Improved Igniting Apparatus for Safety Lamps.
Year: 1889

page_text: Date of Application, 6th Sept., 1889
Complete Specification Left, 6th June, 1890-Accepted, 30th Aug., 1890
PROVISIONAL SPECIFICATION.
Improved Igniting Apparatus for Safety Lamps.
L, AUGUST FISCHER, Manufacturer, of Homberg on the Rhine, Germany, do hereby
declare the nature of this invention to be as follows:-
In ordinary igniting apparatus the inflammable substance is generally made of
explosive matter, to be ignited by percussion. When ignited, it produces incandescent
sparks, which may pass through the meshes of the protecting gauze-cylinder of the
lamp and thus become dangerous.
To avoid this danger, I employ, instead of an explosive substance, an inflammable
substance which is not ignited by a blow but by friction.
The igniting tape consists of a ribbon of paper or calico impregnated so as to
render it uninflammable, and carrying inflammable pills of phosphorus at short
distances apart.
The igniting apparatus may be attached to the oil or benzine receptacle in the
usual way. The igniting ribbon is wound off a first roller and wound on a second
roller by turning a spindle which passes through the bottom of the casing and serves
to set in motion a pair of bevel wheels. On its travel the ribbon is supported and
guided by other rollers; and the friction necessary for ignition is produced by an
elastic lever which presses upon the travelling ribbon as the latter passes over a guide
roller.
If the spindle is turned by means of a button that is fixed to its outer extremity, the
bevel gear situated at the inner end of the spindle will turn the empty roller on which
the tape is to be wound, and thereby set the latter in motion by winding it off the full
roller. During the motion of the ribbon, one of the inflammable pills will be subjected
to the pressure of the elastic friction lever; and thereby produce a short flame which
ignites the wick of the lamp.
Dated this 6th day of September 1889.
FAIRFAX & WETTER,
433, Strand, London, Agents.
COMPLETE SPECIFICATION.
Improved Igniting Apparatus for Safety Lamps.
I, AUGUST FISCHER, Manufacturer, of Homberg-on-the-Rhine, 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 igniting apparatus the inflammable substance is generally made of
explosive matter, to be ignited by percussion. When ignited, it produces incandescent
sparks, which may pass through the meshes of the protecting gauze-cylinder of the
lamp and thus becoine dangerous.
To avoid this danger, I employ, instead of an explosive substance, an inflammable.
substance which is not ignited by a blow, but by friction.
In the following description, reference will be made to the accompanying drawings,
in which
Fig. 1 is a longitudinal section,
Fig. 2 a cross section, and
Fig. 3 a plan of an igniting apparatus and lamp embodying my invention, while

page_text: The igniting tape consists of a ribbon a of paper or calico impregnated so as to
render it uninflaminable, and carrying inflammable pills of phosphor at short distances
apart.
The igniting mechanism is connected with the oil reservoir by a plate, in such a
manner, that the actuating spindle i projects outside the receptacle. This spindle i
carries a tooth-wheel k which gears into the tooth-wheel k¹ and sets the same in
motion when the spindle i is turned by the key l.. On the axle m of the wheel k¹ is
fixed one end of the igniting tape by means of a clip. The other end is fixed on the
stud n.
During the use of the instrument, the ribbon is gradually wound off the
pin n and wound on to the pin m, passing on its way over three guide rollers p, p², p²
and underneath the elastic lever o which produces the friction necessary for ignition.
For igniting the lamp, the spindle i is turned by means of the button 1, so that the
bevel gear k k situated at the inner end of the spindle will turn the empty roller m on
which the tape is to be wound, and thereby set the latter in motion by winding it off
the full roller n. During the motion of the ribbon, one of the inflammable pills will
be subjected to the pressure of the elastic friction lever o, and thereby produce a short
flame which ignites the wick of the lamp.
In order that the igniting tape may he placed more easily under the friction lever,
the latter is provided with a hinge, which allows the lever to be turned back, after the
attaching screw t has been released.
Having now particularly described the nature of my invention and in what manner
the same is to be performed, I declare that I claim :-
An igniting device for safety-lamps, comprising in its construction an impregnated
ribbon a carrying inflammable pills, said ribbon being propelled by means of
rollers m n under the influence of tooth wheels k, k and caused to pass beneath a
hinged friction spring o, whereby the inflammable mass is ignited and the flame com-
municated to the lamp.
Thand thin 5th day of Lu 1800
AUGUST FISCHER.
By Fairfax & Wetter,
433, Strand, London, Agents.