Year: 1886

page_text: Date of Application, 8th July, 1886.
Complete Left, 4th Apr., 1887.
Complete Accepted, 6th May, 1887.
We JOHN ERSKINE, Mill Manager Wolfhill Belfast and FREDERICK WILLIAM
FINLAY, Director Wolfhill Spg. Co. Limited, Belfast do hereby declare the nature of
this invention to be as follows:-
These improvements relate especially to the wet spinning frames employed in the
production of fine flax and other yarns and consist of a novel method of driving the
retaining rollers which instead of being driven direct from the drawing rollers as in
the ordinary way, are actuated by a separate train of geering either direct from the
cylinder or pulley shaft or from another shaft connected with the intermediate wheels
that form part of the connection between the cylinder or pulley shaft and the front or
drawing rollers.
When the retaining rollers are driven by a train of geering entirely independent of
the ordinary twist geering, then it is necessary to make a corresponding change when
the twist is altered, but when the retaining rollers are driven from another shaft con-
nected with the ordinary intermediates between the twist charge pinion and front
or drawing roller wheel then the changes in the twist do not affect the draft.
By this arrangement of a separate train of geering for driving the drawing and
retaining rollers a much more regular motion is given to both the drawing and
retaining rollers than by the ordinary method of driving in which the retaining rollers
receive their motion direct from the front or drawing rollers and that generally at the
opposite end froin which the drawing rollers are driven, so the retaining rollers are
affected by the variations in torsion of the front or drawing rollers.
By a more regular motion being given to the retaining and drawing rollers more
even yarns can be produced which is especially manifest in the finer sorts.

page_text: JOHN ERSKINE Mill Manager Wolfhill Belfast and FRED. W. FINLAY
Director Wolfhill Spinning Co. Belfast do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
These improvements relate especially to the wet spinning frames employed in the
production of fine flax and other yarns and consist of a novel method of driving the
retaining rollers.
This method will be readily understood by referring to the drawing herewith in
which figure 1 is an end view of an ordinary wet spinning frame showing one method
of arranging the geering for driving the retaining rollers, figure 2 illustrates another
method and figure 3 is for the purpose of shewing the method usually employed to
drive the retaining rollers direct from the drawing rollers.
In all these figures the same letters of reference are employed to indicate like
parts.
Instead of the retaining rollers (a) being driven direct from the drawing rollers (b)
as in the ordinary way and as shewn in figure 3 the retaining rollers (a) are actuated
by separate trains of geering either direct from the cylinder (c) or pulley shaft or
from another shaft (d) connected with the intermediate wheels (e) that form part
of the connection between the cylinder or pulley shaft (c) and the front or drawing
rollers (b).
When the retaining rollers (a) are driven by a train of geering (f) entirely indo-
pendent of the ordinary twist geering (e) then it is necessary to make a corresponding
change, (which is provided for by a compensating wheel (f¹)) when the twist is altered
by changing the ordinary twist pinion.
But when the retaining rollers (a) are driven from another shaft or shafts (d) con-
nected with the ordinary intermediates (e) between the twist change pinion and front
or drawing roller wheel then the alterations in the twist do not affect the draft
or difference in the surface speeds of the retaining rollers (a) and the drawing or
delivery rollers (b).
By these arrangements of separate trains of geering for driving the drawing
rollers (b) and the retaining rollers (a) a much more regular motion is given to both
the drawing and retaining rollers than by the ordinary method of driving in which
the retaining rollers (a) receive their motion direct from the front or drawing
rollers (b) as shewn in figure 3 and that generally at the opposite end of the roller from
which the drawing rollers (b) are driven so the retaining rollers (a) are affected by the
variations in torsion of the front or drawing rollers (b).

page_text: By these arrangements larger wheels can be used on the ends of the retaining
rollers (a) and so a more even turn is given to the retaining rollers.
By a more regular motion being given to the retaining and drawing rollers more
even yarn can be produced which is especially manifest in the finer sorts.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim is
The arrangements of geering described for the purpose of giving an independent
drive to the retaining rollers of wet spinning frames so that they may not be affected
by the tremor of the front or drawing rollers.