Improvements in Apparatus for Twisting and Doubling Yarns.
Year: 1894

page_text: Date of Application, 1st Nov., 1894
Complete Specification Left, 30'h Apr., 1995-Accepted, 1st June, 1895
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, Manchester, in the County of Lancaster, do
hereby declare the nature of this invention to be as follows:-
This invention refers to improvements on the invention described in the
Specification of our former Patent No. 23751 of 1893 relating to trap twisting
frames, and is designed to improve the trap or stop motion and render it quicker in
stopping the trap roller when a thread or end breaks.
It consists essentially in constructing a trap motion with a lever or weight
pivoted to a stationary part of the frame for the purpose of throwing out of gear
the pivoted lever or bracket by which the spindle is connected with the driving
wheel; this pivoted weight or weighted-lever being held up or supported by
a pivoted catch or prop which is pushed forward by a loose tail on end of trap lever
when the latter falls and is first engaged with a wiper or snug rotating with the
shaft on which are the helical or other wheels for driving the trap roller and then
with the pivoted catch or prop to push it forward and release the pivoted weight or
weighted-lever allowing it to fali and stop the trap roller.
The gearing for actuating the delivery or trap motion and the mechanism for
connecting the driving wheels with the spindle, and by which the spindle can be
thrown out of contact with the wheel which drives it, are similar to that described
in the Specification of our said Patent No. 23751 of 1893.
Instead of relying on the weight of the trap lever when it falls to throw out of
gear the pivoted lever or bracket which holds the spindle in contact with the
wheel, we employ a pivoted weight which the trap lever on falling releases, and
thus we are enabled to make the trap lever much lighter and more sensitive and
yet obtain a greater weight on the pivoted lever or bracket thereby more quickly
stopping the trap roller.
At the back of the spindle or in other convenient position is pivoted a weight or
weighted lever which when not supported or held up falls forward of its own
gravity. This weight is preferably annular or made with an annular end or part
to encircle the spindle so as to engage with the pivoted lever or bracket carried by
the spindle at whatever part of its revolution it falls. The lever may, however, be
of other convenient shape or construction.
Hinged or pivoted to a bracket or to the beam in front of the pivoted weight or
weighted lever is placed a catch or prop on which it rests and by which it is held
up when the trap roller is running.
The shaft, on which are placed the helical or other wheels for driving the trap
collers, is provided with a wiper or lug which rotates with the shaft or this lug may
be attached to or form part of the boss of the driving wheels.
The trap lever at its tail or rear end is constructed with a loose pivoted lever or
inger of approximately S shape or other convenient shape, and at one side of this
inger is placed a projecting pin which is situated behind the supporting catch or
rop of the weight. When the trap lever falls the lower end of the loose pivoted
ever engages with the rotating wiper on the driving shaft and is drawn down or
noved forward thereby; this causes the pin projecting from its side to move the
upporting catch or prop which holds up the pivoted weight. On the movement of

page_text: the catch or prop the weight immediately falls and throws the spindle out of gear.
The pin travels down an incline and behind an arm or bracket and is thereby
prevented remaining in or coming again into contact with the wiper on the driving
shaft.
When the trap lever is raised the tail or rear end lifts the pivoted weight or
weighted lever and the supporting catch falls into position to hold it up until the
trap lever again falls.
Dated this 21st dov of Autobar 1901.
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, Manchester, 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 refers to improvements on the invention described in the
Specification of our former Patent No. 23751 of 1893 relating to trap twisting
frames, and is designed to improve the trap or stop notion and render it quicker in
stopping the trap roller when a thread or end breaks.
It consists essentially in constructing a trap motion with a lever or weight
pivoted to a stationary part of the frame for the purpose of throwing out of gear
the pivoted lever or bracket by which the spindle is connected with the driving
wheel this pivoted weight or weighted lever being held up or supported by a pivoted
catch or prop which is pushed forward by a loose tail on the end of trap lever when
the latter falls and is first engaged with a wiper or snug rotating with the shaft ou
which are the helical or other wheels for driving the trap roller and then with the
pivoted catch or prop to push it forward and release the pivoted weight or weighted
lever allowing it to fall and stop the trap roller.
It will be fully described with reference to the accompanying drawing which is
an end elevation partly in section through the beam of the machine showing sufficient
to illustrate the invention.
The gearing for actuating the delivery or trap motion and the mechanism for
connecting the driving wheels A with the spindle B and by which the spindle can
be thrown out of contact with the wheel A which drives it are similar to that
described in the Specification of our said Patent No. 23751 of 1893.
In our former invention we relied upon the weight of the trap lever C when it
fell to throw the pivoted lever or bracket D out of gear or out of contact with the
driving wheel A. We now employ a pivoted weight E which is released by the
trap lever C and allowed to fall when the trap lever itself falls, and thus we are
enabled to make the trap lever much lighter and more sensitive and yet obtain
a greater weight on the pivoted lever or bracket thereby more quickly stopping the
trap roller.
The weight or weighted lever E is pivoted on a rod or pine at the back of the
spindle B or in any other convenient position so that when not supported or held
up it falls or rotates about its axis of its own gravity. The weight E at its forward
end is preferably annular to encircle the spindle B so that when it falls it may
engage with the pivoted lever or bracket D at any point in its revolution. The
lever E may however be of any other convenient shape or construction.

page_text: A supporting catch or prop F is placed in front of the weighted lever E to
support it or hold it up out of contact with the pivoted lever D when the trap
roller is running. The prop F is hinged or pivoted to the beam G by the snugs
or brackets 9 and is capable of being moved backwards and forwards on its pivot
to support or release the weighted lever E.
g
On the driving shaft H or on the boss of the helical driving wheels A¹ we affix
one or two wipers or lugs which rotate with the shaft.
The trap lever C is constructed at its tail or rear end with a loose lever or
finger J of approximately S or other convenient shape pivoted to it. At one side
of the loose lever Ja pinj projects extending out behind the supporting catch or
prop F. The pin j rests against the catch or prop F and the extreme end of the
loose lever J when lowered is brought into contact with one of the wipers on the
driving shaft H.
In operation when an end of yarn breaks and the trap lever C falls (into the
position shown in the drawing) the extreme or lower end of the loose pivoted
lever J engages with the rotating wiper h on the driving shaft H and is drawn
down or moved forward thereby; this causes the pin j projecting from its side to
press against and move back the supporting catch or prop F which holds up the
pivoted weight. On the movement of the catch or prop F the weight or weighted
lever E immediately falls upon the pivoted lever D and throws the spindle B out
of gear. The pin travels down an incline and behind an arm or bracket K and is
thereby prevented remaining in or coming again into the contact with the wiper h
on the driving shaft H.
aj
When the trap lever C is again raised the tail or rear end lifts the pivoted weight
or weighted lever E and the supporting catch F falls into position to hold it up
until the trap lever again falls.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what we
claim is :-
1. A trap or stop motion for twisting and doubling frames constructed with
a weight or weighted lever for throwing out of gear the lever by which the spindle
is connected to the driving wheel pivoted independently of the trap lever and held
up or supported by a catch or prop which is drawn back and releases the weight
when the trap lever falls substantially as described.
2. In a trap or stop motion for twisting and doubling frames a trap lever formed
with a pivoted lever J at its tail end in combination with a rotating wiper (h) on
the driving shaft which engages with the pivoted lever J when the trap lever falls
a separate pivoted weight or weighted lever E which falls on and throws out of
gear the lever D and a prop or support F which is drawn back to release
the weight E by the loose lever pivoted to the trap lever substantially as
described.
3. A trap or stop motion for twisting and doubling frames having the several
parts constructed and arranged in combination substantially as and for the purpose
described and shown.
Dated this 29th day of April 1895
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.