Year: 1890

page_text: Date of Application, 11th Mar., 1890-Accepted, 28th June. 1890
I, SIDNEY FLAVEL Junior Kitchen Range Manufacturer of The Eagle Foundry
Leamington Co. Warwick of the firm of Sidney Flavel & Co. of Leamington
Co. Warwick do horeby 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 :-
My invention is a new principle and method of working a movable and adjustable
fire grating hereinafter called the "bottom grate" or "lifting bottom grate"-for
varying the size vertically of the fire, and it refers and applies to all forms of cooking
ranges and grates but more especially to the three classes of cooking grates commonly
known as
1. Ordinary open fire grates.
2. Portable ranges or kitcheners.
3. Leamington ranges or kitcheners for which it is particularly suitable and
designed.
This improvement is for economising fuel in all grates to which it may be applied
and it consists of a lifting bottom grate to the fire, carried at the back by metal
plates. The bottom grate when down rests on the bottom part of the fire bars being
flush with the vertical openings and giving a fire the full depth of the bars for
roasting in front and other similar purposes, in this case the bottom grate is in a
diagonal position, sloping up to the centres at the back upon which it works and the
fire is deeper at the front than at the back-for reducing the height of the fire the
bottom grate is raised by means of a wrot iron lifter which is inserted betwixt two
projecting lugs cast for the purpose on the front of the bottom grate; the bottom
grate being raised to the required height is there supported and kept in position by a
rocking pawl working on a steel or iron pin through a pair of lugs attached to
the back of the fret underneath the fire bars, the nose of the said pawl working into
a notched plate cast, or fixed, on the underside and being a part of the lifting
bottom grate. For increasing the size of the fire, the lifting iron is inserted as before
described, raising the lifting bottom grate sufficiently high to free the pawl, the
end of pawl that projects through the fret is pressed down by a poker or any other
available instrument and the bottom grate is lowered to the required depth-the
pawl being set free falls into the notched plate and keeps the lifting bottom grate in
position.
The lifting bottom grate is adjustable and may be fixed instantly at various heights
as the fire is wanted deep or shallow, the raising and supporting powers are applied
to the centre of the bottom grate-and the principle and attachment of the apparatus
for securing the lifting bottom grate in its various positions are entirely new in
pattern, working, and design.
1. The improvement may be thus particularized-I provide a cast iron or other
metal front for the fire formed of V shaped bars arranged vertically, with suitable
openings betwixt for admission of air &c., this fire front is attached by means of
screws to the fronts of the range and the vertical bars are left short at the top to
receive a loose horizontal fall bar which works on pivots through the sides of the fire
front, this fall bar may be placed in a horizontal position forming a shelf to carry
saucepans &c. or it can be placed in a line with the vertical fire bars to complete a
flush front to the fire, the fire front is finished below the vertical bars with an
ornamental plate or "fret" through which the rocking pawl that holds the lifting
bottom grate in position works, this fire front is designed mainly as a suitable form
of front for the proper working and manipulation of the bottom grate.
2. I provide a cast iron or other metal grating-a "lifting bottom grate" to form

page_text: the bottom of the fire, properly constructed with air spaces to ensure perfect
combustion of fuel &c. and of a concave form-but the exact shape is not material to
the purpose of this patent. This grating is supported and carried at the back by
iron plates and it works on pivots or centres cast thereon for the purpose-or
alternatively in slots made to carry pivots which are cast on the bottom grate,
either method being suitable and provided for, this lifting bottom grate is made with
a plate underneath which is notched along its front edge and into which the rocking
pawl for supporting and holding it in the required position works, the bottom grate is
further made with a recess in the front to receive a lifting iron for the purpose of
moving and manipulating the grate, its position being determined by the action of the
pawl and notched plate at the will of the operator, it is also made with lugs on the
front edge, such lugs projecting through the fire bars for the purpose of steadying
and guiding the grate and preventing any waste of fuel, the movement of the bottom
grate being a section of a circle, a proper camber being given to the fire bars at
the back.
3. I provide 3 cast iron or other metal plates, on eon each side the ash pit and one
at the back, these plates are attached to the fronts of the range and to each other by
means of screws and are prepared with suitable strips or pivots for carrying the
back of the lifting bottom grate, and on these the bottom grate works, these plates
also carry the fire cheeks whether of iron or fire brick which form the sides of
the fire.
The following diagrams will better illustrate this invention and enable it to be more
thoroughly understood and more easily carried into effect.
Fig. 1 is a front elevation of the vertical bars &c. forming the fire front A.
This shews the fall bar B up, O is the fret plate under the fire bars, D the projecting
end of the pawl.
Fig. 2 is a plan of the lifting bottom grate E-G. G. being the pivots on which.
it works.
Fig. 3 is a sectional view of the bottom grate E shewing the notched plate F
underneath.
Fig. 4 is a sectional view of the fire front A, with the lifting bottom grato E in
position for giving the deepest fire.
Fig. 5 is a sectional view of the fire front A, with the lifting bottom grate E in
position for giving the shallowest fire, in this view the fall bar B, is shewn down.
Fig. 6 is a full sized side view of pawl H.
1 wish distinctly to stute that I do not claim as part of my invention the shape or
character of the fire front nor the lifting botton grate, but limit my claim expressly
to the distinctive shape, attachment, character, and working of the notched plate
and pawl for adjusting the bottom grate, such arrangement being quite novel and
distinct.
Having now described and ascertained to the best of my ability, the nature of my
invention, and in what manner the same is to be performed, I declare that what I
claim is
In a cooking apparatus such as berein described, the use of a lifting bottom grate
such as herein described the attachment and mechanism of the said lifting bottom
being of special construction being made, formed, and operated as herein described and
shewn, and for the purposes herein set forth.
FREE