IMPROVEMENTS IN CARDING ENGINES
Year: 1880

page_text: LETTERS PATENT to Benjamin Alfred Dobson, of the Firm of Dobson and
Barlow, of Bolton, in the County of Lancaster, Machine Maker, for an
Invention of "IMPROVEMENTS IN CARDING ENGINES." Partly a communi-
cation from abroad by James Beck, of St. Petersburgh, in the Empire of
Russia.
PROVISIONAL SPECIFICATION left by the said Benjamin Alfred Dobson at
the Office of the Commissioners of Patents on the 19th August 1880.
BENJAMIN ALFRED DOBSON, of the Firm of Dobson and Barlow, of Bolton,
in the County of Lancaster, Machine Maker. "IMPROVEMENTS IN CARDING
ENGINES." Partly a communication from abroad by James Beck, of St. Petersburgh,
in the Empire of Russia.
These improvements relate to the Invention for which Provisional Protection
was granted to me, A.D. 1880, March 18, No. 1174.
The first part of this Invention, which was communicated to me from abroad by
James Beck, of St. Petersburgh, in the Empire of Russia, consists in shaping or
forming ridges or grooves in the inner surface of the covers of carding engines
when such covers are close to the card wire, the section of the covers presenting a
serrated appearance. The ridges are made at an angle more or less acute to the
circumference or surface of the card wire, and set with their projecting edges
towards the fibre as it is carried round by the cylinder, thus tending to straighten
or smooth the cotton or other fibre being operated upon. The ridges may be made
of any suitable shape, size, or number.
The second part of this Invention consists in placing a V shaped box between
the main cylinder and the doffer, of which the serrated card cover forms one side;
and supported in bearings in this box, and parallel to the axis of the card cylinder,
I place a fluke rod, which is caused to revolve by friction bowls, one on the end of
the fluke rod and on on a stud driven by the one edge or both edges of the doffer,
and so arranged that the diameter of the lap on the fluke rod does not interfere

page_text: with the driving, and so as to be removable by lifting straight out. At the upper
side of this box I make a slot in the serrated card cover just below the flats and
the full width of the cylinder. In this slot is placed a blade or doctor, which
catches the neps, or motes, or leaves, or fly in the fibre being carded, and causes
them to be thrown into the box where the fly is formed into a lap by the fluke
rod, and the heavy dirt falls into the box bottom.
The box is secured in its place by winged screws, so that it can be readily
removed when necessary.
The box or serrated card cover may be attached to the side of the carding.engine
by brackets, and is adjusted to the requisite distance from the card cylinder by
screws in the brackets.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Benjamin Alfred Dobson in the Great Seal Patent Office on the 16th
February 1881.
BENJAMIN ALFRED DOBSON, of the Firm of Dobson and Barlow, of Bolton,
in the County of Lancaster, Machine Maker. "IMPROVEMENTS IN CARDING
ENGINES." Partly a communication from abroad by James Beck, of. Saint
Petersburgh, in the Empire of Russia.
These improvements relate to the Invention for which Provisional Protection
was granted to me, A.D. 1880, March 18, No. 1174.
The first part of this Invention, which was communicated to me from abroad by
James Beck, of Saint Petersburgh, in the Empire of Russia, consists in shaping
or forming ridges or grooves in the inner surface of the covers of carding engines
when such covers are close to the card wire, the section of the covers presenting a
serrated appearance.. The ridges are made at an angle more or less acute to the
circumference or surface of the card wire, and set with their projecting edges
towards the fibre as it is carried round by the cylinder, thus tending to straighten
or smooth the cotton or other fibre being operated upon.
The ridges may be made of any suitable shape, size, or number.
The second part of this Invention consists in placing a V shaped box between
the main cylinder and the doffer, of which the serrated card cover forms one side;
and supported in bearings in this box and parallel to the axis of the card cylinder
I place a fluke rod, which is caused to revolve by friction bowls, one on the end of
the fluke rod and one on a stud driven by the one edge or both edges of the doffer,
and so arranged that the diameter of the lap on the fluke rod does not interfere
with the driving, and so as to be removable by lifting straight out. At the upper
side of this box I make a slot in the serrated card cover just below the flats, and
the full width of the cylinder. In this slot is placed a blade or doctor, which
catches the neps, or motes, or leaves, or fly in the fibre being carded, and causes
them to be thrown into the box where the fly is formed into a lap by the fluke
rod, and the heavy dirt falls into the box bottom.
The box is secured in its place by winged screws, so that it can be readily
removed when necessary.
The box or serrated card cover may be attached to the side of the carding engine
by brackets, and is adjusted to the requisite distance from the card cylinder by
screws in the brackets.
And in order that this Invention may be fully understood and readily carried
into effect, I will describe the accompanying Drawing, reference being had to the
figures and letters marked thereon.
The Drawing shows a portion of a carding engine to which the improvements
are applied. a is the card cylinder, a¹ is a fiat, and b is the doffer, which are or
may be made as usual. c is the card cover, in which are formed the ridges or
serrations invented by the said James Beck; d is the box extending the whole
width of the carding engine, one side of which is formed by the card cover; e is
the fluke rod supported in bearings (one at each end of the box); g is a friction.
bowl fixed on one end of the fluke rod e; his another friction bowl on the stud i;
j is a slot in the card cover the full width of the cylinder; and k is a blade or
doctor,
The part of the box d which forms the lid is hinged at l, so that it can readily
be opened. m is a bracket shown in dotted lines, to which the card cover c and
box d are attached; n is a regulating screw to adjust the cover c and doctor k to
the required distance from the main cylinder; and o is a set screw to fix the
bracket m when adjusted.

page_text: There is a bracket m with adjusting and set screws at each side of the machine,
and the bowls g and h driven by the edge of the doffer may be used to drive the
fluke rod at one or both ends. The card cover at the back of the machine may
also be serrated.
The mode of operation is as follows :-
The cotton or other fibre when carried round by the main cylinder is to a great
extent straightened or smoothed by the ridges in the card cover, and the neps,
motes, leaves, or fly which are on the surface are caught by the doctor k and thrown
into the box d. The fluke rode is caused to revolve by the edge of the doffer
imparting motion to the friction bowl h, which drives the bowl g, and with it the
fluke rod. The fly is formed into a lap on the fluke rod, and the heavy dirt falls
into the bottom of the box. When the lap has attained a sufficient diameter the
cover of the box is swung back and the lap taken out, and if necessary the dirt is
removed from the bottom of the box. Ridges or grooves may be made in the
cover of any carding engine where the cover is in close proximity to the cylinder,
and they may be parallel or not parallel to the axis of the cylinder, and of any
desired length or shape.
Having stated the nature of the Invention, and described the manner of
performing the same, I would have it understood that I do not limit myself to the
details given, and
I declare that I claim as secured to me by the hereinbefore in part recited Letters
Patent,-
1. The ridges in the card cover, substantially as and for the purpose shown and
described (invented by the said James Beck), and
2. The box d, the doctor k, and the fluke rod e, substantially as shown and
described (my own Invention).
•
In witness whereof, I, the said Benjamin Alfred Dobson, have hereunto set
my hand and seal, this Fifteenth day of January, One thousand eight
hundred and eighty one.
THA
RADGON
BENJAMIN ALFRED DOBSON. (L.S.)