Improved Automatic Gas Igniter.
Year: 1898

page_text: Date of Application, 12th Dec., 1898-Accepted, 18th Feb., 1899
COMPLETE SPECIFICATION.
Improved Automatic Gas Igniter.
I, CARL FRIEDRICH PHILIPP STENDEBACH, Engineer, 45, Plagwitzerstrasse,
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; —
This invention relates to an improved automatic gas igniter which has the
advantages, as compared with other similar contrivances, of being proportionally
smaller besides which the whole arrangement of the casing is set in the central
axis of the burner whereby the new igniting contrivance can be attached to any
shape gas pipe without trouble; moreover the whole arrangement has an elegant
appearance.
In the drawing Fig. 1 is a longitudinal section of the igniting arrangement
illustrated on an enlarged scale, with a side view of the ignition channel, carrying
the expanding body and the igniter.
Fig. 2 is a plan view of the igniting arrangement.
The igniter comprises the cylindrical casing 1, Fig. 1 which is composed of
two or more parts and is furnished at the bottom with a screw thread 1 for
fixing to the gas pipe. In the upper part, a screw thread 1b is arranged for fixing
the burner and the mixing tube H. Inside this cylindrical case, the regulating
piston slide 6 is placed, the piston 6 working in the lower part of the casing 1.
The said piston slide is hollow and divided into two parts 6° and Gd by means of
the intermediate piece 6. These two hollow spaces of the regulating piston slide
have slots or perforations in their sides at the points 8 and 9, which enable the
ignition channel 10 and the hollow space below the piston 6 to be brought into
communication with the hollow space Gd of the regulating piston slide, as well
as the hollow space 6 of the latter with the hollow space in the casing 1. In
the upper hollow space of the regulating piston slide 6 is a metal piece 16
furnished with a longitudinal groove or slot in its circumference, for the passage
of the gas (Fig. 1 and 2). In this groove or slot the long arm of a two-arm lever 14
engages. On the shorter arm of this lever the metal rod 12 acts. Above the
metal piece 16 the end of the regulating piston slide is widened somewhat in the
form of a funnel and furnished with a fine sieve through which the gases are
passed.
The action of this igniting apparatus is as follows:
The gases enter through an opening of the cock into the part 6d of the regulat-
ing piston slide, reaching the ignition channel 10 through the slot 8 and cause
the primer 11 to become incandescent. As soon as this occurs, the gases flowing
out of 10 are ignited and heat the metal rod, or metal tube 12, so that the rod or tube
in expanding, exercises pressure on the short arm of the lever 14, the latter operat-
ing so that the regulating piston slide 6 is brought into communication with the
hollow space of the casing lying below the piston 6. Hereupon the gases pass through
the slot S below the piston 6 and push the same upwards with a force corre-
sronding to the pressure of the gas until it is arrested in the upper part of the
casing 1. In the process of raising the regulating piston slide by means of the

page_text: pressure of the gas, the slot or perforation 9 is brought into communication with
the interior of the casing 1, whereby the gases reach the hollow space 6 of the
regulating piston slide and pass thence to the burner by way of the metal piece 16
where they are ignited by means of the burning gases coming from the ignition
channel. Whilst this process is going on, the upward movement of the regulating
piston slide reaches its limit and the ignition is closed by the slide, whereby
the ignition flame is extinguished. As soon as the admission of gas is interrupted,
the regulating piston slide descends by gravity into the starting position.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I
claim is:
1. An arrangement in connection with gas igniters, in which an expanding
body within the sphere of the igniting flame by means of its expansion raises
a regulating piston slide, which regulates the admission of gas to the principal
and the ignition burner, and is seated in the central axis of the burner, so far
that the gases issuing from the lower compartment 6d of the regulating piston
slide and passing below the part C are able to effect a further raising of the
regulating piston slide for the purpose of opening the principal conduit and
closing the ignition conduit.
2. An arrangement in connection with gas igniters as claimed in Claim 1,
distinguished by a hollow regulating piston slide divided into two compartments 6°
and Gd, which compartments 6° and 6d, by means of suitably arranged slots or
perforations 8 and 9 in the said slide, can be brought into communication with
the ignition channel 10 and the space below 6" in a determined order, and so
that the gases entering the hollow space or compartment 6d escape through 10,
enter the space below 6, passing in the course of the raising of the regulating
piston slide, into the hollow space or compartment 6° and thence to the burner,
finally being shut off at 10, whilst when the action is discontinued the apparatus
returns in inverted order to the starting position.
Dated this 12th day of December 1898.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.