IMPROVEMENTS IN THE GALLERIES OR GLASS HOLDERS OF GASALIERS AND LAMPS
Year: 1881

page_text: LETTERS PATENT to Isaac Sherwood, of Birmingham, in the County of
Warwick, Manufacturer, for an Invention of "IMPROVEMENTS IN THE
GALLERIES OR GLASS HOLDERS OF GASALIERS AND LAMPS."
PROVISIONAL SPECIFICATION left by the said Isaac Sherwood at the Office
of the Commissioners of Patents on the 10th February 1881.
ISAAC SHERWOOD, of Birmingham, in the County of Warwick, Manufacturer.
"IMPROVEMENTS IN THE GALLERIES OR GLASS HOLDERS OF GASALIERS AND
LAMPS."
"
"
This Invention refers to a method for more effectually preventing the tilting or
rocking, and more effectually securing the globes or glasses of gasaliers and lamps
in their holders, and is particularly applicable to the class known
as comet
holders. To effect this I pin to one of the arms, or more if necessary, a free
cranked lever which is governed by a spring of any suitable construction.. One
arrangement may be a spring doubled upon a pin by which it is attached to the
arm at a point below the lever. The upper part of the spring presses upon the
upper part of the lever, and the lower part upon the underside, thus allowing
the lever to work to and fro. The glass being placed in position on the arms, the
spring presses the upper part of the lever sufficiently close to the inside of the glass
without touching it, and thus prevents the glass from tilting.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Isacc Sherwood in the Great Seal Patent Office on the 10th August
1881.
ISAAC SHERWOOD, of Birmingham, in the County of Warwick, Lamp Manufacturer.
"IMPROVEMENTS IN THE GALLERIES OR GLASS HOLDERS OF GASALIERS AND
LAMPS."
This Invention refers to a method for more effectually preventing the tilting or
rocking of the globes or glasses of gasaliers and lamps, and the more efficiently

page_text: securing them in their holders, and is particularly applicable to the class known as
"comet holders." To effect this I pin to one of the arms, or more than one if
necessary, a free cranked lever which is governed by a spring of any suitable
construction, and formed of any appropriate metal. One arrangement may be a
spring doubled upon a pin by which it is attached to the arm at a point below the
lever. The upper part of this spring presses upon the upper part of the lever, and
the lower part upon the underside, thus allowing the lever to work to and fro.
The glass being placed in position on the arms, the spring presses the upper part of
the lever sufficiently close to the inside of the glass without touching it, and thus
prevents the glass from tilting.
Figure (1) represents a gallery with a portion of a globe shewn resting on the
arms.
Figure (2) one of the arms detached, and with the spring lever upon it.
Figure (3) a modification of the same.
(a) is a portion of a lamp globe resting on the arms of the gallery; (b) is a ring
to which the arms (c, c, d,) are attached, those marked (c, c,) being of the usual
form, and that marked (d) having a lever (e) pinned to it as at (f); (g) is a metal
spring doubled over a stud (h). The spring (g) is furnished at (i) with a small clip
bearing on the upper part of the lever (e). The underpart of the spring bearing
on to the lower part of the lever below the fulcrum pin (f), thus the globe (a) is
clipped between the upper end of the arm (d) and the lever (e), and is prevented
from rocking or tilting though it may be free upon the other arms of the gallery.
A slight pressure of the thrumb upon the lower limb of the lever (e) holds it back
if necessary whilst placing or releasing the globe.
•
Figure (3) shews a modification of the above described arrangement of arm and
spring lever, varying the form of the spring, which is a flat spring (k) pinned to the
arm at (1) and bearing upon the underpart of the lever, so as to maintain it
in position shewn until pressure is applied to the lower limb of the lever to
withdraw it.
Having thus described the nature of my said Invention, and the manner in
which the same is to be performed, I do not confine myself to these precise details,
but I claim,
The improvements in the galleries or glass-holders of gasaliers and lamps in
which a clip or lever which is governed by a spring is attached to one or more of
the arms or krackets for the purpose of keeping the globe or glass steady, as herein
more fully set forth and specified.
In witness whereof, I, the said Isaac Sherwood, have hereunto set my hand
and seal, this Ninth day of August, in the year of our Lord One thousand
eight hundred and eighty one.
ISAAC SHERWOOD. (L.S.)