Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
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FIELD OF THE INUENTION
This invention relates to a loom and, more partisularly,
to a harnesses and heddles assembly for a loom.
~ESCRIPTION OF THE PRIOR ART
The heddles of the looms have all so far been made ~n
the same manner; that i8 with an opening or eye ~t their csnter
to thread a warp yarn or warp thread through it as thro~ the
opening or eye of a sewing needle. This i3 a time-consum~ng
jab that i 8 difficult to make for many persons due to the strain
ùn the eyes of the user and to the skill required with the
Pingers. Quite often, such strenuous threading prevented older
persons to weave on a loom a8 they had wanted to do.
SU~MARY OF THE INUENTION
It is a general ob~ect o~ the present invantion to provide
heddles thet are adapted to more easily thréad the warp yarn
or threads through thsm.
It is another,object oF the present invention to provide
loom harner~ses and heddles that are of improved and yet of simple
and practical construction end use.
It ie a mor0 spsci~ic object of the prese~t invention to
provide heddles with threading eyeR, esch provided with a laterally-
opening 810t for convenient engagament and threading of the warp
yarn or thread through it.
It i5 a further ob~ect of the present invention to provide
loom harnesses and heddles in which the heddles can be easily
attached and detached from the harne~ses.
BRIEF ûESCRIPTION OF THE DRAWINGS
The above and other ob~ects and advantages o~ the present
invention will be better understood with refsrenca to ths follow-
ing detailed description o~ preferred ,rhcdircnts thereof which
are illus~rated, by way of example, in the accompanylng drawings,
in which:
Figure 1 is a perspective view of a portion of a loom
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harness and heddles assembiy according to one embodiment of
ths present invention;
Figure 2 i~ a side ViBW of one heddle shown in Figure
l;
Figure 3 is a view of the same haddle as seen looking in
ths direction o~ the harnes~;
Figurs 4 is a view similsr to the view of Figure 3 but
with the holder channel releasing the legs of ths heddles;
Figurs 5 i~ an eleuation view of bent portions of the
wirss cooperatively forming the threading eye of a heddle;
Figures 6 and 7 are elsvation view~ of the bent portion
of the two wires forming a heddle, a~ seen in the longitudinal
direction of the warp yarn or thread;
Figure 8 is a perspective view of a portion of a loom
harness and heddles assembly according to another er'od' r nt of
the present invention;
Figure 9 ~8 a perspectivs view of one heddle ~hown ln
Figure 5;
Flgures 10 and 11 are elavation views of the same heddle
as seen in th0 warp and the weYt directions respectively;
Flgure 1~ is a view of the bottom of the heddle as shown
in Figure 11, but with the holder channel releasing the legs of
the heddle;
Figure 13 is a schematic side view of a loom to lllustrate
its harnesses and heddles assembly;
Figure 14 is a perspective view of one end of a loom
harnesg and an associated locking mechani~m;
Figure 15 is a side view of the locking mechanism and
associated elsments o~ Figure 14;
Figures 16 and 17 are cross-sectional views as ssen
along lines 16-16 and 17-17, rsspectivsly, in Figure 15;
~igure 1~ is a vlsw of a portion of a holder channel seen
in longitudinal cross-section thereof; and
Figure 19 i9 a transverse cross-section of ths ~ame
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holder channel as seen along line 19-19 in Figure 1~.
DESCRIPTION OF THE PREFERRED EMOODII~IENTS
The loom harness and heddles as~embly lllustrated in
Figures 1 to 7 $nclusive comprises a harness 10 lnoluding a crossbar
11 arranged on its edge and th~s defining a top and a bottom edges
and a front and a rear faces as seen in the warp direction.
A series of a desire~ numbsr of heddles 12 is mounted
on the crosebar 11 and slidably displaceah~e along lt. ,~ach heddle
12 is of wire construction and includes a root or leg portion and
a main upper portion. Each wire heddle 12 i8 made Df two wir~ 13
and 14. The leg portion of each heddle 12 is formed by the wires 13
and 14 having legq 15 that are bent to straddle on the opposite
sides or faces of the corresponding crossbsr 11. Each leg portion
15 ia bent to form a~ pair of small curveQ 16 and a more~pronounced
bend 17 extending in a weft plane as compared to the curves 16
that are formed in a warp plane.
The crossbar 11 is prefe~ably provided with top-raunded edges
so that the leg portions 15 of the wires can easily follow the
traneverse outline of the crossbar. The small curves 16 snap into
the pair of grooves 1~ in the opposite faces o~ the crossbar. This
locks the heddles against being pulled off the crossbar upon shedding
of the harnesses. When so held~ the leg portions 15 havs their bent
portion 17 held flat against the corresponding faces of the crossbar
to hold the heddles against rotation. A channsl-shape holder 1~,
having flared flanges, engageq over the bottom edge of the crossbar
and the lower end of tha wires 13 and 14 to hold the leg portions as
afore mentioned and, thus, the complete heddles in proper upright
position.
The upper portion of the heddle has a portion 20 forming
an eye in which the warp yarn or thread is threaded. As can be
readily seen, the threading eye portion 20 is made by the wire 13
that is three-dimensionally bent to form a downward projection 21
and by the wire 14 that is also three-dimensionally bent to form
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an upward projection 22. The projections 21 and 22 are ~paced ~part
to form a gap or opening bet~en them, as best seen in Figures 3 snd
5. Thus, those projectionq are curved in a weft plane to for~ the
thrsading eye configuration, as ~een in ~igure3 2, 6, and ~ and they
are curved away from each other in the warp direction to form that
threading opening. Thus, a yarn or thraad 23 i8 sngaged laterally
through the opening between tho~e projsction~ and~ thus, i~ threadsd
in the eye for~ed by those bent portiona of the wires 13 and 14. The
latter are rigidly welded or ~oldered together abovs and below the eye-
Porming portlon 20 of the heddle. A rsrsule 24 clamps the wires 13
and 14 together at the lower end of their weided portion.
The loo~ harne~e and heddles a~embly illustrated infigures ~ So 12 inclu~ivH comprisee a hern 8~ 25 including 8 CrO88bar
26 arranged on its edge and~ thus, defining a top and a bottom edges
and a front and & reer face~, as seen in the warp direction.
~ ~eries Or a de~ired number of heddles 27 i9 mounted
on the cro~bar 26. Each heddle 27 is of plate construction and includeg
a root or leg portion and a main upper portion. ~ach heddls 27 i~
made of a singls plate that is cut out and;bent to pri~arily form a
root or leg portion and a main upper portlon. Tba leg portion i8 formed
by a longitudinal cut of the plute to separ~te the same into a psir
of legs 2~, 29 that are bent to extend flat against the oppooite faces of
the corl6sponding crossbar 26. Each leg 28, 29 is i9 formed with a ehort
curve 30 arranged to engage in a corresponding groove 31 in each face Or
the cro~sbar. A channsl-~hape holder 19, having flared flenges, engages
over the lower edge or the crnssbar 26 and over the lower end Or the legs 2
to clam~iingly hold the latter in straddling position on th~ opposite ~idHs
of the crossbar and with their short curve~ 3û locked in the groove~ 31.
The mnin upper portion of the heddlo 27 extends edgewise
in the warp direction and i~ for~ed with a Pold 32 extending longiduin~lly
of it to provide ~tiffenlng to i~. That eame ~ain upperlportion is
also bent to de~ine its threading nye portion 35. The
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latt~r i3 fermed with a pair o~ rut-out t,aeth 34, 35 and with an
outwardly-bulging portion 36. The te~ath 34, 35 are outwardly bsnt
in opposits direction relativu to ths outward bulging of the
portion 36 to cooperatively form with it a threading eye, as 3ho~n
ln Figure lO. The teeth 34 and 35 pro3sct upwardly and dounwardly
respectively and are spaced apart to form an opening~betwelan to
engage a yarn or thread laterally through it into the eye of the
heddle.
Figure 13 schemiatically illu3trates a loom in~luding
the conventional ,and rolls 38, 39 and four harnes~es lO or 25, ac-
cording to the prssent invention. Each of the harnesse~ includas acrossbar ll or 26 and the corresponding heddles l2 OD 27.
It i8 to be noted that heddles 12, 27 extend upwardly
from their threading eye portion 20, 33 to a sufficient height, BO that,
even in lowered position, the top end will always remain above ad~acent
warp threads in elevated position. Th~arefors, there is no possih~11ty
for the warp threads to accidentally become out o~ their intended
position relative to the heddles.
Figures 14 to l9 inclùsive illustrate a mechanism
to re~easahly lock the channel holder l9 and ;the heddle~ 12, 27 in
operative poeition. Thi~ locking mechanism forms a spring latch
lncluding a rectangular shspe rod 3a having oppo~lte free end~
pivotally re~trained by tabs 39 cut out in the web portion of the
channel holder l9. A roller 40 is rotatively mounted on the rectan-
gular rod 38 opposite the free ends thereof to roll over
the upper edge of tha crossbar ll or 26. A spring blade 41 is secured
on that upper edge and forms a concave recess 42 in whlch the roller
40 may rest to operatively bias the channel holder l9 in the afore-
mentioned operative positlon. The channel holder may be released by
rolling the roller 40 down the spring blade 4~. This allows removal or
3û disp1acar~nt of the corresponding heddles.
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