IMPROVE- MENTS IN LAMPS
Year: 1875

page_text: LETTERS PATENT to William John Pinkerman, of 67, Strand, in the
City of Westminster, Gentleman, for the Invention of "IMPROVE-
MENTS IN LAMPS."-A communication from abroad by Louis Allen
Presby, of New York City, United States of America.
PROVISIONAL SPECIFICATION left by the said William John Pinkerman
at the Office of the Commissioners of Patents, with his Petition,
on the 29th October 1875.
I, WILLIAM John Pinkerman, of 67, Strand, in the City of West-
minster, Gentleman, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN LAMPS," a communication to me from abroad by
Louis Allen Presby, of New York City, United States of America,
to be as follows:-
The improvements have for their object the extinction of flame and of
the burning wick of all lamps using wicks, and consist in the appli-
cation to their wick tubes of an outer tube made to slide over and rise
and fall above or below the top orifice of the wick tube, and so con-

page_text: structed and actuated that when the wick is burning and it is desired
that it may continue so the said sliding outer tube may rest with its top
orifice flush with or slightly below the top orifice of the wick tube,
but when it is desired to extinguish the burning wick the said sliding
outer tube may be slided or raised up a sufficient distance above the
wick tube and its burning wick, and thus extinguish the latter.
The improvements may be performed by making the sliding outer
tube of metal or of other convenient material, and so fixing it that it may
preserve its normal position, namely, down, and thus allow the wick to
burn freely by means of a small weight attached to it; or the tube itself
may be made of sufficient weight to preserve its normal position; and
for the purpose of raising the said tube and keeping it so raised, if desired,
for extinguishing purposes, the tube may be furnished with an arm or
lever, counterbalanced or otherwise, attached to it and projecting con-
veniently, so that it may readily be got at; or other mechanical means
may be used for raising or lowering the said outer sliding tube.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William John Pinkerman in the Great Seal Patent
Office on the 27th April 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
JOHN PINKERMAN, of 67, Strand, in the City of Westminster, Gentleman,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-ninth day of October, in the
year of our Lord One thousand eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said William John Pinkerman, Her
special licence that I, the said William John Pinkerman, my executors,
administrators, and assigns, or such others as I, the said William John
Pinkerman, my executors, administrators, and assigns, should at any -
time agree with, and no others, from time to time and at all times there-
after 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 Inven-

page_text: tion for "IMPROVEMENTS IN LAMPS," a communication to me from abroad
by Louis Allen Presby, of New York City, United States of America,
upon the condition (amongst others) that I, the said William John
Pinkerman, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should par-
ticularly 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 William John Pinkerman, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement:-
The improvements have for their object the extinction of flame and
of the burning wick of all lamps using wicks, and consist in the application
to their wick tubes of an outer tube made to slide over and rise and fall
above or below the top orifice of the wick tube, and so constructed and
actuated that when the wick is burning and it is desired that it may
continue so the said sliding outer tube may rest with its top orifice flush
with or slightly below the top orifice of the wick tube, but when it is
desired to extinguish the burning wick the said sliding outer tube may
be slided or raised up a sufficient distance above the wick tube and its
burning wick, and thus extinguish the latter.
The improvements may be performed by making the sliding outer
tube of metal or of other convenient material, and so fixing it that it
may preserve its normal position, namely, down, and thus allow the
wick to burn freely by means of a small weight attached to it; or the
tube itself may be made of sufficient weight to preserve its normal
position; and for the purpose of raising the said tube and keeping it so
raised if desired for extinguishing purposes the tube may be furnished
with an arm or lever, counterbalanced or otherwise attached to it and
projecting conveniently so that it may readily be got at; or other
mechanical means may be used for raising or lowering the said outer
sliding tube.
In order that my Invention may be more fully understood I have
annexed a Sheet of Drawings showing a convenient mode of performing
the improvements, but I wish it to be understood that I do not limit

page_text: myself to the way set forth, as it can be varied without departing from
the spirit of my Invention.
Fig. 1 is a sectional elevation of lamp burner and attachment showing
the extinguishing tube 6 in its lower position, and in that position
allowing the wick (not shown) to burn when lighted; Fig. 2 shows 5
sectional elevation of burner with tube lifted up in its extinguishing
position; Fig. 3 is plan of Figs. 1 and 2, and Fig. 4 perspective view
of extinguisher tube b.
In the above Figures is the extinguisher tube with a weighted
collar and seat c resting on a lever d acting on a pivot g, as shown; a is 10
the burner tube; f, attachment box; e, wick regulator.
The lever d is so pivoted that it will retain the position shown in
Fig. 2 until released therefrom by a stick or finger tilting it up, and
when tilted up it immediately takes the position shown in Fig. 1, and
the wick of the lamp can be relighted. The lever d is also so pro- 15
portioned, as also the weight of the collar seat c, that on the lamp being
placed out of the vertical, as in falling, the extinguishing tube will rise
and put out the lamp.
In witness whereof, I, the said William John Pinkerman, have
hereunto set my hand and seal, this Twenty-seventh day of April, 20
in the year of our Lord One thousand eight hundred and seventy-
WILLIAM JOHN PINKERMAN. (L.8.)