Improvements in Regenerative Gas Lamps.
Year: 1891

page_text: Date of Application, 13th May, 1891-Accepted, 27th June, 1891
Improvements in Regenerative Gas Lamps.
I ALEXANDER OGILVIE BROWN of 27 Holyrood Quadrant Glasgow in the
County of Lanark North Britain Gas 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:-
My invention which relates to improvements in regenerative gas lamps belongs
to that class of lamps in which the waste gases or products of combustion are
drawn through a central opening or chimney.
с
The air necessary for combustion enters at the lower end of a dome or outer
covering where any sudden and direct currents of cold air are intercepted by a
cylinderical partition which tends to cause the currents of air to ascend and fill the
interior of the said dome or covering. These currents of cold air become initially
heated within the said dome or outer covering where they become divided and in
this state are drawn through air ducts, the ascending currents enter near the top of
the dome and the descending through ducts or air passages formed around a
circular horizontal partition plate which divides the lamp into an upper & lower
compartment. The descending air after becoming further heated is lead into a hot
air chamber from which it is caused to pass through other ducts or annular
passages formed adjacent to and surrounding the lower interior of the regenerative
gas chamber, whence it finally issues and impinges on the outer and underside of
the flame, while the ascending air, flowing round the outside of the chimney, passes
down to and feeds the top or inside of the flame. The regenerative gas chamber
is an annular chamber formed partly above and partly below the hereinbefore men-
tioned partition plate and surrounds the lower end of the central opening or
chimney hereinafter referred to. The interior of the regenerative gas chamber is
divided by a vertical partition plate in which are formed annularly ducts for
breaking up the gas into fine jets suitable for more perfect combustion.
regenerative gas chamber terminates by a downward extention into a burner which
is pierced with holes as is well understood. Gas is supplied to the chamber by
two gas pipes in the usual manner. The central opening or chimney which
forms no part of my said invention consists in its lower extremity of a tube or
cylinder formed of porcelian or other fire resisting material held in position by
the well known bayonet joint, and terminates in a flanged end for giving to the
flame the desired shape. The chimney proper consists of an intermediate tube
provided near its top with eyes or lugs for clamping the gas supply pipes and
this again is enclosed by another tube terminating in an ornamental top.
The
The lower part of the lamp is enclosed by a glass globe suitably provided with
hinged joint and lock as is usual for giving egress to the lamp interior. To enable
my invention being better understood I have hereunto appended one explanatory
sheet of drawing.
Reference letters indicate parts hereinafter referred to as follows:
A, represents the upper and B, the lower compartments of the lamp. A', the
dome or outer covering with its trumpet shaped mouth for admitting air as
indicated by the arrows C, is a baffle plate or cylinderical partition for checking
any sudden and direct ingress of cold air D is the regenerative gas chamber and
9, 9', represent the two pipes for supplying it with gas. The ends of the two
pipes are screwed into the said chamber D. In practice I have found that one
pipe is of itself sufficient for this purpose, but to give symmetry as well as stability
to the lamp I employ two.
The one marked ', terminates in a tube g2 of very small bore which performs
the function of a pilot light when the lamp is not in use H and H' are hot air

page_text: chambers represents the ducts or passages at which the air enters and d the
orifices or annular openings at which it escapes to the outer and underside of the
flame. The said ducts b, may be drilled but usually I cast them with the plate B¹
varying the shapes either circular, square rectangular or elliptical to obtain various
results in illumination... The hot air essential for feeding the flame.at the point of
ignition passes downward from the top of the dome A', through the opening, into
the chamber F and is intensly heated from the chimney by the products of com-
bustion. The gas in the regenerative chamber D is divided into thin streams by
being made to pass through orifices e, formed in the vertical partition plate D' and
finally issues through jets which constitute the burner of the lamp. E is the
lower portable end of the chimney held in situ by a bayonet joint e'. This com-
municates with the intermediate section E and this again with E. The waste
gases passing up therethrough as indicated by arrows G is a glass globe con-
stituting the lower compartment as is ordinarily employed.
Having now particularly described and ascertained the
tion and in what manner the same is to be performed I
claim is
nature of this inven
declare that what I
1st. In a regenerative gas lamp the combination of three distinct air heating
chambers, (two of these air heating chambers are enclosed within and are con-
stituted by the deflector,) the said chambers perform a two fold function wiz. heating
the inflowing air and deflecting the light produced the flame of which is in the
shape of a tulip so formed by the greater inflowing air forcing the gas inward and
the lesser current, heated by the chimney, forcing it again outward, passing it over
and under a flanged tube and up a central chimney.
2nd. In combination with the said air heating chambers a regenerative gas
chamber divided by a vertical partition plate provided with holes through which
the gas is broken up into small streams before issuing through the burner proper
substantially as and for the purposes hereinbefore described and shewn upon the
accompanying drawings.
Dated this 12th day of May 1891.
ALEXANDER OGILVIE BROWN.