IMPROVEMENTS IN THE CONSTRUCTION OF CYLINDERS FOR BREAKING UP FIBROUS MATERIALS
Year: 1879

page_text: LETTERS PATENT to William Tatham and William Tweedale Heap, of the
Firm William Tatham & Co., of Vulcan Works, Rochdale, in the County - of
Lancaster, Machine Makers, for the Invention of "IMPROVEMENTS IN THE
CONSTRUCTION OF CYLINDERS FOR BREAKING UP FIBROUS MATERIALS."
Sealed the 16th April 1880, and dated the 27th October 1879.
PROVISIONAL SPECIFICATION left by the said William Tatham and
William Tweedale Heap at the Office of the Commissioners of Patents on the
27th October 1879.
WILLIAM TATHAM and WILLIAM TWEEDALE HEAP, of the Firm William Tatham
& Co., of Vulcan Works, Rochdale, in the County of Lancaster, Machine Makers.
IMPROVEMENTS IN THE CONSTRUCTION OF CYLINDERS FOR BREAKING UP FIBROUS
MATERIALS."
"
Our Invention relates to cylinders of machines for breaking up hard cotton
waste and other fibrous materials, and its object is to obtain strong light cylinders
that will not be easily damaged or liable to get out of truth or balance, and our
Invention consists in making the shell or cylinder of wrought iron or steel plate
bent to the cylindrical form and welded or brazed, so as to form a solid jointless
cylinder of considerable strength and lightness, and our Invention also consists in
forming the arms or arms and rings which carry the shell or cylinder of such
machines of wrought or malleable iron or steel instead of cast iron as hitherto, by
which means much stronger and lighter arms or rings are obtained.
.
The arms or rings and cylinder or shell are or may be made true cylindrically
by rolling and hammering, or by grinding or turning, and the cylinder or shell is
or may be secured to the arms or rings by screws or other means, or by being
heated and then allowed to cool upon the rings or arms and rings. To the peri-
pheries of the cylinders constructed as above described we attach staves or lags of
wood or metal set with steel or other metal teeth, which act to tear or break
cotton waste or other fibrous material to be operated upon upon by such machines.
up
the

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Tatham and William Tweedale Heap in the Great Seal
Patent Office on the 24th April 1880.
WILLIAM TATHAM and WILLIAM TWEEDALE HEAP, of the Firm William Tatham
& Co., of Vulcan Works, Rochdale, in the County of Lancaster, Machine Makers.
'IMPROVEMENTS IN THE CONSTRUCTION OF CYLINDERS FOR BREAKING UP FIBROUS
MATERIALS."
"
Our Invention relates to cylinders of machines for breaking up hard cotton waste
and other fibrous materials, and its object is to obtain strong light cylinders that
will not be easily damaged or liable to get out of truth or balance, and our
Invention consists in making the shell or cylinder of wrought iron or steel plate
bent to the cylindrical form and welded or brazed, so as to form a solid jointless
cylinder of considerable strength and lightness, and our Invention also consists in
forming the arms or arms and rings which carry the shell or cylinder of such
machines of wrought or malleable iron or steel instead of cast iron as hitherto, by
which means much stronger and lighter arms or rings are obtained.
The arms or rings and cylinder or shell are or may be made true cylindrically
by rolling and hammering, and by grinding or turning, and the cylinder or shell is
or may be secured to the arms or rings by screws or other means, or by being
heated and then allowed to cool upon the rings or arms and rings. To the peri-
pheries of the cylinders constructed as above described we attach staves or lags of
wood or metal set with steel or other metal teeth, which act to tear or break up
the cotton waste or other fibrous material to be operated upon by such machines.
Fig. 1 is a longitudinal section, and Fig. a partial end view illustrating the
mode of constructing cylinders according to our Invention.
.
.a, shaft or axis of the cylinder; b, bosses keyed thereon; b¹, arms of malleable
iron or steel, shrunk, screwed, or otherwise secured in or to the bosses b..
The ends of the arms (6') are rivetted to the cylinder c, which is formed of
wrought iron or steel welded or brazed to form a solid cylinder.
To the cylinder (c) wood or metal lags d set with teeth are secured by bolts d',
and also by metal hoops d², which are or may be shrunk on and then further
secured by screws.
To the cylinder small angle pieces e are secured by screws or rivets, and there
is also a disc e¹ secured on each boss (b). and to the angle pieces e and discs e¹;
the end plates e² are secured by screws.
The arms (b) in place of being, secured directly to the cylinder c are or may be
secured to rings carried on the ends of the arms, and the cylinder c is or may be in
this case shrunk on the rings and then secured by screws or rivets. The boss (b),
arms b¹, and ring are or may be made solid if desired.
We have now particularly described the nature of our Invention and the mode
of carrying it into effect, and claim as our Invention,―
Firstly. The construction of cylinders for breaking up fibrous materials of
wrought iron or steel welded or brazed to form a solid cylinder, as herein before
described.
Secondly. The construction of cylinders for breaking up fibrous materials of
solid wrought iron or steel combined with arms of wrought iron or steel, as
herein before described.
Thirdly. The construction and.combination of cylinders (c)) for breaking up
fibrous materials of solid wrought iron or steel, and with wrought iron or steel
arms, and with the lags (d) for the teeth secured by bolts and hoops (d²);
substantially as herein before described and illustrated by the Drawings.

page_text: Fourthly. The construction of cylinders for breaking up fibrous materials when
the arms or arms and rings are formed of wrought iron or steel, substantially as
herein before described.
In witness whereof, we, the said William Tatham and William Tweedale
Heap, have hereunto set our hands and seals, this Twenty third day of
April, in the year of our Lord One thousand eight hundred and eighty.