A New and Improved Mode of Making or Manufacturing Machines for Cutting Fur from Skins for the Use of Hatters, called the Cant Twist Blades Fur Cutter
Year: 1828

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BARING, of Broad Street Buildings, in the City of London, Merchant, send
greeting.
WHEREAS, in consequence of a communication made to me by a certain
Foreigner residing abroad, I am in possession of an Invention of "A New
and Improved Mode of Making or Manufacturing Machines for Cutting
Fur from Skins for the Use of Hatters, called the Cant Twist Blades Fur
Cutter:" And whereas His present most Excellent Majesty King George the
Fourth, by His Letters Patent under the Great Seal of the United Kingdom
of Great Britain and Ireland, bearing date at Westminster, the Third day of
July, in the ninth year of His reign, did, for Himself, His heirs and successors,
give and grant unto me, the said John Baring, my executors, administrators,
and assigns, His especial licence that I, the said John Baring, my executors,
administrators, and assigns, or such others as I, the said John Baring, my
executors, administrators, or 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, and in all His
Majesty's Colonies and Plantations abroad, the said Invention of "A NEW
AND IMPROVED MODE OF MAKING OR MANUFACTURING MACHINES FOR CUTTING FUR
FROM SKINS FOR THE USE OF HATTERS, TO BE CALLED CANT TWIST BLADES FUR
CUTTER;" in which said Letters Patent is contained a proviso obliging me, the
said John Baring, by an instrument in writing under my hand and seal,

page_text: small fast pullies, fixed on the axle of the main motion shaft l. One of
these bands should be crossed as here shewn, and the other not crossed, so as
to give reverse motions to the feeding rollers. m, m, are cog wheels affixed
to the loose pullies for the purpose of giving a uniformn motion to the feeding
rollers, and n, n, are corresponding cog wheels affixed to the feeding rollers
of the cogs on these loose pullies, the right-hand one gears into a corresponding
cog wheel on the under feeding roller, and the left-hand one gears into a
corresponding cog wheel on the upper feeding roller. The main motion shaft
is formed with two cranks, from each of which a sweep rod o is suspended,
and connected by joints to the treadle p; the main motion shaft is by these
meaus driven by the foot of the workman, and the dead points of action are
overcome by the momentum of the fly wheels 7, 7, affixed to the ends of the
main axle. ; r, are two small pullies on the axle of the cant twist cutter,
which are locked to and revolve with the small balance wheels f. f; and 8, 8,
are two bands passed over the pullies r, r, and the fly wheels q, q, by means
of the rotation of which the cant twist cutters are rapidly driven round the
whole of the machine, being by these means actuated by the foot of the
workman bearing upon the treadle as lathes are commonly driven. 1 is a tin
box, with a semicircular bottom, which I use to put the cut fur into. v is a
tin cover which, when turned down over the cutter, prevents the dust from
flying, and w is the skin about to be shorn.
.. Having now described the various parts of the said machine, it only remains
for me to describe the position in which the cant twist cutter should be placed
with reference to the ledger blade, and the manner of manufacturing the said
cant twist cutter. And first of its position, it should be placed behind the
ledger blade with its centre of motion level with the edge of the ledger blade;
by this means the revolving or cant twist blades are so elevated above the
standing or ledger blade, that in the revolution they have an oblique inclination
or cant upon the standing blade, which gives them a back bevel to the edges
of the cant twist blades, which gives them sharper and better cutting edges;
this elevation or cant of these twist blades puts them in such a position
towards the ledger blades that the shears do not choke in cutting very thick
skins.
And now as to the mode of manufacturing the said cant twist cutters, it is
as follows:-Two steel blades are riveted on two opposite squares of a four-
sided bar of iron, one blade on each square, as shewn at Figure 6, and then
the whole together heated and twisted to form the cutter, as shown at Figure 3.
The blades may extend one or two inches, more or less as may be necessary,
and tempered to a proper cutting temper in the ordinary way; and it is

page_text: evident that, if required, the bar may be made of more than four sides, and
in that case furnished with more blades.
Now whereas, I claim as the Invention aforesaid, the method herein-before
described of manufacturing the cant twist blades, the loose pullies on the
arbors of the twist blades, with the manner of putting them in motion from
the main shaft, and the manner of gearing them on to the feeding rollers;
and such the Invention being, to the best of my knowledge and belief, entirely
new and never before used within that part of His said Majesty's United
Kingdom of Great Britain and Ireland called England, His said Dominion of
Wales or Town of Berwick-upon-Tweed, or in any of His Majesty's Colonies
and Plantations abroad, I do hereby declare this to be my Specification of the
same, and that I do verily believe this my said Specification doth comply in
all respects fully, and without reserve or disguise, with the proviso in the said
herein-before in part recited Letters Patent contained, wherefore I hereby
claim to maintain exclusive right and privilege to the said Invention.
In witness whereof, I, the said John Baring, have hereunto set my hand
and seal, the Second day of January, in the year of our Lord One