IMPROVEMENTS, IN LOOMS FOR WEAVING
Year: 1868

page_text: PROVISIONAL SPECIFICATION left by John Goulding at the Offico
of the Commissioners of Patents, with his Petition, on the 23rd
January 1868.
I, JOHN GOULDING, of Tong Street, Dudley Hill, Bradford, in the
County of York, do hereby declare the nature of the said Invention
for "IMPROVEMENTS, IN LOOMS FOR WEAVING," to be as follows:-
My Invention refers especially to looms used for the weaving of
figured fabrics upon either plain or figured ground, and usually termed
"swivel" looms.
My object is to simplify the construction and arrangement of the
swivels or shuttles as well as by so doing to enable me to use a greater
number and therefore variety of colours or shades than is possible in
existing systems. For this purpose I use a double or single series of
parallel vertical concentric plates, that is to say, having a hole in the
centre concentric with the periphery, and having a slit cut in the bottom
of each from the outside to the centre, say, one-eighth of the circum-
ference in breadth for the purpose of lifting the warp threads when
required. Each of these plates is furnished with a projection which
passes through and has its fulcrum in a bar running the width of

page_text: the warp, the projecting portion having teeth and forming a segmental
pinion which is rotated by a horizontal rack actuated by a cord. The
usual jacquard apparatus is employed to actuate the racks, and a lever
operated upon by a tappet on the crank shaft and connected by the
cord named to the racks aids in such operation. Each series of plates
may consist of seven in number, more or less, dependent upon the
colours or shades required, and by the arrangement of a double series,
or one placed above the other, I am enabled (say, where seven in each
are used) to obtain fourteen shades and colours, as well as by placing
the upper series at intermediate spaces relatively to the lower series to
weave patterns intermediate upon the piece without traversing the bars
carrying the swivels or shuttles laterally as would be otherwise necessary.
A bobbin of weft is placed in position at the top of each plate, and the
bars carrying the plates are bolted together at convenient distances
apart, ferrules intervening. A number of the series of plates referred
to dependent upon the pattern to be woven are placed across the loom,
and in proximity to the going part, and they may either be attached to
the cross rail or connected together by means of a small shaft, the ends
of which swing in levers having their fulcra in the end frames of the
loom, but connected by an intermediate lever with the "swords" which
carry the going part. By means of this lever arrangement reciprocatory
horizontal motion is given to the plates, and by means of the rack
motion before referred to rotatory motion is imparted to them, thereby
leaving the required weft in the warp, each in their respective turns,
dependent upon the pattern, during which latter motion the swivel or
shuttle passes and the pattern is woven. To give a uniform tension any
"slack" is taken up by lifting the shuttle carriers up and drawing them
back by the afore-named levers, having their fulcra on the ends of the
frame, and I also cause a spring to press upon the weft of each bobbin
to act as a drag, such bobbin rotating upon a plain spindle.
A great advantage by my arrangement consists in the weaver being
able easily to see all the bobbins under his charge.