Year: 1898

page_text: We, CHARLES ALBERT MILLER and FREDERICK JOHN MILLER, Managing
Directors of H. Miller and Company Limited, of Miller Street, in the City of
Birmingham, do hereby declare the nature of this invention to be as follows:-
This invention relates to detail improvements in acetylene gas lamps for various
purposes, but more particularly for use on cycles and common road vehicles and
has reference in the one part, to the fittings of the carbide or generating chamber,
in a second part, to the gas holder and filtering chamber; in a third part, to the
water-supply regulating apparatus; in a fourth part, to the burner, and in a
further part, to the formation of the body of the lamp to admit of the fitting
thereto of a parabolic reflector bell.
In carrying out our invention, as applied to a cycle lamp we make the body
part of the lamp of the figure of a spool with a narrow waist, and with the lower
part constituting gas holder and filtering chamber, to the mouth of which the
carbide or generating chamber is screwed or otherwise attached, whilst the upper
part of the said body is partitioned off from the lower part and constitutes a water
reservoir. The carbide holder, which forms the base of the lamp, consists of a drum-
shaped hollow vessel, flanged at its mouth and is preferably internally fitted with
a spring clip or holder for a carbide cartridge consisting of a thin metal case,
which is pierced prior to use with a series of holes to admit of water passing to
the enclosed carbide, as hereinafter described. The spring clip may consist of a
thin strip of metal, with branches or spring arms directed upwardly to embrace
the cartridge and rest ears at the lower edge upon which the said cartridge is
supported and when in position is kept rattling about within the generator
chamber.
The carbide chamber is separated from the gas holder and filter chamber by a
dise or diaphragm resting upon a ledge, flange or other stops formed on the inside
of the lower part of the gas holder and there held by a central hole taking over
the lower end of the water delivery nipple and being secured preferably by a nut
worming onto the outside of the said nipple. The diaphragm is pierced with a
small hole through which gas passes from the generator to the gas holder and after
passing and circulating through wool or other filtering medium for intercepting
carbide dust, then proceeds through a small passage to the burner, which may
consist of a pipe or plug surmounted by a burner nipple fitted with a needle
cap, which, when propelled and repelled by screwing, clears the hole of the gas
jet by removing foreign matters from the bore. The stem or lower part of the
pipe may be slightly coned or taper and has a gas hole through its side and fits
nto an annular chamber or hollow socket, having a gas way leading from the
iltering chamber, so that the burner part is made detachable and is affixed in
position by a cap or other nut. Or instead of employing a cap or like nut, the
ower end of the burner stem or plug may be tapped to receive a screw pin,
hich, when removed, admits of the burner stem part being detached.
The parabolic reflector or other bell has a chimney and cowl at the ton
F

page_text: glazed front, side lights and other accessories and is held to the middle or waist
of the body part by an encircling clip, the ends of the arms of which are drawn
together by a screw pin or otherwise.
The upper half of the body part constitutes the water chamber, and has depend-
ing from its closed bottom, a nipple, the screwed end of which passes as afore-
said, through the division between the generating and filter chambers, and has
the bore or passage provided at the upper part with a she coned seating for the
reception of a coned valve carried by a vertical stem, which has a part of it
wormed for taking into a screw socket or mouth coming above the she seating
of the regulating valve.
By rotating this stem through the means of an external head, the lower end is
propelled or repelled within the wormed socket, the coned end lowered or raised
within the valve seating and the supply of water to the carbide in the generating
chamber is regulated. A wire leads from the outlet of the nipple to one of the
holes in the carbide cartridge and down which the issuing water trickles, whilst
the top of the milled head of the stem has a graduated scale marked upon it and
also stops on the opposite sides, which, by coming against a fixed index or point,
determine the maximum and minimum extent to which the water regulating
valve may be opened.
The index pointer, which has a squared eye, is fitted onto a like shaped end
of a stem or the body part and is secured by a screw, so that by slacking the
screw, the pointer can be raised and turned out of the path of the stops to admit
of the head and stem being bodily removed from the lamp when required.
The upper and lower sections of the body part of the lamp are respectively pro-
vided with sleeves for containing the joint pins and rubber bearings of the com-
pensating spring back.
T 00:11 f Annet 1808
CHARLES ALBERT MILLER,
FREDERICK JOHN MILLER.
By Henry Skerrett,
Agent for Applicants.
We, CHARLES ALBERT MILLER and FREDERICK JOHN MILLER, Managing
Directors of H. Miller and Company Limited, of Miller Street, in the City of
Birmingham, 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 relates to detail improvements in acetylene gas lamps for various
purposes, but more particularly for use on cycles and common road vehicles and
has reference in the one part, to the fittings of the carbide or generating chamber,
in a second part, to the gas holder and filtering chamber; in a third part, to the
water-supply regulating apparatus; in a fourth part, to the burner, and in a
further part, to the formation of the body of the lamp to admit of the fitting
thereto of a parabolic reflector bell.
Figure 1 of the accompanying drawings represents an elevation of an acetylene
cycle lamp embodying our improvements.
Figure 2 is a topside plan thereof.
Figure 3 is a vertical section of the said lamp, showing the internal arrange-
ments.
Figure 4 is a cross section of the body part upon the dotted line, Figure 3.

page_text: Figure 5 is a side elevation of the parabolic reflector bell separately and Fig. 5ª
a plan thereof.
Figure 6 represents, principally in section, the whole of the component parts
of the lamp separately or detached from one another.
The same letters of reference indicate corresponding parts in the several figures
of the drawings.
:
In carrying out our invention, as applied to a cycle lamp we make the body.
part a of such a lamp of the figure of a spool with a narrow waist a', and with the
inside of the lower part a², constituting a gas holder and filtering chamber, to
the mouth 3, of which the carbide or generating chamber b, is screwed or other-
wise attached, whilst the upper part at, of the said body is partitioned off by
means of a wall or division 5, from the lower part and constitutes a water reser-
voir. The carbide holder b, which forms the base of the lamp, consists of a drum-
shaped hollow vessel with the contracted entrance b₁, outside wormed at 62, to
screw into the open lower end a³, of the body part whilst the said screwed part is
surrounded by an annular groove b³, adapted to contain a rubber seating washer b*,..
upon which the lower edge of the said body part bears when the two parts.
are connected together, thereby forming a gas-tight joint between them. Located
within the interior of the said base is a loose or removable bottom plate ³, carry-
ing a centrally disposed and open-ended tube or vertical shaft 67, perforated
throughout with a series of holes 68, through which water, which drips into the
tube from the water reservoir above, may pass to the carbide, which is packed
around the said perforated shaft as shown in Figure 1, and kept in place by a top
pressure plate 6, bearing upon the top of it, with a spiral spring 70, for keeping.
down the said plate disposed between it and the underside of the divisional wall c.
The carbide chamber is separated from the gas holder and filter chamber a²,
by a disc or diaphragm c, secured in position against an internal and annular
shoulder or contraction a, of the lamp body by means of a nut c¹, screwing onto-
the lower end of the water delivery nipple d. This diaphragm is pierced with a
small hole, through which gas passes from the generator to the gas holder and
after passing and circulating through wool or other filtering medium e, located
therein for intercepting carbide dust, it then proceeds through a small passage f¹,
to the burner f, which may consist of a pipe or plug surmounted by a burner
nipple f
The parabolic reflector or other bell g, has a chimney g¹ and cowl g², at the
top, a glazed front g³, side lights g, and other accessories and is held to the
middle or waist a¹, of the body part by an encircling clip 5, the ends of the arms
of which are drawn together by a screw ping, or otherwise.
The upper half of the body part constitutes the water chamber, and has depend-
ing from the divisional wall, constituting the bottom thereof, the nipple d,
the screwed end of which passes as aforesaid, through the division between the
generating and filter chambers, and has the bore or passage, provided at the
lower part with a she coned seating for the reception of a coned valve h
carried by a vertical stem h¹, which has the lower part 2, of it wormed for taking
into a screw socket or mouth dª, coming above the she seating of the regulating
valve.
This stem passes upwardly through the water reservoir and through a rubber
or like closure, fitted within the top end thereof, to the outside of the apparatus
and is there fitted with an external head, by the rotation of which, the lower
end is propelled or repelled within the wormed socket, the coned end lowered or
raised within the valve seating and the supply of water to the carbide in the
generating chamber is regulated. A wire d, extends through the outlet of the
nipple and into the perforated shaft in the carbide chamber and down which the
issuing water trickles, whilst the top of the milled head of the stem has a gradu-
ated scale, marked upon it and also stops &, ds, on the opposite sides, which,
by coming against a fixed index or point j, secured to the crown of the body
'

page_text: part, determine the maximum and minimum extent to which the water regulating
valve may be opened.
The index pointer, which may have a squared eye, may be fitted onto a like
shaped end of a stem j, on the body part and is secured by a screw, so that by
slacking the screw, the pointer can be raised and turned out of the path of the
stops to admit of the head and stem being bodily removed from the lamp, when re-
quired.
4
The upper and lower sections of the body part of the lamp are respectively pro-
vided with sleeves for containing the joint pins and rubber bearings of the
compensating spring back.
Instead of packing the carbide loosely around a perforated shaft as described
and shown, the interior of the carbide chamber may be internally fitted with a
spring clip or holder adapted to hold a carbide cartridge consisting of a thin
metal case, which is pierced prior to use with a series of holes to admit of water
passing to the enclosed carbide. The clip may consist of a thin strip of metal
with branches or spring arms directed upwardly to embrace the cartridge and
rests flanges or ears at the lower edge, upon which the said cartridge is supported
and when in position, is prevented from rattling about within the generator
chamber.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is;-
:-
First: In an acetylene lamp, regulating the flow of water from the reservoir
to the generating chamber by means of an externally operated valve, adjustable
by a screwing action within a valve seated nipple, located in the bottom of the
said water reservoir and leading into the generating chamber, which said valve
is raised and lowered by the rotation of a stalk passing through the apparatus and
terminating on the outside in a head or turn, substantially as described and set
forth.
-
Secondly In an acetylene lamp, the combination with the water valve stalk
as referred to in the preceding clain, of an external head, provided with a scale
or index with limiting stops, adapted to be employed in conjunction with a fixed
index or pointer secured to the body of the lamp substantially as and for the
purpose described and set forth.
Thirdly In acetylene lamps, making the body part of a spool shape with a
reduced waist into which the parabolic reflector bell fits or seats itself and is
there secured by a band or like clip carried by it encircling the said waist, sub-
stantially as described and set forth.
Fourthly: An acetylene cycle lamp, comprising a spool-shaped body part in-
ternally divided off into a water reservoir and a gas filtering chamber, a detachable
base constituting the generating chamber, an externally operated water-regu-
lating valve extending from the water reservoir through a removable bottom of the
filtering chamber and into the generating chamber, a perforated shaft around
which the carbide is placed, a burner in connection with the filtering chamber,
and a parabolic or like reflector bell enclosing the said burner and secured to the
reduced waste of the said body by a band clip, the whole of the said parts being
combined and operating, substantially as described and set forth.
Dated this 90th day of Manah 1900
CHARLES ALBERT MILLER.
FREDERICK JOHN MILLER.
By Henry Skerrett,
24, Temple Row, Birmingham, Agent for Applicants.