Improvements in or relating to Knitting Machines.
Year: 1896

page_text: Date of Application, 26th Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements in or relating to Knitting Machines.
We, GUSTAV FRIEDRICH GROSSER, of Markers:lorf, near Burgstält, in the
Kingdom of Saxony, and Empire of Germany, Manufacturer, and JAMES FOSTER,
of 41, Friargate, Preston, in the County of Lancaster, Knitting Machine Patentee,
do hereby declare the nature of this invention to be as follows:-
This invention relates to knitting machines of the Lamb or Foster type and has
for its object to produce in such machines a double knitted fabric having three or
more colours in the same row of loops with an approximately level surface on the
back of the fabric. In existing arrangements of knitting apparatus when two
colours are worked in the same row there are twice as many loops formed on
the back of the fabric as on the front and similarly when four colours are employed
there are under ordinary conditions four times as many loops on the back as on the
front the additional back loops forming themselves int raised ridges. To partially
overcome this defect we employ two lengths of needles and arrange them in the
needie bed alternately and so arrange the controlling cams that the one set of
needles will work when the carriage is moved in one direction and the other
set when it is moved in the opposite direction. By this arrangement the extra
loops on the back of the fabric are reduced in number by one half giving two loops
instend of four for each loop on the front of the fabric and thereby preventing or
materially reducing the thickness of the raised ridges:
Dated this 26th dus of Rabruary 1806
Improvements in or relating to Knitting Machines.
We, GUSTAV FRIEDRICH GROSSER, of Markersdorf, near Burgstädt in the
Kingdom of Saxony, and Empire of Germany, Manufacturer, SARAH ANN
FOSTER, of 11 Cliff Street, Preston, Widow of the late JAMES FOSTER, and
WILLIAM THOMPSON SOWERBUTTS, of Waterloo Road, Ashton-upon-Ribble,
Preston, Cashier, Executors of the late JAMES FOSTER, 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 :-
This invention relates to knitting machines of the Lamb or Foster type and has
for its object to produce in such machines a double knitted fabric having three or
more colours in the same row of loops with an approximately level surface on the
back of the fabric. In existing arrangements of knitting apparatus when two
colours are worked in the same row there are twice as inany loops formed on

page_text: the back of the fabric as on the front and similarly when four colours are
employed there are under ordinary conditions four times as many loops on the
hack as on the front the additional back loops forming themselves into raised
ridges. To partially overcome this defect we employ two lengths of needles and
arrange them in the needle bed alternately and so arrange the controlling cams
that the one set of needles will work when the carriage is moved in one direction
and the other set, when it is moved in the opposite direction. By this arrange-
ment the extra loops on the back of the fabric are reduced in number by one
half giving two loops instead of four for each loop on the front of the
fabric and thereby preventing or materially reducing the thickness of the raised
ridges.
The accompanying drawing represents an underneath view of the needle-beds of
a Lamb or Foster type of knitting machine having our invention applied thereto
the back needle-bed being shown at the upper part of the figure and the front
needle-bed at the lower part thereof.
The cum locks are shewn as we arrange them for a double Jacquard machine
the centre cam A working the pattern needles the centre cam 13-shewn in broken
lines not being used when doing pattern work but only for plain work. The
centre cams C and D of the front needle-bed each consist of three parts c'e
and and and d. The parts e and d-shewn in broken lines-are drawn
back in the cam plate so as to be out of action. The parts and are hinged or
swung on a pivot and cause the needles to be lifted when the carriage is moved
in one direction but allow the needles to pass through when the carriage is moved
in the other direction. The parts and are merely auxiliary or supporting cams
to and d. The drawing shows the cam-locks and needles when the carriage is
being moved from left to right in which case the longer needles 1, 3, 5, 7, etc. are
lifted by the centre cam D-rising along the sloping outer surface of the swinging
part whilst the shurt needles 2, 4, 6, etc., pass through the cam C and under-
neath the swinging part. c and are therefore inactive. When the carriage is moved
from right to left only the short needles are lifted-by meeting the sloping outer
surface of the swinging part e' of the centre cam C-whilst the long needles pass
through the cam Daud under the swinging part d' and are consequently inactive.
Thus the needles of the front needle bed with two traverses of the carriage only
produce one row of loops. We have described and shewn the application of our
invention in what appears to us its simplest form but there may obviously be other
methods for dividing or alternating the needles in the front needle bed.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
In a kuitting machine of the Lamb or
of different lengths in conjunction with
stantially as hereinabove described and
εμονίδου,
Foster type the employment of needles
suitably arranged cams in manner sub-
shewn in the drawings for the purpose
Dated this 20th day of November 1890.
For the Applicunts,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.

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