IMPROVEMENTS IN CARDS FOR CARDING COTTON AND OTHER FIBROUS SUBSTANCES
Year: 1855

page_text: LETTERS PATENT to William Spence, of 50, Chancery Lane, in the County
of Middlesex, Patent Agent, for the Invention of "IMPROVEMENTS IN
CARDS FOR CARDING COTTON AND OTHER FIBROUS SUBSTANCES."-A communi-
cation from Désiré Ambroise Crignon, of No. 31, Rue St. Julien, Rouen
(Seine Inférieure), in the Empire of France. Manufacturer of Cards.
PROVISIONAL SPECIFICATION left by the said William Spence at the
Office of the Commissioners of Patents, with his Petition, on the 5th
October 1855.
I, WILLIAM SPENCE, of 50, Chancery Lane, in the County of Middlesex,
Patent Agent, do hereby declare the nature of the said Invention for "IM-
PROVEMENTS IN CARDS FOR CARDING COTTON AND OTHER FIBROUS SUBSTANCES,"
(being a communication from Désiré Ambroise Crignon, of No. 31, Rue St.
Julien, Rouen (Seine Inférieure), in the Empire of France, Manufacturer of
Cards), to be as follows:-
This Invention consists in forming the transverse part of the staple or wire
tooth with one or more curvatures or bends, instead of being in a straight line,
as usual; and in forming in the leather, or other suitable material constituting
the back of the card, in addition to the ordinary holes for the sides of the staple
or wire tooth to pass through, a cavity adapted to the particular curvature

page_text: or curvatures in such transverse part of the staple or wire tooth. By this
means, when the tooth of the card is applied to the back thereof, the curved
part of the staple will become imbedded in the material of which the back
is composed; also, by the said form of the transverse part of the staple the
elasticity of the tooth will be increased.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Spence in the Great Seal Patent Office on the
5th April 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
SPENCE, of 50, Chancery Lane, in the County of Middlesex, Patent Agent,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifth day of October, in the year of our Lord
One thousand eight hundred and fifty-five, in the nineteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said William Spence, Her special license that I, the said William Spence,
my executors, administrators, and assigns, or such others as I, the said
William Spence, 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
CARDS FOR CARDING COTTON AND OTHER FIBROUS SUBSTANCES," being a communi-
cation from Désiré Ambroise Crignon, of No. 31, Rue St. Julien, Rouen
(Seine Inférieure), in the Empire of France, Manufacturer of Cards,.upon the
condition (amongst others) that I, the said William Spence, by an instrument
in writing under my hand and seal, 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 Spence, do hereby declare
the nature of the said Invention, and in what manner the same is to be .per-
formed, to be particularly described and ascertained in and by the following
statement, reference being had to the Drawing delineated hereon, and to the
letters and figures marked hereon (that is to say):-

page_text: This Invention of "Improvements in Cards for Carding Cotton and other
Fibrous Substances" consists in forming the transverse part of the staple or
wire tooth with one or more curvatures or bends, instead of being in.a. straight
line, as usual; and in forming in the leather, or, other suitable material consti-
tuting the back of the card, in addition to the ordinary holes for the sides of
the staple or wire tooth to pass through, a cavity adapted to the particular
curvature or curvatures in such transverse part of the staple or wire tooth.
By this means, when the tooth of the card is applied to the back thereof,
the curved part of the staple will become imbedded in the material of which
the back is composed; also, by the said form of the transverse part of the
staple the elasticity of the tooth will be increased.
The precise character of the Invention will be obvious on reference to
Figs. 1 and 2; the former shewing the common form of staple or wire tooth,
and the latter shewing the form according to this.Invention.
a, a, are the ordinary sides or arms of the staples bent to the required angle;
6 is the transverse part, which, it will be observed, is straight in Fig. 1, and
curved or arched in Fig. 2.
The staple (formed as at Fig. 2) when inserted in the back of the card
will not depend entirely for its security on the two holes pierced in the leather,
or other suitable material through which the wire is passed, but it will also be
held by the curved or arched portion thereof, being imbedded in the same,
and lying in a cavity previously made in the leather or other material to
receive it.
Having thus described the nature of the Invention, and in what manner the
same is to be performed, I would remark that the Invention is not confined to
any particular kind of card, being equally applicable to cards for carding
fibrous substances generally; neither is it confined to the use of any particular
material for the back of the card, which may be composed of leather, caout-
chouc, or other suitable material employed for such purpose; neither is it
confined to the particular form of the transverse part of the staple or wire tooth
represented at Fig. 2, as the curved or arched portion thereof may be varied.

page_text: But I claim under this Invention the formation of the staple or wire tooth with
the transverse part (as at b, Fig. 2,) formed with one or more curvatures or
arched portions in it, so as to render it capable of holding the staple by being
imbedded in the card back, as described.
In witness whereof, I, the said William Spence, have hereunto set my
hand and seal, the Fourth day of April, in the year of our Lord One
thousand eight hundred and fifty-six.
Witness,
GEORGE BEDELL COULCHER,
Law Stationer,
50, Chancery Lane.
WILLIAM SPENCE. (L.S.)