Improvements wive. ooms.
Year: 1896

page_text: Improvements
wive.
ooms.
We, JAMES MELVEN, Managing Director of the Broomward Weaving
Company, Limited, of West Street, Calton, in the City of Glasgow, and JULIUS
DITTRICH, Mechanical Engineer with said Company, do hereby declare the
nature of this invention to be as follows:-
This invention which relates to power looms for producing loom sewed fabrics
has for its object the provision of improved means for actuating the operating
mechanism of the swivel and swivel frame by which the figuring of the fabric
is produced.
In front of the reed cap of the loom is mounted a swivel frame or bar in front
of which is placed a bar in which a series of bobbin carriers work, the carriers.
being operated so as to pass beneath the raised warp threads of the fabric in
forming sprigs, flowers or figures thereon. The arrangement of the swivel frame
and bobbin carriers is similar to that well-known as applied to hand looms, but the
reciprocating rack instead of being actuated by hand is operated automatically
through the intervention of devices brought into acting position by the Jacquard or
other pattern mechanism.
On the reed cap of the loom a swivel frame is carried, in front of which is
movably connected a bar in which work a series of bobbin carriers of any known
pattern. The swivel frame is carried on the reed cap in such a manner as to allow
a lateral or sideward movement of the swivel frame, and the bar is carried on the
swivel frame in such a manner as to allow it a vertical movement between guides
secured on the swivel frame.
When the swivelling is to be performed the bar is automatically lowered so that
the bobbin carriers may be passed beneath the selected threads of the warp. This
is effected by the action of a hook pivoted on the loom frame and brought by the
action of the pattern mechanism into the path of a double ended or bell crank
lever pivoted on the sword of the loom, which lever is turned about its centre at
this time by the action of the book upon it, on the backward movement of the
sword. The other end of the double ended or bell crank lever is connected by a
cord, wire or other means to one of the two bell cranks pivoted on the swivel
frame. These bell cranks which are connected together by a link work synchro-
nously and lower the swivel frame at the proper moment against the action of
a spring secured between the end of the cord and the swivel frame.
One end of the swivel frame is fitted with a bearing which carries the spindle
of a lever. This lever is fitted with a pin which is connected by means of a link:
to a rack which actuates the swivel, said pin being capable of adjustment to suit
the throw of the particular swivel employed. The stud of the lever which projects
through the bearing is fitted with a universal coupling and a telescoping rod or
flexible shaft to follow the varying position of the reed cap. The back end of the
telescopic rod is connected by means of a universal coupling to one end of a short
spindle or stud carried in a fixed bracket on the loom frame, said spindle having at
its other end a pinion gearing with a toothed segment centred on the fixed bracket.

page_text: This segment is formed with inclined slots in it, upon which a pivoted pendulum
or striker acts, to turn the segment alternately in one direction or another, and so,
by means of the toothed pinion, telescopic rod and rack to actuate the bobbin
carriers to carry these through beneath the raised threads of the warp of the
fabric. The pendulum or striker is pivoted on a bar sliding in guides on the fixed
bracket said bar being connected to a vertical rod attached by means of a link to
a lever centred on the loom frame and actuated at the proper moment by a wyper
on the wyper or cam shaft, to bring the bar down against the action of a spiral
spring surrounding the rod and with it the pendulum upon one or other of the
inclined slots in the toothed segment to tilt it in either direction. As an alternative
the sliding bar may be dispensed with, and the pendulum be pivoted to the vertical
rod. A flat spring fitted to enter a notch or shoulder on the sliding bar, or in a
notch or shoulder on the rod when the bar is dispensed with prevents the return of
the lever into the path of the wyper until the flat spring is released from the notch
or shoulder by a spring pawl, said pawl being actuated through a cord by the
Jacquard or other pattern mechanism of the loom. The pawl is so constructed
that it only acts momentarily upon the flat spring, thereafter allowing the latter to
return to its normal position while the pawl passes on as the jacquard continues its
work. The vertical rod attached by means of the link to the wyper operated
lever has a projection formed on it, which when the rod, and with it the sliding
bar, has been raised by the action of its spring, pressés against either side of a
roller centred on the toothed segment, and causes the segment to take such
a position as will ensure the pendulum entering the slot opposite to that from which
it has been-withdrawn, this projection also serving to lock the segment in position
when the pendulum has been withdrawn from either of the slots. A spring
secured on the fixed bracket acts upon the upper end of the pendulum when the
latter is withdrawn to prevent its vibration, and to place it in proper position for
entering the notch on the next downward stroke of the sliding bar. Thus the
pattern mechanism through the intervention of mechanism such as that described
brings the swivel frame devices into operation at the proper time. When the
telescopic rod is replaced by a flexible shaft, the shaft instead of being connected
in a straight line between the spindle on the swivel frame and the pinion stud on
the fixed bracket is brought round to the back of the bracket and connected in
this way to the piniou, so as to allow for the usual motion of the lathe of
the loom.
For the purpose of bodily traversing the frame carrying the bobbin carrier bar
and rack in order to effect what is known as embosoming or forming the figuring
in a zigzag fashion, the mechanism employed is the same as that already described,
excepting that the adjustable lever is carried in a bearing ou the reet cap, and is
connected to the swivel frame instead of to the rack as described with reference
to the swivelling mechanism.
During the ordinary or ground weaving the usual wypers which actuate the
shuttle frame levers or picking arms of the loom act alternately thereon so as to
throw the shuttle through the open shed, the positions of the wypers being
diametrically opposite each other on the wyper shaft, but when the sprig or figure
weaving is to be performed, it is necessary that the shuttle throwing levers should
throw in unison, that is to say, there should be one shot and one miss. To attain
this end automatically one of the wypers is loose on the wyper shaft and engages
with a clutch keyed thereon. The wyper is drawn out momentarily from its clutch
at the proper time and on the wyper shaft completing half a revolution it drops
into engagement with the clutch so that both wypers stand in the same position
relatively to the shaft, and act simultaneously on the picker arms. The action of
drawing the wyper out of engagement with the clutch may be effected by a fork
pivoted to the loom frame a hook or similar device attached to the fork being
brought into the path of a lever, actuated by a cam on the wyper shaft, by means
of a curd or wire attached to one of the heddles and thus to the dobbie, Jacquard
or other pattern mechanism. This latter lever acts on the hook and through it on

page_text: the fork to withdraw the cam from its clutch against which it is held by means of
a spring attached to the loom frame.
Dated this 20th day of May 1896..
WALLACE FAIRWEATHER,
Chartered Patent Agent,
62 St. Vincent Street, Glasgow, Agent for the Applicants.
Improvements in Swivel Looms.
We, JAMES MELVEN, Managing Director of the Broomward Weaving Company,
Limited, of West Street, Calton, in the City of Glasgow, and JULIUS DITTRICH,
Mechanical Engineer with said Company, 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 which relates to power looms for producing loom sewed fabrics
has for its object the provision of improved means for actuating the operating
mechanism of the swivel and swivel frame by which the figuring of the fabric is
produced.
In front of the reed cap of the loom is mounted a swivel frame or bar in front of
which is placed a bar in which a series of bobbin carriers work, the carriers being
operated so as to pass beneath the raised warp threads of the fabric in forming
sprigs, flowers or figures thereon. The arrangement of the swivel frame and
bobbin carriers is similar to that well-known as applied to hand looms, but the
reciprocating rack instead of being actuated by hand is operated automatically
through the intervention of devices brought into acting position by the Jacquard
or other pattern mechanism.
The invention is illustrated by the accompanying drawings, Figure 1 being a
transverse section and Figure 2 a front view of part of a loom shewing the improved
mechanism applied thereto, and Figures 3, 4, 5, 6, 7 and 8 are details of parts of
that mechanism.
On the reed cap A of the loom a swivel frame B is carried, in front of which is
movably connected a bar B1 in which work a series of bobbin carriers of any
known pattern. The swivel frame B is carried on the reed cap A in such a manner
as to allow a lateral or sideward movement of the swivel frame, and the bar B¹ is
carried on the swivel frame B in such a manner as to allow a vertical movement in
guiding slots B2 formed in the swivel frame B'.
When the swivelling is to be performed the bar B₁ is automatically lowered so
that the bobbin carriers may be passed beneath the selected warps. This is effected
by the action of a hook P pivoted on the loom frame and brought by the action of
the pattern mechanism into the path of a double ended or bell crank lever Q
pivoted on the sword R of the loom, which lever is turned about its centre S at
this time by the action of the hook P upon it, on the backward movement of the
sword. The other end of the double ended or bell crank lever Q is connected by
a cord, wire or other means to one of two hell cranks T pivoted on the swivel
frame B. These bell cranks being connected together by a link T work
synchronously and lower the swivel frame at the proper moment against the
action of a spring V secured between the end of the cord U and the swivel
frame B.
One end of the swivel frame B is fitted with a bearing C which carries the
spindle D of a lever E. This lever E is fitted with a piu F which is connected

page_text: by means of a link G to a rack H which actuates the swivels, said pin
being capable of adjustment to suit the throw of the particular swivel employed.
The stud D of the lever E which projects through the bearing C is fitted with a
universal coupling I and a telescoping rod J or flexible shaft to follow the
varying position of the reed cap. The back end of the telescopic rod is connected
by means of a universal coupling to one end of a short spindle or stud K carried
in a fixed bracket L on the loom frame, said spindle K having at its other end a
pinion K gearing with a toothed segment K2 centred at K³ on the fixed bracket.
This segment K2 is formed with inclined slots K in it, upon which a pivoted
pendulum or striker K' acts, as shewn particularly at Figure 3, to turn the segment
alternately in one direction or another, and so, by means of the toothed
pinion K, telescopic rod J and rack H to actuate the bobbin carriers to carry
these through beneath the raised warps of the fabric. The pendulum or striker K
is pivoted at K on a bar K' sliding in guides K on the fixed bracket L said bar
being connected to a vertica! rod K' attached by means of a link K10 to a lever K
centred on the loom frame and actuated at the proper moment by a wyper M on
the wyper or cam shaft N, to bring the bar down against the action of a spiral
spring K surrounding the rod K and with it the pendulum K upon one.or other
of the inclined slots K in the toothed segment K to tilt it in either direction.
As an alternative the sliding bar K' may be dispensed with, and the pendulum be
pivoted to the vertical rod K. A flat spring O fitted to enter a notch or shoulder
on the sliding bar K', or in a notch or shoulder on the rod K' when the bar is
dispensed with prevents the return of the lever K into the path of the wyper M
until the flat spring O is released from the notch or shoulder by a spring paw! O
shewn particularly at Figs. 3 and 4, said pawl being actuated through a cord O' by
the Jacquard or other pattern mechanism of the loom. The pawl O' is so con-
structed that it only acts momentarily upon the flat spring O, thereafter allowing
the latter to return to its normal position while the pawl passes on as shown at
Fig. 4 as the jacquard continues its work. The vertical rod K' attached by
means of the link K to the wyper operated lever K" has a projection K" formed
on it, which when the rod, and with it the sliding bar K7 has been raised by
the action of its spring K", presses against either side of a roller K" centred on the
toothed segment K2, and causes the segment to take such a position as will ensure the
pendulum K entering the slot opposite to that from which it has been withdrawn,
this projection also serving to lock the segment in position when the pendulum has
been withdrawn from either of the slots K. A spring K secured on the fixed
bracket L acts upon the upper end of the pendulum K when the latter is with-
drawn to prevent its vibration, and to place it in proper position for entering the
notch on the next downward stroke of the sliding bar K. Thus the pattern
mechanism through the intervention of mechanism such as that described brings
the swivel frame devices into operation at the proper time. When the telescopie
rod is replaced by a flexible shaft, the shaft instead of being connected in a straight
line between the spindles D and K is brought round to the back of the bracket L
and connected in this way to the pinion K₁, so as to allow for the usual motion of
the lathe of the loom.
For the purpose of bodily traversing the frame or bar B carrying the rack H
and bobbin carrier in order to effect what is known as embosoming or forming the
figuring in a zigzag fashion, the mechanism employed is the same as that already
described, excepting that the adjustable lever is carried in a bearing on the reed
cap, and is connected to the swivel frame B as shown at Fig. 2 instead of to the
rack as described with reference to the swivelling mechanism.
During the ordinary or ground weaving the usual wypers W which actuate the
shuttle frame levers or picking arms of the loom act alternately thereon so as to
throw the shuttle through the open shed, the positions of the wypers being
diametrically opposite each other on the wyper shaft as shewn at Figure 5, but
when the sprig or figure weaving is to be performed, it is necessary that the shuttle
throwing levers should throw in unison, that is to say, there should be one shot

page_text: and one miss. To attain this end automatically one of the wypers is loose on the
wyper shaft and engages with a clutch W' keyed thereon as shewn in Figs. 7 and 8.
This wyper W is drawn out momentarily from its clutch W₁ at the proper time by
a fork Z pivoted to the loom frame and acted on by the hook 1 attached to the
fork, said hook being brought down (by means of a cord attached to one of the
pedals and thus to the dobbie or jacquard) into the path of a lever 2 actuated by
a wyper W also on the wyper shaft. This lever 2 acts on the hook 1 and through
it on the fork Z to withdraw the wyper W from its clutch against which it is.
held by means of a spring 3 attached to the loom frame, and on the wyper shaft
completing half a revolution the wyper W drops into engagement with the
clutch Wi so that both wypers W act simultaneously on the picker arm, and
stand at the position indicated by Fig. 6.
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. In a swivel loom the combination of devices for actuating the swivel frame
and bobbin carriers under the control of Jacquard mechanism, substantially as
described.
2: In a swivel loom the combination with the swivel frame and devices for
actuating it of the telescoped universal coupling or flexible shaft for transmitting
movement to the frame, substantially as described.
3. In a swivel loom the combination of the pivoted segment or tumbler and
pendulum or striker operated by the loom and arranged to throw the segment
to either side alternately and thereby to transmit the requisite movements to the
swivel frame, substantially as described.
4. In a swivel loom the combination of devices for actuating the rack bar of
the swivel frame and bobbin carriers and like devices for laterally shifting said.
frame for embosoming the fabric, substantially as described.
DL: 001 dan of tahun 1807
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62 St. Vincent Street, Glasgow, Agent for the Applicants..