Improvements in the Construction of Guards or Protectors for Incandescent Electric Lamps, and other Glass or Breakable Articles.
Year: 1897

page_text: Improvements in the
Construction of Guards or Protectors for
Incandescent Electric Lamps, and other Glass or Breakable
Articles.
JAMES DICKSON, of 48, Gray's Inn Road, London, W.C., Wire Weaver and
Worker, and HENRY ERNEST BROWN, of 41, Evershot Road, Finsbury Park, London,
N., Assistant Works Manager, do hereby declare the nature of our said invention
to be as follows:-
The object of our invention is to construct guards or protectors, used for shielding
incandescent electric lamps or bulbs, gas globes, or chimneys and other brittle
articles, in an improved manner whereby the shock, caused by a blow, is absorbed
by the guard or protector and the cost of production is greatly reduced.
According to our invention, as applied to an incandescent electric bulb, we form
the guard or protector of metal wire (or wires twisted or plaited) wound spirally so
that when fitted to the bulb, the wire surrounds and completely encloses the bulb
but at a suitable distance therefrom. One end of the wire is wound cylindrically
to screw or fix on to the socket of the bulb, the other end being wound to fit over
the usual point on the bulb. The latter portion of the guard may be provided with
a rubber, asbestos or other yielding seat for the point and is preferably sunk
within the guard.
In some cases two or more of the coils may be connected by means of cross wires
or strips of metal in such a manner that the elasticity of the guard is retained thus
rendering the guard still more efficient for the purpose for which it is used.
It will thus be seen that if the guard is struck the coiled wire absorbs the blows
and effectually protects the lamp or bulb from injury.
Our improved guards may be used for packing purposes as a medium for pro- .
tecting the glass or other breakable portions of the articles from injury during
transit. The guards are so constructed that when not in use the coils may be
compressed so as to lie one within the other, thus lying flat and occupying but
little space for storage.
Dated 11th September 1897.
GEORGE DOWNING & SONS,
8, Quality Court, London, W.C., Agents.

page_text: Improvements in the Construction of Guards or Protectors for
Incandescent Electric Lamps, and other Glass or Breakable
Articles.
We, JAMES DICKSON, of 48, Gray's Inn Road, London, W.C., Wire Weaver
and Worker, and HENRY ERNEST BROWN, of 41, Evershot Road, Finsbury
Park, London, N., Assistant Works Manager, do hereby declare the nature
of our said invention and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:-
The object of our invention is to construct guards or protectors, used for
shielding incandescent electric lamps or bulbs, gas globes or chimneys and
other brittle articles, in an improved manner, whereby the shock caused by a
blow is absorbed by the guard or protector, and the cost of production of such
guard is greatly reduced.
And in order that our said invention may be particularly described and
ascertained, reference is hereby made to the accompanying drawing, illustrating
one method of constructing our invention, as applied to an incandescent electric
bulb.
a is the bulb containing the usual filament for electric lighting. b is the
socket of the bulb. c is a wire (or a number of wires twisted or plaited)
wound spirally so as to surround and completely enclose the bulb at a suitable
distance therefrom, as shown. The upper end of the wire c is wound round
the lower end of the socket b, and the lower end of the wire c is coiled round
the point of the bulb at d.
Between this short coil and the point of the bulb, a short piece of rubber
tubing or other elastic material is inserted at d, the point acting as a support
to the lower end of the wire guard, and the elastic tube acting as a cushion to
prevent the point being broken by a shock. Two or more of the coils may
be connected by means of cross wires or strips of metal, as shown at e e, whereby
the combined elasticity of two or more coils render the guard additionally effective
in absorbing shocks and protecting the bulb.
It will thus be seen that if the guard is struck the coiled wire absorbs the
blow and effectually protects the lamp or bulb from injury.
Our improved guards may be used for packing purposes as a medium for
protecting the glass or other breakable portions of articles from injury during
transit.
The improved guard may also be used to protect the mantles of incandescent
gas. lamps from injury, the guard being constructed of spirally wound wire or
the like and of the desired shape; the lower end is finished off as a base to fit the
chimney gallery or other part of the burner.
The guards are so constructed that when not in use the coils may be compressed
so as to lie one within the other in a flattened condition and occupying but little
space for storage.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the sume is to be performed, we declare that what
we claim is :-
1. The improved construction of guards or protectors for incandescent electric
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page_text: 2. The application and use of guards or protectors formed of metal wire (or
wires twisted or plaited) wound spirally surrounding and enclosing the article to
be protected at a suitable distance therefrom, substantially as and for the purposes
described.