Improvements in Wind Casings for Regenerative Gas Lamps.
Year: 1890

page_text: Date of Application, 18th Feb., 1890-Accepted, 22nd Mar., 1890
COMPLETE SPECIFICATION.
Improvements in Wind Casings for Regenerative Gas Lamps.
I, THOMAS GORDON, of Philadelphia, in the County of Philadelphia, and State of
Pennsylvania, United States of America, Mechanical 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 :-
In the use of inverted regenerative gas lamps provided with a chimney for the
escape of the products of combustion, and inlet tubes for the supply of air to the
flame, it has been noticed that under normal conditions, the chimney draft is sufficient
to draw inward a sufficient quantity of air to support combustion, but that a large
volume of air flowing past the inlets, tends to draw outward the entoring air, and
thus counteracts the chimney draft and causes the smoking of the lamp. It is the
object of my invention to obviate this difficulty, and to that end my present improve-
ment consists in surrounding the burner with an air tight chamber, the inlet tubes
of which are provided with injectors, which deflect the air inward, into the said
chamber, and also in providing the escape flue or chimney with an ejector for
preventing a downward draft therein.
•
In the accompanying drawings in which corresponding parts are designated by
similar letters,
Figure 1 is a vertical section, and Figure 2 is a horizontal section on line C-D
of Figure 1.
In the drawings A is an inverted gas burner of annular form; B is an air
chamber surrounding the burner into which the air flows downward from inlets in
the upper part of the lamp; C designates the escape flue through which the products
of combustion and heated air pass upward to the point of exit; D D represent the
air inlet flues arranged vertically above the said air chamber and around the gas
inlet tubes. At the upper ends of these air inlet tubes are arranged injectors E
which protect the air infets of the chamber B; F is the chimney, the outlet end of
which is protected by an ejector G of any suitable form.
When the lamp is lighted the waste products of combustion will pass upward into
and through the escape flue in the manner known to the outer air, thereby causing
air to flow inward through the air inlet tubes D, D. Under normal conditions, the
chimney draft is sufficient to draw in the amount of air required for combustion, but
in lamps heretofore constructed it has been noticed that a large body of air flowing
past the air inlets causes the air therein to flow outwards, and thus counteracts the
effect of the chimney draft and causes the lamp to smoke. In order to obviate this
difficulty I have placed the injectors E in the air inlets which serve to force the air
inward when the wind blows upon then and bave placed ejector G upon the outer
end of the escape flue, which, when thus applied, serves to maintain the proper and
requisite circulation of air through the lamp and prevent smoking and the clogging
of the chambers.
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 :
1. In an inverted regenerative Gas Burner, the combination of a central escape
flue, an air tight chamber, provided with injectors operated by a current of air
flowing thereby, and a chimney, provided with an ejector, as and for the purposes

page_text: 2. In an inverted regenerative Gas Burner, the combination of a central escape flue
provided with a chimney, an ejector surrounding the chimney, an air tight chamber
surrounding the escape flue, vertical air inlet tubes rising from the air tight chamber,
and air injectors operated by a current of air flowing thereby surrounding the inlets
of the air tubes, as and for the purposes described.
Dated 18th day of February 1890.
ABEL & IMRAY,
Agents for the Applicant.