Improvements in or Connected with Gas and other Lamps.
Year: 1887

page_text: Improvements in or Connected with Gas and other Lamps.
I, RICHARD HUGH HUGHES of Atlas Works Hatton Garden in the County of
Middlesex Lamp Manufacturer do hereby declare the nature of this invention to be as
follows:-
In the "Bower" and other lamps having an up shaft to collect and carry off the
products of combustion from the flame in consequence of such up shafts varying in
length according to the height of the apartment in which they are hung the velocity
of the draft or up current has therby been materially affected and considerable
difficulty has been experienced in so adjusting this draft as to prevent injury to the
flame.
Now the object of my invention is to produce a ready means of adjusting this draft
and thereby regulating the flame in order to provide for any variation in the length
of the shaft.
For this purpose in cases where the ordinary up shaft or tube of the lamp is a
comparatively short one I place above such shaft an additional length of tube leaving
an air space or opening between such shafts or tubes and I regulate the area of this
air space or opening by causing one of the tubes or a collar thereon to approach or
recede to or from the other or 1 may employ any other suitable means to vary the
extent of such air space or opening.
In cases where the up shaft or tube is a comparatively long one I perforate such
shaft or tube at a given distance from the flame and I employ suitable means to regulate
the area of such air perforations or openings.
My invention may be employed either in connection with fixed or telescope gas or
other lamp hangings or brackets but when used in connection with telescope fittings I

page_text: form the air openings in that part of the shaft or tube which is connected with the
lamp.
By these means I am enabled to admit a regulated quantity of comparatively cold
air amongst the draft of heated air and products of combustion passing through the
shaft or tube from the lamp and by increasing or decreasing such quantity I am
enabled eith to retard or accelerate the velocity of such draft and thus give the
required adjustment to the flame.
RICHD. HUGH HUGHES.
By Harris & Mills,
23, Southampton Buildings,
Agents.
COMPLETE SPECIFICATION..
Improvements in or Connected with Gas and other Lamps.
I, RICHARD HUGH HUGHES of Atlas Works, Hatton Garden in the County of
Middlesex, Lamp Manufacturer, 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 :—
In the "Bower" regenerative and other lamps having an up shaft to collect and
carry off the products of combustion from the flame in consequence of such up shafts
varying in length according to the height of the apartment in which they are hung
the velocity of the draft or up current has thereby been materially affected and
considerable difficulty has been experienced in so adjusting this draft as to prevent
- injury to the flame.
Now the object of my invention is to produce a ready means of adjusting this draft
and thereby regulating the flame in order to provide for any variation in the length of
the shaft and generally to provide a ready means of adjusting such draft in gas and
other lamps.
For this purpose in cases where the ordinary up shaft or tube of the lamp is a
comparatively short one I place above such up shaft or tube an additional length of
tube leaving an air space or opening between such shafts or tubes and 1 regulate the
area of this air space or opening by causing one of the tubes or a collar thereon to

page_text: DESCRIPTION OF THE DRAWINGS,
Figure 1 represents a vertical section of a telescopic regenerative hanging gas lamp
of the "Bower" class having my invention applied thereto.
$6
"
Figure 2 represents an exterior view of a non-telescopic hanging gas lamp of the
Wenham class and Figure 3 represents a vertical section of a pillar or standard
lamp of a similar class illustrating my improvements.
Figure 4 represents the application of my invention to a gas lamp of the "Bower"
class carried by a telescopic bracket and Figure 5 shows the same applied to a railway
carriage roof lamp for burning oil.
Similar letters indicate corresponding parts in all the figures.
The general construction of the lamps herein shown being well known I will only
refer to such parts thereof as are intimately connected with my improvements.
Referring to Figure 1 a represents the ordinary up shaft connected with the lamp
for carrying off the products of combustion, & represents an additional length of tube
placed above such shaft a and c represents another tube within which the tube b is
capable of sliding telescopically for the purpose of permitting the lamp to be raised
and lowered bodily and also to enable the tube b to be adjusted in relation to the
shaft a as hereinafter described in order to regulate the area of the air space or
opening a between the adjacent ends of such shafts or tubes.
According to the arrangement shown in the drawings I obtain this adjustment by
means of a guide rod carried by the tube band furnished on its face with a toothed
rack 63 and travelling in a guide or bearing fixed to the shaft or tube a whilst a similar
but plain guide rod upon the opposite side of the tube b assists to give the required
steadiness to the movements thereof.
A pinion mounted upon a shaft revolving in bearings carried by the shaft or
tube a and furnished with a button or key (not shown) gears into the toothed rack b
and imparts the desired upward and downward motion thereto and to the tube b.
By these means I am enabled readily to cause the tube b to approach to or recede
from the shaft or tube a and thereby regulate the area of the air space or opening a¹.
In the arrangement represented at Figure 2 the shaft or tube a is formed with a
number of perforations, air spaces or openings a¹ therein and a sliding sleeve b
encircling such shaft a is employed to close the perforations, air spaces or openings a¹
more or less and thereby regulate the admission of air to the interior of the shaft or
tube a; a set screw 6* being employed to fix the sliding sleeve b in position in relation
to the shaft or tube a when the required adjustment has been obtained.
In the arrangement shown at Figure 3 the up shaft or tube a has a ring of per-
forations, air spaces or openings a' formed therein and a rotating sleeve or collar b
provided with corresponding perforations air spaces or openings is employed to
regulate the area of the air spaces perforations or openings a' and thereby control the
admission of air to the up shaft or tube a.
In the telescopic bracket lamp represented at Figure 4 a horizontal extension of
the shaft or tube a slides upon the fixed tube c packing being interposed between

page_text: such shafts or tubes to ensure a tight joint. In this case the shaft or tube a is formed
with a number of perforations air spaces or openings a¹ therein and a sleeve or
collar capable of rotating upon the shaft or tube a is employed to cover such openings
more or less and thereby regulate the ingress of air according to the effect desired to
be produced upon the flame of the lamp.
To the railway carriage roof lamp for burning oil represented at Figure 5 I have
applied my invention in a somewhat similar manner to that shown at Figures 3 and 4
the up shaft or tube a being formed with perforations, air spaces or openings a' therein
and a perforated rotating collar or sleeve b, provided with a set screw 6* being
employed to obtain the required regulation of the perforations air spaces or openings
in the up shaft or tube a.
By these means I am enabled to admit a regulated quantity of comparatively cold
air amongst the draft of heated air and products of combustion passing through the
up shaft or tube a from the lamp and by increasing or decreasing such quantity I am
enabled either to retard or accelerate the velocity of such draft, and thus to regulate
the supply of air to support combustion and obtain the required adjustment to the
flame of the lamp.
I would here remark that I do not confine myself to the prescise details of con-
struction herein shown and described as it is evident that such may be varied without
departing from the peculiar character of my invention.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
In a gas or other lamp the employment in or in connection with the up shaft a of
an air space or perforations or openings al capable of regulation in manner substantially
as herein shown and described and for the purpose stated.
Dated this 8th day of June 1887
RICHARD HUGH HUGHES.
By Harris & Mills,
23, Southampton Buildings,
Agents.