Regulating Device for Incandescent Gas Lamps.
Year: 1893

page_text: Date of Application, 27th May, 1893
Complete Specification Left, 1st Feb., 1894-Accepted, 21st Apr., 1894
PROVISIONAL SPECIFICATION.
Regulating Device for Incandescent Gas Lamps.
I, PAUL WILHELM DE BEAUX, Merchant, of 6 Markt, Leipzig, in the
Kingdom of Saxony, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object, to provide suitable means for regulating the
brilliancy of the flame and the consumption of gas in gas lamps which contain an
artificial incandescence body, as used in the Lewis, Auer (also called Welsbach)
and similar gas lamps, also to obviate the necessity of frequently relighting the
lamp by so constructing the lamp that it can be kept alight while burning an
insignificant quantity of gas.
.
The ring or base which supports the cone or hood of refractory material is
mounted on a short vertical tube communicating at its lower end with a cylindrical
mixing chamber which receives gas from the gas supply pipe through a narrow
orifice or several small outlets situated near the axis of the said chamber.
The cylindrical side wall of the mixing chamber which extends considerably
below and above the level of the gas outlet has vertical slots or perforations for
the admission of air to the mixing chamber, and is surrounded with a cylindrical
slide which has also slots or perforations corresponding in shape and size with
those in the circumference of the mixing chamber.
The said slide or sleeve carries a short regulating lever or handle for turning it
on its axis, thereby causing the slots in the slide to coincide more or less with
those of the mixing chamber. According to the position of the slide or sleeve, the
slots of the mixing chamber are covered by the same or left open, whereby the
admission of air to be mixed with the gas may be regulated at will.
For limiting the motion of the sleeve and regulating lever, the wall of the
mixing chamber may be provided with a stud or pin, the head of which projects
into a recess or horizontal slot of the sleeve.
The tap for regulating the gas supply is situated in the gas supply pipe leading
to the mixing chamber, preferably underneath the latter. In order to regulate
the gas and the air supply at the same time, a gas tap may be employed provided
with a two armed lever, one arm of which is slotted and receives a pin fixed to the
regulating slide, while the other arm serves as a handle.
The said regulating gas tap is situated immediately under the mixing chamber,
and its casing may form one piece with the same. In this case another gas tap
independent of that forming part of the burner is placed in the gas supply pipe
leading to the same.
Dated this 23rd day of May 1893.
FAIRFAX & WETTER,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Regulating Device for Incandescent Gas Lamps.
I PAUL WILHelm de Beaux, Watch Maker, of Markt 6 Leipzig in the
Empire of Germany, 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 :-
Up to the time of the present application for Patent, incandescent gas lamps

page_text: have been used without any regulating or adjusting arrangement, principally for
the reason that a really satisfactory device had not yet been found.
This defect is especially felt in restaurants, stores, factories and briefly every-
where where such lamps are used intermittently, because they must either burn
with full flame or be extinguished. The often repeated lighting of the flame is
however not only inconvenient but dangerous to the chimney and detrimental to
the incandescent mantle, more especially as the dropping off of a part of the match is
sufficient to cause the destruction of such mantle. On the other hand if the flame
is turned down, it will commence to roar and whistle, and shortly afterwards a
report will be heard and in most cases the mantle cracks and the flame becomes
extinguished, though the gas cock is not entirely turned off.
These defects are avoided by the present invention.
This improved device, shown in the annexed drawing, is of great simplicity and
allows any person (though unskilled in such lamps) by merely moving one lever to
either cause the flame to burn at full strength, or to restrict its power to any desired
degree without any danger, and even so far as to be scarcely visible without
extinguishing it entirely.
Figs. 1 and 2 of the annexed drawings represent the burner of an incandescent
gas lamp having its cock entirely open so that a light of full power is produced.
Fig. 3 shows said burner having its cock half way closed, whereby a flame of
half strength is produced, and Fig. 4 shows the burner with cock entirely closed.
To these positions the cross sectional views of the cocks shown in Figs. 1^ 2ª,
3 and 4, and on the other hand the cross sectional views of the air supply
passage, shown in Figs. 2, 3, and 4B, respectively correspond. Fig. 2 is a
vertical section through the gas and air supply passages in the plane of the axis of
the gas cock A.
The cock A has on its face, opposed to the bore of the casing D, two semi-
circular notches A' lying opposite each other, which according to the positions of
the lever B allow of a larger or smaller amount of gas to pass through. The
positions of the cock A shown in Figs. 14, 24, 3^, and 4^ respectively correspond
to those of the lever B in Figs. 1, 2, 3, and 4. The semicircular slots or
notches A', A' of the cock have this important advantage, that the diameter of
the passage way offered to the gas can be far more easily and exactly regulated
by the lever B than would be the case if an ordinary cock with medium sized
passage way were employed.
For comparison an ordinary cock is illustrated in Fig. 3c. To provide that the
flame will not be extinguished on placing the lever in the position shown in Fig. 4,
the cock is provided with a small passage way A3 (Fig. 2^) bored through it,
which allows a slight amount of gas to pass continually.
In the casing J in connection with the gas cock, and surrounding the nozzle E
holes are made, and similar holes are made in the surrounding sleeve F. If the
latter is turned the inner air holes will be closed or opened thereby. The lever B
carries in its upper prolongation a suitably shaped hole C in which the pin G of
the sleeve F engages. The hole C is of such form that the said pin G in any
position of the lever closely touches both edges of the hole and thus always
occupies the desired position. This arrangement allows of an easy and at the same
time exact adjustment of the sleeve F.
By this arrangement and the characteristic notches A' in the cock A, the
amount of air admitted through the sleeve F is always suitably proportioned to
the amount of gas passing through the nozzle E, the correctness of this proportion
being necessary for producing the desired flame.
In this manner a satisfactory burning of the gas is obtained without any
danger to the mantle. It may be here mentioned that in using ordinary cocks
(as in Fig. 3,) the diametrical passage way for the gas, when the cock is slightly
opened, is too small, so that the lamp will smoke because the correct proportion
between the amounts of gas and air admitted is not then obtained.
The lever B may be turned and regulated in either direction.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is,
An improved regulating device for incandescent gas lamps comprising a cock
with semicircular or equivalently shaped notches (A') provided on its face, and a
lever (B) having a particularly formed hole or slot (C) and adapted to secure a
proportionate combination of the cock with a rotary air inlet controlling slceve (F)
having a pin (G) guided in said slot (C) of the lever (B) substantially as and for
the purpose set forth.
2
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T
R. HADDAN,
Of the Firm of Herbert Haddan & Co.,
18, Buckingham Street, Strand, London, W.C., Agent for the Applicant.