MENTS IN THE CONSTRUCTION OF SHIPS SIGNAL LAMPS
Year: 1885

page_text: I SAMUEL JENKINSON 108 Danville Street, Sheffield in the County of York
Ships Lamp Maker do hereby declare the nature of my said invention for IMPROVE
MENTS IN THE CONSTRUCTION OF SHIPS SIGNAL LAMPS to be as follows:-
My invention of improvements in the construction of ships signal lamps refers
more particularly to arrangements to prevent the breakage of the glasses or globes
of such lamps, and also to providing a ready means of replacing such glasses or
globes when they do get accidentally broken, and this without the aid of skilled
labour.
Ships Signal Lamps are made with a cage or wire frame round the glass to
protect it from breakage, while being run up to the mast head or other position ;
the vertical bars being rivetted to the top and bottom part of the lamp frame, so
that when a glass is broken through any cause (but generally from concussion
produced by being lowered too quickly on deck) it requires skilled labour to
unrivet and afterwards refix the Cage.
In carrying out my invention I make the vertical bars (of which I prefer to use
four to a lamp), of a flat cross section, the edge being towards the glass, the bottom
ends being rivetted or screwed to the bottom part of the lamp frame, and the top
ends, provided with a vertical bolt hole, fit into suitable lugs tixed to the top part
of the lamp frame, and are finally secured by a small bolt and nut passed through
each lug and bar.
One or more, but preferably two horizontal wire rods, are secured to the vertical
bars by being passed through holes pierced 'through their flat sides, and I secure
the lanyard rings to the flat side of the vertical bar, by means of the horizontal
wire rod ends being rivetted to the rings, but leaving the rings clear of obstruction
inside. It will thus be seen that to replace a broken glass, it is only necessary to
unscrew the four small bolts before mentioned, which releases the top part of the
lamp frame, and the glass.
To prevent as far as possible the breakage of glasses by concussion, I place.
between the edges of the glass, and the two parts of the lamp frame, elastic
rings, the said parts being all bound together by means of the bolts and nuts before
mentioned.

page_text: COMPLETE SPECIFICATION.
Improvements in the Construction of Ships' Signal Lamps.
I, SAMUEL JENKINSON 108 Danville Street Sheffield in the County of York
Ships Lamp Maker do hereby declare the nature of my invention for IMPROVE-
MENTS IN THE CONSTRUCTION OF SHIPS SIGNAL LAMPS and in what manner, the
same is to be performed, to be particularly described and ascertained in and by
the following statement, that is to say :-
My invention of improvements in the construction of Ships Signal Lamps refers
more particularly to providing ready means for replacing broken glasses without
the aid of skilled labour, and to the better protection of the glasses from accidental
breakage.
Usually such signal lamps are made with a cage or wire frame placed round the 1
glass to protect it, while being run up to the mast head, or otherwise used, the
vertical bars being rivetted to the top and bottom part of the lamp frame so that
when from any cause the glass is broken, it requires skilled labour to unrivett and
afterwards to refix the cage and vertical bars.
I annex a sheet of drawings in order that my invention may be clearly seen and
understood.
Fig. 1, being an elevation of a lamp made according to my invention.
Fig. 2, being a section showing how the elastic ring is held.
In carrying out my invention, I make the vertical bars A, of which I preferably
use four to a lamp, of a flat cross section, the edge being towards the glass B, the
bottom ends A¹ being either rivetted or screwed to the bottom part of the lamp
frame C, and the top ends A2-having a vertical bolt hole, fit against the lugs D,
which are rivetted to the top part of the lamp frame E, being finally secured by the
bolt and nut F, passing through the lug and the bar.
One or more, but preferably two, horizontal rods G, G³, are secured to the
vertical bars A, by being passed through holes in their flat sides at H, and I secure
the Halliard rings I to the flat side of the vertical bars by means of the horizontal
wire, preferably by rivetting the end of the wire into the side of the ring, but in
any case leaving the ring clear inside.
It will thus be seen that to replace a broken glass it is only necessary to unscrew
the nuts of the bolts F, which releases the top of lamp E, and the glass B.
For the purpose of reducing the risk of accidental breakage of the lamp glass,
which generally results from the lamp being lowered too quickly on the deck,
I place between the flanges of the glass B, and the two parts of the lamp C and E,
elastic rings J of any suitable material, the whole of the parts being bound firmly
together by the bolts and nuts F.
When therefore the lamp is run down on to the deck, the concussion is reduced
by the cushions of elastic materal J, and the breakage of the glass prevented.
5

page_text: Having now particularly described and ascertained the nature of my said
invention and the manner in which the same is to be performed, I declare that
what I claim is
The manufacture of ships signal lamps constructed for the purpose specified,
substantially as herein before described and illustrated.
ROBT F. DRURY,
Agent for the Applicant.