Year: 1886

page_text: Date of Application, 21st July, 1886
Complete Left, 20th Apr., 1887.
Complete Accepted, 20th May, 1887.
I ALFRED JULIUS BOULT of 323 High Holborn, in the County of Middlesex,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in mineral oil lamps and is preferably
applied to a lamp receiving the atmospheric air-current from underneath the oil
reservoir.
The lower part of the air cone is provided with holes or an annular opening to
enable the current of atmospheric air supplied from underneath the reservoir to enter
the cone and to be distributed therefrom equally to the upper part of the flame
through holes arranged in the sides of the cone.
The movement of the wick is effected by 3 pinions. A spindle carries one
pinion and two bevil wheels which engage with two other bevil wheels mounted
on spindles provided with pinions. The bevil wheels being of the same size a
uniform movement is given to the pinions also of uniform size and so a steady and
uniform movement of the wick is assured.
This movement is protected against dust and other foreign substances, by a casing
provided with perforations for the entrance of outer air. This casing fits tightly
round the burner and is attached to the cup shaped receptacle containing the movement
by a bayonet clutch.
The gallery carrying the lamp glass is fastened onto the burner by a guide resting
with its base on the casing. The guide only fits round the burner with its cylindrical
basis it then spreads out to a cone and exceeds the wick tube a little in height. This
guide is perforated around its top to enable a current of outer air to reach the wick or
the nascent gas. Another current reaches the flame higher up through the opening
of the cap.

page_text: I, ALFRED JULIUS BOULT of 323 High Holborn, in the County of Middlesex
M.I.M.E. 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 improvements in mineral oil lamps and is preferably
applied to a lamp receiving the air current from underneath the oil reservoir.
Reference being had to the accompanying drawings
Figure 1 represents a cross section of the lamp.
Figure 2 is a plan of the wick moving mechanism.
Figure 3 is the casing for the movement box perforated for the admission of a
current of outer air.
Figure 4 is a vertical section of the gallery carrying the glass and with the
peculiarly shaped guide.
Figure 5 are details of the cone for the equal distribution of the inner current.
•
The lower part of the air cone is provided with holes or annular openings to
enable the current of air supplied from underneath the reservoir to enter the cone p
and to be distributed therefrom equally to the upper part of the flame through holes o
and n arranged in the sides of the cone.
Figures 6, 7 and 8 represent a modification of the air cone and it consists in this
instance of a disc with turned down rim s t provided with holes the air current passing
underneath the rim and through the holes therein.
The movement of the wick is effected by 3 pinions 6 Figure 2. The spindle a
carries one pinion b and two bevil wheels c which engage with two other bevil
wheels c¹ mounted on spindles also provided with pinions b. The bevil wheels c
and c c being of the same size a uniform movement is given to the pinions b also
of uniform size and so a steady and uniform movement of the wick is assured.
This movement is protected against dust and other foreign substances by a casing d
(Figure 3) provided with perforations for the entrance of the outer air. This
casing d fits tightly round the burner and is attached to the cupshaped receptacle
containing the movement by a bayonet joint e.
с
Figures 9 and 10 represent a modification of the arrangement for the movement of
the wick and it consists of a simple ring u v of metal formed from a strip of metal out
of which the supports y for the spindles carrying the bevil wheels c c² c¹ and pinions b
are cut out and bent outwards the ends of the ring are then soldered together. To
fix this ring on to the wick tube it is sufficient to punch dents z into both when
placed together.

page_text: The gallery carrying the lamp glass is fastened onto the burner by a guide i.
The guide i only fits round the burner with its cylindrical base the upper part being
cone shaped and exceeding the wick tube a little in height. This guide is perforated
around its top to enable the current of the outer air to reach the wick or the
nascent gas.
Another current reaches the flame higher up through the opening
of the cap p.
Having now particularly described and ascertained the nature of the said invention
as communicated to me by my foreign correspondents and in what manner the same
is to be performed I declare that what I claim is :-
1. The method of moving the wick by means of three pinions mounted on spindles
and moved by the aid of bevil wheels substantially as and for the purpose specified
and represented in Figure 2.
2. The casing d provided with perforations ƒ for the entrance of the outer air
the said casing surrounding and protecting the wick moving arrangement substantially
as specified.
3. The support for the spindles carrying the pinions and bevil wheels of the
wick movement consisting of a single ring with the supports cut out and bent out
fastened to the wick tube by punching dents in both when placed together
substantially as specified.
4. The glass carrying gallery provided with the guide with cylindrical base
and conical top provided with perforations for the entrance of the outer air to the wick
substantially as specified.
5. The air cone as represented in Figure 5 which may be substituted for a
simple disc for the distribution of the inner air current to the flame substantially
as specified.
6. The disc with bent down rim provided with perforations for the distribution of
the inner air current to the flame substantially as specified.
נית
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