Year: 1899

page_text: I, JOHANN HEINRICH RAUSCH, of 238 & 240, Banksstrasse, Hamburg, Germany,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
A lamp according to this invention is provided with a peculiarly constructed
cover which regulates the flow of air so that the burners, while having a suffi-
cient supply of air, are completely protected from draughts, condensation of
moisture on the glass is obviated, and the gases of combustion are conducted away
in proportion to their production.
In one example the construction is as follows:-
The cover, which is mounted in a frame on the lamp and is hinged thereto,
comprises an outer casing of suitable shape, a cap fitting therein, a funnel-shaped
smoke collector, and a wider funnel-shaped part (hereinafter called the air-
deflector) which deflects upwards air entering through openings in the outer
casing. A portion of the smoke collector extends into the upper, tubular and
reduced part of the casing and is held exactly coaxially therein by several spring
bows, whilst it is fixed at a suitable height therein by a number of supports
securing its lower and funnel-shaped ends to the outer casing. The smoke collector
is closed at the top and is secured there by means of a screwed rod fixed in a
knob supported by the cap. In the upper part of the smoke collector there are
arranged a suitable number of lateral openings through which the gases of com-
bustion flow upwardly to escape through openings provided in the underside of
the cap, which is located above the smoke collector. The air-deflector is fixed
closely at its lower wide end to the internal surface of the casing below the air
openings. The air entering through the latter is forced by the air-deflector to
make its way first upwardly between the air deflector and the outer casing and
then downwardly, between the air-deflector and the smoke collector part of it
then being further deflected upwards into the interior of the smoke-collector
by a baffle plate or reflector and part of it passing onwards between the frame
and the baffle plate or reflector (or through perforations in the edge of the latter)
and along the inner surface of the glass bell, to the burners. The gases of com-
bustion cannot escape directly at the top of the smoke collector and are forced
to pass through the aforesaid lateral openings in the upper part of the collector
and upwards to the aforesaid openings in the cap, which are provided in the lower
wall of an annular projecting hollow portion of the cap for the purpose of pre-
venting the entrance of dust, snow, and the like.
The particular arrangement of the smoke collector in combination with the
outer casing and the air deflector causes a continually uniform circulation of
air, so that the burners are completely protected from draughts and condensation
of moisture on the glass is obviated in a reliable manner.
1001
1000
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.

page_text: Improvements in Lamps.
I, JOHANN HEINRICH RAUSCH, of 238 and 240, Banksstrasse, Hamburg, Germany,
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:-
A lamp according to this invention is provided with a peculiarly constructed
cover which regulates the flow of air so that the burners, while having a suffi-
cient supply of air, are completely protected from draughts, condensation of
moisture on the glass is obviated, and the gases of combustion are conducted away
in proportion to their production.
An example of a lamp constructed according to this invention is shown in
vertical section in the accompanying drawing.
The cover, which is mounted in the frame a of the lamp and is hinged thereto,
comprises an outer casing 6 of suitable shape, a cap b¹ fitting therein, a funnel-
shaped smoke collector cand a wider funnel-shaped part d (hereinafter called
the air-deflector) which deflects upwards air entering through openings e in
the outer casing b. A portion of the smoke collector c extends into the upper,
tubular and reduced part of the casing 6 and is held exactly co-axially therein by
several spring bows f, whilst it is fixed at a suitable height therein by a number
of supports g securing its lower and funnel-shaped end to the outer casing b.
The smoke collector is closed at the top and is secured there by means of a screwed
rod i fixed in a knob h supported by the cap b¹. In the upper part of the smoke
collector there are arranged a suitable number of lateral openings through
which. the gases of combustion flow upwardly to escape through openings m pro-
vided in the underside of the cap 61, which is located above the smoke collector.
The air-deflector d is fixed closely at its lower wide end to the internal surface
of the casing below the air openings e. The air entering through the openings e
is forced by the air-deflector d to make its way, as indicated by arrows, first upwardly
between the air-deflector d and the outer casing b and then downwardly between
the air-deflector d and the smoke collector c, part of it then being further deflected
upwards into the interior of the smoke-collector by a baffle plate or reflector,
and part of it passing onwards between the frame a and the baffle-plate or reflector
(or through perforations in the edge of the latter) and along the inner surface
of the glass bell k, to the burners. The gases of combustion cannot escape directly
at the top of the smoke collector c and are forced to pass through the lateral
openings in the upper part of the collector c and upwards to and through the
aforesaid openings m in the cap, which are provided in the lower wall of an
annular projecting hollow portion of the cap 61 for the purpose of preventing the
entrance of dust, snow, and the like.
The particular arrangement of the smoke collector in combination with the
outer casing 6 and the air deflector d causes a continually uniform circulation of
air, so that the burners are completely protected from draughts and condensation
of moisture on the glass is obviated in a reliable manner.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. A lamp cover comprising a cap (6) with air-outlet openings (m) arranged
in the lower side of its annular projecting hollow portion, and an internal smoke-
collector (c) with lateral openings (1) that is located below the cap and is closed

page_text: 2. The improved lamp constructed, arranged, and operating as herein before
described with reference to and shown in the accompanying drawing.
Dated this 19th day of January 1900.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.