and other Fibres!
Year: 1886

page_text: and other Fibres!
We GEORGE WILLIAM DOUGLAS, of Manningham, in the County of York,
Gentleman, and JAMES SHAW of 50 Lyndhurst Street, Bradford, in the aforesaid
County, Engineer, do hereby declare the nature of our invention for IMPROVE-
MENTS IN SCREW GILL BOXES FOR PREPARING WOOL, SILK AND OTHER FIBRES, to
be as follows :-
This invention relates to that class' of screw gill boxes for preparing wool, silk
and other fibres, in which the gills or fallers are traversed by screws having an
increasing pitch. And the object of the invention is to prevent the fibres being
broken as they are fed upon and taken from the gilla.
Our improvements consist in feeding the fibres on to and removing them from
the gills without them being firmly gripped, so that any portion of the fibres are
free to be drawn in quicker, or to be delivered more slowly than the bulk is
travelling without being broken.
For this purpose we preferably employ light plain feed, and delivery rollers
without nip, or with only a slight nip or pressure between them, for feeding the
fibres on to and removing them from the gills, in lieu of the heavy fluted rollers
with tight nip commonly used. Hitherto such feed and delivery rollers have been
fluted and pressed tightly together so as to firmly grip the fibres, thus many of such
fibres were broken if from any reason' they were too quickly drawn in or slightly
retained by the gills. Whereas by the use of light plain feed, and delivery rollérs
without nip or with only a'slight nip, the fibres are with equal facility fed upon
and removed from the gills without danger of breaking them. Also as the rollers
have a plain smooth surface, and the pressure on the endless aprona passing
between them is comparatively slight the wear and tear of such aprons' is greatly.
reduced!

page_text: Improvements in Screw Gill Boxes for Preparing Wool, Silk,
and other Fibres.
We GEORGE WILLIAM DOUGLAS, of Manningham, in the County of York,
Gentleman, and JAMES SHAW of 50 Lyndhurst Street, Leeds Road, Bradford, in
the aforesaid County, Engineer, do hereby declare the nature of our invention for
IMPROVEMENTS IN SCREW GILL BOXES FOR PREPARING WOOL, SILK AND OTHER
FIBRES and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to that class of screw gill boxes for preparing wool, silk,
and other fibres in which the gills or fallers are traversed by screws having an
increasing pitch. And the object of the said invention is to prevent the fibres
being broken as they are fed upon, and taken from the gills.
Our improvements consist in feeding the fibres on to, and removing them from
the gills, without them being firmly gripped, so that any portion of the fibres is
free to be drawn in quicker by the gills, or to be delivered more slowly therefrom,
than the feed and delivery mechanism is travelling without being broken.
For this purpose we preferably employ plain feed and delivery rollers without
nip or with only a slight nip or pressure between them, for feeding the fibres on
to, and removing them from the gills, in lieu of the heavy fluted rollers with tight
nip commonly used. Hitherto such feed and delivery rollers have been fluted and
pressed tightly together so as to firmly grip the fibres, therefore many of such
fibres were broken if from any reason they were too quickly drawn in or slightly
retained by the gills. Whereas by the use of plain feed and delivery rollers
without nip or with only a slight nip, the fibres are with equal facility fed upon,
and removed from the gills without danger of breaking them. Also as the rollers
have a plain smooth surface and the pressure on the endless aprons passing between
them is only slight the wear and tear on such aprons is greatly reduced.
Reference is to be had to the accompanying drawings forming part of this
specification in which similar letters of reference indicate corresponding parts in
both the figures.
Figure 1 represents a plan of such parts of a single gill box, fitted with feed and
delivery rollers made and arranged in accordance with our invention, as are
necessary to illustrate our improvements. Figure 2 is a longitudinal section of
the same.
.
The feed rollers A and the delivery rollers B have a plain surface, and the nip
or pressure between them is only sufficiently tight to carry the fibres to and
remove them from the gills C. Portions of the endless aprons D and D' are
respectively shown on the bottom feed and delivery rollers, but similar aprons
which usually pass round the top rollers are omitted for greater perspicuity.
The feed rollers A are geared together by the wheels F at one end, and a wheel G
on the other end of the arbor of the bottom roller engages with the wheel H
secured on the shaft of the worm wheel J which shaft is mounted in a bracket
fixed to the frame of the machine. The worm wheel J is actuated by the worm K

page_text: on the longitudinal shaft L and such shaft is driven by the bevel wheels M con-
necting it to the main shaft N. The delivery rollers B are also geared together
and driven in a similar manner.
The relative speed of the feed and delivery rollers together with the speed of
the gills C traversed by the screws of increasing pitch O is preferably arranged in
the manner described in the specification of Letters Patent granted to us on the
6th day of November 1885 No. 13,434.
It is obvious that our improvements are applicable to the intermediate rollers
employed in gill boxes having more than one set of gills, in which case we use
intermediate rollers made and arranged similar to the feed and delivery rollers
herein described.
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:
1. In a screw gill box, the combination with gills traversed by screws of
increasing pitch of feed mechanism which feeds the fibres in such a manner that
any portion of the said fibres is free to be drawn in by the gills more quickly
than such feed mechanism is travelling, substantially as herein shown and
described.
2. In a screw gill box, the combination with gills traversed by screws of
increasing pitch, of delivery mechanism which draws off the fibres in such a
manner that any portion of the fibres is free to be drawn off the gills more slowly
than such delivery mechanism is travelling substantially as herein shown and
described.
3. In a screw gill box, the combination with gills traversed by screws of
increasing pitch, of plain feed, intermediate or delivery rollers, substantially as
herein shown and described.
Dated thin onth Jantahan 1000
DRACUP & NOWELL,
Bradford, Agents.