Year: 1886

page_text: Date of Application, 28th Sept., 1886.
Complete Left, 27th June, 1887.
Complete Accepted, 15th July, 1887.
I WILLIAM MORRISON, of East Wallace Street, Grahamston, Falkirk, Stirlingshire,
Foreman Grate Fitter, do hereby declare the nature of my invention to be as
follows:-
-
This invention comprises certain improvements connected with close and open
cooking ranges, for the raising and lowering of the bottom grate plate or bars of the
fire, so as to require less fuel and regulate the height of the fire, and maintain it at
the upper part of the grate.
The improvements of this invention consist all as follows:-In mounting the
bottom plate or bars of the fire place on a frame with slides or stems projecting
downwards so as to work in slotted or slide guides in the side cheeks of the fire-place
under it. The plate in its lowest position would rest on the side bars as usual, and by
one arrangement would be raised to any desired height by a crank spindle having its
back and front axial ends oscillating in journal bearings in the back and front plates
of the grate at one side, a little below the under side of the plate, and be oscillated by
a kneed end in front, and lever for the purpose of taking on to this; and raise the
plate, by the action of the crank, which would reach over to rather past the centre,
and act on a longitudinal bar or rib formed or secured in the centre of the bottom
grate plate, or in a groove in this bar or rib, preferably by means of an anti-friction
roller revolving on the bar or within the groove in it. This bar or groove might be
straight or curved either in the upward or downward direction as desired and found
most convenient, according to the size of grate bottom to be raised; the crank being
long enough to raise it to the highest position desired within the fire-place, raising
and carrying the fire with it, between the side fire-grate bricks and the back brick or
boiler, and the front ribs of the grate, to any intermediate height desired, a check
lever being fitted at the other side of the fire-place, fulcrumed at the back of the

page_text: grate, with the handle outside, having a central bolt or catch formed on it for entering
notches or recesses formed in the guiding stem of the bottom rib plate on that
side of the grate, so as to secure this in any pisition it is raised to, all as described.
Another equivalent mode of raising and holding up the bottom ribbed plate as
stated consists in forming or securing on its under front side a third vertical stem,
preferably working in guides on the inner front side or plate below the fire-place.
This stem would be formed with recesses or notches in or on its front side, opposite a
fulcrum hole or recess in the front plate, into which the point of a poker or other
equivalent would be inserted to raise the stem and grate bottom gradually as desired,
and which might be left in the recess to retain it in position; or another pin might
be inserted through a hole above or below for that purpose into any of the recesses or
under the projections, or the catch lever might be used as before described to retain
the bottom of the grate in any position to which it is raised.
Dated this 28th day of September 1886

page_text: Improvements in Cooking Ranges.
I, WILLIAM MORRISON, of East Wallace Street, Grahamston, Falkirk, Stirlingshire,
Foreman Grate Fitter, do hereby declare the nature of my invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement in writing, reference being had to the accom-
panying sheet of Drawings, and to the letters and figures marked thereon, that is to
say:
My Invention comprises certain improvements connected with close and open
cooking ranges, for the raising and lowering of the bottom grate plate or bars of the
fire, so as to require less fuel and regulate the height of the fire, and maintain it at
the upper part of the grate.
And in order that my said invention, and the manner of performing or carrying
the same into effect or practice may be properly understood, I have hereunto appended
an explanatory sheet of Drawings, in which the same reference letters are used to
indicate corresponding parts in all the figures where shown. Figure 1 is a front
elevation in perspective, with the front grate bars E removed, and Figure 2 a
transverse section taken on the line 1 - 1 of Figure 1, of an ordinary close and
open Kitchen or cooking range, having my improved fittings for raising and lowering
the bottom grate plate or bars A of the fire-place, applied thereto. While Figures 3
and 4 are detail views to an enlarged scale of my improved mechanism for raising
and lowering the bottom grate plate or bars A of the cooking range.
Referring to these Drawings:-the improvements of my invention consist all as
follows: In mounting the bottom plate or bars A of the fire place on a frame with
slides or stems A¹ projecting downwards so as to work in slotted or slide guides A² in
the side cheeks A³ of the fire-place under it. The plate A in its lowest position
would rest on the side bars or plates A' under the grate as usual, and by one
arrangement would be raised to any desired height by a crank spindle or transverse
spindle B, having a duplex curved crank B¹, B. The spindle B has its back and
front axial ends oscillating in journal bearings in the front and back plates a, a¹ of
the grate at one side, a little below the under side of the plate A in its lowest position
and be oscillated by a notched or toothed boss b formed on the front end of the
spindle B, this boss being turned by a kneed poker or lever 6" inserted into a slot 6¹
in the boss b, and a pawl 62 would retain the notched boss b and plate A in the
desired position. The plate A is raised or lowered by the action of the curved,
crank B B which would reach over to rather past the centre of the bars A, and act
on longitudinal bars or ribs c and side snugs c¹ formed or secured in the bottom grate
plate A, or it might be in grooves in these bars or ribs, and which might be done by
means of an anti-friction roller revolving on each bar or within the groove in it.
A transverse pin c³ is fitted between the longitudinal snugs c¹ c² to guide the duplex
curved bar B¹ between itself and the under guide bar c while raising or lowering
the plate A; and a projecting stop piece e³ may be fitted in the bars A to guide and

page_text: stop the curved crank B' in its highest position. The guide bars c might be straight
or curved either in the upward or downward direction as desired and found most
convenient, according to the size of grate bottom to be raised; the crank B¹ being
long enough to raise it to the highest position desired within the fire-place, raising
and carrying the fire with it, between the side fire-grate bricks and the back brick or
boiler D, and the front ribs E of the grate, to any intermediate height desired, being
shown in their highest position in all the figures and in dotted lines in their lowest
position.
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 :-
First. In close and open cooking ranges the construction, or arrangement and
combination of the parts of the devices or fittings for raising and lowering and
retaining in any position, the bottom grate plate or bars of the fire-place, all sub-
stantially as and for the purposes herein described, in reference to and shown in the
accompanying Drawings.
Second. In close or open cooking ranges, the construction and use of a spindle B
and crank or curved duplex bar B₁ for raising and lowering and retaining in any
position the bottom grate plate or bars A of the fire-place, all substantially as and
for the purposes herein described, in reference to and shown in the accompanying
Drawings.
Third. In close or open cooking ranges, the construction and use of slides or
stems A working in slotted or slide guides A' in the side cheeks A³ of the fire-place
for the purpose of guiding the bottom grate plate or bars A while being operated by
the raising or lowering mechanism, all substantially as herein described, in reference
to and shown in the accompanying Drawings.