MENTS IN LAMP-BURNERS AND IN DEVICES TO BE USED THEREWITH.
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by Gustav Fischer at the Office of the
Commissioners of Patents on the 12th August 1879.
GUSTAV FISCHER, of Hoxton Square, in the County of Middlesex.
MENTS IN LAMP-BURNERS AND IN DEVICES TO BE USED THEREWITH.'
"
"IMPROVE-
My Invention relates chiefly to improvements in lamp burners for burning
petroleum, paraffine, and other oil, and in devices or apparatus to be used in con-
nection therewith.
It is chiefly designed to provide means whereby a steady equal light may be
produced as combustion takes place, and less oil consumed for a given amount of
light than is the case in lamps of this class as heretofore constructed.
In carrying the said Invention into practice I provide a number of tubes, in each
one of which a wick is placed. The said tubes and the wicks may be circular or of
any other suitable form in transverse section, and in some cases I arrange them in
such a position that they form a circle, preferably leaving a small space between
each tube. The tubes forming the circle are placed at the upper part of the lamp
and constitute so many separate burners, that is to say, they are firmly secured to
the cap or cover which is attached to the upper part of the oil vessel or receptacle.
I place a band of metal around the tubes near the upper part thereof, which band
serves to strengthen and support them. In the centre of the circle formed by the
tubes I place another tube or a rod which is of the same length as the other tubes,
its top being in the same horizontal plane. Over this fixed central tube or rod I
place another tube of larger diameter, having at its upper end a disc, which is of
about the same diameter as the circle formed by the inner portion of the aforesaid
tubes. The tube carrying the disc fits loosely upon the central tube or rod, so that
it may be removed therefrom for the purpose of facilitating the cleaning of
this portion of the lamp when necessary. The said removable tube is somewhat
higher than the others, and its object is to support the disc in such a position that
the flames arising from the wicks in the circle may thereby be kept from mingling
centrally near their base, that is to say, the flames are caused to rise vertically, and
do not unite in the centre until they have risen a sufficient height to ensure the
result desired, which is to produce a steady uniform light. The said wick-tubes are
open at their lower end as well as at their upper end, and into the lower end of
each one another tube is fitted in such a manner that it will slide therein
telescopically. These sliding or lower tubes are united at their base by a disc or

page_text: plate so that they may all move simultaneously. Upon this disc a vertical rack is
secured which extends upward parallel with the tubes themselves, and above the
oil-receptacle-cover a rod is provided carrying a pinion which engages with the
teeth of the said rack, so that by manipulating a stud with a milled edge provided at
the other end of the said rod, the lower or sliding tubes, and the wicks which are in the
same, may be raised or lowered as desired, in order to regulate the height of the
flames. I prefer to make each lower or sliding tube with an opening on one side
thereof extending a portion of its length to enable the wick therein to be reached if
desired for any purpose. This also causes that portion of each wick to be in contact
with the oil when the tubes are in a certain position and the oil is at a certain
height in the receptacle. The wicks pass through the sliding tubes and through the
stationary tubes, and as the wicks consume at the top they may be raised by
operating the aforesaid milled stud. In furnishing the lamps with wicks, they are
passed through the disc uniting the sliding tubes, and thus into the latter; each
tube receiving one wick. To facilitate this operation I provide a rod with a hook
at its lower end, and a suitable enlargement at its other end to serve as a handle.
The hooked end is passed through the stationary wick-tubes from the top, one at a
time, and the hook is attached to the upper part of a wick; the latter is then
readily drawn into its proper position. This operation is effected whenever a new
wick is required in either of the tubes. Any suitable number of wick-tubes may
be employed.
In some cases the wick-tubes may be arranged in parallel rows instead of in
circular form, and in other cases they may form two circles one within another,
with or without space between the two circles.
Another part of my said Invention consists in providing a frame or support of
novel construction to be attached to a lump of any suitable kind for supporting a
shade or globe. It is constructed as follows, that is to say, I provide a ring which
encircles a portion of the lamp, preferably below the base of the flame. To this
ring I attach radiating arms, the outer end of each arm being provided with an
enlarged bent portion in which there is an aperture. Another arm is fitted to each of
the aforesaid arins, each one being provided with a corresponding enlarged bent por-
tion at its inner end, and with a hook or upwardly extending piece at its outer end.
Each hooked arm is fitted to one of the first named arms in such a manner that the
former may slide along the latter outward or inward, so that the bearing surface for
a shade or globe may be extended or curtailed to a considerable extent to accom-
modate globes or shades of different dimensions.
I provide a brush for cleaning the upper or fixed tubes and parts near thereto,
the said brush being made with a tubular stem which fits over the aforesaid central
tube or rod, the bristles being placed around the outer part of this stem. The latter
being placed upon the said central tube, the bristles may be caused to revolve
around and amongst the tubes by turning the handle which extends upward, and
the tubes are thus easily and expeditiously cleaned.