An Improved Mechanical Forced-draught Lamp for Lighting and Heating Purposes.
Year: 1890

page_text: Date of Application, 3rd Feb., 1890
Complete Specification Left, 3rd Nov., 1890--Accepted, 13th Dec., 1890
PROVISIONAL SPECIFICATION.
An Improved Mechanical Forced-draught Lamp for Lighting
and Heating Purposes.
THOMAS METCALFE THOMPSON, 26, Guilford Street, London, W.C., Engineer, do
hereby declare the nature of this invention to be as follows:-
-
This invention relates to that class of lamps which are operated by clockwork to
supply a constant current of air to the wick or burner, and dispenses with a glass
chimney. Such lamps, as at present constructed, consist of a reservoir for containing
the oil, and is surrounded by a shell or casing leaving a space between them, through
which the air from the fan is forced up to the wick or burner. According to my
improvemerts, I use an ordinary oil reservoir, through the bottom of which I pass
two or more tubes bent or shaped as required, and bring them to the top of reservoir.
In bringing the tubes to the top of reservoir, I shape them so that each tube forms
part of a circle according to the number of tubes I use.
In the inner circle formed by the tubes at the top of reservoir, I fix the
ordinary apparatus for holding the wick or burner, with rackwork for adjusting
the same, and worked by a thumb screw.
The tubes at the bottom of reservoir are fixed on to one tube, so that cach
tube will carry an equal quantity of air from the fan to the wick or burner, this
tube is then fixed in the waist of the lamp, so that it will receive the tube con-
taining the fan, worked by any suitable clockwork.
At the upper end of tubes, I place wire guze or perforated metal to prevent
refuse or charred wick from falling down the tubes and clogging the wheel movement
and so stop the motion, thereby causing the lamp to smoke. The lamp is fitted with
the usual dome or cap having an aperture for the passage of the flame, and so con-
structed as to allow the current of air to pass through and to impinge on the
flame.
As my improvements are capable of modifications without departing from the
principle thereof I do not restrict myself to dimensions, or to the precise formation of
improved lamp.
Dated this Third day of February 1890.
COMPLETE SPECIFICATION.
An Improved Mechanical Forced-draught Lamp for Lighting
and Heating Purposes.
I, THOMAS METCALFE THOMPSON, Pooley Bridge, in the County of Westmoreland,
Engineer, late of 26, Guilford Street, London, W.C., 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 that class of lamps which are operated by clockwork to
supply a constant current of air to the wick or burner and dispenses with a glass
chimney. Such lamps as at present constructed, consist of a reservoir for containing
the oil which is surrounded by a shell or casing, leaving a space between them, through
which the air from the fan is forced up to the wick or burner.
At
According to my improvements I use an ordinary oil reservoir through the bottom
of which I fix two or more tubes bent or shaped as required as at A. A Fig. 1.
the top of reservoir the tubes are shaped as at A Fig. 2. In the inner circle formed
by the tubes at the top of reservoir I fix the ordinary apparatus for holding the wick
CDC77

page_text: or burner, with rackwork for adjusting the same and worked by a thumb screw as
at B Fig. 2.
The tubes at the bottom of reservoir are fixed to one tube, so that each tube will
carry an equal quantity of air from the fan to the wick or burner as at A Fig. 3.
This tube is then fixed in the waist of the lamp, so that it will receive the tube con-
taining the fan, worked by any suitable clockwork.
At the upper end of tubes, I place wire gauze or perforated metal, as at B Fig. 1,
to prevent refuse or charred wick from falling down the tubes and clogging the wheel
movement and so stop the motion, thereby causing the lamp to smoke.
The lamp is fitted with the usual dome or cap, having an aperture for the passage
of the flame, and so constructed as to allow the current of air to pass through and
impinge on the flame.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is,
The arrangement of the tubes passing through the oil reservoir, as described and
shown at A A in Figs. 1. 2. and 3.
Fixing the wire gauze or perforated metal to prevent refuse or charred wick
falling down the tubes, as described and shown at B, Fig. 1.
Dated this First day of November 1890.
THOS. M. THOMPSON.