Improvements in Lanterns.
Year: 1896

page_text: Date of Application, 27th Nov., 1896-Accepted, 6th Feb., 1897
Improvements in Lanterns.
We LUDWIG SCHMITT and FRIEDRICH SCHMITT, Engineers of Mannheim
in the Empire of Germany 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 lanterns and has for object a lantern for
velocipedes and other vehicles, the lantern being so constructed as to ensure an
increased luminous effect. In the annexed sheet of drawings, Fig. 1 illustrates a
cycle lantern constructed according to the present invention, and Figs. 2 and 3.
represent details respectively in vertical and horizontal section.
The reflector A (Fig. 1) consists of two parabolic mirrors a and b connected with
each other at c. At the junction of the two mirrors a furrow or flute d is provided
which is cut out sufficiently to form an open slot c for the reception of a transparent
pane or disk f, made of glass, selenite, or other suitable material and retained in
position by spring g. In this manner the enclosed hollow space o is formed which
serves to receive the upper extremity of the wickholder 7.
Owing to this arrangement the lantern developes a cousiderable luminous power
as the flame is made to burn very steadily as it cannot flicker and consequently
not smoke, and in order to admit of the passage of air the upper as well as the
lower part of the cylindrical space o are each provided with one aperture or
perforation.
Instead of one transparent disk f, two of them and f' as shown in Fig. 2 may
be employed to form the enclosed hollow space and in this arrangement two slots e
and two springs g have to be provided.
Or the wickholder / may be surrounded by an elliptical transparent mantle /³,
which in this case represents the before described hollow space o.
For the purpose of still further increasing the luminous power of the lantern
previously warmed air is being conveyed towards the flame by an arrangement
which at the same time serves to prevent the calorific intensity radiating from the
lantern from eflecting the oil reservoir. To attain this end we surround the
apertures m through which the air for combustion has to pass with a perforated ring i,
the latter representing a prolongation or extension of the lantern n. In this
manner the air for combustion is compelled to pass through ring i to receive the
heat radiating from the flame and to simultaneously cool the upper portion of the
oil reservoir, while the lower part of the latter is enveloped by a perforated
mantle which also is in communication with air holes m.
Having now particularly described and ascertained the nature of our said
nvention and in what manner the same is to be performed we declare that what
we claim is :-
1. A new or improved lantern having a reflector composed of two parabolic
mirrors and forming a laterally terminated hollow space o which encloses the
wickholder and admits air for combustion, for the purpose of increasing the
illuminating power of the lantern, substantially as described and illustrated in
he drawings.
2. A constructional variation of the lantern claimed under No. 1. in which the
space o is formed by two transparent disks or panes which are provided within the

page_text: reflector, composed of two parabolic mirrors substantially as described and shown in
Fig. 2 of the accompanying drawings.
3. A variation in construction of the lantern claimed under No. 1 in which the
hollow space o is formed by an elliptical transparent mantle within the reflector
composed of two parabolic mirrors, substantially as set forth and illustrated.
4. A form of construction of the lantern claimed under No. 1 in which the air
for combustion to be admitted into the hollow space o, is, before entering into the
lantern conducted through a perforated ring and a similarly perforated mantle
which surround the oil reservoir for the purpose of increasing the illuminating
power still further by previously heated air for combustion, and at the same time
protecting the oil reservoir from the heat radiating from the flame, substantially as
described and illustrated in the accompanying drawings.
Dated this 27th day of November 1896.
HUGHES, ELI & HUGHES,
For the Applicants.