We have already seen that a technical peculiarity in making needlepoint lace is
that a single thread and needle are alone used to form the pattern, and
that the buttonhole stitch and other loopings which can be worked by
means of a needle and thread mark, a distinction between lace made in
this manner and lace made on the pillow. For the process of pillow lace
making a series of threa
ds are in constant employment, plaited and
twisted the one with another. A buttonhole stitch is not producible
by it. The Leavers lace machine does not make either a buttonhole
stitch or a plait. An essential principle of
this machine made work is that the threads are
twisted together as in stocking net.
The number of threads brought into operation in a Leavers
machine is regulated by the pattern to be produced, the threads being of
two sorts, beam or warp threads and bobbin or weft threads. Sometimes
sixty
pieces of lace are used being made simultaneously, each piece requiring 148
threads 100 beam threads and 48 bobbin threads. The ends of both sets of
threads are fixed to a cylinder upon which as the manufacture proceeds
the lace becomes wound.
The supply of the beam or warp threads is held upon reels, and that
of the bobbins or weft threads is held in bobbins. The beam or warp
thread reels are arranged in frames or trays beneath the stage, above
which and between it and the cylinder the twisting of the bobbin or weft
with beam or warp threads containing the bobbin or weft threads are flattened in shape so as
to pass conveniently between the stretched beam or warp threads. The bobbins
can be imparted to warp and weft threads as required. As the bobbins or weft threads pass
like pendulums between the warp threads the latter are made to oscillate, thus causing them
to become twisted with the bobbin threads. As the twistings take place, combs passing through
both warp and weft threads compress the twistings. Thus the texture of the clothing or
in machine made lace may generally be detected by its ribbed
appearance, due to the compressed twisted threads.
At the same time the twisting in both these cases arises from the conjunction of
movements given. to the two sets of threads, namely, an oscillation or
movement from side to side of the beam or warp threads, and the swinging
or pendulum-like movement of the bobbin or weft threads between the warp threads.
Pillow Guipure Lace open and clear réseau or net, such as would be made on a
coarse machine, and at the same time to keep the pattern fine and
solid and standing out well from the net, as is the case with the real
lace, which cannot be done by using a coarse gauge machine.
Lace made in the Auvergue
is similar "Maltese lace." Close to it are specimens of lace
made by the circular lace machine of Messrs Birkin of Nottingham. This
machine although very slow in production actually reproduced the real
lace, at a cost slightly below that of the hand made lace. In another branch of
lace making by machinery, mechanical
ingenuity, combined with chemical treatment, had led to surprising results.
Swiss, German and other
manufacturers used machines in which a principle of the sewing machine
was involved. A fine silken tissue is thereby enriched with an elaborately raised cotton or thread embroidery. The
whole fabric is then treated with chemical mordants which, while
dissolving the silky web, do not attack the cotton or thread embroidery. A relief embroidery possessing the appearance of
band made raised needlepoint lace is thus produced.collections of hand-made lace chiefly exist in museums and technical
institutions, as for instance the Victoria and Albert Museum in London, the Musée des Arts Décoratifs in Paris, and museums
at Lyons, Nuremberg, Berlin, Turin and elsewhere. In such places the opportunity is presented of tracing in
chronological sequence the stages of pattern. and texture development.