IMPROVEMENTS IN TOP ROLLS FOR SPINNING MA- CHINERY.
Year: 1872

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine,
Lake, & Co., Patent Agents, Southampton Buildings, London, for
the Invention of "IMPROVEMENTS IN TOP ROLLS FOR SPINNING MA-
CHINERY. ."-A communication from abroad by Edwin Freeman, of
Norton, Massachusetts, United States of America.
Scaled the 1st April 1873, and dated the 22nd October 1872
PROVISIONAL SPECIFICATION left by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition,
on the 22nd October 1872.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co.,
Patent Agents, Southampton Buildings, London, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN TOP ROLLS FOR
SPINNING MACHINERY," a communication, to be as follows:-
This Invention consists in a novel covering for top rolls to be used
either as an exterior drawing surface, or as a foundation for the leather
covering ordinarily applied; it is composed of granulated wood, the
particles of which are united with a suitable adhesive substance, and
which may either be applied in sheets to the roll or may be moulded

page_text: thereon; I prefer to use granulated cork wood, or cork dust, the particles
of which are united into a comparatively solid but clastic mass by any
suitable adhesive matter.
In practice it is found, that, say twenty pounds of granulated cork
wood soaked in bisulphide of carbon and combined with five pounds of
virgin caouchouc, rendered fluid by the same solvent, applied in suffi-
cient quantity to the mass to render it sufficiently plastic, will produce a
compound well suited for the purpose. It should be evenly spread
while soft upon any suitable light woven textile fabric of flax or cotton,
and while drying subjected to sufficient pressure to secure the proper
solidity. After having been so prepared the "cork compound" is
cut into strips and wound squarely upon the metallic surface of the
roller, and secured thereto with any adhesive cement used in the art of
covering rolls with leather.
It has not been deemed essential to combine with the caoutchouc the
mineral matter usually employed in the process of vulcanization; if the
gum should be vulcanized, however, it would not necessarily effect the
practical value of the compound. Some of the lighter woods, as for
instance, poplar and white pine may be employed, but the cork wood is
much to be preferred, and is as cheap as any other, as the refuse of
bottle cork establishments can be procured in desirable quantities at a
low cost. Among the several varieties of the article known as
"kamptulicon" or "cork carpet" there are several kinds well suited to
the purpose, and they can be obtained at a cost so low as to render it
unnecessary even to manufacture the compound expressly for the purpose
of roll covering.
"
In moulding the compound upon the roll it is necessary to havo a
mould made in sections, with which the desired degree of pressure can
be attained. To secure unity between the compound to be moulded and
the metal a wrapper of twine saturated in the solvent is first applied.
Whether moulded or applied in the sheet form it is desirable always to
put the roll thus covered into a lathe, and to grind off the covering to a
uniform thickness.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Robert Lake in the Great Seal Patent
Office on the 21st April 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-second day of October, in the
year of our Lord One thousand eight hundred and seventy-two, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said William Robert Lake, Her special
licence that I, the said William Robert Lake, my executors, adminis-
trators, and assigns, or such others as I, the said William Robert Lake,
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
"IMPROVEMENTS IN TOP ROLLS FOR SPINNING MACHINERY," a communication
to me from abroad by Edwin Freeman, of Norton, Massachusetts,
United States of America, upon the condition (amongst others) that I,
the said William Robert Lake, 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 William Robert Lake, 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
Drawing, forming a part of this Specification:-
This Invention consists in a novel covering for top rolls to be used
either as an exterior drawing surface or as a foundation for the leather
covering ordinarily applied, it is composed of granulated wood, the
particles of which are united with a suitable adhesive substance, and

page_text: which may either be applied in sheets to the roll or may be moulded
thereon. I prefer to use granulated cork wood or cork dust, the particles
of which are united in a comparatively solid but clastic mass by any
suitable adhesive matter.
Figure 1 represents in perspective one of these improved top rollers
provided with a leather covering; Figure 2 represents the same in cross
section; and Figure 3 represents one of the said improved top rollers,
provided wholly with the compound cork covering.
In practice it is found, that, say twenty pounds of granulated cork
wood soaked in bisulphide of carbon and combined with five pounds of
virgin caoutchouc, rendered fluid by the same solvent, applied in
suficient quantity to the mass to render it sufficiently plastic will
produce a compound well suited for the purpose.
It should be evenly
spread while soft upon any suitable light woven textile fabric of flax or
cotton, and while drying, subjected to sufficient pressure to secure the
proper solidity. After having been so prepared the "cork compound"
is cut into strips and wound squarely upon the metallic surface of the
roller, and secured thereto with any adhesive cement used in the art of
covering rolls with leather.
It has not been deemed essential to combine with the caoutchouc the
mineral matter usually employed in the process of vulcanization; if the
gum should be vulcanized however it would not necessarily affect the
practical value of the compound. Some of the lighter woods, as for
instance, poplar and white pine may be employed, but the cork wood is
much to be preferred, and is as cheap as any other, as the refuse of
bottle cork establishments can be procured in desirable quantities at
low cost. Among the several varictics of the article known as
kamptulicon" or cork carpet" there are several kinds well suited to
the purpose, and they can be obtained at a cost so low as to render it
unnecessary even to manufacture the compound expressly for the purpose
of roll covering.
"
86
In moulding the compound upon the roll, it is necessary to have a
mould made in sections, with which the desired degree of pressure can
be attained. To securé unity between the compound to be moulded and
the metal, a wrapper of twine saturated in the solvent is first applied.

page_text: Whether moulded or applied in the sheet form, it is desirable always to.
put the roll thus covered into a lathe, and to grind off the covering to a
uniform thickness.
Cork wood in sliced sheets, has hitherto been employed with good
results, both as an exterior covering, and as a foundation for leather;
but as the cork wood so used is necessarily of the most expensive quality,
and as the picces must be specially selected, it involves considerable
expense, which my Invention obviates. Moreover, however carefully
cork may be selected, it is difficult to avoid the hard solid spots which
frequently occur therein, and any lack of uniformity in the density of a
top roll covering will result in its imperfect operation. By granulating
the woody matter and then incorporating it into a comparatively solid
well mixed mass, with adhesive matter, an average degree of clastic
solidity is attained, which is practically more uniform in its character
than the natural cork wood can possibly be.
Having thus fully described the said Invention as communicated to
me by my foreign correspondent, and the manner of performing the
same, I wish it understood that I claim, a top roller for spinning, the
covering of which is composed wholly or in part of a layer or layers
of a compound of adhesive gum and granulated cork or other suitable
woody matter as herein described.
In witness whereof, I, the said William Robert Lake, have here-
unto set my hand and seal, this Twenty-first day of April,
in the year of our Lord One thousand eight hundred and seventy-
throo
Witness,
JAMES EDWARDS,
8, Southampton Buildings,
London.
W. ROBT. LAKE. (L.S.)