Improvements in Lamp Burners.
Year: 1890

page_text: Date of Application, 18th Feb., 1890-Accepted, 29th Mar., 1890
COMPLETE SPECIFICATION.
Improvements in Lamp Burners.
We, MAX GRAETZ, ADOLF GRAETZ and ALBERT GRAETZ, all manufacturers of.
Berlin S. O. Lausitzer Strasse 31 in the Kingdom of Prussia, German Empire do
hereby declare the nature of this Invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement :-
Our Improvements consist firstly in providing the stationary wick tube of the
burner with a moveable bottom part, having several springs for catching and moving
the wick of the burner; secondly in providing the stationary wick tube with a burner
disc of a special form.
In order to make our invention more clear, we refer to the accompanying drawings,
in which similar letters denote similar parts throughout the different figures.
Fig. 1 shows the lamp burner in a longitudinal section, provided with the first
contrivance the wick being caught by the springs ƒ ƒ.
Fig. 2 shows the lamp burner in a longitudinal section, provided with the first
contrivance, the wick being free from the springs.
Fig. 3 shows a cross section through the burner.
Figs. 4 and 5 show the inner burner tube provided with the moveable bottom forming
a slide on the tube a.
Figs. 6-8 show the second contrivance.
a d are the inner and the outer burner tubes; the inner burner tube a is provided
with the conical projections e e at its under side and is surrounded by the slide b,
which bears the flat springs f f. To the cylinder bis attached the rack bar h,
which gears with the wheel r intended for regulating the position of the wick.
When the slide is in the position Fig. 1, the springs ff clasp together and
the wick D is perfectly free in the wick tube a d. But when the cylinder-b is brought
upwards, by turning the wheel r the springs ff are pressed outwards by the
conical sheets e and the cylinder a and catch the wick D. The wick D may be moved
at will.
For the purpose of securing the wick from becoming accidentally loosened, a sheet
spring provided with a projection is attached to the tube a; this spring is encircled
by the bottom of the slide b (Fig. 4) so that the bottom pushes against said
projection thereby preventing the slide 6 from being lowered too much.
When the wick is consumed, so that it can not be sufficiently raised by the rack,
its position relatively to the wick tube must be changed, viz. after releasing the
lamp burner from the lamp (not shown in the drawing) the spring i must be pushed to
the side so that its projection passes the bottom of b and the tube b reaches the
position shown in Fig. 5. The wick D is then released from the springs f and
may be drawn up and trimmed, so that when the cylinder 6 with springs is again
raised, the latter engages with the lower part of the wick.
Concerning the second contrivance of the lamp burner the inner tube a bears
the tube p Fig. 6, to which is attached the disc d provided for the purpose of
On this disc are
spreading the flame of the burner in the well-known inanner.
firmly fixed the three bars 6 fitting together in the bore of the tube p' and
forming ribs, along which the hot air, arising from the tube p', passes and is strongly
heated. To the top of these three bars a little cap p* is attached, by means of
which the air and the flame are forced outwards.

page_text: Having now particularly described and ascertained the nature of our said Inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
In lamp burners :
1.) The combination of the inner wick tube a with the moveable slide b, provided
with springs ff, which catch the wick when spread out by the wick tube a and
which release the wick in the lowered position of the slide b, for the purpose as
described.
2.) The combination of the inner wick tube a, having the conical bottom or
bottom parts e e, with the moveable slide b, provided with springs ff, which catch
the wick when spread out by the wick tube a and which release the wick in the
lowered position of the slide b, for the purpose as described.
3.) The combination of the inner wick tube a to which a spring i provided with
a stop is attached, with the moveable slide b, provided with springs ff, which catch
the wick when spread out by the wick tube a and which release the wick in the lowered
position of the slide b, for the purpose as described.
4.) The combination of the inner wick tube a, having the conical bottom or bottom
parts ee and bearing a spring provided with a stop, with the moveable slide b,
provided with springs ff, which catch the wick when spread out by the wick tube a
and which release the wick in the lowered position of the slide b, for the purpose as
described.
5.) The combination of the inner wick tube a with the burner tube p¹ having the
disc d¹ and the ribs 64 fitting together in the centre and provided with the cap p*,
substantially as described.
Dated this 10th 1
MAX GRAETZ.
ADOLF GRAETZ.
ALBERT GRAETZ.
By Fredk. Walker & Hyde,
4, Moorfields, London, E.C., Agents for the Applicants.