Improvements in Chimneys and Globes or Shades for Gas and other Lamps.
Year: 1886

page_text: Date of Application, 3rd Dec., 1886
Complete Left, 3rd Sept., 1887
Complete Accepted, 4th Oct., 1887.
PROVISIONAL SPECIFICATION.
Improvements in Chimneys and Globes or Shades for Gas and
other Lamps.
We ALEXANDER POUTEY KER of the Gas Works Windsor Street, Birmingham,
Civil Engineer, and FRANK SAMUEL GREEN of Rupert Street Birmingham,
Mechanical Engineer do hereby declare the nature of our said invention for
"IMPROVEMENTS IN CHIMNEYS AND GLOBES OR SHADES FOR GAS AND OTHER
LAMPS to be as follows:-
25
The object of this invention is to provide means whereby the heat generated by gas
or oil when being consumed shall ensure the more perfect combustion of the said gas
or oil, thus increasing the illuminating power of any given quantity of the illuminant.
In the case where argand or other similar burners are used, the invention consists
in making the upper part of the glass chimney so that its edge is returned, or bent
inwards and downwards thus forming a vertical or an inverted conical collar with the
opening for the exit of the products of combustion of considerably less diameter than
the rest of the chimney.
For flat flame burners, the glass globe or shade is also made with the upper edge
bent inwards and downwards, leaving a longitudinal slit in the centre of the collar or
inverted cone for the exit of the products of combustion.
In each of the foregoing the improvement is effected by bending the glass into the
form described, but the same result may be produced by a modification in which the
collar or inverted conical part is made separate and removable, of glass, iron, asbestos,
fire-clay, tale, or other suitable refractory material.
gases shall be
In all cases it is necessary that the size of the opening for the effluent
proportioned to the quantity and quality of the gas or oil to be consumed.
By the adoption of chimneys or shades made as described the heated gases arising
from the lighted gas or oil are deflected towards the burner, when in consequence of
the increased heat the combustion becomes more perfect, thus producing an exceedingly
white and brilliant light at a reduced expenditure of illuminating material.
Dated this 3rd day of December 1886.
W. H. BENNETT,
Agent for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Chimneys and Globes or Shades for Gas and
other Lamps.
We, ALEXANDER POUTEY KER of the Gas Works, Windsor Street, Birmingham,
Civil Engineer, and FRANK SAMUEL GREEN of Rupert Street, Birmingham,
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 :-
The object of this invention is to provide means whereby the heat generated by gas
or oil when being consumed shall ensure the more perfect combustion of the said gas
or oil, thus increasing the illuminating power of any given quantity of the illuminant.
In order that the invention may be easily understood drawings are attached hereto
of which the following is a description. Fig. 1 is a sectional elevation of an argand
chimney made in accordance with this invention. Fig. 2 is an argand chimney
showing the improved part made removable. Fig. 3 is a plan of a
globe or shade
with slit opening. Fig. 4 is a sectional elevation of the same. Fig 5 is a similar
sectional elevation with a circular opening at top, and Fig. 6 is a plan of the same.
Fig. 7 is a globe with the top inwardly curved part, made removable, and Fig. 8
represents the invention attached to a reflecting shade.
In the case where argand or other similar burners are used, the invention consists
in making the upper part of the glass chimney A. Fig. 1 so that its edge is returned,
or bent inwards and downwards, thus forming a vertical or an inverted conical collar B
with the opening for the exit of the products of combustion C of considerably less
diameter than the rest of the chimney.
For flat flame burners, the glass globe or shade D Fig. 2 is also made with the
upper edge bent inwards and downwards, leaving a longitudinal slit E Figs. 3 and 4
in the centre of the collar, or inverted cone for the exit of the products of combustion.
Or, instead of a slit a round or oval hole may be made at bottom of the inverted cone
as at F Figs. 5 and 6.
In each of the foregoing the improvement is effected by bending the glass into the
form described, but the same result may be produced by a modification in which the
collar or inverted conical part B Figs. 2 and 8 or as in E Fig. 7 is made separato
and removable, of glass, iron, asbestos, fire-clay, talc, or other suitable refractory
material.
In all cases it is necessary that the size of the opening for the effluent gases shall
be proportioned to the quantity and quality of the gas or oil to be consumed.
By the adoption of chimneys, globes or shades made as described, the heated gases
arising from the lighted gas or oil are deflected towards the burner, when in

page_text: consequence of the increased heat the combustion becomes more perfect, thus
producing an exceedingly white and brilliant light, at a reduced expenditure of
illuminating material.
Having now particularly described and ascertained the nature of our said invention,
and in what manner the same is to be performed we declare that what we claim is
The construction of chimneys, globes, or shades with a top of an inverted cone form
as in Figs. 1, 2, 5, 6, 7 and 8, or as in Figs. 3 and 4, as herein described and shown
on the drawings.