Britain at Work
A Pictorial Description of Our National Industries
År: 1902
Forlag: Cassell and Company, Limited
Sted: London, Paris, New York & Melbourne
Sider: 384
UDK: 338(42) Bri
Illustrated from photographes, etc.
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BRITAIN AT WORK.
I 82
PIN-MAKING : WIRE DRAWING.
by foot power, the workmen being so dexter-
ous in this department that they can turn
out between 27,000 and 28,000 wires per day,
a number not far short of the machine output.
Up to this stage of the needle’s development
the work has been done by men, but here
woman steps in, appropriately enough, to
make the eye, so essential a part of the
implement.
Seated in rows behind the “ eyeing ”
machines, tidy-looking white-aproned women
as the impression
When these have
feed the endless revolving screws which carry
the wires under two punches exactly the
same size and shape
already made on them.
descended and pierced
the required openings
in each wire* (it will
be remembered that
each length is made
into two needles
placed head to head),
a small fork pushes
the wire aside and
gives the next one a
friendly push into its
place. For certain
branches of work
hand screw - presses
are used, and, al-
though the operation
is much slower, the
hand-ey er will eye
20,000 to 25,000
needles per day.
This process, it is scarcely necessary
to state, requires great care and skill.
The wires, which now bear a re-
cognisable resemblance to their final
shape, are next strung or “ spitted ”
on wire passed through both eyes
and handed to the “filer,” who files
off the burr made by stamping and,
breaking the double wire into two
lots of needles, files their rough
square heads into neatly rounded
form. The needles, as they may
now be called, are then threaded on
fine, slightly roughened wires, which
hang from iron bars like miniature
clothes - line props, along a table.
The table is capable of being moved
backwards and forwards by a crank,
and the motion, shaking the needles violently,
rubs the inside of the eye smooth against
the rough wire. This “ burnishing ” is to
prevent the fraying of the thread when the
needles are in use.
Although now perfect in shape the needles
are still useless, being soft enough to double
up in the fingers. Into the furnace they go
again, on iron pans, and after a certain time
are taken out and slid into a vat of oil.
Their sudden immersion hardens them, but
they are now at the other extreme and very
brittle, so they are tempered by a special
patented apparatus which
necessary elasticity.
gives them the
MACHINE.
PIN-MAKING