Improvements in and in the Manufacture of Ovens for Cooking Ranges and Stoves.
Year: 1893

page_text: Date of Application, 10th Feb., 1893
Complete Specification Left, 9th Nov., 1893—Accepted, 30th Dec., 1893
PROVISIONAL SPECIFICATION.
Improvements in and in the Manufacture of Ovens for Cooking
Ranges and Stoves.
I, HOWARD MATRAVERS ASHLEY, of Ferrybridge, in the County of York,
Engineer and Ironfounder, do hereby declare the nature of this invention to be as
follows:-
In the Specification of my Patent No. 3248, I described an oven, with a
corrugated bottom, the front and back plates of which had long bolts passed
through them, and also through the inside corners of the corrugated body, by which
means the three parts are held together, and as each part is cast loose, instead of
two or more being cast in one, expansion and contraction are so provided for that.
the oven is practically unbreakable with firing, besides being otherwise an improve-
ment upon such as are made on the old plan. And my present invention is an
improvement upon the one referred to, not only in the manner of putting the oven
together, but also in the means by which it is made, and in other respects.
According to my present invention, I use short bolts instead of long ones, and
preferably eight of them instead of four, being four to hold the front to the body,
and four to hold the back to the body, these bolts being turned under the heads
into a convex shape, holes being provided in the front and back plates corresponding
to these, and therefore concave. I then provide lugs, preferably split ones, in the
eight corners of the body of the oven, behind which the nuts can be put upon the
bolts described. It will be seen from this description that the face of the nuts
being also convex, like the under side of the heads of the bolts, and the holes
through which the bolts pass being thoroughfare, expansion and contraction are
better provided for, and at a less cost, than in my previous invention.
But it will be readily seen that to get the lugs cast in the corners of the body,
I must mould the body in a different way to that hitherto adopted. I therefore
provide slots in the corners of the four plates that form the pattern from which the
oven is made, just the right size to receive the lug mould through them. I then
provide a casting box with all the four sides and bottom hinged in such a manner
that when the sand core is rammed up for the inside of the oven, and the four side
plates standing round it, I unclasp the four side box-parts, and lay them down on
the floor. I then drive the lug mould through each of the slots successively into
the sand core, then take away the sides of the pattern, close the four sides of the
box, put the top box on, and cast the oven.
Dated this 9th day of February 1893
H. M. ASHLEY.
COMPLETE SPECIFICATION.
Improvements in and in the Manufacture of Ovens for Cooking
Ranges and Stoves.
I, HOWARD MATRAVERS ASHLEY of Ferrybridge in the County of York,
Engineer and Ironfounder, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
In the Specification of my Patent No. 3242, I described an oven, with a corru-
gated bottom, the front and back plates of which bad long bolts passed through
them and also through the inside corners of the corrugated body, by which means
the three parts are held together, and as each part is cast loose, instead of two or.
Price 8d 1

page_text: more being cast in one, expansion and contraction are so provided for that the oven
is practically unbreakable with firing, besides being otherwise an improvement upon
such as are made on the old plan. And my present invention is an improvement
upon the one referred to, not only in the manner of putting the oven together, but
also in the, means by which it is made and in other respects.
According to my present invention I use short bolts instead of long ones and
preferably eight of them instead of four, being four to hold the front to the body,
and four to hold the back to the body, these bolts being turned under the heads
into a convex shape, holes being provided in the front and back plates corresponding
to these and therefore concave. I then provide lugs, preferably split ones in the
eight corners of the body of the oven, behind which the nuts can be put upon the
bolts described. It will be seen from this description that the face of the nuts being
also convex, like the under side of the heads of the bolts, and the holes through which
the bolts pass being thoroughfare, expansion and contraction are better provided for,
and at a less cost, than in my previous invention.
But it will be readily seen that to get the lugs cast in the corners of the body,
I must mould the body in a different way to that hitherto adopted. I therefore
provide slots in the corners of the four plates that form the pattern from which the
oven is made, just the right size to receive the lug mould through them. I then
provide a casting box with all the four sides and bottom hinged in such a manner
that when the sand core is rammed up for the inside of the oven, and the four side
plates standing round it, I unclasp the four side box-parts, and lay them down on
the floor. I then drive the lug mould through each of the slots successively into
the sand core, then take away the sides of the pattern, close the four sides of the
box put the top box on, and cast the oven.
Fig. 1 is a plan of the box made in six parts for moulding the oven, the top part
being supposed removed; a a a a are the four sides of the box, part of the bottom
appearing at n between arms of the git mould c.
Fig. 2 is a side view of the oven pattern in position.
The four side parts a are perforated for the purpose of venting the sand, for escape
of gas when casting the oven. Two of the side parts have prongs d with slots
through them for cottering; the other parts have corresponding slot holes e to
receive the prongs d when the sides are turned up to a vertical position on hinges g
by which the sides are connected to the bottom part of the box. Each of those
hinges is preferably open at one side so as to be a hook, so that the sides when in a
horizontal position can be detached from the bottom.
The pattern for the oven to be made consists of four parts marked b, a corrugated
part which is the bottom, two straight sides and an arched top.
These parts are jointed at the four corners, and are steadied in position by pins f
at their bottom edges which fit into holes in the bottom part n of the box.
cis the git pattern which is connected by dovetails to the four parts 6 holding
their tops steady.
The four sides of the casting box have projecting flanges o, o, which hold the sand
together when the sides are lowered to the horizontal position.
h indicates lugs which are loose in the moulds, but have to be cast fast to the
oven; four of these are for the front corners, and four for the back corners.
The holes in the lugs for the front of the oven are made taper and are bored to
give a partly spherical seating for the bolts and nuts as shewn in Fig. V, so that
the parts of the oven can move a little as they expand and contract without straining
the bolts and lugs which they fasten together.
As shewn in Fig. V h indicates the front or back of the oven and m the lug in
either; the workman can put his hand inside the oven behind the lug, and put the
nut on the bolt which is put through the front and the lug of the oven body
outside.
The four lugs for the back of the oven are made on what is understood as the
split lug plan, the section being similar to the four lugs already described, but the
pattern of the lug itself being split so as to draw out from the sand through

page_text: the corners of the oven mould a corresponding amount to the size of the split lug
being filed out of the oven patterns at the corners, to allow the split lug to draw
through them after the sand is rammed up, and the oven sides are taken away.
The moulding of the oven is then conducted as follows:-
The bottom part n of the moulding box is laid down; the four sides bb bb of
the pattern are then placed in position, the git mould c is then laid on the top of
the oven pattern and connected to it by the dovetails.
The four sides a of the moulding box are then turned up and cottered. The
moulding sand is then rammed around the outside of the oven pattern. The git
mould c is then lifted off, and the inside of the pattern is rammed with sand; and
after strickling off level with the top edge of the pattern the git mould is again put
in position as before, and an ordinary top moulding box is put on.
After this top box is rammed up, with the hole through it for running the metal,
it is taken away. The operator pushes a sharp spike through the perforations in
the sides of the box so as to give freedom for escape of gas through the sand.
The four sides of the box a aa a are then lowered again. The moulder then
takes the top lug pattern shewn in perspective in Fig. III and in section in
Fig. IV, and holding it by the part he slides it down the corner of the oven
pattern while tapping it with a mallet until it makes the necessary impression in
the sand for the lugs h.
He then removes the git pattern c, unlocks the four sides of the oven mould
pattern, lifts the oven pattern out of position, draws from the buttom corners the
four back lugs which leave their impression in the sand, then raises and cotters the
four sides of the box, then, after placing the top part of the box in position, he
runs the metal through the hole.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. An oven having one or more sides corrugated, as described in my Specification
No. 324 of 1882, but with four lugs in the front corners and four lugs in the back
corners secured by bolts and nuts spherically seated so as to work freely as ball
joints, thus dispensing with long bolts through the oven with compensating spring
washers and nuts as described in my previous Specification above referred to.
2. A moulding box for casting the oven constructed substantially as described.
3. The herein described method of moulding the ovens in a box such as is above
referred to.
Dated this 9th day of November 1893
ABEL & IMRAY,
Agents for the Applicant.