Year: 1886

page_text: I, THOMAS COOPER JOHN THOMAS, of 54, Minories in the county of Middlesex,
Engineer, do hereby declare the nature of this invention to be as follows:-
In some lamps a glazed chamber or chambers is or are combined with a metal
chimney, the, chamber or chambers being of greater width or diameter at the outer
end or ends than at the point or points of junction with the chimney. Lamps of this
kind are described under various modifications in the specifications of former patents
of mine, including No. 688 dated 19th February 1878, No. 2604 dated 26th June
1880, and No. 6753 dated 24th April 1884.
Now my present invention has reference to certain improvements in lamps of the
kind above referred to.
In order to ensure that the top of the burner cone shall be always at an uniform
distance above the top of the wick tube, and to enable the glazed chamber or chambers
and chimney to be readily removed and easily cleaned and replaced, I now adopt the
following arrangement: The burner cone is made separate from the chamber or
chambers and chimney and forms a fixed part of the burner, and the chamber or
chambers is or are provided with a short tube suitably formed to slide over the
burner cone which is thus made to receive and hold in place the chamber or chambers
and chimney. And in order that the glazed cover or door or doors may be readily
opened for cleaning and to afford access to the interior of the chamber or chambers
and to obviate the risk of mislaying or losing the doors that exists when they are as
heretofore has been usual, made separate from the chamber or chambers and arranged
to be fastened by a bayonet joint or equivalent. I secure each cover or door by a
hinge pin or pivot having its axis parallel to that of the chamber, and provide a stop
to arrest and retain the cover or door in the closed position. With this arrangement
the doors can always be readily opened but there will not be any liability to accidental
D017

page_text: opening thereof. In some cases I secure the glass in the frame by means of a split
ring, which arrangement admits of its being readily removed and replaced.
For the purpose of securing the burner firmly in place and to facilitate the insertion
of wicks the burner is provided with a tubular extension of considerable length that
fits into a tubular compartment in the oil tank, and the said extension is formed with
lateral openings of sufficient size to admit of the thumb and finger being freely passed
therethrough. In one arrangement the oil tank is made with two perforated covers
between which there is a supplementary or upper chamber to receive oil that rises
from the main reservoir when the contents thereof are expanded by heat.
Dated this 23rd day of June 1886.
W. LLOYD WISE,
Per. F. J. Brougham,
.46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Lamps.
I, THOMAS COOPER JOHN THOMAS, of 54 Minories, in the County of Middlesex,
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 :-
In some lamps a glazed reflecting chamber or chambers is or are combined with a
metal chimney the chamber or chambers being of greater width or diameter at the
outer end or ends than at the point or points of junction with the chimney. Lamps
of this kind are described under various modifications in the specifications of former
patents of mine including No. 688 dated 19th February 1878 No. 2604 dated 26th
June 1880 and No. 6753 dated 24th April 1884.
Now my present invention has reference to certain improvements in lamps of the
kind above referred to.
In order to ensure that the top of the burner cone shall be always at a uniform
distance above the top of the wick tube and to enable the glazed chamber or chambers
and chimney to be readily removed and easily cleaned and replaced I now adopt the
following arrangement.
The burner cone is made separate from the chamber or chambers and chimney
and forms a fixed or attached part of the burner, and the chamber or chambers is

page_text: or are provided with a short tube suitably formed to slide over the burner cone
which is thus made to receive and hold in place the chamber or chambers and
chimney. And in order that the glazed cover or door or doors may be readily
opened for cleaning and to afford access to the interior of the chamber or chambers
and to obviate the risk of mislaying or losing the door that exists when they are as
heretofore has been usual made separate from the chamber or chambers and arranged
to be fastened by a bayonet joint or equivalent I secure each cover or door by a
hinge pin or pivot having its axis parallel to that of the chamber and at right
angles to the plane of the door and provide a stop to arrest and retain the cover or
door in the closed position. With this arrangement the doors can always be readily
opened but there will not be any liability to accidental opening thereof.
In some..
cases I secure the glass in the frame by means of a split ring which arrangement
admits of its being readily removed and replaced.
For the purpose of securing the burner firmly in place and to facilitate the insertion
of wicks the burner is provided with a tubular extension of considerable length that
fits into a tubular compartment in the oil tank and the said extension is formed with
lateral openings of sufficient size to admit of the thumb and finger being freely passed
therethrough. In one arrangement the oil tank is made with two covers between
which there is a supplementary or upper chamber to receive oil that rises from the
main reservoir when the contents thereof are expanded by heat or when the oil tank
stopper is screwed in place.
Referring to the accompanying sheet of drawings.
Figs. 1 and 2 are vertical sections at right angles to each other of a lamp
embodying my improvements. Fig. 3 is an elevation of the burner with burner
cone.
1. is the oil tank; 2 the burner. 3. 3, are reflecting chambers combined with or
united to a chimney 4 as described in former specifications herein before referred to.
5 is the burner cone, which instead of forming part of the combined chimney and
reflecting chambers as heretofore is made separate therefrom and as a part of the
burner 2.
By this construction the burner cone is always maintained at a uniform distance
above the wick tube 6. 7 is a short tube connected to the chambers 3. The said
tube is made to slide over the burner cone, which is constructed of cylindrical form
to receive it and thus hold the chimney and reflecting chambers 3 in place. Ribs or
guides 8 formed in the tube 7 take into grooves 9 in the burner cone and insure
that the combined chimney and reflecting chambers shall occupy their proper positions
when placed on the burner cone. 10, 10, are glazed covers or doors hinged or pivotted
each by a pin 11 to a projecting part of the flanged outer end or mouth of the
corresponding reflecting chamber 3.
In Fig. 2 one of the doors is shown open, the other closed; in Fig. 1 one of the
doors is shown partly open.
It will be understood that the doors are always in the same planes in relation to the
mouths of the chambers. The outer end of each chamber is formed with a recess 12;
each recess acts as a stop against which takes a stud 12" fixed to the door to limit its
downward movement and retain it in the closed attitude.
Each door is retained in its wide open attitude by the part 10* of the projection 13
of the door bearing against a pin 12× fixed in the bracket that carries the corre-
sponding hinge pin 11. The glass of each door is in the example illustrated secured
in place within the flanged grooved door frame by a split ring 14 that takes into the
groove and holds the glass against the flange.
15 is a tubular extension of the burner 2, it fits into a tubular compartment 16 of
the oil tank, and serves to secure the burner firmly in place. 17, 17 are lateral
openings through opposite sides of the tubular extension for admitting the thumb or
finger when inserting a wick in the wick tube. 18, 18, are openings for the passage
of oil from the oil tank 1 to the compartment 16.
The oil tank is provided with two covers 19 and 20. 19* are perforations in the

page_text: •
cover 19. The space between these two covers constitutes a supplementary or upper
chamber 21 to receive oil that rises from the main reservoir when there is from any
cause an overflow.
"
23, 23 are openings by which such oil can pass from the chamber 21 to the
compartment 16. 24 is a pipe that places the compartment 16 in communication with
the atmosphere by way of the hole 25 in the burner. By this means vapour within
the compartment 16 may readily escape. In some cases the chimney has united to or
combined with it one reflecting chamber-only; in others there may be more
than two.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed I declare that what 1 claim is. :-
In a lamp of the kind hereinbefore referred to
1.) The construction and arrangement substantially as described and illustrated
whereby the combined reflecting chamber or chambers and chimney are made capable
of ready removal from and replacement upon the burner cone which serves to hold
them in place as above set forth.
.
2.) The method described and illustrated of mounting the door or doors of the
reflecting chamber or chambers 3.
3:) The combination and arrangement of parts substantially as described and
illustrated whether two or more reflecting chambers or only one be used.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.