AN IMPROVED MODE OF AND APPARATUS FOR. TESTING THE SIZE AND WEIGHT OF YARN IN THE PROCESS OF MANUFACTURE
Year: 1871

page_text: LETTERS PATENT to James McGlashan, of South Dudhope Works,
Dundee, for the Invention of "AN IMPROVED MODE OF AND APPARATUS FOR.
TESTING THE SIZE AND WEIGHT OF YARN IN THE PROCESS OF MANUFACTURE."
Sealed the 16th January 1872, and dated the 19th July 1871.
PROVISIONAL SPECIFICATION left by the said James McGlashan at
the Office of the Commissioners of Patents, with his Petition, on
the 19th July 1871.
I, JAMES MCGLASHAN, of South Dudhope Works, Dundee, do hereby
declare the nature of the said Invention for "AN IMPROVED MODE OF AND
APPARATUS FOR TESTING THE SIZE AND WEIGHT OF YARN IN THE PROCESS OF
MANUFACTURE," to be as follows:
-
It is well known that the size or number whereby the thickness and
-strength of yarn is indicated depends upon the weight of a given length
of yarn, and to arrive at this the yarn must be wound into hanks and
then weighed and then wound again into cops.

page_text: The object of the present Invention is to ascertain the number or
size of the yarn without the trouble, hindrance, and cost of winding it
into hanks and unwinding it again as is usually done. To this end I fix
on any convenient part of the machine for making cops, pirns, rolls, or
spools, by bolts, screws, or otherwise, an index or measuring apparatus
in combination with a drum or pulley over which the yarn passes and
drives the said drum and thus gives motion to the counting or measuring
apparatus. The quantity of yarn that thus passes round the drum will
be measured and recorded, and when the desired length has passed over
the yarn it is taken and weighed and its exact size and number will
thus be found. The counting apparatus or index may be of the ordinary
kind and such as is well known in the arts.
The Invention is peculiarly adapted to machines for making cops
from spinning bobbins, and is also suited to a variety of processes where
it is desirable to measure a portion of the yarn (during manufacture) as
a test of its correctness in size and weight.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James McGlashan in the Great Seal Patent
Office on the 18th January 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
MCGLASHAN, of South Dudhope Works, Dundee, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Nineteenth day of July, in the year
of our Lord One thousand eight hundred and seventy-one, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said James McGlashan, Her special licence
that I, the said James McGlashan, my executors, administrators, and
assigns, or such others as I, the said James McGlashan, my executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVED MODE
op and ApparRATUS FOR TESTING THE SIZE AND WEIGHT OF YARN IN THE PROCESS
OF MANUFACTURE," upon the condition (amongst others) that I, the said

page_text: James McGlashan, my executors 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 the same was to be performed, and cause the same
to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said James McGlashan 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, reference being had to the Drawing hereunto
annexed, and to the letters and figures marked thercon (that is to say) :-
It is well known that the size or number whereby the thickness and
strength of yarn is indicated depends upon the weight of a given length
of yarn, and to arrive at this the yarn must be wound into hanks and
then weighed and then wound again into cops.
The object of the present Invention is to ascertain the number or
size of the yarn without the trouble, hindrance, and cost of winding it
into hanks, and unwinding it again as is usually done. To this end I
fix on any convenient part of the machine (for making cops, pirns,
rolls, or spools,) by means of bolts, screws, or otherwise, an index or
measuring apparatus in combination with a drum or pulley over which
the yarn passes. The yarn in its passage drives the said drum and thus
gives motion to the counting or measuring apparatus. The quantity of
yarn that passes round the drum will thus be measured and recorded,
and when the desired length has passed over the yarn is to be taken and
weighed and its exact size and number will be found. The counting
apparatus or index may be of the ordinary kind, and such as is well
known in the arts.
The Invention is peculiarly adapted to machines for making cops
from spinning bobbins, and is also suited to a variety of processes where
it is desirable to measure a portion of the yarn (during manufacture) as
a test of its correctness in size and weight.
The construction of the apparatus and the arrangement and operation
of its various parts will be best understood by referring to the accom-
panying Drawing, in which Figures 1 and 2 are full size views of the
improved instrument or apparatus for testing the size and weight of the
yarn, and Fig. 3 shews the mode of applying the same to one of Combe's
patent cop winding machines.

page_text: The testing apparatus shewn in Figures 1 and 2 consists of a light
pulley a, over or round which the yarn passes, and thereby causes it to
rotate. This pulley a is connected by a series of wheels b, b¹, b², and
worms c, c¹, c², to a pointer or dial d, on which is fixed a projecting
piece e that comes in contact with the lower end of the hammer g, and
causes the hammer g to fall (as indicated by the dotted lines in Fig. 1,)
and thus break the thread at each revolution of the pointer or dial d.
The hammer g is replaced in its elevated position by compressing the
coiled spring g', Fig. 2, which allows the lower end of the hammer g
to pass the projecting piece e on the pointer or dial d. For coarse yarns
the circumference of the pulley a is made half a yard, and it gives
motion to the pointer or dial d through the series of worms c, c¹, c³, and
wheels b, 6, 62, as already mentioned, and which are so arranged and
proportioned that the pulley a makes fourteen thousand four hundred
revolutions for each one of the dial or pointer d, so that seven thousand
two hundred yards or half a spindle of yarn will have passed over or
around the pulley a for each revolution of the pointer or dial d. This
apparatus enables the yarn to be tested as to its size during the process of
winding from the spinning bobbins on to the cop, pirn, or spool, as shewn
at Fig. 3 without the trouble of reeling it, which is the usual method.
I would here observe that I do not intend to confine myself to the
exact arrangement of parts herein shewn and described, as the proportion
between the revolutions of the pulley a and the dial or pointer d may be
varied, and there may also be modifications in the arrangement and
operation of the various parts without departing from the nature,
principle, and object of the Invention.
Having now described my Invention of "An Improved Mode of and
Apparatus for Testing the Size and Weight of Yarn in the Process of
Manufacture," and having explained the manner of carrying the same
into effect, I claim as the Invention secured to me by Letters Patent as
aforesaid, adapting to a doubling, cop-winding, or other machine, used
in the process of manufacturing yarn, a measuring instrument for
indicating the actual quantity of yarn wound on any given spindle as
herein set forth as a means of testing its accuracy without the trouble
of reeling or making test hanks as heretofore.
I also claim the use for the purpose set forth of the improved
apparatus above shewn and described or any modification thereof
consisting of a pulley or drum driven by the yarn to be measured

page_text: or tested, and which drum or pulley by means of any convenient
mechanism or gearing communicates motion to an index or dial which
by its rotation liberates a thread breaker and severs the yarn when the
proper quantity has been drawn from the winding machine, as herein
set forth.
In witness whereof, I, the said James McGlashan, have hereunto
set my hand and seal, the Sixteenth day of January, in the
year of our Lord One thousand eight hundred and seventy-two.
JAMES MCGLASHAN. (L.S.)