IMPROVEMENTS IN OPEN STOVES OR FIRE-GRATES
Year: 1881

page_text: LETTERS PATENT to Edward Richard Hollands, of Newington Green, in the
County of Middlesex, for an Invention of "IMPROVEMENTS IN OPEN STOVES
OR FIRE-GRATES."
(Void by reason of the Patentee having neglected to file a Specification in
pursuance of the conditions of the Letters Patent.)
PROVISIONAL SPECIFICATION left by the said Edward Richard Hollands at
the Office of the Commissioners of Patents on the 16th November 1881.
EDWARD RICHARD HOLLANDS, of Newington Green, in the County of
Middlesex. "IMPROVEMENTS IN OPEN STOVES OR FIRE GRATES."
This Invention has for its object improvements in open stoves or fire grates, and
relates to that class of stove or grate for which a Patent has already been granted
to me, No. 4448, in the year 1880.
The bottom and the back of the fire basket is composed of parallel bars with
spaces between which admit of a rake entering and rising between these bars.
This rake lifts the fuel in the fire basket and provides a free space in the lower part
of the basket to receive the fresh fuel.
Thus the fire is fed from the bottom, and the smoke arising from the green fuel
is burnt by the fire above.
I now arrange the front bars of the grate to slide in vertical guides, and they
are lifted by the rake to make way for the fuel to be put in. Two specially
provided teeth upon the rake enter and rise beneath suitably formed projections
upon the front bars.
The rake is carried by a bar fixed to the back rail or head at either end, and these
bars are suspended from pins which themselves are carried by arms on an horizontal
rocking shaft behind the back of this stove.
By swinging about the pins from which it is suspended the rake when required
for use is brought forward beneath the bottom of the fire basket, and then with
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page_text: the movement of the rock shaft it rises and lifting the fire in the grate prepares the
place for the fresh fuel.
The movements are imparted by means of a handle at the end of an horizontal
draw rod passing through the stove front at a convenient distance from the ground.
The draw rod is jointed behind the stove front to the upper end of a long lever
fixed upon an horizontal axis passing from side to side beneath the fire basket near
to the ground. This lever and a corresponding arm at the other end of the axis
are connected by links to the bars by which the rake is carried at a short distance
below the pins from which the rake hangs suspended.
Hence, when the lever is drawn forward by means of the draw rod the rake is
also made to swing forward, and it does so until vertical surfaces upon the stove
prevent further movement in this direction. Then the draw rod being still pulled
forward the movement of the rake is continued in an upward direction, the rake
rising along the guide surfaces.
When the rake is at its highest position a pawl or hook catches upon a stud
projecting from one of its side bars and sustains the rake, so that when the draw
rod is pushed back the rake does not at once descend but first moves back so as to
retire its prongs between the back bars of the fire basket, at the same time allowing
the front bars of the grate gradually to descend.
The catch does not sustain the rake during the whole of the backward movement,
but it lands a stud fixed to one of the side bars of the rake on the top of a fixed
guide piece, which sustains the rake until the backward or retiring movement is
complete, and then the guide controls the rake in its descent. In place of arranging
the front bars of the fire grate to slide up in vertical guides I sometimes arrange
the lower bar to descend out of the way, this bar being then carried by arms or
levers pivotted to the side checks of the fire baskets.
In this arrangement as the rake rises two special prongs come against the inner
ends of these arms or levers, and raising them depress their outer ends by which
the lower front bar is carried.