Improvements in Raising Lamp Galleries.
Year: 1893

page_text: Date of Application, 5th Sept., 1893
Complete Specification Left, 18th May, 1894-Accepted, 23rd June, 1894
PROVISIONAL SPECIFICATION.
Improvements in Raising Lamp Galleries.
JOHN BARTLETT COPPLESTONE 3 Stretton Road Croydon Commercial
Traveller, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved & more direct form of lifting by means of
levers the galleries of oil lamps, also for supporting & lowering the same and is
constructed as follows-
The gallery is carried upon two rods or standards, either round or rectangular in
shape, having a projecting stud in cach at a short distance below the gallery.
Guides or tubes are fixed in the burner, into which the rods or standards fit
closely, so that upon the raising or lowering of the gallery, oscillation is prevented,
and a steady & direct vertical action secured.
The
The form of lever employed is that of a cross-bar, terminating at one end
externally in a thumb-plate and turning upon a fulcrum on the burner, having
two arms fitted so as to come close to the guides or tubes and when in working
position will be under the projecting studs of the gallery rods or standards.
turning of the thumb-plate will then lift the gallery to its required height, the lever
being provided with a stop to act at the point when the arms have travelled
sufficiently far under the studs to turn the corners. The weight of the gallery
then presses towards the fulcrum of the lever, preventing the arms from falling,
which although only in an inclined position, supports the gallery and can only be
lowered by turning back the thumb-plate of the lever.
Dated this 4th day of September 1893.
J. B. COPPLESTONE.
Improvements in Raising Lamp Galleries.
I JOHN BARTLETT COPPLESTONE, late of 3 Stretton Road, Croydon, now
residing at Mausard Terrace, Dartmouth, in the County of Devon, 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 an improved and more direct form of lifting by means
of a lever, the galleries of oil lamps, also for supporting and lowering the same,
and is constructed as follows:-
;-
The gallery is carried upon two rods or standards, either round or rectangular in
shape, having a projecting stud in each at a short distance below the gallery.
Guides or tubes are fitted in the burner into which the rods or standards fit closely,
so that upon the raising or lowering of the gallery, oscillation is prevented, and a
steady and direct vertical action secured.
The form of lever employed, is that of a cross-bar terminating in a thumb plate
externally and turning upon a fulcrum on the burner, having two arms fitted so as
to come close to the guides or tubes, and when in position will be under the
projecting studs of the gallery rods or standards. The turning of the thumb
plate will then lift the gallery to its required height, the lever being provided with
a stop to act at the point when the arms have travelled sufficiently far under the
studs to turn the corners. The weight of the gallery then presses towards the
[Price 8d.]

page_text: fulcrum of the lever preventing the arms from falling, which although only in an
inclined position supports the gallery and can only be lowered by turning back the
thumb plate of the lever.
The accompanying drawing illustrates this my invention in several views in
which ;
Fig. 1, is a side view of my invention as applied to a round wick lamp burner,
and shewing the gallery &c. in its raised position.
Fig. 2, is a front view of the invention in a similar raised position.
Fig. 3, is a sectional plan view of the invention as seen at dotted line A-B
(Fig. 1).
Fig. 4, is a detailed view showing arrangement of stop for lever.
5, is the body of the burner; 6, is the gallery; 7, is the wick tube; 8, 8, are
the gallery supporting rods; 9, 9, are the projecting studs in the said rods.
10, 10, are the guides for the rods 8, 8. 11, is the cross bar carried in fulcrum
joints at 12, 12, and having the two lever arms 13, 13, which lie beneath the
studs 9, 9. 14, is the thumb plate or handle by which the lever is manipulated.
15, is the stop to determine the amount of turn to be given to the lever.
Its operation is thus :-In its lowered position the arms 13, 13, lie beneath the
studs 9, 9. By turning around the lever by means of the thumb plate 14, the
arms lift the gallery 6 &c., by means of the studs 9, 9, until it has reached
the position shown in Figs. 1 & 2, that is, the studs 9, 9, have just passed over
the corner 16 of the arm, and rest upon the ends of the said arms. At this point
of travel the stops 15, come against the burner at 17 and arrest its progress; thus
the studs 9, 9, rest upon the ends 18, of the arms and the weight of the gallery &c.
has a tendency to push itself off such surface, or to force the arms against their
bearings 12, 12. The said studs therefore in their downward force (by reason of
the weight of the gallery &c.) cause the rods 8, 8, to be jammed against the sides
at 10 of the guides 10, and so the gallery &c. is supported. By means of the
handle 14, the arms 13, 13, may be turned around from beneath the studs 9, 9, and
the gallery lowered at will.
Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that what I
claim is:-
In mechanism for the raising and supporting of lamp galleries, the combination
with the burner 5, having guides 10, 10, and the gallery 6, with the rods 8, 8,
having the studs 9, 9, of the bar 11, thumb plate 14, and two arms 13, 13 having
the end surfaces 18, 18, and the stop parts 15, all substantially as described and
shown and for the purposes specified.
Dated this 17th day of May 1894.
JOHN BARTLETT COPPLESTONE,
Applicant.