Improvements in or Applicable to Drawing and Roving Frames Employed in Preparing Flax and other Fibrous Materials.
Year: 1889

page_text: Improvements in or Applicable to Drawing and Roving Frames
Employed in Preparing Flax and other Fibrous Materials.
I, THOMAS WATSON of Milfort Mill Belfast Ireland, Engineer 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:-
My Invention has for its object to provide simple and efficient means for protecting
the rubbers used in drawing and roving frames and also the rove or sliver being
produced in such frames from dust which is caused by the action of the heckles or
faller bars when the machines are at work. The heckles or faller bars employed in
these machines are usually propelled towards and from the drawing rollers by means
of screws the said bars when moved by one set of the screws nearly up to drawing
rollers drop onto another set of screws below by means of which lower screws the said
faller bars or heckles are returned to the end from-which they had been previously
propelled and are then elevated by cams or otherwise so as to again engage with the
upper screws to be again propelled forward as is well understood. By the falling of
these bars from the upper screws to the lower screws dust is caused to rise and in
order to prevent this dust from settling on the revolving or other rubbers and on the
sliver or rove being formed I arrange, in proximity to and between the rubbers and
the fallers, a metal or other suitable plate upon which the dust caused by the action of
the said fallers collects, and from which it may be removed as required by hand or it
may be removed therefrom automatically by imparting to the plate a jogging or
shaking motion from any suitable moving part of the machine.
Figure 1 of the accompanying drawing represents in transverse section so much of
a roving frame as is necessary to illustrate my Invention and Figure 2 is a similar
view of a drawing frame fitted with my improvements.
Referring to these drawings A and B are the drawing rollers by means of which
the fibre is drawn over the heckle bars or fallers in the usual manner. The lower
roller B is designated the boss roller and against the surface of this roller there is
fitted to rotate a revolving rubber or revolving rubbers C for the purpose of keeping
this roller clean.

page_text: Behind the roller B and between the rubbers C and the screws or slides which
actuate the fallers I fix in any suitable position as not to interfere with the proper
action of the machine a plate D (preferably of metal) as shewn in Figure 1 upon
which dust caused by the action of the fallers, will collect and be prevented from
settling on the rubbers and on the rove or sliver being formed. The arrested dust
which collects on the plate D may be removed by hand when required but I prefer to
effect the removal thereof automatically by means of the arrangement illustrated in
Figure 2.
According to this arrangement I hinge or otherwise suitably connect to the plate D
another plate D2 having arms or an arm E which is acted upon by a projection F
on the axle carrying the rubbers C which projection as the rubbers rotate depresses
the arm E thereby turning the plate D² on its hinge d so as to elevate the front
end of the said plate, when however the projection Fleaves the arm E the plate D²
will fall suddenly and come into contact with a suitable stop or with the edge of a
vessel G so that any dust that may have collected on the plates D and D2 will by
reason of the concussions of the plate D2 with the stop or vessel G fall from the plate
and be deposited in the said vessel the dust being thus prevented from depositing
the rubbers and also on the sliver or rove as it issues from the machine.
on
Having now particularly described and ascertained the nature of this Inven-
tion and in what manner the same is to be performed declare that what I
claim is-
1st. In drawing and roving frames used in treating flax and other fibrous materials,
a plate arranged between the faller bars or heckles and the drawing rollers for the
purpose of protecting the rubbers and also the rove or sliver as it is being formed,
from dust arising from the action of the fallers substantially as hereinbefore
described.
2nd. In drawing and roving frames the plates D and D2 and means for imparting a
jogging or shaking motion thereto substantially as hereinbefore described with reference
to Figure 2 of the accompanying drawings.
3rd. The combination with the subject matter of the last preceding claiming clause
of a vessel arranged in position to receive the dust from the plates as and for the
purpose herein before described.