CERTAIN IMPROVEMENTS IN THE MANUFACTURE OF LAMPS
Year: 1826

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
QUARRILL, of Peter's Hill, Doctors' Commons, in the City of London, Lamp
Manufacturer, send greeting.
WHEREAS His present most Excellent Majesty King George the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Twentieth day of December, in the seventh year of His
reign, did, for Himself, His heirs and successors, give and grant unto me, the
said Thomas Quarrill, His especial licence that I, the said Thomas Quarrill,
my exors, adiñors, and assigns, or such others as I, the said Thomas Quarrill,
my exors, admors, or assigns, should at any time agree with, and no others,
from time to time and all times during the term of years therein expressed,
should and lawfully might make, use, exercise, and vend, within England,
Wales, and the Town of Berwick-upon-Tweed, my Invention of "CERTAIN
IMPROVEMENTS IN THE MANUFACTURE OF LAMPS;" in which said Letters Patent
is contained a proviso, obliging me, the said Thomas Quarrill, by an instrument
in writing under my hand and seal, particularly to describe and ascertain the
nature of my said Invention, and in what manner the same is to be performed,
and to cause the same to be inrolled in His Majesty's High Court of
Chancery within six calendar months next and immediately after the date
of the said in part recited Letters Patent, as in and by the same, réference
being thereunto had, will more fully appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Thomas Quarrill, do hereby declare the nature of my said Invention to
consist of three particulars or improvements :-
First, in a new shaped oil vessel, contrived for the introduction of an air
-chamber or reservoir, and for sealing the same, as herein-after described.
Secondly, in a mode of rarefying the air that regulates the float or flow of
oil, and which prevents the oil from overflowing when burning, or spilling when
the lamp is moved.
And, thirdly, in a rack placed round the glass-holder, by means of which the
cotton is raised when required.
And in further compliance with the said proviso, I, the said Thomas Quarrill,
do hereby describe the manner in which my said Invention is to be performed
by the following description thereof, reference being had to the Drawing
annexed, and to the letters marked thereon, that is to say :-
DESCRIPTION OF THE DRAWING.
The Drawing represents a fountain lamp where the oil is above the light,
the upper part being drawn in section. A is the main pillar of the lamp;
B, B, is the under glass; and C, the upper glass; D is the chimney; E, the
cotton or wick; F, F, o, o, is the oil vessel, and it will be observed that o, o,
is the new part of the shape, and is the first particular of my said Invention.
G, G, G, is an air chamber, formed of tubes placed one within the other, as
here shown. This air chamber is open at X, X, and is sealed by the oil in
the vessel at o, o, and communicates at H with that partof the arm J which
is above the float L. This flow hole or float is made in the ordinary way. By
this arrangement it will be seen that the air which enters the float as the oil is
consumed passes up into and through the air chamber in the direction of the
arrows till it gets into the oil vessel at X, X, by which time it has become so
heated and rarefied, and that it does not expend more after it is admitted into the
oil vessel, and thus the overflow of oil occasioned by the expansion when cold
air is admitted in the oil vessel and afterwards becomes heated is avoided;
and this is what I claim as the second particular of my said Invention. M, M,
is a rack formed on to or applied to the glass-holder, and which, by means of
the pinion P, and rod and nut V and W, enables me to turn the cotton or wick
up or down as required. This constitutes the third particular of my said
Invention.
Now, whereas I have shewn in the Drawing annexed all the necessary parts
of a lamp of this description for the purpose of better elucidating my said
Invention, but whereas I only claim as my Invention the three following par-

page_text: ticulars or improvements, which have been herein-before more particularly
described, and which I claim only with respect to fountain lamps where the oil
is above the light; that is to say :-
First, the part o, o, of the oil vessel.
Secondly, the rarefying of the air that feeds the oil vessel previously to its
entering the oil vessel by means of an air chamber or other receptacle for
heated air for that purpose.
And, thirdly, the application of a rack immediately to the glass-holder.
And these my said improvements being to the best of my knowledge and
belief entirely new, and never before practised in that part of His said
Majesty's United Kingdom of Great Britain and Ireland called England, His
Dominion of Wales, or Town of Berwick-upon-Tweed, I do hereby declare
this to be my Specification of my said Invention, and that I do verily believe
this my Specification doth comply in all respects fully and without reserve or
disguise with the proviso in the said herein-before in part recited Letters
Patent contained; wherefore I hereby claim to maintain exclusive right and
privilege to my said Invention.
In witness whereof, I, the said Thomas Quarrill, have hereunto set my
hand and seal, this Eighteenth day of June, in the year of our Lord
One thousand eight hundred and twenty-seven.