Improvements in Loom Heald Operating Let-off and Take-up Mechanisms.
Year: 1892

page_text: Date of Application, 15th Feb., 1892
Complete Specification Left, 15th Nov., 1892-Accepted, 17th Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Loom Heald Operating Let-off and Take-up
Mechanisms.
We, RICHARD LONGDEN HATTERSLEY of Keighley in the County of York,
Machine Maker, and SIMEON JACKSON of the same place, Mechanic, do hereby
declare the nature of this invention to be as follows, that is to say :-
Respecting heald operating mechanism it relates to that class wherein the
operating cams or tappets are mounted upon supplementary shafts arranged
between the end frames of the loom and more especially to this class of mechanism
when it is used in connection with broad looms.
The supplementary cam shaft is arranged to be approximately nearer one side or
end frame of the loom than it is the other, and the levers or treadles operating in
connection therewith have additional arms which extend vertically from about their
pivotal parts thus making said levers to be somewhat of shape. The horizontally
extending ends of these levers are coupled by the usual joining pieces to the lower
staves of the healds on one side of the central part of the loom, while their pendent
arms are joined with connecting rods to the pendent arms of another set of levers
having their horizontal arms joined to the said lower staves of the healds but on
the other side of the central part of the loom than that above described.
The mechanism above the healds for allowing and aiding their movements by
the treadles or levers beneath, consists of the well known bowls and other
mechanisms, with the exception that the brackets or supports, on which the studs or
axle pins of said bowls are mounted, are formed so that one part may swivel on the
other to bring the healds nearer together for the purpose of weaving plain in contra-
distinction to weaving what is known as four or more treads.
The let-off mechanism in accordance with one of our arrangements, consists of
the employment of what is known as a hinged back rail which is operated by
weighted levers in such a manner that it always assumes or tends to assume a
certain normal position, the forces acting thereon by the passage of the warp over
this back rail being in an opposite direction to that in which it is moved by its said
weighted levers.
The usual friction chain or rope and weighted lever mechanism is arranged to
operate in connection with the warp beam, however this is arranged so that when
exerting its full power upon the warp beam this latter is thereby more firmly held
from rotating than is the hinged back rail from being moved forward, thus the warp
as it is being drawn into the loom first, moves the hinged back rail over which it
passes, until, by suitable connecting rods and parts, the weighting levers of this
back rail raise or otherwise release or relieve the beam levers of their weight when
the said beam will be momentarily liberated to slightly rotate and deliver its warp,
which uncoiled portion will be immediately taken up by the back rail and the
weights on both the said rail and the beam levers will once more descend, these
operations being incessantly repeated so long as the loom continues in motion.
The other let-off mechanism to which our invention relates is of the class known
as the worm let-off" the same being used in connection with what is known as
"positive take-up "mechanism and in accordance with our said invention we arrange
the gearing and other parts by and through which motion is imparted from the well
known motor parts of the looms to these said operating parts, in such a manner that
when the operative or weaver changes the positions of certain of the handles for
the purpose of "lagging back," the direction of motion of these let-off and take-up
mechanisms will be reversed the former for the time being, being made the

page_text: "take-up" for rewinding the warp on to the beam, while the latter will be the
"let-off" by unwinding the woven fabric from the piece beam.
To effect this, on each of the well known cross shafts upon which the worms are
mounted for operating the warp beams at the back of the loom we mount a double
clutch to slide upon a key or feather the said clutch being toothed to gear with one
or the other of two bevel wheels mounted in proximity with it, the bevel wheel on
one side being formed on or attached to the well known operating ratchet wheel
and when the clutch is in gear with it the shaft is moved in the proper direction,
while when the clutch is in gear with the other bevel wheel which is driven by the
former by being geared therewith through an intermediate bevel gear the shaft is
turned or rotated in the opposite direction, and to effect the changes in the positions
of this gearing clutch the same is joined by suitable levers and connecting rods to
the handle operated by the weaver.
Dated thie 13th dar of February 1899).
COMPLETE SPECIFICATION.
Improvements in Loom Heald Operating Let-off and Take-up
Mechanisms.
We, RICHARD LONGDEN HATTERSLEY of Keighley in the County of York,
Machine Maker, and SIMEON JACKSON of the same place Mechanic, do hereby
declare the nature of this invention and in what manuer the same is to be
performed, to be particularly described and ascertained in and by the following
statement, that is to say :-
Respecting the heald operating mechanism it relates to that class wherein the
operating cams or tappets are mounted upon supplementary shafts arranged between
the end-frames of the looms and more especially to this class of mechanism when
it is used in connection with broad looins, while the let-off mechanism to which it
relates are in the first place of the class known as friction motions and in the second
of the class known as "positive" let-off motions. The "take-up" mechanism being
of the kind arranged to operate in connection with this latter (that is―" positive
let-off mechanism.
In order that our said invention may be clearly understood we have hereunto
appended sheets of drawings illustrative thereof to which, by figures and letters,
reference is made in the following description.
Fig. 1 is front elevation of a portion of a loom showing the application of our
improved heald operating mechanism.
Fig. 2 is sectional end elevation of parts shown by Fig. 1.
Figs. 3 and 4 are drawings in detail showing the relative positions assumed by
certain of the parts as hereinafter described.
Fig. 5 is back elevation of a portion of one end of a loom showing the application
of our improvements in connection with friction let-off mechanism at this part, those
on the other end of said loom being exactly the same.
Fig. 6 is sectional end elevation of parts shown by Fig. 5..
Figs. 7 and 8 are front and sectional end elevations of a portion of a loom and
illustrate our improvements in connection with the "positive" let-off and take-up
mechanism.
In all the drawings the same letters and figures of reference indicate the same
parts.
Relative to the heald operating mechanism the supplementary cam shaft a¹ is
arranged to be nearer one side or end frame 6 of the loom than it is to the other
end frame 6', and the levers or treadles c, operating in connection with the cams or

page_text: tappets a, have additional arms c¹ which extend vertically from about their pivotal
parts thus making said levers or treadles to be somewhat of ☐ shape. The
horizontal extending arms of these levers c are coupled by the usual joining picces e
to the lower staves of the healds d on one side of the central part of the loom,
while their pendent arms c' are joined with connecting rods to the pendent arms y¹
of another set of levers having their horizontal arms joined by the parts e¹ to
the said lower staves of the healds d but on the other side of the central part of
the loom than that above referred to.
The mechanism above the healds d for allowing and aiding the movements of
these said healds d by the levers c beneath, consists of the well known bowls h h¹
and other mechanisms with the exception that the brackets or supports k k¹ on
which the studs or axial pins k² of said bowls h h¹ are mounted, are formed so that
one part 2 may swivel on the other part 3 to bring their connections to the
healds d nearer together, as shown by Fig. 4, by which means the first and second,
and third and fourth healds may be joined together instead of the first and third,
and second and fourth as shown by Figs. 2 and 3.
The parts 2 of the supports are made to slide in an opening made in the
bracket m in order to allow their adjustment by the crank-shaft n in an elevated
position, as shown by Fig. 2 (which is their position when in operation), or in a
lowered position, as shown by Fig. 3 (which is their position when the healds d are
required to be " "levelled or in the said plane) such movements of the crank shaft n
"
being effected by the operative by means of the winch or handle n¹.
Relative to the "let-off" mechanism, in accordance with one of our arrangements,
we make use of what is known as a back-rail o mounted upon the hinged lever p,
pivoted at 2, the same being operated in one direction by the weighted lever q
pivoted at in such a manner that it always assumes or tends to assume a certain
normal position, the forces acting on said back rail o by the passage of the warp r
over same, being in an opposite direction to that in which it is moved by its said
weighted lever 4.
The usual friction chains (or rope might be substituted for said chain) and
weighted lever t are arranged to operate in connection with the warp beam u,
one end of the chains being attached to the levert while the other is fixed
to the bracket v, however this levert is arranged so that when exerting its full
power upon the warp beam u said beam u is thereby more firmly held from
rotating than is the back-rail o from being moved forward by the warp r, thus
the said warp r as it is being drawn into the loom firstly moves the rail o over
which it passes, until, by the counecting rods w and w¹ (the latter having one
of its ends pivoted to the lever 9 while its other end is made to pass through an
opening in the levert or in a part attached to this lever, the stop piece w
preventing it from passing too far through said opening) the weighting lever q
raises the levert so as to relieve the chains of its actions or weight at which time
the said beam will be momentarily liberated to slightly rotate and deliver its
warp r, which uncoiled portion will be immediately taken up by the rail o moving
to resume its normal position from which it had previously been drawn by the
tightening of the warp r, and the weighted levers t and q will by gravity again
descend so that the chains will again grip the beam u, these operations being
incessantly repeated so long as the loom continues in motion.
The other let-off mechanism to which our invention relates is of the class known
as "the worm let-off," the same being used in connection with what is known as
a "positive take-up" mechanism, and in accordance with our said invention we
arrange the gearing and other parts by and through which motion is imparted from
the well known motor parts of the loom to these said operating parts, in such a
manner that when the operative or weaver changes the positions of certain of the
handles for the purpose of "lagging back," the direction of motion of these let-off
and take-up mechanisms will be reversed the former for the time being, being made
the "take-up" for rewinding the warp on to the beam while the latter will be the
"let-off” by unwinding the woven fabric from the piece beam.

page_text: To effect this object, on each of the well known cross shafts 5 and 5*, upon which
the worms 6 and 6 are mounted for operating the warp beams 7 and 7" by gearing
with the wheels 8 and 8* fixed upon these said beam 7 and 7", we mount a double
clutch 9 or 9" to slide upon a key or feather fixed to said shafts, the said clutches 9
and 9 being, toothed to gear with one or the other of the two wheels 10 or 1i,
or 10 or 11, mounted loosely upon said shafts 5 and 5ª in proximity with said
clutches, the bevel wheels 10 and 10 being formed on or attached to the well
known operating ratchet wheels 12 and 12, respectively, and when the clutches 9
and 5* are
and 9ª are in gear with said wheels 10 and 10" their respective shafts
moved in the proper direction for working with the other parts of the loom when
same is performing its proper functions, while when the clutches 9 and 9* are
in gear with the wheels 11 and 11* which are driven by being geared with the
wheels 10 and 10 through the intermediate wheels 13 and 13 their respective
shafts are rotated in the opposite direction, and to effect the changes in the positions
of these gearing clutches 9 and 9* the same are joined by the operating levers 14
and 14, rods 15 and 15", levers 16 mounted upon the small shaft 16", levers 17, 17ª,
17b, and 29 and rods 18 and 18%, to the handle rod 18" operate by the weaver, so
that when said rod 18" is moved in the direction of the arrow y (which is the
direction in which it is moved for changing the positions of the clutches 9 and 9" to
effect a reversal in the movements of the parts above described) the levers 27
and 24 are moved, in the proper direction for effecting a reversal in the movements
of the take-up mechanism as is fully described in the Specification of our Patent
No. 10425 of 1887, the parts indicated by the Figures 20 to 29 inclusive, of the
said Specification No. 10425 of 1887 are the same as those indicated by the same
figures in our present Specification.
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. The combination and arrangement of parts forming the heald operating
mechanism substantially as herein set forth and described.
2. In heald operating mechanism of the class herein described, the employment
of swivel bearings for the bowls or pulleys over which the attachments to the bealds
have to pass substantially as and for the purpose specified.
3. The combination, in friction let-off mechanism for looms, of a hinged back
rail, a weighted lever operated by or through said hinged back rail, a weighted
lever for applying power to the friction chain or rope of a warp beam, and means
for coupling or joining these weighted levers together so that the one shall operate
in concert wth the other substantially as berein specified.
4. The combination and arrangement of parts forming the friction let-off
mechanism substantially as herein set forth and described.
5. The combination and arrangement of means whereby the positive let-off
mechanism of a loom is joined or connected with the positive take-up mechanism
of said loom in order that when the direction of motion of the one is reversed so
also is that of the other reversed substantially as and for the purpose described.
6. The combination in loom "let-off" mechanism of the double clutches with
means for manually operating same simultaneously, substantially as herein specified.
Dated this 14th day of November 1892.
RICHARD L. HATTERSLEY,
SIMEON JACKSON,
Per Samuel Hey,
Agent.