Shade for Ship's Telegraph.
Year: 1898

page_text: Shade for Ship's Telegraph.
I, JOHN OWEN DOLMAN, of 22, Springfield Road, Tottenham, County of
Middlesex, Master Mariner, do hereby declare the nature of this invention
to be as follows:-
The object of this invention is to shade the excessive glare of light which
shines through the face of a Chadburn's or other ship's telegraph at night when
the electric or other light is turned on. Formerly it was customary to shade
the face by pulling a canvas or other cover over it and removing this latter
every time the telegraph handle had to be shifted.
This not only was very inconvenient but rendered the telegraph useless in
cases of emergency.
The object of my invention is to do away with this canvas cover and sub-
stitute for it a shade.
This shade or cover consists of a sheet brass plate, circular, and of the same
diameter as the face, clamped or otherwise made secure to the handle of a
ship's telegraph, in such a manner as not to move except with the handle.
Upon this sheet of brass I provide an opening which can be closed by the
sliding of a small shutter. The object of this opening is to shew in what posi-
tion the indicator is.
This invention can be used on either a single or double ship's telegraph.
I do not limit myself to any particular form of clamp or other fastening.
My invention can be used at all times without interfering with the manipu-
lation of the telegraph.
13
1 11
L 1
בד.
1
1000
I, JOHN OWEN DOLMAN, of 22, Springfield Road, Tottenham, County of
London, Master Mariner, 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:-
The object of this invention is to shade the excessive glare of light which
shines through the face of a Chadburn's or other ship's telegraph at night when
the electric or other light is turned on. Formerly it was customary to shade
the face by pulling a canvas or other cover over it and removing this latter
every time the telegraph handle had to be shifted.

page_text: This not only was very inconvenient but rendered the telegraph useless in
cases of emergency.
The object of my invention is to do away with this canvas cover and sub-
stitute for it a shade.
On the accompanying drawing,
Figure 1 represents a ship's telegraph fitted with my invention, and,
Figure 2, the shade and shutter drawn to a larger scale.
The shade or cover consists of a circular sheet brass plate A clamped or other-
wise made secure to the handle B of a ship's telegraph, in such a manner as not
to move except with the handle. Upon the sheet of brass I provide an open-
ing C made for the purpose of ascertaining in what position the indicator is
which can be closed by the sliding of a small shutter D, guided in a slot E cut
in the plate A. The shutter D is fitted with a tail F the purpose of which is
to prevent any light shining through the slot on the shutter being closed.
This invention can be used on either a single or double ship's telegraph.
I do not limit myself to any particular form of clamp or other fastening.
My invention can be used at all times without interfering with the manipu-
lation of the telegraph.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is;-
A shade for ship's telegraph consisting of a circular sheet brass plate clamped
or otherwise fastened to the handle of the said telegraph and capable of being
moved thereby; a sliding door being provided in the said shade whereby the
position of the indicator may be ascertained, a tail provided on the said shutter
for the purpose of covering up the slot in the plate when the shutter is closed;
the object being to prevent the excessive glare of light which shines through the
face of the telegraph, substantially as described.
Dated this Twenty seventh dow of TL
1000