Improvements in Electric Lamp Fittings.
Year: 1898

page_text: MARIONAL SPECIFICATION.
Improvements in Electric Lamp Fittings.
We, JAN MEINES HUISMAN and HENRY CHARLES GOVER, both of Mansfield, 13,
Leigham Vale, Streatham, in the County of Surrey, Gentlemen, do hereby declare
the nature of this invention to be as follows:-
---
Large numbers of incandescent electric lamps are used with the glass bulb all
or in part coloured, embossed, silvered or otherwise similarly treated, so as to
make it ornamental or reflective or partly of either or both.
The cost of pro-
ducing lamps with bulbs of this description is expensive and when the lamp
fails the costly bulb is of no further use. At the present time effects as here
bescribed are in some measure obtained by enclosing a clear glass lamp within
an ornamental shade but the result is not nearly so good as if the bulb of the
lamp itself were coloured, ornamented or made reflective, because the shade used
for the purpose does not adapt itself to the ornamented glass shades which are
commonly used on electric lamp fittings.
Our invention consists in forming an envelope or enclosing cover for an in-
candescent electric lamp of a form and size closely resembling the form and size
of an ordinary lamp so as to preserve the lamp like appearance. Such envelope
or enclosing cover is made in two or more parts, one of which, the upper part, may
be attached to the holder ring at present used and called the "shade carrier."
Such upper part may be made of metal and enamelled or silvered or otherwise
made reflective and the lower part of glass of any colour ornament or shape as
may be required, the whole when complete resembling generally an ordinary
incandescent electric lamp but of a larger size than the actual lamp. Within
this enclosing cover is fixed in the usual manner an ordinary clear glass incan-
descent lamp. The breaking of the enclosed clear glass lamp will therefore not
affect the ornamental enclosing cover the effect of which will be restored by the
introduction of another clear glass lamp which is inexpensive comparatively to
the coloured ornamental lamp.
The accompanying drawing illustrates one method of applying our inven-
tion to an ordinary lamp fitting, but this may be modified in various
ways. In the drawing A represents an ordinary electric lamp fitting, a being
the holder attached to the chandelier, bracket or suspension cord. b is an orna-
mental glass shade of the kind usually employed. c is the usual shade carrier to
which we attach the upper part of our enclosing cover 9 which in this instance
we will suppose to be of metal, the inside of which is made reflective by enamel,
or by other means. This part has the lower edge turned into a flange at on
to which are attached two or more spring pieces h so formed that they will allow
a flange or bead formed on the lower glass part f of the enclosing cover to enter
easily and to be withdrawn and to hold securely when placed in position. The
bottom part of the enclosing cover is formed of glass or chiefly of glass and on
this part the colour ornament or shape which may be required to be introduced
or formed

page_text: The method of applying this invention to an ordinary electric light fitting would be
to remove the present shade carrier supporting the present glass shade and to
screw on in its place the upper portion of our enclosing cover which as shown
forms the carrying part for the existing shade. The clear glass incandescent lamp
can then be inserted and afterwards the lower part f of the enclosing cover.
Should the incandescent lamp fail, or should the lower portion of the enclosing
cover require cleaning, the lower part of the cower can easily be withdrawn and
the incandescent lamp can also be easily withdrawn and replaced.
Dated this 1st day of March 1898.
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
int Vincent Street, Glasgow, Agent for the Applicants.
Improvements in Electric Lamp Fittings.
We, JAN MEINES HUISMAN and HENRY CHARLES GOVER, both of Mansfield, 13,
Leigham Vale, Streatham, in the County of Surrey, Gentlemen, 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:-
Large numbers of incandescent electric lamps are used with the glass bulb all
or in part coloured, embossed, silvered or otherwise similarly treated, so as to
The cost of pro-
make it ornamental or reflective or partly of either or both.
ducing lamps with bulbs of this description is expensive and when the lamp
fails the costly bulb is of no further use.. At the present time effects as here
described are in some measure obtained by enclosing a clear glass lamp within
an ornamental shade but the result is not nearly so good as if the bulb of the
lamp itself were coloured, ornamented or made reflective, because the shade used
for the purpose does not adapt itself to the ornamented glass shades which are
commonly used on electric lamp fittings.
Our invention consists in forming an envelope or enclosing cover for an in-
candescent electric lamp of a form and size closely resembling the form and size
of an ordinary lamp so as to preserve the lamp like appearance. Such envelope
or enclosing cover is made in two or more parts, one of which, the upper part, may
be attached to the holder ring at present used and called the "shade carrier."
Such upper part may be made of metal and enamelled or silvered or otherwise
made reflective and the lower part of glass of any colour ornament or shape as
may be required, the whole when complete resembling generally an ordinary
incandescent electric lamp but of a larger size than the actual lamp. Within
this enclosing cover is fixed in the usual manner an ordinary clear glass incan-
descent lamp. The breaking of the enclosed clear glass lamp will therefore not
affect the ornamental enclosing cover the effect of which will be restored by the
introduction of another clear glass lamp which is inexpensive comparatively to
the coloured ornamental lamp.
The drawing filed with the Provisional Specification illustrates one method of apply-
ing our invention to an ordinary lamp fitting, but this may be modified in various
ways. In the drawing A represents an ordinary electric lamp fitting, a being
the holder attached to the chandelier, bracket or suspension cord. b is an orna-
mental glass shade of the kind usually employed. c is the usual shade carrier to
which we attach the upper part of our enclosing cover g which in this instance
we will suppose to be of metal, the inside of which is made reflective by enamel,

page_text: or by other means. This part has the lower edge turned into a flange at g¹ on
to which are attached two or more spring pieces h so formed that they will allow
a flange or bead formed on the lower glass part f of the enclosing cover to enter
easily and to be withdrawn and to hold securely when placed in position. The
bottom part f of the enclosing cover is formed of glass or chiefly of glass and on
this part the colour ornament or shape which may be required is to be introduced
or formed.
The method of applying this invention to an ordinary electric light fitting would
be to remove the present shade carrier supporting the present glass shade and to
screw on in its place the upper portion 9 of our enclosing cover which as shown
forms the carrying part for the existing shade. The clear glass incandescent lamp
can then be inserted and afterwards the lower part f of the enclosing cover.
Should the incandescent lamp fail, or should the lower portion of the enclosing
cover require cleaning, the lower part of the cover can easily be withdrawn and
the incandescent lamp can also be easily withdrawn and replaced.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
An envelope or enclosing cover for incandescent electric lamps, for the purpose
of diffusing light through interchangeable fancy or coloured glasses or partly
plain and partly coloured, composed of two or more parts of which one part is
attached to the usual holder ring or shade carrier or other convenient part of
the fittings and the other or others is or are attached to the first part by spring
or other catches and are interchangeable substantially as set forth.
Doted this 25th day of November 1898.
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62, Saint Vincent Street, Glasgow, Agent for the Applicants.