IMPROVE- MENTS IN SLIDING CHANDELIERS, GASALIERS, AND OTHER PENDENT LAMPS
Year: 1862

page_text: LETTERS PATENT to Joseph Richard Abbott, of Birmingham, in the
County of Warwick, Lamp Manufacturer, for the Invention of "IMPROVE-
MENTS IN SLIDING CHANDELIERS, GASALIERS, AND OTHER PENDENT LAMPS."
Sealed the 6th January 1863, and dated the 18th July 1862.
PROVISIONAL SPECIFICATION left by the said Joseph Richard Abbott
at the Office of the Commissioners of Patents, with his Petition, on the
18th July 1862.
I, JOSEPH RICHARD ABBOTT, of Birmingham, in the County. of Warwick,
Lamp Manufacturer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN SLIDING CHANDELIERS, GASALIERS, AND OTHER PENDENT LAMps,”
to be as follows (that is to say):-
My Invention refers to sliding pendent lamps of all descriptions, whether
worked by bydraulic slides or by cork ;slides, stuffing boxes, or other means of
securing gas-tight slides, or, as for ordinary chandeliers and oil pendents,
without any of the appliances above named. It consists in providing a means
of sliding such pendents without taking the centre tube to the bottom of tho
pendent, so that I can have a central light; this I effect in the following.
manner :-In making gas pendents upon the water slide principle, the tentre
tube is required to be only the length that may, be necessary for the pendent.
to be lowered, and I employ four tubes in this case instead of three; the outer
tube terminates at its upper end in a gas. box or reservoir, communicating with
the pipes supplying the gas to the burners. Inside this tube is fitted. the usual.

page_text: hydraulic slide apparatus working through the gas box or reservoir before
named, and furnished with its pulleys, chains, and balance weights, the water
cup being above the gas reservoir; inside these slide tubes is fitted the tube
leading the gas from the main pipes. The gas passing down this tube rises
upwards between the water slide and the outer or fourth tube into the reservoir,
and thence down the supply pipes to the burners. In making pendents with
the cork slides or stuffing boxes, I require only two tubes, the stuffing box is
fixed either within the gas reservoir or immediately on the top of it, so that it
works up and down with the outside tube and the reservoir.
the same
For chandeliers and oil or other pendents than those used for
gas,
arrangement as that last described is employed, omitting the cork slide or
stuffing box which is only required for gas.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Joseph: Richard Abbott in the Great Seal Patent Office on
the 17th January 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPII
RICHARD ABBOTT, of Birmingham, in the County of Warwick, Lamp Manu-
facturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighteenth day of July, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-sixth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Joseph Richard Abbott, Her special license, that I, the said Josephi
Richard Abbott, my executors, administrators, and assigns, or such others as
I, the said Joseph Richard Abbott, 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 Inven-
tion for "IMPROVEMENTS IN SLIDING CHANDELIERS, GASALIERS, AND OTHER PENDENT
LAMPS," upon the condition (amongst others) that I, the said Joseph Richard
Abbott, by an instrument in writing under my hand and seal, 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 imme
diately after the date of the said Letters Patent,

page_text: NOW KNOW YE, that I, the said Joseph Richard Abbott, 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, reference being had to the Drawings hereunto
annexed, and to the letters and figures marked thereon (that is to say):→
.
My Invention refers to sliding pendent lamps of all descriptions, whether
worked by bydraulic slides or by cork slides, stuffing boxes, or others means
of securing gas-tight slides, or as for ordinary chandeliers and oil pendents,
without any of the appliances above named. It consists in providing a means
of sliding such pendents without taking the centre tube to the bottom of the
pendent, so that I can have a central light; this I effect in the following
manner: In making gas pendents upon the water slide principle, the centre
tube is required to be only the length that may be necessary for the pendent
to be lowered, and I employ four tubes in this case instead of three; the outer
tube terminates at its upper end in a gas box or reservoir communicating
with the pipes supplying the gas to the burners. Inside this tube is fitted
the usual hydraulic slide apparatus working through the gas box or reservoir
before named, and furnished with its pulleys, chains, and balance weights, the
water cup being above the gas reservoir; inside these slide tubes is fitted the
tube leading the gas from the main pipes. The gas passing down this tube
rises upwards between the water slide, and the outer or fourth tube into the
reservoir, and thence down the supply pipes to the burners. In making
pendents with the cork slides or stuffing boxes I require only two tubes, the
stuffing box is fixed either within the gas reservoir or immediately on the top
of it, so that it works up and down with the outside tube and the reservoir.
For chandeliers and oil or other pendents than those used for gas, the same
arrangement as that last described is employed, omitting the cork slide or
stuffing box, which is only required for gas.
I will now proceed to describe my said Invention more fully in detail by
the aid of the annexed Drawings, in which Figure 1 represents upon a small
scale a pendent hall lamp, with a single central burner. It will be readily
understood that the same principle can be applied to a gasalier for any number
of lights. Figure 2 is a detail full size of the parts in which my improvements
lie; Figure 3 being a vertical section of the same.
Firstly, as applied to a gasalier working upon the water slide principle, (a) .
is the gas tube; (b, c,) the water slide tubes; and (d) a fourth tube, also a
gas tube. The tube (a) is somewhat shorter than the internal length of the
tube (d), so that a communication for the passage of the gas may be maintained
between the tubes (a and d); (e) is the water cup attached to the water slide

page_text: tube (c). Under the water cup is formed a gas receiver (f) with an inlet
from the tube (d), and an outlet or outlets into one or more tubes (h), which
are to supply the gas to the burners. The gas thus travels down the tube (a)
under the water slide tubes (6 and c), the spaces between the tubes (a and b).
and (6 and c) being closed at the bottom to prevent the escape of water, as
usual, up the tube (d) into the receiver (f) and thence down the supply
pipes (h) to the burners.
In Figure 1 are seen the pulleys, chains, and balance weights of the
water slide; these are in all respects similar to those at present employed, and
therefore require no further description; the entire length of the sliding
apparatus will be as shewn in Figure (1) only the length that may be required
for the pendent to be lowered, consequently the centre tubes does not in any
way interfere with the employment of a central light; but as this central light
causes too rapid evaporation of the water in the slide, I put upon the top of
the water a layer of about half an inch of oil, which checks the evaporation.
In making gas pendents with cork slides or stuffing boxes, in which the
water slide tubes are not used, I require only two tubes, the stuffing box being
fixed either within the gas receiver for .immediately on the top of it, so that
the stuffing box or slide works up and down with the outer tube and tho
receiver.
For chandeliers, and oil or other pendents than those used for gas, tho
same arrangement of two tubes may be employed without the cork slide or
stuffing box.
Having thus described the nature of my said Invention, and the manner in
which the same is to be carried into effect, I do not confine myself to the
precise details herein described and illustrated; but that which I claim is the
several improvements in the construction of sliding chandeliers, gasaliers, and
other pendent lamps, by which improvements I am enabled to employ a central
light in such lamps, as herein more fully set forth and specified.
In witness whereof, I, the said Joseph Richard Abbott, have hereunto
hand and seal, this Fifteenth day of January, in the year of our
Lord One thousand eight hundred and sixty-three.
set my
JOSEPH RICHARD ABBOTT. (L.S.)