and other Fibres.
Year: 1886

page_text: and other Fibres.
We GEORGE WILLIAM DOUGLAS of Manninghau, 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 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 :-
Our invention relates to novel and useful improvements.in screw gill boxes, and
its object is to provide a screw gill box which will efficiently straighten, separate
and prepare for combing wool, silk or other fibres; and at the same time greatly
reduce the percentage of fibres hitherto broken during the operation.
:
To carry out our invention we employ screws having an increasing pitch to
traverse the gills or fallers along the box the said screws being made considerably
longer than the screws hitherto used, that is to say at least fifteen inches long;
therefore, more gills or fallers are in operation together, and such gills or fallers aro
gradually separated and their speed is accelerated as they traverse the box. Wo
also arrange the feed mechanism so that the fibres are supplied to the gills or fallers
at a speed equal to, or approximately equal to, the speed at which the said gills or
fallers commence to traverse the box, and the delivery mechanism is arranged to
draw the fibres off such gills or fallers at a speed equal to, or approximately equal
to, the speed at which the gills terminate their traverse of the box, thus; the
straightening and opening out action on the fibres is performed entirely by the
separation of the gills; and on account of the extra length of the screws more gills
are in operation together therefore their action is more thorough and gradual.
In order that persons skilled in the art to which our invention appertains may
fully understand our improvements we will describe the same in detail referring by
letter to the accompanying drawing forming part of this specification in which
Figure 1 is a plan of such portions of a screw gill box as are necessary to illustrate
our invention. Figure 2 is a longitudinal sectional elevation of the same.
The screws of increasing pitch A of the length of at least fifteen inches are
fitted one on each side of the gill box, and they impart a gradually increasing
motion to the gills or fallers B from the commencement to the termination of the
forward traverse of such gills. The gills B are then passed down, by means of

page_text: the usual cams or tappets on the ends of the screws A, to the bottom screws C
which are of uniform pitch, and are thereby conveyed back and up into position
in the ordinary manner, to be again traversed forward by the screws A. The usual
guides or saddles are provided on which the gills slide and such gills are guided
from the top screws to the bottom ones and vica versa in the ordinary manner.
The screws A and C are geared together by the wheels D and F and revolve at
the same speed. The bottom screws C are connected by bevel wheels G to the
cross shaft H and such shaft is connected by gearing to the main shaft J.
As described in our Provisional Specification number 982 dated the 22nd January
1886 the feed rollers K are not fluted, and are 'driven at a surface speed approxi-
mately equal to the speed at which the gills commence their forward traverse, thus;
the fibres are not broken by the gills drawing them away from the feed rollers at
a greater speed than they are fed by such rollers. The rollers K are geared together
at one end and a wheel I on the other end of the arbor of the bottom roller is
driven by the wheel L, secured on the shaft of the worm wheel M which shaft
works in a bearing formed in a bracket fixed to the frame of the machine. The
worm wheel M is actuated by the worm N on the longitudinal shaft ☐ and such
shaft is driven by the bevel wheels P connecting it to the main shaft J.
The delivery rollers R are also not fluted and are driven at a surface speed equal
to or approximately equal to the speed at which the gills terminate their traverse.
The rollers Rare geared together in a similar manner to the feed rollers and the
wheel on the arbor of the bottom roller gears with the wheel L' secured on the
shaft of the worm wheel M¹, and such worm wheel is actuated by the worm N¹
on the longitudinal shaft O.
A dabbing brush S, placed in front of the feed rollers K and arranged to make
a stroke or dab each time a gill B is raised from the screws C to A, is employed to
dab the fibres into the gills. The brush S is secured on a cross bar T provided at
each end with a guide or sleeve V sliding on vertical rods U fixed to the frame of
the machine the said sleeves are attached by the rods W to the arm X and lever Y
fixed on opposite ends of the rocking shaft A' and a cam B¹ on the shaft Himparts
an up and down motion to the lever Y which is communicated to the dabbing
brush S. A spring C¹ is provided to raise the brush S and keep the anti-friction
roller D', on the end of the lever Y, in contact with the cam B¹.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare what
we claim is:
(1.) In a screw gill box, the application of screws having an increasing pitch
and of extra length for traversing the gills or fallers, substantially as herein shewn
and described and for the purpose specified.
(2.) In a screw gill box, the combination of the said screws of increasing pitch
with feed and delivery mechanism respectively driven at a surface speed approxi-
nately equal to the speed at which the gills start and finish their traverse,
substantially as herein shewn and described and for the purpose specified.