IMPROVEMENTS IN CARDING ENGINES
Year: 1868

page_text: LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn
Fields, in the County of Middlesex, Gentleman, for the Invention
of "IMPROVEMENTS IN CARDING ENGINES."-A communication from
abroad by Jean Alexandre Edmond Pasquier, of Paris, in the
Empire of France, Spinner.
Sealed the 11th May 1869, and dated the 1st December 1868.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson at
the Office of the Commissioners of Patents, with his Petition, on the
1st December 1868.
I, JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County
of Middlesex, Gentleman, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN CARDING ENGINES," a communication from
abroad by Jean Alexandre Edmond Pasquier, of Paris, in the Empire of
France, Spinner, to be as follows:-
This Invention relates to carding engines employed in spinning
carded wool, and consists in substituting for the annular intervals or
spaces formed by bands of leather which are interposed between the

page_text: rings of card on the doffing cylinder thin metal blades having knife edges
and secured parallel to each other and side by side in a metal frame
which is fixed to the main frame of the carding engine. These thin
blades are disposed nearly vertically in front of the doffing cylinder, and
are caused to enter the cards to a depth of about of an inch, the
length of blade in actual contact with the circumference of the doffer
being about two inches. The length of the "doffer" is thus subdivided
into as many spaces as may be required, without the great loss of working
space attendant upon the old system. The doffing comb may be made
in two portions, an upper and a lower one, the latter works between the
fixed separating blades above referred to, and removes one-half the
wool, whilst the former takes off what remains after the action of
the first.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Henry Johnson in the Great Seal Patent 1
Office on the 1st June 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN.
HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Mid-
dlesex, Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her 2
Letters Patent, bearing date the First day of December, in the
year of our Lord One thousand eight hundred and sixty-eight, in the
thirty-second year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said John Henry Johnson, Her
special license that I, the said John Henry Johnson, my executors, 2
administrators, and assigns, or such others as I, the said John Henry
Johnson, my executors, administrators, or 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 makc,
use, exercise, and vend, within the United Kingdom of Great Britain 3
and Ircland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN CARDING ENGINES," a communication from abroad by
Jean Alexandre Edmond Pasquier, of Paris, in the Empire of France,
Spinner, upon the condition (amongst others) that I, the said John
Henry Johnson, my exccutors or administrators, by an instrument 3

page_text: 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 John Henry Johnson, 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
Drawings, and to the letters and figures marked thereon, that is to
say:-
The said Invention relates to carding engines employed in spinning
carded wool, and consists in substituting for the annular intervals or
spaces formed by bands of leather which are interposed between the
rings of card on the toffing cylinder thin metal blades having knife
edges and secured parallel to cach other and side by side in a metal
frame which is fixed to the main frame of the carding engine. These
thin blades are disposed nearly vertically in front of the doffing cylinder,
and are caused to enter the cards to a depth of about of a inch, tho
length of blade in actual contact with the circumference of the doffer
being about two inches. The length of the "doffer" is thus subdivided
into as many spaces as may be required, without the great loss of
working space attendant upon the old system. The doffing comb may
be made in two portions, an upper and a lower one, the latter works
between the fixed separating blades above referred to and removes
one-half the wool, whilst the former takes off what remains after the
action of the first.
And in order that the said Invention may be fully understood, I shall
now proceed more particularly to describe the same, and for that purpose
shall refer to the several Figures on the annexed Sheet of Drawings; the
same letters of reference indicating corresponding parts in all the
Figures.
Figure 1 of the Drawings is a transverse section of a doffing cylinder,
to which is applied a frame provided with blades forming the divisions
above referred to; Figure 2 is an outside face view of the same; and
Figures 3 and 4 are full size views, shewing one of the blades in side
elevation and transverse section respectively.

page_text: The edge of each blade L, which is cut to a knife edge, is applied on
the "garniture" cards g of the doffer P, which it enters about th of an
inch for a length of from 1 to 2 inches; this blade thus cuts the wool, and
replaces the ordinary intervening leather bands without loss of working
surface. A number of these blades L corresponding to the divisions
required are mounted in a rigid frame C, which is fixed to the frame of
the machine, so that the comb p, which is suitably divided so as to take
such alternate space between the blades, removes half the lower fibres,
leaving the remainder to the comb p', which doffs it at or near the top
part of the doffer P. The blades constituting this system of division are
also applicable to carding engines with one or more feeders. The
biades L herein-before described may be mounted either in the manner
shown in the Drawings, or in any other convenient way.
Having now described and particularly ascertained the nature of the
said Invention, and the manner in which the same is or may be used or
carried into effect, I would observe in conclusion that what I consider
to be novel and original, and therefore claim as the Invention secured
to me by the herein-before in part recited Letters Patent is,―
First. The application and use to and in carding engines of the
blades L disposed and operating substantially as and for the purpose.
herein-before described and illustrated by the Drawings.
Second. The peculiar combination of the blades L, and combs p
and with the doffing cylinder of a carding engine as and for the
purpose herein-before described.
In witness whereof, I, the said John Henry Johnson, have to this
my Specification, set my hand and seal, the Thirty-first day of
May, One thousand eight hundred and sixty-nine.
J. HENRY JOHNSON. (L.S.)