IMPROVEMENTS IN CARDING WOOL, COTTON, AND OTHER FIBROUS MATERIALS
Year: 1846

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, STEPHEN
R. PARKHURST, of Leeds, in the County of York, Manufacturer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westniinster, the Thirty-first day of
December, One thousand eight hundred and forty-six, in the tenth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Stephen R. Parkhurst, my exors, admors, and assigns, Her especial
licence, full power, sole privilege and authority, that I, the said Stephen
R. Parkhurst, my 'exors, admors, and assigns, or such others as I, the said
Stephen R. Parkhurst, my exors, adñiors, or assigns, 'should at any time agree
with, and no others, from time to time and at all times during the term
of years therein expressed, should and lawfully 'might make; usė, exercise,
and vend, within England, Wales, and the Town of Berwick-upon-Tweed, my
Invention of "IMPROVEMENTS IN CARDING WOOL, COTTON, AND OTHER FIBROUS
MATERIALS;" in which said Letters Patent is contained a proviso, that I, the
said Stephen R. Parkhurst, shall cause a particular description of 'the nature
of my said Invention, and in what manner the same is to be performed,
by an instrument in writing under my hand and seal, to be inrolled in Her
said Majesty's High Court of Chancery within six calendar months next

page_text: and immediately after the date of the said in part recited Letters Patent, as in
and by the same, reference being thereunto had, will more fully and at large
appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Stephen R. Parkhurst, do hereby declare that the nature of my said Invention,
and the manner in which the same is to be performed, are fully described and
ascertained in and by the following statement thereof, that is to say:-
Firstly, A represents a self-delivering doffer, to be used for doffing or
stripping all wool, cotton, and other fibrous materials from carding or other
engines, where such materials are straightened and delivered into a sliver can,
or other receptacle for the same. The Invention consists of two cylinders, one
of wood or metal, which I call a card cylinder, and may be made of any con-
venient size, covered with card wire clothing, the teeth of which card wire
clothing are made of any convenient length, and set in equal longitudinal
sections of an eigth or quarter of an inch broad or thereabouts; and having
corresponding spaces betwixt each section of an eigth or sixteenth part of an
inch. The other cylinder I call a slat cylinder; it is of equal diameter with
the above, and formed by strips, slats, or rods of metal being inserted at equal
distances in two metal rings, one at each end, grooved on the inner edge for
the purpose of receiving the ends of the strips, slats, or rods of metal, which
are as numerous as the spaces of the card cylinder, and at like distances, so
that when both the cylinders are in their places and in action, the strips, slats,
or rods of metal of the slat cylinder may accurately fit into and revolve with
the spaces of the card cylinder. Stays are placed betwixt the strips,. slats, or
rods of metal, sufficient to support them in their places. This cylinder, which
I call a slat cylinder, revolves with the card cylinder, supported and kept out
of the centre of the card cylinder by friction rollers; when revolving in the
card cylinders, the strips, slats, or rods are drawn in below the outer surface of
the card teeth which carry the wool, cotton, or other fibrous substances to the
opposite side, where the strips, slats, or rods. force the same from the card
teeth, and it may then be taken into a sliver can or other receptacle prepared
for the same. The friction rollers are so fixed as to cause the slat cylinder to
revolve as an eccentric.
Secondly, Numbers 1 and 2 represent two sectional metallic ring condensing
doffers. The Invention consists of an improved method of constructing con-
densing doffers, which are formed of a series of metallic rings in sections of one
inch or thereabouts in breadth, with corresponding spaces betwixt each section.
The sections of rings encircle two cylinders of equal diameters in such manner

page_text: that the rings of the one cylinder are exactly opposite to the spaces betwixt the
rings of the other cylinder.
In witness whereof, I, the said Stephen R. Parkhurst, have hereunto set
my hand and seal, this Fifth day of April, One thousand eight hundred
and forte soven

page_text: a a are a series of thin. blules or rods which are fixeil to two outer rings such as b, these
rings are supported by friction rollers placed at each end of the cylinder and turning
on acres suitably placed, and carried by the side framing of the machinery or the rings b
may by otherwise supported and carried. The bludes as it will by seen lie wholly within
the teeth at one side and protrude by their edges avanother parts of the cylinder and in
order to give sufficient stiffness to the blades a I apply thin metal rings in addition,to
the strong end/rings bat intervals of about twelve inches apart.