Improvements in Ships' Side Lights.
Year: 1899

page_text: Improvements in Ships' Side Lights.
I, ALEXANDER ROBERTSON, of 6, Dawson Terrace, Carron, in the County of
Stirling, Engineer, do hereby declare the nature of this invention to be as
follows:-
· This invention which relates to ships' side lights, has for its object to provide
the glass frame or holder with a swivelling motion. in addition to and in con-
junction with the ordinary hinge used for opening and closing the light. Further
providing the swivelling glass-holder with an inside hinged shutter and a lock-
ing device for fixing the said shutter in its open position.
On the ship's side frame two hinge jaws or lugs are cast or fitted which take
corresponding lugs formed on a semicircular yoke or bracket on which the glass
holder is pivotted. On the ends of the arms and diametrically opposite to each
other a trunnion is fitted or formed which works in corresponding sockets in the
glass holder. The yoke is formed with an inwardly projecting flange which bears
on the face of the glass holder when the light is. shut. When the light is not
required to swivel the yoke may be made fast to the glass holder by a set screw
or any other suitable means.
The shutter is hinged to the ship's side frame in the same manner as the yoke
but having an elongated hole for the hinge pin which permits of the shutter being
drawn slightly forward on being opened and on pushing it back again it brings
a hooked lug formed on the back of the shutter under a locking pin fixed in the
shutter hinge lugs. By these means the shutter is securely locked in its open
position.
Improvements in Ships' Side Lights.
I, ALEXANDER ROBERTSON, of 6, Dawson Terrace, Carron, in the County of
Stirling, 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:-
This invention has for its object to provide means whereby the glass holder
can be made to swivel in addition to the ordinary hinge movement. Further
providing the swivelling glass holder with an inside hinged shutter and a locking
device for keeping the said shutter in an open position.
And in order that my invention and the manner of performing the same may

page_text: be properly understood I hereunto append a sheet of explanatory drawings. In
these drawings the same reference letters are used to mark the same or like parts
wherever they are repeated.
Fig. 1 is a sectional side elevation, Fig. 2 a front elevation and Fig. 3 a side
elevation. In these figures the light is shewn closed but the dotted lines in Fig. 1
shew the shutter in its open position. Figs. 4 and 5 are side elevations shewing
the parts necessary for explaining the invention only.
On the ship's side frame A are cast two hinge lugs a a to which is jointed by
means of a pin a¹ a yoke B having lugs b, b through which the pin a¹ passes. On
the ends of the arms of the yoke B and diametrically opposite each other
trunnions b¹ 61 are fitted which work in corresponding sockets in the glass
holder C. The yoke B is also provided with an inwardly projecting flange which
bears on a lip c on the glass holder C when the light is closed. This arrange-
ment ensures the glass holder C bearing equally on its rubber seating when the
usual binding nuts 1) are screwed up. The glass holder C has fixed in it a pin c
which works in a quadrantal slot in the yoke arm. The outer end of the pin c
is screwed and is provided with a milled or other nut c² for jamming the glass
holder C to the yoke B at any angle required. Fig. 4 shews the side light adjusted
to work as an ordinary light and Fig. 5 as a swivel light. In these figures
(4 and 5) only the parts necessary for explaining the invention are shewn.
The shutter E has an elongated hole through which the hinge pin a¹ is passed.
It is also provided at its back end with a hook. On the shutter E being opened
and drawn slightly outwards it allows the hook to clear a fixed locking pin e
(Fig. 1) then by reversing the action the hook is brought underneath the pin e
and the shutter thereby secured in its open position as shewn by dotted lines
Fig. 1. The usual binding nut D¹ is employed for keeping the shutter closed.
The shutter instead of being hinged to the same pin as the yoke may be hinged
on a separate pin in any suitable position on the ship's side frame.
The shutter locking device is applicable to side lights other than that herein
described.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1st. The combination of parts constituting the improved side light with refer-
ence to the drawings annexed.
2nd. The yoke for carrying, binding, and adjusting the glass holder all sub-
stantially as herein before described with reference to the drawings annexed.
3rd. The shutter locking device all substantially as hereinbefore described
with reference to (Figs. 1, 2 and 3) the drawings annexed.
Dated this 23rd day of January 1900.