Year: 1887

page_text: Date of Application, 28th Jan., 1887
Complete Left, 27th Oct., 1887
Complete Accepted, 29th Nov., 1887
We, JOHN MACINTYRE, ALEXANDER BUCHAN and THOMAS BUCHAN, all of the firm
of Buchans and Macintyre of 50 Union Street, Glasgow, in the County of Lanark,
North Britain, Ironmongers do hereby declare the nature of this invention to be as
follows:-
This Invention, which relates to improvements in kitchen ranges, has reference in
the first place to the raising and lowering of the grate bottom or fire bars on which
the fire is supported. For this purpose the underpart of the grate is formed at each
end or at the front and back with two inclines projecting downwards, each incline
being in the direction opposite to that of the other. Beneath the grate a horizontal
bar is carried upon a central pivot on which it is capable of being moved through an
angle horizontally. The ends of this bar bear against the two inclined planes and as
they are pressed against or withdrawn from these inclined planes, the inclined planes
themselves together with the grate to which they are attached are raised and lowered.
Stops may be provided for fixing the grate at any required height between its highest
and lowest points. The horizontal bar is operated either by a portion of itself
projecting through the front of the grate or by a handle or lever attached thereto
which can be pulled inwards or outwards.
The Invention relates in the second place to the means for converting a kitchen
range into an open or closed range at will. For this purpose the flue at the back is
suspended upon counter-weighted levers which, when the range is used as a closed
range, keep the flue in its position to close up the back of the grate, and when the
range is to be used as an open range these counterweighted levers are pushed back by
the act of sliding inwards the top plate or fire plate of the range the back edge of
which lifts the counterweights and thereby turns the levers to which they are attached
on their pivots so that the flue is moved forwards and outwards until it assumes the
necessary horizontal position over the top of the range. The top plate or fire plate
of the range may be moved horizontally or it may be slid into inclined guides.
Dated this 27th day of January 1887.
J. H. JOHNSON, DAY & JOHNSON,
115, St. Vincent Street, Glasgow,
Petitioners' Agents.

page_text: We, JOHN MAC INTYRE, ALEXANDER BUCHAN and THOMAS BUCHAN, all of the firm
of Buchans and Mac Intyre of 50 Union Street, Glasgow, in the County of Lanark,
North Britain, Ironmongers 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 :-
Our Invention, which relates to improvements in kitchen ranges, has reference in
the first place to the raising and lowering of the grate bottom or fire bars on which
the fire is supported. For this purpose the underpart of the grate is formed at each
end or at the front and back with two inclines projecting downwards, each incline
being in the direction opposite to that of the other. Beneath the grate a horizontal
bar is carried upon a central pivot on which it is capable of being moved through an
angle horizontally. The ends of this bar bear against the two inclined planes and as
they are pressed against or withdrawn from these inclined planes, the inclined planes
themselves together with the grate to which they are attached are raised and lowered.
Stops may be provided for fixing the grate at any required height between its highest
and lowest points. The horizontal bar is operated either by a portion of itself
projecting through the front of the grate or by a handle or lever attached thereto which
can be pulled inwards or outwards.
The Invention relates in the second place to the means for converting a kitchen
range into an open or closed range at will. For this purpose the flue piece at the
back is suspended or pivoted upon curved levers which may or may not be counter-
weighted. When the range is used as a close range, the flue-piece is maintained in a
position close up against the back of the grate, and when the range is to be used as
an open range the levers to which the flue piece is pivoted are moved by the act of
sliding inwards the top plate or fire plate of the range, the back edge of which plate
lifts the lower part of the levers to which the counterweights when used are attached
and thereby turns the levers on their pivots so that the Hue-piece is moved forwards,
outwards and downwards until it assumes the necessary horizontal position over the
top of the range. The top plate or fire plate of the range may be moved horizontally
or it may be slid into inclined guides.
And in order that our said Invention may be properly understood we have hereunto
appended three explanatory sheets of drawings showing how we carry the same into
practical effect and in several figures of which corresponding parts are marked by
the same Letters of Reference. Of these drawings Figure 1, is an elevation of the
front part of a kitchen range shewing both the first and second part of our said
invention applied thereto. Figure 2, is a transverse section through the firegrate
and front part of the range illustrating the mode of carrying out the first head of
our invention and Figure 3, is a plan corresponding to Figure 2. In each of these
figures the movable firegrate is marked A, and as will be observed it is formed with
two projecting pieces B, and B'. These projecting pieces B', and B2, have their lower

page_text: sides B, and B, inclined in opposite directions respectively as shewn more especially
at Figure 2. Across the central part of the framing of the grate the bar C, shown
in dotted lines in figures 1, 2 and 3 stretches. In the centre of this bar a pin hole is
formed, the bar at the centre being enlarged for this purpose and through which the
pin D, passes. This pin D, also forms the centre or pivot upon which the bar E, is
capable of being moved round in a horizontal plane. Near each end of the bar E.
the said bar bears against the respective inclined planes B³, and B, of the movable
grate. At one end the bar E, is fitted with a sliding link F, formed with a ring G,
at its outer end, the inner end being connected to the bar E, by a pin joint H. On
pulling the link F, outwards by applying the hand to the ring G, the bar. E, is caused
to move round its axis in a horizontal plane on the pin D. This horizontal motion of
the bar E, causes its opposite ends to be pressed respectively against the opposite
inclined planes B³, and B', and as the motion and pressure of the said bar E, is
continued by pulling the ring G, so the movable grate A, is raised higher and higher
until the upper position thereof is reached as shown by the dotted lines X, in Figures 1,
and 2; and vice versa as the said bar E, is moved in the opposite direction by pushing
the link F, and ring G, inwards so the said movable grate A, is correspondingly
lowered. By this means it therefore follows that according to the position which the
movable horizontal bar E is made to occupy in the plane of its rotation so the height
at which the movable firegrate A, is situated is thereby accordingly regulated. The
underside of the bar E is made with a rack or catches, the latter of which holding
upon or over the front plate of the range, retains the bar and therefore the movable
grate at any required height. For the purpose of preventing the bar F and its con-
necting ring G, from projecting too far outwards in front of the range, this bar is
preferably constructed with a hinged like joint at J, so that when the joint J, bas
been drawn out beyond the front K, of the stove the outer portion of the bar F is
turned downwards upon the said joint and becomes suspended thereby in front of the
range. In lieu of placing the inclined planes B³, and B4, at the ends of the movable
firegrate A, they may be placed at the front and back thereof respectively in which
case the horizontal bar E, stretches across and beneath the firegrate in the direction
opposite to that shown in Figure 3, and one end of the said bar in this case projects
through a horizontal slot formed in the front of the firegrate which slot is made of
sufficient length to allow a requisite extent of movement in a horizontal plane.
At Figures 4 and 5 the second part of our invention is shewn.
Figure 4 is a transverse section of a portion of a kitchen range in which the
movable back flue is in its uppermost or closed position and Figure 5, is another
transverse section of a kitchen range but in which the said movable flue is
shewn in its lowest or open position. The movable flue is marked L, in figures 1,4
and 5; it consists of a hollow casting formed with the front or top piece L, and
the two side pieces M. It is pivoted at or about its centre N, at each side with
a counterweighted lever O, these levers being carried on pivots P, fixed to the
back framework of the firegrate. In the top of the firegrate there is fitted the
sliding plate Q, which when the range is working as a close range, occupies the
position shewn at Figure 4, that is to say it is drawn over the top of the fire,
but when the range is working as an open range as shewn at Figure 5, this
plate Q, is pushed backwards sliding into a space R, formed under the top plate
of the range. The act of pushing the plate Q, into the space R, also causes the
movable flue L, to be forced into the position it occupies as shown at Figure 5,
that is to say, the open position. The flue is forced into this position in the
following manner, that is to say, the front edge of the plate Q, as soon as it
comes into contact with the lower part of the levers O, forces them to turn on
their pivots P, whereby the counterweights S, are moved upwards and the upper
parts of the levers moved outwards and downwards. As the flue L, is coupled
to the levers O, by the pivots N, so the outward movement of the upper part of
5 the levers O, causes the flue L, to be moved outwards and simultaneously to turn
on the pivots N, until it occupies the horizontal position shewn in Figure 5, and
in which position it is maintained by the counterweighted levers O, resting upon

page_text: the back part of the plate Q, as shewn in the said figure 5. The back of the grate
at the part where the movable flue L, is situated is provided at its inner side with
two hinged plates T, as shown in dotted lines at Figure 1, and transversely at
figures 4 and 5. When the Hue 1, is pulled out into the horizontal position,
these plates T, move upon their hinges until they touch the inside of the back
plate of the cooking range thereby closing up the openings made therein for the
réception of the side portions of the movable flue piece L, when that flue piece is
situated in its vertical position shown at Figure 4. When the flue piece L, is in
this last mentioned position the plates T, are moved backwards on their hinged
joints and occupy the position shewn at Figure 4.
Under a modification of the second part of our invention the counter weights S. S.
shown in Figures 4 and 5 may be dispensed with, in which case a lever U, is
provided by which the flue piece L, is drawn outwards or pushed back, the lever U,
being formed with a hook in its end for the purpose of temporarily connecting it
with the flue-piece when the said flue piece is being either raised or lowered.
Having now particularly described and ascertained the nature of our said Invention
and in what manner the same is to be performed I declare that what I claim is :-
1. The improvement in kitchen ranges consisting of the firegrate being formed
with two inclined planes at either end or at the front or back thereof and acted upon
by a horizontal bar pivoted at its centre and movable on the said pivot in a horizontal
plane for the purpose of raising or lowering the said firegrate substantially as
hereinbefore described and shewn, upon the annexed sheets of drawings.
2. The improvement in kitchen ranges consisting of a movable flue piece pivoted
on levers which are also pivoted to the back or framework of the kitchen range, the
said levers being counterweighted or not counterweighted and operated either by the
movable sliding plate in the top of the range or by a lever applied to a pin in the
Alue piece itself substantially as hereinbetore described and shewn upon the annexed
sheets of drawings.