IMPROVEMENTS IN DRAWING. FRAMES
Year: 1857

page_text: PROVISIONAL SPECIFICATION left by Thomas Daniel at the Office of the
Commissioners of Patents, with his Petition, on the 9th June 1857.
I, THOMAS DANIEL, of Darley Mills, near Derby, in the County of Derby,
in the employ of Walter Evans and Company, of Darley Mills, aforesaid, do
hereby declare the nature of the Invention for "IMPROVEMENTS IN DRAWING.
FRAMES," to be as follows:-
The
This Invention is adapted for drawing frames, and has for its object the
prevention of waste cotton being made in case of a lump being passed through
the drawing rollers, or in case of the cotton being delivered from the drawing
rollers too light, owing to the rollers lapping, or from other causes, or in case-
the drawn cotton should break down altogether. The Invention is intended
to be applied to drawing frames which have self-stopping motions on the feed.
plate for each sliver, but might be applied where that is not the case.
mouthpiece through which the drawn cotton passes is fixed upon one end of a
lever (and works upon a hinge to facilitate cleaning the calendar rollers, &c.):
At the other end of the same lever is a balance weight, and the lever works
freely upon a fulcrum between the mouthpiece and the balance weight..
This weight is so adjusted as slightly to overbalance the mouth. piece, and the
drawn cotton while passing full weight through the mouthpiece exerts a
sufficient drag upon the mouthpiece to prevent the weight at the other end

page_text: of the lever from falling; but when the drawn cotton becomes too light, the
drag upon the mouthpiece being reduced, allows the weight at the other end
of the lever to fall. There is an arm from the lever, which reaches to the
knife belonging to the self stopping motions on the feed plate, and which
knife throws the frame out of gear when any of them fall down, and upon
the end of this arm of the lever is a notch, which acts upon the knife and
throws the frame out of gear when the arm of the lever falls (consequent on
the mouthpiece rising), in the same manner as the self-stopping motions on
the feed plate when they fall. By this means the frame is stopped at once
when the drawn cotton begins to pass the mouthpiece too light, or if it should
break down altogether. When a lump, having passed through the drawing
rollers, reaches the mouthpiece, the tension exerted by the calender rollers
upon the lump of cotton passing somewhat tightly through the hole in the
mouthpiece overcomes the excess in weight of the balance weight above the
mouthpiece, and the mouthpiece is consequently lowered, while the balance
weight and arm of the lever are raised. Upon the feed plate of the frame is
a detached weight, the top of which reaches the upper end of one of the
stopping motions on the feed plate, over which a sliver runs. A pin is fixed
into this detached weight, which pin passes through the feed plate above the
arm of the lever, and this pin is struck by the upper side of the arm of the
lever when the lever is raised by the mouthpiece being depressed. The
detached weight is made light enough to be raised when the mouthpiece
falls from a lump of cotton reaching it, and thus causing the arm of the lever
to strike the pin of the detached weight, and the self-stopping motion in the
feed plate, with which the detached weight is in contact, is then thrown down
by the rising of the detached weight, and the frame is thereby stopped as
soon as the lump begins to be drawn through the hole in the mouthpiece.