Doubling Machines.
Year: 1886

page_text: Doubling Machines.
I ROBERT BROADBENT of the Phoenix Iron Works, Stalybridge in the County
of Cheshire, Machinist do hereby declare the nature of my invention for A NEW
OR IMPROVED SELF ACTING STOP MOTION FOR WINDING AND DOUBLING MACHINES
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
My Invention relates to winding and doubling frames in which one or more
threads are drawn from cops bobbins or swifts and wound on to a cylindrical or
conical spool or tube rotated by contact with a driving drum and consists in a new
or improved combination of parts or mechanism for the purpose of lifting the spool
or tube off the driving drum and stopping the winding on when one of the threads
breaks or is absent.
In order that this invention may be more readily understood and carried out,
I have hereunto appended a sheet of drawings having marked thereon letters of
reference, similar letters denoting similar parts in the different figures. Figure 1
represents a side view of the mechanism with the different parts in the positions
they occupy while the winding on proceeds, and figure 2 a front view of the same,
only such portions of the machine being shewn as are required for the purpose of
describing my invention and its action. The spool or tube a is placed upon a
spindle or provided with centre pegs at the ends and placed in a swing frame b
The spool
which by its weight holds the spool or tube in contact with the drum c
or tube and the drum may both be cylindrical as shewn on the drawings or conical,
and the drum rotated in any suitable ordinary manner. The swing frame b is
hinged by preference upon a rod d supported by brackets attached to the machine
framing or may be formed with pivots at the ends working in brackets fixed to
the machine. A bracket is fixed upon the rod d or other part of the machine
framing and carries a stud on which the three armed or double bellcrank lever f can
oscillate. One arm of this lever reaches underneath one side of the swing frame b
and a weight or spring is attached to the second arm, while the third arm carries a
stud on which the latch lever g is movable. A notch or its equivalent is formed on
the latch lever by means of which it catches on the catch plate h attached to the
077

page_text: front beam i of the machine and holds the double bellcrank lever f in the position
shewn on figure 1, so that the swing frame b can press upon the spindle or pegs of
the spool or tube a and hold the latter in contact with the drum. The threads ; j
are drawn off cops bobbins or swifts and conducted over guide rods and through
thread guides in any ordinarily used manner to the spool or tube a and each thread
is passed separately through a curl formed on the top of a detector wire k. Three
threads and detector wires are shewn on the drawings but any other number may
be used. The detector wires are shewn in full size on figures 4 and 5 and are bent
in their middle parts to form oblong eyelets and placed in slots formed in a plate
or bracket fixed to the front rail of the machine. A wire l' is passed through
the plate and the eyelets of the detector wires k. While the threads are in tension
they lift the detector wires so that the bottom side of the eyelet is held against the
wire as shewn on figure 1, but when one of them breaks or comes to an end the
wire drops down into the position shewn on figures 4 and 5. The bottom ends of
the detector wires pass through holes widened out at the top in a bar m¹ projecting
from the side of a lever m which swivels on a stud fixed in a bracket n which is
formed on or fixed to the plate l or attached to the beam of the machine. Below
the detector wires is placed a rotating shaft o with spiders teeth or projections or
instead thereof a vibrating shaft with fingers may be used. While the detector
wires are held up by the threads, the teeth or equivalent parts pass under them,
but when a thread breaks or comes to an end and its wire drops into the position
shewn on figures 4 and 5, the teeth catch it and cause it to swivel on the wire l'as
a fulcrum and move the bar m¹ and the lever m forward. In the top of this lever
a notch with an inclined bottom surface m' and on the latch lever g a branch or
projection g¹, with a lateral peg gå, are formed and as the lever m is moved forward
the inclined surface m³ acts on the peg 9' and lifts the latch lever till it is free of
the catch plate h, when the weight or spring on the double bellcrank leverf causes
the latter to swivel on its fulcrum and the arm reaching underneath the swing
frame b to lift it and raise the spool or tube out of contact with the rotating drum
and thus stop the winding on of the threads. The latch lever g at the same time
moves forwards and the peg 92 acting on the front side of the notch in the lever m
pushes the latter further forward until the lever g is arrested by a stop g³ formed
on it or equivalent means, when the lever m falls further forward till arrested by
the peg 9 whereby the detector wires are moved out of reach of the rotating spider
or vibrating finger and the different parts are brought into the positions shewn on
figure 3. When the attendant has pieced up the thread, she pushes the latch
lever g back while holding the detector wires up by the threads until the notch on
the lever catches on the plate h, when all the parts are returned to the positions
shewn on figure 1 and the winding recommences.
In order to arrest the rotation of the spool or tube quickly when it is lifted off
the rotating drum a brake may be applied in any ordinary known manner but
I prefer to use the arrangement shewn particularly in detail by figures 6, 7, 8 and 9.
The slot or groove in the swing frame b for holding the spindle or pegs of the
bobbin is made in the form shewn and while the winding proceeds the spindle or
pegs of the spool or tube are in the upper semicircular recess p¹ as shewn on
figure 1 but when the swing frame lifts they drop into the lower recess p³. A
peg p³ is fixed in the swing frame and another peg p' in the end of the spool or
tube when it is conical or made with flanges as shewn on figures 6 and 7 or in the
side of the tube when it is cylindrical as shewn on figures 7 and 8. The peg p³ is
so placed that the peg p* comes against it when the swing frame is lifted and the
spool in the position shewn on figures 6, 7, 8, 9, but when the swing frame rests on
the spindle or pegs of the spool or tube as shewn on figure 1 the pegs can pass each
other without coming into contact. They are formed with curved or inclined
surfaces on the opposite sides from those on which they come in contact when the
swing frame is lifted, so that when the spool or tube is rotated in the opposite
direction by the attendant drawing off the threads for the purpose of piecing up,
the pegs can slip over one another by slightly raising the spool.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I desire it to be
understood that I do not confine myself to the details of the different parts and
their arrangement as shewn on the drawings, but I declare that what I claim is :-
In winding and doubling machines the combination with a rotating spider or
vibrating finger of detector wires k, a lever m with bar m¹ and incline m³, latch
lever g, catch plate h and weighted bellcrank lever f substantially as and for the
purpose hereinbefore described and set forth.