Year: 1886

page_text: I, CARL VON BUCH of 17 Cavendish Place, in the County of Middlesex, (Chemist,
do hereby declare the nature of this invention to be as follows :-
My invention relates to the better construction and support of the envelope or
material applied to the orifice of a Bunsen or other gas burner to be rendered
incandescent by the heat thereof, and is designed to better support the said
envelope or material, and to protect it from the destructive effect of draught or
accidental blow or shake, so as to render it more durable in use.
My invention particularly relates to such incandescent materials or envelopes as
are in their nature essentially fragile, and I combine with such fragile envelope or
material a support or supports of platinum wire, disposed in such a way as most
readily to protect the said envelope or material from accidental breakage, and at
the same time to provide a frame by which the said envelope or material may be
attached to the mouth, of the said bunsen or other gas burner, and further to
support an external envelope of mica or other similar transparent refractory
material when required, to protect the incandescent envelope or material from
external draught or accidental touch.
Conveniently I may construct my support frame in a skeleton cylindrical form,
so as to adapt itself to the support of the aforesaid external cylinder of mica, and
at the same time the lower ring, or projections therefrom, will provide a convenient
attachment to the mouth of the Bunsen or other gas burner.
Should the nature of the envelope or material be that of woven tissue, I may
introduce platinum wire into the said woven material, at suitable intervals, in
order to provide in part an indestructible support for the said envelope or
material.
If desired, I may construct the aforesaid mica cylinder in a series of pieces, and
I may attach the incandescent envelope by adhesion or other convenient form of
attachment to the interior of the said mica cylinder or pieces of mica, so as to
provide a support to the said fragile envelope or material by the aforesaid pieces
of mica.
Dated this 26th day of January 1886
FELL & WILDING,
Agents for the Applicant.

page_text: I CARL VON BUCH of 17 Cavendish Place in the County of Middlesex Chemist
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 (which is for the purpose of supporting caps or hoods such as
those for which Letters Patent have been granted to Carl Auer Von Welsbach,
No. 15,286 of 1885) relates to the better construction and support of the envelope or
material applied to the orifice of a Bunsen or other gas burner to be rendered
incandescent by the heat thereof, and is designed to better support the said
envelope or material, and to protect it from the destructive effect of accidental
blow or shake, so as to render it more durable in use.
My invention particularly relates to such incandescent materials or envelopes as
are in their nature essentially fragile. Envelopes of this sort are now well known
and extensively used. I combine with such fragile envelope or material a support
or supports of platinum wire, disposed in such a way as most readily to protect the
said envelope or material from accidental breakage, and at the same time to
provide a frame by which the said envelope or material may be attached over the
mouth of the said Bunsen or other gas burner.
Conveniently I may construct my support frame in a skeleton cylindrical form
so that the lower ring or projections therefrom will provide a convenient attach-
ment to the mouth of the Bunsen or other gas burner.
Should the nature of the envelope or material be that of woven tissue, I may
introduce platinum wire into the said woven material, at suitable intervals, in
order to provide in part an indestructible support for the said envelope or
material.
In order that my said invention may be fully understood and readily carried
into effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is an elevation showing the burner with the envelope and support.
Figures 2 and 3 show envelopes and supports differently arranged.
Figure 4 shows the burner and chimney and part of the support.
Figure 5 shows part of a skeleton support.
Figure 6 shows an envelope with longitudinal platinum wires forming a frame
fitting onto the top of the burner.
Figure 7 shows a glass chimney with envelope mounted within it.
Figure 8 shows a chimney and envelope with support in another form.
My wire support may be in the form of a ring of circular or other shape

page_text: extended for the purpose of shielding the incandescing material E from the
chimney as at C in Figures 2, 3 and 8. The wire support or supports are
threaded through or otherwise attached to, or combined with the incandescing
material. The ring or rings of wire of platinum, iridium, asbestos or other
refractory material may be formed in one or more separate pieces, the ends
being so twisted or joined together so as to be capable of attachment either
directly to the mouth of the said Bunsen or other gas burner G as shown in
Figures 1 and 6 or to a frame or support C of platinum or other material which
itself is attached to and supported by part of the said Bunsen or other gas burner G
as shown in Figures 2, 3, 4, 5 and 8.
It is found that a good attachment is formed by supporting the top of the
incandescent material E as shown in Figure 2.
The incandescent material may also be supported direct to the external envelope
or chimney by attaching the platinum wire through holes drilled therein as in
Figure 7 or in other similar manner.
The said frame may also serve to support an external envelope of mica or other
similar transparent refractory material such as glass when required to protect the
incandescent envelope or material from external draught or accidental touch and
to increase the temperature and steady the flame. The lower portion of the said
frame serves to support the weight of the said envelope and the upper portion
or prolongation serves to prevent the envelope from coming in contact with or
otherwise injuring the incandescent material.
If the aforesaid mica or glass envelope or cylinder is constructed in two pieces
and arranged so that there is a slight aperture between the two pieces on a level
or near the level of the top of the Bunsen burner, air will enter this aperture and
increase the temperature of the flame. It is evident that perforations can be made
in a solid cylinder or chimney to serve the same purpose. If only a single envelope
or chimney is used a better effect is obtained if the bottom of the chimney is on a
level with the top of the burner than if it is either below or above this level.
Conveniently I may construct my support frame in a skeleton cylindrical form
as shewn in Figure 4 so as to adapt itself to the support of the aforesaid external
cylinder of mica or glass letting the light pass through freely and allowing the gas
to be lit from below without fear of mechanical injury to the material, and at the
same time the lower ring R or projections therefrom Figure 5 will provide a
convenient attachment to the mouth of the Bunsen or other gas burner. This
may be effected by attaching one or more projections A. A. from the lower ring R
to a smaller ring B inside and concentric with the said lower ring, the smaller ring
being preferably in the form of a short tube or cap fitting closely on the mouth of
the Bunsen or other gas burner, the said smaller ring tube or cap thus serving to
protect the incandescent material from contact and injury by the burner when the
latter is removed.
A convenient method of attaching the support to the frame is by using a small
ring similar to the cap below the skeleton framework and attached to it by
projections as in Figure 4.
The holder can be attached to a metal ring L fixed to the bottom of the envelope
or chimney (Figure 8). The envelope or chimney together with the ring and
holder holding the incandescent material can then be taken away and a fresh one
put on, thus making an easy method of transporting the incandescent material
when fragile.
Should the nature of the envelope or material be that of woven tissue I may
introduce platinum wire into the said woven material, at suitable intervals, in
order to provide in part an indestructible support for the said envelope or material.
This may conveniently be done either as shown in Figure 6, where A¹ A' are
platinum wires disposed at intervals in a conical form within the envelope of
woven tissue or the platinum wire may itself be incorporated with strands of
cotton or other fibre forming a compound thread which is subsequently woven or
otherwise combined or used for the production of light by incandescence.

page_text: The incandescing material may be placed over the frame work and the whole
may be suspended or attached to the mouth piece of the burner.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:
1. In incandescing gas lights the combination of the fragile envelope or incan-
descing material with the supports substantially as described.
2. In incandescing gas lights the attachment of the supported incandescing
material to the mouth piece of the Bunsen or other gas burner substantially as
described.
3. In incandescing gas lights the interweaving of platinum wires in the
incandescing material for the object of strengthening or supporting the same.
4. In incandescing gas lights the addition to the incandescing envelope of a
thickening or hem at the top or bottom or other part in order to strengthen the
same.
5. In incandescing gas lights the use of platinum wire covered with cotton for
the purpose of strengthening or supporting the incandescing material and giving
light.
6. In incandescing gas lights the construction of the frame made in a skeleton
form to hold the support of the incandescent material for the purpose set forth.
7. In incandescing gas lights the combination with the incandescing material of
a ring or cap whereby the movement of the burner used when either accidentally
or purposely moved is prevented from damaging the incandescent material.
8. In incandescing gas lights the combination with the gas burner and the
incandescing material of a chimney to protect the incandescing material from the
destructive effect of draught or accidental blow divided into a series of pieces or a
solid chimney with perforations for the purposes set forth and arranged so that
air is allowed to enter at or near the top of the burner for the increase of the
temperature of the flame.
9. In incandescing gas lights the suspension and support of the incandescing
material by the insertion of platinum wire and the attachment of such platinum
wire to the mica or glass envelope or chimney through drilled holes or otherwise
substantially as described.
10. In incandecsing gas lights the extension of the support at the top in the
manner set forth for the purpose of preventing mechanical injury to the material
by the outer envelope.
Dated this 29th day of November 1886.

page_text: I, CARL VON BUCH of 17 Cavendish Place, in the County of Middlesex, Chemist,
do hereby declare the nature of this invention to be as follows :-
My invention relates to the better construction and support of the envelope or
material applied to the orifice of a Bunsen or other gas burner to be rendered
incandescent by the heat thereof, and is designed to better support the said
envelope or material, and to protect it from the destructive effect of draught or
accidental blow or shake, so as to render it more durable in use."
My invention particularly relates to such incandescent materials or envelopes as
are in their nature essentially fragile, and I combine with such fragile envelope or
material & support or supports of platinum wire, disposed in such a way as most
readily to protect the said envelope or material from accidental breakage, and at
the same time to provide a frame by which the said envelope or material may be
attached to the mouth of the said 'bunsen or other gas burner, and further t
support an external envelope of mica or other similar transparent refractory
material when required, to protect the incandescent envelope or material from
external draught or accidental touch.
.
'Conveniently I may construct my support frame in a skeleton cylindrical form,
so as to adapt itself to the support of the aforesaid external cylinder of mica, and
at the same time the lower ring, or projections therefrom, will provide a convenient
attachment to the mouth of the Bunsen or other gas burner.
Should the nature of the envelope or material be that of woven tissue, I may
introduce platinum wire into the said woven material, at, suitable intervals, in
order to provide in part an indestructible support for the said envelope or
material.
If desired, I may construct the aforesaid mica cylinder in a series of pieces, and
I may attach the incandescent envelope by adhesion or other convenient form of
attachment to the interior of the said mica cylinder or pieces of mica, so as to
provide a support to the said fragile envelope or material by the aforesaid pieces
of mica.
FELL & WILDING,
Agents for the Applicant,

page_text: itself is attached to and supported by part of the said Bunsen or other gas burner G
as shown in Figures; 2, 3, 4, 5 and 8.
It is found that a good attachment is formed by supporting the top of the
incandescent material E as shown in Figure 2.
The incandescent material may also be supported direct to the external envelope
or chimney by attaching the platinum wire through holes drilled therein as in
Figure 7 or in other similar manner.
The said frame may also serve to support an external envelope of mica or other.
similar transparent refractory material such as glass when required to protect the
incandescent envelope or material from external. draught or accidental touch and
to increase the temperature and steady the flame. The lower portion of the said
frame serves to support the weight of the said envelope and the upper portion
or prolongation serves to prevent the envelope from coming in contact with or.
otherwise. injuring the incandescent material.
If the aforesaid mica or glass envelope or cylinder is constructed in two pieces
and arranged so that there is a slight aperture between the two pieces on a level
or near the level of the top of the Bunsen burner, air will enter this aperture and
increase the temperature of the flame. It is evident that perforations can be made
in a solid cylinder or chimney to serve the same purpose. If only a single envelope
or chimney is used a better effect is obtained if the bottom of the chimney is on a
level with the top of the burner than if it is either below or above this level.
· Conveniently I may construct my support frame in a skeleton cylindrical form
as shown in Figure 4 so as to adapt itself to the support of the aforesaid external
cylinder of mica or glass letting the light pass through freely and allowing the gas
to be lit from below without fear of mechanical injury to the material, and at the
same time the lower ring R or projections therefrom Figure 5 will provide a
convenient attachment to the mouth of the Bunsen or other gas burner. This
may be effected by attaching one or more projections A. A. from the lower ring R
to a smaller ring B inside and concentric with the said lower ring, the smaller ring
being preferably in the form of a short tube or cap fitting closely on the mouth of
the Bunsen or other gas burner, the said smaller ring tube or cáp thus serving to
protect the incandescent material from contact and injury by the burner when the
latter is removed.
A convenient method of attaching the support to the frame is by using a small
ring similar to the cap below the skeleton framework and attached to it by
projections as in Figure 4.
The holder can be attached to a metal ring L fixed to the bottom of the envelope
or chimney (Figure 8). The envelope or chimney together with the ring and
holder holding the incandescent material can then be taken away and a fresh one
put on, thus making an easy method of transporting the incandescent material
when fragile.
Should the nature of the envelope or material be that of woven tissue I may
introduce platinum wire into the said woven material, at suitable intervals, in
order to provide in part an indestructible support for the said envelope or material.
This may conveniently be done either as shown in Figure 6, where A¹ A¹ are
platinum wires disposed at intervals in a conical form within the envelope of
woven tissue or the platinum wire may itself be incorporated with strands of
cotton or other fibre forming a compound thread which is subsequently woven or
otherwise combined or used for the production of light by incandescence.
The incandescing material may be placed over the frame work and the whole
may be suspended or attached to the mouth piece of the burner.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is :-
1. In incandescing gas lights the combination of the fragile envelope or incan-
descing material with the supports substantially as described.
.

page_text: .
2. In incandescing gas lights the, attachment of the supported incandesting
material to the mouth piece of the Bunsen or other gas burner substantially as
described.
3. In incandescing gas lights the interweaving of platinum wires in the
incandescing material for the object of strengthening or supporting the same.
4. In incandescing gas lights the addition to the incandescing envelope of a
thickening or hem at the top or bottom or other part in order to strengthen the
same.
1
5. In incandescing gas lights the use of platinum wire covered with cotton for
the purpose of strengthening or supporting the incandesoing material and giving
light.
8. In incandescing gas lights the construction of the frame made in a skeleton
form to hold the support of the incandescent material for the purpose set forth.
7. In incandescing gas lights the combination with the incandescing material of
a ring or cap whereby the movement of the burner used when either accidentally
or purposely moved is prevented from damaging the incandescent material.
8. In incandescing gas lights the combination with the gas burner and the
incandescing material of a chimney to protect the incandescing material from the
destructive effect of draught or accidental blow divided into a series of pieces or a
solid chimney with perforations for the purposes set forth and arranged so that
air is allowed to enter at or near the top of the burner for the increase of the
temperature of the flame.
•
9. In incandescing gas lights the suspension and support of the incandescing
material by the insertion of platinum wire and the attachment of such platinum
wire to the mica or glass envelope or chimney through drilled holes or otherwise
substantially as described.
10. In incandescing gas lights the extension of the support at the top in the
manner set forth for the purpose of preventing mechanical injury to the material
by the outer envelope.
.
Dated this 90th 1...
whan 1000
CARPMAEL & Co.,
Agents for the Applicant.