Improvements in Flat-wick Burners for Oil Lamps.
Year: 1897

page_text: Date of Application. 12th Feb., 1997-Accepter1, 17th Apr., 1997
COMPLETE SPECIFICATION..
Improvements in Flat-wick Burners for Oil Lamps.
I, JOHANNES SCHNEIDER-DÖRFFEL, of Leipzig-Reudnitz, Manufacturer, 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:-
This invention relates to an improved construction of burners for oil lamps with
flat wicks whereby the several parts thereof are rendered capable of being readily
cleaned, and explosions are avoided.
Flat wick burners of existing construction are either so made that the entire
upper part, including the cap, is removeable, but is not otherwise separable, so that
the interior of the upper part is inaccessible for cleaning purposes, or they are so
constructed that one portion of the upper part is removeable, while the other part
remains fixed to the wick tube. With such burners explosions readily occur
because they cannot be properly cleaned.
The present invention has for its object to obviate these disadvantages; it
consists in mounting the burner gallery upon the burner casing by means of a
bayonet joint which secures it thereto while the burner cap is fitted loose by
means of lappets in slots of the burner gallery and is thus prevented from turning.
The perforated air disc rests on a shoulder on the burner gallery and can follow
the rotation of the wick tube passing through the same.
By opening the bayonet joint, lifting off the burner cap and taking out the
perforated disc, the burner can be separated into its constituent parts, and can
therefore be readily cleaned.
A farther improvement consists in that the spindle of the wick raiser does not
extend with its free end through. the burner casing, but is supported in a bearing
on the inner side thereof. Lastly the invention consists in hermetically soldering
the upper end of the wick tube to the burner casing at the point where it passes
beyond the same,. in order to obtain a complete cutting off of the upper part of the
burner from the oil reservoir, and thus prevent any striking downward of the
flame.
A burner constructed according to the above described invention is shewn on the
accompanying drawing in which Figure 1 shews a side view, Figure 2 a vertical
section, and Figure 3 a section on line x-x Figure 2.
The upper part consists of the burner gallery a within which is the perforated
plate c resting upon a shoulder b thereof; this shoulder has one or more slots d
into which fit loosely lappets on the lower edge of the burner cap e, so that the
latter is prevented from turning. The upper part thus constructed is fitted upon
the cylindrical part of the burner casing 9 and is secured to the projecting end of
the wick raiser spindle h by means of a bayonet joint notch. In consequence of
this mode of fastening, the entire upper part can be removed from the burner
casing by simply turning and lifting it off, so that only the burner casing with the
wick tube and the wick raiser remain.
The upper part can then be separated into its constituent parts by first raising
the burner cape with its lappets out of the slots of the burner gallery and then
taking off the perforated disc c.
The separate parts'can then be effectually cleaned.

page_text: For putting the burner together again the reverse of the above operation is
effected, by first inserting the perforated disc c, then the burner cap e, then passing
the wick tube i from below through a corresponding opening of disc c, and
then turning the burner casing so that the spindle can enter the bayonet joint
notch.
As the perforated disc is loosely inserted, it can readily follow every rotary
movement of the burner casing. When the latter has been pushed into the burner
head with the wick spindle h entering the bayonet joint notch but without turning it
into the locked position, the wick tube will stand at an angle to the slot k of the
burner cap; it will only assume the correct position when such turning has been
properly effected, and consequently the lamp can only be. lit when the upper part
of the burner has been securely locked in position by the bayonet joint.
The spindle of the wick raiser does not extend with its free end through the
burner casing but is carried by a suitable bearing on the inner side thereof as
shewn at Figure 3. By this means a second bayonet joint notch in the burner
head is avoided.
The wick tube is hermetically soldered to the burner casing at the point where
it rises through the same as at m Figure 2. Any oil that may be conveyed by the
star wheels n n from the wick into the burner casing, can flow back into the oil
reservoir through the bottom hole o.
By thus cutting off the communication between the upper part of the burner and
the oil reservoir, any striking downward of the flame into the oil reservoir is
prevented and consequently all explosion is impossible.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In flat wick burners for oil lamps, constructing the upper part or head of
the burner, of a burner gallery having an internal shoulder on which is loosely
placed the perforated air disc, and having one or more slots through which pass
loosely one or more downward projecting lappets on the burner cap so that these
parts can be readily separated from each other for cleaning them, substantially
as described.
2. In a flat wick burner the combination of a gallery a secured by a bayonet
joint slot to the spindle h of the wick raiser, and having an internal shoulder d,
a perforated air disc c fitting with a slotted opening over the wick tube i, and
resting loosely upon the shoulder of the gallery and a burner cap e resting loosely
upon the shoulder of the gallery and having one or more lappets f passing loosely
through slots in the said shoulder, substantially as described.
3. In combination with a flat wick burner such as is referred to in the second
claim, a wick raiser spindle having its free end terminating within the burner
socket and carried by a bearing formed on the inner surface of the latter,
substantially as and for the purpose described.
4. In combination with a flat wick burner such as is referred to in the second
claim, soldering the wick tube hermetically to the burner casing at the point where
it passes beyond the same so as to cut off the communication between the upper
part of the burner and the oil reservoir, substantially as described.
Dated this 12th day of February 1897
ABEL & IMRAY,
Agents for the Applicant.