IMPROVEMENTS IN MACHINERY FOR CHIPPING, RASPING, AND SHAVING DYEWOOD AND OTHER MATERIALS, AND IN APPARATUS CONNECTED THEREWITH
Year: 1851

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
BARKER, of Hulme, near Manchester, in the County of Lancaster, Millwright,
in the employ of Joshua Schofield and Sons, Fustian Dyers and Finishers, of
Cornbrook, near Manchester aforesaid, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent, under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Seventh day of April
now last past, and in the fourteenth year of Her reign, did, for Herself, Her
heirs and successors, givo and grant unto me, the said William Barker, my
exors, admors, and assigns, Her especial license, that I, the said William
Barker, my exors, adñiors, and assigns, or such others as I, the said William
Barker, my exors, adñiors, and assigns, should at any time agree with, and no
others, from time to time and at all times during the term of years therein
expressed, should and lawfully might make, use, exercise, and vend, within
England, Wales, and the Town of Berwick-upon-Tweed, my Invention of
IMPROVEMENTS IN MACHINERY FOR CHIPPING, RASPING, AND SHAVING DYEWOOD
AND OTHER MATERIALS, AND IN APPARATUS CONNECTED THEREWITH;" in which
said Letters Patent is contained a proviso obliging me, the said William
Barker, by an instrument in writing under my hand and seal, particularly
to describe and ascertain the nature of my said Invention, and in what
manner the same is to be performed, and to cause the same to be enrolled in
Her said Majesty's High Court of Chancery within six calendar months next

page_text: and immediately after the date of the said in part recited Letters Patent,
as in and by the same, reference being thereunto had, will more fully and at
large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
William Barker, do hereby declare the nature of my said Invention to
consist,―
First, in applying knives for chipping and shaving dyewood and other
materials to the same face place as the cutters used for rasping, each set of
knives or cutters being easily removed when requisite, thereby rendering the
same machine capable of performing the operations of chipping, shaving, and
rasping.
Secondly, in improved machinery for bringing the dyewood or other
material, towards the face plate in which the knives or cutters aro secured.
Thirdly, in certain self-acting apparatus for grinding the knives and cutters
used in chipping, rasping, and shaving dyewood and other materials.
And in order that my Invention may be fully understood and readily carried
into effect, I will proceed to describe the accompanying Drawings, on which
similar letters and figures of reference are marked upon corresponding pieces.
DESCRIPTION OF THE DRAWINGS.
On Sheet 1, Fig. 1 represents a side elevation of a machine for chipping,
rasping, and shaving dyewood to which my improvements are applied; Fig. 2
is a front elevation of the same, with the feeding trough, shewn in section
through the line A, B, on Fig. 1; and Fig. 3 is a plan view. Fig. 4 is a
section of part of the face plate, shewing the method of securing the cutters
for rasping; Fig. 5 is a section of part of the face plate, shewing the method
of securing the knives for chipping and shaving; and Fig. 6 is a detached
view of one of the knives, shewing the slots for the set screws, by which they
are secured to the face plate.
In Sheet 1, a, a, is the main frame to which are attached the bearing
b, b, of the shaft c; d is the face plate furnished with eight or other
suitable number of rows of holes for the cutters used in rasping. These
holes are marked e, and the cutters, which are seen best in Fig. 4, are
marked f. In the same face plate are also eight or other suitable number
of slots for the knives f¹, which may be used for chipping and shaving
when the cutters e are removed. I wish to remark here that the slots e¹
are shewn in Fig. 2, as being filled up with pieces of cast-iron because
the cutters c are supposed to be at work. g is the trough into which the
dyewood or other material is put; and h is a sliding block which is mounted

page_text: on four wheels i running in grooves in the sides of the trough. The shaft ; is
supported in bearings on the sliding block, and has a worm wheel k fitted on
it near one end; this wheel is connected to the shaft by means of a groove and
key, the object of which will be explained hereafter. On the shaft j are fixed
the two pinions, which gear into the racks m, fixed to the sides of the
trough. A slow rotary motion is imparted to the worm wheel k by means of
the friction disk n on the shaft c, in the following manner:-The disk n gives
motion to the friction pulley o on the shaft p, on which shaft is fixed the bevil
pinion q, taking in the wheel on the diagonal shaft &, which revolves in
bearings attached to the trough g. The shaft s has a groove extending from
one bearing to the other, and into this groove a key from the worm t enters,
thereby communicating the rotary motion from the shafts to the worm t,
which is supported by the brackets u fixed to the sliding block h. The sliding
block is moved at a greater or less velocity by varying the position of the
friction pulley o on the shaft p, so as to bring the pulley nearer to or further
from the centre of the disc n; this is accomplished by making the shaft p
hollow, and by placing a screw which takes into a screw nut fixed to the friction
pulley in the hollow part of the said shaft p. The end of the screw is made
square to receive a handle, which is turned round when the position of the
pulley o has to be changed. On the shaft j is fixed a little drum, to which
is attached one end of a chain v; this chain after being guided over another
drum-w fixed on a shaft, supported in bearings at the end of the trough g, is
attached to a weight x, which serves as a counterpoise to the sliding block h.
The machine is now supposed to be at work, motion being imparted. to the
shaft c from the steam engine, or other first mover, and the sliding block h
is gradually moving down the trough g and bringing the dyewood, to bo
rasped in contact with the face plate d; as soon, however, as the elbow lever, y,
which hinges on a stud in the sliding block, comes in contact with the stop,
the worm wheel k is drawn out of gear with the worm t into the position
shewn by dotted lines in Fig. 2, and the motion of the sliding block is
arrested. The attendant by turning the small fly wheel at the end of the
shaft j, brings the sliding block h back again to the upper end of the trough,
and by acting on the lever y draws the worm wheel k again into gear with
the worm t, ready for commencing a fresh load. I also propose to give motion
to the sliding block h by means of a screw working in the same bearings
as the diagonal shaft s; this screw would take into a portion of a nut fitting in
a piece projecting from the sliding block h; by this means the worm t and
worm wheel k would be dispensed with, but the shaft j and pinions would be
required for bringing the sliding block back when a fresh load was put into

page_text: the trough. In order to stop the downward motion of the sliding block when
it arrives near the face plate, the lever y would in this case be made to lift the
portion of nut above referred to out of gear with the screw. When this
machine is required for chipping and shaving dyewood or other materials, the
cutters fare removed, and the knives f³ are secured into the slots e' by means
of set screws, as seen in section in Fig. 5. As it is generally requisite to move
the sliding block h at a greater speed when the machine is used for chipping
and shaving, the attendant by turning the screw in the hollow shaft p brings
the friction pulley o as much further from the centre of the disc n as the
nature of the material under operation requires.
In Sheet 2, Fig. 7 is a front elevation of a grindstone, to which my
improved self-acting apparatus is applied for grinding the knives and cutters
used in the machine herein-before described with reference to Sheet 1. Fig. 8
is another elevation, and Fig. 9 is a plan view of the same. In these views
C is the main frame, and D the grindstone, to which motion is given from the
shaft E by the wheel and pinion shewn by red circles in Fig. 7, or in any
other suitable way. F, F, are two standards bolted to the frame C, in such
wise that they can be secured nearer to the centre of the grindstone when the
same diminishes in diameter. In each of the standards F is a slot to receive
the end of the cross piece G, which is supported by the screws II, fitting in
the upper part of the standards and furnished with bevil pinions, which gear
into similar pinions on the cross shaft I. The cutters to be ground are placed
in recesses made to receive them in the plate J, the under part of which has
V grooves fitting on the cross piece G. The plate J is broad enough to con-
tain four cutters side by side; these cutters are held in their places by set
screws K, and each cutter is acted upon by one of the pieces L, which termi-
nate in screws furnished with large milled-headed nuts T. These nuts are
supported by and work in the bearings at the lower end of the plate J, as seen
best in Fig. 9. A lateral to-and-fro motion is given to the plate J by means
of a strap M passing over the end of the shaft of the grindstone and then over
the pulley N, which is fixed on the short shaft N¹, to which is also fixed the
worm O, gearing into the pinion P; this pinion has a boss with a groove in it
fitting into a swivel bearing, which hinges on the bearing of the shaft N', and
the square shaft Q passes through a square hole in the boss of the pinion P.
The other end of the shaft Q is supported by another swivel bearing connected
to the cross piece G, and to the end of the shaft Q is fixed to a crank R, to
which is jointed one end of a link S, the other end of the said link being
attached to the plate J; by this means a constant to-and-fro motion is given
to the cutters, and the surface of the grindstone is consequently worn away

page_text: evenly. In proportion as the grindstone diminishes in diameter, the attendant
by turning the handle I' lowers the cross piece G; the standards F are also
moved nearer to the centre of the stone, and by these means the cutters and
knives can always be ground to the same angle, which is essential for the
proper working of the machine herein-before described and shewn in Sheet 1.
The shaft Q is supported in swivel bearings, as before mentioned, to admit of
the shaft working when in a diagonal position, which it assumes when the
cross piece G is lowered to suit the diameter of the grindstone.
Having thus described the nature of my Invention, and the manner in
which the same is to be carried into effect, I would have it understood that I
do not confine myself to the exact details I have described, so long as the
peculiar character of the Invention be retained; but what I claim is,-
First, the application of knives for chipping and shaving dyewood and other
materials to the same face plate as the cutters used for rasping.
Secondly, I claim the improved machinery as shewn and as described for
bringing the dyewood or other materials in contact with the face plate to
which the knives or cutters for chipping, rasping, and shaving are attached.
And, lastly, I claim the apparatus for grinding the knives and cutters used
in machinery for chipping, rasping, and shaving dyewood and other materials.
In witness whereof, I, the said William Barker, have hereunto set
my hand and seal, this Second day of October, in the year of our Lord
One thousand eight hundred and fifty-one.
AND BE IT REMEMBERED, that on the Second day of October, in the
year of our Lord 1851, the aforesaid William Barker came before our said
Lady the Queen in Her Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stamped according to the
tenor of the Statute made for that purpose.
Talled the Sith don of Octalian in the