Improvements in Mechanism for Operating the Heddles of Looms for Weaving.
Year: 1895

page_text: Date of Application, 8th June, 1895
Complete Specification Left, 9th Mar., 1896-Accepted, 11th Apr., 1896
PROVISIONAL SPECIFICATION.
Improvements in Mechanism for Operating the Heddles of Looms
for Weaving.
I, FREDERICK WADDINGTON of Sunny Mount, Keighley in the County of
York, Machine Maker, do hereby declare the nature of this invention to be as
follows:-
It has reference firstly to the class of mechanism for operating the heddles of
looms for weaving wherein the heddle-operating-levers receive or derive their
movements from draw-bars through other levers pivotally mounted upon said
heddle-operating-levers, and my said invention consists of arranging and constructing
the several parts constituting said inechanism so that they shall perform their
functions with more certainty and shall entail less cost in their production than
they have done heretofore.
In the heddle operating mechanism as heretofore produced the levers which are
pivotally mounted on the heddle-operating-levers, carry catches which are also
pivotally attached to them for the purpose of coupling them to the draw-bars,
however in accordance with my invention instead of these catches being mounted on
these levers I arrange segment-pieces to span the outer ends of these latter and to
slide upon suitably formed bearings (either stationary or provided with anti-friction
rollers) which form a path for them, in the segment of a circle the centre of which
is the centre of oscillation of the levers carrying the draw-bars.
These segment pieces carry the catches which are formed, as by having suitable
tail pieces, so that the pattern surface may act upon both sets of them through
simple intervening levers without necessitating the employment of additional parts,
while the draw-bars are thus allowed to be secured to their operating levers to move
with them in their circular path of motion, and the catches that they operate are
prevented from being disengaged or engaged with them at all times except at the
time when such change of position or engagement is desired.
66
The mechanism is arranged so that it may move the heddle-operating-levers in a
positive manner in both directions and thus produce what is known as positive"
mechanism, or so that it may only move it positively in one direction thus producing
"non-positive" mechanism."
The securing of the catches on their pivotal pins is effected by a tapering hole
being made through each of said pins and a split pin forced into and to fill such
tapering hole, while its bifurcations extend beyond to be bent over the edge of the
pivotal pin and so overlap a portion of the catch.
The mechanism for operating the pattern cylinder consists of a toothed wheel
mounted upon the cylinder's shaft which is operated by a ratchet formed to slide
upon a smooth part of said wheel, while its projecting tooth engages with the teeth
of said wheel. The tooth forming the ratchet is hinged to its sliding.part and is
arranged by a suitably formed adjusting piece; so that may be held firmly in one
direction and loosely in the other direction as the weaver may desire as to whether
the pattern cylinder is required to revolve in a forward or backward direction.
Provided it is desirable to have the cylinder rotated by the advancing as well as
the receding motions of the sliding ratchet, then an additional tooth is mounted
thereon to engage with an additional wheel. Or if the cylinder is required to move
through the space of two or more of its cards or lags then additional teeth are
mounted in the sliding ratchet.

page_text: The second part of my invention relates to means for coupling the heddle
operating mechanism to the heddles in the loom, and consists of forming and
arranging such mechanism so that said heddles are at all times moved through an
absolutely vertical path with well known advantages.
To accomplish this object I mount levers on the framework of the loom above
and below the heddles in such a manner that coupling pieces may be employed
between the extending ends of one set of levers and those of another set, while
their several fulcrums are so arranged that the central parts of these coupling
pieces are maintained in a straight path throughout their vertical movements, and
to these central parts I couple the beddles.
When two attachments to the heddles are required then I couple one set of
levers to another so that this latter may have the central coupling pieces arranged
to intervene between it and yet another set of levers.
The pivotal joints of the several levers as also those of the heddle-operating-levers
in the mechanism above described, are made by having certain holding pieces
arranged to fit them so that at any time any one of said levers may be taken out of
its position on its pivotal shaft without disarranging the others.
These holding-pieces are made to take into openings made in the levers so that
they are retained thereby in one direction while side stay pieces secure them in a
lateral direction.'
Dated this 7th den of Tune 1905
:
F. WADDINGTON,
Per Reginald W. Barker,
Agent.
COMPLETE SPECIFICATION.
Improvements in Mechanism for Operating the Heddles of Looms
for Weaving.
I, FREDERICK WADDINGTON of Sunny Mount, Keighley in the County of
York, Machine Maker, 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:-
It has reference firstly to the, class of mechanism for operating the heddles of
looms for weaving wherein the heddle-operating-levers receive or derive their
movements from draw-bars through other levers pivotally mounted upon said
heddle-operating-levers, and my said invention consists of arranging and constructing
the several parts constituting said mechanism so that they shall perform their
functions with certainty and shall entail less cost in their production than they have
done heretofore.
The second part of my invention relates to means for coupling the heddle-
operating-mechanism to the heddles in the loom, and consists of forming and
arranging such means so that said heddles are at all times moved through an
absolutely vertical path with the resultant advantages well known.
In the accompanying sheets of drawings which are illustrative of my invention;-
Fig. 1 is sectional elevation of heddle-operating-mechanism made in accordance
with my invention.
Fig. 2 is a view of parts shown by Fig. 1 as seen from above.
Fig. 3 is front elevation of the mechanism shown by Fig. 1 and illustrates the
parts employed for operating the pattern cylinder.
Figs. 4, 5 and 6 are top, end and sectional views respectively, illustrating said
parts for operating the pattern cylinder.
Figs. 7, 8, 9 and 10 are drawings in detail (Fig. 10 to an enlarged scale) of
parts hereinafter explained.
Fig. 11 is front elevation (reduced scale) of a portion of the framework of a

page_text: loom (the front bottom and top rails being omitted so that the parts otherwise hid
by these rails may be more clearly shown) showing the levers to which the heddles
are coupled.
Figs. 12 and 13 are drawings in detail (same scale as Figs. 1 to 9) illustrative of
parts hereinafter described.
Similar letters and figures of reference indicate similar parts throughout the
several views.
In the heddle-operating-mechanism of the class to which my invention applies
and as heretofore produced, the levers a, which are pivotally mounted, on the
heddle-operating-levers b, carry catches which are also pivotally attached to them
for the purpose of coupling them to the draw-bars c, c', however in accordance with
my invention instead of these catches being mounted on these levers a I arrange
segment-pieces d d' to spau the outer ends of these said levers a and these pieces d'd'
I arrange to slide upon suitably formed bearings ee¹ e² e³ (which may or may not
support and have anti-friction rollers ff¹ƒƒ³ mounted upon them) which bearings
form a path for said pieces d d' in the segment of a circle the centre g of which is
the centre of oscillation of the levers c² carrying the draw-bars c cl
These segment pieces d d' carry the catches, which are formed, as by having
suitable tail-pieces h³ ³, so that the pattern surface on the pattern cylinder k may
act upon both of them through simple intervening levers m m¹ without necessitating
the employment of additional parts as intervening between them, while the draw-
bars care thus allowed to be secured rigidly to their operating levers c² c³ to
move with them in their circular path of motion, and the catches h¹ that they
operate are prevented from being disengaged from or engaged with them at all
times except at the time when such change of position or engagement is desired.
The oscillatory motion of the levers c2c is obtained by any suitable crank
mechanism from any motor part of the loom by such mechanism being coupled to
the arm of the toothed segment c which is rigidly fixed on the shaft to the
other end of which is also fixed another toothed segment c6, the teeth in each
segment engaging with the teeth in the segments cc fixed on the levers c² ca
respectively.
When the catches have the additional hooked parts h h for laying hold of
the fixed bearings e e², then motion may be imparted positively to the levers b in both
their upward and downward movements (the levers a being held in one direction
by the hooks d² d³ pressing against the fixed bars el or e³ at the time, their opposite
ends are being moved by their draw-bars c or c while the said hooks * h on the
catches hold them in the other direction at the time their said opposite ends
are being moved by the bars c c¹ coming in contact with the hooks d d on the
pieces d) thus what is known as positive mechanism is produced however
when "non-positive" mechanism is desired, then these hooked parts ³ on the
catches as well as those d' d³ on the pieces d d' may be dispensed with.
66
23
The securing of the catches h h¹ on their pivotal pins is effected by a tapering
hole (see sectional part of Fig. 10) being made through each of said pins and a
split pinn forced into and to fill such tapering hole while its bifurcations n¹ n²
extend beyond to be bent over the recessed edge of the pivotal pin and so overlap
a portion of the catch or they have to hold.
The mechanism for operating the pattern cylinder & consists of a toothed wheel o
fixed upon the said cylinder's shaft, this wheel o being operated by a ratchet pl
pivotally mounted to swing freely in both directions upon the bar p which is
reciprocated by the segment c and which is forced into contact with the smooth
surface of the wheel o by the spring o¹, while its tooth or ratchet pl engages with
the teeth of the said wheel o.
The ratchet pl is made to operate the wheel o (and consequently the cylinder k)
by being held in one direction or other by the sliding piece q, that is to say, when
this piece q is in the position shown by Fig. 7 then the ratchet p' will move the
wheel o in the direction indicated by the arrow p² as the bar p is moving in the
direction indicated by the arrow p³ while when the said piece q is in the position

page_text: shown by Fig. 8 then the ratchet pl will be held so that it will move the wheel o
in the opposite direction to that indicated by the arrow p² as the bar p is also
moving in the opposite direction to that indicated by the arrow p³. The holding
of this piece g in its said respective positions is effected by the incline piece g¹
which is operated by the weaver rotating the rod 92 causing the crank q³ to raise
or lower same as desired, its position as shown by Fig. 6, causing the piece o to
assume the position shown by Fig. 7, while on the piece g¹ being raised it will
draw the piece q into the position shown by Fig. 8. The slot q* made in the
piece g allows this to reciprocate notwithstanding the incline q' passing through
same.
When the cylinder k is required to be moved through the space of two or more
of its peg-lags or cards, then additional ratchets p' are mounted on the bar
will readily be understood.
p as
To accomplish the second part of my invention I mount levers r, s, t and u
and r, s, t, and u' on the framework of the loom above and below the heddles v in
such a manner that coupling pieces w may be employed between the extending
ends of one set of levers and those of another set, while their several ful-
rums 2, 2, 12 and u² and r³, s³, t3 and u³ are so arranged that the central parts w
of these pieces w are maintained in a straight path throughout their vertical
movements, and to the central parts w I couple the heddles v by the cords or
other coupling pieces v¹.
When two attachments or coupling pieces v are required as is the case in broad
looms (and which arrangement is alone the one herein shown, since it will readily
be understood how the single coupling arrangement may be carried out) then
I couple one set of levers s to another t so that this latter may have the coupling
pieces intervening between it and the set u as do the coupling pieces w between
the levers r and s. As will be seen the rising movements of the levers r will have
to be transmitted to the levers s by pressing upon the piece w and to enable such
pressure the upper and lower edges respectively of the said levers' ends come into
contact with the solid parts w2w3 of the piece w shown in section Fig. 12, the
forces in the opposite direction being exerted through the pins ww.
The pivotal joints of the several levers r, s, t, u and r, s, t, and u' as also those
of the levers and the levers are made by having holding pieces y, arranged to fit
them as shown by Fig. 13, so that at any time any one of said levers may be taken
out of its position on its pivotal shaft by merely sliding the other levers to allow
its holding piece y to be displaced, such displacement being effected by moving it
in a lateral direction while side stay pieces hold them when in position.
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 ;-
1. In loom shedding mechanism of the class described, the combination of
segment-pieces, catches mounted on said pieces and the other parts operating in
connection with these segment-pieces and catches substantially as herein set forth
and described.
2. The combination of the several parts forming loom shedding mechanism of
the class described the same being constructed and arranged to operate sub-
stantially as specified.
3. The combination with loom shedding mechanism of means for transmitting
motion to the pattern cylinder of said mechanism substantially as herein described.
4. In loom shedding mechanism the combination of a pattern cylinder, a sliding
bar carrying a ratchet for operating said cylinder, and means for holding said
ratchet substantially as herein specified.
5. In loom shedding mechanism the combination of a pattern cylinder, a sliding
bar carrying a ratchet for operating said cylinder, means for holding said ratchet
and means whereby said holding device. may be manually regulated substantially
as herein set forth.

page_text: 6. In mechanism for operating the heddles of looms, the combination of series
of levers, coupling parts for joining one series to another and means for securing
the heddles to these coupling parts substantially as specified.
7. In mechanism for operating the heddles of looms the combination of two or.
more series of levers, coupling pieces for joining one series to another said
coupling pieces being constructed as described and means for securing the heddles
to these coupling pieces in order that said heddles may be operated substantially
as herein set forth.
8. In mechanism for operating the heddles of looms the combination of several
series of levers and means for holding or retaining these levers on their respective
pivotal shafts substantially as specified.
9. In loom shedding mechanism the combination with the levers therein of
detachable means for securing said levers on their pivotal shafts substantially as
herein described.
Dated thin 7th 1
1000
F. WADDINGTON.