IMPROVE- MENTS IN MACHINERY AND APPARATUS APPLICABLE TO TWIST LACE MACHINES, AND IN THE FABRICS PRODUCED THEREON
Year: 1877

page_text: LETTERS PATENT to William Tilson, of the Firm of Sharman and Tilson, of the
Town and County of the Town of Nottingham, for the Invention of " IMPROVE-
MENTS IN MACHINERY AND APPARATUS APPLICABLE TO TWIST LACE MACHINES,
AND IN THE FABRICS PRODUCED THEREON."
Sealed the 4th January 1878, and dated the 9th November 1877.
PROVISIONAL SPECIFICATION left by the said William Tilson at the Office
of the Commissioners of Patents on the 9th November 1877.
WILLIAM TILSON, of the Firm of Sharman and Tilson, of the Town and County
of the Town of Nottingham.
"IMPROVEMENTS IN MACHINERY AND APPARATUS
APPLICABLE TO TWIST LACE MACHINES, AND IN THE FABRICS PRODUCED
THEREON."
My improved machinery and apparatus applicable to the improvements described
in the Specification of a Patent granted to me for improvements in twist lace
machines and in the manufacture of lace made on twist lace machines, dated
September 13th, 1870, Numbered 2467, and Sealed 1st November 1870, consists of a
tier of jacks lying in sleys, each jack being operated by a jacquard, the cylinder of
which is operated by an excentric in the usual way, but the lift of the jacquard
needles is effected by a peculiar shaped cam or cams, which cause the needles to be
lifted at varying periods, with a pause or rest to allow a selection of the needles to
be made. The jack locker cams are of such a shape that they will operate in con-
junction with the jack lifting cams; the rest of the machinery is of the usual
construction.
My improved fabrics are made with a double tie cross net; the same threads which
I employ to make the double tie cross net I also employ to make embossed patterns
upon the said net.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Willian Tilson in the Great Seal Patent Office on the 30th April
.1878.
WILLIAM TILSON, of the Firm of Sharman and Tilson, of the Town and County of
the Town of Nottingham. "IMPROVEMENTS IN MACHINERY AND APPARATUS
APPLICABLE TO TWIST LACE MACHINES, AND IN THE FABRICS PRODUCED
THEREON."
My improved machinery and apparatus applicable to the improvements described
in the Specification of a Patent granted to me for improvements in twist lace
machines and in the manufacture of lace made on twist lace machines, dated
September 13th, 1870, Numbered 2467, and Sealed 1st November 1870, consists of
a tier of jacks lying in sleys, each jack being operated by a jacquard, the cylinder
of which is operated by an excentric in the usual way, but the lift of the jacquard
needles is effected by a peculiar shaped cam or cams, which cause the needles to be
lifted at varying periods with a pause or rest to allow a selection of the needles to
be made. The jack locker cams are of such a shape that they will operate in con-
junction with the jack lifting cams; the rest of the machinery is of the usual
construction.
My improved fabrics are made with a double tie cross net; the same threads which
I employ to make the double tie cross net I also employ to make embossed patterns
unon the said net.
Figures 1 and 2 are side views of two cams; and Figures 3 and 4 represent two
separate arrangements of threads I employ.
The corresponding parts in each Figure are indicated by the same letters where
necessary.
The cylinder of the jacquard is operated by an excentric in the usual way, but
the lift of the jacquard needles is effected by a peculiar shaped cam shewn in side
view at Figure 1, which causes the needles to be lifted at varying periods, with a
pause or rest at D, which allows a selection of the jacquard needles to be made, the
first selection being made when the truck A', carried by the lifting lever, is at the
point marked A on the cam, the second selection being made when the part of the
cam marked B operates the truck, the rise of the cam at C ensuring the lifting of
these needles not selected by the pattern card previous to reaching the pause or rest
D, the lifting cam again lifting previous to another selection being made at A. The
pause on the cam, Figure 1, may be made shorter or longer than shewn, the space
between the points E and E' on the jack locker cam, Figure 2, being made shorter
or longer in proportion.
The two cams are shewn in the Drawings in their respective relative position to
the cam shaft, there being one cam like Figure 1 to each jacquard employed, and one
jack locker cam like Figure 2 near each end of the machine, the rest of the machine
is of the usual construction.
One modification of an improved fabric, shewn at Figure 3, has a double tie cross
net constructed as follows:-The four vertical lines F representbobbin threads, and the
two lines G and G' represent warp or spool threads, all the threads G being supplied
to one guide bar or its equivalent, and all the threads G2 being supplied to another
guide bar or its equivalent. The warp or spool threads are shewn in Figure 3
working round one more carriage thread to the right and left than is necessary to
make net, but I do not confine myself to two carriage threads right and left, but
work the warper spool threads round as many carriage threads right and left as may
be necessary to give effect to the pattern required, by such means I am enabled to
produce an embossed pattern upon a double tie cross net.

page_text: Figure 4 shews the arrangement of carriage and warp or spool threads to produce
single tie cross net.
Having thus described the nature of my said Invention, and the manner of per-
forming the same, I would have it understood that I do not claim for a cam having
a rise, pause, and single lift to operate the jacquard needles, but what I do claim
is,-
First. For a cam having a rise, pause, and two lifts at irregular distances to
operate the jacquard needles.
Secondly. For the improved double and single tie meshes, consisting of warp or
spool threads working round two or more carriage threads, right and left, froin a
twisted pillar, as herein-before described, and illustrated in the Drawings
annexed.
In witness whereof, I, the said William Tilson, have hereunto set my hand
and seal, this Twenty-seventh day of April, in the year of our Lord One
thousand eight hundred and seventy-eight.
Witness,
H. W. GOUGH, C.E.,
Nottingham.
WILLIAM TILSON. (L.S.)