Year: 1887

page_text: Date of Application, 19th Aug., 1887
Complete Left, 18th May, 1888
Complete Accepted, 22nd June, 1888
[, JOHN MCKIRDY of No. 34 Leadenhall Street in the City of London, Marine
Superintendent do hereby declare the nature of this invention to be as follows:-
My invention has for its object to dispense with the circular opening side lights
now generally used for ships, deck houses and other superstructures of a similar kind,
and to substitute for them a square door, opening on hinges and having an immovable
glass light set in the middle of it.
According to my invention I make the frame square and hinge to it a square door
to fill the aperture, which, aided by rubber or other convenient packing is rendered
water tight when closed.
In the centre of the square door before mentioned I insert a circular glass light
enclosed in a metal cylinder.
Over the inner end of this cylinder I place a metal ring capable of being rotated
thereon and having projecting therefrom 4 or any other desired number of lugs having
inclined outer faces while on the frame are a corresponding number of projecting
loops, so that when the hinged door with its light is closed against the frame and the
ring with its lugs is turned somewhat, the lugs pass underneath the loops and by
means of their inclines draw the door tight against the frame. The ring may for this
purpose be provided with one or more projecting spokes, or by preference I form
holes in its circumference into which is inserted a stud on a lever partly fitting round
the circumference of the ring, by means of which the ring can be turned with
sufficient force to insure a water tight fit.
..
S At 1887
ABEL & IMKAY,
Agents for the Applicant.

page_text: 1, JOHN MCKIRDY, of No. 34 Leadenhall Street in the City of London Marine
Superintendent, 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 relates to port hole lights for ship's sides, deck-houses and like
structures, and has for its object to substitute for the usual circular openings, square
doors opening on hinges and having immoveable glasses set in them as I will describe
referring to the accompanying drawings. Fig. 1 is a front view inside, and Fig. 2
is a vertical section of a port hole light according to my invention. Fig. 3 is a front
view and Fig. 4 a vertical section of a port opening similarly arranged and fastened
but without a glass. Fig. 5 is a front view inside and Fig. 6 a sectional plan of a
port hole light somewhat modified; Fig. 7 is a front view inside and Fig. 8 is a
vertical section of a port hole light fitted on from the inside. In all the figures
similar letters denote corresponding parts.
I make the frame A square and hinge to it a square door B, providing a packing C
of rubber or other suitable material to render the closure air tight or watertight.
For a light, as shewn in Figs. 1 and 2, 5, 6, 7 and 81 fix in the door B a circular
glass D within a cylindrical frame E. Or when no glass is used as in Figs. 3 and 4,
I fix the cylindrical frame E to the door B. On the frame E I fit a ring F that can
be rotated, this ring having several, preferably four, lugs G having inclined inner 2
faces projecting from it. On the frame A I provide a corresponding number of
slightly projecting facing pieces H somewhat sloped all in one direction. When the
ring is turned so that the lugs G are brought into the position shewn in Fig. 7
or to the position indicated by the dotted lines G'in Fig. 3, the door B can freely
open on its hinges. But, on closing the door and turning the ring F partly round 2
so as to bring the lugs G on to the sloped faces H, the door. is drawn tightly against
the frame packings C. The ring F can be turned by a lever inserted into holes K in
its circumference as shewn in Fig. 3, or an internally toothed segment rack L being
fixed on the ring F as shewn in Figs. 1 and 7, a pinion key M can be introduced so
as to gear with the rack and the ring F can be rotated by turning the key. Or an 3
externally toothed rack as shewn in Fig. 5 may gear with a pinion M which is mounted
on the door frame and can be turned by a key.

page_text: 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 :-
For a ship's port hole light or similar opening the combination of a square hinged
door having on it a cylindrical frame fitted with a ring having lugs that can be
rotated so as to bring them over inclined pieces on the door frame, substantially as
and for the purpose herein set forth.