IMPROVEMENTS IN THE MANUFACTURE OF LACE IN TWIST LACE MACHINES
Year: 1877

page_text: LETTERS PATENT to William Booth, of Forest Side, Nottingham, for the
Invention of "IMPROVEMENTS IN THE MANUFACTURE OF LACE IN TWIST LACE
MACHINES."
Sealed the 7th May 1878, and dated the 5th December 1877.
PROVISIONAL SPECIFICATION left by the said William Booth at the Office
of the Commissioners of Patents on the 5th December 1877.
WILLIAM BOOTH, of Forest Sido, Nottingham. "IMPROVEMENTS IN THE Manu-
FACTURE OF LACE IN TWIST LACE MACHINES."
The object of this Invention is to produce a "spot" with "one" bobbin thread and
"two" warp threads, instead of using two bobbin threads as heretofore. I proceed
as follows:-One warp thread moves to the " right" of bobbin thread on the front
motion, and to the left of bobbin thread on the back motion; the other warp thread
moves to the left of the bobbin thread on the front motion, and to the right on the
back motion. When they have worked thus for a given number of motions, one
warp thread is carried to a bobbin on the right-hand side of the one on which it
has been working. The other warp thread is carried to the left-hand side of the
one on which it has been working.
The spring of the bobbin on which the two warp threads have been working is
slackened, so as to allow the bobbin to run easy; thus, when the two warp threads
which have worked on said bobbin are carried in opposite directions, a spot is
produced from the said bobbin.
A "double" spot or star-like spot can be produced with "two" bobbin threads,
whilst on the old method it would require "four" bobbin threads to produce the
same effect.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Booth in the Great Seal Patent Office on the 5th June
1878.
WILLIAM BOOTH, of Forest Side, Nottingham. "IMPROVEMENTS IN THE MANU-
FACTURE OF LACE IN TWIST LACE MACHINES."
The object of this Invention is to produce a "spot" with one bobbin thread and
two warp threads, and the method of producing it is as follows:-One warp thread
moves to the right of the bobbin on the first or front motion, and to the left of the
bobbin on the second or back motion; the other warp thread moves to the left of
the bobbin on the first or front motion and to the right on the second or back
motion, and so on, thus producing a plaited pillar. The two warp threads are then
carried in opposite directions, one to the right the other to the left. By this means,
the warp threads being suitably weighted and the bobbin lightly sprung, a portion
of the material is drawn from the bobbin each way, forming a "spot."
In like manner, by employing two bobbin threads and four warp threads a double
"spot" can be produced.
A diagram of the single "spot," drawn to an enlarged scale is shewn in the
Drawings annexed at Figure 1. This "spot" can be produced with a single thread
in a bobbin, but I prefer to make it with two threads in a bobbin; 1 and 3 repre-
sent the warp threads; 2 represents the bobbin threads.
The double "spot" formed in connection with a muslin edging is shewn at
Figure 2.
What I claim is the production of the "spot" in fabrics of this class by means
of thread or threads drawn from a single bobbin, the material so drawn from the
bobbin being distended between two warp threads, substantially as described.
In witness whereof, I, the said William Booth, have hereunto set my hand
and seal, this Third day of June, in the year of our Lord One thousand
eight hundred and seventy-eight.
177 DOOMI