Improvements in Apparatus for Twisting and Doubling Yarns.
Year: 1893

page_text: Date of Application, 9th Dec., 1893
Complete Specification Left, 14th Mar., 1894-Accepted, 14th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Twisting and Doubling Yarns.
We, SAMUEL HERBERT BROOKS, Machine Maker, RICHARD ALEXANDER
DOXEY, Machine Maker, and JOHN SAMUEL BROOKS, Sub-Manager, all of The
Union Iron Works, West Gorton, in the County of Lancaster, do hereby declare
the nature of this invention to be as follows:-
This invention relates to what are known as trap twisting frames and is designed
with the object of giving positive motion to the trap roller and rendering the trap
or stop motion more sensitive and quicker in action on the breaking of a thread
than others that are at present in use.
In carrying out the invention we employ helical spur gearing to give a positive
drive to the delivery or trap roller the motion being conveyed from one of the
wheels to the roller by a bracket which engages therewith pivoted or otherwise
attached to the spindle so as to have a movement (lateral or vertical) independent
of the rotating movement of the spindle whereby it can be moved out of contact
with the wheel.
The face of the wheel is constructed with one, two or more projecting lugs and
the pivoted bracket with a depending lug or catch which when in normal position
engages or comes in contact with one of the lugs on the face of the driving wheel.
On its upper side the movable or pivoted bracket is provided with a pin, lug, or
arm projecting upward upon which the end of the trap lever falls or engages to
throw it out of gear with the driving wheel. The spindle which carries the trap
roller may be of any ordinary or suitable form though at present we prefer to
employ the construction known as a Rabbeth spindle.
The tail end of the balanced trap lever is constructed of annular or other suitable
form or with an annular or other bracket attached thereto to operate the stopping
of the roller at any point in the rotation of the pivoted bracket. On the end of the
lever falling the annular tail or end will rest upon or engage with the pin or lug
projecting from the pivoted bracket and so by overbalancing or otherwise move
the bracket out of its normal position and out of gear or contact with the driving
wheel thus stopping the rotation of the spindle and measuring drum.
The end of the trap lever we make tubular or otherwise to receive one, two
or more balls and set it when in normal position slightly inclined towards the
pivot upon which it turns.. When in this position the balls remain near the pivot
but when it falls the balls run down to the other end and increase the weight.
By this arrangement we can have the lever very lightly balanced and at the
same time when it is overbalanced by the breaking of an end the weight to
actuate the pivoted bracket or to throw the measuring drum out of gear is
increased.
At the back of the beam we place a driving shaft running longitudinally of the
machine which carries the helical wheels which drive the delivery or trap rollers
and at the foot of each spindle in a plane at right angles to the driving wheels
we place a corresponding helical spur wheel through which a positive or direct
driving motion is conveyed to the roller. The driven wheel at the foot of each
spindle is placed to rotate loosely on the bolster or collar in which the spindle
rotates and is provided on its upper surface with one, two or more projecting lugs
or pins.
The spindle may be of any convenient construction and to it we fit a small
bracket preferably pivoted capable of being moved by swinging horizontally. This
bracket is connected to the spindle so that the two rotate together and when in

page_text: .
normal position engages by means of lugs with the projecting lugs or pins on the
gear wheel and conveys motion from it to the spindle. The bracket is provided
with a projecting lug, pin, stud, or the like which when the trap lever falls engages
or comes in contact with the end and is thereby moved out of contact with lugs or
pins projecting from the face of the gear wheel.
Instead of forming the pivoted bracket with an annular end it may be provided
with a pin or stud and the bracket provided with an annular surface to engage
therewith but we prefer the first arrangement described.
The bracket is returned to its normal position by its own gravity or by a spring
it being preferably pivoted on one side or eccentrically.
The action of the trap lever when it falls and the rotating bracket comes in
contact with the end is to move the bracket clear of the lugs on the wheel and stop
its rotation. It is allowed to return to its central or normal position by pressing
down the front part of the trap lever which lifts the back end clear of the projecting
pin or lug.
The trap levers are adjusted or balanced by a small weight sliding on the front
end through which a screw carried in two little brackets or lugs passes, the weight
being moved backwards or forwards into any position by rotating the screw in one
direction or the other, or by nuts placed upon the screw.
A rod may be placed longitudinally of the machine in front of the spindles
mounted on links or inclines or other device by moving which longitudinally the
back ends of all the trap levers can be lifted simultaneously and suitable stops are
provided to prevent either of the parts moving too far in either direction.
Dated this 5th day of December 1893.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Twisting and Doubling Yarns.
We, SAMUEL HERBERT BROOKS, Machine Maker, RICHARD ALEXANDER
DOXEY, Machine Maker, and JOHN SAMUEL BROOKS, Sub-Manager, all of
The Union Iron Works, West Gorton, in the County of Lancaster, 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 principally to what are known as trap twisting frames and
-is designed with the object of giving positive motion to the trap roller and rendering
the trap or stop motion more sensitive and quicker in action on the breaking of a
thread than others that are at present in use.
It will be fully described with reference to the accompanying drawings in which
sufficient of a frame is shown to illustrate the invention.
Fig. 1. Transverse section showing side elevation of the improved trap motion.
Fig. 2. Plau.
Fig. 3. Sectional elevation and plan of modified form of trap lever.
Fig. 4. Sectional elevation and plan of another modification of trap lever.
Fig. 5. Sectional elevation and plan of a further modification.
Fig. 6. Side elevation and plan of the bracket or lever E.
Fig. 7. Front elevation of the rod N.,
The delivery roller A and the spindle B may be of any ordinary construction
but we at present prefer to employ that known as a Rabbeth spindle.
We drive the spindle B by helical spur gearing to give a positive motion to the
delivery or trap roller. A wheel C is placed at the foot of each spindle into which
gears a wheel D on a horizontal shaft d and the motion is conveyed from these

page_text: wheels to the roller A. and spindle B by a bracket or lever E attached to the
spindle with which the wheel comes in contact and which is capable of being moved
out of contact with the wheel it having a movement independent of the rotating:
movement of the wheel.
The wheel C is constructed with one, two, or more lugs e projecting therefrom:
to engage with the pivoted lever or bracket E.
The bracket or lever E (shown in detail Fig. 6) is pivoted to one side of the
spindle B near the bottom on the pin and on the under side it is provided with a
depending lug or catch e which when in normal position engages or comes in
contact with one of the lugs c on the face of the driving wheel C and as the
driving wheel rotates the lever E and the spindle B are rotated by it. On its
upper side the pivoted lever or bracket E is provided with a pin or lug e' which
projects from its upper surface and with which the end of the trap lever F engages
when it falls to throw the lever or bracket E out of gear or contact with the
driving wheel C for the purpose of stopping the rotation of the roller A.
The balanced trap lever is constructed with the tail end which engages with
the pin el on the pivoted lever or bracket E of annular or other suitable form that
will engage with the pin e' at any point in the rotation of the lever or bracket E.
and so disengage and stop the roller instantly on the falling of the trap lever..
When the trap lever falls the annular tail piece f comes in contact with the pin e
projecting from the pivoted lever or bracket E the weight of the trap lever
moving it out of its normal position and the lug e out of gear or contact with the
lugs on the face of the driving wheel C thus stopping the rotation of the
spindle B and delivery drum A. When the annular end of the trap lever is
raised the pivoted lever or bracket E is returned to its normal position by its
own gravity or by a spring, it being preferably pivoted on one side or
eccentrically.
To render the trap lever F more sensitive and effective and give it sufficient
weight to move the pivoted lever or bracket E we construct it of tubular form at
one or both ends to receive and we supply it with one, two or more balls G or
other moving body by the movement of which when the trap lever falls the weight
is increased and concentrated at the tail end to operate the lever E. The trap.
lever may be constructed with the tubular portion in any suitable position and in
place of the balls may be substituted another suitable moving body such as
mercury or a liquid but at present we prefer to employ the balls G. It will also
be evident that instead of being tubular the trap lever may be made with a
suitable race or path over which the balls or other sliding or moving body or
weight may travel they being maintained in position by any suitable casing or
covering. The trap lever F is pivoted upon a suitable bracket H placed on the
rail K.
In Figs. 1 and 2 we show the form of trap lever we at present prefer formed
tubular at both ends with balls G in each. In Fig. 3 the lever is shown tubular at
the tail end only. In Fig. 4 it is shown with a single tube running throughout its.
length, and in Fig. 5 the front end only is made tubular. By this construction we
can have the trap lever very lightly balanced and at the same time provide that
when it is overbalanced by the breaking of an end of the yarn or thread the weight
to actuate the pivoted lever or bracket E or to throw the delivery drum A out of
gear is greatly increased.
Instead of forming the trap lever F with an annular tail piece it may be
provided with a pin or stud at the tail end and the bracket or lever E be provided
with an annular surface to engage therewith instead of the pin e' but we prefer the
first arrangement described.
The trap levers F are adjusted or balanced by a small sliding weight L on the
front end through which a screw M carried in two small brackets or lugs m passes,
the weight L being moved backwards and forwards into any position by rotating
the screw in one direction or the other, or by nuts placed upon the screw.
A rod N may be placed longitudinally of the machine in front of the spindles

page_text: mounted on links n or inclines or other device by moving which longitudinally the
tail ends of all the trap levers F can be lifted simultaneously and suitable stops
such as O are provided to prevent either of the parts moving too far in either
direction.
At the back of the beam P we place the driving shaft d running longitudinally
of the machine which carries the helical wheels D which drive the delivery or trap
rollers and at the foot of each spindle in a plane at right angles to the driving
wheels we place the corresponding helical spur wheel C through which a positive
or direct driving motion is conveyed to the roller. The driven wheel C at the foot
of each spindle is placed to rotate loosely on the bolster or collar C in which the
spindle rotates.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. In twisting or doubling frames the combination with the delivery roller A
and spindle B of the helical spur wheels C and D for imparting a positive motion
thereto the wheel C being provided with lugs on its face, and the lever or bracket E
pivoted to the spindle which engages with the wheel C and by which motion is
transmitted to the spindle and roller substantially as described.
2. In twisting or doubling frames a lever so formed that when, by the breaking
or absence of the thread it overbalances or falls and its position is altered an
increased weight is obtained at one end of the lever by an automatically moving
body or substance substantially as and for the purpose described.
3. A trap lever for twisting or doubling frames constructed with an annular end
or tail piece which falls upon and engages at any point of its rotation with a pin
projecting from a lever pivoted to the spindle substantially as and for the purposes
described.
4. In twisting or doubling frames the combination with the trap lever of a screw
such as M with a sliding weight L thereon placed at the side of the lever by
which its balance can be adjusted substantially as described.
5. A trap lever for twisting or doubling frames constructed substantially as
described and shown in either Figs. 1 and 2, Fig. 3, Fig. 4, or Fig. 5 of the
drawings.
6. A trap motion for twisting or doubling frames having the several parts
constructed and arranged in combination substantially as described and shown.
Dated this 13th day of March 1894.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.