Improvements in Healds or Heddles for Looms for Weaving.
Year: 1898

page_text: Date of Application, 20th July, 1898
Complete Specification Left, 29th Mar., 1899-Accepted, 19th Aug., 1899
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Complete Specification Left, 29th Mar., 1899-Accepted, 19th Aug., 1899
PROVISIONAL SPECIFICATION.
Improvements in Healds or Heddles for Looms for Weaving.
We, JOHN CROSSLEY & SONS LIMITED, Carpet Manufacturers, and MATTHEW
GRAIIAM DOBSON and JOHN COCKER, Managers, all of Dean Clough Mills, Halifax,
in the County of York, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in healds or heddles for looms for
weaving and comprises improvements in heald frames whereby they are more
easily adjusted than hitherto and also improvements in mail or heald wires
as hereinafter more particularly described.
In carrying out our improvements in heald frames the top and bottom shafts
are provided at their extremities with connections, the outer ends of which are
slotted, the ends of the shafts passing into the slots and the parts being secured
together by rivets or the like. The inner ends of the connections are provided
with female screw-threads into which screw the threaded ends of lateral ad-
justing rods provided with flats to allow of their being turned by an ordinary
key or spanner. The screw-threads in the connections and on the adjusting rods
are right and left handed at the opposite ends so that by turning the adjusting
rods the two shafts will be moved towards or away from one another according
to the direction in which the said rods are turned.
Our improvements in mail or heald wires relate to that class of heald wires
which are made from two wires connected together.
Between the said wires and at the junction of the two mails we insert a bit
or bar of steel or other suitable metal so that when the wires and the bit or
bar are joined together a combined heald wire and double mail is formed, one
portion of which double mail may be circular as above described and the other
portion elongated, or both parts may be elongated. The wires are brazed together
at suitable points as hitherto.
Our mail or heald wires are constructed hook-shaped at either end as has
hitherto been done, but according to our improvements the hook which engages
with the top shaft of the heald frame is made shorter than that which engages
with the bottom shaft, so that at any time any one of our improved mail or heald
wires can be taken off and put on without any of the remaining wires being
detached from the shaft. For this purpose the side rods of the heald frame are
turned so as to bring the top and bottom shafts sufficiently near to one another
to allow a sufficient portion of the hook engaging with the bottom shaft to be
below the said shaft, it is then only necessary to lift the wire or wires to be
taken off or put on so that the shorter hook engaging with the top shaft will
pass over the same and the frame is then readjusted to its normal position.
We also propose to turn the hooks of our heald wires slightly to one side or
the other so that the wires forming each side of the mails are not equidistant
from the front of the loom thereby allowing as much room as possible for the
warp threads to pass between the heald wires.

page_text: By the use of our improved heald wires there is much less friction than usual
upon the warp threads which pass between the heald wires in weaving owing to
the more pointed ends at the top and bottom of our double mails and the absence
of any notch or indentation at the junction of the mails and further, the wear at
the lower part of the upper or circular mail is diminished by our bit or bar.
Dated this 20th day of July 1898.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
We, JOHN CROSSLEY & SONS, LIMITED, Carpet Manufacturers, and MATTHEW
GRAHAM DOBSON and JOHN COCKER, Managers, all of Dean Clough Mills, Halifax,
in the County of York, 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:-
This invention relates to improvements in healds or heddles for looms for
weaving and comprises improvements in heald frames whereby they are more
easily adjusted than hitherto and also improvements in mail or heald wires
as hereinafter more particularly described.
In the accompanying drawing,-
Figure 1 is a front elevation of a portion of a heald frame having our improve-
ments applied thereto :
Figure 2 is a side elevation thereof:
Figure 3 is a section on the line 33 Figure 1:
Figure 4 is an elevation of a mail or heald wire constructed according to the
invention:
Figure 5 is a view of a portion of one of the said wires seen at right angles to
Figure 4; and
Figure 6 is a view illustrating the parts from which our mail or heald wires
are made.
In carrying out our improvements in heald frames the top and bottom shafts a
and respectively of the heald frame are provided at their ends with connections c,
c which are slotted at their outer ends as shewn at c¹, c¹, the slotted ends
being passed over the extremities of the shafts and hinged thereto by means
of the rivets d, d. The inner ends of the said connections c, c are provided with
screw-threaded holes ², e³. f, f are rods, the extremities of which are formed
respectively with screw-threads f¹, f2 and are adapted to enter the screw-threaded
holes, formed in the connections c, c; the screw-threads f¹, f2 and the female
threads in the holes 2 and 3 corresponding therewith are respectively right and
left hand. With this arrangement, by turning the rods through the medium
of a key and the flats f³, f³ upon the rods it will be obvious that the top and
bottom shafts a and b will be moved towards or away from one another according
to the direction in which the rods are turned.
Our improved mail or heald wires are of the kind formed of two wires con-
nected together. Between the said wires g, g (Figures 4, 5 and 6), which are bent
or cranked at the centre and are joined together by brazing in the usual way,
we insert a bit or bar h (Figure 6) of steel or other suitable metal so that when
the wires and the bit or bar are joined together a combined heald wire and
double mail is formed, one portion of which is circular and the other portion ¿¹

page_text: elongated in the arrangement shewn in the drawing, although, as will be obvious,
both parts may be elongated.
The ends g, g2 of the wires are bent over so as to form hooks as usual, but
the upper hook g', that is to say, the hook which engages with the top shaft a
of the heald frame is made shorter than the hook which engages with the
bottom shaft of the said frame. The said hooks g' g² are also turned slightly
to one side as indicated in Figure 4 so that the wires forming each side of the
mails are not equidistant from the front of the loom thus allowing as much
room as possible for the warp threads to pass between the heald wires, this
arrangement being clearly seen from Figures 1 and 3 of the drawing.
With this construction of heald frame and heald wires any one wire can be
taken off and put on without the remaining wires being detached from the shaft.
To this end the rods f, f of the frame are turned as above mentioned so as to
bring the top and bottom shafts a and b sufficiently near to one another to allow
a sufficient portion of the hook 2 engaging the bottom shaft b to be below the said
shaft. The wire can then be lifted and taken off the top shaft a and the frame
adjusted to its normal position.
By the use of our improved heald wires there is much less friction than usual
upon the warp threads which pass between the heald wires in weaving owing to
the more pointed ends at the top and bottom of our double mails and the absence
of any notch or indentation at the junction of the mails and further, the wear at
the lower part of the upper or circular mail is diminished by our bit or bar.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is
_
1. In healds or heddles for looms for weaving the employment of a frame com-
prising top and bottom shafts and adjustable sides for enabling the said top and
bottom shafts to be moved towards and away from one another, substantially
as, and for the purpose, hereinbefore described.
2. In healds or heddles for looms for weaving, the arrangement of an adjustable
frame comprising top and bottom shafts provided at their ends with connections,
and rods formed at their two ends with right and left hand screw-threads adapted
to engage in the said connections substantially as, and for the purpose, herein-
before described.
3. In healds or heddles for looms for weaving, the employment of mail or heald
wires constructed of two wires bent and brazed together in the usual way and of
a steel or other bit introduced between the two wires to form the two mails, the
upper hooked ends of the wires being shorter than the lower hooked ends, sub-
stantially as, and for the purpose, hereinbefore described.
4. The improved heald frame hereinbefore described and illustrated in
Figures 1 and 2 of the accompanying drawing.
5. The improved mail or heald wires hereinbefore described and illustrated in
Figures 4, 5 and 6 of the accompanying drawing.
Dated this 29th day of March 1899
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.