Improvements in and in Machines for Preparing Flax for Spinning.
Year: 1897

page_text: PRUYIOIONAL OLIVATION.
Improvements in and in Machines for Preparing Flax for Spinning.
I, HENRY MERCER GIRDWOOD, of Broughton Flax Mills, Salford, in the
County of Lancaster, Flax Spinner, do hereby declare the nature of this in-
vention to be as follows:-
My invention relates to improvements in and in machines for preparing flax
for spinning, and the chief object of my improvements is to inorease the produc-
tion of rove without increasing the number of roving machines employed
in preparing the fibres for spinning.
"
"
"
It is necessary in spinning the best linen yarn to double two roven" together
on the spinning frame which is called spinning "double rove," and this yarn is
much more level and stronger than yarn spun from a single rove even if the
latter is spun on half the "draft" of tho double rove.
"
"
In order to prepare the necessary amount of" rove to supply double "rove"
to all the spinning frames it has been found necessary in most flax spinning mills
to largely increase the preparing machinery. As an alternative two slivers of
flax have been fed into the gill box which forms part of the roving frame and
passed through the machine together, and the rove thus produced has been
wound upon a bobbin in the machine and in this case as the two ends were mixed
together and subjected to the same drawing in the roving frame and passed from
it in a single rove no appreciable advantage was gained.
"
"
"3
According to my invention I lead two slivers into the roving frame and pass
them separately through the machine and from the front drawing rollers and
then twist and wind them together as double " rove upon one bobbin.
"
To effect this I double the back conductors, the gills, the front conductors
and also the pressing drawing rollers, so that the two alivers can be run through
the roving frame as separate ends and be wound upon a single bobbin.
"
1)
In this manner and by these means I am able to produce double rove
from two slivers passed separately through the roving frame and having all the
advantages of double "rove" produced by doubling two separate ends of
together on the spinning frame and thus practically double the output of the
machine.
rove
وو
In like manner if desired more than two slivers could be passed separately
through the roving frame and be wound upon a single bobbin as described.
Dated this 2nd day of December 1897
H. B. BARLOW & GILLETT,
Agents for Applicant.

page_text: Improvements in and in Machines for Preparing Flax for Spinning.
I, HENRY MERCER GIRDWOOD, of Broughton Flax Mills, Salford, in the
County of Lancaster, Flax Spinner, do hereby declare the nature of this in-
vention 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 improvements in and in machines for preparing flax
for spiuning, and the chief object of my improvements is to increase the produc-
tion of "rove "without increasing the number of roving machines employed
in preparing the fibres for spinning.
"
"
"
i
"
97
It is necessary in spinning the best linen yarn to double two roves" together
on the spinning frame which is called spinning double " rove," and this yarn is
much more level and stronger than yarn spun from a single
rove even if the
latter is spun on half the "draft" of the double "rove."
In order to prepare the necessary amount of rove to supply double rove
to all the spinning frames it has been found necessary in most flax spinning mills
to largely increase the preparing machinery. As an alternative two slivers of
flax have been fed into the gill box which forms part of the roving frame and
passed through the machine together, and the "rove" thus produced has been
wound upon a bobbin in the machine but in this case as the two ends were mixed
together and subjected to the same drawing in the roving frame and passed from
it in a single rove no appreciable advantage was gained.
11
"
According to my invention I lead two slivers into the roving frame and pass
them separately through the machine and from the front drawing rollers and
then twist and wind them together as double "rove"
upon one bobbin.
To effect this I double the back conductors, the gills, the front conductors
and also the pressing drawing rollers so that the two slivers can be run through
the roving frame as separate ends and be wound upon a single bobbin.
In the accompanying sheet of drawings,
Figure 1 is a transverse vertical section, Figure 2 a front elevation (with part
removed) and Figure 3 a plan of part of a flax roving frame constructed and
arranged according to my invention. Figures 4 and 5 are sectional elevation and
plan respectively of one of the front conductors.
In the drawings, 1 denotes the frame of the machine, 2 the sliver cans, 3 the
slivers, 4 the sliver pulleys, 5 the back conductors, 6, 7, 8 the drag rollers, 9 a
slotted guide plate, 10 the gills or fallers, 11 the front conductors, 12 the front
drawing roller, 14 the top or weighted presser roller, 15 guide pins, one for each
pair of roves, 16 the flyers and 17 the bobbins.
As clearly shown in the drawings for the purposes of my invention I double
the number of slivers 3 and sliver cans 2 und in order to lead two slivers through
the frame in place of each single sliver as formerly I double the sliver
pulleys 4, the back conductors 5 and also preferably employ the guide plate 9
with a separate guide slot for each sliver as clearly shown in Fig. 2 und placed
between the drag rollers and the gills 10. I divide the gill pins in the fallers 10
by leaving a space 18 between each set of pins and thus providing a separate
set of pins for each sliver as clearly shown in Fig. 3 in order that each sliver
may puss forward separately without being mixed until after it has passed
through the pressing drawing rollers 12 and 1t. I also double the front con-
ductors 11 see Figs. 4 and 5 as well as the pressing drawing roller 14
see Figs. 2 and 3. I prefer to employ the guide pins 15 between
the flyers 16 and the pressing drawing rollers 12 and 14 in order that the atten-

page_text: dant may be able to see at a glance whether two roves are coming through to
each bobbin 17 which is not so easy to see when the twist runs back to the nip of
the said rollers.
In this manner and by these means I practically double the output of tho
machine because I am able to produce double" rove " from two slivers, pussed
separately through the roving frame, and then doubled together and wound on
a single bobbin 17 and having all the advantages of double " rove" produced
by doubling two separate ends of "rove" together on the spinning frame.
In those mills where already there is sufficient preparing machinery to supply
all the spinning frames with double rove this arrangement may be adopted and
by dividing the weight of the slivers at the back of the roving frame doubled
rove can be produced of the same weight as the present single rove and this may
be spun double thereby producing a quadruple rove yarn of improved quality.
In like manner if desired more than two slivers could be passed separately
through the roving frame and be wound upon a single bobbin as described.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
rove
"
1. Doubling the number of slivers, sliver cans, back and front conductors and
certain other parts and leading two slivers for each winding on bobbin separately
through the machine and the front drawing rollers and then twisting and wind-
ing each pair of slivers together as double
stantially as herein described with reference to the accompanying drawings.
upon a single bobbin sub-
2. The combination with each winding on bobbin 17, of the following doubled
parts the top pressing roller 14, the front conductors 11, the gills 10 and back
conductors 6, and preferably also the following additional parts the guide pins 15
and the slotted guide plate 9, whereby two slivers for each winding on bobbin
can be lead separately through the machine and beyond the front drawing rollers
und then be twisted and wound on together as double "rove" substantially as
herein set forth.
Dated this 1st day of Santamilan 1900
I. B. BARLOW & GILLETT,
Agents for Applicant,
17, St. Ann's Square, Manchester.