Improvements in or relating, to Side Lights of Vessels.
Year: 1892

page_text: Sweden),
Date of Application (in United Kingdom), 26th July, 1892
Complete Specification Left, 26th July, 1892-Accepted, 8th Oct., 1892
I COMPLETE SPECIFICATION.
Improvements in or relating, to Side Lights of Vessels.
ERNST WILHELM ANDRÉE, Nya Sjömanshemmet of Gothenburg, in the
Kingdom of Sweden, Sea Captain 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 :—-
In order to be able to ascertain from the inside of a ship whether the lantern
at the ship's side is alight many different arrangements have been proposed none
of which however have been found to be of any practical use owing to the fact
that they have been either too complicated and unreliable or deficient. This
invention relates therefore to a simple arrangement that will indicate to those on
board whether the lantern is alight or not.
In the accompanying drawings
Fig. 1 represents the said lantern in vertical section and Fig. 2 the same in
horizontal section.
Fig. 3 shows schematically the deck of a ship on which the said lanterns are
applied.
In order that the lantern may be observed from a point within the ship the
lantern is provided obliquely to the flame with one or more reflectors a by means
of which part of the light is thrown inside the vessel through an opening b in the
back of the lantern. This opening may be formed at any suitable part towards
the upper part of the lantern and is conveniently provided with a pane of glass.
Through a screen attached to the stand which supports the lantern is made a hole
into which is inserted a short pipe c and through this hole the rays of light are
reflected. The pipe e can also be fixed directly to the lantern in front of the
hole as shown on the drawing. A larger hole is then made in the screen of the
lantern the glass pane being suitably applied to the end of the pipe which is
directed towards the ship. In order that the light passing through the pipe may
not be visible to meeting ships, the pipe is directed somewhat upwards or downwards
depending on how the screen is placed and the position of the reflector has of
course to be made to correspond. The pipe can be wider at the end directed
towards the ship, in order that the light may be visible more conveniently from
different places fore and aft, the main direction of the pipe should however be
such for instance that the man at the wheel may always see whether the lanterns
are alight. There may also be two looking tubes superposed, the upper one
directed somewhat upwards and the other somewhat downwards. On the drawing
d designates the lamp, e the ordinary reflector, and the lens. In Fig. 3 it will be
seen how the lanterns gg throw light to the wheel.
The reflector a need not be a separate part but may form part of the lantern
itself or in certain events it may be a reflecting coating applied on some part of
the lens f

page_text: Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is,―
1. At ships and other lanterns the arrangement in addition to the common
reflector of other reflectors one or more applied in the lantern obliquely to the
flame which lanterns through one or more opposite openings in the wall of the
lantern throw the light in another direction than that towards which the lens of
the lantern or the glass pane corresponding thereto is directed in order that the
lantern may be controlled from a point (for instance the captain's bridge) which is
not located in the range lit up by the lantern or by the glass pane corresponding
to it.
2. The modification of the arrangement described in Claim 1 that the one
reflector is constituted by a part of the very wall of the lantern or by the lens (ƒ)
provided partly with a reflecting coating.
Dated this 26th day of July 1892.
W. P. THOMPSON & BOULT,
Agents for the Applicant.