Improvements in Caps or Covers for Lamps.
Year: 1891

page_text: Date of Application, 16th Sept., 1991
Complete Specification Left, 4th June, 1892-Accepted, 3rd Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in Caps or Covers for Lamps.
THOMAS FLETCHER BRAIME Elm House Rothwell near Leeds in the County
of York Engineer do hereby declare the nature, of this invention to be as
follows:-
My invention has for its object an improved method and means for covering and
stoppering the feedholes of bunker lamps.
In order to carry out my invention I stamp or otherwise make a suitably sized
metal ring or short tube, the outer diameter of which corresponds with the inner
diameter of the hole in the top of the lamp, and into which the said ring or tube is
soldered. The said ring or tube may be either parallel or it may taper slightly
towards its centre at its underside, and the upper end or edge of the ring or tube
may be flanged outwardly to strengthen the same if necessary.
I then stamp or otherwise make a suitably sized metal cap or cover, the diameter of
the said cap or cover being slightly larger than the diameter of the aforementioned
ring or tube; the said cap or cover may have at its underside a downwardly
projecting flange the outer diameter of which flange, corresponds with the inner
diameter of the metal ring or tube, and into which ring or tube the cap or
cover fits.
In the middle of the cap or cover, I make through it a suitably sized hole, I
then bend or form a suitably shaped piece of metal or wire into the shape of a
cotter pin with an eye or hole through one end, and to open at its other end,
around the said cotter or pin, I then place a suitably sized coiled, metal or other
spring, I then pass the ends of the cotter or pin through the hole in the cap or
cover at its upper side the ends of the said cotter or pin projecting a suitable
distance through, are then opened or loosely rivetted, so as to secure the cotter or
pin and the spring to the cap or cover.
In order to secure the cap or cover to its seating and to ensure the tight fitting
of the same, I make the handle of the lamp to project a suitable distance over the
top of the lamp, and at a suitable height from the top of the same.
I then pass
the handle which has an indent or groove in it, through the eye or hole in the end
of the cotter or pin, until the said cotter or pin with the cap and spring, come
directly over the hole at the top of the lamp.
When the cap or cover is in position, the spring is in compression, between the
underside of the handle and the top of the cap or cover, forcing or holding the said
cap or cover downwards to its seating. To take off the cap or cover I raise the
said cap which further compresses the spring and then swivel the same sideway
clear of the hole in the top of the lamp, the spring holding the cap or cover
suspended in any desired position.
Or in lieu of the above method of fixing the loose cotter pin to the cap or cover,
I may make the same solid with the cap and provided with an oblong hole at its
top or end through which the handle passes, so as to allow the spring to act, and
the cap to rise and fall when desired to take it off or put it on.
Dated this Fifteenth day of September 1891.

page_text: COMPLETE SPECIFICATION.
Improvements in Caps or Covers for Lamps.
I THOMAS FLETCHER BRAIME Northern Works Brookfield Street Hunslet
Leeds in the County of York 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 :-
The object of this invention is to make the filling hole cap or cover of a lamp so
that it may be readily opened or closed and to secure it so that it cannot get lost
or out of order as in the case of a screw cap and chain or as in the ordinary
manner.
I will explain my invention more in detail by making reference to the accom-
panying drawings.
Fig. 1 which represents an elevation partly in section of a lamp made according
to my invention and shewing the cap or cover in position when closed.
Fig. 2 represents the lamp opened for filling and shewing the cap or cover
swivelled from its seating and held up by means of the spring being in compression
between the handle or member of the lamp and the cap or cover.
A is the body of a lamp.
B is a taper, outwardly flanged round metal ring which is soldered or otherwise
secured to the top or filling hole of the lamp body A.
C is a metal cap or cover which may be stamped in suitable dies, or turned,
and which cap or cover has a downwardly projecting part D tapering inwardly
towards the centre, and corresponding to the interior of the metal ring B. so that
when the two are placed together, they form a valve. Through the centre of the
said metal cap or cover C. I make a suitably sized hole.
E is a spiral spring made of any suitable material which when the cap or cover C
is in its place is in compression between the top of the said cap or cover C and
the handle of the lamp F.
G is a cotter or piece of metal formed into a suitable member, through the eye
of which the handle F is passed the sbank of the said cotter G is then passed
through the spiral spring E and then through the hole in the centre of the cap or
cover C, the end of the cotter is then loosely rivetted or opened at the underside
of the cap or cover, thus securing the said cotter, spring, and cap to the handle of
the lamp as required.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The employment of the cover C in combination with the cotter G the spiral
spring E and handle F substantially as and for the purposes shewn and described.
Dated this Second day of June 1892.
THOMAS FLETCHER BRAIME.