IMPROVEMENTS IN THE MANUFACTURE OF WOOLLEN CLOTH FOR THROSTLE PURPOSES
Year: 1872

page_text: LETTERS PATENT to William John Porritt, of Sunnybank Mills,
Helmshore, in the County of Lancaster, Woollen Manufacturer,
for the Invention of "IMPROVEMENTS IN THE MANUFACTURE OF WOOLLEN
CLOTH FOR THROSTLE PURPOSES."
Scaled the 28th June 1872, and dated the 13th April 1872.
COMPLETE SPECIFICATION filed by the said William John Porritt
at the Office of the Commissioners of Patents, with his Petition
and Declaration, on the 18th April 1872, pursuant to the 9th
Section of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
JOHN PORRITT, of Sunnybank Mills, Helmshore, in the County of
Lancaster, Woollen Manufacturer, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVE-
MENTS IN THE MANUFACTURE OF WOOLLEN CLOTH FOR THROSTLE PURPOSES," and

page_text: have petitioned Her Majesty to grant unto me, my executors, adminis-
trators, and assigns, Her Royal Letters Patent for the same, and have
made solemn Declaration that I am the true and first Inventor thereof,
and that the same is not in use by any other person or persons to the
best of my knowledge and belief.
NOW KNOW YE, that I, the said William John Porritt, do hereby
declare that the following Complete Specification, under my hand and
seal, fully describes and ascertains the nature of the said Invention, and
in what manner the same is to be performed, in and by the following
statement:-
.
1
This Invention consists in a novel application of woollen cloth
specially manufactured of the width of the ends of the bobbins of
throstles, and on which the bobbins rest, being for that purpose applied
longitudinally to the rails. This woollen rest secures a sufficient drag to
be applied to the bobbins, and also the lubrication of the spindles in a 1
superior manner.
It has hitherto been necessary when using similar material for a like
purpose to punch holes therein for the spindles at suitable distances,
thereby occasioning the entire loss of much valuable woollen cloth, and
not permitting the utilization thereof for lubrication purposes.
2
In manufacturing this cloth I dispense with punching by leaving out
a number of warp strands in line with the spindles, thereby permitting..
the cloth freely to pass over the spindles, whilst at the same time the
wool remains in contact with them, and draws into its substance any
excess of oil upon the spindles, and when they heat give it off, thereby 2
securing the generalisation of supplied oil for lubrication purposes. Tho
ends of the bobbins rest upon the cloth as above stated, and obtain there-
from an efficient drag, which is well known to be best supplied by woollen
material, and in common with the best forms of similar cloth; this cloth
may also after being used for throstle purposes be wrapped upon the 3
piston rods of steam engines within the stuffing box, and anew become
a lubricator thereof.
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, the method herein-before described in which *3

page_text: woollen cloth is manufactured for throstle purposes, and serves both as a
more efficient drag to the bobbins, and a continuous lubricator of
the spindles.
In witness whereof, I, the said William John Porritt, have hereunto
set my hand and seal, this Ninth day of April One thousand
eight hundred and seventy-two.