Improvements in or relating to Means or Apparatus for Cutting and Grinding Bark, Myrabolan, Valonea, Coal, Bone, Lime, and the like.
Year: 1891

page_text: Date of Application, 12th June, 1891
Complete Specification Left, 8th Mar., 1892-Accepted, 9th Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in or relating to Means or Apparatus for Cutting
and Grinding Bark, Myrabolan, Valonea, Coal, Bone, Lime, and
the like.
I, JOSEPH HALL, of the Burley Engine Works, Leeds, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in mills and disintegrators such as are
employed for cutting and reducing bark, myrabolan, valonea, coal, bone, lime, and
the like; and its object is to produce a machine easily driven which is capable of
producing better work at a less cost than can be obtained from machines of ordinary
construction.
According to this invention the cutting and feed mechanism may, firstly, either
be mounted over a reducing mill; or secondly, be combined with a disintegrator
of ordinary construction; or thirdly, the feed mechanism may be combined with.
cutting and reducing mechanism (to be hereafter described) arranged within a
disintegrator; or fourthly, the cutting mechanism may be used alone.
An
The first part of this invention may consist of an ordinary and well known form
of bark mill over which is fixed the improved cutting apparatus consisting of
revolving cutters of cylindrical form, and by preference slightly spiral, arranged at
the breast of the feed trough. The feed trough is provided with a fixed or move-
able bed. The feed rollers are made adjustable-by any well known means-and
parallel to the revolving cutters; and the said rollers are arranged to have a
variable feed whereby longer or shorter lengths of material may be cut.
adjustable mouthpiece or its equivalent is also provided for rigidly holding the
material operated upon between the feed rollers and the cylindrical cutters 80
that the material can, in some cases, be cut sufficiently fine to be used at once
without requiring further manipulation. Motion is imparted to the above described
parts through suitable pulleys and gearing, which may be thrown in and out of
gear by ordinary means so that either the inill or the cutting and feeding
mechanism may be worked independently of the other, or simultaneously. The
material after being cut by the cylindrical cutters may be allowed to fall into the
mill; or when the cutting and feeding mechanism are alone worked the material
is conducted away by any suitable means.
Secondly. The herein described cylindrical cutters, fixed or moveable feed bed
and trough may in some cases be combined with a disintegrator of ordinary con-
struction. Or thirdly, the fixed or moveable feed bed and trough may be combined
with a disintegrator provided with two discs arranged to face each other and to
revolve in opposite directions. At or near the circumference of both discs is a
series of projections (facing each other) of suitable form or shape for reducing the
material as it passes from a point near the centre to the circumference. The centre
part of one of the discs is provided with arms on which are mounted cutters, in
which case I do not employ the herein before mentioned cylindrical cutters, but
pass the material over the bed and through the feed rollers to the cutters on the
said arms, or the material may be fed directly into the machine without the aid of
feed rollers, bed, or trough. The bark (or other material) after being cut drops
between the faces of the revolving discs and is reduced by the projections as it
passes to the circumference. After being reduced the material passes out either at
the periphery or side of the disintegrator.
Dated the Eleventh day of June 1891.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Means or Apparatus for Cutting
and Grinding Bark, Myrabolan, Valonea, Coal, Bone, Lime, and
the like.
I, JOSEPH HALL, of the Burley Engine Works, Leeds, in the County of York,
Engineer, 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 mills, and disintegrators, such as are
employed for cutting and reducing, bark, myrabolan, valonea, coal, bone, lime and
the like; and its object is to produce a machine easily driven which is capable of
producing better work at less cost than can be obtained from machines of ordinary
construction.
According to this invention the cutting and feed mechanism may, firstly, either
be mounted over a reducing mill, or secondly, be combined with a disintegrator of
ordinary construction; or thirdly, the feed mechanism may be combined with
cutting and reducing mechanism (to be hereafter described) arranged within a
disintegrator; or fourthly, the cutting mechanism may be used alone.
In the drawings:
Figs. 1. and 2. are respectively a front elevation, and sectional elevation of a
bark mill, with my invention applied.
Figs. 2 and 2 are details with part of my improvements applied.
Figs. 3. and 4. are respectively a plan, and end elevation of same.
Fig. 5. a part sectional elevation of disintegrator with feed combined.
Figs. 6. and 7. a sectional elevation of same.
Fig. 8. is a front view and Figs. 9 and 10 are elevations of opposite ends of a
cutting machine with my improvements applied.
Fig. 11 an elevation of travelling feed bed for same.
Like parts in all the views are marked with the same letters of reference.
A is a bark mill which may be of ordinary construction, or the base of the cone a
of the machine may be provided with a series of loose cutters or segments al having
fine teeth thereon; and the cutters or segments may be bolted in position as shown
at Fig. 2. Also a similar arrangement of cutters or segments a* may be provided
for the cone casing a² as shown at Fig. 2. The segments a', a* may be prevented
from slipping or moving out of position by suitable stops. By this arrangement
the segments or loose cutters may be readily removed for sharpening or renewal
thereby ensuring better work being produced.
Over the bark mill is fixed the cutting apparatus constructed as follows:-To the
periphery of the discs b, mounted on the shaft ', is or are fixed any desired number
of cutters B. B, two of such cutters are shown in the drawings. These cutters are
of suitable width, and may be fixed slightly spiral, and arranged to work at the
breast of the feed trough C. At the breast of the trough C may also be provided
a fixed steel plate 2 to form a cutter against which the cutters B work. The
trough C. may be provided with a fixed or travelling bed c¹ (see Figs. 1 to 5
and 11) of ordinary construction, but to this particular form of travelling bed I
lay no claim, except when used in combination with other parts of my invention.
The feed rollers D. D, may be made adjustable by any well known means--and
parallel to the revolving cutters B. B, and the said rollers D. D. are arranged to
have a variable feed given to them by means of the change wheels F. F, or their
equivalents, whereby longer or shorter lengths of material may be cut.
adjustable mouthpiece E, or its equivalent, is also provided and works in slide e
and it is employed for rigidly holding the material operated upon between the feed
rollers D, D and the cylindrical cutters B. B so that the material can in some
cases, be cut sufficiently fine to be used at once without requiring further
manipulation.
An

page_text: To readily adjust the mouthpiece E and upper feed roller D to its work the said
parts are connected to weighted lever or levers G fulcrumed at g to the frame-
work by levers H or their equivalents. The lower ends of levers H are connected
together by a cross shaft on which the weighted levers G rest whilst, the upper
ends of the said levers H are attached to the axles of the rollers D.
Motion from any suitable source, is imparted to the above described parts through
pulleys I. I and gearing J. J, K K³, which may be thrown in and out of gear by
ordinary means so that either the mill, or the cutting and feeding mechanism may
be worked independently of the bark mill, or simultaneously.
That is to say, provision is made whereby when the bevel pinion K' is thrown
out of gear with bevel wheel K mounted on the upper end of cone shaft k when it
is required to stop the working of the bark mill A. But when it is desired to stop
the action of the cutting and feeding mechanism, and to work the bark mill alone,
then the bevel pinion K is put into gear with bevel wheel K and the spur pinion J¹
thrown out of gear with spur wheel J. When pinions J, K, are in gear with
their respective wheels then both the cutting and feeding mechanism, and the bark
mill inay be worked simultaneously. The material after being cut by the cylindrical
cutters B. B. may be allowed to fall into the bark mill through spout a*, or when
the cutting and feeding mechanism are alone worked, the material may be conducted
away by any suitable means.
Secondly. The herein described cylindrical cutters B. B, fixed or moveable feed
bed c¹ trough C, adjustable feed rollers D. D, mouthpiece E, weighted lever G., and
levers H, may in some cases be combined with a disintegrator L of ordinary or
suitable construction as shown at Fig. 5. Or thirdly, the said fixed or moveable
feed bed c¹, feed rollers D, D, mouthpiece E, weighted lever G, and levers H may
be combined with a disintegrator L, as shown at Figs. 6 and 7 provided with two
discs, mounted on shaft arranged to face each other, and made to revolve in
opposite directions by any well known means, such as for instance by means of
pulley on shaft . Through the boss of disc l, may be passed the hub or
sleeve cast or fixed to disc *. On the said sleeve may be mounted a pulley 1.
At or near the circumference of both discs is or are cut or formed a series of
projections or serrations 15 (facing each other) of suitable form or shape for
reducing the material as it passes from the spout a into and between the discs
preferably near their centres so as to fall to their circumference. The centre part
of one of the discs is provided with arms on which are mounted cutters ; in
which case I do not employ the herein before mentioned cylindrical cutters B. B,
but pass the material over the bed and through the feed rollers D, D to the
cutters on the said arms, or the material may be fed directly into the machine
without the aid of feed rollers, bed or trough.
Motion may be imparted to the lower feed roller D from a worm 1° on shaft 12
through a worm wheel, and, by spur gearing to the feed roller.
The bark (or other material) after being cut drops into space between the faces
of the revolving discs 1, 1, and is reduced by the projections as it passes to the
circumference. After being reduced the material passes out either at the
periphery at or at side of the disintegrator.
Fourthly. At Figs. 8. 9. and 10. I have shown the herein described trough C,
bed (fixed or travelling) c', feed rollers D. D, mouthpiece E, weighted lever G,
levers H and spur gearing F, F, J J applied to a cutting machine provided with
cylindrical and spiral cutters B, B capable of being worked by hand or power.
When the machine is work by hand a handle m may be fixed to the fly wheel M
mounted on shaft or when driven by power fast and loose pulleys I I may be
mounted on the opposite end of shaft b.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The improved construction of a machine for the purposes described having

page_text: means for varying and adjusting the feed, cutting, or grinding, or reducing, or
disintegrating, substantially as described with reference to Figs. 1 to 11.
2. The combination of the trough C and fixed or travelling bed c¹ with the
variable feed rollers D. D, and mouthpiece E, said parts D and E being capable of
adjustment substantially as herein set forth and illustrated.
3. The application and use of the means for varying the feed and for adjusting
the feed rollers D D and mouthpiece E substantially as described with reference to
Figs. 1 to 10.
4. The application and use of the cylindrical cutters B. B, substantially as
described.
5. The combination of the cylindrical cutters B, B, trough C, bed c¹, adjustable
and variable feed rollers D. D, and mouthpiece E, and parts connected therewith,
with a bark mill or machine for cutting or grinding, or reducing or disintegrating
bark, myrabolan, valonea, coal, bone, lime and the like, substantially as described
with reference to Figs. 1 to 5 and 8 to 11.
6. The improved construction of machine for the purposes described, having
means for feeding, and for cutting and disintegrating the material substantially as
described with reference to Figs. 6 and 7.
7. The combination of the discs 1, 1x facing each other and rotating in opposite
directions having cutting or grinding projections or serrations arranged circum-
ferentially and facially thereon and armed with or without the cutters 1', with the
feed mechanism substantially as described with reference to Figs. 1 to 10.
8. The improved construction and arrangements of machinery employed for
cutting, grinding, and disintegrating bark, myrabolan, valonea, coal, bone, lime, and
the like, substantially as and working as herein before described and shown.
Dated this Seventh day of March 1892.