Year: 1888

page_text: Date of Application, 11th Apr., 1888
Complete Specification Left, 21st Nov., 1888
Complete Specification Accepted, 31st Dec., 1888
I HENRY VALE of Graskeller No. 21, Hamburg in the Empire of Germany,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
:-
The improved lamp belongs to that class in which a preliminary heating is given to
the atmospheric air conducted to the burner by the escaping heated vapours, products
of combustion.
The burner consists of one piece of cast metal screwed into an annular hollow body
which receives the gas through a feed tube. The fresh air enters from outside between
two concentric domes into the lamp, ascends between the said domes and passing over
the upper rim of the inner dome or mantle descends through a suitable number of
circularly arranged parallel tubes surrounded by the escaping heated gases of com-
bustion or through a ribbed body heated by the said gases of combustion to that part
of the burner whence the illuminating gas issues. Here the previously heated air
mixes with the gas and produces a vivid Hame when the latter is lighted.
The hollow body surrounding the burner forms an annular hollow space from out of
which the gas escapes downwardly through vertical bores in the burner. The
latter terminate above in an annular groove provided in the wall of the burner,
while below at the escape orifice each bore terminates in a small annular projection
or conc.
The air reaches the flame through perforations in the bottom of the burner, near
each outlet orifice thereof.
The flame is enclosed in a glass globe by which the lamp is closed from below.
The heated gases of combustion ascend through a central chimney.
If the lamp is intended to serve for street lighting or to be used in the open air the
glass globe is surrounded by a second glass globe for the purpose of protecting the
inner globe from sudden cooling whereby it would be cracked or broken. The
fresh air passes through an opening in the lower part of the outer globe into
the lamp.

page_text: The lamp may be suitably lighted by means of an auxiliary flame for instance
a jet flame passing through the wall of the chimney so that after the main
gascock has been opened the gas escaping through the chimney may be inflamed by
said jet.
COMPLETE SPECIFICATION.
Improvements in Gas Lamps having Heated Air Feed.
I HENRY VALE, of Ferdinand strasse 27 Hamburg in the Empire of Germany,
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:-
This invention relates to gas lamps in which the entering air for feeding the burner
is heated by the outgoing products of combustion, and it consists in the improvements
in the construction of such lamps hereinafter described and claimed, reference being
made to the accompanying drawings, in which, Fig. 1. is a vertical central section of
a lamp fitted with the improvements, Fig. 2 a plan view from below of the burner
thereof, and Fig. 3 is a cross section on line a x Fig. 1.-Fig. 4 being a modified
form with improvements more suitable for street or outdoor lamps, Fig. 5 a cross
section on line 3. 4 thereof, Fig. 6 a cross section on line 1. 2.
The gas burner, air ducts etc. near, thereto and gas feed chamber for the burner aro
constructed as follows; A is a casting comprising in one piece an annular cylindrical
portion forming the inner wall of the gas chamber and having an annular groove r
around its outer face, and having in its mass, below. said groove a number of bores i
terminating above in said groove and debouching below along the lower rim of the
annular portion, preferably through small conical or cylindrical nozzles; and a
spreading portion at the lower outer face of said annular portion, connected thereto
by a web perforated with a number of holes & preferably each adjacent to one of the
gas bores i, and terminating outwardly in a flange t to be bolted to the dome which
directs or forms the outer wall of the downward air feed duct, so that the said
spreading portion forms a cover below said dome to direct the air feed to the holes b,
or that portion of the air supply which does not pass down within the annular portion
aforesaid The said annular portion is screw threaded on its outer face at e and e¹ to
receive the second portion B which is an annular body spreading outward at the

page_text: centre and screw threaded on its rims to screw onto the body A ate and e' aforesaid
and so complete or enclose and form with the upper part of the annular portion of
the latter, the gas chamber which supplies the bores i. The inner wall of the inner
air feed passage is formed by the lower part of the chimney k.
The dome n, bolted to the flange t, extends upwards and is connected to the upper
part of the chimney by a re-entering portion perforated at intervals for receiving the
ends of the pipes o which extend downward to a cross partition in said dome,
centrally perforated for attachment of the lower part of the chimney, and also
perforated for reception of the lower ends of the pipes o-The upper part of said
dome therefore forms a chamber for the products of combustion and the pipes o
passing through the same are thereby heated; the air for feeding the flame passing
down through said pipes into the lower part of the dome n which forms an air
chamber heated also by the chimney .-The dome n may be enclosed by a bell shaped
dome m connected above to the chimney and open below. The gas feed pipe p may
pass down through one of the pipes o to the burner chamber as shown. The globe Ğ
is connected n the known manner. It is preferable that the groover be cut or trued
up in a lathe so that it be perfectly even for the regulation of the passage of gas to
the bores i.
+
The construction may be modified as shown in Figs. 4 to 6-in which the pipes o
are dispensed with; the upper part of the dome n is connected to a portion of the
central chimney by webs 7, being preferably cast in one piece with said webs and
portion of the chimney-Furthermore to utilize the heat of the globe G and to
protect the same against sudden cooling especially for outdoor lamps, an outer
globe G is fixed in the usual manner to the base of the dome m, said globe being
open below at w for entrance of air-The lamp here shown being arranged to be
supported from below, is provided with the two arms F F which enclose and conceal
the gas speed pipes p.
To enable such a lamp to be lighted without opening the glass globe or globes and
yet dispense with a continuously burning flame for this purpose, a small burner I is
provided near to the chimney and above the latter is a second burner y. opposito to a
hole in the wall of the chimney and adapted when lighted to throw a flame into the
chimney. These two burners may be fed by one of the gas pipes p provided with
cock, the other gas pipe pl feeding the main burner of the lamp and provided
with cock. The cock being turned on the burner g is lighted by hand and
this lights the burner y; the latter lights the main burner by igniting the gas
escaping up the chimney-When the burner is lighted, the burners y and g. may be
turned out.
There may be formed in the chimney as a continuation of the ribs q, projecting
ribs q' for the better conduction of the heat.
A shade should be placed over the upper end of the chimney of this lamp to
protect the same from rain or gusts of wind.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is ;
In regenerative gas lamps.
1). A burner consisting of the part A being an annular body having groove on
its outer face and bores i in its mass extending from said groover to its lower rim,.
together with a spreading portion integral with said annular body, with perforations b
and flange t therein; in combination with the part B being an annular chambered
portion fastened upon the body A for the purpose described.
2). A burner consisting of the part A being an annular body having an annular
groove around its face and bores in its mass extending downward from said groove
and debouching in projecting nozzles at the lower rim of said body, a screw thread e¹
on the upper rim of said body, a screw thread e below the groove on said body and
a spreading portion integral with the lower part of said annular body, a flange on
the outer edge thereof and perforations bin said spreading part; in combination with

page_text: a hollow annular body B threaded to engage on the threads e and e¹ and form a gas
chamber to said burner substantially as set forth.
3). The combination with a burner having an annular gas chamber and annular
air ducts inside and outside of said burner; of a dome n the lower portion of which
forms an air chamber in communication with said ducts, and the upper portion of
which forms a chamber for the products of combustion, with chimney k and pipes o
substantially as illustrated and described.
4). The combination with a burner having an annular gas chamber and annular
air ducts inside and outside of said burner of a dome n ribs q integral with said
dome and a cylindrical portion integral with said ribs and forming a portion of a
central chimney substantially as set forth.
5). The combination with the dome n ribs q and cylindrical portion supported by
said ribs of the inner projecting ribs q' integral with the dome, ribs and cylindrical
portion aforesaid substantially as and for the purpose set forth.
;
6). The combination with a regenerative lamp having a shade G of a dome mand
an outer shade G¹ connected to said dome, and an orifice in the base of the shade G¹
for the admission of air into the lamp substantially as set forth.
7). A chimney having a lateral orifice in combination with a burner y to project a
'flame into said orifice, and a burner g to be lighted by hand to light said burner y for
the purpose set forth."
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