IMPROVEMENTS. IN CARDING ENGINES
Year: 1869

page_text: LETTERS PATENT to Jacob Dockray, of Quebec Foundry, Leeds, in
the County of York, Machinist, for the Invention of "IMPROVEMENTS.
IN CARDING ENGINES."
Sealed the 5th November 1869, and dated the 31st May 1869.
PROVISIONAL SPECIFICATION left by the said Jacob Dockray at the
Office of the Commissioners of Patents, with his Petition, on the
31st May 1869.
I, JACOB DOCKRAY, of Quebec Foundry, Leeds, in the County of
York, Machinist, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN CARDING ENGINES," to be as follows:-
My first improvement, which is for effecting a more uniform and
efficient action upon the material to be operated upon, and to equalize
the wear and tear of the clothing, is as follows:-I communicate to the
main cylinder a slow lateral reciprocating motion by which it is made
to act against each of the rollers by and upon which the material acts.
and is acted upon. I effect the lateral motion above named by placing
upon the first feeder shaft, or other shaft moving at a similarly slow rate,

page_text: a cam which communicates the reciprocating motion required through a
lever or levers adjustable so that the amount of oscillation communicated
to the main cylinder and feeder respectively may accord with the work
to be performed.
My second improvement, which is for the purpose of separating the
shives and foreign matter adhering to the true fibre and carried
round by the main and other cylinders, I effect as follows:-I place
below the feeder or feeders, concentric with the main cylinder and
above the first worker, a series of knife-edged bars, adjusted so that
they may be struck by the material above nained, thus throwing off the
shive and foreign matter by the beating action of the main cylinder
in revolving.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Jacob Dockray in the Great Seal Patent Office on
the 10th November 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JACOB.
DOCKRAY, of Quebec Foundry, Leeds, in the County of York, Machinist,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirty-first day of May, in the year of
our Lord One thousand eight hundred and sixty-nine, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto mo, the said Jacob Dockray, Her special licence that I,
the said Jacob Dockray, my executors, administrators, and assigns, or
such others as I, the said Jacob Dockray, my executors, administrators,
and assigns, should at any time agree with, and no others, from timo
to time and at all times thereafter during the term therein exprossed,
should and lawfully might make, use, exercise, and vend, within the
Huited Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for "IMPROVEMENTS IN CARDING ENGINES,"
upon the condition (amongst others) that I, the said Jacob. Dockray,
ny excoutors 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 tho
same was to be performed, and cause the same to be filed in the Great

page_text: Seal Patent Office within six calendar months next and inmediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Jacob Dockray, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement:-
My first improvement, which is for effecting a more uniform and
efficient action upon the material to be operated upon, and to equalize
the wear and tear of the clothing, is as follows:-I communicate to
the main cylinder a slow lateral reciprocating motion by which it
is made to act against each of the rollers by and upon which the
material acts and is acted upon. I effect the lateral motion above
named by placing upon the first feeder shaft, or other shaft moving at a
similarly slow rate, a cam which communicates the reciprocating motion
required through a lever or levers adjustable so that the amount of
oscillation communicated to the main cylinder and feeder respectively may.
accord with the work to be performed.
The second improvement, which is for the purpose of separating
the shives and foreign matter adhering to the truc fibre and carried
round by the main and other cylinders, I effect as follows:-I place
below the feeder or feeders, concentric with the main cylinder and
above the first worker, a series of knife-edged bars, adjusted so that
they may be struck by the material above named, thus throwing off the
shive and foreign matter by the beating action of the main cylinder in
revolving.
And in order that my Invention may be more fully understood
and more readily carried into effect, I will now proceed to describe
the same, reference being had to the accompanying. Drawing,' in
which Figure 1 represents an elevation of my improvements applied*
to a carding engine having the front side removed, made according to
the Specification of a Patent granted to me, and Thomas Greenwood,
and John Baticy, on the Eighth of April One thousand eight hundred
and fifty-ciglit, No. 760, and also according to the Patent granted to
me and the above-named Thomas Greenwood, on the Twenty-ninth
of October One thousand eight hundred and sixty, No. 2643; Figure 2
shows a front elevation and plan of the manner in which the motion
is derived and applied under my first improvement; Figure 3 is an

page_text: elevational section of the method of excluding the air from the cylinder
surface.
On the first feeder shaft a I place à cam or eccentric b, sec
Figure 2, with a clip c thereapon communicating through the rod c',
which is placed upon the stud in one arm of the bell crank
lever, dotted in Figure 1, a second arm having a fork upon it
taking into the ring groove e' upon the main cylinder B. I also
use a third arn, which may be a continuation of the above-named
arm but on the opposite side of the central stud c, having a fork
thereupon, which also takes into the ring groove upon the feeder
shaft, from which the motion is derived. The oscillation thus com-
municated to the main cylinder and first feeder respectively effectually
opens and causes a more uniform distribution of the material over
the entire carding or working surfaces, and further secures a more
equal wear and tear of the cards or clothing. The amount of oscil-
lation communicated may be varied as required by shifting the stud ²
above named nearer to or farther from the centre. It is obvious that
any other shaft having a suitable rate of motion may be used as the
source of the oscillation.
To protect the surface of the cylinder from the disturbing action
of the air I make the cylinder ends to project, as shown in section,
Figure 8, in which section the rim of the main cylinder B is shown
overhanging the retaining rim or shield F by which the air is prevented
from reaching the surface of the cylinder. This is applicable in its
useful results both to the above improvement and to the following one,
as it prevents the unequal piling of the fibre in its progress through the
enginc.
My second improvement in combination with the same carding
engine for the purpose of separating the shives adhering to the truc
fibre are represented under the letter d, d', d³, d³, &c. These parts:
are knife-edged cross bars set under the main cylinder and adjusted
so as that the fibre when loaded with shives or other foreign matter
shall, when thrown by the rotation of the main cylinder, cause the
same to strike upon the knife-edged bars d, d', d², d³, &c., and as
they strike upon them the shives and other foreign matter are liberated:
and struck off. I make these knife-edged bars adjustable so as they
may be placed in the best possible position for the performance of the
work above named.

page_text: Having now described the nature of my said Invention, and the
manner in which the same is to be performed, I declare that I claim as
secured to me thereby,―
Firstly. The oscillation of the main cylinder and feeder on the
carding engine shown and described, and the manner of effecting the
same.
Secondly. I claim the method described and shown by which
during both operations the surface of the main cylinder is protected
from the disturbing action of the air by the air retaining ring F.
Thirdly. The knife-edged cross bars by which the shives are separated
from the fibre by the rotation of the main cylinder.
In witness whereof, I, the said Jacob Dockray, have hereunto
set my hand and seal, this Eighteenth day of October, in the year
One thousand eight hundred and sixty-nine.
JACOB DOCKRAY. (L.S.)