IMPROVEMENTS IN THE RAISING AND LOWERING OF LAMP GALLERIES
Year: 1885

page_text: I, GEORGE REYNOLDS LEWIS of Park Lane Aston near Birmingham in the
County of Warwick Tool Maker, do hereby declare the nature of said invention
for "IMPROVEMENTS IN THE RAISING AND LOWERING OF LAMP GALLERIES," to be
as follows:-
My invention has reference principally to the raising and lowering of the galleries
of lamps, for burning light or other volatile hydro-carbon oils; and my said inven-
tion has for its object to facilitate the trimming of the wicks, and the lighting of
the lamps, or if necessary, the refilling of the oil reservoir. By constructing and
arranging the parts of the burner as hereinafter described, the gallery carrying the
globe, chimney and top part of the lamp burner can be raised for exposing the
wicks to be trimmed, and for the lighting of the lamp, without the necessity of
removing the globe, chimney and other parts carried by the gallery.
According to my invention, the gallery is provided with two or more depending
rods which slide vertically through holes or guides in the lower part of the burner.
One of these rods is wormed with a quick threaded screw, which passes through a
screw box formed in the middle of a bevil pinion. This bevil pinion is suspended
and supported by a bracket placed within the lower part of the burner of the lamp,
and with this said pinion a bevil wheel gears, which latter is upon the end of an
axis or rod which passes across and protrudes through one side of the burner. This
axis is also terminated outwardly by a milled head or turn, for the rotation of the
said axis and the bevil wheel at its inner end. This axis is also suspended and
works within hanging bracket supports.
To raise the gallery for the trimming of the wicks or the lighting of the lamp,
rotate the milled boss or turn in the proper direction, when the mitre bevil wheel
on the inner end of its axis, rotates the bevil pinion and so raises vertically the
sliding gallery and depending rods carried by it; that is, the threads of the
internally screwed middle or screw box of the bevil pinion acting upon the quick
threaded worm of the screwed guide rod (which is incapable of rotation) raises the
said rod and gallery and other guide rod or rods, thereby allowing the wicks to be
exposed for trimming or lighting purposes.
To lower the gallery, turn the milled head in the opposite direction, when the
wormed guide rod is lowered within the screw box of the bevil pinion. One great
advantage in raising and lowering lamp galleries as described, is that the gallery

page_text: (and parts carried by it) is retained in any position to which it may have been
placed; that is, the screw and bevil wheel arrangement permits the gallery to be
raised, supported and fixed in any position, and further, when the gallery is lowered,
or the burner closed, the parts cannot be accidentally displaced or moved other than
by the raising and lowering axis.
Instead of the bevil pinion being loose, it may be fixed upon the screwed guide
rod, and the screwed guide rod itself capable of rotating or turning within a rising
and falling screw box attached to the frame of the burner and moving with the
burner,
The bevil pinion may be substituted for a tangent wheel, and the bevil wheel by
a screw wheel which simply comes to the same mechanical arrangement as two
wheels. In both cases the object being to rotate a wheel having a screw box in its
centre wherein the screwed guide rod takes.
The gallery and burner of lamps provided with the improvements hereinbefore
described, can be readily removed from the fixed part of the lamp for repair,
cleaning, renewing the wicks, or for other purposes.
A collar may be placed on the lower end of the plain or wormed guide rod to
prevent the parts from moving too high or in preventing the guide rods from being
withdrawn from their guides or sockets.

page_text: Improvements in the Raising and Lowering of Lamp Galleries.
I, GEORGE REYNOLDS LEWIS of Park Lane Aston, near Birmingham in the
County of Warwick, Tool Maker, do hereby declare the nature of said invention
for "IMPROVEMENTS IN THE RAISING AND LOWERING OF LAMP GALLERIES," and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
My invention has reference principally to the raising and lowering of the galleries
of lamps, for burning light or other volatile hydro-carbon oils; and my said inven-
tion has for its object to facilitate the trimming of the wicks, and the lighting of
the lamps, or if necessary, the refilling of the oil reservoir.
By constructing and arranging the parts of the burner as hereinafter described,
the gallery carrying the globe, chimney and top part of the lamp burner can be
raised for exposing the wicks to be trimmed, and for the lighting of the lamp,
without the necessity of removing the globe, chimney and other parts carried by
the gallery.
According to my invention, the gallery is provided with one, two or more
depending rods which slide vertically through holes or guides in the lower part of
the burner. One of these rods is wormed with a quick threaded screw which
passes through a screw box formed in the middle of a bevil pinion. This bevil
pinion is suspended and supported by a bracket placed within the lower part of the
burner of the lamp, and with this said pinion a bevil wheel gears, which latter is
upon the end of an axis or rod which passes across and protrudes through one side
of the burner body. This axis is also terminated outwardly by a milled head or
turn, for the rotation of the said axis and the bevil wheel at its inner end. This
axis is also suspended and works within hanging bracket supports.
To raise the gallery for the trimming of the wicks or the lighting of the lamp,
rotate the milled boss or turn in the proper direction, when the mitre bevil wheel
on the inner end of its axis, rotates the bevil pinion and so raises vertically the
sliding gallery and depending rods carried by it; that is, the threads of the
internally screwed middle or screw box of the bevil pinion acting upon the quick
threaded worm of the screwed guide rod, (which is incapable of rotation) raises
the said rod and gallery and other guide rod or rods, thereby allowing the wicks to
be exposed for trimming or lighting purposes.
To lower the gallery, turn the milled head in the opposite direction, when the
wormed guide rod is lowered within the screw box of the bevil pinion.
One great advantage in raising and lowering lamp galleries as described, is that
the gallery (and parts carried by it) is retained in any position to which it may
have been placed; that is the screw and bevil wheel arrangement permits the
gallery to be raised, supported and fixed in any position; and further, when the
gallery is lowered, or the burner closed, the parts cannot be accidentally displaced
or moved other than by the raising and lowering axis.
Instead of the bevil pinion being loose, it may be fixed upon the screwed guide
rod, and the screwed guide rod itself capable of rotating or turning within a rising
or falling screw box attached to the frame of the burner and moving with the
burner.

page_text: The bevil pinion may be substituted for a tangent wheel, and the bevil wheel
by a screw wheel which simply comes to the same mechanical arrangement as two
wheels. In both cases the object being to rotate a wheel having a screw box in its
centre wherein the screwed guide rod takes.
The gallery and burner of lamps provided with the improvements herein before
described, can be readily removed from the fixed part of the lamp for repair,
cleaning, renewing the wicks or for other purposes.
A collar may be placed on the lower end of the plain or worm guide rod to
prevent the parts from moving too high or in preventing the guide rods from being
withdrawn from their guides or sockets.
I will now proceed to describe with reference to the accompanying Drawing, the
manner in which the same is to be performed.
Figure 1 is a part vertical section of a hydro-carbon lamp, provided with gallery
raising and lowering mechanism constructed according to my invention, the gallery
being in its lowered or normal position. Figure 2 represents the same with the
gallery raised from the burner or wick tubes for lighting the lamp or for the
trimming of the wicks. Figure 3 is the same as figure 2, but at right angles
thereto. Figure 4 is a plan on the dotted lines A B figure 3. Figure 5 is the
gallery raising mechanism upon a larger scale. Figure 6 represents a modification
in which the necessary rotation of the bevil wheel is effected by raising and
lowering a lever, instead of rotating a turned or milled head.
Figure 7 shows the substitution of spur wheels for mitre wheels. Figure 8 is a
plan of the same.
The same letters of reference indicate corresponding parts in the several figures
of the Drawing.
a is the body of the lamp, and b the shade holder or gallery having upon its
underside, a bracket b², which carries two depending rods cd; the rod c is plain,
while the rod d is wormed with a quick threaded screw. These rods slide through
tubes or guides e e² in the lower part of the body of the burner. f is a bevil wheel
having through its middle, a screw box or internally wormed bush, through which
screwed hole the worm of the screwed rod d passes or takes. This bevil wheel is
suspended or supported by a bracket g, or is situated between the bracket g and the
plate which latter is slightly sunken to receive the front of the wheel and retain
it in position. i is a second bevil wheel, which gears with the first named wheel ƒ.
The wheel i is secured to the end of a spindle or axis i which passes through the
sides of the burner body, and is terminated by a turn but a milled head may be
substituted if necessary.
The bevil and its axis is supported by a hanging bracket and sleeve j, secured
to the underside of the division plate h.
To raise the gallery for the trimming of the wicks, or for the lighting of the lamp,
rotate the turn ³ in the proper direction when the bevil wheel i, on the inner end
of the axis, rotates the bevil wheel or pinion f, and so raises vertically the
sliding gallery and depending rods carried by it; thus the raising of the lamp
gallery is effected by the threads of the internally screwed middle of the bevil
pinion, acting upon the threads of the screwed rod, which latter is incapable of
rotation, but is capable of only sliding in a vertical direction. The upward move-
ment of the gallery is limited by the collar stops c d situated at the lower
extremities of the rods c d.
To lower the gallery, rotate the turn in the opposite direction, when the
reverse action takes place, and the gallery or shade holder is lowered to its normal
position.
By the means herein-described, for the raising of the lamp galleries, there is a
great advantage over those of the ordinary construction, inasmuch as the gallery
rests in any position to which it may have been brought, without any liability of
the gallery running back, unless the pinion be rotated; that is, the screw and
bevil wheel arrangement permits the gallery to be raised, supported and fixed in
any position, and cannot be moved other than by the raising and lowering axis.

page_text: In figure 6, the raising and lowering axis is made in the form of a handle which
is capable of moving up or down, so as to rotate or partially rotate the bevil wheel
to which it is attached, and so communicate motion to the bevil pinion whose axis
is wormed, and through which a quick threaded screw passes in the same manner
as already described. d is the screwed rod, i the bevil pinion, ƒ the bevil wheel,
and the handle.
The bevil wheelf may be increased in size and number of teeth, so as to raise
the gallery to the requisite height, when a slower pitched thread is employed.
In figure 7, spur gear is substituted for bevil gear. The action is the same other
than the movement of the operating handle or rod, which is worked in a horizontal
direction;
thus the handle 22 is connected to the spur wheel i which said spur
wheel is provided with pivot axes 23 which work in supporting plates h h. This
spur wheel gears with a pinion f which has a screwed eye through its middle, and
through which the wormed rod d takes.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
First. Raising and lowering lamp galleries, or shade holders, for lighting and
trimming purposes, by means of bevil gearing, and a wormed depending rod, carried
by the said gallery. The gearing consists of a bevil wheel secured on the inner
end of a turning axis which said bevil wheel gears with a second bevil wheel
supported by suitable brackets, and having within its middle, a screwed hole or
bush, through which the depending wormed rod takes. The vertical movement of
the gallery is determined by the wormed rod, and a second plain rod sliding in
guide tubes or sockets. The parts being constructed and acting substantially
as herein described and illustrated in figures 1, 2, 3 and 4 of the accompanying
Drawing; also the modification herein described and set forth in figure 7, in which
the arm or spindle for the raising and lowering, moves vertically, instead of
rotating.
Secondly. Raising and lowering lamp galleries, by means of spur gear, one of
the wheels of which has a screwed axial hole in its middle, through which a wormed
depending rod carried by the gallery, takes, while the other wheel carries a lever
or handle, substantially as and for the purpose herein described and set forth in
figures 7 and 8 of the accompanying Drawing.