AN IMPROVEMENT OR IMPROVE- MENTS IN LAMPS
Year: 1883

page_text: LETTERS PATENT to Francis Robert Baker of Birmingham in the County
of Warwick Engineer for an Invention of AN IMPROVEMENT OR IMPROVE-
MENTS IN LAMPS
PROVISIONAL SPECIFICATION left by the said Francis Robert Baker at
the Office of the Cominissioners of Patents on the 8th September 1883.
FRANCIS ROBERT BAKER of Birmingham in the County of Warwick Engineer,
"AN IMPROVEMENT OR IMPROVEMENTS IN LAMPS."
My invention has reference to the burner and gallery part of Lamps principally
for burning volatile oils; but my said invention is applicable to lamps generally.
The object of my invention being to facilitate or expedite, the lighting of the
lamp, the trimming of the wick or wicks, and the refilling of the reservoir with oil,
to be burned.
My Invention consists in the construction and arrangement of the parts of the
burner, and gallery of such lamps, in order that the gallery globe, chimney and
burner-dome, may be removed from off, or from above the wicks; for the purpose
of exposing the open top of the said Lamp; whereby, the trimming of the wick or
wicks, the lighting of the lamp, the refilling of the reservoir with oil, can be readily
effected, without disturbing the globe, chimney or other parts or fittings connected
with, or resting upon the gallery of the said lamp.
I will describe my invention as applied to a lamp for burning petroleum or other
volatile oils.
Attached to the body of the burner below the junction formed between the
gallery and the body of the burner, hanging fixed brackets are attached on opposite
sides thereof. The said brackets being situated at a suitable distance on one side
of the centre, or axial line of the lamp. And attached to each bracket, a pair of
parallel arms are jointed. The other, or upper ends of which said arms being also
jointed to the moveable gallery, at the same distance as before, on the other side of
the middle of the burner body-So that when the parts are in their normal state,
the parallel arms lie diagonally across the centre of the burner body; while the
positions of gallery, burner and parts carried by them, lie over the wicks and
reservoir of the Lamp.

page_text: When it is required to gain access to the burner, and other parts for the purpose
of trimming the wicks, lighting the Lamp or refilling the reservoir with oil. Access
is gained to the said parts by raising the gallery on the jointed parallel rods. The
double joints on the fixed brackets constituting centres upon which the gallery
describes an arc of a circle, on uncovering the wicks; while the gallery at the same
time always preserves a perfectly horizontal state in all its changing positions in
uncovering and recovering the burner.
Therefore the resultant of the simultaneous action of the combined movement of
the double jointed rods, on the lifting up and passing away of the gallery from off
the body of the burner, so as to fully expose the parts for the purposes described;
is to preserve perfect parallelism of the gallery in all its positions.
On the turning of the gallery from its closed to its open position, the parallel
levers are of such a radius, that the gallery bottom just escapes the ends of the
wicks; and when fully thrown back, the body of the burner is completely
uncovered and fully exposed without interferring or detaching the globe, chimney
or any other parts attached to or resting on the Lamp gallery
To close the burner, the gallery is turned forward upon its jointed levers, until
the gallery bottom rests upon the top edge of the burner body described

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Francis Robert Baker in the Patent Office on the 6th March
1884.
FRANCIS ROBERT BAKER of 12, 13. 14 Buckingham Street Birmingham
5 Warwickshire IMPROVEMENTS IN LAMPS"
My Invention has reference to the Burner and Gallery part of Lamps principally
for burning volatile oils; and my said Invention is applicable to Lamps generally.
The object of my invention is to facilitate or expedite the lighting of the Lamp,
the trimming of the wick or wicks and the refilling of the reservoir with oil to be
burned My Invention consists in the construction and arrangement of the parts
of the burner and gallery of such Lamps, in order that the gallery, globe, chimney
and burner dome, may be removed from off or from above, the wicks for the
purpose of exposing the open top of the said Lamps whereby the trimming of the
wick or wicks, lighting of the Lamp, and the re-filling of the reservoir with oil, can
be readily effected, without disturbing the globe chimney, or other parts or fittings,
connected with, or resting upon, the gallery of the lamp. I will describe my
Invention as applied to a Lamp for burning petroleum or other volatile Oils
Attached to the body of the burner, below the junction formed between the
gallery and the body of the burner, hanging fixed brackets are attached on opposite
sides thereof. The said brackets being situated at a suitable distance on one side
of the centre or axial line of the Lamp; and attached to each bracket a pair of
parallel arms are jointed. The other or upper ends of such arms being also jointed
to the moveable gallery, at the same distance as before, on the other side of the
middle of the burner body; so that when the parts are in their normal state the
parallel arms lie diagonally across the centre of the burner body while the positions
of the gallery burner and parts carried by them, lie over the wicks and reservoir of
the Lamp.
When it is required to gain access to the burner and other parts for the purpose
of trimming the wicks, lighting the lamp, or refilling the reservoir with oil, access
is gained to the said parts by raising the gallery on the parallel jointed rods, the
double joints on the fixed brackets constituting centres upon which the gallery
describes an arc of a circle, on uncovering the wicks, while the gallery at the same
time always preserves a perfectly horizontal state in all its changing positions in
uncovering and recovering the burner. Therefore the resultant of the simultaneous
action of the combined movement of the double jointed rods, on the lifting up and
passing away of the gallery from off the body of the burner so as to fully expose
the parts for the purpose described is to preserve perfect parallelism of the gallery
in all its positions
On the turning of the gallery from its closed to its open position, the parallel
levers are of such a radius that the gallery bottom just escapes the ends of the
wicks; and, when fully thrown back the body of the burner is completely
uncovered and fully exposed, without interfering with or detaching the globe and
chimney or any other parts attached to or resting on the Lamp gallery
To close the burner, the gallery is turned forward upon its jointed levers until
the gallery bottom rests upon the top edge of the burner body as before described
In order to still further facilitate the exposure of the whole interior of the
burner as described above, I prefer to have the two parallel arms, which at
their one end are nearest to the centre of the burner coupled or jointed together at
their further extremity by a rod, which running from one to the other, connects both
and itself projects beyond the arm on one side On this projecting end I fix a

page_text: handle of metal or other material. The handle thus fixed acts by means of the
connecting rod upon each corresponding parallel bar; the corresponding result is
that the whole of the cone holder bearing the moon or chimney can with one
hand be easily lifted, and preserving its horizontal position, be removed to one side
of the burner.
It is obvious that instead of having the above mentioned arrangements with the
hanging fixed brackets and parallel arms on the exterior of the burner and exposed
to view, I can if desired fix all in the interior of the burner in which case when
the cone and glass holder are in their normal position the whole will be hidden
from view, and nothing but the projecting end of the connecting rod with handle
attached be visible; in which case the cone and glass holder would not be
completely removed from off the burner but would be raised to a point just beyond
the centre of the arc of a circle, at which point they would remain naturally fixed
at a sufficient height above the top of the wick case to allow of the wicks being
easily trimmed or lighted the burner itself cleaned out, and the container refilled
with oil. In this case the stop required would be formed by the interior side of
the body of the burner against which the parallel arms when raised would rest.
Should it however be preferred to furnish the burner with the above arrangement
on the exterior thereof, it is obvious that a stop may be fitted which will prevent
the cone and glass holder from being carried back further than a given point
And in order that my invention may be more fully understood reference is
hereby made to the accompanying drawings in which similar letters of reference
indicate corresponding, parts and which drawings represent a Duplex Burner with
my invention applied thereto and which is fixed to the interior of the same.
Fig. 1. is a side view of the burner with the gallery in its normal position and
Fig. 2 is also a side view, nearly at right angles to Fig. 1. shewing the gallery
raised. a is the handle attached to the bar or axle b. The bar b carries the two
arms c. c, which are firmly fixed to b so as to simultaneously move therewith. The
arms d. d. are parallel to c. c and therefore the outer ends of these arins preserve
their parallelisin in every position and being attached to the gallery as shewn, the
gallery must also remain parallel, whether raised or lowered to its normal
position
Having now particularly described and ascertained the nature of my snid
Invention and in what manner the same is to be performed I declare that what
I claim is:
The method of, and means and appliances for, raising the cone and glass holder
of lamps and maintaining the same in a horizontal position, when so raised, for the
purposes and in manner substantially as hereinbefore described and shewn on the
drawings
In witness whereof I the said Francis Robert Baker have hereunto set my
hand and seal this 3rd day of March in the year of our Lord One thousand eight
hundred and eighty four.
Witness to signature
JOHN WILLIAM BERNARD WRIGHT
FRANCIS ROBERT BAKER (L.S.)