Improvements in the Raising of the Galleries and other Parts of Hydro-carbon and other Oil Lamps.
Year: 1887

page_text: Date of Application, 29th Nov., 1887
Complete Left, 21st Feb., 1888
Complete Accepted, 6th Apr., 1888
Improvements in the Raising of the Galleries and other Parts of
Hydro-carbon and other Oil Lamps.
I FRANCIS ROBERT BAKER of Snow Hill, Birmingham in the county of Warwick
Engineer, do hereby declare the nature of this invention to be as follows:
This invention relates to the raising of the galleries and burners &c. of hydro-
carbon and other oil lamps, and has for its object, the carrying of such moving parts
upon one guide or slide such slide or guide being made capable of preserving the
correct position in line, of the parts when in sliding, and also the mechanism by which
such slide is actuated, or raised and lowered.
Hitherto the galleries, burners &c. of these lamps have been raised by means of
various contrivances, but such moving parts have been carried upon two or more
slides, or in some cases, two joints; this however limits very much the amount of
space of access to the wick for trimming &c. In my case however I dispense with
the two or more guides &c., and so arrange it, that one guide only is necessary, thus
giving a clear space of access to the wick &c. almost the whole way round, while at
the same time it is simpler.
In some cases these parts are hitherto raised direct by hand, while in others they
are raised by means of a lever or levers acting upon such parts, but in my present
case however, I dispense with levers and use a crank pin action, whereby to raise and
lower the aforesaid moving parts.
This my invention may be described somewhat thus:-
The dome or case of the burner is permanently attached to the sliding gallery and
chimney holder, but separate from the cone, the wick tubes & lower part of the lamp.
Upon the one side of the wick tubes I form a rectangular guide to receive a rectangular
slide. This guide is made as long as convenient, passing down through the cone and
the screw part which connects the burner to the body of the lamp. Preferably this
slide would consist of a broad flat piece of metal, and would be connected at its upper
end to the dome or burner case, by rivetting or otherwise, and thence passes down
through the guide already spoken of; its rectangular or other irregular shape,
preventing any horizontal motion, so as to keep the parts always in position.

page_text: Again. In order to raise or lower these parts, I form in the slide an horizontal
(or approximately) slot, and provide in connection therewith, a spindle, passing from
the outside of the body of the burner towards such slot; and upon the end of the
spindle I mount a crank plate or wheel and pin, this crank pin engaging with the
horizontal slot beforementioned. This spindle is suitably carried in a tubular or other
bearing formed upon the body of the burner, and is further provided at its outer end
with a thumb and finger turn or knob &c.
It will thus be readily seen that when the spindle is rotated the crank pin necessarily
causes the slide to rise or fall; it being so arranged that when the crank pin is at the
bottom, the moving parts are in their normal position, but when at the top (having
travelled half a revolution) the moving parts have been raised to their elevated
position.
Again. In order that the gallery &c. may be lifted out entirely, I may provide an
open slot extending from the horizontal slot downwards to the outside of the slide,
so that the slide may be drawn clear off the crank pin.
CHARLES T. POWELL,
4, Cherry Street, Birmingham,
Applicant's Agent.

page_text: Hydro-carbon and other Oil Lamps.
I FRANCIS ROBERT BAKER of Snow Hill, Birmingham, in the county of Warwick,
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 :-
This invention relates to the raising of the galleries &c. of hydro-carbon and other
oil lamps, and has for its object the carrying of such moving parts upon one guide or
slide, such guide or slide being made capable of preserving the correct position in line,
of the parts when sliding, and also the mechanism by which such slide is actuated, or
raised and lowered.
Hitherto the galleries &c. of these lamps have been raised by means of various
contrivances, but such moving parts have been carried upon two or more slides, or in
some cases upon two joints; this however limits very much the amount of space for
access to the wicks for trimming, or lighting &c.
In my case however I dispense with the two or more guides, and so arrange it that
one guide only is necessary, thus affording access to the wick or wicks nearly the whole
way round, and also the raising mechanism is novel and simple in its arrangement
and action.
Hitherto the raising of these sliding parts is effected in some cases direct by hand;
by inclined surfaces, or by a lever or levers, &c., acting upon such parts, but in this
my invention I use a crank pin action, which acts direct upon the one slide itself.
This my invention may be described somewhat thus :-
The dome or upper case of the burner is permanently attached to the sliding gallery
and chimney holder, but separate from the cone or cap, the wick tubes, and lower
part of the lamp.
Upon the one side of the wick tubes I form a rectangular guide to receive a
rectangular slide. This guide is made as long as convenient, passing down the cone
or cap and that part which fits into the body or reservoir of the lamp. Preferably
this slide would consist of a broad flat piece of metal, but may be of other sectional
form (except circular) which will not permit rotation, and would be connected at its
upper end to the dome or burner case, by rivetting or otherwise, and thence pass
down through the guide already spoken of, its rectangular or other irregular shape,
preventing any horizontal motion and thereby keeping the parts always in a vertical
position.
Again, I further form in the slide an horizontal slot, and provide in connection
therewith a spindle, passing from the outside of the body of the burner towards such

page_text: slot; and upon the end of the spindle I mount a crank plate or wheel and pin; this
crank pin engaging with the beforementioned horizontal slot. This spindle is further
suitably carried in a tubular bearing formed upon the body of the burner, and is also
provided at its outer end with a thumb and finger turn or knob.
It will thus be readily seen that when the spindle is rotated, the crank pin necessarily
causes the slide to rise or fall, it being so arranged that when the crank pin is at the
bottom, the moving parts are in their normal position; but when at the top, having
travelled a little more than half a revolution, the moving parts have been raised to
their elevated position.
Again, In order that the gallery &c. may be lifted out entirely, I provide an open
slot, extending from the horizontal slot downwards to the outside of the slide, so that
the said slide &c. may be drawn clear off the crank pin.
I will now proceed to describe more fully my invention, having reference to the
accompanying illustrative sheets of drawings, upon which are figures and letters of
reference, like letters throughout the several views referring to the same thing or
part.
Fig. 1 is a sectional elevation representing my invention as applied to a lamp when
the gallery &c. is in its normal position.
Fig. 2, is a front view of Fig. 1.
Fig. 3, is an inverted plan, shewing position of slide guide.
Fig. 4, represents the globe holder &c. raised from the burner.
Fig. 5, is a sectional plan of Fig. 4, upon line A-B.
Fig. 6 shows in detail the one slide which carries the globe holder or gallery. &c.
a, is the body of the burner, b, the gallery, c the chimney holder, (globe and
chimney not shewn,) d, d¹ are the wick tubes, e the portion which passes into the
.container or reservoir of the lamp, such part being fastened to the said container by
any of the ordinary methods in use.
These views illustrate only such parts of the lamp, that are operated upon, or affected
by my invention.
In the lower part of the burner I provide a guide f, and extend it some distance
below the burner, in order to give it stability, and also to facilitate smoothness of
sliding see Figs. 1, 2 & 4.
The dome g, chimney holder c, and gallery b, are made separate from the body a.
To the underside of the gallery and dome 1 attach a slide h, which corresponds to the
rectangular sectional form of the guide f. By making this guide and slide of a
rectangular, or other non-circular form, it keeps the gallery &c. always in its correct
vertical position, during its ascent or descent.
At the upper end of the slide 1, I provide a slot i, see detail Fig. 6, to receive the
crank pinj. This crank pin j is mounted upon a crank plate or wheel k and spindle 1,
which is operated by a thumb and finger turn m. It will now be seen that by turning
the crank pin around to the extent of about half a revolution, the gallery &c., will be
raised clear of the wick tubes as seen in Fig. 4.
For the purposes of cleaning &c., I may entirely remove the gallery &c., from the
body of the burner by means of the vertical slot n, through which the crank pinj may
pass, when the slide &c. is being withdrawn.
Upon the spindle l, I provide a peg o, which travels around in a slot p, formed in
the tubular bearing, and which arrests the motion of the crank pin, when the latter
reaches the bottom of its stroke, and also when it has reached the open
top of its stroke.
slot at the
Thus it will be seen that by this my improved arrangement, by reason of there being
but one slide, and the crank pin acting upon that slide direct, the gallery &c. is easily
raised, there being no tendency in the slide to kick or bind itself in its guide when
being raised, while also there is a clear access to the top of the wicks for more than
three fourths of the way round.
I am aware as already intimated that levers have been used for raising the
galleries &c. of lamps for lighting &c., as for instance, in letters patent granted to me,

page_text: dated September 8th 1883, No. 4316, I use an arrangement of levers, and therefore
I do not claim broadly the use of any device which may be of the nature of a
lever, but,
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:
1st. The carrying or supporting of the gallery, chimney holder &c., upon one
slide and guide, substantially as described and illustrated, and for the purposes set
forth.
2nd. The combination of the crank plate, and crank pin, with the one slide having
an horizontal and open slot, the said parts being arranged and acting substantially as
described and illustrated, and for the purposes set forth.