IMPROVEMENTS IN GALLERIES FOR GAS AND OTHER LAMP GLASSES
Year: 1877

page_text: LETTERS PATENT to George Tabrar, of 40, 41, and 42, Chandos Street, Strand,
in the County of Middlesex, for the Invention of "IMPROVEMENTS IN
GALLERIES FOR GAS AND OTHER LAMP GLASSES."
PROVISIONAL SPECIFICATION left by the said George Tabrar at the Office.
of the Commissioners of Patents on the 7th August 1877.
GEORGE TABRAR, of 40, 41, and 42, Chandos Street, Strand, in the County of
Middlesex. "IMPROVEMENTS IN GALLERIES FOR GAS AND OTHER LAMP GLASSES."
My Invention has for its object improvements in galleries for gas and other lamp
glasses, in order to afford facility of adjustment to glasses having different sizes of feet
or flanges. For this purpose I form one or more of the arms, telescopic or extensible,
and apply thereto springs so as to cause them to spring back to or towards their
normal position, whilst they are capable of being extended at will.
•
Each arm is provided with a claw to extend over the foot or flange of the glass
and hold it in position; and if desired, each arm may carry a portion of an ornamental
flange or ring, in addition to the said claw, so as to present the appearance of a
circular or ring gallery.
By the aid of my Invention I dispense with the adjusting screw usually employed,
and thereby prevent the breakages which frequently occur through forcing the screw
too tightly against the glass, whilst the latter is securely held in position.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Tabrar in the Great Seal Patent Office on the 7th February
1878.
GEORGE TABRAR, of 40, 41, and 42, Chandos Street, Strand, in the County of
Middlesex. "IMPROVEMENTS IN GALLERIES FOR GAS AND OTHER LAMP GLASSES."
My Invention has for its object improvements in galleries for gas and other lamp
glasses, in order to afford facility of adjustment to glasses having different sizes of
feet or flanges. For this purpose I form one or more of the arms, telescopic or
extensible, and apply thereto springs so as to cause them to spring back to or
towards their normal position, whilst they are capable of...being extended at will.
Each arm is provided with a claw to extend over the foot or flange of the glass
and hold it in position; and if desired, each arm may carry a portion of an ornamental
flange or ring in addition to the said claw, so as to present the appearance of a
circular or ring gallery.
By the aid of my Invention I dispense with the adjusting screw usually employed,
and thereby prevent the breakages which frequently occur through forcing the screw
too tightly against the glass, whilst the latter is securely held in position.
And in order that my said Invention may be more clearly understood and readily
carried into effect, I will proceed, aided by the accompanying Drawings, more fully
to describe the same.
DESCRIPTION OF THE DRAWINGS, .
Figures 1, 2, 3, and 4, are elevations and plans of galleries for lamp glasses
constructed according to my Invention; Figures 5, 6, and 7, are enlarged sectional
views of parts thereof, showing the mode in which I prefer to construct the same.
According to my Invention I form one or more of the arms a telescopic or
extensible, and apply thereto springs b so as to cause them to spring back to or
towards their normal position, whilst they are capable of being extended at will.
Each arm a is provided with a claw a¹ to extend over the foot or flange of the
glass and hold it in position; and if desired, each arm may carry a portion of an
ornamental flange or ring a², as shown at Figures 1 and 2, in addition to or as an
"extension of the said claw so as to present the appearance of a circular or ring
gallery.
-
The modes in which I prefer to construct the telescopic or extensible arms are
represented in the Drawings. In both cases I form the arm a tubular, and I form
it with capability of sliding upon a square rod c fixed into the boss or centre part
d of the gallery. In the plan represented at Figure 5, the square rod c has the spring
b first placed thereon so as to abut against the head thereof; the socket or guide a³,
which fits the said rod, is then placed on the rod, and the latter is then secured in
any suitable manner in the boss d, after which the arm a is passed over the rod cand
spring b, and screwed firmly on to the socket or guide a³.
In the plan represented at Figures 6 and 7 the socket or guide a³ forms part of or
is rigidly fixed to the arın a, and the latter has a hole at its outer end through which
the rod c with the spring b thereon is passed, and which hole is afterwards closed by
means of a screw plug a*.
By the aid of my Invention I dispense with the adjusting screw usually employed,
and thereby prevent the breakages which frequently occur through forcing the screw
too tightly against the glass, whilst the latter is securely held in position, and the
gallery is rendered capable, within certain limits, of accommodating itself to lamp
glasses with feet or flanges of different sizes.
Having thus described the nature of my said Invention and the mode in which
I carry the same into effect, I would have it understood that I do not confine myself
to the precise detals herein shown and described, as such may be varied without
departing from the peculiar character of my Invention, nor do I claim generally the

page_text: application of springs or spring pins to the arms of lamp galleries, as such have been
applied in various forms to lamp galleries, but in such cases the arms were not them-
selves extensible; but what I do claim is constructing one or more of the arms of
galleries for lamp glasses telescopic or extensible, in manner and for the purpose
substantially as herein shown and described.
In witness whereof, I, the said George Tabrar, have hereunto set my hand
and seal, this Seventh day of February, in the year of our Lord One
thousand eight hundred and seventy-eight.
GEORGE TABRAR. (L.S.)