IMPROVED SHADOWLESS LAMPS
Year: 1868

page_text: LETTERS PATENT to Edwin Jones, of 128, Redcliffe Street, in the
City and County of Bristol, for the Invention of "IMPROVED
SHADOWLESS LAMPS."-A communication from abroad by Peter
Langwill and Matthew. Craig, of 12, Collins Street, Melbourne,
Australia.
PROVISIONAL SPECIFICATION left by the said Edwin Jones at the
Office of the Commissioners of Patents, with his Petition, on the.
23rd May 1868.
I, EDWIN JONES, of 128, Redcliffe Street, in the City and County of
Bristol, do hereby declare the nature of the said Invention for." IMPROVED
SHADOWLESS LAMPS," to be as follows:-
By this Invention the oil vessel being removed from under the burner
to a considerable distance on one side the shadow cast by the lamps as.
now made is done away with. This is accomplished by having a large
oil reservoir at some distance on one side (say a foot or eighteen inches.
from) and level with or above the level of the burner; from this reservoir

page_text: the wick in the burner is supplied with oil in the quantity requisite to
keep the flame at the desired height. By this arrangement the reflectors
now used can be done away with, and instead of darkening the room by
diverting the rays of of light from their proper course and throwing them
downwards to obliterate the shadow they will be allowed to illuminate
the whole of the room. With chandeliers reflectors cannot be used, the
shadows of the oil vessels consequently falling in patches on the floor.
The advantage of having billiard lamps without this shadow need not
be enlarged upon. This system can be applied to chandeliers, billiard
lamps, bracket lamps, reading lamps, workman's lamps, hall lanterns,
hanging or cabinet lamps, table lamps, and all others. These lamps.
can be used with either flat or round wicks, are self-regulating, can be
trimmed as easily as those at present in use, are not liable to get out of
order, and it is believed that the cost of construction will not exceed
present rates..
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Edwin Jones in the Great Seal Patent Office on
the 23rd November 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, F, EDWIN
JONES, of 128, Redcliffe Street, in the City and County of Bristol, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of May, in the
year of
our Lord One thousand eight hundred and sixty-eight, in the thirty-
first year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Edwin Jones, Her special licence
that I, the said Edwin Jones, my executors, administrators, and
assigns, or such others as I, the said Edwin Jones, 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 "IMPROVED
SHADOWLESS LAMPS," a communication to me from abroad by Peter
Langwill and Matthew Craig, of 12, Collins Street, Melbourne,

page_text: Australia, upon the condition (amongst others) that I, the said Edwin
Jones, 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 months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Edwin Jones, 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:-
I proceed to describe the Invention by reference to the accompanying
Drawing.
Instead of the reservoir now used a small vessel is substituted made
in any shape (marked G in the accompanying Drawing), sufficiently
large to allow the wick to move freely in it. At or near the bottom of
this vessel is attached an oil pipe marked E in the Drawing; this pipe
is connected with the lower part of the larger reservoir marked A; tho
reservoir A has a supply hole and air-tight cover marked B. The pipe E
has a tap marked F placed as shewn in the Drawing, or may be put in
any other part of the pipe. Attached to the vessel G is an air pipe
marked C, which is joined to G at the place where it is desired that
the oil in the vessel G shall ascend to. The other end of the air
pipe C is joined on to the vessel A at or near the top and extend the
air pipe C through a hole in the top of A, which hole is larger in
diameter than the air pipe. At the top of A and over and around the
air pipe C a cap or cover D is fixed so as to allow the air to pass out of
the pipe C into the vessel A as indicated by the arrows.
The action of the lamp is as follows:-First turn off the tap F, unscrew
the cap B, and fill the reservoir A with the fluid intended to be burned;
then screw on the cap B air-tight; next open the tap F, the fluid will
then pass from the vessel A along the tube E into the vessel G, in
which it will ascend until it covers the mouth of the air pipe C, as shewn
by the dotted line in the vessel G. A burner similar to those in use
having been fixed on or into G by screwing or otherwise, and a wick
inserted the lamp may be lit, and as the oil or fluid in G is consumed
its level will fall below the mouth of the air pipe C and allow air to

page_text: pass up C into A, thus allowing a small quantity of air or fluid to pass
out of A along the pipe E into the vessel G until the mouth of the
pipe C is closed by the oil or fluid; the consumption still going on the
level of the oil or fluid in the vessel G will be lowered again until
the mouth of the pipe C is opened and the oil supplied to G in the
manner above described, this action continuing so long as there is oil in "
the reservoir A and the lamp is burning.
In witness whereof, I, the said Edwin Jones, have hereunto
set my hand and seal, this Twenty-third day of November, in
the year of our Lord One thousand eight hundred and sixty- 1
eight.