Improvements in Let-off or Warp-tension Mechanism and in Heald Mechanism of Looms for Weaving.
Year: 1898

page_text: Date of Application, 27th May, 1898
Complete Specification Leit, 27th Feb., 1899-Accepted, 15th Apr., 1899
PROVISIONAL SPECIFICATION.
Improvements in Let-off or Warp-tension Mechanism and in Heald
Mechanism of Looms for Weaving.
We, RICHARD LONGDEN HATTERSLEY, of North Brook Works, Keighley, in the
County of York, Machine Maker, and SIMEON JACKSON, of the same address,
Manager, do hereby declare the nature of this invention to be as follows:-
The first part of our invention refers to let-off mechanism as applied to looms
for weaving lappit goods, and is an improvement on that included in our Speci-
fication No. 24,781 of 1895.
It consists of one or more arrangements attached to the loom-frame of an
oscillating roller with levers and fixed rod and mounted in or about the same
vertical plane as the healds.
The lappit threads pass over the oscillating roller, and in this position the
tension can be rendered more sensitive than heretofore.
The second part of our invention refers to the heald mechanism of looms, to
which the well-known inside treading movement is applied for operating the
healds.
Hitherto the healds have been connected at the top side to bowls, but in this
our improvement the connections from the healds are extended and after passing
over the said bowls are attached to another sett of bowls, the latter are connected
together and mounted loosely on a stud.
Our present arrangement consists of a sett of two bowls working in connec-
tion; to one bowl 4 healds are connected, and the other bowl is connected with,
and the motion regulated by, one of the tappets. The diameter of the 2 bowls
are arranged in accord with the movements imparted to the healds by the tappets
and thus they, the bowls, compensate for each other, and the movement of the
healds is rendered positive.
Any number of bowls may be employed and their diameters arranged to suit
the movement of the healds for any required design.
To this sett of bowls we also connect a lever by means of which, the operator
can change the position of same, and thus bring the healds level when necessary.
In order to make clear the second part of our invention we append hereto a
sheet of drawings marked with figures of reference.
Figure 1 is a front view of the motion. Figure 2 a plan view of same.
Figure 3 an end view of same. Figures 4, 5 and 6 are hereafter referred to.
The healds 1, 2, 3, 4 are operated by 4 tappets 5, 6, 7, 8 by means of the levers 9,
10, 11, 12 and the latter are connected with another series of levers 13, 14 15,
16 by the rods 17, both series work in unison and transmit the motion to the
healds as shown in Figure 1.
Five tappets are rigidly mounted on the shaft 18, four as already mentioned
for the healds and one to operate the lever 20 which is connected by chain or
rod 21, see Figures 1, 2, 3, with a bowl 22. The shaft 18 receives its motion

page_text: from the ordinary low shaft 23 of the loom by wheels 24, and 25, see Figure 3.
The healds are connected at their top side to a bowl 26, the straps 27, 28,
29, 30 from the healds passing over the pulleys 31, 32, 33, as shown in Figure 2.
The bowl 26 is connected to the before mentioned bowl 22 and is mounted on
the same stud 34, and thus they both work in unison. The 4 tappets 5, 6, 7, 8
are designed S to the round namely 3 up 1 down, 1 up 3 down and are shown
in Figures 1, 3, 4, 5, 6, imparting a lift to the healds of 3 up and 1 down, the
tappet 19 which is designed S to the round 1 up 1 down 1 up 1 down, I up 1 down,
1 up 1 down, is then at its active position and the bowl 22 is drawn forward and
as the diameter of this bowl is twice the diameter of the bowl 26 half the healds
namely 2 are drawn up, it will also be seen that one heald is allowed to rise
by reason of one being held down and thus the motion of 3 up 1 down is rendered
positive.
On the next operation the motion imparted from the tappets to the healds
allows 1 up 3 down, at this time the tappet 19 does not operate the lever 20
and the bowl 22 recedes and thus half the healds namely 2 are allowed to fall
and as already said one heald is allowed to descend by reason of one being held
up. The movement of 1 up 3 down is rendered positive.
We show in Figure 1 the arangement by which the healds are brought level
when necessary. The stud 34 carrying the bowls 22 and 26 is mounted in a
stand 35 and the latter is mounted loosely on the stud 36. The stand 35 is
connected by rod 37 to one arm of the lever 38 and when the other arm is raised
the stand 35 is brought forward and thus the healds are levelled.
In this case the tappets are arranged to impart the following lifts to the
healds. 3 up 1 down, 1 up 3 down, 3 up 1 down, 1 up down, up 1 down,
1 up 3 down, 3 up 1 down, 1 up 3 down, and as already explained each opera-
tion is rendered positive. This is one arrangement but any other may be arranged
on the same principle.
Dotad in da
L
1000
Improvements in Let-off or Warp-tension Mechanism and in Heald
Mechanism of Looms for Weaving.
We, RICHARD LONGDEN HATTERSLEY, of North Brook Works, Keighley, in the
County of York, Machine Maker, and SIMEON JACKSON, of the same address,
Manager, 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:-
The first part of our invention refers to let-off mechanism as applied to looms
for weaving lappit goods, and is an improvement on that included in our Speci-
fication No. 24,781 of 1895.
It consists of one or more arrangements attached to the loom-frame of an
oscillating roller with levers and fixed rod and mounted in or about the same
vertical plane as the healds.
The lappit threads pass over the oscillating roller, and in this position the
tension can be rendered more sensitive than heretofore.
The second part of our invention refers to the heald mechanism of looms to

page_text: which the well-known inside treading movement is applied for operating the
healds. Hitherto the healds have been connected at the top side to bowls, but
in this our improvement the connections from the healds are extended and after
passing over the said bowls are attached to another sett of bowls, the latter are
connected and mounted loosely on a stud.
Our present arrangement consists of a sett of two bowls working in connec-
tion; to one bowl four healds are connected, and the other bowl is connected with,
and the motion regulated by one of the tappits. The diameters of the two bowls
are arranged in accord with the movements imparted to the healds by the tappits
and thus they, the bowls, compensate for cach other and the movement of the
healds is rendered positive.
Any number of bowls may be employed and their diameters arranged to suit
the movement of the healds for any required design.
To this sett of bowls we also connect a lever by means of which the operator.
can change the position of same and thus bring the healds level when necessary.
In order to make clear our invention we append hereto 2 sheets of drawings
marked with figures of reference in which like figures denote like parts.
Fig. 1, is a front view of the heald mechanism, Fig. 2, a plan view of same.
Fig. 3, an end view of same Figs. 4, 5, 6, 7, 8, are hereafter referred to. Fig. 9
is an end view of the let-off mechanism and Fig. 10, a front view of same.
As shown in Figs. 9 & 10 we attach the stands 39 & 40 for the let-off motion
to the front part of the loom and in these are loosely mounted the rods 41 & 42,
to the latter we connect the two levers 43 & 44 & the two levers 45 & 46. These
levers carry the light rollers 47 & 48 & a tension is applied to same by the
springs 49 & 50. The lappit threads pass from the beams 51 & 52 over the
rollers 47 & 48 in the manner shown in Fig. 9, and as these rollers are situated
in or about the same vertical plane as the healds the tension on the lappit
threads can be rendered more sensitive than heretofore.
In the second part of our invention the healds 1, 2, 3, 4, are operated by the
four tappits 5, 6, 7, 8, by means of the levers, 9, 10, 11, 12, and the latter are
connected with another series of levers 13, 14, 15, 16, by the rods 17, both series
work in unison and transmit the motion to the healds as shown in Fig. 1.
Five tappits are rigidly mounted on the shaft 18, four as already mentioned
for the healds and one to operate the lever 20, which is connected by rod or
chain 21, see Figs. 1, 2, 3, with a bowl 22. The shaft receives its motion from
the ordinary low shaft 23 of the loom by wheels 24 & 25, see Fig. 3. The healds
are connected at their top side to a bowl 26, the straps 27, 28, 29, 30, passing
over the pulleys 31 & 32, & these are attached to pulley 33, see Fig. 2. The
bowl 26 is connected to the before mentioned bowl 22 and is mounted on the
same stud 34, and thus they both work in unison. The four tappits 5, 6, 7, 8,
are designed 8 to the round namely 3 up, 1 down, 1 up, 3 down, and are shown
in Figs. 1, 2, 3, imparting a lift to the healds of 3 up, 1 down, the tappit 19
which is designed 8 to the round namely 1 up, 1 down, 1 up, 1 down, 1 up,
1 down, 1 up, 1 down, is then at its active position and the bowl 22 is drawn
forward and as its diameter is twice that of the bowl 26 half the healds, namely 2,
are drawn up, it will also be seen that one heald is allowed to rise by reason of
one being held down and thus the motion of 3 up 1 down is rendered positive.
On the next operation the motion imparted from the tappits to the healds
allows 1 up 3 down, at this time the tappit 19, does not operate the lever 20
and the bowl 22 recedes and thus half the healds namely two, are allowed to fall
and as one heald is held up by reason of one being held down the movement of
1 up 3 down is rendered positive.
We show in Figs 1 & 2, the arrangement by which the healds are brought
level when necessary. The stud 34, carrying the bowls 22 & 26, is mounted
in a stand 35 and the latter is mounted loosely on a stud 36. The stand 35 is
connected by rod 37 to one arm of the lever 38 and when the other arm is raised
the stand 35 is brought forward and thus the healds are levelled.

page_text: In this case the tappits are arranged to impart the following lifts to the
healds 3 up 1 down 1 up 3 down, 3 up 1 down 1 up 3 down, 3 up 1 down, 1 up
3 down, 3 up 1 down, 1 up down, and as already explained each operation is
rendered positive. This is one arrangement but any other may be arranged on
the same principle.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed, we declare that what
we claim is :-
1st. The let-off or warp tension mechanism for weaving lappit goods as des-
cribed & for the purpose specified.
2nd. The manner of rendering positive the movement of the healds as specified.
Dated this 24th day of February 1899.
RICHD. L. HATTERSLEY,
SIMEON JACKSON.
Applicants.