IMPROVEMENTS IN THE CONSTRUCTION OF APPARATUS FOR TWISTING AND DOUBLING YARN
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 AND DOUBLING YARN, to be as follows:-
-
This invention relates to the construction of machinery or apparatus for twisting
and doubling yarns and is more particularly applicable for the purpose of forming
a laid twine cord or banding and winding the same into bobbins.
On the front framing of the machine we mount a series of spindles termed
letting off" spindles, which let off the strands of yarn, and at the same time
impart an additional twist thereto. These spindles are formed in groups of (say,)
three each, and at the side of these (and also in front of the frame,) is mounted the
doubling spindle.
This spindle forms the cord by doubling the three strands together in the reverse
direction to the twist which the "letting off" spindles have given them and at the
same time winds the laid twine or cord on to the bobbin in the usual manner.
Conveniently situated at the back part of the machine behind each group of
spindles is an upright shaft which is driven from a pulley on the driving shaft
which passes from end to end of the front part of the frame.
On the lower part of this upright shaft a bevil wheel is keyed gearing into
another on a small horizontal shaft which is carried across the front of the frame
and drives the doubling spindle by means of another pair of bevil wheels, on the
other end.
On a rail at the back part of the machine (and in a line with the above named
upright shaft,) is mounted a smaller shaft on which is also keyed a bevil wheel
from which is driven (by similar means to those employed for driving the doubling
spindle,) the group of "letting off" spindles.
A change wheel is also keyed onto this small upright shaft which gears into an
intermediate wheel driven by a spur wheel keyed on the lower part of the first
named upright shaft.
The Draw rollers are situated between the group of "letting off," spindles and
the doubling spindle and are also driven by means of horizontal shafts and spur
and bevil wheels from the top part of the vertical shaft which drives the doubling
spindles,

page_text: Another part of the invention consists of a self-acting stop motion for separately
stopping the revolution of each group of doubling spindles and "letting off"
spindles and the draw rollers connected therewith, whenever a strand breaks or a
bobbin runs empty without stopping the action of the other spindles and draw
rollers of the machine.
This is effected as follows:-
On the cross rails of the machine is mounted (upon small brackets,) an oblong
frame containing the usual detector or drop pins.
A shaft is also mounted on the same brackets beneath the pins on which is
keyed a boss having projections thereon...
This shaft is always revolving and when a strand breaks, or a bobbin runs
empty, its corresponding pin drops and one of the projections on the block coming
into contact with it partly turns the frame containing the pins, at the same time
withdrawing a latch by means of a small lever attached to the said frame and
releasing a weight which is connected with the strap fork, thus removing the band
from the fast to the loose pulley upon the first mentioned vertical shaft.
"
I have here described only one section of the machine consisting of (say,) three
letting off" spindles with their stop motion, draw rollers, and doubling spindle,
but it will be understood that a complete machine consists of any convenient
number of these sections (each complete in itself,) and all mounted in one frame
and driven by one main driving shaft extending from end to end and the stopping
of one section does not in any way interfere with the working of the remainder.
This improved construction of laid cord frame possesses the following
advantages --
1, The method of arranging both the "letting off," and the doubling spindles in
the front of the frame, and all immediately under the eye of the attendant,
simplifies the machine and the attendance and dispenses with the necessity
for passing from the front to the back of the machine.
2, The method of driving all the spindles by means of toothed gearing ensures
an equal amount of twist both in the single strands and in the reverse turn
which is of the first importance in the production of a perfect cord, and
which cannot be attained by the ordinary method of driving with light
bands.
3, The arrangement of the spindles and draw rollers in separate groups as stated
in such a manner that each group is capable of being started and stopped
independently of the adjoining group admits of the simultaneous production
of a variety of cords upon the same machine, and avoids the constant
stopping of the whole of the frame during the necessary and frequent
renewals of the strand bobbins, or the doffing of the twisted cord.
4, The self acting stop motion, by stopping the group immediately upon the
running bare of a bobbin or the breaking of a strand, prevents the production
of "waste," and enables the attendant to take charge of a much greater
number of spindles, thus increasing the production and reducing the cost.
Dated the 30th day of January 1884.

page_text: 1
We THOMAS BRIGGS Manufacturer and EDWARD WEBB Manager both of
Richmond Hill Work's Salford in the County of Lancaster, do hereby declare the
nature of our invention for "IMPROVEMENTS IN THE CONSTRUCTION OF APPARATUS
FOR TWISTING AND DOUBLING YARN 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 the construction of machinery or apparatus for twisting
and doubling yarns and is more particularly applicable for the purpose of forming
a laid twine cord or banding and winding the same on to bobbins.
And in order that the same may be clearly understood we have annexed hereunto
a sheet of drawings illustrative thereof and have marked the same with figures and
letters of reference corresponding with those in the following description.
Fig 1 is a front elevation shewing a frame with two groups of spindles and
showing one of the automatic stop motions (hereinafter described) in sections.
Fig 2 is a transverse section of the machine.
Fig 3. is a sectional plan view of the front part of the machine and Fig 4 is a
plan of part of the driving gear and automatic stop motion hereinafter described.
On the front framing of the machine we mount series of spindles a a¹ a¹¹ termed
"letting off" spindles which let off the strands of yarn and at the same time
in part an additional twist thereto, these spindles are formed in groups of (say)
three each and at the side of these (and also in front of the frame) is mounted the
doubling spindle b. b.
This spindle b b forms the cord by doubling the three stands together in the
reverse direction to the twist which the "letting off" spindles a a¹ a¹¹ have given
them, and at the same time winds the laid twine or cord on to the bobbin in the
usual manner.
Conveniently situated at the back part of the machine behind each group of
spindles is an upright shaft c, c which is driven from a pulley d. d on the driving
shaft e. e which passes from end to end of the front part of the frame.
On the lower part of this upright shaft c, c a bevil wheel f, f is keyed gearing
into another bevil wheel f¹ f¹ on a small horizontal shaft g. g which is carried
across the frame and drives the doubling spindle b. b by means of another pair of
bevil wheels f¹, f¹¹ on the other end.
On a rail at the back part of the machine (and in a line with the above named
upright shaft c, c is mounted a smaller shaft cx, c* on which is also keyed a bevil
wheel h. h from which is driven (by similar means to those employed for driving
the doubling spindle) the group of "letting off" spindles a. a. all Or the
spindles a, a¹ a¹ may be driven by a band passing round a pulley on the shaft c*.
and round pulleys h¹ h¹ on the said spindles (see Figs 2 and 3) A change.
wheel, is also keyed on to this small upright shaft cx, c* which gears into an
intermediate wheel driven by a spur wheel "i" keyed on the lower part
of the first named upright shaft c, c. The draw rollers k k are actuated between
the group of "letting off" spindles a, a¹ all and the doubling spindle b. b and are
also driven by means of the horizontal shafts l, and spur and bevil wheels m, m¹
from the top part of the vertical shaft c, c which drives the doubling spindles b b. :

page_text: The strands pass round the draw roller k then back over the pulley k' and again
over the draw roller k to the doubling spindle a toothed pulley k¹¹ rests on the
strands as they pass over the said draw roller k.
Another part of the invention consists of a self acting stop motion for separately
stopping the revolution of each group of doubling spindles b, b and "letting off"
spindles a, a¹ all and the draw rollers k k connected therewith, whenever a strand
breaks or a bobbin runs empty without stopping the action of the other spindles
and draw rollers of the machine, This is effected as follows.
On the Cross rail n, n, of the machine is mounted (upon small brackets) an
oblong frame o, o containing the usual detector or drop pins.
A shaft is also mounted on the same brackets beneath the pins, on which is
keyed a boss p, p having projections thereon.
The shaft is always revolving and when a strand breaks or a bobbin runs empty
its corresponding pin drops, and one of the projections on the block coining into
contact with it partly turns the frame containing the pins, at the same time with-
drawing a latch 9, 9 by means of a small lever rr, attached to the said frame, and
releasing a weighted lever 8, 8 upon the lift shaft tt This weighted lever 8 8
raises a sector u u and with it a rack vv connected to the strap fork w, w,
thus removing the band from the fast pulley d³, d to the loose pulley d", "
upon the first named vertical shaft c. c. and stopping its corresponding group of
spindles. These may be started again by means of a handle x in front of the
frame.
We have here described only one section of the machine consisting of (say) three
letting-off" spindles with their stop motion draw rollers and doubling spindle
but it will be understood that a complete machine consists of any convenient
number of these sections (each complete in itself) and all mounted in one frame
and driven by one main driving shaft extending from end to end and the stopping
of one section does not in any way interfere with the working of the remainder.
This improved construction of laid cord frame possesses the following advan-
tages:
-
1. The method of arranging both the "letting off" and the doubling spindles in
the front of the frame and all immediately under the eye of the attendant simplifies
the machine and the attendance and dispenses with the necessity for passing from
the front to the back of the machine.
2. The method of driving all the spindles by means of toothed gearing ensures
an equal amount of twist, both in the single strands and in the reverse turn which
is of the first importance in the production of a perfect cord and which cannot be
attained by the ordinary method of driving with light bands.
3. The arrangement of the spindles and draw rollers in separate groups as stated
in such a manner that each group is capable of being started and stopped indepen-
dently of the adjoining group admits of the simultaneous production of a variety
of cords upon the same machine and avoids the constant stopping of the whole of
the frame during the necessary and frequent renewals of the strand bobbins or the
doffing of the twisted cord.
4. The self-acting stop motion by stopping the group immediately upon the
running bare of a bobbin or the breaking of a strand prevents the production of
"waste" and enables the attendant to take charge of a much greater number of
spindles thus increasing the production and reducing the cost.
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. The novel arrangement of both the "letting off" and the "doubling
spindles in the front of the frame and immediately under the eye of the attendant.
Secondly. The novel arrangement of the spindles and draw rollers in separate
and distinct groups in such a manner that each group is capable of being started
and stopped independently of the adjoining group.

page_text: Thirdly. The novel construction of the self acting stop motion for stopping any
individual group of spindles and draw rollers upon the running bare of the bobbin
or the breaking of one of the strands.
All substantially as hereinbefore more particularly described and illustrated by
the drawings hereunto annexed.
DL: 00
1001