Year: 1887

page_text: Date of Application, 29th Oct., 1887
Complete Specification Left, 30th July, 1888
Complete Specification Accepted, 31st Aug., 1888
GEORGE WILLIAM DOUGLAS and JAMES SHAW both of Berksland Street, Leeds
Road, Bradford, Machine Makers do hereby declare the nature of this invention 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.
Our Improvement consists in the use of one or more sets of inverted intersecting
fallers traversed by screws of increasing pitch, in combination with one or more sets
of fallers, traversed in like manner by screws of increasing pitch and with the pins
0 upward in the usual manner.
GEORGE WILLIAM DOUGLAS.
JAMES SHAW.

page_text: тот
Preparing ..W001, Silk, and
other Fibres....
We, GEORGE WILLIAM DOUGLAS, of Blenheim Mount, Manningham, in the County
of York, Gentleman, and JAMES SHAW, of Lyndhurst Street, Bradford, in the said
County, 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 :-
Our invention relates to improvements in that class of screw gill boxes for preparing
wool, silk and other fibres in which the gills or fallers are traversed by screws of
increasing pitch, and particularly to the gill boxes for which we have obtained Letters
Patents No. 13,434 dated 6th November A.D. 1885, and No. 3169, 6th March
A.D. 1886.
The said improvements consist in the use of one or more sets of inverted intersecting
gills or fallers traversed by screws of increasing pitch in combination with one or
more sets of gills or fallers driven in like manner by screws of increasing pitch which
have the pins upwards in the usual manner.
; In order to fully describe our invention reference is to be had to the accompanying
drawing forming a part of this specification, in which similar letters of reference
indicate corresponding parts in both the figures.
Figure 1, represents a longitudinal section of such parts of a gill box as are
necessary to illustrate our invention, the gills or fallers being omitted. Figure 2, is
a transverse section of the same on the line a, b of the former figure.
A set of gills C arranged in the ordinary manner is employed driven by top
screws A of increasing pitch and bottom or returning screws B of ordinary pitch, so
that as they are traversed forwards in contact with the fibres such gills gradually
separate and their speed is accelerated. The said screws are connected to the driving
shaft of the machine and operated in a similar manner to that set forth in the
specifications of the above cited Letters Patents.
A set of inverted intersecting gills C is arranged above the first set of gills C.
Such gills are operated by similar screws to those operating the bottom set of gills,
but in this case the lower screws A¹ are of increasing pitch and the upper ones B¹ are
of regular pitch.
The two pairs of screws A and A¹ are duplicate and are geared together by the
wheels F so as to operate the gills C and C at the same speed.
By this arrangement each set of gills presses the fibres into the pins of the other as
they are fed between them by the feed rollers E, thus the strain of opening out the
fibres is divided between the two sets and shorter and finer pins may be used which
are better adapted to separate and straighten out the fibres without breaking them.
In the drawing the gill box represented is shown with a second set of screws A²
and B² arranged to operate a second set of upright gills adapted to receive the fibres

page_text: passing from the double set, but it is obvious that a second or third set of inverted
intersecting gills may be employed, or that the fibres may be directly drawn off the
first set by delivery rollers.
The feed rollers E and delivery rollers H are preferably mounted in standards G
placed nearer the centre of the machine than the screws to obviate the necessity of
passing their arbors between the screw shanks I. Such feed and delivery rollers are
driven by toothed wheels J, J mounted upon the arbors K, K of the bottom rollers
and engaging the toothed wheels L, L secured on the inner ends of the short
shafts N, N upon the outer ends of which the wheels O, O connected by gearing to
the longitudinal shafts P are mounted.
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. The combination with one or more sets of ordinary upright gills operated by
screws of increasing pitch, of one or more sets of inverted intersecting gills operated
by screws of increasing pitch substantially as herein shown and described and
illustrated in the accompanying drawing.