Improvements in and connected with Bakers' Ovens.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in and connected with Bakers' Ovens.
I, FREDERICK SMITII, of No. 23, York Street, Lambeth, in the County of Surrey,
Oven Builder, do hereby declare the nature of this invention to be as follows:-
One part of my improvements refers to a device for raising the latch of the oven
door, and consists in a bent lever the horizontal part of which reaches with its
end or nose under the latch and has its fulcrum near it on the oven door while its
vertical round part or shank is fitted to receive a wooden or other handle that can
turn freely thereon; thus the handle will turn on its shank while the door is being
opened and the position of the hand need not be shifted as was heretofore necessary.
Another part refers to the arrangement of the flue or flues that pass off from the
oven. In order to keep the steam in, and especially in those ovens with low crown
and with the bottom slanting down towards the front that are used for baking
French, German, or Vienna bread either alone or in conjunction with other goods,
and also in order to ensure additional cleanliness in the baking I provide in connec-
tion with the steep downward incline termination of the oven bottom in front, a
flue, or flues to connect with the chimney and provide a damper or dampers there-
in; one flue and damper are preferred, the flue passing down straight and then
slanting.
In conjunction with an ordinary oven door or not and in order to close the open-
ing into the said flue I provide a door hinged at the bottom and capable of opening
inwards being swung down to cover the said opening so that the oven may be,
conveniently filled with and emptied of the goods. This door may also be made
to swing outward if it is desired when sweeping the oven to pass the deposit into
the aforesaid flue and then out through a soot door low down in front.
In order to allow the door to swing forward and rest upon the inclined mouth
plate the oven door framing is fitted with a narrow frame round the door opening
hinged on one side and held by a pin or key at the other side the swing door when
closed rests against the inside of this frame; when the pin has been taken out the
narrow frame can be swung out to one side and the door can then be let down in
front. To move the said door I may employ a lever or levers; in one arrangement
I provide the pintle on which it is fixed or cast with a lever on one side, say the
left side of the oven door, this lever has a weight to balance the weight of the door
and is operated by a rod with bow handle passing out through the brickwork;
by pulling this rod the door is swung inward; to move it outward after the narrow
frame has been removed I remove the just named lever from the pintle and operate
a lever on the other or right hand pintle of the door.

page_text: Under the oven mouth
may apply an auxiliary door or damper for the afore-
said flue from the oven bottom for the purpose of more perfectly retaining the
steam in the oven the said flue may be continued in an upward direction or hori-
zontally towards the chimney.
Below the oven mouth I may also provide a recess or chamber with top inlet
for receiving a basket wherein the loaves are allowed to fall as they are taken out
to the front of the oven.
The interior of the oven is lighted by a gas jet above the oven door and
I provide a shield or guard to prevent the steam that may escape when the door is
opened from putting out or interfering with the gas jet.
Improvements in and connected with Bakers' Ovens,
I, FREDERICK SMITH, of No. 23, York Street, Lambeth, in the County of Surrey,
Oven Builder, 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:-
One part of my improvements refers to a device for raising the latch of the
oven door and is illustrated by the front view Fig. 1, horizontal section Fig. 2
and sectional side elevation Fig. 3. A is the oven door B the latch, and C a bent
lever the horizontal part of which reaches with its end or nose C¹ into a slot in the
latch B (or it might take under it). This lever has its fulcrum on the oven door
near this nose end, for instance in the staple D as here shown, the staple being
formed with lugs D¹ for that purpose. The vertical part or shank of the lever
is fitted to receive a handle or ferrule C³ of gun metal wood or other suitable
material that will turn freely on the shank while the door is being opened, so that
the position of the hand need not be shifted as was heretofore necessary when
opening or closing the oven door.
Another part of my invention refers to the arrangement of the flue or flues that
pass off from the oven and consists in means for keeping the steam in and for
ensuring additional cleanliness in the baking. Fig. 4 is a front elevation and
Fig. 5 a vertical longitudinal section of the arrangement as applied to a so-called
German oven or an oven with low crown and with the bottom E slanting down
towards the front, used for baking French German or Vienna bread either alone
or in conjunction with other goods. In connection with the steep downward
incline termination E¹ of the oven in front I provide a flue F (or flues) to connect
with the chimney and provide a damper (or dampers) therein); one flue and damper
are preferred the flue F passing down straight, then slanting then straight in the
case here shown and then through a damper N Figs. 4 6 and 7 presently to be
described off to the chimney. In conjunction with an ordinary oven door, (or not
so), as in Figures 4 and 5 (and in connection also with a flat bottom oven) and in
order to close the opening into the said flue F I provide a damper or door Ġ hinged
at the bottom on the hinges I¹ and capable of opening inwards as indicated by the
dotted arc in Fig. 5. This door in its downward position covers the said opening
into the flue F so that the oven may then be conveniently filled with and emptied

page_text: of the goods. This door G may also be made to swing outward if it is desired when
sweeping the oven to pass the deposit into the flue F and then out through a soot
door low down in front. In order to allow the door G to swing forward and rest
upon the inclined mouth plate H the oven door framing I is fitted with a narrow
frame K round the door opening. The frame K is hinged on one side, on the left
as shown in Fig. 4, and held by a pin or key K' at the other side. Or the frame K
may be made detachable. The swing door G when closed rests against the inside
of this frame K. When the pin K¹ has been taken out the narrow frame K can be
swung out to one side, and the door G can then be let down in front so as to rest
upon the inclined mouth plate H. To move the door G I may employ a lever or
levers; in the arrangement shown, I provide the pintle G¹ on which it is fixed
or cast with a lever G on one side say the left side, of the oven door; this lever
has a weight G to balance the weight of the door G and is operated directly or
indirectly by a lever or rod G2 with a bow handle passing out to the front of the
iron or brick work; by pushing the lever G2 (or a rod connected thereto) the door
is swung inward and to move the door outward, after the narrow frame K has been
removed or swung back I first withdraw the pin X on the left hand side, thus
releasing the lever G' from the pintle, and then operate a detachable lever L
inserted in a slot in the pintle G¹ on the other or right hand side of the door.
Under the oven mouth I may apply an auxiliary door or damper M for the
flue F from the oven bottom for the purpose of more perfectly retaining the steam
in the oven.
The flue F which is connected with the smoke outlet from the
oven may be diverted to one side and then to the chimney as stated, or horizontally.
In any case it is fitted with the damper N Fig. 4 before referred to and which is
shown separately in the horizontal section Fig. 6 and vertical longitudinal section
Fig. 7. The damper N consists of an upper and a lower plate united by stays and
moved by a handle N¹. It works in a box shaped damper frame O fixed in the
flue F and formed with a vertical partition 0¹. The inlet for the steam is at one
side from the side flue P leading from the roof of the oven front. If the damper
As drawn forward it puts the smoke flue into action and cuts off the steam flue P,
while the partition O' prevents the steam from passing backward into the smoke
flue F. If on the other hand the damper is pushed right back as shown the smoke
flue F is completely cut off and the steam flue being thus opened is put into action.
Thus when the oven door is closed and the oven is being fired the steam flue is
closed and the. smoke allowed to escape, while during the baking and with the oven
door open the steam can escape to the chimney, the smoke flue F being then closed.
Below the oven mouth I may in the case of a German oven also as shown in
Figs. 4 and 5 provide a recess or chamber Q with top inlet Q¹ for receiving a basket
wherein the loaves are allowed to fall as they are taken out to the front of the
oven.
The interior of the oven is lighted by a gas jet R above the oven door, and I
provide a shield or guard S to prevent the steam that may escape when the door is
opened from putting out or agitating the gas jet. T is a reflector, and Ua mica
pane, both as generally used.
Fig. 8 is a vertical longitudinal section of the front part of an oven with flat
bottom E provided with a small swing door G and downflue F.
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:-
1. The lever C with loose handle or ferrule C³ for facilitating the lifting of the
oven door latch.
2. The application of a descending front flue from the oven bottom in combina-
tion with a door or damper which is adapted to swing down upon and cover the
outlet to such flue and if desired also adapted to swing down forward, substantially
as and for the purposes set forth.
3. The construction of the swing damper or door G and the hinged or detachable

page_text: frame K with the means for operating the damper substantially as described and
shown.
4. The flue F in combination with the damper N damper frame O and flue P
substantially as set forth.
5. In combination with the flue F and damper N the auxiliary damper M as
and for the purpose set forth.
Dated this Thanter fifth dow of M 1000
JENSEN & SON,
77, Chancery Lane, London, W.C.,
Patent Agents.