Improvements connected with the Dobby or Jacquard of Looms for Regulating and Controlling the Action of the Shuttle Boxes.
Year: 1895

page_text: Date of Application, 16th Aug., 1895
Complete Specification Left, 16th May, 1896-Accepted, 4th July, 1896
PROVISIONAL SPECIFICATION.
Improvements connected with the Dobby or Jacquard of Looms for
Regulating and Controlling the Action of the Shuttle Boxes.
I, EDWARD HOLLINGWORTH, of the Firm of Hutchinson, Hollingworth and
Company, Limited, of Dobcross Iron Works, in the County of York, Loom
Manufacturers, do hereby declare the nature of this invention (which invention
has been communicated to me by George Frank Hutchins, residing at Allam
Street, Worcester, in the United States of America, Machine Maker) to be as
follows:-
This invention has reference to the dobby or jacquard of a loom for regulating
and controlling the position of the shuttle boxes. My invention consists in the
addition of an auxiliary dobby for multiplying the pattern chain and thereby
reducing the main pattern chain.
In carrying out my invention, in addition to the stud carrying the ordinary
pattern chain, I employ another stud carrying its own cylinder and pattern chain.
The pattern chain in the Hollingworth and Knowles loom to which this inven
tion more particularly refers, is composed of studs and bowls and links, the bowls
being employed for lifting levers which control the shuttle boxes and upon these
studs there rests certain weighted levers and there are also employed indicator
levers and lock levers provided with convex portions adapted to fit into concave
portion in a stop wheel fastened to a pattern chain cylinder and on the stud of the
ordinary pattern chain cylinder there is loosely mounted a ratchet wheel, through
which wheel the pattern chain cylinder is operated.
There are two sets of lock levers connected together by a spiral spring which
draws the lock levers together for holding them in contact with their respective
stop wheels.
In the lower part of the framework there is loosely mounted a rock shaft having
secured on it at one end, the lower end of a vertical arm which carries at its upper
end two oppositely extending pawls one of such pawls is adapted to engage with
the teeth of a ratchet wheel on the main pattern chain cylinder, whilst the other
pawl is made to engage with the teeth of a ratchet wheel on the auxiliary pattern
cylinder. On the other end of the rock shaft there is fastened a horizontal arm
and there is provided a lock connection between the said arm and the driving part
of the loom from which the said arm is operated, and I provide means, preferably
connected with the stop motion shaft, to automatically operate the said lock
connection, to disconnect the said horizontal arm so as to immediately stop the
movement of the pattern surfaces in case the weft gives way and the weft stop
motion shaft acts to stop the loom.
The outer end of the arm is provided with a pin adapted to engage with a notch
in the slotted head of a connecting rod. The lower end of this rod is connected
with a cam on the bottom or other convenient driving shaft of the loom from which
a continuously up and down motion is obtained, which motion is communicated to
the rock shaft and to the pawls.
From the slotted head of the connecting rod, a chain passes over a pulley loose
on the rock shaft and also connected to an arm fast on the stop motion shaft of the
loom, so that when the loom is stopped by the stop motion shaft when the weft

page_text: gives out, the said chain will be pulled and cause the pin in the horizontal arm to
move out of the notch in the slotted head, to allow the said head and connecting
rod to move up and down without moving the said arm so that the pattern chain
will be instantly stopped though the loom may continue to run. A pawl pivotted
on the horizontal arm and bearing at one end against the inner side of the slotted
head and attached at its other end to a spring acts to hold the pin in the notch of
the slotted head so as to form a lock connection between the connecting rod and
the arm.
I may provide the rocking shaft with a friction device to prevent the arm
dropping and carrying the pin into the bottom of the slot in the slotted head when
the pin is drawn into the slot. This friction device consists in two clamping arms
pivotted on a pin and provided with circular portions adapted to encircle a pulley
or hub fast on the rock shaft.
These clamped arms are held together to clamp the said pulley or hub by a pin
fastened at its upper end in the upper clamping arm and extending loosely through
the lower arm and encircled by a spring the action of which is regulated by a
thumb nut on the end of the said pin.
In order to regulate the operation of the ratchet wheels on the main pattern cylinder
and also on the auxiliary pattern chain cylinder, I provide a pawl-guard or shield
for each pawl to keep the same out of engagement with its ratchet wheel when
desired. For the pawl which operates the ratchet wheel on the main pattern chain
cylinder, I provide a pawl-guard or shield pivotted at about its central point on a
pin in such a position that the end which acts as a guard for the pawl will extend
under the end of the said pawl, the other end of the said shield being connected by
a pin to a boss extending out from the free end of the weighted indicator lever of the
auxiliary pattern chain. The pawl-guard or switch to regulate the pawl which
operates the ratchet wheel on the auxiliary pattern chain cylinder is pivotted at
about its central point on a pin the outer end of which acts as a shield for the
pawl adapted to extend under the outer end of said pawl.
The inner end of said pawl-guard is connected by a pin with a boss which
extends out from the free end of the weighted indicator lever on the main pattern
chain. When the parts are in a normal position and the loom running, a tube on
the main pattern chain will come under the weighted indicator lever when the said
lever would remain down and hold the pawl shield up so as to prevent another pawl
from engaging the ratchet wheel to turn the auxiliary pattern chain, a roll or bowl
on the said auxiliary pattern chain being under the weighted indicator lever and
will therefore hold said lever up and keep the end of the pawl-guard down so as
to permit the other pawl to engage with the ratchet and thus turn the main pattern
chain. The next turn of the main pattern chain will bring a bowl under the
weighted indicator lever which will raise the said lever and at the same time lower
the end of the pawl shield connected with said lever so that on the return movement
of the arm, the pawl thereof will engage with the ratchet wheel and move the
auxiliary pattern chain so as to bring a tube under the weighted indicator lever
connected therewith causing said lever to drop and at the same time to raise the
end of the pawl-guard connected with said lever so that on the return movement of
the arm, the pawl will be held out of engagement with the ratchet wheel thus
leaving the main pattern chain at rest as long as the multiplier chain runs and a
tube comes under the indicator lever.
As soon as a bowl comes under the latter named lever the same is raised and the
pawl-guard drops whereupon the main pattern chain is operated as above described
and so the operation continues.
Dated this 15th day of August 1895.
EDWARD HOLLINGWORTH,
Dobcross Loom Works, Dobcross, Yorkshire.

page_text: Improvements connected with the Dobby or Jacquard of Looms for
Regulating and Controlling the Action of the Shuttle Boxes.
1, EDWARD HOLLINGWORTH, of the Firm of Hutchinson, Hollingworth and
Company, Limited, of Dobcross Iron Works, in the County of York, Loom
Manufacturers, do hereby declare the nature of this invention (which invention has
been communicated to me by George Frank Hutchins, residing at Allam Street,
Worcester, in the United States of America, Machine Maker) 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 dobby or jacquard of a loom for regulating
and controlling the position of the shuttle boxes.
My invention consists in the addition of an auxiliary dobby for multiplying the
pattern chain and thereby reducing the main pattern chain.
I have shewn in the drawings a drop box pattern indicating mechanism of my
improved construction for a two by one box loom, that is, a loom having two
movable shuttle boxes at one end of the lay, and one stationary shuttle box at the
other end, but it will be understood that the saine may be used on a four by one
box loom by adding another indicator lever on the main pattern chain, and by
adding two indicator levers, the same may be used on a six by one box loom.
Referring to the drawings :-
Fig. 1 is a plan view of a two box pattern indicating mechanism of the description
referred to embodying my improvements, looking in the direction of arrow a,
Fig. 2.
Fig. 2 is a front view taken on line 2, 2, Fig. 1, looking in the direction of
arrow b, same figure.
Fig. 3 is a vertical section taken on line 3, 3, Fig. 1, looking in the direction of
arrow, same figure, and,
Fig. 4 is a rear view, looking in the direction of arrow d, Fig. 1.
In the accompanying drawings, 1 is a stand or frame, which is bolted at its lower
end to the loom frame, preferably at the top of the loom.
Upon the frame 1 are supported the several parts of the pattern.indicating
mechanism. Upon a stud 2 secured in the upper part of the frame 1 and extending out
therefrom, is mounted the main pattern chain cylinder 3, carrying the pattern chain 4,
made up of links 5, which connect bars 6, on which are mounted bowls 7 and
tubes 7 in the ordinary way. The pattern chain cylinder 3 is provided with a
hard wheel 8 also in the ordinary way, by which said cylinder is turned as
desired.
Upon another stud 9 fast in the upper part of the frame 1 and extending out
therefrom, is loosely mounted the auxiliary or multiplier pattern chain cylinder 10,
carrying the auxiliary or multiplier pattern chain 11, made of links 5, bars 6,
rolls 7, and tubes 7' similar to the main pattern chain 4. The multiplier chain
cylinder 10 is provided with a hand wheel 12, to turn the same as desired.
Secured in the upper end of the frame 1, on the outside of the stud 2, is a stud 13,
on the outer end of which is pivoted one end of the shuttle box indicator lever 14,
which is operated by the main pattern chain 4, and to the outer ends of said
indicater lever 14 is pivoted the upper ends of the link 16 of the connector
rod 17, leading to the vibrator lever of the box motion, not shewn, which may be
of any ordinary construction and operation, and arranged at the lower part of
the loom.
Upon the stud 13 is also pivoted one end of the weighted indicator lever 18, and
oue end of the lock lever 19, which is provided with a convex portion 191 adapted
to extend into concave portions 20 in the stop wheel 20, fast to the pattern chain

page_text: cylinder 3, see Fig. 3. On the stud 2 and next to the frame 1, is loosely mounted
a ratchet wheel 21, which is secured to the pattern chain cylinder 3, and through
said ratchet wheel said pattern chain cylinder is operated.
On a stud 22, fast in the opposite end of the frame 1 from the stud 13, is pivoted
one end of a weighted indicator lever 23, which is acted on by the auxiliary or
multiplier pattern chain 11.
On the stud 22 is also pivoted one end of the lock lever 24, provided with a
convex portion 24, adapted to extend into concave portions 25¹ in the stop
wheel 25 loose on the stud 9, and secured to the auxiliary pattern chain cylinder 10.
The lower end of the lock lever 24 is secured to the lower end of the lock lever 19
by a spring 26, see Fig. 3, which acts to move said levers toward each other, and
hold them in engagement with their respective stop wheels 20 and 25.
A ratchet wheel 27 is mounted loosely on the stud 9, and is attachet to the
auxiliary pattern chain cylinder 10, and through said ratchet wheel 27, motion is
communicated to the auxiliary pattern chain cylinder 10.
The lock levers 19 and 24 in connection with the stop wheels 20 and 25, serve to
hold the pattern cylinders after each partial rotation thereof.
I will now describe the mechanism for operating the ratchet wheel 21 to
communicate motion to the main pattern chain 4, and for operating the ratchet
wheel 27, to communicate motion to the auxiliary pattern chain 11.
In the lower part of the frame 1 is loosely mounted in a suitable bearing, a rock
shaft 28, having secured thereon, at one end thereof, the lower end of the pawl
arm 29, which carries at its upper end two oppositely extending pawls 30 and 31
pivoted thereon.
The pawl 30 is adapted to engage the teeth of the ratchet
wheel 21, of the main pattern chain cylinder 3, and the pawl 31 is adapted to
engage the teeth of the ratchet wheel 27 of the auxiliary pattern chain cylinder 10.
On the other end of the rock shaft 28 is fast the inner end of the arm 32. I
provide a lock connection intermediate the arm 32, and the driven part of, the
loom, from which said arm is operated, and provide means preferably connected
with the stop motion shaft, to automatically operate said lock connection, to dis-
connect the arm 32 and immediately stop the movement of the pattern surfaces
in case the filling gives out, and the filling stop motion shaft acts to stop the
loom.
In this instance the outer end of the arm 32 is provided with a pin 33, which is
adapted to engage a notch 34 in the slotted head 34 of the connector rod 35.
The lower end of said rod 35 is connected with a cam on the bottom shaft or with
some other driven part of the loom, from which a continuous up and down motion
is communicated to said rod 35, and through the arm 32 motion is communicated
to the rock shaft 28 and the pawl arın 29.
From the head 34 of the connector rod 35, a chain 36 leads over a pulley 37,
loose on the shaft 28, to an arm fast on the stop motion shaft of the loom, not
shewn, so that when the loom is stopped by the stop motion shaft of ordinary
construction (in case the filling gives out) the chain 36 will be pulled, and
cause the pin 33 on the arm 32 to move out of the notch 34' and into the
longitudinal slot 3411 in the head 34, to allow the head 34 and connector rod 35
to move up and down without moving the arm 32; so that the pattern chain
will be instantly stopped though the loom may continue to run. A pawl 38 pivoted
at 38 on the arin 32, and bearing at one end against the inner edge of the head 34,
and attached at its other end to one end of a spring 39, acts to hold the pin 33 in
the notch 34' in the head 34 to form a lock connection between the connector
rod 35 and the arm 32.
I may provide the rock shaft 28 with a friction device to prevent the arm 32
dropping down, and carrying the pin 33 into the bottom of the slot 34" in the
head 34 when the pin 33 is drawn into said slot. Said friction device consists
in this instance of two clamping arms 47 and 48, pivoted on a pin 49, and
provided with circular portions 47 and 48¹, adapted to encircle a pulley or hub 49¹
fast on the shaft 28. Said clamping arms 47 and 48 are held together, to

page_text: clamp said pulley or hub 49 by a pin 50 fast at its upper end in the arm 47 and
extending loosely through the arm 48, and encircled by a spring 51, the action
of which is regulated by the thumb uut 52 on the end of said pin 50.
In order to regulate the operation of the ratchet wheels 21 and 27 of the main
pattern chain cylinder 3, and the auxiliary pattern chain cylinder 10 by the
pawls 30 and 31, I provide a pawl guard or shield for each pawl to keep the
same out of engagement with its ratchet wheel when desired. For the pawl 30
which operates the ratchet wheel 21 of the main pattern chain cylinder 3, I
provide a pawl guard or shield 40, pivoted at about its central point on a pin 41
on the frame 1 in such a position that the end 40 which acts as the guard
for the pawl 30, will extend under the end of said pawl. The other end 40"
of said shield 40 is connected by a pin 42 to a boss 43 extending out from the
free end of the weighted indicator lever 23, of the auxiliary pattern chain 11.
The pawl guard or switch 44 for the pawl 31, which operates the ratchet
wheel 27 of the auxiliary pattern chain cylinder 10 is pivoted at about its
central point on a pin 451 on the frame 1, with its outer end 441, which acts as
a shield for the pawl 31, adapted to extend under the outer end of said pawl.
The inner end 44" of said pawl guard 44 is connected by a pin 42 with a boss 43,
which extends out from the free end of the weighted indicator lever 18 on the main
pattern chain 4.
From the above description in connection with the drawings, the operation of
my mechanism will be readily understood by those skilled in the art.
Supposing the parts to be in the position shewn in the drawings, and the loom
running, so long as a tube 7' on the main pattern chain 4 comes under the weighted
indicator lever 18, said lever will remain down, and hold the pawl shield 44 up,
as shewn in Fig. 3 to prevent the pawl 31 on the arm 29 from engaging the
ratchet wheel 27 to turn the auxiliary pattern chain 11; a bowl 7 on said auxiliary
pattern chain 11 being under the weighted indicator lever 23, see Fig. 2, will hold
said lever up, and keep the end 40' of the pawl guard 40 down, as shewn in Fig. 3,
so that the pawl 30 will engage with the ratchet 21, and turn the main pattern
chain 4. The next turn of the main pattern chain 4 shewn in the drawings, will
bring a bowl or roll 7 under the weighted indicator lever 18, which will raise said
lever and at the same time lower the end 44' of the pawl shield 44 connected with
said lever 18, so that on the return movement of the arm 29, the pawl 31 will
engage with the ratchet wheel 27, and move the auxiliary pattern chain 11 to bring
a tube 7' under the weighted indicator lever 23, see Fig. 2, which will cause said
lever to drop down and at the same time raise the end 40' of the pawl guard 40
connected with said lever 23 so that on the return movement of the arm 29, the
pawl 30 will be held out of engagement with the ratchet 21, thus leaving the
main pattern chain 4 at rest as long as the multiplier chain 11 runs, and a tube
comes under the indicator lever 23; as soon as a roll comes under said lever 23,
the same is raised, and the pawl guard 40' dropped, and then the main pattern
chain 4 is operated as above described, and so the operation continues.
If at any time the filling runs out, the lock connection or joint between the
connector rod 35 and the arm 32 operates through the chain 36 attached to the
filling stop motion shaft to release the arm 32, and allow the pawl arm 29 to stop
instantly and also the pattern surfaces, even though the loom continues to run
through its momentum.
After the filling is replaced, the return movement of the filling stop motion
shaft will slacken the chain 36, and allow the spring actuated pawl 38 to act to
push out the head 34 and bring the pin 33 on the arm 32 into the notch 34 and
hold it there, to make a connection between said arm 32 and the head 34 of the
connector rod 35.
In case more than two boxes are used at one end of the loom, one or more
additional indicator levers similar to lever 14 are added to the main pattern
chain 4, and said levers connected with the box motion mechanism by connectors
similar to connector 17.

page_text: The advantages of my improvements will be readily appreciated by those skilled
in the art. By arranging the main pattern chain, and the auxiliary or multiplier
pattern chain alongside of each other and on separate studs or shafts, each
provided with a hand wheel, I am enabled to turn either chain independently of
the other for any purpose.
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 :-
:-
Firstly. In a loom provided with a main pattern chain, and an auxiliary or
multiplier pattern chain arranged alongside of each other on two separate studs,
each stud provided with a hand wheel, and adapted to be turned to move each
chain independently of the other, the combination with the main pattern chain,
the pattern chain cylinder, and the ratchet wheel connected with said cylinder,
and the multiplier pattern chain, pattern chain cylinder, and the ratchet wheel
connected with said cylinder, of means for operating the main pattern chain, and
the multiplier pattern chain, said means consisting of a swinging arm carrying two
pawls thereon, one adapted to engage and operate the ratchet wheel connected
with the main pattern chain cylinder, and the other adapted to engage and operate
the ratchet wheel connected with the multiplier pattern chain cylinder, and a
pawl shield to prevent the pawl from operating the main pattern chain, said
shield connected with and operated by the indicator lover on the multiplier pattern
chain, and said indicator lever, and a pawl shield to prevent the pawl from operating
the multiplier pattern chain, said shield connected with and operated by the
indicator lever on the main pattern chain, and said indicator lever, substantially as
set forth.
Secondly. In a loom provided with a main pattern chain, and an auxiliary or
multiplier pattern chain arranged alongside of each other on two separate studs,
each stud provided with a hand wheel, and adapted to be turned to move either
chain independently of the cther, the combination with the main pattern chain,
the pattern chain cylinder, the stop wheel, lock lever, and ratchet wheel connected
with said cylinder, and the multiplier pattern chain, pattern chain cylinder, stop
wheel, lock lever, and ratchet wheel connected with said cylinder, of means for
operating the main pattern chain, and the multiplier pattern chain, said means
consisting of a swinging arm carrying two pawls thereon, one adapted to engage
and operate the ratchet wheel connected with the main pattern chain cylinder, and
the other adapted to engage and operate the ratchet wheel connected with the
multiplier pattern chain cylinder, and a pawl shield to prevent the pawl from
operating the main pattern chain, said shield connected with and operated by the
indicator lever on the multiplier pattern chain, and said indicator lever, and a
pawl shield to prevent the pawl from operating the multiplier pattern chain, said
shield connected with and operated by the indicator lever on the main pattern
chain, and said indicator lever, substantially as set forth.
Thirdly. In a loom provided with a main pattern chain, and a multiplier pattern
chain arranged alongside of each other on two separate studs, each stud provided
with a hand wheel, and adapted to be turned to move either chain independently
of the other, means for operating the pattern chains consisting a swinging arm
carrying thereon two pawls, one adapted to engage the ratchet wheel connected
with the main pattern chain cylinder, and said ratchet wheel and cylinder, and the
other pawl adapted to engage the ratchet wheel connected with the multiplier
pattern chain cylinder, and said ratchet wheel and cylinder, and means for
communicating motion to said swinging arm from some driven part of the loom, in
combination with a lock joint or give way connection intermediate said swinging
arm, and said driven part of the loom, for the purpose stated substantially as
set forth.
Fourthly. In a loom provided with a main pattern chain, and a multiplier pattern
chain, the combination with a swinging arm carrying two pawls thereon, one pawl

page_text: adapted to engage a ratchet wheel connected with the main pattern chain cylinder,
and said ratchet wheel and cylinder, and the other pawl adapted to engage a
ratchet wheel connected with the multiplier pattern chain cylinder, and said
ratchet wheel and cylinder, of a vertically moving rod adapted to communicate
motion to said swinging arm through an intermediate connection, and a lock
connection for said rod, and means for disconnecting said rod, to automatically
stop the motion of said swinging arm, for the purposes stated, substantially as
set forth.
Fifthly. In a loom provided with a main pattern chain, and a multiplier pattern
chain, the combination with a swinging arm carrying two pawls thereon, one pawl
adapted to engage a ratchet wheel connected with the main pattern chain cylinder,
and said ratchet wheel and cylinder, and the other pawl adapted to engage a
ratchet wheel connected with the multiplier pattern chain cylinder, and said
ratchet wheel and cylinder, of a vertically moving rod, to communicate motion to
said swinging arm, and a lock connection for said rod, and means for disconnecting
said rod to automatically stop the motion of said swinging arm, said means
consisting of a connection from said rod to the stop motion shaft of the loom, so
that the operation of said stop motion shaft to stop the loom will disconnect said
rod, substantially as set forth.
Dated this 15th day of May 1896
TASKER & CROSSLEY,
Halifax, Patent Agents.