Year: 1886

page_text: Date of Application, 24th Sept., 1886.
Complete Left, 23rd June, 1887.
Complete Accepted, 26th July, 1887.
ROBERT POOLE, 71 Sycamore Road, Handworth W. Birmingham, Engineer. I do
hereby declare the nature of this invention to be as follows:-
I construct of Wrot. Iron a receiver or chamber of any form or shape so as to cover
sheets to be annealled. This receiver is provided with a recess or luting chamber,
around the Top, which is so arranged inside the said receiver or chamber, that the
A reverseable cover is
action of the Furnace does not burn away or destroy its effect.
provided, so as to fit loosely within the said luting chamber, which allows for expansion
and contraction of the same. I fill up the luting space with sand which makes the_
cover of the receiver air tight.
In my modification I may use a cover (receiver) of the above description except that
I provide the looting chamber outside the said cover or receiver.

page_text: I ROBERT POOLE of 71 Sycamore Road Handsworth near Birmingham 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
This invention relates to the construction and arrangement of boxes or receiving
chambers, which are used in connection with and for the process of annealing sheet
iron, or other metal, and of the covers for such boxes or receiving chambers, and more
particularly referring to such covers, and to the luting chamber or recess formed upon
such receiving chamber.
I construct of wrought iron, or any other suitable material, (such as cast iron, or in
some cases they may be made of clay &c.,) a box or receiving chamber, of a suitable
form or shape to cover or enclose sheet iron or other metal, or articles to be annealed.
Around the upper part of this receiving chamber I provide a luting chamber or recess,
which is so arranged, that the action of the fire in the furnace does not burn away its
parts, and consequently does not destroy its effects.
For this receiving chamber a cover is provided, which is made reversible, and also
to fit loosely within the luting chamber which thus allows for the expansion and
contraction of the same.
I fill up this luting chamber or space with any suitable material, preferably
with sand, which forms an airtight joint between the cover and the receiving
chamber.
In some instances instead of forming the luting chamber within the line or size of
the receiving chamber, I may construct and form it upon the outside of such receiving
chamber.
In order to more clearly describe and ascertain this my inventian, and to shew the
best method I know of carrying it into effect, I have attached hereunto an illustrative
sheet of drawings, upon which are figures and letters of reference, like letters
referring throughout to the same thing or part.
Fig. 1 is a side sectional elevation of a receiving chamber, with reversible cover
attached.
Fig. 2 is a complete end elevation of Fig. 1.
Fig. 3 is a complete plan of Fio. 1 without the reversible cover.

page_text: Fig. 4 is a plan of the reversible cover shewn in Figs. 1 & 2, apart from the receiving
chamber.
Fig. 5 is a side sectional elevation of a receiving chamber, with the reversible
cover attached, shewing the luting chamber upon the exterior of the said receiving
chamber.
Fig. 6 is a complete end elevation of Fig. 5, without the cover.
Fig. 7 is a complete plan of Fig. 5 without the reversible cover.
Fig. 8 is a plan of the reversible cover shewn in Figs. 5 & 6, apart from the
receiving chamber.
As illustrated, the arrangement is particularly applicable for annealing sheet iron,
the sheets to be annealed (not shewn) would be piled or placed upon a plate or trolley
(travelling).
α, is the box or receiving chamber which is passed over the sheets, enclosing the
same. At its upper part I provide a luting chamber b, to receive the rib edge c, of the
reversible cover d. As will be seen plenty of room is allowed in this luting chamber b,
for the convenience of the expansion and contraction of the cover and the box or
receiving chamber.
el, e², e³, et & es, are tie rods or bolts which serve to maintain the
correct line or position of the two sides of the box a, and preventing very much, if not
completely, the buckling of the said sides.
The cover I make with its top and bottom sides alike or similar, so that it may be
reversed when desired, for the following reason: When in use, the covers of annealing
boxes or chambers, when they have become heated, drop or bend down in the centre,
and by repeated use become so deformed, that they are unfit for use.
In this my
invention however I obviate this difficulty by making the said cover reversible, that is,
make its upper and lower sides alike, or, so similar, that when it has been once used,
and become deflected or bent to some extent, the next time it is used, it shall be put
on the box with the opposite or arched side uppermost, so that when again heated and
thereby gradually again fall, it shall again right itself in shape; thus by being changed
about in position each time it is used, its correct shape is maintained or nearly
so, which proves to be a great advantage not only in economy, but also in convenience
and usc.
With boxes or chambers and their covers constructed according to this my invention
the edges of the inner plates 1, Figs. 1 & 5, forming the luting chamber, being
entirely protected from the action of the flame, being inside, do not burn away;
while those edges of the plates at f, Figs. 1 & 5, although they may gradually burn
away still they may be readily repaired by rivetting thereto a strip along such
burnt edge, presenting thereby from time to time new metal to resist such burning
action.
The luting may consist of any suitable material, but preferably I use sand, as I find
in practice, it answers perfectly, and forms a good, sound joint between the cover d,
and the box a.
Instead of forming the luting chamber within the sides of the receiving chamber, I
may in some instances form or construct it upon the outside as shewn in Figs. 5,
6, & 7. This arrangement may be used with chambers having no bottom formed therein
(as shewn) but would be particularly convenient with chambers having a bottom, and
where the metal &c. to be annealed, has to be passed in from the top. The forming of
this luting chamber upon the outside thus very much improves such apparatus,
for convenience and also for durability, inasmuch as by reason of the flame of
the furnace striking downwards, the said luting chamber standing out beyond
the sides of the box, the direct damaging action of the flames is kept from the
said sides.
Upon the cover d, Figs. 1, 4, 5, & 8, at i a strengthening rib is provided, but often in
practice I find it better to place it longitudinally down the centre, instead of transversely
as shewn. I do not however bind myself to the number or manner of disposal of
such ribs.
Atj, handles are provided for lifting, turning or carrying &c., the boxes or covers in
thain

page_text: Having now particularly described and ascertained the nature of this my said
invention and in what manner the same is to be performed I declare that what I
claim is
1st. The improvements in the construction of lids or covers for annealing boxes or
receiving chambers substantially as herein described and illustrated that is to say,-the
making of such lids or covers reversible.
2nd. The improvements in the construction of annealing boxes or chambers, sub-
stantially as herein described and illustrated, that is to say, the forming of a luting
chamber upon the exterior of the annealing box or chamber, similarly as and for the
purposes specified.
CHARLES T. POWELL,
4, Cherry Street, Birminghain,
Applicant's Agent.