IMPROVEMENTS IN LAMPS
Year: 1874

page_text: LETTERS PATENT to George Grainger Tandy, of Penge, in the
County of Surrey, Gentleman, and John Andrews Dryden, of
Battersea, in the same County, Lamp Maker, for the Invention of
"IMPROVEMENTS IN LAMPS."
PROVISIONAL SPECIFICATION left by the said George Grainger
Tandy and John Andrews Dryden at the Office of the Com-
missioners of Patents, with their Petition, on the 27th January
1874.
We, GEORGE GRAINGER TANDY, of Penge, in the County of Surrey,
Gentleman, and JOHN ANDREWS DRYDEN, of Battersca, in the same
County, Lamp Maker, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN LAMPS," to be as follows:—
Our Invention relates to that description of lamp which is generally
known as outside lamps, and are usually employed for illuminating

page_text: shop fronts, and are supported from a bracket connected with the facia
of the shop front.. These lamps have heretofore been supplied with gas,
which has been the illuminating medium; but there are many sites,
such as in country places where gas cannot be obtained, and it is to
such places that our improvements are more particularly applicable, as
instead of gas as the illuminating medium we employ a liquid hydro-
carbon, which is capable of being burned in a lamp constructed for the
purpose.
In carrying out our Invention we construct the oil reservoir in the
form of a long flat vessel, which is made to fit close to the lower part of 1
the reflector to which it is temporarily fastened in any convenient
manner, so that it can be easily detached when required. From about
the middle of this oil reservoir projects a horizontal tube, which carries
at its outer end a socket prepared to receive the burner, which fits air-
tight into it, so that the oil flows from the reservoir along the
horizontal tube to the burner, and is consumed in the ordinary manner.
The gaseous products of combustion escape from the glass chimney up
a flue to be attached to the casing or lantern, and pass off into the
atmosphere. The back of the casing is made in the form of a double
reflector, and the front part is constructed of a metal framework, which
receives glass panels which form the front, bottom, and sides of the
casing.
The lamp complete is suspended from a bracket and bent rod, but
this latter need not be tubular as if gas were used.
m
- ha contorted into oil lamna h
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Grainger Tandy and John Andrews Dryden
in the Great Seal Patent Office on the 27th July 1874.
g

page_text: JOHN ANDREWS DRYDEN, of Battersea, in the same County, Lamp
Maker, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of January, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said George Grainger Tandy and John
Andrews Dryden, Her special licence, that we, the said George
Grainger Tandy and John Andrews Dryden, our executors, adminis-
trators, and assigns, or such others as we, the said George Grainger
Tandy and John Andrews Dryden, our 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 Man, an Invention for "IMPROVEments In Lamps," upon the
condition (amongst others) that we, the said George Grainger Tandy
and John Andrews Dryden, our executors or administrators, by an
instrument in writing under our, 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 months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said George Grainger Tandy, on behalf
of myself and of the said John Andrews Dryden, do hereby declare the
nature of our 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 Drawing hereunto
annexed, and to the letters and figures marked thereon (that is to
say):-
Our Invention relates to that description of lamp which is generally
known as "outside lamps" and which are usually employed for illumi-
nating shop fronts, and are supported from a bracket connected with the
facia of the shop front. These lamps have heretofore been supplied
with gas, which has been the illuminating medium; but there are many

page_text: sites (such as in country places) where gas cannot be obtained, and it is.
to such places that our improvements are more particularly applicable, as
instead of gas as the illuminating medium we employ a liquid hydro-
carbon, which is capable of being burned in a burner constructed for
the purpose.
In the accompanying Drawing we have shewn the mode we prefer of
carrying out our Invention.
5
Fig. 1 is a front elevation, and Fig. 2 a vertical section of one of our
improved outside lamps, in which it will be seen that we construct the
oil reservoir a in the form of a long flat vessel, which is made to fit close 1
to the lower part of the reflector b, to which it is temporarily fastened
in any convenient manner, so that it can be easily detached when
required. From about the middle of this oil reservoir projects a
horizontal tube c, which carries at its outer end a socket d prepared to
receive the burner e, which may be constructed in any of the well-known
manners suitable for burning liquid hydrocarbons. The stem of the
burner is made to fit air-tight into the socket d, so that the oil cannot leak
out therefrom, but will be made to flow from the reservoir a along the
horizontal tube c to the burner e, where it will be consumed in the
ordinary manner. The gaseous products of combustion escape from the
glass chimney f up a flue tube g attached to the casing or lantern, and
pass off into the atmosphere. The back of the casing i, , is made in
the form of a double reflector, and the front part of the casing consists
of a metal framework constructed to receive glass panels which form the
front, bottom, and sides of the casing.
The lamp complete is provided outside with a socket h¹, Fig. 2,
whereby it can be suspended from a bracket and bent rod (not shewn in
the Drawing), but this latter need not be tubular, as must necessarily be
the case when gas is used.
The ordinary outside gas lamps may be converted into oil lamps by
removing the gas burner, and substituting for the same the oil reservoir
with the burner and other fittings constructed and arranged in the
manner above explained.
Having now described our Invention of "Improvements in Lamps,"
and having explained the manner of carrying the same into effect, we

page_text: claim as the Invention secured to us by Letters Patent as aforesaid,
constructing and arranging "outside lamps" for burning liquid hydro-
carbons, as herein set forth.
In witness whereof, I, the said George Grainger Tandy, have
hereunto set my hand and seal, the Twenty-fifth day of July,
in the year of our Lord One thousand eight hundred and seventy-
four.