An Improved Counterweight Arrangement for Electric Lamps.
Year: 1891

page_text: Date of Application, 14th Mar., 1891
Complete Specification Left, 12th Dec.. 1841-Accepted, 30th Jan., 1892
PROVISIONAL SPECIFICATION.
An Improved Counterweight Arrangement for Electric Lamps.
1, Jons MINT M
.
the County of Lanark, North Britain, Electrical Engineer do hereby declare the
nature of this invention to be as follows:-
This invention has for its object to improve the appearance of the counterweight
arrangement for electric lamps without unnecessarily complicating its construction.
The invention consists of a roofed plate and counterweight. The cord, usually a
Hexible insulator twin conducting wire, which suspends the electric globe or fitting,
is attached to terminals within the roof plate from which it passes down round a
pulley or counterweight, up and round another pulley in the roof plate and again
down and through the counterweight emerging from the centre of the lower part of
the counterweight and thence downwards to lamp or fitting. The hole through
the counterweight is preferably made slightly bent or oblique so that the slight
friction between the cord and the sides of the hole assist in maintaining the
counterweight at any desired height.
The pulleys may be covered by caps of china or other material or by a
decorative arrangement of metal. In the form most preferred for ordinary work
besides the flexible cord there is nothing seen externally to the counterweight and
roof plate, except three holes in bottom of roof plate, three in top of counter-
weight and one in bottom of counterweight, and the counterweight is usually ball,
egg, or acorn shape and made in two halves, the bottom half being screwed up into
the top half.
The roof plate may be fitted with a fusible cut out also a switch if desired.
Dated this 13th day of March 1891
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.
COMPLETE SPECIFICATION.
An Improved Counterweight Arrangement for Electric Lamps.
1, JOHN MACINTOSH MACKAY MUNRO, of 136 Bothwell Street, Glasgow, in
the County of Lanark, North Britain, Electrical Engineer, 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:—
My invention has for its object to improve the appearance of the counterweight
arrangement for electric lamps without unnecessarily complicating its construction.
In order that my invention may be properly understood and readily carried into
effect I have hereunto appended an explanatory sheet of drawings which I will
now proceed to describe.
Figure 1 is an elevation showing my improvement-.
Figure 2 is a section.
The invention consists of a roofed plate and counterweight. The cord A,
usually a flexible insulator twin conducting wire which suspends the electric globe
or fitting B is attached to terminals within the roof plate from which it passes
down round a pulley C or counterweight up and round another pulley D in the
roof plate and again down and through the counterweight emerging from the
centre E of the lower part of the counterweight and thence downwards to lamp or
fitting. The hole through the counterweight is preferably made slightly bent or

page_text: oblique so that the slight friction between the cord and the sides of the hole assist
in maintaining the counterweight at any desired height.
The pulleys C and D may be covered by caps of china or other material or by
a decorative arrangement of metal. In the form most preferred for ordinary work
besides the flexible cord there is nothing seen externally to the counterweight and
roof plate except three holes in hottom of roof plate, three in top of counterweight,
and one in bottom of counterweight and the counterweight is usually ball, egg,
or acorn shape, and made in two halves, the bottom half being screwed up into the
top half.
The roof plate 11 may be fitted with a fusible cut out, also a switch if
desired.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The improved counterweight arrangement for electric lamps substantially as
described and illustrated on the accompanying sheet of drawings.
Dated this 11th day of December 1891.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.