Improvements in "Tuyeres" for Smiths' Bellows and Portable Forges.
Year: 1889

page_text: Date of Application, 16th Aug., 1889
Complete Specification Left, 16th May, 1890-Accepted, 21st June, 1890
PROVISIONAL SPECIFICATION.
Improvements in "Tuyeres" for Smiths' Bellows and
Portable Forges.
I, JOHN GALLON, of 6 8, and 10 Heath Court, Manor Chare in the City and
County of Newcastle upon Tyne Engineer, Millwright and General Smith do hereby
declare the nature of this invention to be as follows:-
My invention relates to certain improvements in the tuyeres of smiths' bellows and
portable forges and is applicable to either dry or water tuyeres having for its
objects
:-
First. To obtain a more effective blast, spread over the cluster of rivets or other
article to be heated so as to avoid burning the material.
Second. Preventing the destruction by burning away of the upper part of the
tuyere nozzle.
Third. Saving of coal and labour to obtain the required heat.
Fourth. Preventing hot cinders getting down the blast pipe into the bellows.
In dry tuyeres according to my invention the mouth of the blast pipe is made
oval, where it joins the tuyere, and the hole in the back of the tuyere is also oval, for
a certain distance from the back, where it divides into two or more blast passages
(preferably two) which slope downward to the front of the nozzle, leaving extra
thickness of metal at the top, where it is required. The air thus issues from the
tuyere in two or more currents and is spread amongst the fuel so that the heat is
distributed, instead of being concentrated on one point tending to burn the article
being heated, and the necessary heat is much more quickly obtained with a saving of
coal and labour, as the fire is not broken up by moving the article about to obtain
uniform heating of all parts thus as in the case of a cluster of rivets, all are
uniformly heated by the spreading of the blast. The air passages sloping upward
from the point of the "nozzle" prevent hot cinders getting into the blast pipe and
thence into the bellows.
In water tuyeres the blast is divided and spreads in the same way but the passages
may open out on the centre line of the nozzle the water space being around
them.
In an alternative form two or more separate tuyeres may be used joining a branch
head on the blast pipe but I prefer the arrangement first described as the most
simple and economical in weight and cost.
J
1000
T. J. DANSON,
Per L. W.
COMPLETE SPECIFICATION.
☐ Improvements in "Tuyeres" for Smiths' Bellows and Portable
Forges.
I, JOHN GALLON of 6, 8 and 10 Heath Court, Manor Chare in the City and County
of Newcastle upon Tyne Engineer, Millwright and General Smith do hereby declare
the nature of this said 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 certain improvements in the "Tuyeres" of Smiths' Bellows
and Portable Forges, and is applicable to either dry or water "tuyeres." having for
its object:
To obtain a more effective biast, spread over the cluster of rivets or other article to
be heated so as to avoid burning the material.

page_text: Preventing the destruction by burning away of the upper part of the "tuyere
nozzle."
Saving of coal and labour to obtain the required heat.
Preventing hot cinders getting down the blast pipe into the bellows.
In my Provisional Specification I described the mouth of the blast pipe joining the
"tuyere," as also the hole in back of "turere," as being oval shaped for a certain
distance but I find that this oval formation will only be necessary when more than
2 blast passages are required, which will only be in special cases, the circular form being
preferable in ordinary cases the two blast passages branching from the main opening
and sloping downward to the front of the nozzle having extra thickness of metal at
the top where it is required. The air thus issues from the "tuyere" in two or more
currents and is spread amongst the fuel so that the heat is distributed instead of being
concentrated on one point, tending to burn the article being heated, and the necessary
heat is much more quickly obtained with a saving of fuel and labour as the fire is not
broken up by moving the article about to obtain uniform heating of all parts thus as
in the case of a cluster of rivets, all are uniformly heated by the spreading of the
blast. The air passage sloping upward from the point of the nozzle prevent hot
cinders getting into the blast pipe and thence into the bellows.
In water tuyeres" the blast is divided and spreads in the same way but the
passages may open out on the centre line of the nozzle the water space being around
them.
כל
In an alternative form two or more separate "tuyeres may be used, joining a
branch head on the blast pipe but I prefer the arrangement first described as the most
simple and economical in weight and cost.
DESCRIPTION OF DRAWINGS.
The drawing shews by 3 Figs. 1, 2 and 3 my invention as applied to the " 'tuyero"
of an ordinary portable forge with 2 blast passages A A branching from a cavity C
which receives the blast from the bellows by the blast pipe fitting into the cavity.
The blast passages incline downward from the cavity so as to leave more metal above
than below them in the nozzle N and also to prevent hot ashes from the hearth finding
their way down into the bellows.
66
In the case of water "tuyeres" the nozzle N will have around it an annular space
filled with water and the metal may be reduced in thickness. In some special
tuyeres "there may be 3, 4 or more blast passages and in such cases the cavity C
will be made of oval shape with the blast passages leading from it and the blast pipe
mouth may also be of oval shape or 2 blast pipes may be used where there are a
number of blast passages intended to spread the air over a considerable area of the
hearth.
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 I
claim is :-
The improvements in "tuyeres" for smiths bellows and portable forges consisting
in forming within the " tuyere two or more passages in the nozzle preferably sloping
downward from the blast pipe to the hearth with the objects of distributing the heat
of the fire, facilitating the heating of the article or articles and preventing hot ashes
getting into the bellows substantially as described and in part shewn.
Dated this 15th day of M... 1900
T. J. DANSON, F.I.P.A.,
Agent for Applicant.