Improvements in Cocks for Self-igniting Gas-burners.
Year: 1897

page_text: Date of Application, 4th Nov., 1897-Accepted, 19th Feb., 1898
COMPLETE SPECIFICATION.
Improvements in Cocks for Self-igniting Gas-burners.
I, MARTIN DUISBERG, Manufacturer, residing at 133, Köpenickerstrasse, Berlin,
Kingdom of Prussia, 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:-
The present invention relates to an improvement in the construction of the
cock of self-lighting gas-burners, for the purpose of making sure that the burner
is lighted.
The advantage of the present arrangement, as compared with the usual self
lighting devices with continuous ignition-flame, is, that the latter is dispensed
with, and as compared with the apparatus with periodically burning ignition.
flame and platina ignition the advantage of the present arrangement is absolute
safety and no danger in case of a refusal to light by the platinum tinder. This
object is attained by the peculiar construction of the plug and by an arresting-
device of the latter, which always holds the plug exactly in its position conditioned
by the phase of the igniting passage, so that lighting cannot possibly be missed
as is frequently the case especially in the self-lighting apparatus employed till
The cock is bored as usual and provided with a bye-pass borer for the
ignition-flame. The plug is bored eccentrically and in exact accordance with the
cock, as shown by Figs. 1 to 4.
now.
Fig. 14 show vertical sections of the cock with the different positions of its
plug.
Fig. 1 the plug closing both the channels a and r,
Fig. 2 the plug opening only the channel r,
Fig. 3 the plug opening both the channels a and r
Fig. 4 the plug opening or channel a.
The plug is further provided with a disk s with grooves s 1-s 4 and notches at
its circumference. Into these grooves engages a trailing-spring f provided with
a nose, which, with its plate f 0 (Fig. 5) and a piece f 1 bent upwards, is punched
and pressed out of one plate and holds this disk in certain positions. The bent-up
piece f1 together with the notch at the rim of the disk s forms a stop to the turn-
ing of the plug.
Fig. 5-8 are front views of the disk and trailing spring, viz.
Fig. 5 shows how the spring f engages in groove s 1 according to the position of
the plug in Fig. 1;
Fig. 6 shows the spring f engaged in groove s 2 according to the position of the
cock in Fig. 2;
Fig. 7 shows how the spring f engages in groove s 3 according to the position of
the plug in Fig. 3;
Fig. 8 shows the spring f engaged in groove s4 according to the position of the
plug in Fig. 4.
The action is as follows:
If the plug is turned from its position of repose (Fig. 1) into position I, the
spring snaps into the groove s 2 and the plug is fixed. Thus the gas streaving
Price 8d1

page_text: into the cock at E can only pass through the piper (viz. into the ignition tube),
where it produces the ignition flame by streaming against a platinum tinder. The
ignition flame being produced the plug is turned farther until the spring snaps
into the rest s 3.
In this position pipe r as well as the burner conduit a is partly open, so that the
burning ignition flame ignites the gas streaming into the burner. In the last
position of the plug, (Figs. 4 and 8) the ignition tube channel is closed while the
gas can pass freely into the burner.
Fig. 9 is a side-view of the cock with the arresting device.
The self-ignition thus takes place in consequence of the peculiar construction of
the cock in four exactly fixed phases of position and through the distinct marking
of the same a missing is absolutely impossible.
Another great advantage is the absence of any parts which may be damaged.
If, in consequence of any cause, the ignition tinder (platina sponge) should refuse,
the arrangement described also permits of the burner being lighted in the same
way as with an ordinary cock, i.c. with matches, which is an advantage not
possessed by the usual self igniting devices and which because of the frequent
missing of the latter, is most important.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
In a self-lighting gas cock the arrangement of an eccentrically bored plug in
firm connection with a disc (s), periodically arrested by a trailing-spring (f) and
stop (1) according to the four phases of the action of the self-igniting device,
substantially as and for the purpose set forth.
Dated this 2nd day of November 1897.