Improvement in Regulating Devices or Valves for Gas Burners.
Year: 1897

page_text: Date of Application, 2nd Feb., 1897
Complete Specification Left, 2nd Dec., 1897-Accepted, 2nd Feb., 1898
PROVISIONAL SPECIFICATION.
Improvement in Regulating Devices or Valves for Gas Burners.
I, ALBERT LOSCHER, Engineer, of 14, Strode Road, Willesden Green, in the
County of London, do hereby declare the nature of this invention to be as
follows:-
In ordinary incandescent gas lamps the gas is supplied through a nipple which
has at the top several fine orifices distributed equally round the axis of the
burner, and the dimensions of the different parts are so chosen that at the
ordinary gas pressure, the quantity of gas passing through the orifices will
produce a maximum of light. If, however, the incandescent burner be mounted in
a locality which has a smaller gas pressure, the gas flowing through the orifices
will be insufficient, and it will not draw the necessary quantity of air.
My invention has for its object, to provide convenient means for regulating
the area of the orifices through which the gas escapes, and consequently for
regulating the supply of gas.
For this purpose I make tho orifices in the nipple large enough to suit the
lowest gas pressure, and provide the interior of the nipple with a regulating tube
hereinafter called a thimble, which has on its top a circular row of orifices corre-
sponding to those in the top of the nipple, and which can be turned on its
axis, more or less, in order to partially or wholly close the orifices in the nipple
from the interior, for which purpose the said thimble has a short radial arm or pin
extending through a horizontal slot formed in the circumference of the nipple
or of the tubular base on which the nipple is screwed.
The top of the thimble which contains the orifices parallel to its axis and fits
tightly upon the inner face of the orifices formed in the nipple, is preferably
conical, and the lower end of the thimble has a conical flange, which fits tightly
upon a conical seat formed in the baseplate of the nipple. By screwing
the nipple upon its baseplate, a gas-tight joint is produced between the top of the
thimble and the inside of the thimble, as well as between the base of the
thimble and its conical seat, so that the gas rising through the axial bore of
the baseplate can only pass up the interior of the thimble, and thence through
the row of orifices formed in the thimble and in the nipple.
If the radial arm or pin projecting through the side of the nipple or thimble
As mentioned above, is situated at one end of the circumferential slot, the
orifices of the thimble coincide with those of the nipple, and the quantity of gas
passing through the burner is therefore a maximum; if the said pin or arm
is in the middle of the slot, the orifices are half closed, and if it is situated at
the opposite end of the slot, the orifices are completely closed.
This regulating thimble may therefore be used instead of the ordinary gas tap
for shutting off the supply of gas.
If the burner is to be provided with a by-pass flame, the top of the thimble
has an axial perforation, and the top of the nipple has an axial orifice coinciding

page_text: with the said perforation. Consequently, a small quantity of gas will always
pass through the burner, at whatever angle the thimble may be turned.
The shape of the thimble at the top and bottom and the means for turning
it on its axis, may, of course, be varied according to requirements.
The construction may be modified so that the turning of the thimble on its
axis will regulate not only the main gas supply, but also the by-pass, in which
case the axial bore in the top of the thimble and nipple is omitted, the flange of
the thimble is made conical also at its upper face, and made to fit gas tight
against a conically turned seat forming part of the wall of the nipple. A small
gas duct is made from the bore of the thimble to the upper face of the flange,
and another duct extends from the conically seat mentioned above, to the circum-
ference or top of the nipple. As long as the two ducts coincide, the by-pass is
fully open; but by turning the thimble on its axis, the duct leading out of the
thimble will be closed more or less.
Although this regulating device is primarily intended for use in incandescent
gas lamps, it is applicable also for regulating or controlling the consumption of
gas in other gas burners, where the gas escapes through several orifices arranged
round the axis of the burner.
Tibi ond dow of Wolruary 1
100
FAIRFAX & WETTER,
Agents for the Applicant.
CUALI LEIN
Improvement in Regulating Devices or Valves for Gas Burners.
I, ALBERT LOSCHER, formerly of 14, Strode Road, Willesden Green, now of
144, High Holborn, in the County of London, 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 ordinary incandescent gas lamps the gas is supplied through a nipple which
has at the top several fine orifices distributed equally round the axis of the
burner, and the dimensions of the different parts are so chosen, that at the
ordinary gas pressure, the quantity of gas pussing through the orifices will
produce a maximum of light. If, however, the incandescent burner be mounted in
a locality which has a smaller gas pressure, the gas flowing through the orifices
will be insufficient, and it will not draw the necessary quantity of air.
My invention has for its object, to provide convenient means for regulating
the area of the orifices, through which the gas escapes, and consequently for
regulating the supply of gas.
For this purpose I make the orifices in the nipple large enough, to suit the
lowest gas pressure, and provide the nipple with a regulating tube, herein-
after called a thimble, which has on its top a circular row of orifices corre-
sponding to those in the top of the nipple, and which can be turned on its
axis more or less, in order to partially or wholly close the orifices in the
nipple, for which purpose the said thimble has a short radial arm or pin
extending through a horizontal slot formed in the circumference of the nipple
or of the tubular base on which the nipple is screwed.
The top of the thimble which contains the orifices parallel to its axis and fits
tightly upon the inner face of the orifices formed in the nipple, is preferably
conical, and the lower end of the thimble has a conical flange, which fits tightly
upon a conical seat formed in the baseplate of the nipple. By screwing the
nipple upon its baseplate, a gas-tight joint is produced between the top of the

page_text: thimble and the inside of the nipple, as well as between the base of the
thimble and its conical seat, so that the gas rising through the axial bore of
the baseplate can only pass up the interior of the thimble, and thence through
the row of orifices formed in the thimble and in the nipple.
If the radial arm or pin projecting through the side of the nipple or thimble
as mentioned above, is situated at one end of the circumferential slot, tho
orifices of the thimble coincide with those of the nipple, and the quantity of gas
passing through the burner is therefore a maximum; if the said pin or arm
is in the middlo of the slot, the orifices are half closed, and if it is situated at
the opposite end of the slot, the orifices are completely closed.
This regulating thimble may therefore be used instead of the ordinary gas tap
for shutting off the supply.
If the burner is to be provided with a by-pass flame, the top of the thimble
has an axial perforation, and the top of the nipple has an axial orifice coinciding
with the said perforation. Consequently, a small quantity of gas will always
pass through the burner, at whatever anglo the thimble may be turned.
The shape of the thimble at the top and bottom and the means for turning
it on its axis, may, of course, be varied according to requirements, and the
thimble may be placed outside the nipple, instead of inside.
The construction may be modified, so that the turning of the thimble on its
axis will regulate not only the main gas supply, but also the by-pass, in which
case the axial bore in the top of the thimble and nipple is omitted, the flange of
the thimble is mado conical also at its upper faco and made to fit gastight
against a conically turned seat forming part of the wall of the nipple. A small
gas duct is made from the bore of the thimble to the upper face of the flange,
and another duct extends from the conical seat mentioned above to the circum-
ference or top of the nipple. As long as the ducts coincide, the by-pass is
fully open but by turning the thimble on its axis, the duct leading out of the
thimble will be closed more or less.
In the accompanying drawings:
Fig. 1 is a vertical section of a regulating device embodying my invention:
Fig. 2 is a side view and Fig. 3 a plan of the same; Figs. 4, 5 and 6 represent
a modification. A indicates the nipple, provided at the top with a circular row
of perforations a, a, and screwed upon the base D. B indicates the thimble pro-
vided at the top with a conical face fitting against the correspondingly conical
inside of the nipple and provided with an equal number of orifices or vertical
perforations. At the lower end the thimble is widened out into a conical flange.
C is a radial pin fixed to the said flange and projecting through a circumferential
slot of the nipple A. e is a by-pass formed in the nipple A and leading to a
minute tube E extending upward into the incandescence mantle, not shown.
To ensure a tight fit, the thimble B may be faced with a suitable packing
material or pressed upward by spring action.
Figs. 4 to 6 represent a simpler burner, designed for heating purposes, the
top of the thimble B' and nipple A having 5 minute perforations a. The two
parts are connected by a screw nut D', which may contain a coiled spring pressing
against the flange a³, and is provided with a handle or button C³.
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 [
claim is:-
1. A regulating device for gas burners, comprising in its construction a pair
of circular tubes fitting coaxially one into the other, each tube being open at
the inlet end and provided at the conical outlet end with one or more orifices
placed excentrically to the axis of the tubes, and means for turning one tube
relatively to the other, substantially as and for the purpose described.
an
5 2. In a regulating device for gas burners, the combination of
inner tube, with an outer tube mounted coaxially on the inner tube,

page_text: means for turning one tube relatively to the other, and a spring for pressing
one tube axially against the other, each tube being open at one end and provided
at the other end with one or more orifices, so arranged that by turning one tube,
its orifices may be caused to coincide with those of the other more or less, sub-
stantially as and for the purpose described.
3. In regulating gas burners, the combination of a circular inner tube, with a
circular outer tube fitted coaxially upon the inner tube, each tube being open at
the inlet end and closed at the outlet end, but provided with a series of orifices
arranged round the axis of the tubes, one tube being adapted to turn on its
axis and provided with a by-pass so arranged, that by turning the tube, the clear
area of the said orifices as well as that of the by-pass may be reduced more or
less, substantially as described.
4. The various forms of gas-regulating devices or regulating gas burners
described and illustrated by the drawings.
FAIRFAX & WETTER,
Agents, 37 and 39, Essex Street, Strand, London.
FAIRFAX & WETTER,
Agents, 37 and 39, Essex Street, Strand, London.