Improvements in the Jacquard Mechanism of Looms for Weaving.
Year: 1890

page_text: Date of Application, 13th Aug., 1890
Complete Specification Left, 12th May, 1891-Accepted, 13th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in the Jacquard Mechanism of Looms for Weaving.
We, IRVIN SUTCLIFFE LODGE, of Bath Mills, Huddersfield, in the County of
York, Manufacturer, and GEORGE LITTLEWOOD of the same place, Loom Tuner,
do hereby declare the nature of this invention to be as follows:-
This invention has reference to the jacquard mechanism attached to the
"Hollingworth and Knowles " loom in which jacquard the vibrating levers,
common to this loom, are operated by a pattern chain consisting of a series of bowls
and tubes working on horizontal bars or pins specially employed to place certain
toothed discs into gear with one or other of two revolving toothed barrels for
operating the shed and shuttle boxes.
In practice it is found that there is a great deal of wear and tear in the pattern
chain, the continuously revolving motion wearing away the bosses on each side of
the bowls, as well as each end of the short tubes, allowing considerable lateral or
sidewise movement of these parts, and, as the vibrating levers are arranged close
together it sometimes happens that the lateral movement of one bowl would
cause two vibrating levers to be operated instead of one, consequently a faulty
piece is thereby woven.
Now the object of our invention is to dispense with this form of pattern chain
and use instead thereof an ordinary form of peg-lag, but as they could not act (like
the lifting bowls) direct on the underside of the vibrating levers, we use intermediate
mechanism between the peg-lags and the vibrating levers, consisting of weighted
bell crank levers, the number of which corresponds to the number of vibrating
levers. These bell crank levers are suspended loosely on a cross shaft and they
are kept in their position laterally by a grate so as to maintain a true position
under each vibrator bar which rest upon the upper ends of the bell crank
levers.
When the bell crank levers are in their normal position and not in use, the
vibrator levers are down with their toothed discs in gear with the lower toothed
barrel, but when a change is required, a peg on the lags comes into contact with a
bell crank lever in such a manner as to swing it on its axis and place a catch
thereon into position to be caught hold of by a lifting bar, which, on its next
upward movement, raises the bell crank lever, together with the vibrator bar
resting thereon so as to transfer the disc from the lower barrel into the upper
barrel whereby the necessary change is made.
The lifting bar rests upon a suitable shaped lever which is operated at the
proper time by a cam driven by spur wheels from the ordinary barrel cylinder, a
spiral or other form of spring being employed to operate the lifting lever in the
reverse direction.
By dispensing with the pattern chain and using the peg-lags and intermediate
nechanism herein mentioned, the wrong vibrating lever cannot now be operated,
the time occupied in changing the bowls and tubes is avoided, wear and tear
considerably reduced, and the breaking of a strong set screw employed to fasten the
chain cylinder on its shaft is also prevented.
1111
£1900
TASKER & CROSSLEY,
Market Place, Huddersfield, Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in the Jacquard Mechanism of Looms for Weaving.
We, IRVIN SUTCLIFFE LODGE, of Bath Mills, Huddersfield, in the County of
York, Manufacturer, and GEORGE LITTLEWOOD, of the same place, Loom Tuner,
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 has reference to the jacquard mechanism attached to the
Hollingworth and Knowles loom, in which jacquard the vibrating levers common
to this loom are operated by a pattern chain consisting of a series of bowls and
tubes, working on horizontal bars or pins, specially employed to place certain
toothed discs into gear with one or other of two revolving toothed barrels for
operating the shed and shuttle boxes. In practice it is found that there is a great
deal of wear and tear in the pattern chain, the continuously revolving motion
wearing away the bosses on each side of the bowls as well as each end of the short
tubes, allowing considerable lateral or sidewise movement of these parts and as the
vibrating levers are arranged close together, it often happens that the lateral
movement of one bowl would cause two vibrating levers to be operated instead of
one, consequently a faulty piece is thereby woven.
The object of our invention is to dispense with this form of pattern chain and
use instead thereof an ordinary form of peg lags, but as they could not act (like the
lifting bowls) direct on the underside of the vibrating levers, we use intermediate
mechanism between the peg lags and the vibrating levers, consisting of weighted
bell crank levers, the number of which corresponds to the number of the vibrating
levers. These bell crank levers are suspended loosely on a cross shaft, and they
are kept in their position laterally by a grate, so as to maintain a true position
under each of the vibrator bars, which are resting upon the upper end of the bell
crank levers. When the bell crank levers are in their normal position, and not in
use, the vibrator levers are down with their toothed discs in gear with the lower
toothed barrel but when a change is required, a peg on the lags comes into
contact with a bell crank lever in such a manner as to swing it on its axis and place
a catch thereon into position to be caught hold of by a lifting bar which on its next
upward movement raises the bell crank lever together with the vibrator bar resting
thercon so as to transfer the toothed dises from the lower barrel into the upper
barrel, whereby the necessary change is made.
Such being the nature and object of our said invention, we will now proceed to
describe the same with reference to the annexed sheets of drawings, wherein
Fig. 1 is sectional elevation of such parts of the jacquard mechanism of a loom as
are necessary to shew the application thereto of our invention, and in this drawing
the toothed disce A is shewn as being in gear with the lower revolving toothed
barrel B; whilst
Fig. 2 is a corresponding drawing to Fig. 1 except that in this case the parts
have been "pegged" and the toothed disc A has been raised from the lower barrel
into the upper toothed barrel C. For the sake of clearness, most of the framework
of the jacquard is removed, only a portion D remaining.
Figs. 3 and 4 are views on a larger scale.
The toothed barrels B and C have imparted to them a continuous and opposite
revolving motion in the direction of the arrows marked thereon, and they are
employed to operate the toothed discs as they are from time to time placed into
gear with them for the purpose of opening and closing the "shed" or for raising and
lowering the shuttle boxes. Each toothed disc A is attached to and carried by the
vibrating levers E, and hitherto they have been selected and lifted by a bowl or
small pulley carried by an endless chain, such said bowls acting underneath levers E
at the point marked a. According to our invention we dispense with the chain of

page_text: bowls and tubes, and use instead thereof a set of slotted levers F placed loosely on
the cross shaft G, such levers being weighted at so as to cause them to hang in a
vertical position when they are not "pegged." Each vibrating lever E rests upon one
of the slotted levers, and when the latter has not been pegged, a catch c formed at
the back of each lever F is clear of the upward motion of the griffe or lifting
bar H, in which case the toothed disc remains in gear with the lower toothed
barrel B, but when a peg I in the lags J is presented to the swinging lever F it is
pushed forward as shewn in Fig. 2, so that on the next upward movement of the
griffe or lifting bar H. the lever F is raised (the slot d therein permitting this to be
done) taking with it the vibrating lever E and toothed disc A, whereby the latter
is transferred from the lower toothed barrel B into the upper one C, consequently
the rotary motion of the toothed disc is reversed, and the jack lever K operated
accordingly, but when a peg I is absent, the weight causes the lever F to assume
a vertical position so as to carry the catch c beyond reach of the lifting bar H, and
this takes place at each revolution of the crank shaft of the loom.
The lifting
bar H rests upon two bell crank form of levers L, being kept thereon by spiral
spring e, and it is made to lift at the proper time by means of a cam M acting upon
a bowl at one end of the bell crank lever L, a spiral spring N being employed to
draw the bell crank lever and lifting bar down when the cam releases its hold of the
bowl f.
It must be understood that the lifting bar H not only raises the toothed
discs, but the said bar H holds the discs A in gear with the toothed barrel until the
former is rotated. In order that the levers F may keep clear of each other, and
maintain a true position under each vibrating lever E, I place the levers F in a
grate 0,-
- see plan view Fig. 5, where it will be seen that each lever is lying
between the prongs of the grate O. The pegging cylinder P, which carries the
lags J, is made to revolve intermittently by means of pinion wheels and spur
gearing, as shewn in Fig. 6 (on Sheet 1) where R is the driver, being fixed on
the shaft S of the lower toothed barrel B, but we do not limit or confine
ourselves to this manner of driving the pegging cylinder, as other means may be
employed.
By dispensing with the pattern chain and using the peg lags and intermediate
mechanism herein shewn and described, the wrong vibrating lever cannot be
operated; the time occupied in changing the bowls and tubes is saved wear and
tear considerably reduced, and the breaking of a strong set screw employed to
fasten the chain cylinder on its shaft is also prevented; whilst in addition, the cost
of lags is considerably less than the cost of pattern chains and bowls previously
employed.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
Firstly. In a loom jacquard having toothed discs carried by vibrating levers
operated by revolving toothed barrels, the combination therewith of the free and
loosely hanging levers F selected and operated by peg lags for purposes herein
described.
Secondly. In a loom jacquard having toothed discs carried by vibrating levers
operated by revolving tootlied barrels, the combination therewith of the free and
loosely hanging levers F selected by peg lags, the former being raised by the
upward motion of the griffe or lifting bar H, in manner and for purposes
described.
TASKER & CROSSLEY,
Huddersfield and Halifax, Agents.