Improvements in Coke-breaking Machines.
Year: 1899

page_text: Date of Application, 16th Jan.,
1899
Complete Specification Left. 16th Oct.. 1899-Accepted. 18th Nov. 1899
Improvements in Coke-breaking Machines.
I, SAMUEL STEVENSON, trading as Robert Cort and Son, Engineers, &c., of
21, Lower Bland Street, London, S.E., do hereby declare the nature of this in-
vention to be as follows:-
This invention relates to improvements in coke-breakers and has for its prin-
cipal object to enable the wear of the teeth of the cutters or breaking-rolls to
be taken up in a manner more effective than that hitherto employed on such
machines.
A
A coke-breaker fitted with my invention consists of a suitable framework sur-
mounted by a hopper and provided with a shaft driven by a pulley, chain wheel
or other convenient means. This shaft passes across the machine and is pro-
vided at each side thereof with a suitable spur wheel gearing with another
spur wheel secured in suitable bearings to each side or the frame-work.
third spur wheel gearing with the second spur wheel at each side of the machine
is secured to another transverse shaft and along the central portion of this latter
is arranged a number of suitable cutters. By the use of cutters a better result
is obtained than when breaking-rolls or crushers are used. Any other ordinary
arrangement of gear-wheels may however be employed.
To the side frames of the machine are pivoted and secured upright arms
carrying a second roll consisting of a set of cutters capable of meshing with
and intersecting the first set, and these pivoted arms are provided with suitable
guides and locking means. The pivotted arms, as at present constructed, are
approximately of a Y-shape, the pivots being secured at the bottom of the figure
the branches serving to carry the shaft of the adjustable roll and a bracing-stay
or guard respectively.
These adjusting devices may comprise a rod furnished with a screw at each
end and arranged to pass through a boss formed at or about the centre of the
pivotted arm. One end of this rod engages with a pivotted nut secured to the
framework, the other or outer end being furnished with one or more nuts.
Between the outer nut and the boss on the arm is a spiral spring and a suitable
collar is secured on the rod within the inner side of the arm. The swinging arms
may also be braced together by a transverse stay or bolt.
The aforesaid spur-wheels are preferably of 3 sizes, the smallest being mounted
on the first motion shaft, the medium size being the intermediate or second
wheel and driving the largest or third spur wheel which drives the shaft carrying
the one roll or set of cutters.
The diameter of the spur wheels on each side of the machine and that of the
pinions with which they engage are dissimilar so that the peripheral speeds will
vary and the wheels are normally always in gear, but suitable ordinary means
may be provided for their disengagement.
By means of the aforesaid swinging-arms the second roll or set of cutters may
be advanced towards or withdrawn from the fixed roll for working purposes.

page_text: The hopper delivers on to and above the space between the cutter-rolls, and
the remainder of the machine may be of any suitable construction.
The coke after treatment falls upon a screen as usual.
I, SAMUEL STEVENSON, trading as Robert Cort and Son, Engineers, &c., of
21, Lower Bland Street, London, S.E., 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:-
This invention relates to improvements in coke-breakers and has for its prin-
cipal object to enable the wear of the teeth of the cutters or breaking-rolls to
be taken up in a manner more effective than that hitherto employed on such
machines.
My improved coke-breaker produces an exceedingly small quantity of breeze
uniform in character and very free from dust.
On the annexed sheet of drawings, I have shewn an improved coke-breaker
constructed in accordance with my invention, Figure 1 being a half front eleva-
tion of the machine, and Figure 2 being a side or end elevation of the same.
The machine, as will be seen from these drawings, consists of a suitable frame-
work A surmounted by a hopper a and provided with a shaft B driven by a
pulley, chain wheel or other convenient means b. This shaft B passes across
the machine and is provided at one end with a suitable pinion c and at the
other end with a spur wheel C, the pinion gearing with an intermediate spur
wheel D secured in suitable bearings to the side of the framework and arranged
to engage a wheel E. The wheel C engages a wheel driving shaft F and
along the central portion of this latter is arranged a set of suitable cutters ƒ ƒ.
By the use of cutters a better result is obtained than when breaking-rolls or
crushers are used. Any other ordinary arrangement of gear-wheels may, how-
ever, be employed.
To the side frames of the machine are pivotted and secured upright arms G
carrying a second shaft fitted with a set of cutters gg capable of meshing with
and intersecting the first set f f and these pivotted arms G are provided with
suitable guides and locking means. These pivotted arms, as illustrated on the
drawings, are approximately of a Y-shape, the pivots being secured at the bottom
of the figure, the branches G₁ G₁ serving to carry the shaft of the adjustable
roll g, and a bracing stay or guard h respectively.
The adjusting devices each consist of a rod m furnished with a screw at each
end and arranged to pass through a boss formed at or about the centre of the
pivotted arm G. One end of this rod m engages with a pivotted nut n secured
to the framework A, the other or outer end being furnished with one or more
nuts. Between the outer nut and the boss on the arm is a spiral spring o and
a suitable collar is secured on the rod within the inner side of the armı. Each
arm is thus provided with a safety spring to prevent cutters being damaged.
The swinging arms may also be braced together by a transverse stay or bolt h.
The adjustable side arms can be instantly set to cut the coke to any size required;
this arrangement also takes up the wear of the cutters.

page_text: The aforesaid pinion c and gear-wheels 1) E are preferably of three sizes,
the pinion c being mounted on the first motion shaft and being the smallest ;-
the medium size is the intermediate or second wheel D, driving the largest or
third spur-wheel E which drives the shaft carrying the one roll or set of
cutters g 9.
The diameter of the spur wheels on each side of the machine and that of the
pinions with which they engage are dissimilar so that the peripheral speeds of
the cutters will vary; the wheels are normally always in gear, but suitable
ordinary means may be provided for their disengagement.
By means of the aforesaid swinging arms G the second roll or set of cutters g g
may be advanced towards or withdrawn from the fixed set of cutters f f for
working purposes.
The hopper a delivers on to and above the space between the sets of cutters;
the remainder of the machine may be of any suitable construction. The coke
after treatment falls upon a screen p as usual.
The cutters and 9 are preferably of thin steel toothed discs and can be easily
replaced without disconnecting the frame. They are provided with central or
intermediate bosses and are keyed on their respective shafts by means of suit-
able feathers. It will be remarked, also, that the spur wheels are always accu-
rately in gear at whatever position the cutters may be set.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is :-
(1). In a coke-breaking machine, the combination with a cross shaft situated
below the hopper and fitted with cutters, of spring controlled adjustable arms
furnished with a transverse shaft fitted with cutters, the said sets of cutters
meshing together and being rotated inwardly at different speeds, substantially
as and for the purposes described.
(2). A coke-breaking machine fitted with spring-controlled adjustable arms
and intersecting cutters, substantially as described and as illustrated on the
accompanying drawings.
Dad
1
T
1000