Improvements relating to Lamps and Lanterns.
Year: 1892

page_text: Date of Application, 3rd Sept., 1892.
Complete Specification Left. 19th May, 1893-Accepted, 22nd July, 11893.
PROVISIONAL SPECIFICATION.
Improvements relating to Lamps and Lanterns.
I, FREDERICK CHARLES HOWELL of 225 Peckham Ryc in the County of
Surrey, Clerk in the Admiralty do hereby declare the nature of this invention
to be as follows:-
This invention relates to a novel mode of construction of lanterns used for the
internal lighting of ships or buildings, the objects to be obtained being:
--
A. That one form of lantern shall be capable of being used for any of the following
purposes
1st. As a wing lantern, to be fixed against the side of the compartment or room
and lighting the space in front and on each side of itself.
2nd. As a bulkhead lantern, that is as fixed in a bulkhead or partition between
two compartments and lighting both.
3rd. As a deck or hanging lantern suspended from the ceiling or roof of a
compartment and lighting all round itself.
When fixed in any of the before mentioned positions the lantern shall not
be capable of being moved away or opened except by a person provided
with a proper key.
4th. As a hand lantern showing a light all round and capable of being
conveniently carried about as required.
. B. That the, lantern be so constructed that in case any part of it should be
damaged or broken it may easily be repaired or replaced by any unskilled person
such as the ordinary lamp-trimmer on board ship.
C. Reduction of space.in. storing and packing.
To obtain these results I construct the lantern as follows,―
I take a hexagonally shaped sheet of metal about eight' inches in its greatest
diameter with a circular opening of about four inches diameter in the centre called
the base plate.
A strip of metal about one and a half inches wide is bent and secured into a six
sided' figure with a circular hole about three quarters of an inch in diameter in the
centre of one of its sides. This rim is made to fit on the outer edge of the
base plate.
Another strip of the same width as the rim is bent and secured into a circle to
fit on the opening in the base plate and is called the collar. This also has a three
quarter inch hole drilled through it and is provided with three projections on its
inner face.
A tubular lock is prepared of such 'dimensions that when it is fixed in the holes
of the rim and collar the key-hole end is flush with the outer face of the rim and
the spring bolt at the other end projects into the inside of the collar.
Another hexagonal plate, called the binding plate, is prepared somewhat smaller
in diameter than the base plate but with the same sized opening in the centre.
Six bars are provided each about twelve inches long and in section of such a
shape that they fit into the angles of the rim, with slots into which the edges of the
glass plates easily slide. They have also a small projecting pin or stud about an inch
from each end so fixed that when the bars are in position the pins all point towards
the centre of the lantern.
The candlestick is formed of a circular flat bottomed dish with perpendicular
sides, made to fit into the collar, and with three projections on its outer face so
arranged that when the candlestick is pushed up the opening in the collar and
slightly turned the projections are caught by those inside the collar and by the
spring bolt of the lock and the candlestick so secured that it cannot be removed
without the use of a suitable key.

page_text: 719
In order to build up the lantern for use the base plate, collar, rin, and lock are
laid in their respective positions, six bars are placed. upright in the angles of the
rim, the binding plate is then pressed down on the projecting studs and the whole
is firmly screwed together by three bolts passing through the two plates. Sheets
of glass, or a combination of glass and ventilator as may be found necessary, are
then slipped into the spaces between the bars, and the upper part is bound together
by a repetition of the operation of building up the lower part, so that the top. and
bottom of the lantern are precisely alike. The portion of the lantern so constructed
is called the body and is the same, except the glasses, for all the purposes for which
the lantern is intended to be used.
When required for use as a hand lantern suitable chimney with handle is
fixed in the upper collar by the same means as the candlestick is locked in the
lower one.
A modification of the handle, having a loop and lock at the top, is used to fix the
lantern to a staple in the ceiling as a hanging lamp.
When required for use as a wing lantern three of the glasses are removed, the
centre vacant space is filled by a plate the upper portion of which is a reflector and
in the lower part is an opening and a hinged catch so arranged as to lock the
lantern to a suitable staple fixed to the wall of the compartment. The other two
spaces are filled with plain reflectors.
For use as a bulkhead lantern three ground or semi-opaque glasses are substituted
for clear ones and the lantern is locked into a suitable framework fitted in the
opening of the partition or bulkhead.
1003
F. C. HOWELL.
COMPLETE SPECIFICATION.
Improvements relating to Lamps and Lanterns.
I, FREDERICK CHARLES HOWELL of 225 Peckham Rye in the County of
Surrey, Clerk in the Admiralty do hereby declare the nature of this invention and
n what manner the same is to be performed, to be particularly described and
ascertained in and by. the following statement:—
This invention relates to a novel mode of constructing lanterns used for the
internal lighting of ships or buildings, the objects to be obtained being:-
A. That the one form of lautern shall be capable of being used for any of the
following purposes:-
7
1
(1) As a wing lantern, to be fixed against the side of the compartment or room,
lighting the space in front and on each side of itself.
(2) As a bulkhead lantern, that is as fixed in a bulkhead or partition between
two compartments and lighting both.
(3) As a deck or hanging lantern suspended from the ceiling or roof of a
compartment and lighting all round itself.
When fixed in any of the before mentioned positions the lantern shall not be
capable of being moved away or opened except by a person provided with
a proper key.
(4) As, a hand lantern showing a light all round and capable of being
conveniently carried about as required.
B. That the lantern, be so constructed that, in case any part of it be damaged or
broken it may easily be repaired or replaced by any unskilled person such as an
ordinary lamp-trimmer on board ship.
C. Reduction of space in storing and packing.
To obtain these results I construct the lantern as follows, and as illustrated in
the several drawings shown on the sheet which accompanies this Specification,
wherein :- "
Fig. 1, A shows the plan of the base and cap of the lantern (the base inverted
forms the cap).
1

page_text: A shows front view of the foregoing.
A' shows section of the foregoing through the dotted lines O, O.
Fig. 2, B front view (enlarged) of uprights or bars with section sketched
on same.
B' side view of same, showing stops S, S, to fasten the bars in position.
Fig. 3, elevation of body of lantern showing a section of combustion head (H¹)
and handle.
Fig. 4, plan of inner ring or collar showing the lugs (L, L, L,) to which the lamp
or candle holder or tray and combustion head are secured.
Fig. 5, C, plan of inner or binding plate.
C plan of outer or base plate.
Fig. 6 enlarged view of catch showing the method of locking any of the lugs (L')
attached to the lamp or candle holder or tray and to the combustion head.
Fig. 7, D reduced elevation of metal frame, showing the method of securing the
lantern between two rooms or compartments.
D' plan of foregoing showing the door open ready for lantern.
Fig. 8 E reduced elevation of metal slide plate to fit the grooves in bars B and
take the place of one of the glasses, also showing reflector and slot for fixing lantern
to the wall.
E' reduced elevation of wall plate fixed to wall of compartment.
E side view of the foregoing showing the metal slide plate E held in position by
the cam F.
E plan of the foregoing.
To build up the lantern the base plate C, the collar Fig. 4, and the hexagonal
outer rim shown in A2 are laid in their respective places, a tubular lock is fixed in
the circular openings of the collar and rim in such a way that it engages into the
square hole of the catch Fig. 6, six of the bars Fig. 2 are placed in position, the
binding plate C is pressed down on to the stops of the bars, and the two plates are
firmly screwed together by three bolts passing through the holes shown in each.
Glasses are then slipped between the bars and the cap is built up as the base was.
The portion of the lantern so constructed is called the body and is the same
(except the glasses) for all the purposes for which the lantern is intended to be used.
The lamp or candle holder is a metal tray with upright sides having on its outer
sides three lugs or projections (L') which engage the corresponding projections on
the inside of the collar, forming what is known as a "bayonet" catch, when the holder
is pushed up the collar and slightly turned.
A modification of the handle, having a loop and lock at the top, is used to fix the
lantern to a staple in the ceiling for a deck or hanging lantern.
When required for use as a wing lantern three of the glasses are removed, the
middle vacant space is filled by the metal slide shown in Fig. 8 E, the other two
spaces filled with reflectors, and the lantern is fixed to the staple or wall plate
shown in Fig. 8 E¹, E and E³.
For use as a bulkhead lantern the handle is removed and the remainder of the
lantern locked in the metal frame shown in Fig. 7.
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 :-
1. The construction, arrangement, and combination of the several parts forming
the improved lantern substantially as hereinbefore described and shown on the
accompanying drawings.
2. The arrangements for fixing the lantern when used either as a wing or
bulkhead lantern.