Improvements in Acetylene Lamps.
Year: 1899

page_text: Date of Application, 17th Apr., 1899
Complete Specification Left, 17th Jan., 1900-Accepted, 10th Mar., 1900
PROVISIONAL SPECIFICATION,
Improvements in Acetylene Lamps.
We, FRANK POWELL and FRANK HANMER, trading together as Powell &
Hanmer, of Chester Street, Aston, in the County of Warwick, Lamp Manu-
facturers, do hereby declare the nature of this invention to be as follows:-
This invention has reference to acetylene lamps and more particularly to those
which are made for use on bicycles and other velocipedes and on road vehicles
but can also be applied to acetylene lamps for other purposes when the lamp is
of that kind in which the water vessel is arranged at the top of the generator
said water vessel having a small outlet at the bottom closed by a suitable valve
operated from the top of the water vessel by which the quantity of water dropping
on to the carbide is regulated and shut off when required. This invention
consists of the hereindescribed improved means for filtering and purifying the
gas as it passes from the generator to the burner our invention also having the
effect of equalizing the light as it prevents the light from increasing when the
production of the gas is suddenly increased.
In carrying out this invention we provide in the lid or top of the generator
a filtering medium consisting of one or more pads or thicknesses of felt or other
suitable fibrous or other material which filtering medium is secured in the said
cover of the generator by a perforated metal plate which fits in the cover and is
there secured by the nut on the short tubular outlet or valve seating of the water
vessel which tubular outlet is arranged to pass through the filtering medium and
the perforated plate so that when this nut is screwed up the filtering medium. is
compressed between the perforated plate and the lid or cover of the generator.
As the gas is generated it passes through the perforations and the filtering
medium and through the outlet in the top of the generator to the burner. This
filtering medium arrests any moisture or small particles in the gas and thus
dries and purifies the same and improves the light and moreover if as is often the
case, the production of the gas in the generator is suddenly increased the filtering
medium equalizes the light as it prevents the gas passing to the burner more
rapidly at one time than another.
The filtering medium can readily be removed and renewed when required by
first removing the top of the generator from the generator itself and then remov-
ing the nut and the perforated plate from the inside of the generator top.
Dated this 15th dow of Annil. 1000
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.
COMPLETE SPECIFICATION.

page_text: facturers, 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:
This invention has reference to acetylene lamps and more particularly to those
which are made for use on bicycles and other velocipedes and on road vehicles
but can also be applied to acetylene lamps for other purposes when the lamp is
of that kind in which the water vessel is arranged at the top of the generator
said water vessel having a small outlet at the bottom closed by a suitable valve
operated from the top of the water vessel by which the quantity of water dropping
on to the carbide is regulated and shut off when required. This invention
consists of the herein described improved means for filtering and purifying the
gas as it passes from the generator to the burner our invention also having the
effect of equalizing the light as it prevents the light from increasing when the
production of the gas is suddenly increased.
We will describe this invention by referring to the accompanying drawing on
which Fig. 1 is a side elevation partly in section of an acetylene cycle lamp
with our invention applied; Fig. 2 is a plan and side elevation of the filtering
pad part of the said lamp and Fig. 3 is a plan and sectional elevation of the
perforated plate part of the said lamp which we use with the said filtering pad
as herein described.
The same letters of reference indicate the same parts in all the figures.
A is the water vessel arranged at the top of the generator B, the said water
vessel having a small outlet hole a¹ at the bottom closed by a suitable valve C
operated from the top of the water vessel by which the quantity of water dropping
on to the carbide D in the generator B is regulated and shut off as required.
E is the burner to which the gas as generated passes through the holes f in the
top of the generator. These parts are all of the usual kind.
In carrying out this invention we provide in the top 61 of the generator B,
which in this case forms the base or lower part of the lamp body, the filtering
medium consisting of a pad G (shewn separately by Fig. 2) made of a loose kind
of felt or other suitable fibrous or other suitable material provided with a central
eyelet g adapted to pass on to the short tubular outlet a from the water vessel.
This filtering pad G is secured to the top 61 of the generator D by the perforated
metal plate H which fits in the top part 61 and is there secured by the nut i
which is screwed on the short tubular part a of the water vessel which also
passes through the central hole h¹ of the perforated plate H so that when this
nut is screwed up the filtering pad G is compressed between the perforated
plate H and the cover 61 of the generator. The perforations in the plate H are
marked h. On the top of the carbide D there is the usual perforated cover
plate J to prevent the carbide shaking about and pressed on to the carbide by the
usual coiled spring k. As the gas is generated in the generator B it passes
through the perforations h³ in the perforated plate and through the filtering
pad G and through the outlets f in the top of the generator to the burner E.
This filtering pad G arrests any moisture or small particles in the gas and thus
dries and purifies the same and improves the light and moreover if as is often
the case, the production of the gas in the generator D is suddenly increased the
filtering pad G equalizes the light and prevents the gas from passing to the
burner more rapidly at one time than another. The density of the filtering pad
is easily regulated by the nut i.
The filtering pad can readily be removed and renewed by first removing the
top b¹ of the generator from the generator B (these parts being secured together
in any well known manner) and then removing the nut i and the perforated
plate H from the inside of the generator top b¹. We find that one pad of soft and
loosely made felt such as represented on the drawing is sufficient but if desired
two or more pads of felt or other suitable material may be used.
We
We are aware that prior to our invention acetylene lamps have been made with

page_text: a filtering medium for the gas to pass through, and terefore we do not claim this
broadly, but
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is;-
In an acetylene lamp of the kind herein referred to, the combination, with
the generator, of one or more gas filtering pads G and perforated plate H con-
tained in the generator top and through which the gas passes from the generator
to the burner, and means for compressing the pad or pads by the perforated
plate, substantially as set forth.
Dated thia 15th day of Tano 1000
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.