Improvements in and relating to the Blast Pipes, Tuyeres, and Connections for Smiths' Fires, Furnaces, and the like.
Year: 1893

page_text: Date of Application, 24th Feb., 1893
Complete Specification Left, 7th Apr., 1893-Accepted, 8th July, 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Blast Pipes, Tuyeres, and
Connections for Smiths' Fires, Furnaces, and the like.
I WILLIAM CLARKE of the firm of Ibbotson Brothers and Company Limited
Globe Steel Works, Sheffield in the County of York, Engineer, do hereby declare
the nature of this invention to be as follows:-
'
It is found in practice, that, when it is desirable to do so, from various causes,
difficulty is experienced in the removal and replacement of tuyeres and their
connections. It may be found that removal is rendered necessary because of wear,
or that the connections have become choked with dirt etc. etc. and this invention is
designed not only to minimise the said difficulty and the risk of bursting through
the stoppage of water, but to introduce other improvements on the tuyeres at
present in use.
My invention relates more particularly to tuyeres which are used in connection
with smiths' fires, furnaces and the like.
According to my invention I construct a tuyere which is complete in itself and
apart from any other detail of the fire or furnace.
I preferably make my tuyere in the usual conical form with a water chamber
between the outside shell of the said tuyere and the inner shell which forms the
air channel or blast pipe.
One of the principal features of my invention is that the tuyere shall be so
designed that it may be easily removed and replaced at will, so that during such
removal and replacement no other detail or part of the fire or furnace or the like
need in any way he disturbed. To accomplish this object I make (as before stated)
my tuyere complete in itself by casting the said tuyero in one piece and by forming
on its exterior suitable lugs or flanges with bolt holes or other means provided
therein for attaching the same to the water bosh or tank. I furthermore construct
the said lugs or flanges in such a manner that the same shall have formed in or
through them a waterway communicating directly from the water bosh or tank to
the aforementioned water chamber of the said tuyere, and I may also form two or
more lugs or flanges on the exterior of my said tuyere so that the said tuyere may
be reversed when necessary and also that when required one or more of the said
lugs or flanges with their corresponding waterways may be used for flushing or
cleaning purposes, and it is obvious that I may if it be found necessary create a
greater circulation of water from the water bosh or tank, through the waterways
of the aforementioned lugs or flanges to the water chamber of the tuyere by means
of suitable syphon pipes or otherwise.
Should it be found convenient to have a variety of forms of blast I provide
means to accomplish this object by forming blast nozzle outlets of different forms
according to blast required.
My improved tuyere will be less costly than those now in use and by its easy
removal and equally easy replacement in case of wear, change of the aforementioned
different shapes of nozzles or for other requirements will as may be readily
perceived effect a considerable saving in labor and material besides being more
efficient, and by being enabled to keep a good supply of water in the said tuyere
the chances of bursting or burning are greatly decreased.
Dated this 23rd day of February 1893.

page_text: COMPLETE SPECIFICATION.
Improvements in and relating to the Blast Pipes, Tuyeres, and
Connections for Smiths' Fires, Furnaces, and the like.
I WILLIAM CLARKE of the firm of Ibbotson Brothers and Company Limited,
Globe Steel Works, Sheffield, in the County of York, Engineer 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 blast pipes, tnyeres and connections for smiths' fires and
the like, and comprises improvements which are advantageously applicable to any
and every class of smiths' fire furnace, or their equivalents, and my said invention
is intended to increase the efficiency of such blast pipes, tuyeres or connections.
I preferably make my improved tuyere of cast iron.
According to my invention I form the said tuyere or the like so that it may be
complete in itself and apart from any other detail of the fire or furnace and in such
a manner that it can be conveniently attached to the existing or special water
boshes or tanks and in case of need it can be easily detached and replaced without
disturbing any other of the connections of the said fire or furnace.
I preferably make my improved tuyere in the usual conical form, the central or
blast pipe A being surrounded by a water chamber B as is now in common practice.
To facilitate the removal of my improved tuyere I form on any convenient
position on the exterior of the same a lug or flange C, the said lug or flange C
being constructed in such a manner that it may form a water way D connected
directly with the aforementioned water chamber B and the water bosh or tank E.
I also preferably form in any convenient position on the aforementioned water bosh
or tank E a lug or flange F, somewhat similar to the aforesaid lug or flange Con
the tuyere and this lug or flange F is also provided with a water way G connecting
directly the interior of the water bosh or tank E and the water way D. I preferably
connect the lug or flange C to the lug or flange F by means of bolts H, H' in any
way which may according to circumstances be most convenient.
It will thus be seen that a direct communication is obtained from the interior of
the water bosh or tank E through the water ways G, D into the water chamber B
of my improved tuyere.
It is obvious that I may form the flanges and water way's on either side of the
tuyere of equal size and shape so that in case of need the said tuyere may be
reversed.
I further provide means for cleansing and removing foreign matter from my said
improved tuyere without disturbing the same or any other detail of the fire or
furnace by forming in any convenient position on the exterior of the said tuyere
an opening or water way I which can be readily opened or closed and made
watertight, preferably by means of a swing plate J connected in any convenient
manner to the flange K which is formed on the exterior of my aforesaid improved
tuyere.
If it should be found necessary to increase the circulation of the water from the
water chamber B to the interior of the bosh or tank E I may provide suitable syphon
pipes or other means to accomplish this object.
Another feature of my invention relates to the improvements in form of the
nozzles of tuyeres or blast pipes or their equivalents. may make the blast outlet
of any suitable form which according to requirements may be found most convenient,
but for this I make no claim.
Fig. 1. is a side elevation of my improved tuyere shewing one method of
connection with the water bosh or tank.
Fig. 2. is a section of my improved form of tuyere shewing the water chamber
and water ways connecting the said water chamber with the water bosh or tank.

page_text: Fig. 3. is an end elevation of my improved tuyere shewing one method of
securing the aforesaid tuyere to the water bosh or tank.
Figs. 4. 5. 6. 7. are front elevations of the nozzles of my improved tuyere,
shewing some of the most desirable shapes for blast outlets.
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:
First. A tuyere or blast pipe which is complete in itself and apart from any
other connection of the fire, furnace or their equivalent.
Second. A tuyere which may be easily removed and as readily replaced when
required either from the front or back of the fire or furnace.
Third. A tuyere which may be cleaned and foreign matter removed therefrom
without the removal of the said tuyere or any of its connections.
Dated this 10th day of March 1893.
WILLIAM CLARKE.