Improvements in the Construction of Apparatus for Testing Yarn.
Year: 1891

page_text: Date of Application, 11th July, 1891
Complete Specification Left, 14th Oct., 1891-Accepted, 14th Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Apparatus for Testing Yarn.
I, WILLIAM HENRY BROWN of 64 Chorley Street, Bolton in the County
of Lancaster, Cotton Spinner, do hereby declare the nature of my said invention to
be as follows:-.
gear.
This invention relates to improvements in the construction of apparatus for
testing the strength of yarn or thread, and is designed for the purpose of testing
one or more threads of yarn at each operation, also for allowing of the same being
operated mechanically at any time and in any place without the aid of the usual
motive power employed hitherto for driving yarn testers. This I effect by mounting
on a frame suitable spur or other gear operated by a coiled spring that will allow
of its being tightened or wound up similar to a spring clock, or by cquivalent
means, such as a cord, barrel, and weight, or other self-contained driving apparatus,
which can be provided with a regulator and means for stopping and starting the
same at will. In bearings are mounted a sliding rod or spindle attached to a rack,
the latter being operated by a pinion from the aforesaid spur or other
If
desired the rack and pinion can be substituted by other mechanical equivalents,
such as, a cord being wound round a barrel or other means. On the upper end of
the machine or yarn tester is mounted a sliding rod controlled by a spring, or by a
weight and lever arrangement, the latter being connected by a cord, chain, or other
equivalents passing over a pulley or other means according to construction. This
sliding rod is fitted with a rack and "pawl" arrangement for arresting its move-
ment when the yarn or thread breaks. The sliding rod can be substituted by a
lever and weight, so constructed and arranged as to cause a gradually increasing
strain on the yarn or thread under operation as the weight moves from a
perpendicular line or point of rest. From a shaft or centre is operated a finger
working in connection with a dial or index to indicate the breaking strength of the
yarn or thread. Each sliding rod before mentioned is fitted with a screw or other
mechanism for gripping or securing one or more threads of yarn to be operated
upon. Means are employed for re-setting the apparatus after the yarn or thread
being tested is broken. The chief advantage of this invention is that it allows of a
single thread of yarn being tested, which is very important and essential, as in
the course of manufacture each single thread of yarn has put upon it a separate
strain.
Dated the 10th T..1- 1901
EDMUND CHADWICK,
Agent.
COMPLETE SPECIFICATION.
Improvements in the Construction of Apparatus for Testing Yarn.
I, WILLIAM HENRY BROWN of 64 Chorley Street, Bolton in the County
of Lancaster, Cotton Spinner, 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 :-
This invention relates to improvements in the construction of apparatus for
testing the strength of yarn or thread, and is designed for the purpose of testing
one or more threads of yarn at each operation, also for allowing of the same beiug
operated. mechanically at any time and.in any placo without the aid of the usual
motive power employed hitherto for driving yarn testera.. .This I effect by mounting
TD 037

page_text: on a frame suitable spur or other gear operated by a coiled spring that will allow
of its being tightened or wound up similar to a spring clock, or by equivalent
means, such as, a cord, barrel, and weight, or other self-contained driving apparatus,
which can be provided with a regulator and means for stopping and starting the
same at will. In hearings are mounted a sliding rod or spindle attached to a rack,
the latter being operated by a pinion from the aforesaid spur or other gear. If
desired the rack and pinion can be substituted by other mechanical equivalents,
such as, a cord being wound round a barrel or other means. On the upper end of
the machine or yarn tester is mounted a sliding rod controlled by a spring, or by a
weight and lever arrangement, the latter being connected by a cord, chain, or other
equivalents passing over a pulley or other means according to construction. This
sliding rod is fitted with a rack and “pawl" arrangement for arresting its move-
ment when the yarn or thread breaks. The sliding rod is attached to a lever and
weight, so constructed and arranged as to cause a gradually increasing strain on
the yarn or thread under operation as the weight moves from a perpendicular line
or point of rest. From a shaft or centre is operated a finger working in connection
with a dial or index to indicate the breaking strength of the yarn or thread. Each
sliding rod before mentioned is fitted with a screw or other mechanism for gripping
or securing one or more threads of yarn to be operated upon. Means are employed
for re-setting the apparatus after the yarn or thread being tested is broken. The
chief advantage of this invention is that it allows of a single thread of yarn being
tested, which is very important and essential, as in the course of manufacture.cach
single thread of yarn has put upon it a separate strain.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a front elevation of my improved yarn testing machine.
Fig. 2 is an elevation of same with cover removed.
Fig. 3. is a side elevation of same with cover side removed.
Fig. is a side sectional elevation of front cover.
Fig. 5 is a part sectional view of yarn grippers.
Fig. 6 is a side elevation of winding drum, and
Fig. 7 is a back view of winding drum and spring attachment for driving and
releasing the winding cord.
of
A is the frame of the machine, which may be of wood or other materials, and
B the loose box cover provided with the dial or index C. On the frame A are
secured the wood or other blocks D and E. To the block D are fixed the
bearings F, in which is mounted the sliding rod G provided with the rack H. The
jaw of the upper bearing F is extended and fitted with the pin or centre O, on
which are mounted the "pawls" P of varying lengths to ensure of the rack H and
rod G being arrested immediately the yarn or thread under test is broken.. The
upper end of the rod G is connected to the chain I which is secured to the groove
pulley J on the shaft or centre K. The latter is mounted in bearings in the
framework L fixed to the block D. To the grooved pulley J is fitted the lever M
carrying the weight N. The weight N is fitted with the screwed stem E, on which
is mounted the screwed nut or weight G to adjust the same for the purpose
accurately setting the finger T on the dial C. On the shaft or centre K is fixed
the spur wheel gearing into the spur pinion R on the shaft or centre S carrying
the index or dial finger T. To the block E are secured the stands or bearings U
and U¹, in which is mounted the sliding rod V. The latter is provided with the
slot W to allow it to slide on the end of the screw X in the bearing U to prevent
the rod V turning in its bearings. To the end of the rod V is attached the cord Y
which passes downwards and round the pulley Z on the centre A¹ and upwards to
the cord barrel B' on the shaft or centre of the spring or other clock mechanism.
The latter is composed of the spur wheels D' and pinions E on their respective
shafts or centres, also the ratchet wheel F', coiled spring G, and the fan.or
regulator H, the whole being mounted on. the framework Isecured to the block-E.
On the block E is pivoted the double lever J for arresting the fan or regulator Hi

page_text: to stop the spring or other clock mechanism, or for releasing the same to allow the
same to work by means of the coiled spring G¹ or its equivalent. On the shaft or
centre C¹ of the clock mechanism is fixed the disc K as shown in Fig. 6, and
between the said disc and the fixed washer L is mounted loosely the cord-barrel B'
with the ratchet wheel M. The cond-barrel B' is rotated to wind on the cord Y
by means of the "pawl" N' pivoted to the disc K' on the shaft or centre C', being
held in position by the spring O'. To the sliding rods G and V are fixed the yarn
grippers P provided with the screwed nuts Q and the leather or india-rubber
rings R¹ mounted on the screws S' as shown in Fig. 5. The front part of the
loose box cover B is provided with the slots T¹ in which are mounted the sliding
blocks U carrying the slide V₁. The bottom end of the slide V' projects under
the bottom yarn gripper Pl, by which it is slid downwards when yarn is being
tested. The slide V₁ is operated backward by the spring W' secured at one end
to the slide U; the other end being attached to the fixed pin X' on the inside of
the cover B as shown in Fig. 4. The slide V¹ is provided with the index Y' upon
which the index finger Z on the upper yarn gripper indicates the amount of stretch
or elasticity of the yarn under operation. The index on the dial C¹ can be marked
in parts of a pound or otherwise as desired. The index Y' is marked in inches aud
parts thereof so that the amount of stretch or elasticity on the yarn under operation
can be ascertained at a glance, thereby dispensing with the old and objection-
able system of obtaining this result by an average between two points. If
desired the spring G' can be dispensed with in which case the clock mechanism
will be operated by a barrel, chain, or cord, and weight as in the old style
of clocks.
This invention operates in the following manner :-Between the grippers Plone
or more threads of yarn A* can be secured by the screwed nuts Q', after which the
fan or regulator H of the clock mechanism is released by operating the lever Ji
on the outside of the cover B. Immediately the fan or regulator H is released
the clock mechanism commences to wind the cord Y on the barrel B', which pulls
down the sliding rod V, which by means of the yarn A2 pulls down the sliding
rod G and swivels the lever M and weight N in the direction indicated by the
arrow and dotted lines in Fig. 2, by which a gradually increasing strain is put
upon the yarn A being tested until it breaks, at which point the rack H on the
sliding rod G is arrested by one or more of the "pawls" P until the breaking
strength has been ascertained from the dial C and the stretch or elasticity from
the index Y on the sliding rod V1. To re-set the machine it is effected by releasing
the "pawl" N from the ratchet wheel M' on the cord pulley B' by means of the
lever B and pin C extending to the outside of the machine. Immediately the
ratchet wheel M¹ is released from the "pawl" N₁ the spring W re-sets the slide V',
and forces the sliding rod V backwards with the cord Y to its original position.
The upper part of the machine is re-set by releasing the "pawls" P from the
rack H on the sliding rod G by means of the arms D*.
11
An important feature of this invention is the means employed for operating the
same, which allows of the yarn tester being ready for operation at any time and in
any place, thereby dispensing with the inconvenience of having to work the same
by hand, or to wait until the steam or other motive power employed for driving
yarn testing machines is started.
Having now particularly described and ascertained the nature of my said
invention, and the method of performing the same, I declare that what I
claim is:-
1. In a machine for testing one or more threads of yarn at once, the use and
employment of clock or other similar mechanism actuated by spring or weight for
operating the same, substantially as described.
2. In combination with clock or similar mechanism actuated by a spring or
weight the use of the cord-barrel B' and the means for operating and releasing the
same, substantially as described.

page_text: 3. In combination with a yarn testing machine the use of the slide V' and
spring W' for the purposes specified, substantially as described.
4. The general arrangements, constructions,, and combinations of parts composing
the improved yarn testing machine, as hereinbefore described and as illustrated in
the annexed drawings.
Dated the 9th October 1901.
EDMUND CHADWICK,
Agent.