IMPROVEMENTS IN D
Year: 1857

page_text: LETTERS PATENT to John Sherar, of Aberdeen, in the County of
Aberdeon, N. B., Ironmonger, for the Invention of "IMPROVEMENTS IN
D
PROVISIONAL SPECIFICATION left by the said John Sherar at the Office
of the Commissioners of Patents, with his Petition, on the 23rd March
1857.
I, JOHN SHERAR, of Aberdeen, North Britain, Ironmonger, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN OIL AND
SPIRIT LAMPS, BY THE FORMATION OF BURNERS OBVIATING SHADOW," to be as
follows:-
The outer part of the burner, between which and the centre part of the
burner holding the wick the air passes to support the flame, is made of a
conical shape, and at such a distance from the flame as to allow the rays of
light from the flame passing beneath as well as above this outer part, and
without throwing any shadow therefrom below or round the lamp. The glass
may be supported on a narrow rim or shoulder at the lower end of this
outer part of the burner, the glass being steadied by a support raised from the
centre part or tube of the burner.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Sherar in the Great Seal Patent Office on the 23rd
September 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, T, JOHN
SHERAR, of Aberdeen, in the County of Aberdeen, N. B., Ironmonger, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of March, in the year of our Lord
One thousand eight hundred and fifty-seven, in the twentieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said John Sherar, Her special licence that I, the said John Sherar,.
my executors, administrators, and assigns, or such others as I, the said John
Sherar, 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 Man, an Invention for "IMPROVEMENTS IN OIL AND SPIRIT
LAMPS, BY THE FORMATION OF BURNERS OBVIATING SHADOW," upon the condition
(amongst others) that I, the said John Sherar, my executors or administra-
tors, 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 months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said John Sherar, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed. to be particularly described and ascertained in and by the following
statement :-
The Invention is for improvements in oil and spirit lamps, by the formation
of burners obviating shadow, and is as follows:-The outer part of the
burner, between which and the centre part of the burner holding the wick
the air passes to support the flame, is made of a conical or dome shape, and
at such a distance from the flame as to allow the rays of light from the flamo
passing beneath as well as above this outer part, and without throwing any
shadow therefrom below or round the lamp. The glass may be supported on
a narrow rim or shoulder at the lower end of this outer part of the burner,

page_text: the glass being steadied by a support raised from the centre part or tube
of the burner.
In witness whereof, the said John Sherar has hereunto set his hand and
seal, this Twenty-first day of September, in the year of our Lord One
thousand eight hundred and fifty-seven.
JOHN SIERAR. (L.S.)