Improvements in Looms for Weaving Wire.
Year: 1895

page_text: Date of Application, 12th Dec., 1895
Complete Specification Left, 9th Sept., 1896-Accepted, 10th Oct., 1896
PROVISIONAL SPECIFICATION.
Improvements in Looms for Weaving Wire.
I, ALEXANDER MACDOUGALL, Managing Director, of George Christie, Limited,
of 59, Ladywell Street, and 33, South Kinning Place, in the County of Glasgow,
North Britain, Wire Cloth Manufacturers, do hereby declare the nature of this
invention to be as follows, that is to say:
My said invention has for its object to improve and render more uniform the
weaving of wire, and is applicable to any loom in which, as hitherto worked
the taking up of the woven wire cloth is effected at intervals and not at each
pick.
In looms in which each inch (or other portion) of the woven wire is taken up at
a time the beat-up of the lathe varies whilst an inch is being woven, and the bottom
of the reed acts at the commencement of the inch, but, owing to the position of the
shed warp wires, the contact of the reed with the fell takes place at gradually
higher parts of the reed whilst the inch is being woven. From this cause a slight
inequality in the beat-up arises and shows itself in a mark or want of uniformity
in the woven wire cloth.
To remedy the defect referred to I make the reed movable in the lathe swords,
and I cause it to rise gradually as the weaving of the inch proceeds, so that the
contact of the reed with the fell may always take place at the same part of the
reed. The desired movement of the reed can be obtained by various mechanical
devices. For example; the ends of the small frame in which the reed is held
may be acted on by cams on a transverse horizontal spindle carried by the lathe
swords, this spindle being turned to a small extent at each beat-up by means of a
ratchet wheel on it acted on by a pawl moved by the reciprocation of the lathe.
The cams are shaped so as at each completion of an inch to drop or lower the
reed into the position it should have on starting a fresh inch.
Dated this Eleventh day of December 1895.
EDMUND HUNT,
Applicant's Agent.
1, ALEXANDER MACDOUGALL, Managing Director, of George Christie, Limited,
of 59, Ladywell Street, and 33, South Kinning Place, in the County of Glasgow,
North Britain, Wire Cloth Manufacturers, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement that is to say :-
My said invention has for its object to improve and render more uniform the
weaving of wire, and is applicable to any loom in which, as hitherto worked the
taking up of the woven-wire cloth is effected at intervals and not at each pick.
In looms in which each inch (or other portion) of the woven wire is taken up
at a time the beat-up of the lathe varies whilst an inch is being woven, and the

page_text: bottom of the reed acts at the commencement of the inch, but owing to the position
of the shed warp wires, the contact of the reed with the fell takes place at
gradually higher parts of the reed whilst the inch is being woven. From this
cause a slight inequality in the beat-up arises and shows itself in a mark or want
of uniformity in the woven wire cloth.
To remedy the defect referred to I make the reed movable in the lathe swords,
and I cause it to rise gradually as the weaving of the inch proceeds, so that the
contact of the reed with the fell may always take place at the same part of the
reed. The desired movement of the reed can be obtained by various mechanical
devices, but by way of example and in order that my said invention and the
manner of performing the same may be properly understood I hereunto append two
sheets of explanatory drawings to be hereinafter referred to and showing two
modes of effecting my improvements.
Figures, 1, aud 2, on Sheet, 1, of the drawings, are a transverse vertical_section
and a sectional back elevation showing parts of a loom. Figures, 3, and 4, are
similar views of a second modification, Figure, 5, being transverse vertical section
of a detail.
Figures, 6, and 7, on Sheet, 2, are general views of a loom, as at right angles to
each other showing the application of the second modification. In these drawings
the same reference letters are used to mark the same or like parts wherever they
are repeated.
As shown in Figures, 1, and 2, of the drawings the reed, A, is held in what may
be termed a small frame, B, the top of which is carried by the lathe swords, C,
and the bottom being in the lathe bed, D, this frame, B, being so shaped that the
reed, A, can rise and fall. Rods, E, on the underside of the bottom of the
frame, B, project down through openings in the lathe bed, D, and are acted
on by cams, F, on a transverse horizontal spindle, G, carried by the lathe
swords, C, this spindle, G being turned to a small extent, on the lathe retiring
after each beat-up, by means of a ratchet wheel, H, on it acted on by
a pawl, J, carried by a lever, K, centered loose on the spindle, G, the lever
being raised to the desired extent on the reciprocation of the lathe by a
projection, L, fixed to the loom framing shown by dotted lines in Figure, 1.
A guide bracket, M, with an adjustable screw, N, is provided to prevent the
lever, K, falling too far on the beat-up of the lathe. The cams, F, are so shaped
that through their action on the ends of the rods, E, the reed, A, rises gradually
as the weaving of the inch proceeds, so that the contact of the reed with the fell
always takes place at the same part of the reed; and so that at each completion of
an inch the reed drops into the position it should have on starting a fresh inch.
In the modification shown in Figures, 3, to 7, inclined or cam surfaces, P, are
formed on the bottom part of the frame, B, which part is in this modification
movable horizontally as well as vertically. The inclined surfaces, P, bear in
counterpart recesses, formed in the lathe bed, D, and the bottom part of the
frame, B, is moved to one side and raised by the action of the inclined surfaces, P,
in the recesses to a small extent, on the lathe returning after each beat-up, by the
turning a ratchet wheel, H, on one end of a screwed spindle, R, carried in the
lathe swords, C, and screwing in a block, S, which bears on one end of the bottom
of the frame, B. The ratchet wheel, H, is turned by a pawl, J, carried by a
lever, K, centered loose on the spindle, R, the lever being moved to the desired
extent on the reciprocation of the lathe by encountering a projection, L, shown
by dotted lines in Figure, 3, another projection, N, preventing a spring, T, from
pulling the lever, K, too far over on each beat-up of the lathe. Ou each movement
of the ratchet wheel, H, the block, S, and bottom part of the frame, B, is moved
along to a slight extent the bottom part of the frame being at the same time also
raised slightly by the action of the inclined surfaces, P. This makes the reed, A,
rise gradually as the weaving of the inch proceeds, so that the contact of the
reed, A, with the fell always takes place at the same part of the reed. The part
of the block, S, in which the screwed spindle, R, turns, as shown in Figure, 5, is

page_text: made with a screw, U, only on one side, a spring, V, keeping the half screw, U,
in contact with the spindle, R, but on completion of an inch the weaver pushes.
over a lever, W, centered on the block, S, compressing the spring, V, and with-
drawing the half screw, U, from the spindle, R, this allows a spring, X, which
acts on the other end of the bottom part of the frame, B, (which spring was.
compressed during the weaving of the inch) to expand and push the bottom part
of the frame, B, and the block, S, back into the position it should have on starting
a fresh inch; and the reed, A, will also drop into a similar position. The lever, W,
can then be let go when the spring, V, will force the half screw, U, again into
contact with the spindle, R.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
In a loom for weaving wire and having a periodical take-up action making the
reed rise gradually as the weaving proceeds and return to the starting position after
each take-up movement by mechanism substantially such as is hereinbefore
described.
Dated this Eighth dar of Sentember 1896.
EDMUND HUNT,
Applicant's Agent.