Improvements in Means or Apparatus for Operating the Trap Levers of Twisting Frames Employed in Twisting Wool and other Fibres.
Year: 1887

page_text: Date of Application, 11th Mar., 1887
Complete Left, 12th Dec., 1887!
Complete Accepted, 20th Jan., 1888
PROVISIONAL SPECIFICATION.
Improvements in Means or Apparatus for Operating the Trap
Levers of Twisting Frames Employed in Twisting Wool
and other Fibres.
I PRINCE SMITH the Younger of the firm of Prince Smith & Son of Burlington
Shed Keighley in the County of York Machine Maker, do hereby declare the nature
of this invention to be as follows:-
This Invention relates to a now or improved method of relieving or the lifting up
of trap levers belonging to Twisting Frames used for Wool, Silk and Hair.
The twisting frames mentioned have what is generally a series of devices, each
called a trap lever which is kept down at one end by the drag or friction of the thread
running through a twizzle or pot guide on to the bobbin which runs on the spindle
arranged so that when one of the ends of yarn breaks or runs off the other end is
not sufficient to hold the trap lever up, consequently it drops down and comes in
contact with a projection which is cast or fixed on to a vertical roller: this vertical
roller being driven by a band, or friction plates driven by bevel wheels.
When the attendant pieces up the threads she pulls the trap lever up with her hand
which relieves the vertical roller and all goes on again. But when the whole frame
is stopped, the trap levers all fall down together and when the minder sets on the
frame, she has to pull up a long rod which goes along the side of the frame close
under the trap levers, this rod having to draw up inclines lifts all the levers up out of
contact with the upright rollers simultaneously.
The object of the present invention is to effect the connection of this lifting bar
to a screw stopper, or throwing off motion, and on the screw shaft thereof is affixed
a worm which engages into a worm wheel, this worm wheel, carried in bearings below
and combined therewith is also a cam which works a lever which is attached to the trap
lifting bar so that in twining the screw stopper, or belt fork the cam on the worm
wheel lifts the trap lever bar up before the belt has got onto the driving puller,
consequently the levers are all clear of the upright rollers before it revolves.
By these means I am enabled to effect the connecting of these two motions, that is
to say the lifting up the trap levers and the working of the belt fork or throwing off
motion at one and the same time.
HL 11th day of March 1887
WM. BROOKES & SON,
55 & 56, Chancery Lane, London,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Means or Apparatus for Operating the Trap
Levers of Twisting Frames Employed in Twisting Wool
and other Fibres.
I PRINCE SMITH the younger of the firm of Prince Smith & Son of Burlington
Shed Keighley in the County of York Machine Maker do hereby declare the nature
of this invention and in what manner the same is to be performed, to be parti-
cularly described and ascertained in and by the following statement:-
This Invention relates to a new or improved method of relieving or the lifting up
of Trap Levers belonging to Twisting Frames used for Wool Silk and other fibres.
The Twisting Frames mentioned have what is generally a series of devices each
called a trap fever which is kept down at one end by the drag or friction of the
thread running through a twizzle or pot guide onto the bobbin which runs on the
spindle arranged so that when one of the ends of yarn breaks or runs off the other
end is not sufficient to hold the trap lever up consequently it drops down and comes
in contact with a projection which is cast or fixed on to a vertical roller; this vertical
roller being driven by a band or friction plates driven by bevel wheels or worm and
wheel.
When the attendant pieces up the threads she pulls the trap levers up with her
hand which relieves the vertical roller and all goes on again. But when the whole
Frame is stopped the trap levers all fall down together and when the minder sets on
the frame she has to pull up a long rod which goes along the side of the frame close
under the trap levers this rod having to draw up inclines lifts all the levers up out of
contact with the upright rollers simultaneously.
The drawings shew one end of a Twisting Frame with my invention applied.
A is the trap lever shewn with twizzle.
B shews the tube and bobbin as used in twisting.
Cis the upright or delivery roller.
D is the screw stopper.
E is the worm wheel on the screw stopper F shews the worm wheel and cam F
combined. G is the lever with one end working in the cam F. His the trap lifter
bar connected with the other end G of the lever G. I is the handle shewing the old
method of drawing up the trap lifting bar.
The object of the present Invention is to effect the connection of this lifting bar EL
to a screw stopper or throwing off motion D and on the screw shaft thereof is affixed
a worm E which engages into a worm wheel F this worm wheel being carried in
bearings below, and combined therewith is also a cam F which works a lever G
centred on the axis G which is attached by the arm G¹ also centred on axis G² to the

page_text: trap lifting bar H so that in turning the screw stopper D or belt fork the cam Fl on
the worm wheel F is rotated and lifts the trap lever bar H. up before the beli has got
on to the loose pulley consequently the levers are all clear of the upright rollers before
they cease to revolve.
By the time the frame is stopped the pivot G³ of the lever G has got to the other
extremity of the groove in the cam as shewn by the dotted lines and in starting the
frame again, the belt has got onto the fast pulley and the spindles and rollers have all
got started before this pivot G³ drops again into its former position in the cam
groove in the wheel as shewn by the full lines in the drawing.
By these means I am enabled to effect the connecting of these two motions; that
is to say, the lifting up the trap levers and the working of the belt fork or throwing
off motion at one and the same time.
my
said
Having now particularly described and ascertained the nature of
Invention, and in what manner the same is to be performed, I declare that what 1
claim is :-
The herein described combination or arrangement and use of means or apparatus
for operating the trap levers of twisting frames employed in twisting wool and other
fibres substantially as set forth.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London,
Agents for the Applicant.
Dated the 10th day of December 1887.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London,
Agents for the Applicant.