Improvements in Workmen's and other Gas Lamps.
Year: 1891

page_text: Date vi Application, 24th Dec., 1891-Accepted. 30th Jan. 1802
5
MPLETE SPECIFICATION.
Improvements in Workmen's and other Gas Lamps.
I, FERDINAND FRITZ of 115 and 116 Leipziger Str., Berlin, in the German
Empire, Manufacturer, do hereby declare the nature of this invention and the
manner in which the same is to be performed to be particularly described and
ascertained in and by the following statement:-
My invention relates to improvements in workmen's and other gas lamps in
which a burner is employed having an interchangeable tube for reducing the
pressure of the gas coming from the service and furthermore a device for heating
the said gas before the same is ignited.
In connection with this burner a cylinder or chimney of elliptical section is
0 employed which however only surrounds the upper part of the flame, and causes
air to be fed to the flame in such manner that all Haring of the same is avoided.
In the accompanying drawings
Fig. 1 is an elevation of the burner.
Fig. 2 a vertical section.
Figs. 3 and 4 are horizontal sections on the lines. x and y y.
Fig. 5 is an elevation of the lamp with the reflector shade in section.
Fig. 6 is a horizontal section of the chimney with the burner in top view.
The base a with its screw threads is screwed into the gas tube and provided
with an interchangeable tube or tip (Fig. 2) the upper end of the same being
bored or slotted, according to the pressure in the service and the quantity of
gas to be consumed and through which the gas must flow before it reaches the
burner slot or openings, the borings or slots being so chosen that the gas
pressure is reduced to such a degree before its exit from the burner that it issues
from the same without pressure.
Besides the saving in gas produced in the above described manner I also attain
a preparatory warming of the gas in the burner by providing the shell c carrying
the soapstone or other tip or burner d with a cup like part e the bottom of which
is perforated for the passage of the gas whereby the gas, as denoted by the arrows
in Fig. 2, is compelled to pass around and over the cup e and then downwards to
the lower opening of the soapstone or other burner d and in doing so becomes
warmed by coming in contact with the hot walls of the shell c and cup e.
over pressure which the gas may have had in issuing from the part will be
Any
entirely overcome.
The soapstone or other burner tip henceforth only called the tip d is, in order
o better attain the warming of the shell c, screwed direct into the latter so that
he flame comes into direct contact with the said shell c.
The disadvantage of flames from gas issuing without pressure from the burner
, that the air causes the same to flare and burn unsteadily so that the same
ould not be used to work by. Now in order to avoid all flaring or unsteady
urning of the flame and render the same absolutely steady and brilliant I employ
chimney of elliptical section which however only surrounds the upper part of
he flame as shown in Fig. 5.
This chimney which is preferably made from sheet metal is warmed by the
me and air drawn into the same. The air thus flowing into the chimney has
e tendency to also force the flame into the said chimney thus giving the said
me a uniform and regular form and enabling the same to burn quite steadily
th brilliant light, properties which would otherwise be lost in consequence of
e want of pressure to the gas issuing from the burner.
eferably cut away at its lower front edge whilst the opposite inner surface is
The chimney is
eferably provided with a reflecting surface so that the light of the flame
[Price 6d.]

page_text: .
is reflected towards a desired position and the illuminating power thus increased.
In order to be able to adjust the chimney f and also the shade g in the vertical
plane the same can be provided with racks and spring pawls, perforations and a
suitable pin or stop or other devices such for instance as the racks h, h attached to
the carriers and fixed either around the burner tube or to the gas arm or
otherwise.
Pawls, noses, pins or stops movably attached to the shade g and gearing into
the teeth, perforations or notches of the racks in the one case and to the carrier
arms or cylinder f in the other case enable the shade and also the chimney to be
adjusted according to requirements.
It will from the foregoing be evident that the separate parts of my improved
lamp can be modified in various manner without in any way departing from the
tenor of my invention.
Having now particularly described and ascertained the nature of my said
invention and the manner in which the same is to be performed I declare that
what I claim is :
1) A gas lamp in which the gas pressure in the service is entirely abolished or
reduced to a very considerable extent characterised by the slotted or perforated
tube or part, a cup or part such as e with slotted or perforated bottom part and
the case or shell for preparatorily warming the gas substantially as described.
2) In a gas lamp of the kind described above the combination of the burner b
and its parts c, d, e with the chimney substantially as described.
"
3) In a gas lamp of the above described kind the application of a chimney of
elliptical or other section whereby the one side is cut away and the opposite side
provided with a reflecting surface substantially as described.
4) In a gas lamp of the above described kind the combination of the
burner a, b, c, d, e and the stationary or adjustable chimney f with a stationary or
adjustable shade g, substantially as set forth.
5) My improved gas lamp so constructed and arranged substantially as described
and shown in the accompanying drawing.
Dated this 24th day of December 1891.
W. P. THOMPSON & BOULT,
Agents for the Applicant.