Improvements in or relating to Incandescent Gas Burners.
Year: 1897

page_text: Date of Application, 4th Feb., 1897
Complete Specification Left, 25th Oct., 1897-Accepted, 15th Jan., 1898
PROVISIONAL SPECIFICATION.
Improvements in or relating to Incandescent Gas Burners.
We, FRANCIS JAMES PALMER REED, of 5 Alton Terrace, Plymouth, in the
County of Devon, Gentleman, WILLIAM TAYLOR SPEARMAN, of Yelverton, in the
County of Devon, Gentleman, and WILLIAM WRIGHT, of 24 Tavistock Road,
Plymouth, in the County of Devon, Brass Finisher, do hereby declare the nature
of this invention to be as follows: —
This invention relates to incandescent gas burners, its object being to construot
for such burners devices which will protect the mantle from draughts and iuorease
its durability and illuminating power.
According to this invention the burner is provided with a dwarf chimney pre-
ferably tapered at its lower end to encircle closely the body of the burner which
may be provided with a ring upon which the base of the chimney_rests. This
chimney in itself constitutes a draught protector for the mantle. The ring on
which the chimney rests may be formed on the burner in the course of manu-
facture or afterwards fixed thereto, or it may be separately constructed so as to be
capable of being readily placed upon existing burners; for instance it may be
made in halves connected by screws passing through lugs on each of the halves
or it may be mado elastic, or hinged, with a single opening at which the tightening
screw is provided. Where the burner is provided with the usual gallery which is
of considerably greater diameter than that of the burner, a truncated hollow cone
preferably of glass can be provided to encircle the stem of the burner below the
ring aforesaid upon which the chimney rests.
F 3
BOULT & WADE,
Agents for the Applicants.
Improvements in or relating to Incandescent Gas Burners.
We, FRANCIS JAMES PALMER REED, of 5 Alton Terrace, Plymouth, in the
County of Devon, Gentleman, WILLIAM TAYLOR SPEARMAN, of Yelverton, in the
County of Devon, Gentleman, and WILLIAM WRIGHT, of 24 Tavistock Road,
Plymouth, in the County of Devon, Brass Finisher, 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:-
This invention relates to incandescent gas burners, its object being to construct
for such burners, devices which will protect the mantles from draught, and increase
their durability and illuminating power,

page_text: According to this invention the burner is provided with a dwarf chimney, pre-
ferably tapered at its lower end, to encircle the body of the burner, which may be
provided with a ring upon which the base of the chimney rests. This chimney in
itself constitutes a draught protector for the mantle. The ring on which the
chimney rests may be formed on the burner in the course of "manufacture or
afterwards fixed thereto, or it may be separately constructed so as to be capable of
being readily placed upon existing burners; for instance it may be made in
halves, connected by screws, passing through lugs on euch of tho halves, or it may
bo made elastic, or hinged, with a single opening at which the tightening screw is
provided. Where there is an annular passage-way between the burner and the
protector or dwarf chimney a truncated hollow cone can be provided to encirclo
the stem of the burner and obstruct or close the passage-way to protect the mantlo
from strong draughts which might otherwise ascond there!hrough.
In the accompanying drawings,
Figuro 1 represents a view partly in elevation and partly in vertical section of
an incandescent gas lamp provided with one construction of apparatus according to
this invention.
Figure 2 is a similar view of an alternative construction of incandescent gas
lamps.
Figures 3, 4 and 5 show in plan various forms of a supporting ring, for the
chimney.
Like letters indicate like parts throughout the drawings.
A is the ordinary burner of the Bunsen type with its mantle B contained within
the dwarf translucent or transparent chimney C; it is provided with a metal
bing 1), for supporting the chimney which excludes draughts from and otherwise
protects the friable mantle B, within it. E is a tapered supporting tube which can
be placed on the gallery arms E to support the rings D. In Figure 2 the ring D
is made of such size as to encircle a perforated or other cone F, in the manner
shown the latter serving to close the annular passage way between the lower end
of the chimney C and the adjacent part of the burner. The cone F and ring D
are both supported by the arms E' and may be notched to engage them if desired.
The ring D keeps the cone F in place and in proper angular shape preventing it
from opening at the division F. By either of the arrangements shown in Figs. 1
and 2 strong currents of air entering the annular opening A' at the base of the
burner are prevented from impinging on the mantle B.
The cone F can be divided down one side as shown at F¹ in Figure 2 to facilitate
the operation of putting it into place by springing it over the head of the burner.
Where the ring D is not formed on the burner A, various constructions are
adopted to facilitate its attachment thereto. Thus Figure shows it formed in
separable halves held together by screws D' D'. Figure 4 shows an elastic form
thereof, for springing over the burner A to be tightened upon it by a scrow D³.
Figure 5 shows a ring with screw D and a hinge D. The forms shown in
Figures 3, 4, and 6 are all applicable to existing burners.
The cone F aforesaid might be divided like the rings D Figures 3 and 5 if
desired.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what
We claim is: :-
1. In a gas incandescent burner, a translucent or transparent mantle protector
or chimney such as C substantially as described.
2. In a gas incandescent burner the combination of a translucent or transparent
mantle-protector or chimney such as C and a fixed or removable supporting ring
such as D substantially as described and illustrated in the accompanying drawings.
3. In a gas incandescent burner the combination with a mantle protector of a
detachable supporting ring therefor.

page_text: 4. In a gas incandescent burner the combination with a mantle-protector or
chinney such as C of a coned ring such as F in the annular passage way between
the protector and burner substantially as and for the purpose described.
6. A supporting ring for a mantle protector, substantially as and for the purpose
described and illustrated in Figure 3 or Figure 4 or Figure 5 of the accompanying
drawings.
6. The combination and arrangement of parts constituting the complete incan-
descent gas lamp, substantially as described and illustrated in Figure 1 or Figure 2
of the accompanying dṛ wings.
Dated this 16th day of October 1897.
لي
FRANCIS J. P. REED.
WILLIAM TAYLOR SPEARMAN.
W. WRIGHT.
Boult & Wade,
Agents for the Applicants.