IMPROVEMENTS IN PAPER MAKERS DRYING FELTS
Year: 1882

page_text: LETTERS PATENT to Thomas Aitken of Helmshore in the County of Lancaster
Cotton Manufacturer for an invention of IMPROVEMENTS IN PAPER MAKERS
DRYING FELTS"
PROVISIONAL SPECIFICATION left by the said Thomas Aitken at the
Office of the Commissioners of Patents on the 27th May 1882.
THOMAS AITKIN of Helmshore in the County of Lancaster Cotton Manufacturer
"IMPROVEMENTS IN PAPER MAKERS DRYING FELTS
"
This invention relates to Paper makers drying "felts" manufactured of cotton
weft and warp by weaving defect in use of which as heretofore is that the pulp
takes or receives the impression of the inner surface of the felt and is otherwise
marked thereby.
In the manufacture of woven cotton felts for purpose aforesaid according to this
my invention after the felt is woven and joined or spliced the whole forming an
endless felt I "raise" the fibres on the working surface of the felt by means of a
raising gig or card cylinder or card roller whereby not only all interstices between
weft and warp threads are filled in and covered but the splice or joint of the felt is
likewise covered and obliterated (so far as marking the paper) the felt over its
entire surface presenting a uniform and even surface the paper dried thereon being
free from the objectionable marking.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
"
by the said Thomas Aitken in the Great Seal Patent Office on the
24th November 1882.
THOMAS AITKEN of Helmshore in the County of Lancaster, Cotton Manufacturer.
IMPROVEMENTS IN PAPER MAKERS DRYING FELTS
"
This invention relates to paper makers drying "felts" manufactured of cotton
weft and warp by weaving a defect in use of which as heretofore is that the pulp
takes or receives the impression of the woven surface of the felt and is otherwise
marked thereby

page_text: In the manufacture of woven cotton felt for purpose aforesaid according to this
my invention after the felt is woven and joined or spliced the whole forming an
endless felt I "raise" the fibres on the working surface of the felt by means of a
raising "gig" or card cylinder or card roller whereby not only all interstices
between weft and warp threads are filled in and covered but the splice or joint of
the felt is likewise covered and obliterated (so far as marking the paper) the felt
over its entire surface presenting a uniform and even surface the pulp and paper
dryed thereon being free from the objectionable marking.
Such being the nature and object of this my said invention I will now proceed
to describe the same fully and also point out apparatus suitable for "raising" the
fibres on the working surface of the improved felts.
"
In the manufacture of woven cotton felt for purpose aforesaid according to this
my invention after the felt is woven and joined or spliced the whole forming an
endless felt I " raise the fibres on the working surface of the felt by means of a
raising "gig" or card cylinder or card roller whereby not only all interstices
between weft and warp threads are filled in and covered but the splice or joint of
the felt is likewise covered and obliterated (so far as marking the paper) the felt
over its entire surface presenting a uniform and even surface the pulp and paper
dryed thereon being free from the objectionable marking.
"
Apparatus suitable for raising the working surface of the felt consists of a raising
gig" of ordinary construction excepting that inasmuch as the felt is spliced or
joined end to end forming an endless belt the breast and guide rollers of the gig
should be mounted in bearings the caps or holding pins of which are readily
removed so as to facilitate placing the said endless felt in position in the gig that
its surface may be raised. Or instead of a "gig" a card covered cylinder revolving
over a table platform or drum on and over which the felt is passed and its face
raised may be employed, or the surface of the felt may be raised by means of hand
carding.
Having thus fully described the nature and particulars of this my said invention
of improved manufacture of felts and the apparatus employed in such manufacture
I would have it understood that I lay no claim to the raising gig card cylinder
or hand carding what I do claim is.
The improvements in paper makers drying felts as and for the purpose herein
described.
In Witness whereof I the said Thomas Aitken have hereunto set my hand
and Seal this twenty first day of November in the Year of our Lord one
Witness
WALTER BRIERLEY
Patent Agent
Halifax, Blackburn., & Huddersfield
THOB AITKEN (L.S.)