IMPROVEMENTS IN COVERING TOP ROLLS OF CARDING, SPINNING, AND TWISTING MACHINES
Year: 1872

page_text: ETTERS PATENT to Alexander Melville Clark, of 53, Chancery Lane,
in the County of Middlesex, Patent Agent, for the Invention of
"IMPROVEMENTS IN COVERING TOP ROLLS OF CARDING, SPINNING, AND
TWISTING MACHINES."-A communication from abroad by Isaac
Lindsley, of Pawtucket, and William Lewis Bartlett, of Valley Falls,
both in the County of Providence, State of Rhode Island, United
States of America.
PROVISIONAL SPECIFICATION left by the said Alexander Melville
Clark at the Office of the Commissioners of Patents, with his
Petition, on the 7th March 1872.
I, ALEXANDER MELVILLE CLARK, of 53, Chancery Lane, in the County
of Middlesex, Patent Agent, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN COVERING TOP ROLLS OF CARDING, SPINNING,
AND TWISTING MACHINES," to be as follows:-

page_text: machinery for carding, spinning, or twisting cotton, wool, flax, silk, or
other fibrous material with a covering that is equal in quality throughout
and entirely seamless. The manipulation of the fibrous substances can
thereby be carried on with a far greater degree of exactness and thorough-
ness than heretofore. At present the covering of such top rolls is made of
leather, which it is evident cannot be applied without a seam. The sewed
part however being harder than the other, or under all circumstances of a
-different degree of hardness; affects the fibre acted upon in a different
manner to that in which the non-stitched or sutured main part of the
covering affects the same. The fibre is therefore not uniformly treated,
and consequently not of that even and perfect quality which would make
it most valuable in market.
The present Invention consists in providing the top rolls of the kinds
of machinery herein-before denominated with a flexible composition
covering, which is moulded or otherwise formed without seam or joint of
any kind, and uniform in structure, consistency, and thickness throughout.
Such covering can be formed directly on the roll to which it is to adhere,
or separate therefrom, and subsequently attached. It can be used with
or without an inner support or cushion of canvas or other fabric, being
at its ends securely cemented or otherwise fastened to the metallic
top roll.
The covering is by preference composed of the following ingredients :-
Glue or gelatine, glycerine, nut gall, white zinc or powdered white lead,
wood naptha, and linseed oil These ingredients are first mixed and
reduced by boiling to a syrup-like consistency. The composition can
then be moulded in form of a continuous tube, and drawn on the end of
the boss or roll and cemented at the ends like leather, or it can be
formed into flat sheets and lapped previous to coagulation around
the roll when the lap edges will unite and form one mass, or it can be
cast around the boss or top roll, the same being first painted or prepared
to hold the covering to the roll, and thus to dispense with the canvas
support or cushion next to the roll. The covering can be furthermore
made of suitable color. Equivalents of the ingredients above specified
may be used with substantially the same effect.

page_text: MELVILLE CLARK, 01 95, Unancery Lane, in the County of Middlesex,
Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of March, in the year
of our Lord One thousand eight hundred and seventy-two, in the
thirty-fifth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Alexander Melville Clark, Her special
licence that I, the said Alexander Melville Clark, my executors, adminis-
trators, and assigns, or such others as I, the said Alexander Melville
Clark, my executors, 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, use,
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 COVERING TOP ROLLS OF CARDING, SPINNING, AND TWISTING
MACHINES," a communication to me from abroad by Isaac Lindsley, of
Pawtucket, and William Lewis Bartlett, of Valley Falls, both in the County
of Providence, and State of Rhode Island, United States of America, upon
the condition (amongst others) that I, the said Alexander Melville Clark,
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 Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Alexander Melville Clark, do hereby
declare the nature of the said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the accompanying

page_text: syrup-like consistency. The composition can then be moulded in form
of a continuous tube and drawn on the end of the boss or roll, and
cemented at the ends like leather, or it can be formed into flat sheets
and lapped previous to coagulation around the roll when the lap
edges will unite and form one mass, or it can be cast around the boss or
top roll, the same being first painted or prepared to hold. the covering
to the roll, and thus to dispense with the canvas support or cushion a
next to the roll. The covering may furthermore be made of suitable
color.

page_text: the flexible composition covering for the top rolls of carding, spinning,
and twisting machines, prepared substantially as herein specified.
In witness whereof, I, the said Alexander Melville Clark, have
hereunto set my hand and seal, this Fourth day of September,
in the year of our Lord One thousand eight hundred and
seventy-two.
Witness,
JAS. O. DEWEY,
53, Chancery Lane,
-London.
A. M. CLARK: (L.S.)