IMPROVEMENTS IN MOVEABLE FURNACE BARS, AND IN APPARATUS FOR MOVING AND WORKING FURNACE BARS
Year: 1879

page_text: LETTERS PATENT to James Proctor, Engineer, of 36, Craven Terrace, Burnley,
in the County of Lancaster, for the Invention of "IMPROVEMENTS IN MOVEABLE
FURNACE BARS, AND IN APPARATUS FOR MOVING AND WORKING FURNACE
BARS"
Sealed the 15th July 1879, and dated the 16th January 1879.
PROVISIONAL SPECIFICATION left by the said James Proctor at the Office
of the Commissioners of Patents on the 16th January 1879.
"
JAMES PROCTOR, Engineer, of 36, Craven Terrace, Burnley, in the County of
Lancaster. IMPROVEMENTS IN MOVEABLE FURNACE BARS, AND IN APPARATUS FOR
MOVING AND WORKING FURNACE BARS."
This Invention relates to improved moving bars for furnaces, and apparatus for
working or operating bars of furnaces.
According to one method of construction I employ bars, every alternate one
being moveable by means of a draw bar. The moveable bars are so attached or
connected to the draw bar as to ensure movement of the bars in the direction of the
bridge, so as to gradually pass the fuel forwards.
Another construction comprises moving bars supported by a cross shaft near
the bridge end of the bars. Each alternate bar is operated and lifted by means
of levers attached to a cross rocking shaft in front of the firing end of the bars.
Another construction comprises bars occupying an inclined position. A portion
of the bars are stationary, and others are moveable. The moveable bars aro
operated by means of stud pins, hooks, and draw bar, some of the bars having a
projecting pin at each end, others having hooks which engage with the pins, so that
the bars are raised in succession, the movement being also in the direction of the
bridge.
The draw bar is operated by means of balance weight, quadrant, and connecting
links, a tappet being employed for raising the balance weight and quadrant.
Another arrangement of apparatus for imparting motion to the grate bars com-
prises overhead shaft and gear operating weighted levers and connecting rod, which
in turn operate second shaft and catch wheel. The latter by connecting give to the
draw bar and grate bars a sudden or jerking motion, thereby the better clearing
the bars and loosing the clinkers.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Proctor in the Great Seal Patent Office on the 16th July
1879.
"
JAMES PROCTOR, Engineer, of 36, Craven Terrace, Burnley, in the County of
Lancaster. IMPROVEMENTS IN MOVEABLE FURNACE BARS, AND IN APPARATUS FOR
MOVING AND WORKING FURNACE BARS."
This Invention relates to improved moving bars for furnaces, and apparatus for
working or operating bars of furnaces.
•
According to one method of construction I employ bars, every alternate bar being
moveable by means of a draw bar. The moveable bars are so attached or connected
to the draw bar as to ensure movement of the bars in the direction of the bridge, so
as to gradually pass the fuel forwards.
Another construction comprises bars occupying an inclined position. A portion
of the bars are stationary, and others are moveable. The moveable bars are
operated by means of stud pins, hooks, and lever or lovers, some of the bars having
a projecting pin at one end, others having hooks which engage with the pins, so
that the bars are raised in succession. The draw bar is operated by means of
quadrant, connecting links, tappet, and spring.
Another arrangement of apparatus for imparting motion to the grate bars com-
prises shaft and gear, operating levers, and connecting rod, which in turn operate
second shaft and catch wheel. The latter by connections give to the draw bar and
grate bars a sudden or jerking motion, thereby the better clearing the bars and
loosing the clinkers.
Such being the nature and object of this my said Invention, in order that the
same may be fully understood, I have hereunto annexed two Sheets of Drawings
illustrative thereof, and have marked the same with figures of reference.
Fig. 1 is a sectional elevation showing bars in position; Fig. 2 is a plan view of
part of Fig. 1; Fig. 3 is a sectional side elevation, and Fig. 4 front section, showing
another construction of bars.
Fig. 5 shows front elevation and arrangement of apparatus for working bars;
Fig. 6 is an end view of Fig. 5.
Fig. 7 is like view in different position.
Figs. 8 and 9 are details or parts detached.
According to this my Invention I employ bars 1, every alternate bar 2 being
moveable, and resting its lug 4 upon the lug 5 of the stationary bars 1. The
moveable bars 2 work on the centres 6, 6, on the bearing or side frame 7, and have
pins 8 which engage with the hooks or slots 9 of the draw bar 10, the draw bar
being worked by the tappet 11 on the shaft 12, which receives motion from the
driving shaft 13 (see Figs. 5, 6, and 7) by connections comprising worm 14, worm
wheel 15, disc 16, connecting lever 17, and slide 171, the slide 17' having fingers
18, 18, which engage with and lift the bowls x, x, carried on one arm 19 of the
boss 20 which works loose upon the shaft 12. Its other arm 19¹ carries catch 19,
which engages with catch wheel 21 keyed on the shaft 12. The spring 22 and
link 23 are also carried by the arm 19'. The fingers 18, 18, of the slide 17' engage
with and lift the bowls x, x, giving a partial rotation to the boss 20 and its
arms 19, 191, upon its shaft 12, charging the spring 22. On the fingers 18, 18, of
the slide 17 clearing the bowls x, x, the spring is released, and the catch 19'
engaging with the ratchet wheel 21 gives to the shaft a sudden partial rotation,
the arms 19, 19', and bowls x, x, falling into position so as to engage with the
fingers 18, 18, on the return stroke of the slide 17', in event of the bars failing to

page_text: return to their places. The bowls and arms also failing to drop into position the
return stroke of the slide will re-place them. As the tappet 11, which is keyed on
the shaft 12, comes round it operates the draw bar 10, pushing the moveable bars 2
upwards and forwards towards the bridge (see dotted lines in Figure 1). When
the beak or greatest throw of the tappet is passed, the bars drop suddenly back
into their vertical or original position. The lugs 4 coming suddenly on to the
lugs 5 of the stationary bars shake the bars, so loosening clinkers and fuel adhering
thereto.
Another construction of bars is shown at Figs. 3 and 4. The bars are in an
inclined position. Every alternate bar (being tilting bars) are carried by shaft 24,
which serves as fulcrum, each tilting bar having at the end near the dead plate a
projecting arm or lug 25, through which a rod 26 passes, the rod being connected
to the draw bar 10 by bell crank or other lever 27. The draw bar 10 is worked by
tappet 11 reversed and apparatus as before described.
Having thus described the nature and particulars of this my said Invention,
together with the manner in which the same is to be or may be performed or carried
into practical effect, I would have it understood that I claim,-
Firstly. The construction and use of bars having lugs 4 and 5, the moveable bars
working on centres 6, as described and illustrated by Drawings.
Secondly. I claim the combination of parts 17, 171, fingers 18, 18, catch 19,
catch wheel 21, and spring 22, for operating the draw bar 10 and grate bars in
manner described.
Lastly. I claim the combination of parts comprising the bell crank lever 27,
lug 25, draw bar 10, and tappet 11, for purposes described, and as illustrated at
Figs. 3 and 4.
In witness whereof, I, the said James Proctor, have hereunto set my hand and
seal, this Eleventh day of July, in the year of our Lord One thousand eight
hundred and seventy nine.
0 Witness,
5
J. E. WALSH,
Mechanical Draughtsman to
Walter Brierley,
Patent Agent,
Halifax and Blackburn.
JAMES PROCTOR. (L.S.)