IMPROVEMENTS IN TEW IRONS FOR FORGES, HEARTHS, OR OTHER SIMILAR USES.
Year: 1872

page_text: LETTERS PATENT to William Wallace Bartle, of Birmingham, in the
"
County of Warwick, Mechanical Engineer, for the Invention of
"IMPROVEMENTS IN TEW IRONS FOR FORGES, HEARTHS, OR OTHER SIMILAR USES.'
- A communication from abroad by William Bartle, of Valencia,
1
PROVISIONAL SPECIFICATION left by the said William Wallace Bartle
at the Office of the Commissioners of Patents, with his Petition,
on the 13th July 1872.
I, WILLIAM WALLACE BARTLE, of Birmingham, in the County of
Warwick, Mechanical Engineer, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN TEW IRONS FOR FORGES, HEARTHS, OR
OTHER SIMILAR USES," to be as follows, that is to say :-
This Invention relates to "tew irons" used for conducting the air from
bellows, air passages, or ventilators to forges, hearths, or other similar
apparatus.

page_text: The improvements consist in forming an oblong or other suitably
shaped metal box, its size being regulated by the forge or other apparatus
to which it is to be applied. The air is supplied by bellows or other
means through an opening on one side of the box, the lower part of the
box constituting an air chamber. The combustible matter is placed in
the centre of the upper part of the box, where there is an opening or
openings serving as the air escape, the supply of air being regulated by
a valve and handle. In the bottom of the box is a draw plate ready to
allow of the cleansing of the air chamber or interior of the box from
cinders or slag, the upper part of which may be made as a lid or cover
fitting upon the body of the box; so that when worn out it will be easily
replaced by a new lid without removing the bottom of the box.
By the arrangement described the supply of air to the forge, or hearth,
or other apparatus can be graduated to the size or bulk of metal under
operation, and such air already warmed and rising in a vertical direction
from the fuel will not chill the metal and will be equally distributed,
whilst the work turned out will be cleaner and executed in less time
than by the ordinary method.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Wallace Bartle in the Great Seal Patent
Office on the 11th January 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
WALLACE BARTLE, of Birmingham, in the County of Warwick,
Mechanical Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of July, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Wallace Bartle, Her special license
that I, the said William Wallace Bartle, my executors, administrators,
and assigns, or such others as I, the said William Wallace Bartle, my
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise,

page_text: and vend, within the United Kingdom. of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS
IN TEW IRONS FOR FORGES, HEARTHS, OR OTHER SIMILAR USES," being a com-
munication to him from abroad by William Bartle, of Valencia, in the
Kingdom of Spain, Mechanical Engineer, upon the condition (amongst
others) that I, the said William Wallace Bartle, my executors
or administrators, by an instrument in writing under my, or their,
or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same to be filed in the Great Seal
Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Wallace. Bartle, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement, that is to say :-
This Invention relates to tew irons used for conducting the air from
bellows, air passages, or ventilators, to forges, hearths, or other similar
apparatus.
The improvements consist in forming an oblong or other suitably
shaped metal box, its size being regulated by the forge or other apparatus
to which it is to be applied. The air is supplied by bellows or other
suitable means through an opening on one side of the box, the box
constituting a reservoir or air chamber. The combustible matter is
placed on the top of the box, where there is an opening or openings.
serving as the air escapé to the fire, the air supply being regulated by a
valve and handle. In the bottom. of the box is a draw plate ready to
allow of the cleansing of the air chamber or interior of the box from
cinders or slag. The upper part of the box is made as a lid or cover
fitting upon the body of the box, so that when such lid or cover becomes
worn it may easily be replaced by a new one, without the removal of the
bottom part or body of the box.
By the arrangement described the supply of air to the forge, hearth,
or other like apparatus can be graduated to the size or bulk of metal
under operation, and such air already warmed and rising in a vertical
direction from the fuel or fire will not chill the metal and will be equally

page_text: distributed, whilst the work turned out will be cleaner and executed in
less time than by the ordinary method.
I will now describe the improved apparatus more particularly in detail
by aid of the annexed Drawings, reference being had to the letters and
figures marked thereupon.
Figure 1 is a longitudinal, and Figure 2 a transverse section of the
improved tew iron used for conducting air to forges, hearths, or other
similar apparatus.
(a) is an oblong or other suitably shaped metal box, its size being
regulated by the description of forge or apparatus'to which it is applied,
the air being supplied by bellows or other convenient means through an
opening or nozzle (6), Figure 2, the box (a) thus constituting an air
reservoir or chamber. The combustible matter, fuel, or fire is placed
on the top of the box, in which is an opening (c) or more than one
opening if required, such opening or openings (c) serving as the air
escape to the combustible matter or fire above, the air supply being
regulated by a valve or slide (d) attached to a longitudinal (rod (e) worked
by any suitable handle, not shewn. In the bottom of the box (a) is a
draw plate (f) fitted as a slide, and worked by means of a rod (9) with
any suitable handle attached thereto; this slide is for the purpose of
cleansing the air chamber or interior of the box (a) from cinders or slag
when necessary. The upper part (a³) of the box is made by preference
as a lid or cover, suitably secured to the body of the box (a), so that
when such upper part (a¹) becomes worn it may readily be replaced by
a new one without removing the bottom part or body of the box.
It will be readily understood that by the construction of tew irons as
described the supply of air to the forge, hearth, or other like apparatus,
can be regulated to the size or bulk of metal under operation through
the air escape opening (c) by means of the valve or slide (d), and the air
passing through the combustible matter or fire will become warmed, and
rising in a vertical direction the metal will not be chilled, whilst the
work done will be cleaner and executed in less time than by the ordinary
method.

page_text: confining myself to these precise details, the several improvements in
tew irons for forges, hearths, or other similar uses, substantially in
manner as herein more fully set forth and specified.
In witness whereof, I, the said William Wallace Bartle, have here-
' unto set my hand and seal, this Tenth day of January, in
the year of our Lord One thousand eight hundred and seventy-
three
WILLIAM WALLACE BARTLE. (L.S.).