Year: 1887

page_text: Date of Application, 29th Aug.. 1887
Complete Left, 28th May, 1888
Complete Accepted, 29th June, 1888
A communication from THOMAS GORDON, of the City of Philadelphia, United States
of America, Mechanical Engineer.
I, EMANUEL STEIN temporarily of the Hotel Victoria, Northumberland Avenue
London, Manufacturer, do hereby declare the nature of this invention to be as
follows
Gas lamps have heretofore been made with a downwardly burning flame to which
the requisite air for combustion has been supplied through pipes or chambers, the
entrance to, or passage within which has been more or less guarded by perforated
plates, gauze, or other devices intended to prevent sudden gusts or draughts of air
from affecting the flame. These devices have been more or less successful with lamps
burning in a room or enclosed space but have not so successfully accomplished their
outside ones.
objects when the lamps have been used as
27
The object of my invention is to so construct a lamp that it may be exposed to
the varying conditions of the atmosphere without exhibiting serious variations in the
flame.
In order ibat the nature of my invention may be understood, let it be assumed that
it is to be applied to a "Gordon Lamp, or one with an annular burner, the centre of
which forms the entrance to the discharge passage for the products of combustion,
said passage continuing up through the centre of the lamp and finally opening to
discharge. At the sides or around said passage preferably at a little distance from it,
or separated by non heat conducting material I arrange one or more tubes opening at
the bottom into the body of the lainp and at the top having suitable air inlets. The
air to support combustion is thus drawn from a point more or less close to the
discharge, and I find by experiment that the flame supplied with air through tubes
arranged as indicated, is more steady and less liable to be affected by gusts of wind
and draughts than that form of lamp in which the air is taken from a point more close
to the burner.
0011 JA 1887
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London,
Applicant's Agent.

page_text: A communication from abroad by THOMAS GORDON, of the City of Philadelphia,
United States of America, Mechanical Engineer.
I, EMANUEL STEIN temporarily of the Hotel Victoria, Northumberland Avenue,
London, 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 :-
Gas lamps have heretofore been made with a downwardly burning flame to which
the requisite air for combustion has been supplied through pipes or chambers, the
entrance to or passage within which has been more or less guarded by perforated
plates, gauze or other devices intended to prevent sudden gusts or draughts of air
from affecting the flame. These devices have been more or less successful with lamps
burning in a room or enclosed space, but have not so successfully accomplished their
objects when the lamps have been used as "outside" ones.
The object of my invention is to so construct a lamp that it may be exposed to
the varying conditions of the atmosphere without exhibiting serious variations in the
flame.
In order that my invention may be clearly understood reference is made to the
accompanying drawings which form part of this specification, and in which :-
Fig. 1 represents a vertical section on line A B of Fig. 2 of a lamp constructed in
accordance with my invention.
Fig. 2 is a horizontal section on lines C D E F of Fig. 1.
Fig. 3 is a horizontal section on line G H of Fig. 1.
In the construction shown A is a gas burner; B is an approximately air-tight
chamber surrounding the burner; C is the escape flue of the burner; D is an air-
tight chamber surrounding the escape flue; E E E are air tubes which connect the
chamber B with the chamber D; F F F are air tubes which extend upwards from
chamber D and which are preferably supplied with lips or bell mouths as shown;
GGG are partition plates which may extend downward within air tubes F; H H are
caps or plates which rest upon, or may be attached to the upper ends of the partition
plates G 1 is a wind cap attached to the escape flue of the burner.
Surrounding flue C, is arranged flue K, which may be ornamented; it is open, top
and bottom, and air is allowed to circulate between said flues (and K, to prevent
radiation of heat from flue to tubes E; also, to prevent the cooling of flue C, by
sudden blasts of cold air. Or instead of an air tube the tube C may be surrounded
by non heat conducting material such as asbestos, slag wool, and other material, or
any or all of the flues or tubes may be constructed of non-conducting material; or,
they may be made of such size as to admit of joints of non-conducting material being
used.

page_text: When the burner is in operation, the waste products pass up through flue C,
producing a draft and causing the cold air to circulate downward through flues or
passages E E, and thence (as shown by the arrows in Fig. 1) through the regenerative
chambers of the burner. The object of this form of construction is, to overcome the
principal difficulty experienced with lamps in which the inlet and outlet are at opposite
ends of the fixture viz., the reversal of the draft in the escape flue, caused by gusts of
wind sweeping past the inlet.
In this form, the inlet and outlet are both at the upper end of the lamp, and as close
together as practicable.
The suction on the inlet is balanced by the arrangement of the partition plates
within tubes F F, as from whatever direction the wind may blow air is taken in on
one side of said plates, to compensate for that which may be drawn out on the other
side.
To facilitate the lighting of the burner, and to prevent the circulation from being
started in the wrong direction I employ a cone L which makes a tight joint with the
chamber B above the air inlet, the top of said cone approaching the edge of the
discharge cone M, so as to form a species of reducing nozzle or injector which dis-
charges through suitable openings around the base of pipe C, and thus tends to create
an up draft through discharge cone M and said escape tube C. To prevent down
gusts of wind in the escape tube, and to maintain an even discharge therefrom and
consequently an even flame with the lamp, I construct the wind cap small enough in
diameter to allow of only about one half of the waste products escaping at the top,
while the rest should pass out at the bottom, as indicated by arrows; this serves to
throttle the suction without impeding the draught, and prevents violent fluctuations of
the flame.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, 1 declare that what I claim is :-
The improvements in gas lamps herein before described which consist in the
combination with the approximately air tight chamber surrounding the burner, of air
tubes leading up to an equalizing chamber, or to the open, at approximately the level
of the discharge in such a manner that the air to support combustion is evenly
supplied to the flame while the products of combustion as evenly pass away, all
substantially as and for the purposes set forth.
Dated this 28th day of May 1888.