Improvements in or connected with Draw-plate or other Ovens.
Year: 1896

page_text: Date of Application, 10th Mar., 1896
Complete Specification Left, 12th June, 1896-Accepted, 24th Dec., 1896
PROVISIONAL SPECIFICATION.
Improvements in or connected with Draw-plate or other Ovens.
We, JAMES HORTON, of Sankey Street, Warrington, in the County of
Lancaster, Baker, and WILLIAM PRICE, of Montague Road, Smethwick, in the
County of Staffordshire, Baker, do hereby declare the nature of this invention to
be as follows:-
This invention is designed to improve the construction of what are known as
draw plate ovens to facilitate and lessen the expense of erection and to render the
oven more easily worked.
The draw-plate we construct with two wheels or runners at the back traversing
the rails set in the oven and at the front we place a pair of wheels or rollers over
which the front part of the plate moves.
In front of the oven we dispense with all projecting rails or fixed supports for
the draw-plate when drawn out of the oven and we provide a movable trolly of
suitable shape and construction upon which the front edge of the draw-plate rests
and which travels along with the plate as it is moved forward. Two clips are
placed on the bottom of the plate to engage with the trolly when drawn out. To
the trolly we fix a rail or bar across the top above the draw-plate or in any other
suitable position by which the trolly can be moved to and fro and the plate with it
without taking hold of the hot plate. When pushed in it allows draw-plate to
glide into the oven. The trolly is detachable or capable of being moved from one
oven to another so that for a range of two or more ovens one trolly will suffice,
leaving the front of the other ovens clear and unimpeded.
To the back of the draw-plate we attach a trough to contain or be filled with
water. This trough is filled each time the draw-plate is drawn out or the oven is
filled with bread and when in the oven the water is transformed into steam filling
the oven and protecting the bread from burning. This method of raising steam
prevents the drying of the bread and is superior to anything hitherto adopted.
The back of the draw-plate being at the hottest part of the oven the rising of the
steam protects the bread that is at the back of the plate. Although we prefer to
attach the trough to the draw-plate the trough may be fixed in the back of the
oven and be filled by means of a pipe passing into the oven from the outside. The
trough is emptied when no bread is being baked. The trough may if desired be
fitted with a ball tap or other device whereby the water therein may be kept at a
constant level.
Below the ends of one or more of the rows of water tubes which extend into the
flue we place a fire brick or tile to prevent the flame impinging upon the ends of
the tubes and under the top set of tubes, or in other convenient place we build
three or four feet of brickwork to scatter or deflect the heat to the sides of the
flue near the top instead of allowing it to concentrate upon the central tubes, thus
securing that all tubes should receive an equal amount of heat.
Above the draw-plate ovens we construct a "Peel" oven worked from floor
level thus dispensing with either stage or well in which confectionery and similar
articles may be baked. This oven obtains part of its heat through the floor from
the other oven below. A trough to contain water may be set at the side or back.
Dated this 9th day of March 1896.

page_text: COMPLETE SPECIFICATION.
Improvements in or connected with Draw-plate or other Ovens.
We, JAMES HORTON, of Sankey Street, Warrington, in the County of
Lancaster, Baker, and WILLIAM PRICE, of Montague Road, Smethwick, in the
County of Staffordshire, Baker, 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 is designed to improve the construction of what are known as
draw-plate ovens to facilitate and lessen the expense of erection and to render the
oven more casily worked.
It will be fully described with reference t the accompanying drawings in which
as an example a double set of ovens is illustrated.
Fig. 1. Front elevation partly in section.
Fig. 2. Longitudinal section.
Fig. 3. Elevation from back partly in section.
The oven A is constructed or built of any convenient shape or size and is heated
by the water tubes B the ends of which project over the furnace C in the
ordinary way.
We construct the draw-plate D with two wheels or runners d at the back which
are supported by and traverse the rails E set in the oven as the plate is drawn out.
At the front of the oven A we place a pair of wheels or rollers F mounted in fixed
bearings which support the front end of the draw-plate D and over which the
draw-plate slides as it is moved in or out. Guide rollers G are placed at the sides
to prevent any lateral movement of the draw-plate.
To support the front end of the draw-plate D when it is drawn out of the oven
we dispense with all projecting rails or fixed supports in front of the oven such as
have hitherto been employed and we provide a movable trolly H constructed with
wheels and an upright frame work h' upon which the front edge of the draw-
plate D rests and which travels along with the draw-plate as it is moved in or out.
Two clips d' are affixed to the bottom side of the plate D to engage with the
projecting arms or studs of the trolly H upon which the elge of the plate
rests. The trolly is also provided with a catch ' which engages with the plate
so that the two will be connected and move together. Across the top of the
trolly H we fix a rail or bar above the draw-plate D or in any other suitable
position by which the trolly can be moved to and fro and the plate with it without
taking hold of the hot plate. The trolly H runs to and fro on rails K preferably
placed below the floor level and is capable of being moved from one oven to
another so that for a range of two or more ovens one trolly will suffice, leaving
the front of the other ovens clear and unimpeded.
The draw-plate D at the back edge is provided with an upright flange L which
when the draw-plate is drawn out comes into contact with or nearly into contact
with the front flange or plate M and so closes and prevents the cooling of the oven
when the baked bread is being removed and a fresh batch is being placed on the
draw-plate.
In the back of the oven we place a trough N to contain or be filled with water
which when the oven is hot is transformed into steam thereby protecting the bread
especially that at the back of the oven, from being burnt. This also provides a
supply of hot water for baking and other purposes. We at present prefer to
build the trough N into the back wall of the oven as shown in Fig. 1 with a feed
pipen projecting to the outside. The trough may if desired be fitted with a
ball tap or other device whereby the water therein may be kept at a constant
level.
Below the ends of each of the water tubes B which extend into the furnace C

page_text: we place fire bricks or tiles P to prevent the flame impinging directly on the tubes.
The flames and heated gases pass between these tiles and between the tubes as
they ascend. The tiles become heated to a high degree and whilst they protect
the tubes assist combustion. Under the other tubes or in any suitable position in
the flue or furnace we place deflectors R or brickwork or tiles to deflect the heated
gases to the sides of the flue instead of allowing it to concentrate upon the central
tubes, thus securing that all tubes should receive an equal amount of heat.
The draw-plate oven A we construct as low or shallow as possible with but a
small space above the draw-plate and above the draw-plate oven A we construct a
"Peel oven "S at such a level that it can be worked from the floor level without
any stage. In this oven bread and confectionery and similar articles may be
baked. The floor T of the oven S is a metal plate and is set immediately over the
top row of heating tubes B of the oven A so that it obtains part of its heat through
the floor from the oven below. A trough N' to contain water may also be built
into the back or side of this oven.
A flue U runs from the front of the oven into the chimney to carry off any
steam that escapes from the oven when it is open and the top of the oven is
preferably covered with sand to prevent radiation of heat.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is.-
1. An oven constructed with a sliding draw-plate supported at the back on
wheels running upon rails and passing over rollers placed in front of the oven in
combination with a detachable trolly capable of being moved from one oven to
another by which the front edge of the draw-plate is supported when drawn
out substantially as described.
2. In a draw-plate oven the combination with the draw-plate of a detachable
removable carriage or trolly placed outside the oven to support the front edge of
the draw-plate when drawn out substantially as described.
3. An oven for baking bread or other articles constructed with a water trough
for generating steam built into the interior wall and supplied with water from the
outside substantially as described and shown.
4. In an oven for baking bread and other articles the combination with the
water tubes B projecting into the flue of one or more deflectors R placed therein
substantially as and for the purpose described.
5. In an oven for baking bread or other articles the combination with the water
tubes placed in the furnace or flues of the protecting tiles P and the deflectors R
substantially as described and shewn.
6. An oven comprising both draw-plate and Peel ovens constructed substantially
as herein described and shown.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.