Improvements in the Raising of the Galleries of Hydrocarbon and other Oil Lamps.
Year: 1889

page_text: The decision of the Comptroller-General, of the 7th day of March 1893, allowed,
under Section 18 of the Patents, &c. Act, 1883, an Amendment of this
Specification.
Date of Application, 17th July, 1889
Complete Specification Left, 6th Aug., 1889-Accepted, 5th Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in the Raising of the Galleries of Hydrocarbon and
other Oil Lamps.
I ALFRED HENRY GRIFFITHS of the firm of Evered and Company, Limited, of
the Surrey Works, Smethwick, in the county of Stafford, Lamp Manufacturers, do
hereby declare the nature of this invention to be as follows:-
This invention relates to the mechanism for the raising of the galleries &c., of the
said lamps, whereby free access is afforded to the wicks, for trimming and lighting &c.,
and consists in providing that the said gallery &c., is carried upon a rectangular
central slide, and raised and lowered by means of a compound acting lever of
peculiar construction, which raises the said gallery &c., also prevents its descent
except at will, and further provides that the said gallery may or may not be entirely
removed at the will of the operator.
The general construction and arrangement of the burner, gallery, dome &c., is
that of ordinary make, also the extinguishing mechanism is similar to that now in
use, except so far as it may be modified to suit this my invention
The dome or upper case of the burner is permanently attached to the moveable
gallery, and carried therewith upon the aforesaid slide, and separate from the lower
part of the burner. This slide consists of a rectangular stem or pillar, suitably
connected at its upper end to the underside of the said gallery, and extending
downwards for a sufficient length to suit the guide in the lower part of the burner.
Upon this sliding pillar, and at a point to suit the aforesaid lever, a projecting stud is
provided.
Again. In the centre of the lower part of the burner, and between the wick tubes,
a rectangular guide is made to receive the aforesaid sliding pillar.
From the exterior of the burner a spindle is carried towards this said guide,
having upon its outer end, a suitable manipulating handle, and at its inner end the
aforesaid lever. This lever is somewhat of a peculiar fork form, the end of one of its
prongs being of a hook form, and the other prong terminating with a recess or notch.
When in working position, the stud upon the sliding pillar, rides upon the upper
surface of the lowest prong of the lever, so that upon turning round the handle,
the lever raises the stud, the latter sliding along the former until it arrives at the
end of the said lever, when by that time the said lever has assumed an elevated
position, and the stud drops into the notch or recess at its end.
The stud thus falling into this notch, by the weight of the gallery &c., or
downward force upon the pillar, prevents the backward motion of the lever, and
thus preserves the raised position of the gallery &c.
Although the lever is locked from downward pressure through the pillar, yet the
lever itself may be moved backward, by the handle, and the gallery &c. allowed
to fall.
When in its raised position as before described, the upper prong of the lever, is
moved round from over the aforesaid peg, thus permitting the free removal of the
gallery slide &c., from the lower part of the burner. When however the gallery &c.

page_text: is in its lowered position, the gallery cannot be thus removed, without first turning
the said lever, by reason of the upper hook shaped prong of the lever overhanging
the stud. In an attempt to do so, the stud catches within the said hook part and
thereby limits the height to which it can be raised, and so prevents its removal.
Dated this 16th day of July 1889.
CHARLES T. POWELL,
Applicant's Agent.
COMPLETE SPECIFICATION (AMENDED).
Improvements in the Raising of the Galleries of Hydrocarbon and
other Oil Lamps.
I ALFRED HENRY GRIFFITHS, of the firm of Evered and Company, Limited, of
the Surrey Works, Smethwick, in the county of Stafford, Lamp Manufacturers, 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 mechanism for the raising of the galleries &c. of hydro-
carbon and other oil lamps, whereby free access is afforded to the wicks, for trimming
and lighting &c., and consists in providing that the said gallery &c. is carried-upon-
rectangular-central slide, and raised and lowered by means of a compound acting
lever of peculiar construction, which raises the said gallery &c., also prevents its
descent except at will, and further provides that the said gallery may or may not be
entirely removed at the will of the operator.
I attain these objects by the mechanism, and after the manner illustrated in the
accompanying drawings, in which:
Fig. 1, is a sectional view in elevation of a burner embracing this my invention.
Fig. 2, is a plan view of this my invention with the gallery removed.
Fig. 3. is a sectional view in elevation of my invention, shewing the gallery &c.
raised by the lever.
Fig. 4, is a sectional view in elevation shewing the preventional device, against the
unintentional removal of the gallery &c.
The general construction and arrangement of the burner a, gallery b, dome c, &c.,
is that of ordinary make, also the extinguishing mechanism is similar to that now in
use, except so far as it may be modified to suit this my invention.
The dome c, or upper case of the burner is permanently attached to the moveable
gallery, and carried therewith upon the aforesaid slide d, and separate from the lower
part of the burner. This slide consists of a rectangular pillar d, suitably connected
at its upper end to the underside of the said gallery b, and extending downwards for
a sufficient length to suit the guide e, in the lower part of the burner. Upon this
sliding pillar d, and at a point to suit the lever, a projecting stud 9 is provided.
The rectangular guide e, is made in the centre of the lower part of the burner, and
between the two wick tubes h, h, to receive the aforesaid sliding pillar d.
From the exterior of the burner a spindle i, is carried towards this said guide,
having upon its outer end a suitable manipulating handle j, and at its inner end the
aforesaid lever. This lever is somewhat of a peculiar fork form, the end of its one
prong k, being of a hook form, and the other prong terminating with a recess or
notch 1.
When in working position, the stud 9, upon the sliding pillar d, rides upon the
upper surface m, of the lowest prong of the lever, so that upon turning round the
handle, the lever, raises the stud g, the latter sliding along the former until it arrives
at the end of the said lever, when by that time the said lever has assumed an elevated
position, as shown in Fig. 3, and the stud g, drops into the notch or recess 1, at
its end.
When the study, thus falls into this notch 1, the weight of the gallery &c. presses
the side of the study, hard against the innerside n, of the notch 1, and by reason of

page_text: 9,
the notch 1, being only capable of a circular motion about the centre 0; and the stud
of a vertical motion only, the two become locked and self supporting, and preserves
the raised position of the gallery &c.
Although the lever is locked from downward motion by the stud g, upon the
pillar d, yet the lever itself may be moved backward free of the stud, by the handle j,
and the gallery &c. allowed to fall.
When in its raised position as before described, the upper prong k. of the lever, is
moved round from over the aforesaid stud g, thus permitting the free removal of the
gallery, slide, &c., from the lower part of the burner. When however the gallery &c.
is in its lowered position, as seen in Fig. 1, the gallery, &c. cannot be thus removed,
without first turning the said lever i, by reason of the upper hook shaped prong k,
of the lever overhanging the study. In an attempt to do so, the study, catches
within the said hook k, and thereby limits the height to which it can he raised, and so
prevents its removal, as seen in Fig. 4.
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 enrrying or supporting of the gallery, chimney holder &c, of oil-lumps,
upon a centrul rectangular pillar, sliding in a central guide in the lower part of
the burner, substantially as described and illustrated, and for the purposes specified.
2nd 1st. The raising, lowering or retaining of the sliding gallery, chimney holder,
&c., of oil lamps, by means of a lever, constructed and operating, substantially as
described and illustrated, and for the purposes specified.
3rd 2nd. The combination with the raising lever of oil lamp galleries &c., of the
notch or recess l, substantially as described and shown, and for the purposes specified.
Dated this 3rd day of August 1889.
CHARLES T. POWELL,
12, Cherry Street, Birmingham, Applicant's Agent.