Improvements in Electric Igniting Apparatus, suitable for Lighting Tobacco Pipes and Cigars.
Year: 1895

page_text: Date of Application, 24th Apr., 1895
Complete Specification Left, 24th Jan., 1896-Accepted, 24th Apr., 1896
PROVISIONAL SPECIFICATION.
Improvements in Electric Igniting Apparatus, suitable for Lighting
Tobacco Pipes and Cigars.
I, FRIEDRICH WILHELM SCHINDLER, Manufacturer, of Kennelbach near
Bregenz, in the Austrian Empire, do hereby declare the nature of this invention
to be as follows:
This invention has for its object, to render electric pipe lighters and similar
igniting devices more durable and convenient of use, than those hitherto
known.
It relates more especially to the shape and mode of attachment of the igniting
body which carries the platinum wire, and to the method of mounting the artificial
resistance in the interior of the casing.
Instead of making said body of a thin plate of mica or asbestos fabric, as usual,
I may make it like a thimble or like a hollow cylindrical cap provided at the base
with a flange or outer rim for securing it to the metallic holder. The face of the
said cap has perforations and grooves for the platinum wire, and its circumference
has a helical groove through which the said wire is led to the face. The said
igniting body is made of specially tough and fine refractory earthenware or other
suitable refractory material and is free at the face as well as on the sides, being
clamped only at the base by means of a metallic cap which extends over the
rim or flange and is secured to a tubular metallic holder by means of a bayonet
joint.
The flange or rim of the igniting block has two diametrically opposite recesses
into which fit a pair of studs or other projections to prevent the accidental
turning of the said block.
The tubular holder mentioned above extends axially from the upper part or lid
of the casing which contains the artificial resistance and accessories, and is provided
with a handle. The artificial resistance is preferably a metal wire mounted on a
disc or flat block of refractory material which rests on a base plate by means of
springs serving at the same time to conduct the current. The current entering the
casing through the hollow handle, passes first into the metallic base plate, thence
through the said springs into the resistance wire, then into a wire which ascends
through a thin tube to an annular igniting head which receives the flange of the
igniting block and in which it is held by the metallic cap mentioned above,
thence through the wire of the igniting block, back to the interior of the said
igniting head, and through a second supporting tube down to the resistance
block.
The latter has a pair of diametrically opposite guide pius which extend through
the metallic base plate mentioned above; one of the said guide pins being
insulated from the base plate and connected with the return conductor passing
through the hollow handle.
Each of the said guide pins has a thin spring coiled around it between the base
plate and the resistance plate, and the base-plate being free on the sides, the base
plate together with the resistance plate and the parts resting on the same being
supported by an axial pin which connects the bottom of the casing with the
centre of the base plate.
For exchanging the igniting block, it is sufficient, to detach the metallic cap by
a turn of the bayonet lock, after which the cap together with the igniting block

page_text: can be taken off, in as much as the ends of the platinum wire passing through
the igniting block lie ou the face of the latter and are kept in contact with
the support of the igniting block by the pressure of the cap on the flange of the
same.
The upper half or lid of the casing is also attached to its lower half by means
of a bayonet joint.
According to the object, for which the igniting device is intended, the igniting
block may be a hollow cap as described above, or a flat plate or other convenient
body.
Dated this 02nd 1
FAIRFAX & WETTER,
Agents for the Applicant.
Improvements in Electric Igniting Apparatus, suitable for Lighting
Tobacco Pipes and Cigars.
I, FRIEDRICH WILHELM SCHINDLER, Manufacturer, of Kennelbach, near
Bregenz, in the Austrian Empire, 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 :-
My invention relates to improvements in electric lighters in which a glow wire
is placed in a casing, or a glow wire and a resistance wire of suitable length are
both placed in the same casing, and the object of my invention is to provide means
by which the parts constituting the apparatus are loosely connected to the casing
and to each other, and yet held firmly together, so that in case of exigency the
apparatus may be easily decomposed, the glowing, resistance and connecting wires
being likewise loosely connected and easily composed again.
I attain this object by the means illustrated in the accompanying drawings, in
which
Fig. 1 is a vertical section of one form of my apparatus, when containing a glow
wire and a resistance wire in the same casing;
Fig. 2, a top view thereof, the upper cover partially cut away;
Fig. 3, a horizontal section through line x-x, and Fig. 4 a similar section
through line y-y, of Fig. 1.
Fig. 5 is a vertical section of the upper part of a modification of Fig. 1, which
I prefer for pipe-lighting purposes.
Figs. 6 and 7 show longitudinal sections of modified forms of the glow-wire-
carrier of Fig. 5.
Fig. 8 is a modified form of my invention, corresponding to Fig. 1, and showing
the modifications to be made when the apparatus contains only a glow wire, the
resistance wire being placed out of the casing.
Figs. 9 to 12 show other modifications of my invention, corresponding to Fig. 1,
in which Figs. 9 and 11 refer to an apparatus containing a glow wire and a
resistance wire in the same casing, and Figs. 10 and 12 to an apparatus containing
only a glow wire.
Figs. 13 and 14 are modified forms of the cover of my apparatus.
Similar letters refer to similar parts throughout the several views.
The igniting body may be a thin plate 19, of mica or asbestos fabric, as usual
(Fig. 1), or it may be like a thimble or hollow cylindrical cap 19*, provided at the
base with a flange or outer rim for securing it to the metallic holder (Fig. 5).
The face of the said cap has perforations and grooves for the platinum wire, and
its circumference has a helical groove thereon, through which the said wire is led
to the face. The said igniting body is made of specially tough and fine refractory

page_text: earthenware or other suitable refractory material, and is free at the face as well as.
at the sides, being clamped only at the base by means of a metallic cap which.
extends over the rim or flange and is secured to a tubular metallic holder by means
of a bayonet joint.
The flange or rim of the igniting block may have two diametrically opposite
recesses, into which fit a pair of studs or other projections, to prevent the accidental
turning of the said block.
Referring to Figs. 1 to 4, a casing 1 is provided with a handle 2, through which
pass the connecting wires 3, 4, insulated against short circuiting in any well-known
manner. A cover 5, is detachably connected to the casing and held at its place by
friction, or a screw thread, or a pin and slot connection, or in any other convenient
manner. Another cover 6, is connected in a similar way to the cover 5. A socket
piece 7, projects from the base plate of the casing, and a box 8, of insulating material
is inserted into the said socket piece, in order to insulate the supporting ring 9,.
which is preferably made of metal and fits with a stud 10 in the box 8.
One of the connecting wires, say wire 3, is connected to ring 9 by a screw,.
so as to make contact with the ring, whilst the other wire, 4, is screwed to a
sleeve 11, of metal insulated from the ring by an insulating box 12.
Ring 9 is connected to a plate 13 of insulating material by studs 14, 15, fixed to.
plate 13, stud 14 fitting in an opening of the ring, and stui 15 into the sleeve 11
referred to heretofore. To the middle of plate 13 is fixed a downward projecting
pin 16, and a flat bent spring 17, screwed to pin 16, bears with its ends on ring 9,.
thus elastically supporting plate 13 and forming at the saine time au electric
conductor between the ring 9 and pin 16. Plate 13 carries the resistance wire 18.
(Fig. 3), as will be hereinafter described, and serves for supporting another-
plate 19 of refractory insulating material, by studs 20, 21, 22, 23, fixed to-
plate 13. Plate 19 contains the glow wire 24, the latter passing to and fro through
openings of the plate, thus forming a discontinuous igniting surface at the upper-
side of the plate 19, as shown in Fig. 2.
Plate 19 is provided with two opposite openings near its edge, which fit on pins.
projecting from the studs 20, 21, as indicated by pin 25 with respect to the stud 20,.
Fig. 2, the said pins securing plate 19 in such a position, that the ends 26, 27, of
the glowing wire 24, which project from the underside of plate 19 and preferably
terminate in horizontally coiled spirals, will just be opposite to the upper ends of
the studs 22, 23, thus making contact with the said studs.
Plate 19 consists preferably of mica, clay, asbestos, or a similar material of
little strength, and being comparatively thin in view of preventing needless-
absorption of heat, a ring 28, of sheet metal is fixed to studs 20, 21, projecting
beyond the upper ends of the same a distance equal to the thickness of plate 19, 80
that the latter is surrounded by the upper projecting part of the ring and thus.
secured against breakage. Ring 28 is insulated from studs 22, 23, either by leaving
a space between the ring and the studs, as shown in Figs. 1 and 2, or by interposing
to an insulating layer. Thus the electric current, as will be presently described,.
cannot pass from stud 22 to stud 23 unless running through the glow wire 24.
The electric circuit is as follows:-
Studs 15 and 23 are connected by a wire 29. The positive current therefore.
passes from the connecting wire 4 to sleeve 11, as heretofore stated, then to.
stud 15, and by the wire 29 to stud 23, and finally to the glow wire 24.
One end of the resistance wire 18 (Fig. 1) is connected to that end of pin 16-
which projects from the upper side of plate 13. It passes to and fro through
openings of this plate, as illustrated in Fig. 3, and is connected at its other end to
that end of stud 22, which projects from the underside of plate 13 (Fig. 1).
The negative current will therefore pass from connecting wire 3 through ring 9,.
spring 17, pin 16, the resistance wire 18, stud 22, and finally through the glow
wire 24 to stud 23.
The frame consisting of plate 13 and studs 20, 21, 22, 23, slightly pressed
upwards by the spring 17 and guided parallel by the studs 14, 15, and ring 28,.

page_text: which fits in the upper opening of cover 5. By these means plate 19 is pressed
against the inwardly projecting flange 30 of cover 6, and the upper ends of
studs 22, 23, against the coiled ends 26, 27, of the glow wire, so as to secure a close
contact.
Fig. 5 shows a modification of my invention for pipe igniting purposes,
covers 5', 6', studs 20¹ to 23¹, and the glow wire carrier 191, having a convenient
form so as to be introduced into pipe head, the parts of the apparatus not
illustrated in Fig. 5 being the same as shown in and described with reference to
Figs. 1 to 4.
The glow wire carrier may likewise consist of a plate run through by the glowing
wire; but in this case I prefer the form of a hollow cylinder 19', as shown in Fig. 5,
open at the bottom and closed at the top. The said cylinder is provided with a
shoulder in order to be held in its place by the upper projecting flange of the
cover 6¹, as heretofore described with reference to Figs. 1 and 2, and is spirally
grooved on its cylindrical surface.
The top plate of the cylinder is provided with openings. The glow wire 24¹ is
coiled on the cylinder 19 filling the said grooves, and then run to and fro through
the openings of its top plate. The coiled ends of the wire 24¹ are in contact
with the studs 221, 231, as heretofore described with reference to studs 22, 23, of
Figs. 1 and 2.
Figs. 6 and 7 show modified forms of the glow-wire carrier represented in
Fig. 5, carrier 19* of Fig. 6 being conical at its upper part and carrying the glow-
wire 24¹ in a spiral groove on its outer surface, as described with reference to
Fig. 5, whilst the carrier 19** of Fig. 7 is rounded on its upper end and ran through
by the glow wire 24'.
In the modifications represented in Figs. 8 to 12 the side-wall of casing 1 and
covers 5, 6, are omitted by reason of being just the same as described with reference
to Fig. 1.
Fig. 8 shows an apparatus which contains only a glow wire in the casing, the
resistance wire being placed out of the same.
There is no difference from Fig. 1,
but that plate 13 is deprived of a resistance wire, and a connecting wire 29¹ is
provided between studs 14 and 22, as clearly shown in Fig. 8. The positive
current from wire 4 passes the same way as heretofore described, whilst the negative
current from wire 3 passes through ring 9 to stud 14, then through wire 29¹ to
stud 22, and finally through the glow wire to stud 23.
Figs. 9 to 12 show modifications of my apparatus, in which the use of ring 9 is
dispensed with. To the middle of plate 13 is fixed a stud 16', by which the frame
consisting of plate 13 and studs 20, 21, 22, 23, is loosely connected to the base
plate of the casing. The slight upward pressure of the frame for the purpose
referred to heretofore, is brought about by spiral springs 171 of Figs. 9 and 10,.
and by flat springs 17*, 17**, of Figs. 11, 12, fixed to insulating blocks of the
base plate.
In the modifications represented in Figs. 9 and 11, the apparatus is supposed to
contain a glow wire and a resistance wire in the same casing, but only a glow wire
in the modifications shown in Figs. 10 and 12. The resistance wire 13 in Figs. 9.
and 11 is arranged as described with reference to Figs. 1 and 3. Stud 16¹ of
Fig. 9 fits in an insulating box 8' inserted into a socket 7' of the base plate, and
the wires 3, 4, are connected to studs 161 and 23 respectively.
The current of
wire 4 passes directly to stud 23, whilst the current of wire 3 passes from stud 16'
to the resistance wire 18, then through this wire to stud 22, and finally through.
the glow wire to stud 23.
In Fig. 10, in which the resistance wire is supposed to be placed out of the
casing, stud 16 fits directly into the socket 17", insulation not being needed, and
the wires 3, 4, are directly connected to studs 22 and 23 respectively.
The modifications represented in Figs. 11 and 12 differ from those of Figs. 9
and 10 in that the frame, consisting of plate. 13 and studs 20 to 23, is loosely
connected to the wires 3 and 4, the electric contact being made by the flat

page_text: springs 17x and 17** which bear against studs 14 and 15¹ of Fig. 11, and against
studs 1411 and 15' of Fig. 12.
The resistance wire 18 of Fig. 11 is disposed as heretofore described, and a
connecting wire 29" is provided between studs 16 and 14. A socket piece of
insulating material is fixed to the base plate of the casing. The current of wire 4
passes through spring 17** to stud 15', which forms the continuation of stud 23, and
then through the latter to the glow wire, whilst the current of wire 3 passes
through spring 17* to stud 14 and through wire 2911 to stud 16¹ and the resistance
wire 18 and then through the stud 22 to the glow wire.
In the modification represented in Fig. 12, in which the resistance wire is
dispensed with again, studs 14" and 151 form the continuations of studs 22 and 23
respectively, and the currents of wires and 4 pass directly to the said studs and
through the glow wire.
In Figs. 13 and 14 the upper covers 6 and 6¹, represented in Figs. 1 and 5, are
dispensed with, the flanges overlapping the glow wire carriers 19 and 19¹ respectively
and holding them in their places, being directly attached to the covers 5 and 5¹.
It will be obvious that if no resistance wire be placed in the apparatus, plate 13 can
be made of metal, instead of insulating material, the several studs being insulated
by insulating boxes as usual.
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 1
claim is:
1. In an electric igniting device, the combination of a casing, with a frame
consisting of a plate or block and supporting studs fixed thereto, a glow wire
carrier or igniting block separable from and adapted to lie above and be supported
by the said studs, and means for connecting the frame to the casing and for
keeping the glow wire carrier in close contact with its supporting studs, substantially
as described.
2. In an electric igniting device, the combination of a casing, with a frame
consisting of a plate or block and supporting studs fixed thereto, a glow-wire
carrier or igniting block separable from and adapted to lie above and be supported
by the said studs, a spring or springs elastically supporting the said frame within
the casing, and means for keeping the glow-wire carrier in close contact with its
supporting studs, substantially as described.
3. In an electric igniting device, the combination of a casing with a frame
consisting of a plate or block and supporting studs fixed thereto, a resistance-wire
placed in the said plate or block, a glow-wire carrier or igniting block supported
by the said studs, and means for connecting the frame to the casing and for
keeping the glow-wire carrier in close contact with its supporting studs, substantially
as described.
4. In an electric igniting device, the combination of a casing with a frame
consisting of a plate or block and supporting studs fixed thereto, a glow wire
carrier or igniting block separable from and adapted to lie above and be supported
by the said studs, a spring or springs elastically supporting the said frame within
the casing and an abutment connected to the casing to bear against the glow wire
carrier and keep it in close contact with its supporting studs, substantially as
described.
5. In an electric igniting device, the combination of a casing with a supporting
plate connected to its bottom, a plate or block of insulating material containing a
resistance wire and provided on one side with a supporting spring to bear against
the said supporting plate and with guide studs fitting in openings of the latter, and
on the other side with supporting studs, an igniting block carrying a glow wire
and resting on the said supporting studs, and means for closely connecting the
igniting block to its supporting studs, substantially as described.
6. In an electric igniting device, the combination of a casing with a supporting
plate connected to its bottom, a plate or block of insulating material containing a

page_text: resistance wire and provided on one side with a supporting spring to bear against
the said supporting plate and with guide studs fitting in openings of the latter, and
on the other side with supporting studs, a plate or block of refractory insulating
material containing a glow-wire and resting on the said supporting studs, a conductor
connecting one of the guide studs to one of the supporting studs, and means for
connecting the resistance wire to another of the supporting studs and to the
supporting spring respectively, substantially as described.
7. In an electric pipe lighter, a hollow igniting block of refractory material
closed at the top and containing a glow wire coiled helically on the cylindrical or
conical surface of the said block and running alternately to and fro through its
top-plate, substantially as described.
8. The various forms of igniting block and means for securing it to the casing,
as described and shown in the drawings.
Dated this 24th day of January 1896.
FAIRFAX & WETTER,
433, Strand, London, Agents.