Improvements in Machines for Twisting and Doubling Yarn.
Year: 1894

page_text: Date of Application, 7th June, 1894
Complete Specification Left, 26th Feb., 1895-Accepted, 30th Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in Machines for Twisting and Doubling Yarn.
We PRINCE SMITH, of the Firm of Prince Smith & Son, of Burlington Shed,
Keighley, in the County of York, Machine Maker and SMITH AMBLER, of the
same place Draftsman, in the employment of the said firm, do hereby declare the
nature of this invention to be as follows:-
This invention relates to the improved construction and arrangement of parts of
stop motion apparatus for twisting frames and the invention being particularly
adapted for a two folder twister we will in the present description particularly refer
to a construction designed to twist two "ends" together.
The invention has for its object to obtain increased simplicity in construction
with greater economy in manufacture of the parts; at the same time preserving
thorough efficiency in working and solidity in construction.
In order to reduce the number of separate parts and make the whole device as
compact as possible we can dispense with one of the bars: the saddle rail of a
present construction and so construct a bolster that it can be combined with and
support the upright spindle and delivery roller also the arm on which is mounted
the trap lever carrying the hinged part having formed in it the thread guide, also
the bearing for the driving shaft on which are mounted the worm gears for
driving the gears mounted upon the upright spindles carrying the delivery rollers
around which the ends or threads pass from the bobbins or the like to the twist
bobbin and spindle, as well as the pedestal for such bearing; the bolster also
carries a socket in which one of the spindles for traversing the guides works; the
bolster arm supporting the trap lever also itself forms a support for a flat bar which
is adapted for use in raising the trap levers out of harms way when starting the
frame.
The bolsters are each mounted on the rail now employed in place of the beam
commonly used in holding the skeleton of the frame together.
On the upright roller spindle is affixed or formed an enlargement or dished
support having radial stops or ribs.
Above this is mounted and rests a circular part or cored out disc within which is
mounted a latch capable of projecting through an opening in the underside of the
disc and of engaging one of the radial stops in the said support or of being
withdrawn therefrom. This latch has a loop at about its centre through which
the roller spindle passes.
This latch is lifted out of engagement by means of a hinged trigger or one of a
number (say two) of such triggers, formed each on its inner end as a wedge or
incline to lift the latch and on its outer end as a projection to be caught and
stopped in rotation by the inner end of the brake lever, and preventing the
rotation of the lever.
The operation of the parts is as follows: As long as the ends remain intact the
hreads are drawn from the bobbins in usual manner and are passed around
he delivery roller through the thread guides to the trap lever eye, keeping that
rap lever depressed in proper working position and thence down to the twister but
s soon as one thread breaks or fails the frictional strain of the remaining thread
being insufficient to keep the trap lever eye depressed, it rises causing its inner end
o fall and this end coming in the path of rotation of the triggers projecting from

page_text: the latch disc the trigger is caused to press its inclined end between the latch and
the disc and lift the latch free stopping the driving of the roller.
The latch is released by the triggers falling by gravity back to their normal
position on the pressure being removed.
The rail for lifting the brake levers out of harms way in starting the frame is
tilted on its supports raising the levers as required.
The rollers are locked to the latch disc by tongues on the latter passing into
openings on the bases of the former.
The thread guides, mounted on a spindle carried as described by a socket formed
on the bolster and operated by a part engaged by a suitable cam below, are
constructed back and front guides and connecting bar all in one and with suitable
fingers; each of the compound guides is fastened to the longitudinal bar affixed to
the lifter spindle.
Dated the 7th day of June 1894.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Machines for Twisting and Doubling Yarn.
We PRINCE SMITH, of the Firm of Prince Smith & Son of Burlington Shed,
Keighley, in the County of York, Machine Maker, and SMITH AMBLER, of the
same place, Draughtsman, in the employment of the said firm, do hereby declare
the nature of this 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 the improved construction and arrangement of parts of
stop motion apparatus for twisting frames and the invention being particularly
adapted for a two folder twister we will in the present description particularly
refer to a construction designed to twist two "ends" together.
The invention has for its object to obtain increased simplicity in construction
with greater economy in manufacture of the parts; at the same time preserving
thorough efficiency in working and solidity in construction.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a cross section of so much of a frame as will serve to illustrate our
invention.
Fig. 2 is a sectional view to an enlarged scale of the latch J and parts adjacent
thereto.
Fig. 3 shews in plan view the same parts as are shewn in Fig. 2.
Fig. 4 shews by an external side view the parts K and 1.
Figs. 5, 6 and 7 shew by side, plan and edge views the form of the part K.
Fig. 8 shews by side view and Fig. 9. by plan view the latch J separately.
Fig. 10 shews a plan view of the part M.
Fig. 11 shews a plan view of some of the parts shewn by Fig. 1 and to a like
scale.
Fig. 12 shews an external side view of some of the parts of Fig. 1 drawn to a
larger scale and Fig. 13 shews a plan thereof.
In order to reduce the number of separate parts and make the whole device
as compact as possible we can dispense with one of the bars: the saddle rail
of a present construction and so construct a bolster N that it can be combined
with and support the upright spindle H and delivery roller B also the arm O
on which is mounted the trap lever F carrying the hinged part having formed

page_text: in it the thread guide F', also the bearing for the driving shaft on which are
mounted the worm gears Q for driving the gears mounted upon the upright
spindles H carrying the delivery rollers B around which the ends or threads C
pass from the bobbins A or the like to the twist bobbin and spindle G as well as
the pedestal for such bearing; the bolster N also carries a socket S in which one
of the spindles for traversing the guides D, E, works; the bolster arm O
supporting the trap lever F also itself forms a support for a flat bar R which is
adapted for use in raising the trap levers F out of harms way when starting the
frame.
The bolsters N are each mounted on the rail now employed in place of the beam
commonly used in holding the skeleton of the frame together.
On the upright roller spindle H is affixed or formed an enlargement or dished
support M having radial stops or ribs.
Above this is mounted and rests a circular part or cored out disc I within which
is mounted a latch J capable of projecting through an opening in the underside of
the disc I and of engaging one of the radial stops in the said support M or of being
withdrawn therefrom. This latch J has a loop at about its centre through which
the roller spindle passes.
This latch J is lifted out of engagement by means of a hinged trigger K or one
of a number (say two) of such triggers, formed each on its inner end as a wedge or
incline to lift the latch J and on its outer end as a projection to be caught and
stopped in rotation by the inner end of the brake lever F, and preventing the
rotation of the roller B. The trap lever F swings on its axis P and its inner end
is made heavier so that when a thread breaks it falls into the path of the projection
on the trigger.
The operation of the parts is as follows: As long as the ends remain intact the
threads Care drawn from the bobbins A in usual manner and are passed around
the delivery roller B through the thread guides D, E, to the trap lever eve F¹,
keeping that trap lever F depressed in proper working position and thence down to
the twister G but as soon as one thread breaks or fails the frictional strain of the
remaining thread being insufficient to keep the trap lever eye F¹ depressed, it
rises causing its inner end to fall and this end coming in the path of rotation of
the triggers K projecting from the latch disc the trigger is caused to press its
inclined end between the latch J and the disc I and lift the latch J free stopping
the driving of the roller B.
The latch J is released by the triggers K falling by gravity back to their normal
position on the pressure being removed.
The pins on which the triggers are mounted are placed at such an angle as to
cause them to fall by gravity when the trap lever is removed.
The rail for lifting the brake levers out of harms way in starting the frame is
tilted on its supports raising the levers as required.
The rollers B are locked to the latch discs by tongues L on the latter passing
into openings in the bases of the former.
The thread guides D, E, mounted on a spindle carried as described by a socket S
formed on the bolster and operated by a part engaged by a suitable cam below, are
constructed back and front guides and connecting bar all in one and with suitable
fingers each of the compound guides D, E, is fastened to the longitudinal bar
affixed to the lifter spindle.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we.
claim is :-
1. In machinery for twisting or doubling yarn, the construction and arrangement
or combination of parts of stop motions so as to co-operate together, substantially
as and for the purposes set forth.
2. In machinery for twisting or doubling yarn, the construction, arrangement or
combination, and method of operating the latch and triggers, the bolster carrying

page_text: said parts, the thread guides and trap lifting bar, all substantially as and for the
purpose set forth and illustrated by the drawings.
Dated the 23rd day of February 1895.
WM. BROOKES & SON,.
55 & 56, Chancery Lane, London, Agents for the Applicants.