Improvements in Deadlights of Ships' Sidelight Scuttles and Windows.
Year: 1894

page_text: Date of Application, 14th Aug., 1894
Complete Specification Left, 9th May, 1895-Accepted, 15th June, 1895'
PROVISIONAL SPECIFICATION.
Improvements in Deadlights of Ships' Sidelight Scuttles and
Windows.
GEORGE NATHAN ARNISON the younger of 61 Fawcett Street Sunderland, in
the County of Durham, Engineer, do hereby declare the nature of this invention
to be as follows:-
My invention consists of an improved method of fitting deadlight shutters to all
types of sidelight scuttles and other windows fitted on board ships, whether round,
square, oblong oval or of other shape, and whether fitted in deck house coamings,
deck house sides, the ship's side, engine-room casing or elsewhere.
Hitherto inner deadlight shutters have been fitted and when hinged have had
their surfaces of contact (to form a watertight joint) between a spigot or projection
from the frame of the light proper (otherwise known as the glass frame) and
packing of india rubber or other suitable material fitted in a groove in the dead-
light; or vice versa. Hence if owing to the wear and tear of the packing or from
any other cause the frame of the light when closed was twisted or out of truth, a
perfectly watertight joint for the deadlight could not be obtained.
In my invention this drawback is entirely obviated, as I provide that the
deadlight shall not come into contact with the frame of the glass.
In one method of carrying out my invention I provide a spigot on the main or
foundation frame of the scuttle, port, or window preferably at or about the extreme
outer edge of the frame, and also provide in a corresponding groove in the deadlight
shutter, indiarubber or other suitable packing, so that when the deadlight is closed
and fastened there is a perfectly watertight joint, entirely independent of the
glass frame.
In a second method, I provide a groove fitted with suitable packing, in the main
or foundation frame of the scuttle, port or window near the outer edge of the frame
and also provide on the deadlight shutter, a spigot or projection, so that when
closed and fastened there is, as in the first method, a perfectly independent
watertight joint.
.....
My invention also provides for the fitting of hinged external deadlights, in which
the watertight jointing is provided by either of the methods described for internal
deadlights, so that the watertightness is independent of the condition of the frame
olding the glass.
Dated this Thirteenth day of August 1801
COMPLETE SPECIFICATION.
Improvements in Deadlights of Ships' Sidelight Scuttles and
Windows.
I, GEORGE NATHAN ARNISON the younger of 61 Fawcett Street Sunderland
in the County of Durham, Engineer 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 :-
My invention consists of an improved method of fitting deadlight shutters to all
Daina 77

page_text: types of sidelight scuttles and other windows fitted on board ships, whether round.
square, oblong, oval or other shape, and whether fitted in deckhouse coamings,
deck house sides, the ship's side, engine room casing or elsewhere.
Hitherto inner deadlight shutters have been fitted and when hinged have had
their surfaces of contact, to form a watertight joint, between a spigot or projection
from the frame of the light proper (otherwise known as the glass frame) and
packing of india rubber or other suitable material fitted in a groove in the
deadlight; or vice versa. Hence if owing to the wear and tear of the packing or
from any other cause the frame of the light when closed, was twisted or out of
truth, a perfectly watertight joint for the deadlight could not be obtained.
In my invention this drawback is entirely obviated, as I provide that the
deadlight shall not come into contact with the frame of the glass, as will be seen
on reference to the illustrations.
Fig. 1 shows an internal view of a sidelight with a partial view of a hinged
deadlight in an open position.
Fig. 2 shows a sectional view of a deadlight and sidelight in their closed
positions, and Fig. 3 shews a partial view similar to Fig. 2 but with an alternative
arrangement of detail.
In one method of carrying out my invention I provide a spigot A. on the main
or foundation frame D of the scuttle, port, or window, preferably at or about the
extreme outer edge of the frame as shewn in Fig. 2, and also provide in a
corresponding groove B in the deadlight shutter C indiarubber or other suitable
packing, so that when the deadlight C is closed and fastened, there is a perfectly
watertight joint, entirely independent of the glass frame G. The deadlight C may
also be loose and entirely independent of the sidelight main frame D, and
secured by two or more hinged bolts and nuts, or in any other suitable manner.
The deadlight C may be fitted either internally or externally as may be most
convenient.
In a second method, (see Fig. 3), I provide a groove E fitted with suitable
packing in the main or foundation frame D, of the scuttle, port, or window, near
the outer edge of the frame D, and also provide on the deadlight shutter, a spigot
or projection F, so that when closed and fastened there is as in the first method a
perfectly independent watertight joint. As already described in connection with
the first method the deadlight C may also be loose and entirely independent of the
sidelight main frame D and may be fitted either internally or externally and may
be secured in any suitable manner.
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 :-
An inner or outer deadlight with a spigot or groove at or near its outer edge,
engaging with a groove or spigot on the main frame of a sidelight scuttle or other
similar opening.
Dated this Eighth dow of Man 1005