Year: 1888

page_text: Date of Application, 21st July, 1888
Complete Specification Left, 18th Aug., 1888
Complete Specification Accepted, 5th Oct., 1888
I, FRANCIS THOMAS STATHAM, of No. 68 Monk Street, Derby, Engineer do
hereby declare the nature of this invention to be as follows:-
My invention has for its object to construct Smiths' hearths and portable forges
in such a manner as to ensure great strength and rigidity with the minimum of
weight, at the same time with a view to ensure that the cost of construction shall be
comparatively small.
In order that my invention may be the better understood I have appended the
accompanying two sheets of drawings, in which Figure 1. is a side elevational view of
a Smith's hearth or forge built or made up according to my invention; Figure 2 is
a sectional elevation of the same drawn on line A, B, Figure 1. showing the position
of the tuyere or tue-iron. Figure 3 is a side elevational view of a portable forge
Figure 5,
according to my invention. Figure 4, is a front elevation of the same.
represents a plan of the hearth-plate of a smith's forge, showing the tuyere or tueiron
and cistern in section. Figure 6 is a plan of the top of the hood; Figure 7 is a
side sectional elevation of the hearth plate of a portable forge showing tuyere or
tue-iron connected to the blower, and Figure 8 is a view of one of the handles used
with the portable forges according to my invention.
In carrying out my invention I cast the hearth and ash pan A in one piece, ribbed
on the under side as at a Figure 2 to ensure strength and rigidity, and provided with
a web bcast thereon. Said hearth is bolted or otherwise secured to a back plate B
either plain or ribbed or corrugated for imparting strength and rigidity thereto, and
Two cast iron or steel
provided with flanges upon the vertical edges thereof.
brackets C are secured to the top of the back plate B to serve as supports for the
hood or bonnet D which latter rests upon, and is secured by bolts or equivalents to
Banges c formed upon said brackets C, as also to a flange d formed upon the top of
the back plate B aforesaid.
The frame of the hood D is composed of wrought or cast malleable iron or steel,
(preferably the latter) angle irons E, E¹, E", one of which E is fixed upon the flange d

page_text: on the top of the back plate B, by bolts, rivets or the like, the other two E', E",
being secured to the flanges c c of the brackets C. At the front ends of the angle
irons E, E are formed pockets in which take, and rest the ends of a flat bar e¹¹.
Four plates, sheared and punched, of sheet iron or steel, cut to the desired shape are
placed in position and rest upon a bead formed upon the exterior of said angle
irons E EE", by which means all strain is taken off the rivets. The four edges of
the plates, above referred to, forming the hood, are punched with a seam of holes, and
strips of thin angle iron laid and rivitted or bolted thereon.
The ring F which forms the top of the hood D is preferably cast in malleable iron
or steel, (the rivet or bolt holes being formed during the process of casting,) and has
an angular flange e and bead el formed on the lower edge thereof, against which rest
the upper edges of the above referred to plates, and to which they are rivitted, bolted
or otherwise secured.
A hood built up or constructed in the manner above described, in addition to being
extremely light, possesses great strength, and, on account of the simplicity of its
construction, can be produced at a very small cost, relatively to that of the mode of
construction usually adopted. An additional advantage in the adoption of such a hood
as herein referred to, is, that it is not so liable to crack and be broken as when cast in
one piece as at present.
The Tue-iron or Tuyere G which is formed in two parts (the cylinder and nozzle),
is of cast or wrought malleable iron or steel, and has a flange f cast upon the larger
end thereof, The nose-piece or nozzle H of the tuyere G is of cast malleable iron or
steel, and is provided with a narrow flange g cast thereon, the inner surface of which
has a circular recess h formed therein, in which takes the narrow end of the
cylinder G, a tight joint being effected by the employment of Asbestos or other
suitable packing.
The bore of the nose-piece or nozzle H is provided with a female screw thread, into
which is screwed one end of a wrought iron or steel pipe I, a cast or wrought
malleable iron or steel flange i being formed upon the other end thereof, by means of
which it may be bolted or otherwise secured to the flange j of the blast pipe J, which
latter may be carried through and secured to the back or other part of the cistern K.
Thus, upon removing the bolts from the flanges i j the tuyere G and pipe I may be
withdrawn through a hole formed in the back plate B, for the purpose of effecting
repairs when necessary, or, if the nose-piece His burnt, and requires renewal, a new.
one can be fitted by simply removing the damaged nozzle by unscrewing, and
screwing on the new one. If desired, the nose-piece H and cylinder G may
be cast in one piece, the pipe I being screwed into the nozzle H in the manner above
described.
It will be obvious therefore that all repairs to or renewal of the tuyere G can be
effected from the front without disturbing any other part of the structure, a very
important feature when it is remembered that, in order to economise space, Smiths'
forges are invariably built in or close to the walls of the shop, and, inasmuch as
according to existing arrangements, the tuyere or tue-iron is inserted from the back,
the structure or a portion thereof must be removed at a considerable cost of time and
money to enable this to be done.
In the application of my invention to portable forges, I form the frame of two
standards L preferably of H section, to which is bolted or otherwise secured the
hearth plate M. The hood or bonnet N which is of similar construction to that
above described for large Smiths' forges, is secured to the standards L aforesaid. The
tuyere or tue-iron O Figure 7 has a flange k formed at the rear end thereof, by means
of which it is bolted or otherwise secured to the back m of the ash-pan l. The tuyere
or tue-iron O can be removed and renewed by simply unscrewing the bolts, by which
it is secured to the back plate m of the ashpan 1. To the rear of said plate m of
the ashpan is also secured a flanged bent tube n into which takes a screwed wrought iron
pipe o connected with a blower P. Said blower P rests upon, and is supported by
a blower plate Q Figure 3 preferably of T section, which is secured in any
suitable manner to the standards L aforesaid. To the blower plate Q are secured

page_text: two radial standards R forming an angle, and extending upwards to the hearth
plate M to which they are bolted. Said standards R are provided with suitable
bearings in which take the ends of a spindle or axle p, upon which is mounted a
wheel to allow of the easy removal of the portable forge. If desired two wheels
may be mounted upon the same axle, but in practice one wheel is found to be
sufficient for the purpose. On each side of the frame of the hearth plate M is
mounted a handle S, (shown more particularly at Figure 8) capable of moving
horizontally to and fro in suitable guides, a pin s being provided to fix said
handles S in position when withdrawn a limited distance for the purpose of facilitating
the moving of the portable forge from one locality to another.
A portable forge produced in the manner above described is both light and
strong, and has the additional advantage of being readily taken to pieces, and
packed in a small compass for transport, and may be put together again with equal
facility.
Dated this Ninataanth day of Inl, 1000
JAMES
STEVENSON,
Gray's Inn Chambers,
20, High Holborn, London, W.C.,
Agent for Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements relating to Smiths' Hearths and Portable Forges.
I, FRANCIS THOMAS STATHAM, of No. 68 Monk Street, Derby, 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, reference being also had to the drawings accompanying my Provisional
Specification :-
:-
My invention has for its object to construct Smiths' hearths and portable forges in
such a manner as to ensure great strength and rigidity with the minimum of weight,
at the same time with a view to ensure that the cost of construction shall be
comparatively small.
In carrying out my invention I cast the hearth and ash pan A in one piece, ribbed
on the under sido as at a Figure 2 to ensure strength and rigidity, and provided with
a web b cast thereon. Said hearth is bolted or otherwise secured to a back plate B
either plain or ribbed or corrugated for imparting strength and rigidity thereto, and
provided with flanges upon the vertical edges thereof. Two cast iron or steel
brackets C are secured to the top of the back plate B to serve as supports for the
hood or bonnet D, which latter rests upon, and is secured by bolts or equivalents to
flanges e formed upon said brackets C, as also to a flange d formed upon the top of
the back plate B. aforesaid.
The frame of the hood D is composed of wrought or cast malleable iron or steel,
(preferably the latter) angle irons E, E', E" one of which E is fixed upon the flange d
on the top of the back plate B by bolts, rivets or the like, the other two E¹, E", being
At the front ends of the angle
secured to the flanges c c of the brackets C.
irons E E are formed pockets in which take, and rest the ends of a flat bar ell.
Four plates, sheared and punched, of sheet iron or steel, cut to the desired shape are
placed in position and rest upon a bead formed upon the exterior of said angle
irons E. E¹, E", by which means all strain is taken off the rivets. The four edges of
the plates above referred to, forming the hood, are punched with a seam of holes, and
strips of thin angle iron laid and rivetted or bolted thereon.
The ring F which forms the top of the hood D is preferably cast in malleable iron
or steel, (the rivet or bolt holes being formed during the process of casting,) and has
an angular flange e and bead e¹ formed on the lower edge thereof, against which rest
the upper edges of the above referred to plates, and to which they are rivetted, bolted
or otherwise secured.
A. hood built up or constructed in the manner above described, in addition to being
extremely light, possesses great strength, and on account of the simplicity of its
construction, can be produced at a very small cost relatively to that of the mode of
construction usually adopted. An additional advantage in the adoption of such a hood
as herein referred to, is, that it is not so liable to crack and be broken as when cast in
one piece as at present.

page_text: The Tue-iron or Tuyere G which is formed in two parts (the cylinder and nozzle),
is of cast or wrought malleable iron or steel, and has a flange cast upon the larger
end thereof. The nose piece or nozzle H of the tuyere G is of cast malleable iron or
steel, and is provided with a narrow flange g cast thereon, the inner surface of which
has a circular recess formed therein, in which takes the narrow end of the
cylinder G, a tight joint being effected by the employment of Asbestos or other
suitable packing.
The bore of the nose-piece or nozzle H is provided with a female screw thread, into
which is screwed one end of a wrought iron or steel pipe I, a cast or wrought
malleable iron or steel flange i being formed upon the other end thereof, by means of
which it may be bolted or otherwise secured to the flange j of the blast pipe J, which
latter may be carried through and secured to the back or other part of the cistern K.
Thus, upon removing the bolts from the flanges i, j, the tuyere G and pipe I may be
withdrawn through a hole formed in the back plate B for the purpose of effecting
repairs when necessary, or, if the nose-piece H is burnt, and requires renewal, a new
one can he fitted by simply removing the damaged nozzle by unscrewing, and screwing
on the new one. If desired, the nose-piece H and cylinder G may be cast in one
piece, the pipe I being screwed into the nozzle H in the manner above described.
It will be obvious therefore that all repairs to or renewal of the tuyere G can be
effected from the front without disturbing any other part of the structure, a very
important feature when it is remembered that, in order to economise space, Smiths'
forges are invariably built in or close to the walls of the shop, and, inasmuch. as
according to existing arrangements, the tuyere or tue-iron is inserted from the back,
the structure or a portion thereof must be removed at a considerable cost of time and
money to enable this to be done.
In the application of my invention to portable forges, I form the frame of two
standards L preferably of H section, to which is bolted or otherwise secured the
hearth plato M. The hood or bonnet N which is of similar construction to that above
described for large Smiths' forges, is secured to the standards L aforesaid. The
tuyere or tue-iron O Figure 7 has a flange k formed at the rear end thereof, by means
of which it is bolted or otherwise secured to the back m of the ash-pan l. The tuyere
or tue-iron O can be removed and renewed by simply unscrewing the bolts by which
it is secured to the back plate m of the ash-pan l. To the rear of said plate m of the
ash-pan is also secured a flanged bent tube n into which takes a scrowed wrought iron
pipe o connected with a blower P. Said blower P rests upon, and is supported by a
blower plate Q Figure 3 preferably of T section, which is secured in any suitable
manner to the standards L aforesaid. To the blower plate Q are secured two radial
standards R forming an angle, and extending upwards to the hearth plate M to which
they are bolted. Said standards R are provided with suitable bearings in which take
the ends of a spindle or axle p, upon which is mounted a wheel q to allow of the easy
removal of the portable forge. If desired two wheels may be mounted upon the same
axle, but in practice one wheel is found to be sufficient for the purpose. On each side
of the frame of the hearth plate M, is mounted a handle S (shown more particularly
at Figure 8) capable of moving horizontally to and fro in suitable guides, a pin s
being provided to fix said handles S in position when withdrawn a limited distance for
the purpose of facilitating the moving of the portable forge from one locality to
another.
A portable forge produced in the manner above described is both light and strong,
and has the additional advantage of being readily taken to pieces, and packed in a
small compass for transport, and may be put together again with equal facility.
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: The improved Smiths' hearths and portable forges constructed and built up
substantially as herein described and illustrated in the drawings accompanying my
Provisional Specification

page_text: Second In combination with Smiths' hearths and portable forges the employment
therewith and adaptation thereto of a tuyere or tue-iron formed in two parts substantially
as herein described and shown.
Third: The mode of and means employed for fitting the tuyero or tue-iron from
the front of the forge substantially as and for the purpose herein set forth.
Dated this Seventeenth day of August 1888
JAMES STEVENSON,
Gray's Inn Chambers,
20, High Holborn, London, W.C.,
Agent for Applicant.
JAMES STEVENSON,
Gray's Inn Chambers,
20, High Holborn, London, W.C.,
Agent for Applicant.