IMPROVE- MENTS IN CHANDELIERS OR SLIDING PENDANT LAMPS
Year: 1881

page_text: LETTERS PATENT to Gerard Wenzeslaus von Nawrocki, Proprietor of the
Firm of J. Brandt and G. W. v. Nawrocki, of 124, Leipzigerstrasse, Berlin,
Germany, Civil Engineer and Patent Solicitor, for an Invention of "IMPROVE-
MENTS IN CHANDELIERS OR SLIDING PENDANT LAMPS." A communication
from H. Raupp, of Heilbronn, in the Empire of Germany, Gas Works
Manager.
PROVISIONAL SPECIFICATION left by the said Gerard Wenzeslaus von
Nawrocki at the Office of the Commissioners of Patents on the 27th October
1881.
GERARD WENZESLAUS VON NAWROCKI, Proprietor of the Firm of J. Brandt
and G. W. v. Nawrocki, of 124, Leipzigerstrasse, Berlin, Germany, Civil Engineer
and Patent Solicitor. "IMPROVEMENTS IN CHANDELIERS OR SLIDING PENDANT
LAMPS." A communication from H. Raupp, of Heilbronn, in the Empire of
Germany, Gas Works Manager.
This Invention refers to a new sliding chandelier. The sliding chandeliers and
lyre shaped lamps heretofore used are only suitable for very lofty rooms, as the
sliding tube is arranged above the lamp already high in itself.
Moreover the stuffing boxes arranged directly over the flame suffer by the great
heat, and heavy counterweights or complicated spring appliances are also required,
whereby such lamps become costly and in many cases difficult or impossible of
application. The proposed new lamp is intended to overcome these defects, and to
be applicable as a reading lamp, and work lamp, and general family lamp, which
even in low rooms, in the day time can be pushed up out of the way, and in the
evening be pulled down to a short distance from the table.
To accomplish this, and to prevent stuffing box heatiug, the lamp is made with
two lateral sliding tubes, the upper or stationary parts of which are united at top
and there provided with means for suspending it by, while the lower or sliding
parts are united below end receive the lamp itself, which latter thus finds its place
between the sliding tubes, the whole resembling a trapeze.

page_text: Obviously this chandelier is applicable for petroleum and other oil as well as for
gas, although particularly suitable for the latter; the upper cross bar may be in the
form of a curved tube to which is connected a smoke and heat deflecting shade, and
to which the socket for connecting with the gas pipe (if used for gas) is fixed.
The lateral stationary pipes terminate below in stuffing boxes through which the
sliding tubes pass, which latter are united by a tubular, by preference curved
cross bar, conveying the gas to the lamp proper fixed thereon, and carrying also the
usual shade or globe. If the lamp is to be used for petroleum or other oil the oil
reservoir is of course also attached to this part; the two lateral fixed limbs or parts
of the chandelier may if desired each carry a bracket lamp. The form and
ornamentation of the chandelier may of course be varied according to taste and
other requirements. As the whole height of the chandelier is made available for
drawing down, the lamp in the middle may be pulled down as far as possible.
The two laterally arranged stuffing boxes are not exposed to heat and no counter-
weights or springs are needed, as the stuffing boxes afford the required frictional
resistance. This form of chandelier is also particularly applicable for carburetting
appliances which are to be heated by the burner. More than one lamp may if
desired be arranged on or in connection with the lower crossbar.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Gerard Wenzeslaus von Nawrocki in the Great Seal Patent Office on
the 27th April 1882.
GERARD WENZESLAUS VON NAWROCKI, Proprietor of the Firm of J. Brandt
and G. W. v. Nawrocki, of 124, Leipzigerstrasse, Berlin, Germany, Civil Engineer
and Patent Solicitor. "IMPROVEMENTS IN CHANDELIERS OR SLIDING PENDANT
LAMPS." (A communication from H. Raupp, of Heilbronn, in the Empire of
Germany, Gas Works Manager.)
This Invention refers to a new sliding chandelier. The sliding chandeliers and
lyre shaped lamps heretofore used are only suitable for very lofty rooms, as the
sliding tube is arranged above the lamp already high in itself.
Moreover the stuffing boxes arranged directly over the flume suffer by the great
heat, and heavy counterweights or complicated spring appliances are also required,
whereby such lamps become costly and in many cases difficult or impossible of
application. The proposed new lamp is intended to overcome these defects, and
to be applicable as a reading lamp, and work lamp, and general family lamp, which
even in rooms low to the ceiling in the day time can be pushed up out of the
way and in the evening be pulled down to a short distance from the table.
To accomplish this, and to prevent stuffing box heating, the lamp is made
with two lateral sliding tubes, the upper or stationary parts of which are united at
top and there provided with means for suspending it by, while the lower or sliding
parts are united below and receive the lamp itself, which latter thus finds its place
between the sliding tubes, the whole resembling a trapeze.
Obviously this chandelier is applicable for petroleum and other oil as well as for
gas, although particularly suitable for the latter.
In Figures 1 and 2 of the accompanying Drawings are shown two forms of
gasaliers constructed according to this Inventien. In both Figures, a, a, are the
two lateral tubes, and b the upper cross bar, which, as here shown, may be in the
form of a curved tube to which is connected a smoke and heat deflecting shade d,
and to which the socket b' for connecting with the gas pipe (if used for gas) is
fixed. The lateral stationary pipes a terminate below in stuffing boxes through
which the sliding tubes g pass, which latter are united by a tubular, by preference
curved cross bar h, conveying the gas to the burner i of the lamp proper fixed
thereon and carrying also the usual shade or globe. If the lamp is to be used for
petroleum or other oil the oil reservoir is of course also attached to this part h;
the two lateral fixed limbs or parts a of the chandelier may if desired each carry a
bracket lamp m, as shown at Figure 1. The form and ornamentation of the
chandelier may of course be varied according to taste and other requirements. As
the whole height of the chandelier is made available for drawing down, the lamp
in the middle may be pulled down as far as possible. The two laterally arranged
stuffing boxes are not exposed to heat and no counterweights or springs are
needed, as the stuffing boxes afford the required frictional resistance. This form of
chandelier is also particularly applicable for carburetting appliances which are to
be heated by the burner. More than one lamp may if desired be arranged on or
in connection with the lower cross bar h, the form of which does not constitute an
essential part of the Invention.
And having thus described and ascertained the nature of this Invention and

page_text: modes of carrying the same into effect, I declare that I claim as the Invention
communicated to me,-
The chandelier, substantially as hereinbefore described and shown, consisting
esentially of two fixed tubes a united by an upper cross tube, and sliding on inner
tubes g which carry the lamp.
In witness whereof, I, the said Gerard Wenzeslaus von Nawrocki, have
hereunto set my hand and seal, this Twentysecond day of April, in the
year of our Lord One thousand eight hundred and eighty two.
GERARD WENZESLAUS VON NAWROCKI. (L.S.)