Improvements in Carriers for Conical Shades for Electric or other Lamps.
Year: 1891

page_text: Date of Application, 18th Sept., 1891
"Complete Specification 'Left, 16th June, 1892-Accepted, (6th Aug., "1892
.PROVISIONAL SPECIFICATION.
Improvements in Carriers for Conical Shades for Electric or
other Lamps.
'We 'BERNARD MERVYN DRAKE and JOHN MARSHALL GORHAM Electrical
Engineers, of 66 Victoria 'Street, 'in 'the 'City of Westminster, do hereby
declare the nature of this invention to be as follows:-
The object of our invention is to provide a metal carrier for conical shaped
shades, which will enable the shade to be easily removed, and shall also clip it in
such a way as to prevent the rattling noise which is so objectionable in the present
form of carriers, and at the same time to allow for expansion and contraction due
to heat without putting an undue stress on the glass or other substance of which
the shade is composed. The invention applies only to carriers which support the
conical shade at the bottom or point of greatest diameter, such as one employed
largely for desk standards in banks and others for electric lighting purposes.
These at present either rest loosely on a ring of metal, in which case they are
liable to be jarred out of position, and cause noise, or they are carried by three
arms, the ends of which are merely bent up to form a receptacle for the edge of the
shade, which is found to be troublesome, owing to the variation in the size of
the glass shades in the manufacture.
In our invention we form, in a tripod carrier, two arms with their ends bent so
as to receive the edges of the shade in the usual way, but at the extremity of the
third arm, we make the clip movable, and attach to it a spring, which tends to draw
it radially towards the centre.
When this clip is drawn outwards, the shade can be dropped into position,
and when released the clip presses the glass firmly against the fixed arms and
prevents rattling, while the tension of the spring is such that it permits of
expansion.
The movable clip can be made either by a metal scroll pivoted to the arm,
and provided with an extension projecting at right angles, to the end of which
extension piece the spring is attached; or the clip can be formed with two
guides to enable it to slide radially on the arm alongside of which the spring
is placed.
1
1.
1001
BERNARD MERVYN DRAKE.
JOHN MARSHALL GORHAM.
COMPLETE SPECIFICATION.
Improvements in Carriers for Conical Shades for Electric or
other Lamps.
We BERNARD MERVYN DRAKE and JOHN MARSHALL GORHAM Electrical
Engineers, of 66 Victoria Street, in the City of Westminster, 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:-
The object of our invention is to provide a metal carrier for conical shaped
shades, which will enable the shade to be easily removed, and shall also clip it in
such a way as to prevent the rattling noise which is so objectionable in the present
form of carriers, and at the same time to allow for expansion and contraction due
to heat without putting an undue stress on the glass or other substance of which the
shade is composed. The invention applies only to carriers which support the conical

page_text: shade at the bottom or point of greatest diameter, such as one employed largely for
desk standards in banks and others for electric lighting purposes.
These at present either rest loosely on a ring of metal, in which case they are
liable to be jarred out of position and cause noise, or they are carried by three
arms the ends of which are merely bent up to form a receptacle for the edge of the
shade, which is found to be troublesome, owing to the variation in the size of
the glass shades in the manufacture.
In our invention we form, in a tripod carrier, two arms with their ends bent so
as to receive the edges of the shade in the usual way but at the extremity of the
third arm we make the clip movable and attach to it a spring, which tends to draw
it radially towards the centre.
When this clip is drawn outwards, the shade can be dropped into position,
and when released the clip presses the glass firmly against the fixed arms and
prevents rattling, while the tension of the spring is such that it permits of
expansion.
The movable clip can be made either by a metal scroll pivoted to the arm,
and provided with an extension projecting at right angles, to the end of which
extension piece the spring is attached; or the clip can be formed with two
guides to enable it to slide radially on the arm alongside of which the spring
is placed.
In some cases for the sake of symmetry all the arms are fitted with a spring
catch at their extremities or in the case of combination gas and electric standards
two opposite arms may be fitted with the catches, two pipes conveying the gas
which are at right angles to the shade carrier forming a rigid support for
the shade.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is
The application of a spring catch or catches for shades substantially as described.
Dated this 15th day of June 1809