Year: 1887

page_text: Date of Application, 8th Sept., 1887
Complete Left, 8th June, 1888
Complete Accepted, 13th July, 1888
1, ALBERT JOHN ROBERTS, of 16 St. Peters Street, Hereford, in the county of
Hereford, Baker, do hereby declare the nature of this invention to be as follows:-
This invention relates to an arrangement of apparatus to be applied to bakers' ovens
for the purpose of lighting the interior thereof and comprises an iron box built in the
wall of the oven and containing a gas bracket which by lowering a handle is carried
forward so as to cause a burner to project inside the oven the light being turned up at
the same time.
By raising the handle the light is withdrawn and turned down to a small jet a
stopper closing over the opening and preventing the escape of steam. The stopper is
kept closed by means of a spring. It may be necessary to frequently make use of
the light at short intervals of time and in such case in order that the gas shall not bo
turned out a stop is provided to limit the movement of the handle.
When it is required to turn the gas out the stop is removed and the handle raised
above it.
The handle is arranged so that the oven door cannot be shut until the light is
withdrawn from the oven.
D
1
02
1987
G. F. REDFERN & Co.,
+, South Street, Finsbury, London,
Agents for the Applicant.

page_text: I, ALBERT JOHN ROBERTS, of 16, St. Peters Street, Hereford, in the County of
Hereford, 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 relates to an arrangement of apparatus to be applied to bakers' ovens
for the purpose of lighting the interior thereof and comprises an iron box built in the
wall of the oven and containing a gas bracket, which, by lowering a handle, is carried
forward so as to cause a burner to project inside the oven, the light being turned up
at the same time.
By raising the handle, the light is withdrawn and turned down to a small jet, a
stopper closing over the opening and preventing the escape of steam. The stopper is
kept closed by means of a spring.
It may be necessary to frequently make use of the light at short intervals of time
and in such case, in order that the gas shall not be turned out a stop is provided to
limit the movement of the handle.
When it is required to turn the gas out, the stop is removed and the handle raised
above it. The handle is arranged so that the oven door cannot be shut until the light
is withdrawn from the oven.
In order to enable my invention to be fully understood I will describe how it can
be carried into practice by reference to the accompanying drawing, in which
Figure 1 is a longitudinal section.
Figure 2 is a horizontal section, and
Figure 3 is a front view of my apparatus for lighting the interior of bakers' ovens.
Similar letters in all the figures indicate similar parts.
a is the iron box which is built into the wall of the oven, part of which is shown
at A.
b, b' is the gas bracket fixed at c to the side of the iron box a and jointed at c¹ so
that one part b¹ is moveable upon the other part b. The moveable part 6¹ has jointed
thereto a pipe e extending through a passage f and carrying at its inner end a gas
burner g which, when the gas is turned down or off, is situated within the passage f,
as shown in figure 2.
is the handle for causing the gas burner g to project inside the oven and the light
to be turned up at the same time. This is effected by fixing the handle h on the
plug i of the gas tap and arranging it so that it works in a slot ; in one arm k of a
j
bell-crank lever kk, thereby operating the said lever which is jointed at 1 to a
bracket m on the box a. The other arm k¹ of the bell-crank lever is also slotted and
in the slot marked n works a pin o projecting from the moveable part 6³ of the gas
bracket.

page_text: For
p is the stopper closing over the opening in the end of the passage f to prevent
escape of steam, when the light is withdrawn from the interior of the oven.
this purpose the stopper p is jointed at r, r by curved arms 8, s to the pipo e so that
when the pipe e is moved to carry the burner g into the oven the stopper p will fall
from the opening q and when the pipe e is moved in the opposite direction, the stopper
will follow it and close the opening q it being raised into this position by the curved
arms s, & sliding on the edge of the opening. t is the spring for keeping the stoppor
closed.
u is the stop for limiting the upward movement of the handle h and preventing the
gas, when required, from being entirely turned out. The stop u consists of a pin
carried on a spring rivetted to the guide w in which the handle works. By pulling
out the stop u the handle can be raised from the position shown in full lines in figure 3
(in which position it has only lowered the light) to that shown by the dotted lines
when it will have turned out the light.
B indicates the door of the oven.
By this arrangement it will be seen, that the gas burner g having been lighted and
the handle placed in the position indicated by the full lines in figure 3, the gas will
be turned down low and the oven door B is free to be opened and shut. If it be
required to inspect the interior of the oven the door B must be first opened and the
handle h being then lowered into the position indicated by the dotted lines in figure 3,
the gas tap will be operated so as to turn up the light burning at the gas burner g
which will be simultaneously thrust into the interior of the oven thereby lighting up
the same, the stopper p falling into the position shown in dotted lines at figure 1.
So long as the handle remains in its lowered position it will prevent the oven
door B from being closed as will be easily understood by reference to figure 3, and
the attendant is therefore obliged to raise the handle and turn down the gas before ho
can close the oven. Simultaneously with this action the gas burner
from the interior of the oven and the stopper p is closed over the opening q.
g is withdrawn
The slot n is somewhat enlarged at its upper part, as shown in figure 1, to allow the
bell-crank lever to move, after the stopper p has been closed, sufficiently to allow the
handle to turn the light right out.
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 :---
1. The application to a baker's oven of a gas burner adapted to be projected into
the interior of the same the light being simultaneously turned up.
2. The combination with a gas burner adapted to be projected into and withdrawn
from a baker's oven, of a stopper or shutter for preventing the escape of steam when
the gas burner is withdrawn, substantially as setforth.
3. The manufacture and use of the improved apparatus for lighting the interior of
baker's ovens substantially as herein before described and illustrated in the accompanying
drawing.
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