IMPROVEMENTS IN ROCKING BARS, OF FURNACES OF STRAM, AND OTHER BOILERS
Year: 1884

page_text: I WILLIAM BALL, of Number 19 Cromwell Terrace, Blackburn, in the County
of Lancaster, Engineer, do hereby declare the nature of my said invention for
"IMPROVEMENTS IN ROCKING BARS, OF FURNACES OF STRAM, AND OTHER BOILERS,"
to be as follows:-
This invention consists of an improved construction of furnace bar, of the class
known as movable, or "rocking" bars, the motion being imparted to such bars, at
intervals of time, for the purpose of breaking up the fire, and preventing the
adhesion of clinker, and securing the expulsion, or discharge of the same, from the
furnace.
Furnace bars according to this my invention, are constructed in sections, that is
to say, each "bar," consists of several ribs, with intervening spaces, or air passages,
between them, the transverse ends of each bar, connects the several ribs, and by
preference, the bottom of each bar, and its several ribs are radial, from a point at
or about a little below the fire bearing surface, or face of the bar, and at which
point, and at each end of the bar, projects a pin or axis, which is received in a slot
or recess, formed in a longitudinal bearing rail, there being one of such rails,
at each side of the furnace-From the underside of each furnace bar, and at an
angle thereto, is a finger or lever, the lower end of which, by an eye and pin, is
connected to a longitudinal actuating bar, the end of which nearest the dead plate,
is by link, connected with an arm and lever, mounted upon a cross shaft.
The action of the bars and apparatus connected therewith is as follows:-
On the lever being operated, its connections, draw forwards the actuating bars,
and the angled fingers or levers attached thereto, and connected with the furnace
bars, the latter are thus caused to make, a quarter revolution or turn, thereby
moving the fire bearing surface, of each furnace bar, from the horizontal to a vertical
position, the latter position of the said bars, largely increases the space between
each two bars, through which space, clinker and refuse is discharged, and as the
furnace bars, may, by means and apparatus above described, be operated, without
necessity of opening the furnace door or doors, the entrance of cold air is
avoided.
It will be understood, that for the purpose of agitating the fuel, the furnace
bars, by the apparatus herein described, may be moved, or rocked, to and fro,
within any less portion of an arc, than a quarter revolution or circle.

page_text: COMPLETE SPECIFICATION.
Improvements in Rocking Bars of Furnaces of Steam and other
Boilers.
"
I WILLIAM BALL, of Number 19 Cromwell Terrace, Blackburn, in the County
of Lancaster, Engineer, do hereby declare the nature of my said invention for
"IMPROVEMENTS IN ROCKING BARS OF FURNACES OF STEAM AND OTHER BOILERS
and in what manner the same is to be performed, to be particularly described and
'ascertained in and by the following statement:-
This invention consists of an improved construction of furnace bar of the class
known as movable or rocking bars the motion being imparted to such bars at
intervals of time for the purpose of breaking up the fire and preventing the
adhesion of clinker and securing the expulsion or discharge of the same from the
furnace.
Such being the nature and object of my said invention, the following is a
complete description of same, reference being had to the accompanying drawings
forming a part of this specification, in which :-
Fig. 1 is a longitudinal sectional elevation shewing my improved furnace bars in
position.
Fig. 2 is a like view of bars drawn back and tilted to the vertical position
breaking up the fire and for removal of clinker.
Fig. 3 illustrates furnace bars in section, one half the bars as shewn, being in
the raised or tilted position, the other half being in horizontal position.
Fig. 4 is an elevation of one of the side rails for supporting the furnace bars,
and Fig. 5 is a sectional elevation of one of the bars drawn about full size.
Furnace bars according to this my invention are constructed in sections that is
to say each "bar" 1 consists of several ribs 2, 3, 4, 5, 6, with intervening spaces or
air passages 7 between them, the transverse ends 8 of each bar connects the several
ribs 2, 3, 4, 5, 6, and by preference the bottom of each bar and its several ribs are
radial from a point at or about a little below the fire bearing surface or face of the
bar 9, and at which point and at each end of the bar projects a pin or axis 10,
which is received in a slot or recess 11, formed in a longitudinal bearing rail 12,
there being one of such rails 12 at each side of the furnace-From the underside
of each furnace bar, and at an angle thereto is a finger or lever 13, the lower end
of which, by an eye 14, and pin 15, is connected to a longitudinal actuating bar 16,
the end of which nearest the dead plate, is by link 17 connected with an arm 18,
and lever 19, mounted upon a cross stud 20, the said stud being secured to a
bracket bolted to dead plate 21.
The action of the bars and apparatus connected therewith is as follows:-
On the lever 19 being operated to its full extent, its connections 17, 18, draw
forwards the actuating bars 16, and. the angled fingers or levers 13, attached
thereto, and connected with the furnace bars, the latter are thus caused to make a
quarter revolution or turn see Fig. 1, thereby moving the fire bearing surface of
each furnace bar, from the horizontal to a vertical position, the latter position of
the said bars largely increases the space between the bars, through which space

page_text: clinker and refuse is discharged, and as the furnace bars may, by means and
apparatus above described, be operated, without necessity of opening the furnace
door or doors the entrance of cold air is avoided.
It will be understood that for the purpose of agitating the fuel the furnace bars,
by the apparatus herein described are to be moved or rocked to and fro by the
lever 19 within any less portion of an arc than a quarter revolution or circle, and
that in lieu of attaching and actuating all the bars by means of one draw rod 16,
there may be two or more of the draw rods 16, (and two or more levers 19)
employed so as to attach thereto a less number than the whole of the bars, thereby
to afford facility for operating the bars in sections or wholly as circumstances
require, and I would further point out that although I have shewn the underside
of the bars as curved or semicircular it is obvious that the under side of the bars
might form half an hexagon or actogon so as to admit of the one bar clearing
another when being moved from position of Fig. 1 to Fig. 2.
Having thus 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
Grate bars, constructed as, and combined with, the draw bar or draw bars for
actuating the same, as herein fully described, and substantially as illustrated by
drawings annexed.
WILLIAM BALL.
By his Agent, Walter Brierley,
Town Hall Buildings, Halifax.