AN IMPROVED CONSTRUCTION AND APPLICATION OF SHADES TO GAS LIGHTS
Year: 1868

page_text: LETTERS PATENT to Julius Brönner, of Frankfort-on-the-Maine, in
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the Kingdom of Prussia, Manufacturer, for the Invention of "AN
IMPROVED CONSTRUCTION AND APPLICATION OF SHADES TO GAS LIGHTS."
Sealed the 23rd April 1869, and dated the 31st October 1868.
PROVISIONAL SPECIFICATION left by the said Julius Brönner at the
Office of the Commissioners of Patents, with his Petition, on the
31st October 1868..
I, JULIUS BRONNER, of Frankfort-on-the-Maine, in the Kingdom of
Prussia, Manufacturer, do hereby declare the nature of the said Inven-
tion for "AN IMPROVED CONSTRUCTION AND APPLICATION OF SHADES TO GAS
LIGHTS," to be as follows:-
My Invention consists in so constructing a shade that when applied
to a gas light the jet shall burn at a certain regulated distance from a
vertical or nearly vertical plane, the expansion of the flame being
parallel therewith.
The effect of this construction and arrangement is, that this flat
vertical side of the shade becoming heated a perpendicular current of
[Price 8d.]

page_text: hot air is produced steadying the flame and doing away with the
wavering so injurious to the eye and to which the flame from batswing
and fishtail burners is especially subject.
On the accompanying Sheet of Drawing forming part of this my
Provisional Specification I bave shown two shades constructed and
applied according to my Invention, both drawn half size; Figs. 1 and 4
being longitudinal sections at A, B, Figs. 3 and 6; Figs. 2 and 5
transverse sections, and Figs. 3 and 6 plans of same.
It will be observed that the relative proportions of body and chimney
differ in the two shades, that shown Figs. 1 to 3 having a
elliptical front and a slightly angular back.
a, a, vertical plane of body of shade; b, b, continuation of vertical
plane in chimney; c, sloping front of body; d, front of chimney; e,
bracket, one end of which screws on to the gas burner, the other end
passing into the socket f. The length of this piece regulates the
distance of the flame from the vertical plane a, a, and its curvature the
different level between the bottom of the shade and the top of the
burner.
My improved shade may be made of tin or any suitablo metal or
material, and the relative proportion and the shape of its various parts
be modified according to requirement consistent with the expansion of
the flame being parallel with and in closer proximity to a vertical or
nearly vertical side than to the sloping side or sides of the shade.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Julius Brönner in the Great Seal Patent Office on
the 24th April 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JULIUS
BRONNER; of Frankfort:on-the-Maine, in the Kingdom of Prussia,
Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirty-first day of October, in the
year of our Lord One thousand eight hundred and sixty-eight, in the
thirty-second year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Julius Brönner, Her special
licence that I, the said Julius Brönner, my executors, administrators,

page_text: and assigns, or such others as I, the said Julius Brönner, my executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Mau, an Invention for "AN IMPROVED
CONSTRUCTION AND APPLICATION OF SHADES TO GAS LIGHTS," upon the condition
(amongst others) that 1, the said Julius Brönuer, my executors or
administrators, by an instrument in writing under my, or their, or one
of their hands and seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar mouths next and immediately after the date of
the said Letters Patent.
NOW KNOW YE, that I, the said Julius Brönner, do hereby declare
the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by
the following statement, reference being had to the accompanying
Sheet of Drawing, and to the figures and letters of reference placed
thereon, similar letters denoting similar parts where such parts appear
or may be seen in each of the Figures respectively:
My Invention consists in so constructing a shade that when applied
to a gas light the jet shall burn at a certain regulated distance from a
vertical or nearly vertical plane, the expansion of the flame being
parallel therewith.
The effect of this construction and arrangement is, that this flat
vertical side of the shade becoming heated a perpendioular current of
hot air is produced steadying the flame and doing away with the
wavering so injurious to the eye and to which the flame from batswing
and fishtail burners is specially subject.
forming part of this my
constructed and applied
On the accompanying Sheet of Drawing
Specification I have shown two shades
according to my Invention, both drawn half size; Figs. 1 and 4 being
longitudinal sections at A, B, Figs. 3 and 6; Figs. 2 and 5 transverse
sections, and Figs. 3 and 6 plans of same.
It will be observed that the relative proportions of body and chimney
differ in the two shades, that shown Figs. 1 to 3 having a more
elliptical frout and a slightly augular back.

page_text: à, a, vertical plane of body of shade; b, b, continuation of vertical
plane in chimney; c, sloping front of body; d, front of chimney; e,
bracket, one end of which screws on to the gas burner the other end
passing into the socket f. The length of this piece regulates the
distance of the flame from the vertical plane a, a, and its curvature the
different level between the bottom of the shade and the top of the
burner.
Having now described and ascertained the nature of my said Inven-
tion, and in what manner the same is carried into practical effect, I
would have it distinctly understood that my improved shade may be
made of tin or any suitable metal or material that the relative pro-
portion and the shape of its various parts may be modified according
to requirement consistent with the expansion of the flame being
parallel with and in closer proximity to a vertical or nearly vertical side
than to the sloping side or sides of the shade; and that I claim, the use
of a shade for gas lights having a vertical or nearly vertical side in
connection with the gas burner by a regulating bracket or its equivalent,
substantially as and for the purpose herein set forth.
In witness whereof, I, the said Julius Brönner, have hereunto set
my hand and seal, this Twenty-first day of April, in the year of
our Lord One thousand eight hundred and sixty-nine.
JULIUS BRÖNNER. (L.s.)