Year: 1885

page_text: We, ALBERT SMITH, of the firm of John Smith and Sons Field Head Mills,
Bradford, in the County of York, Worsted Spinners, and HENRY WALTON
WHITEHEAD, of the firm of Taylor Wordsworth and Company, of Leeds, in the
said County, Machinists, 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:-
The object of this invention is to more clearly draw and straighten the sliver
and lay the fibres parallel with each other, preparatory to combing, drawing, roving,
or spinning; and consists in arranging the driving screws with different pitches for
traversing the fallers; one portion of the screws being cut with single .and the
remainder with double or more threads, so that the fallers travel quicker through
the fibre when traversed by the 'multiple threads, and thereby straighten it more
thoroughly than when operated upon by machines of the ordinary construction.
In the accompanying drawings Fig. 1, represents the sectional elevation of such
portions of a gill or preparing box as are required to make clear our invention.
Fig. 2 is a sectional plan of the same. Fig. 3, a view of the screws drawn to an
enlarged scale, and Figs. 4, 5 and 6, end views of the screws shewing the cams for
the raising and lowering of the fallers.
:
The gill or preparing box is of the ordinary construction and actuated in the
usual manner but instead of having the screws the same pitch throughout for
traversing the fallers; or having four separate screws driven from each end by
gearing, we make each of the top screws A, and A¹ in one length, and each of the
bottom screws B and B¹, for returning the fallers in one length also, and drive the
same by the bevel and spur wheels C and C₁, in the same manner as when
the machine is fitted with screws of the same pitch throughout.
One portion of the top and bottom screws next to the feed rollers D, are cut
with single threads for travelling the fallers, but the remainder of the screws are
cut with double or more pitched threads, which cause the fallers to travel quicker
through the fibre, and thereby straighten the same more thoroughly.
The fibre is fed by the feed rollers D, to the first set of fallers F, which passes
through the fibre in the ordinary manner so far as the ordinary stops S; but on
the fibre coming to the second set of fallers F1, traversed by the double pitched
screws A¹; they pass through the fibre at double the speed of the fallers F;

page_text: thereby obtaining double the amount of "draft," which more thoroughly straightens
the fibre, and enables us to manipulate the same with fewer machines, than when
operated upon in the ordinary manner.
The single pitched screws A and B, are provided with single cams G and G³, the
cams G being at the termination of the single threads or screws A, for the purpose
of lowering the fallers F, and cams G³ for raising them from the bottom to the top
screw A, as in ordinary machines.
The double pitched screws are provided with double cams H and H', the cams H
lowering the fallers F¹, to the bottom screws, and H raising them from the bottom
to the top; the ends of the threads for receiving them being prepared in the same
manner as in single threaded screws.
In case treble threaded screws are used, each screw or thread is provided with a
cam for operating the fallers, thus insuring them keeping in their respective
threads.
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 operating of two sets of fallers by screws cut with single and multiple
threads, the screws being driven from one end, substantially in the manner and for
the purpose as hereinbefore described.