IMPROVEMENTS IN THE CONSTRUCTION OF APPARATUS FOR TWISTING YARNS
Year: 1884

page_text: We THOMAS BRIGGS Manufacturer and EDWARD WEBB Manager both of
Richmond Hill Works Salford in the County of Lancaster do hereby declare the
nature of our invention for IMPROVEMENTS IN THE CONSTRUCTION OF APPARATUS
FOR TWISTING YARNS to be as follows:--
This invention relates to improvements in the construction of apparatus for
twisting yarns of fibrous material and is effected in the following manner :-
Instead of the creel pins arranged at the top of the frame, for receiving the
bobbins of yarn to be twisted, as in the ordinary method of doubling we arrange
the spindles in pairs mounted upon rails secured to the front of the frame.
One of these spindles is termed the "letting off" spindle the other is an ordinary
doubling spindle" and flyer-The bobbins of yarn previously wound upon our
doubling winding frame are placed upon the "letting off" spindles and the threads
from these bobbins are carried upwards round the draw rollers, which are placed
between the two spindles forming the pair, thence passing down the flyer to the
bobbins upon the "taking up" spindles thus receiving twist at both ends.
Conveniently situated at the back part of the machine and behind each pair of
spindles is placed a vertical shaft with fast and loose pulleys and driven by a band
from a pulley upon a horizontal shaft passing from end to end of the front part of
the frame.
On each of these vertical shafts and nearer the lower part thereof is keyed a
flanged pulley which serves to drive each pair of spindles by means of a band
passing round both the small flanged pulleys on the spindles, and driving them both
in the same direction.
On the upper part of these vertical shafts a pinion is keyed which gears into an
intermediate wheel which drives a change pinion keyed or fastened by means of a
set screw to another small upright shaft placed a short distance in front of the first
named vertical shaft.
From this small upright shaft the draw roller (placed between the two spindles
forming the pair) is driven by means of bevil gearing and horizontal shafts
extending to the front of the frame.
The stopping and starting of each pair of spindles is effected by removing the
band driving the upright shaft from the fast to the loose pulley by means of a
strap fork worked by a small handle in front of the machine.

page_text: By this arrangement it will be seen that each pair of spindles with its separate
draw roller form a distinct machine or section of a machine complete in itself
although the frame may contain any number of pairs without any increase of space
or pitch beyond that of the ordinary twisting frames-The advantages of this
construction will also be apparent to any one conversant with doubling and
twisting heavy fibres as it admits of a great variety of cords being produced
simultaneously and avoids all delay and expense in changing or running off a
frame Each spindle can be supplied with fresh bobbins and doffed or pieced or
changed separately while the others are running, thus enabling a much larger "turn
off" to be obtained.
The principal advantages obtained by this improved construction of twisting
frames are: (1) That both "letting off" and "winding on" spindles being at the
front of the machine both space and labor are economized-(2). That each separate
section of the machine is complete in itself and can be started and stopped
independently of all the other sections-(3) The twist is put in at both ends of the
yarn at once and equal length and strain upon each strand is ensured-(4) That
this system allows of the spindles being driven at a much higher speed and as they
are driven from vertical pulleys with comparatively wide straps there is less
liability to slip a "miss-twist" resulting in the production of a superior cord, and
very little "waste."
Dated the 30th dev of Jonnor 1984
GEORGE DAVIES,
Agent for the Petitioners.

page_text: We THOMAS BRIGGS Manufacturer and EDWARD WEBB Manager both of
Richmond Hill Works Salford in the County of Lancaster do hereby declare
the nature of our invention for "IMPROVEMENTS IN THE CONSTRUCTION OF
APPARATUS FOR TWISTING YARNS 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
twisting yarns of fibrous material.
Our invention will be readily understood from the following description reference
being made to the accompanying sheet of drawings.
Fig 1'is a front elevation of one section of our machine Fig 2 is a vertical
transverse section of the same and Fig 3 a back elevation thereof.
Instead of the creel pins being arranged at the top of the frame for receiving the
bobbins of yarn to be twisted, as in the ordinary method of doubling, we arrange
the spindles in pairs mounted upon rails secured to the front of the frame a a.
One of these spindles b. b is termed the letting off spindle the other is an ordinary
doubling spindle" c, c and flyer d, d. The bobbins of yarn e e previously wound
upon our doubling winding frame are placed upon the letting off spindles and the
threads from these bobbins are carried upwards round the draw roller ff then back
round the pulley g,g and over the draw rollers ff, thence passing down the flyer a a
to the bobbins ex ex upon the taking up spindles c, c thus receiving twist at both
ends.
Conveniently situated at the back part of the machine and behind each pair of
spindles is placed a vertical shaft h h fitted with fast and loose pulleys i. i* and
driven by a band jj from a pulley k k upon a horizontal shaft 17 passing from end
to end of the front part of the frame.
On each of these vertical shafts h h and near the lower part thereof is keyed
a flanged pulley m m which serves to drive each pair of spindles by means of a
band nn passing round both the small flanged pulleys o o p p on the spindles and
driving both in the same direction.
On the upper part of each of these vertical shafts h h a pinion qq is keyed,
which gears into an intermediate wheel which drives a change pinion 8,8 keyed
or fastened by means of a set screw to another small upright shaft t t placed a short
distance in front of the first named vertical shaft h h.
From this small upright shaft the draw roller ff (placed between the two
spindles b and c forming the pair) is driven by means of bevil gearing u u and
a horizontal shaft v v extending to the front of the frame.
The stopping and starting of each pair of spindles is effected by removing the
band driving the upright shaft from the fast pulley i i to the loose pulley ix ix by
means of a strap fork w w worked by a small handle xx in front of the machine,
the said handle actuating the twisted sector y y which raises or lowers the rack zz
the weight a¹¹ counter balancing the weight of the said strap fork rack and
sector.
By this arrangement it will be seen that each pair of spindles with its separate
draw roller from a distinct machine or section of a machine complete in itself
although the frame may contain any number of pairs without any increase of space
or pitch beyond that of the ordinary twisting frames The advantages of this
construction will also be apparent to any one conversant with doubling and

page_text: twisting heavy fibres as it admits of a great variety of cords being produced
simultaneously and avoids all (lelay and expense in changing or running off a
frame.
Each spindle can be supplied with fresh bobbins and doffed or pieced or
changed separately while the others are running, thus enabling a much larger
"turn off" to be obtained.
The principal advantages obtained by this improved construction of twisting
frame are (1) That both "letting off and winding on spindles being at the front
of the machine both space and labor are economized (2) That each separate
section of the machine is complete in itself and can be started and stopped
independently of all other sections (3) The twist is put in at both ends of the
yarn at once and equal length and strain upon each strand is insured.
(4) That the system allows of the spindles being driven at a much higher speed
and as they are drawn from vertical pulleys with comparatively wide straps there
is less liability to slip or "miss-twist" resulting in the production of a superior
cord and very little "waste."
Having now particularly described and ascertained the nature of our said
invention and in what manner the same 'is to be performed we declare that what
we claim is
First arranging the "letting off" and the "winding on" spindles in pairs both
at the front of the frame.
Secondly Constructing the machine in sections in the manner described so that
each separate section of the machine is complete in itself and can be started and
stopped independently of all the other sections.
Thirdly the general construction and arrangement of the inachine as a whole
and the method of connecting and driving the various parts all substantially as
herein before more particularly described and illustrated by the drawings hereunto
annexed.
Doted this 20th dere of And 1001
.