative
lamps, for example, lamps of the general type described in the specification of Letters
Patent granted the 9th March 1854 to William Young and numbered 567; it can be
applied in lamps for burning gas or lamps for burning vegetable or mineral oils, and
has for its principal object to produce an efficient strong and inexpensive lamp in
which the regenerator or air heating apparatus shall be supported independently of
the glass that surrounds or encloses the burner and in such a manner as not to
obstruct the light by rods arms or other supports outside the flame.
The burner employed may advantageously be of the Argand type with or without
central air passage and with the gas orifices vertical horizontal or inclined, but other
analogous forms of burner may be employed and air may be admitted to both sides
of the flame or sheet or sheets of gas or to one side thereof only.
Connected to the regenerator or air heating apparatus, in such a manner as to
support the same, there is a central part that may advantageously have the form of a
frustum of a cone, and which will hereinafter be called for distinction the male part;
it has a central hole or socket to receive a rod projecting upwards from the centre of
the burner and the burner is made or provided with a socket or cup to receive the
said male part connected to the regenerator or air heating apparatus, or the arrange-
ment may be reversed. Thus it will be understood that when the parts are put
together the male part in the socket made to receive it and the rod in the central
hole or socket designed to receive it, the regenerator or air heating apparatus will be

page_text: supported firmly in proper position in relation to the burner but in such a manner
nevertheless that it can be readily removed and replaced as required.
An independent gallery or other suitable means or are provided to carry the glass
that surrounds or encloses the burner. It will usually be advantageous to provide a
light annular cover arranged to surround the regenerator or a part of it and to rest
upon the said glass, which cover will thus adjust itself to suit the height of the glass.
The accompanying drawing illustrates in central vertical section a regenerative gas.
lamp, constructed according to this invention.
1 is a burner of the Argand type but without a central air supply; it consists of a
tube closed at its upper end by a cover 2 below which is formed a circular row of
horizontal holes 3 for the outlet of gas, and is secured at its lower end to a screwed
threaded part or tube 4 adapted to be connected to a pedestal, pillar, bracket gasalier
or other support through which the gas supply passes. 5 is a rod secured to and
projecting upward from the cover 2. 6 is a regenerator or air heating chamber
provided with air inlet passages 7, that are secured at their outer ends to a chimney 8,
the lower part of which surrounds the said chamber 6 as shewn. 9 is a central
support connected at its upper end to the regenerator or air heating chamber and
having its lower end 10 made of inverted conical form.
This lower end or male part rests upon the upper part of the cover 2 which is
preferably made in the form of a conical socket or cup, to receive it as shewn.
The support 9 is formed with a central hole or socket 11 to receive the rod 5 which
serves to maintain the regenerator or air heating apparatus in a vertical position and
prevents it falling.
The lower part of the air heating chamber 6 is preferably enlarged as shewn and
to it is secured a perforated sheet metal plate 12, or in lieu thereof wire guaze, which
is preferably made in the stepped form shewn in order to provide a large outlet area
for the passage of heated air and to cause the streams of air passing through the
openings in the said plate (or screen) to cross each other and thus become broken up.
The air pressure is thus rendered approximately uniform upon the whole of the upper
or inner surface of the gas flame, and the form thereof is consequently maintained
approximately constant.
13 is a gallery carried by or formed in one (as shown) with the part 4 ; it serves to
support a glass bowl or globe 14 and is formed with openings 15 for the entrance
of air.
This air enters a chamber 16* formed by a tube 16 surrounding the burner tube 1
from which chamber the air passes into the globe and to the outer side of the flame,
partly through the upper end of the tube 16 and partly through openings 17 formed
in the upper part of the tube.
18, 18 are other openings for admitting part of the air from the chamber 16* to the
lower part of the glass globe to keep the same cool.
19 is a ring of packing material such as asbestos upon which the globe 14 directly
rests.
20 is a light cover arranged to surround the regenerator or air heating apparatus
and also the lower part of the chimney and to rest upon the glass bowl the upper part
of which it closes. This cover serves to direct air through the passages 7 to the
regenerator or air heating chamber 6 and is preferably formed with a depending
portion 21 provided with openings 22 for admitting a further supply of air to the
globe to keep the upper portion of the same cool and clear, and to assist in carrying
off the products of combustion through the chimney.
As will be seen the cover 20 will adapt itself to the height of the globe. 23 is an
annular ridge or projection secured to the lower end of the chimney for the purpose
of strengthening the same; it also serves to arrest the descent of the cover 20 should
the globe break.
The cover 20 may be provided with a reflector.
With the arrangement described and shewn it will be readily seen that the
regenerator or air heating apparatus together with the chimney and cover 20 may be
readily lifted clear of the burner and globe for the purpose of lighting the lamp or for

page_text: other purpose, and afterward be replaced, the regenerator or air heating apparatus
being so supported that light is not obstructed by rods, arms or other supports outsido
the flame; also that should the globe be broken the whole of the apparatus will remain
in position.
The burner may be an Argand burner proper with central air supply or be of other
analogous form and be adapted to burn gas as in the arrangement shewn, or to burn
vegetable or mineral oils.
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. In a lamp of the kind above referred to; adapted to be carried by a pedestal
bracket or other support underneath it, the construction and arrangement of parts
substantially as described in such a manner that the regenerator or air heating.
apparatus is supported independently of, and so that no part of its weight rests upon,
either the glass or globe that surrounds or encloses the burner; or any rods, arms, or
other supports so located as to be outside the flame and thereby to obstruct light.
2. In a lamp of the kind above referred to, in which the regenerator or air heating
apparatus is made removable from the burner, providing the one with a socket or cup
and a rod, and the other with a central passage adapted to receive the said rod, and
to rest at its one end on or in the said socket or cup, substantially as herein
described.
3. My improved lamp constructed and arranged substantially as hereinbefore.
described with reference to and shewn in the drawing annexed.
Dated this Twenty covanth,
1000
T. C. J. THOMAS.
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.