Improvements in or Connected with the Lighting of Billiard Tables by Gas.
Year: 1888

page_text: Date of Application, 12th Dec., 1888
Complete Specification Left, 11th Sept., 1889-Accepted; 26th Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in or Connected with the Lighting of Billiard Tables
by Gas.
I THOMAS THORP of Whitefield in the County of Lancaster, Engineer &c. do hereby
declare the nature of this invention to be as follows:-
These improvements relate to the lighting of Billiard Tables by means of Gas and
their object is to increase the illuminating effect of the Gas. Billiard Tables are
usually lighted by 4 or more gas Burners, placed nearly horizontally, over each of
which is a paper or whitened Metal Shade for the purpose of arresting & reflecting
the upward rays, but in order to provent injury to the shades a considerable number
of the upward rays pass without reflection & serve no useful purpose.
In applying my improvenients to Billiard Table lighting I also make use of four or
more ordinary gas burners placed horizontally or nearly so, screwed into the gas supply
in the usual manner.
To the pipe in which the burner is screwed I attach preferably a stout metal plate
or elbow projecting in an upward direction but at an angle of about 40° & towards
the burner.
To the upper end of this plate is fitted a truncated sheet metal cone enamelled or
otherwise suitably whitened in its interior.
The hole in the top of the truncated cone, is preferably about one & a quarter
inches in diameter.
Resting on the top of the truncated cone & screwed to it in any convenient manner
but preferably by clips bent round its under edge is the shade rest, formed of
wire so as to leave about one inch of space all round between the shade & the
truncated cone.
When the gas is lighted the usual uprush to the flame is prevented by the hole
at the top of the truncated cone being only of about sufficient area to allow the
products of combustion to pass thus keeping the flame steady, and as the interior
of the cone is highly reflective, being in such close proximity to the flame, the
illuminating effect upon the table is considerably greater than the same burner will
yield with only the ordinary shade.
Dated this 11th day of December 1888.
THOMAS THORP,
Applicant.
COMPLETE SPECIFICATION.
Improvements in or Connected with the Lighting of Billiard Tables
by Gas.
I THOMAS THORP of Whitefield in the County of Lancaster, Engineer &c., 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
These improvements relate to the lighting of Billiard Tables by means of Gas and
their object is to increase the illuminating effect of the gas.
Billiard Tables are usually lighted by four or more Gas Burners placed nearly
horizontally, over each of which is a paper or whitened Metal shade for the purpose.
of arresting & reflecting the upward rays, but in order to prevent injury to the
shades a considerable number of the upward rays pass without reflection and serve
no useful purpose.

page_text: In applying my improvements to Billiard Table lighting I also make use of four
or more ordinary Gas Burners placed horizontally or nearly so, screwed into the gas
supply in the usual manner.
To the pipe in which the burner is screwod I attach preferably a stout metal plate
or elbow projecting in an upward direction but at an angle of about 40° and towards
the burner.
To the upper end of this plate is fitted a truncated sheet metal cone enamelled or
otherwise suitably whitened in its interior. The hole in the top of the truncated cone
is preferably about one & a quarter inches in diameter.
Resting on the top of the truncated cone & secured to it in any convenient manner,
but preferably by clips bent round its under edge, is the shade rest formed of
wire so as to leave about one inch of space all round between the shade & the
truncated cone.
When the gas is lighted the usual uprush to the flame is prevented by the hole at
the top of the truncated cone being only of about sufficient area to allow the products
of combustion to pass thus keeping the flame steady, and as the interior of the cone
is highly reflective, being is such close proximity to the flame, the illuminating effect
upon the table is considerably greater than the same burner will yield with only the
ordinary shade.
In order to regulate the supply of Gas to the burner, I preferably use a screw
fitted into the side of the connecting socket in such a manner that the internal passage
can be opened or closed at will. And in order that my invention may be fully
understood & readily carried into effect, I will proceed to describe the accompanying
drawing, which is a sectional elevation, reference being had to the figures & letters
thereon marked.
A is the pipe into which the burner B is screwed; C is the stout metal plate, and D
is the truncated cone, enamelled or otherwise suitably whitened in its interior. E is
the shade rest and F the shade which may be of cardboard or metal. G is the
régulating screw fitted into the connecting socket H.
The scale to which the drawing is made is only approximate as the apparatus may be
varied somewhat in size without prejudicially affecting it.
Having now particularly described & ascertained the nature of my said inven-
tion & in what manner the same is to be performed, I declare that what I
claim is,
.
The combination of the burner B, supply pipe A stout sheet metal plate Cor.its
equivalent, the truncated cone D & shade rest E or its equivalent as and for the
purposes shown and herein described.
Dated this 10th day of September 1889.
THOMAS THORP,
Applicant.