Improvements in Regenerative Gas Lamps.
Year: 1892

page_text: Date of Application, 29th Nov., 1892
Complete Specification Left, 24th Aug., 1893-Accepted, 18th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in Regenerative Gas Lamps.
I WILLIAM WHITE of 18 Buckingham Street, Strand W.C. London Civil
Engineer do hereby declare the nature of this invention to be as follows:-
This invention relates to regenerative gas lamps and more especially to those
intended to be used upon brackets or standards or otherwise supported upon bases
below them in place of being suspended from above.
The invention contemplates an improved method of and means for controlling
and directing the air admitted into the lower part of the glass globe, also a method
of supplying air within the rim of the globe from above and a method of securely
centering the regenerator with glass or other funnel over the burner.
In this lamp a globe is employed substantially hemispherical in shape and
having a simple opening preferably circular and of convenient width in its base.
This globe rests upon a flange provided upon the exterior of a cylindrical fitting
hereinafter described, the purpose of which is to support the globe and to heat the
air entering through the fitting and direct it laterally or radially so that while
entering more or less warmed, it may nevertheless form a substantially cooler layer
of air between the flame and the glass before it eventually feeds the flame. A
washer or washers of asbestos is or are inserted between the globe and the flange
on which it rests.
The fitting aforesaid projects above and below the flauge; above the flange it is
cylindrical and may have a notched or serrated edge or rim or it may be perforated
around its circumference while closed with an unperforated disc at the end, below
the aforesaid flange, the fitting may also project cylindrically it being also there
provided with perforations in its walls for admission of air. The interior of the
fitting, which is hollow, contains a diaphragm or diaphragms of wire gauze, pierced
metal or equivalent perforated disc or discs.
The tube which supplies gas to the burner will preferably pass upward vertically
through the centre of this fitting and project to the desired distance above the
uppermost disc of the fitting.
The burner which may have a circumferential ring of holes or slots is provided
on its upper side with a perpendicular annular flange of considerable height and
small diameter forming a socket which will project well within the regenerator to
receive and hold a pin either fixed centrally within the latter or consisting of a
simple extension of the regenerator itself. This method of maintaining the central
position of the regenerator allows the latter, which rests on the rim of the glass
globe, to be easily and expeditiously placed in proper position after the lamp is
lighted, and prevents it falling off when the bracket, standard or other fitting is
moved.
The regenerator may be of any suitable kind being preferably cast with a flange
which rests upon the glass and which is provided with a ring of small holes by
which air can pass direct from the outside into the inside of the glass in a downward
direction within its upper edge.
The air entrances to the regenerator are around the periphery of the latter and
are guarded by a corrugated piece of metal wrapped round the regenerator, the
said piece of metal having the corrugations running horizontally around the
regenerator and being moreover serrated along its upper and lower edges.
The chimney which surmounts the regenerator is preferably made of glass or
similar transparent or translucent material and its lower edge rests in a grooved
ring of metal lined with asbestos or other nonconductor of heat; this grooved ring
of metal fits within a perpendicular flange on the upper face of the regenerator,

page_text: or the grooved ring may be formed as a fixture by adding a second perpendicular
flange within the outer one just described. The chimney is secured by a perforated
cover and central perpendicular rod or rod and nut in the known manner.
The nut or equivalent at the centre of the top of the chimney is made with two
eyes or passage ways, one of these is intended to receive a chain attached to the
chandelier, bracket or other fitting on which these lamps are used, so that the
chimney and regenerator when removed from the lamp may be suffered to hang
suspended, so that in their heated state they may do no damage to any
surroundings, the other hole or eye is to receive a hook or equivalent imple-
ment by which the chimney and regenerator may be lifted from or replaced in the
lamp.
Dated this 29th day of November 1892.
R. HADDAN,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Regenerative Gas Lamps.
I WILLIAM WHITE of 18 Buckingham Street Strand W.C. London, Civil
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 relates to regenerative gas lamps and more especially to those
intended to be used upon brackets or standards or otherwise supported upon bases
below them in place of being suspended from above.
The invention contemplates an improved method of and means for controlling
and directing the air admitted into the lower part of the glass globe, also a method
of supplying air within the rim of the globe from above and a method of securely
centering the regenerator with glass or other funnel over the burner.
In this lamp a globe is employed substantially hemispherical in shape and having
a simple opening preferably circular and of convenient width in its base. This
globe rests upon a flange provided upon the exterior of a cylindrical fitting herein-
after described the purpose of which is to support the globe and to heat the air
entering through the fitting and direct it laterally or radially so that while entering
more or less warmed it may nevertheless form a substantially cooler layer of air
between the flame and the glass before it eventually feeds the flame.
A washer or washers of asbestos is or are inserted between the globe and the
flange on which it rests.
The fitting aforesaid projects above and below the flange, above the flange it is
cylindrical and may have a notched or serrated edge or rim, or it may be perforated
around its circumference while closed with an imperforated disk at the end; below
the aforesaid flange the fitting may also project cylindrically it being also there
provided with perforations in its walls for admission of air.
The interior of the fitting, which is hollow, contains a diaphragm or diaphragms,
of wire gauze, pierced metal or equivalent perforated disk or disks.
The tube which supplies gas to the burner will preferably pass upward vertically
through the centre of this fitting and project to the desired distance above the
uppermost disk of the fitting. The burner which may have a circumferential slot or
ring of holes is provided on its upper side with a perpendicular annular flange of
considerable height and small diameter forming a socket which will project well
within the regenerator to receive and hold a pin either fixed centrally within the
latter, or consisting of a simple extension of the regenerator itself. This method
of maintaining the central position of the regenerator allows the latter which rests
on the rim of the glass globe to be easily and expeditiously placed in proper position
after the lamp is lighted and prevents it falling off when the bracket, standard or
other fitting is moved or if the lamp glass should be broken.

page_text: The regenerator may be of any suitable kind being preferably of cast metal and
provided with a flange which rests upon the glass and which is provided with a
ring of small holes by which air can pass direct from the outside into the inside of
the glass in a downward direction within its upper edge.
The air entrances to the regenerator are around the periphery of the latter and
are guarded by a corrugated piece of metal wrapped round the regenerator, the
said piece of metal having the corrugations running horizontally around the
regenerator and being moreover serrated along its upper and lower edges.
The chimney which surmounts the regenerator is preferably made of glass or
similar transparent or translucent material and its lower edge rests in a grooved
ring of metal lined with asbestos or other non conductor of heat.
This grooved ring of metal fits within a perpendicular flange on the upper face
of the regenerator or the grooved ring may be formed as a fixture by adding a
second perpendicular flange within the outer one just described.
The chimney is secured by a perforated cover and central perpendicular rod or
rod and nut in the known manner.
The nut or equivalent at the centre of the top of the chimney is made with
two eyes or passage ways, one of these is intended to receive a chain attached to
the chandelier, bracket or other fitting on which these lamps are used so that the
chimney and regenerator when removed from the lamp, may be suffered to hang
suspended so that in their heated state they may do no damage to any surroundings,
the other hole or eye is to receive a hook or equivalent implement by which the
chimney and regenerator may be lifted from or replaced on the lamp.
In the annexed drawing
Fig. 1 is an elevation of the lamp.
Fig. 2 a plan view of the regenerator as seen from below.
Fig. a vertical section of the lamp on the line 3. 3. Fig. 2 the left half being a
central section.
Fig. 4 is a partial plan view of the metal ring or plate surrounding the
regenerator and Fig. 5 is a side elevation of a piece or strip of such ring or plate.
Fig. 6 shows a suitable tool for removing the regenerator and chimney when
lighting the lamp.
A represents the burner at the summit of the gas feed pipe B which passes
through the centre of the cylindrical fitting C the flange D of which supports the
glass globe E which rests upon the washer F on the flange. The lower end of the
fitting C is made to screw onto or in the usual nozzle of a gas bracket,
chandelier or the like, and above the screw threaded portion the fitting is
cylindrically hollowed out but to retain the flange C¹ in its centre or an equi-
valent flange to carry the wire gauze or equivalent diaphragms G. Below the
diaphragms and below the flange D are holes H in the wall of the fitting, and
above the diaphragms and above the flange D are the holes H' which can be made
if desired by recessing the upper edge of the cylindrical wall. The space within
the cylindrical fitting C is closed above by the cover disk J through which the gas
tube B passes.
The regenerator illustrated is of that form in which the air is supplied through
radial passages K to a central chamber K¹ while the products pass upwards in the
intervals K2 between the walls of the said passages, and the incoming air is kept
separated from the products by a downwardly directed cylindrical flange surrounding
the central air chamber which is open below. This regenerator with its flange is
generally made in one piece of cast metal. For the sake of lightness the plate L
which rests upon the upper edge of the glass globe E and carries the regenerator
and chimney, the weight of which parts is therefore borne by the glass, is
preferably made of stamped thin metal such as copper, and with the interior air
deflecting flange M similarly made is secured to the flange K³ on the regenerator.
The flange K is also formed on the regenerator to receive and centre the annular
channelled ring N which is lined with asbestos and serves to receive the lower edge
of the tapered chimney O preferably made of opal glass.

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page_text: channelled ring securing within an exterior flange on the regenerator or placed
between an inner and outer flange thereon with or without intervention of said
channelled ring.
6. The combination with a regenerator having exterior air entrances, of a strip
of sheet metal wound about said regenerator having corrugations in the direction
of its length or circumference and serrated edge or edges substantially as and for
the purpose described.
7. The combination of a removable regenerator, a rod rising therefrom, a
chimney fitted on said regenerator, a spider on the upper end of said chimney
traversed by said rod, and a nut adapted to secure said spider, the said nut having
two eyes V. V for the several purposes set forth.
8. The combination with a regenerator having a flange adapted to rest upon the
upper rim of a glass globe and air inlets arranged at said flange through a series of
holes arranged and made substantially as herein described, the said regenerator,
having also a central air chamber as described; of a glass globe supporting said
regenerator and a fitting at the base of said globe, whereby the several currents
of heated and cold air are caused to enter and flow within the lamp in the directions
and manners herein before set forth.
9. The construction of regenerative gas lamp as a whole substantially as herein
described and illustrated.
Dated this 21th day of August 1893
R. HADDAN,
Herbert Haddan & Co.,
18, Buckingham Street, Strand, London, Agent for Applicant.