MACHINERY FOR CUTTING CLOTH and othER MATERIALS."
Year: 1874

page_text: LETTERS PATENT to Robert Bell Sanson, of Globe Road, in the County
of Middlesex, Engineer, for the Invention of
MACHINERY FOR CUTTING CLOTH and othER MATERIALS."
IMPROVEMENTS IN
MACHINERY FOR CUTTING CLOTH AND OTHER MATERIALS.
PROVISIONAL SPECIFICATION left by the said Robert Bell Sanson at
the Office of the Commissioners of Patents, with his Petition, on the
24th March 1874.
I, ROBERT BELL SANSON, of Globe Road, in the County of Middlesex,
Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN MACHINERY FOR CUTTING CLOTH AND OTHER MATERIALS,” to
be as follows:-
My Invention relates to machinery for cutting cloth, wood, and other
materials by means of an endless band, either plain or toothed, passed
over pulleys, and driven by steam or otherwise.
The said Invention consists in the peculiar micans adopted for giving
the required tension to the said band to compensate for its expansion

page_text: and contraction in working in combination with such a construction of
the machine frame as will afford great space for the passage and
manipulation of the cloth or other material being operated upon in the
machine.
Endless band machines for cutting cloth or wood have been heretofore
provided with special springs and other appliances to compensate for the
expansion and contraction of the band or saw, but my Invention is
distinct from any of these, and enables me to dispense with all such
springs and other like means for effecting the desired purpose.
The means which I adopt are as follows:-I construct my improved
machine with a long arm of cast iron or other suitable metal extending
over the plate or table whercon the work is placed. This arm carries
one of the pulleys over which the endless cutting band or blade is
passed, and the sectional area of the metal of the said arm is so pro-
portioned to its length and to the work which the machine has to
perform that while strong enough to give the required support to the
endless band the said arm will yield or spring as far as is required to
compensate for the expansion and contraction of the said endless blade
or band from variations of its temperature or from any sudden strains
or shocks to which it may be exposed in working.
The said endless band or blade is passed over three pulleys, onc at the
extremity of the spring or clastic arm, as above described, one below the
table, and one at the back of the frame. The clastic arm may therefore
be made of any desired length so that I can obtain a large space under
'the said arm for the passage of the work, which may be manipulated
with great freedom to move it into any position while being cut. This
capability of adjusting the work into any required position in connection
with the above described simple and inexpensive means for maintaining
.the
proper tension of the endless band or blade will enable me to supply
a machine for cutting cloth which will be found more efficient, con-
venient, and durable, and at the same time much less expensive than
any machines heretofore known or used for this purpose.
I may combine with these improvements. any ordinary or known

page_text: In some instances I construct my improved machine with the bearings
of the driving wheel shaft moveable so that the said driving wheel may
be adjusted instead of the aforesaid pulleys.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Robert Bell Sanson in the Great Seal Patent Office
on the 14th September 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, ROBERT
BELL SANSON, of Globe Road, in the County of Middlesex, Engincer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the 24th day of March, in the year
of our Lord One thousand eight hundred and seventy-four, in the thirty-
seven year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Robert Bell Sanson, Her special
licence that I, the said Robert Bell Sanson, my executors, adminis-
trators, and assigns, or such others as I, the said Robert Bell Sanson,
exccutors, administrators, and assigns, should at any time agree with
and no others, from time to time, and at all times thereafter during
the term therein expressed, should and lawfully might make, usc,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IM-
PROVEMENTS IN MACHINERY FOR CUTTING CLOTH AND OTHER MATERIALS," upon
the condition (amongst others) that I, the said Robert Bell Sanson, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same to be filed in the Great Scal
Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that I, the said Robert Bell Sanson, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement:-
Fig. 1 of the accompaning Drawing is an elevation of the machine

page_text: shewing the endless band, saw, or knife A, passing over the guide
pullics B, C, and the adjustable driving wheel D. The pulley B is fixed
to the end of the spring arm. E, which is so 'constructed as to give way
before any sudden shock or strain, and the driving wheel D is fixed
upon a slide F so that the wheel may be moved to compensate for the
different lengths of the band and the various tensions roquired.
shewing the endless band, saw, or knife A, passing over the guide
pullics B, C, and the adjustable driving wheel D. The pulley B is fixed
to the end of the spring arm. E, which is so 'constructed as to give way
before any sudden shock or strain, and the driving wheel D is fixed
upon a slide F so that the wheel may be moved to compensate for the
different lengths of the band and the various tensions required.
Fig. 2 is a plan of the machine.
Fig. 3 is a sectional view through the line G, G, on Fig. 1 of the
slide, by which the driving wheel D is adjusted.
Having now described my for. "Improvements in Machinery for
Cutting Cloth and other Materials," I claim as the Invention secured
to me by Letters Patent aforesaid,―
First. In a machine for cutting cloth and for other like purposes,
supporting one of the band wheels or pulleys upon an clastic or spring
arm constructed and arranged as herein set forth.
0
Second. Providing the said machine with an adjustable driving wheel
as herein set forth and for the purpose specified.
In witness whereof, I, the said Robert Bell Sanson, have hereunto
set my hand and scal, this 14th day of Seper, 1874.