Improvements in the Mechanism for Raising Lamp Galleries.
Year: 1895

page_text: Date of Application, 16th Mar., 1895
Complete Specification Left, 16th Dec., 1895-Accepted, 18th Jan., 1896
PROVISIONAL SPECIFICATION.
Improvements in the Mechanism for Raising Lamp Galleries.
I JOHN BARTLETT COPPLESTONE, of 22 Thornford Road, Lewisham, Business
Manager, do hereby declare the nature of this invention to be as follows:
This invention relates to improvements in the mechanism for raising sustaining.
and lowering the galleries of lamps, and consists as follows:-The gallery with its
burden of globe, chimney holder &c. is carried upon one or more suitable legs or
slides after the usual manner.
At the upper part of the body of the burner is the usual set off part, which in
this instance may be enlarged or otherwise modified to suit requirements; its
external appearance being that of a circumferential deep band.
For a given
length around this band is pierced a slot hole about midway in its depth, and at or
near its one end (left hand) is an outstanding thumb piece. Within this set off
part, that is, inside the body is a circular part rotating collar or plate, which is
rotated by means of an exterior finger piece, which passes through the slot and
is screwed or otherwise secured to the said collar.
Again. Within the burner and near its base, are fulcrumed two levers of
somewhat peculiar shape, one upon either side and having a heel part which
impinges upon the bottom of the burner, and thereby limiting its range of motion,
whilst their outer ends are suitably shaped to accommodate slot holes in the
aforesaid part rotating collar. These slot holes are so placed that when the said
collar is at the one extreme of its motion, the points of the two levers only just
emerge therethrough, but by turning the said collar around, the ends of the slots
ride beneath the said levers and raises them simultaneously, until their ends attain
the desired height, when a suitable recess or notch which is shaped in the lever
catches upon or over the edge of the slot hole, and thus prevents its return motion
unless by the will of the operator.
Its action is therefore somewhat thus:-In its normal condition, the gallery
rests upon the body of the burner in the ordinary manner, and the levers lie down
in a low inclined position, but by drawing forward the finger piece along the slot
towards the fixed thumb piece, the levers are lifted whose outer ends are forced
along the underside of the gallery and in so doing the latter is raised to the
required height. When this is attained, the catch part of the levers rest upon the
collar so as to sustain it, or a slight gap or recess may be formed at the end of
the slot into which the neck part of the finger piece may rest. If desired rollers
may be used at the ends of the levers, or more than two of such levers may be
used, or in some cases I may provide rollers upon the rotating collar upon which
shall rest the two levers, so that when the said collar is turned around the rollers
shall ride against the underside of the said levers.
Dated this 15th day of March 1895.
CHARLES T. POWELL,
Applicant's Agent.

page_text: Improvements in the Mechanism for Raising Lamp Galleries.
I JOHN BARTLETT COPPLESTONE, of 22 Thornford Road, Lewisham, Business
Manager, 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 improvements in the mechanism for raising, sustaining
and lowering the galleries of lamps, as hereinafter described, and in order to more
clearly explain the nature of this my invention, I have appended hereunto an
illustrative sheet of drawings, upon which are figures and numbers of reference,
similar numbers referring throughout the views to the same thing or part.
Fig. 1, shows the burner with the gallery down, that is, in its lowered position.
Fig. 2, shows the burner with the gallery in its raised position.
Fig. 3, is a plan view of the burner with the gallery removed.
Fig. 4, is a detail view of one of the levers and a portion of the rotating plate.
The gallery 6, with its burden of globe, chimney holder &c., is carried upon one
or more suitable legs or slides 7, after the usual manner.
At the upper part of the body 8, of the burner is the usual set off part, which
in this instance may be enlarged or otherwise modified to suit requirements; its
external appearance being that of a circumferential deep band 9.
For a given
length around this band is pierced a slot hole 10, about midway in its depth, and at
or near its one end (left hand) is an outstanding thumb piece 11. Within this set
off part, that is, inside the body is a circular part rotating collar or plate 12, which
is rotated by means of an exterior finger piece 13, which passes through the slot 1",
and is screwed or otherwise secured to the said collar 12.
Again. Within the burner and near its base at 14, are fulcrumed two
levers 15, 15, of a somewhat peculiar shape, one upon either side and having a
heel part 16, which impinges upon the bottom of the burner, and thereby limiting
its
range of motion, whilst their other ends are suitably shaped to accommodate
slot holes 17, in the aforesaid part rotating collar 12. These slot holes 17, are so
placed that when the said collar is at the one extreme of its motion, the points of
the two levers only just emerge therethrough, as seen in Figs. 1 and 3, but by
turning the said collar 12 around, the ends 18, of the slots ride beneath the said
levers and raises them simultaneously, until their ends attain the desired height,
when a suitable recess or notch 19, which is shaped in the lever, catches upon or
over the edge of the slot hole as seen in Fig. 4, and thus prevents its return motion
unless by the will of the operator.
This retention of the levers in their raised position I find in practice, scarcely
needs special provision, but another way in which it may be done is by making them
without the notch 19, but by making a slight gap or recess 20, at the end of the
slots 10, as seen in Fig. 1, into which the neck part 21, of the finger piece
may rest.
Its action is therefore somewhat thus :--In its normal condition, as seen in Fig. 1,
the gallery rests upon the body of the burner in the ordinary manner, and the
levers lie down in a low inclined position, but by drawing forward the finger
piece 13, along the slot towards the fixed thumb piece, in the direction of arrow 22,
the levers are lifted, their outer ends 23, being forced along the underside of the
gallery, and in so doing the latter is raised to the required height, as seen in Fig. 2.
When this is attained, the catch part 19, of the levers rest upon the collar or
plate 12, so as to sustain it. If desired rollers or studs may be used at the ends of
the levers, or more than two of such levers may be used, or in some cases I may
provide rollers or studs upon the rotating collar upon which shall rest the two

page_text: levers, so that when the said collar is turned around the rollers or studs shall ride.
against the underside of the said levers.
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 :-
1. In mechanism for raising and lowering the galleries of lamps, the combination.
with the movable gallery 6, and burner 8, having the pivoted levers 15, and the
part rotating plate 12, having the slots 17, constructed and acting substantially as
set forth and shown.
2. The general combination and arrangement of the parts constituting this my
improved mechanism for raising and lowering the galleries of lamps, substantially
as herein described and shown upon the drawings.
Dated this 14th day of December 1895.
CHARLES T. POWELL,
12 Cherry Street, Birmingham, Applicant's Agent.
CHARLES T. POWELL,
12 Cherry Street, Birmingham, Applicant's Agent.