IMPROVE- MENTS IN THE METHOD OF WORKING LACE MACHINERY WHEREBY NEW AND IMPROVED EFFECTS ARE OBTAINED
Year: 1876

page_text: LETTERS PATENT to George Pigott, of Dane Street, Great Alfred Street, in the
Town and County of the Town of Nottingham, for the Invention of "IMPROVE-
MENTS IN THE METHOD OF WORKING LACE MACHINERY WHEREBY NEW AND
IMPROVED EFFECTS ARE OBTAINED."
Sealed the 19th April 1876, and dated the 18th February 1876.
PROVISIONAL SPECIFICATION left by the said George Pigott at the Office of
the Commissioners of Patents on the 18th February 1876.
GEORGE PIGOTT, of Dane Street, Great Alfred Street, in the Town and County of
the Town of Nottingham. "IMPROVEMENTS IN THE METHOD OF WORKING LACE
MACHINERY WHEREBY NEW AND IMPROVED EFFECTS ARE OBTAINED."
The Invention has for its object improvements in the method of working lace
machinery whereby new and improved effects are obtained, and relates to a novel
method of weaving, whereby tubes and tapes can be made as separate articles_of
manufacture or may be woven at intervals, and form portions of lace fabric. For
this purpose I arrange the warp threads in guide bars and the weft threads in
bobbins, as heretofore, but according to my Invention I by preference place the
guide bars for producing the net all on one side of the machine, and those for pro-
ducing the tapes or tubes all on the other side; and in making tapes or tubes I
employ a double set of warp threads, arranged in and operated by, say, the front
guide bars.
By shogging the guide bars as required I form a shed in each set of warp threads
to permit of the passage of one or more bobbins between them, but instead of
causing the bobbin or bobbins to pass backwards and forwards between sheds
formed in the same set of warps, I so shog the guide bars as to cause the bobbin or
bobbins to pass alternately through a shed formed in one set of warps, and then
through a shed formed in another set of warps. By causing a bobbin or bobbins to
pass continuously first through one set of warps and then through a second set
without returning through a shed formed in the first set of warps before it passes
through a shed formed in the second set of warps, that is to say, by causing a
bobbin or bobbins to make only a single traverse through each set of warps before
making a traverse through the other set, I produce tubes; but by causing the
bobbin or bobbins to pass twice through sheds formed in one set of warps, and then
Price 1

page_text: twice through sheds formed in the other set of warps, I produce tapes, which
are woven in the machine in U form, but when removed from the machine will
open out flat.
By combining the working of the net or lace guide bars with the tape or tube
guide bars, the tapes or tubes will be formed in stripes on the net or lace, and will
be attached thereto.
I generally cause only a single bobbin to act in combination with the warps for
the production of a single tape or tube, but if desired the guide bars may be shogged
to such distances in either direction as to open a shed wide enough for the passage
of two or more bobbins therethrough, as may be desired.
0
The Invention may also be applied to machines in which the bobbins and
carriages are traversed from end to end of the machine, in which case the bobbins
in succession pass through the warps arranged as previously described.
By the mode of arranging the guide bars herein described, the net bars are placed
by themselves, and the tape or tube bars by themselves, by which arrangement
greater facility of access is obtained to such guide bars than when working according
to the arrangements heretofore adopted.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Pigott in the Great Seal Patent Office on the 17th August
1876.
GEORGE PIGOTT, of Dane Street, Great Alfred Street, in the Town and County of
the Town of Nottingham. "IMPROVEMENTS IN THE METHOD OF WORKING LACE
MACHINERY WHEREBY NEW AND IMPROVED EFFECTS ARE OBTAINED."
The Invention has for its object improvements in the method of working lace
machinery whereby new and improved effects are obtained, and relates to a novel
method of weaving, whereby tubes and tapes can be made as separate articles of
manufacture or may be woven at intervals, and form portions of lace fabric. For
this purpose I arrange the warp threads in guide bars and the weft threads in
bobbins, as heretofore, but I by preference place the guide bars for producing the
net all on one side of the machine, and those for producing the tapes or tubes all on
the other side; and in making tapes or tubes I employ a double set of warp threads,
arranged in and operated by, say, the front guide bars.
By shogging the guide bars as required I form a shed in each set of warp threads
to permit of the passage of one or more bobbins between them, but instead of
causing the bobbin or bobbins to pass backwards and forwards between sheds
formed in the same set of warps, I so shog the guide bars as to cause the bobbin or
bobbins to pass alternately through a shed formed in one set of warps, and then
through a shed formed in another set of warps. By causing a bobbin or bobbins to
pass continuously first through one set of warps and then through a second set
without returning through a shed formed in the first set of warps before it passes
through a shed formed in the second set of warps, that is to say, by causing a
bobbin or bobbins to make only a single traverse through each set of warps before
making a traverse through the other set, I produce tubes.
This mode of working
will be clearly understood on referring to diagram 1, in which one set of warps is
represented at a, and a second set at b.
To form a tube the bobbin and carriage are caused to make a continuous traverse
through each set of warps in the directions indicated by the arrows c to leave a weft
thread d therein. The bobbin and carriage first pass through a shed formed in the
set of warps a, and then at the next motion through a shed formed in the other set
of warps b, and at the third motion pass through another shed formed in the set of
warps a, and so on, passing continuously through fresh sheds formed in the two sets
of warps a and b. These sheds are formed by means of the guide bars operating

page_text: each set of warp threads to cause them to cross and form a new shed before each
traverse of the bobbin therethrough.
By causing the bobbin or bobbins to pass twice through sheds formed in one set
of warps, and then twice through sheds formed in the other set of warps, I produce
tapes, which are woven in the machine in U form, but when removed from the
machine will open out flat. This mode of working will be clearly understood on
reference to diagram 2. The bobbin and carriage first pass in the direction of the
arrow e through a shed formed in the set of warps a, and then at the second motion
in the direction of the arrow f through a shed formed in the set of warps b; they
then return at the third motion in the direction of the arrow g through a new shed
formed in the warps b, and then at the fourth motion in the direction of the arrow h
through a new shed formed in the warps a, after which the motions are repeated as
before described.
By combining the working of the net or lace guide bars with the tape or tube
guide bars, the tapes or tubes will be formed in stripes on the net or lace, and will
be attached thereto, as indicated by diagrams 3 and 4.
I generally cause only a single bobbin to act in combination with the warps for
the production of a single tape or tube, but if desired the guide bars may be shogged
to such distances in either direction as to open a shed wide enough for the passage
of two or more bobbins therethrough, as may be desired.
The Invention may also be applied to machines in which the bobbins- and
carriages are traversed from end to end of the machine, in which case the bobbins
in succession would pass through the warps, which would be arranged as previously
described.
By the mode of arranging the guide bars herein described, the net bars are placed
by themselves, and the tape or tube bars by themselves, by which arrangement
greater facility of access is obtained to such guide bars than when working according
to the arrangements heretofore adopted.
I would here remark that I do not claim the manufacture of tapes in lace
machines by the combined action of bobbin and warp threads generally considered, as
such has before been done, but in such cases only one set of warp threads has been
employed to produce a single tape, by which means only comparatively narrow
tapes can be produced, whereas by the employment of two sets of warp threads
to produce a single tape in the manner herein described, broader tapes can be
produced.
Having thus described the nature of my said Invention and the mode in which
I carry the same into effect, I would have it understood that what I claim is, the
modes of arranging and working the warp and the bobbin threads in lace machines
so as to produce tapes and tubes which may be made either as separate articles of
manufacture or woven at intervals and form portions of lace fabric, substantially as
herein described.
In witness whereof, I, the said George Pigott, have hereunto set my hand and
seal, this Tenth day of August, in the year of our Lord One thousand eight
GEORGE PIGOTT. (L.S.)