AN IMPROVED PORTABLE AND ADJUSTABLE GAS LAMP
Year: 1884

page_text: :
I JOHN EDWIN KEIRBY of Swinton near Manchester in the County of
Lancaster Engineer do hereby declare the nature of my invention for AN
IMPROVED PORTABLE AND ADJUSTABLE GAS LAMP to be as follows :-
The object of this invention is to manufacture a portable lamp for burning gas,
which may be readily applied to any ordinary gas bracket or gasalier in place of
the usual burner and may be placed on a table or shelf or in any other convenient
position, and at the same time the burner can be raised or lowered and adjusted in
any required position.
The lamp itself consists principally of a weighted stand provided with a vertical
rod or tube on which is an adjustable slide, which slide is capable of being fixed at
any height on the rod or tube by means of a thumb screw.
This slide carries the bracket or arm (at the end of which is the burner) and it
also carries a short metal tube for affixing the india rubber or other elastic tube for
conveying the gas to the lamp.
The bracket or arm is provided with a tap, and the slide is so constructed as to
carry the gas past the vertical rod without any escape: The burner has screwed
upon it a carrier of any convenient form for supporting the shade of the lamp, so
that the burner and shade can be adjusted to any height desired and fixed in
position by the thumb screw.
The slide may carry more than one arm, and each arm may be provided with
more than one burner if required.
In order to attach the other end of the india rubber or other elastic tube to the
fixed bracket or gasalier I provide a short bent or curved tube.
One end of this tube is fitted with a screwed nozzle which fits outside the screw
(below the burner) which usually carries the globe holder or carrier (which latter
may be removed if necessary) or the end of the small bent or curved tube is
chased with a screw thread which fits into the screwed opening from which the
burner has been removed.
To the other end of the bent tube a short metal pipe (provided with a small
coupling) is screwed and into this fits the end of the elastic tube.
It will be evident that by these means the lamp can be readily attached to any
ordinary gas bracket or gasalier.
GEORGE DAVIES,
Agent for the Applicant.

page_text: I JOHN EDWIN KEIRBY of Swinton near Manchester in the County of
Lancaster Engineer do hereby declare the nature of my invention for "AN
IMPROVED PORTABLE AND ADJUSTABLE GAS LAMP " 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 this invention is to manufacture a portable lamp for burning gas,
which may be readily applied to any ordinary gas bracket or gasalier in place of
the usual burner and may be placed on a table or a shelf or in any other
convenient position; and at the same time the burner can be raised or lowered
and adjusted in any required position.
Such being the nature and object of my said invention I will now proceed to
describe the manner in which the same is to be or may be performed or carried into
practical effect and in order that the same may be clearly understood I have
annexed hereunto a sheet of drawings illustrative thereof and have marked the
same with figures and letters of reference corresponding with those in the following
explanation thereof.
Fig. 1. in the drawing shows a general view of the lamp complete.
The lamp itself consists principally of a weighted stand a, a provided with a
vertical rod or tube b, b on which is an adjustable slide o, c which slide is capable
of being fixed at any height on the rod or tube by means of a thumb screw d, d.
This slide c, o (see also enlarged views Figs 2 and 3) carries the tubular bracket
or arm e, e (at the end of which is the burner f,f) and it also carries a short metal
tube g, g for affixing the india rubber or other elastic tube h, h for conveying the
gas to the lamp. The bracket or arm e, e is provided with a tap i, i, and the slide
c, c is so constructed as to carry the gas past the vertical rod b, b without any
escape by means of a curved passage k, k (see Fig. 2) One end of the tube e, e has
screwed upon it a carrier of any convenient form for supporting the shade 1, Z of
the lamp, so that the burner and shade can be adjusted to any height desired and
fixed in position by the thumb screw d, d.
The slide o, c may carry more than one arm, and each arm may be provided with
more than one burner if required.
In order to attach the other end of the india rubber or other elastic tube h, h to
the fixed bracket or gasalier I provide a short bent or curved tube m, m (seo
Fig. 4).
The end of the small bent or curved tube m, m is chased with a screw thread
which fits into the screwed opening from which the burner has been removed as
shown, or one end of this tube may be fitted with a screwed nozzle which fits the
screw (below the burner) which usually carries the globe holder or carrier (which
latter may be removed if necessary).
To the other end of the bent tube m, m, a short metal pipe n, n (provided with
a small coupling) is screwed, and onto this fits the end of the elastic tube; by
making the connections m and n in two pieces as shown the part m can be
screwed in without interfering in any way with the carrier or gas bracket and
the part n screwed to it afterwards.
It will be evident that by these means the lamp can be readily attached to any
ordinary gas bracket or gasalier.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the samo is to be performed I declare that what
I claim is the improved portable and adjustable gas lamp herein-before described
and represented on the annexed drawing consisting mainly of a vertical rod and
stand carrying an adjustable slide fitted with a tubular arm to carry the burner
and shade; the slide being provided with a passage to carry the gas past the
vertical rod and having opposite to the arm a short pipe whereby it is connected
by means of a flexible tube and short bent or curved pipe with a fixed bracket or
gasalier.
GEORGE DAVIES,
Agent for the Applicant,
4, St. Ann's Square, Manchester.