Improvements in Looms for Weaving.
Year: 1897

page_text: Date of Application, 23rd Feb.,
1897
PROVISIONAL SPECIFICATION.
Improvements in Looms for Weaving.
I, HENRY BERNOULLI BARLOW, of the firm of H. B. Barlow and Gillett, of
17 St. Ann's Square, Manchester, in the County of Lancaster, Registered Patent
Agents, do hereby declare the nature of this Invention, which has been com-
municated to me by John Franklin Dustin, Loom Fixer, and the Parkhill
Manufacturing Company, a Company organized under the laws of the State of
Massachusetts, Manufacturers, both of Circle Street, Fitchburg, in the County of
Worcester, State of Massachusetts, and United States of America, to be as
follows:
The object of this invention is to combine the pattern device which controls
the warp threads of a loom with the pattern device which controls the weft or
filling threads, so that said pattern devices will move together, that is to say, if
one pattern device is advanced or moved back, the other pattern device will be
correspondingly shifted:
A further object of this invention is to provide a simple, compact and efficient
box motion operating device for looms.
In its preferred form, a loom constructed according to this invention comprises
a dobbey cylinder, a pattern chain mounted thereon for controlling the harness
motion of the loom, and a pattern chain also mounted on said dobbey cylinder, and
connected to control the box motion.
Extending down and operated by the second pattern chain are a plurality of
lifting wires, which control the position of hook-pieces which form part of the box
motion actuating device.
are
The box motion actuating device comprises toggle-joints, which
connected to lifting levers arranged to actuate lifting rods or links, which
extend down in position to be connected to the box motion of a loom or to any
of the ordinary multiplying mechanisms now commonly used in connection there-
with.
The hook pieces which extend from the toggle-joints have abutments adapted to
co-operate with actuating blades or sweeps, one of which is arranged to recipro-
cate above the hook-pieces, and the other of which is arranged to reciprocate
beneath said hook-pieces.
When a hook-piece is raised by means of a lifting wire, before referred to, its
upper abutment will be brought into the path of the upper operating blade or
sweep so that when said sweep is shifted, it will catch the hook-piece, and throw
up one of the lifting levers, raising one of the lifting rods.
The toggle levers are preferably arranged to slightly pass their centre of
motion to engage with a stop, so that the lifting rod will be locked in its raised
position until the hook-piece is lowered to bring its lower abutment into the path
of the lower operating blade, which will then push the hook-pieces back, and
lower the lifting rod.

page_text: In the ordinary forms of dobbey looms which are now employed, the pattern
device or chain for controlling the warp threads is mounted independently of the
pattern device or chain connected to control the weft threads, and either of said
pattern devices or chains can be shifted without producing a corresponding
motion of the other chain.
The correct weaving or production of a pattern in a textile fabric depends
upon the joint action of the pattern device controlling the warp threads with the
pattern device controlling the weft threads.
If a loom of ordinary construction should be started up when the pattern
devices are not in correct co-operative relation, the correct pattern would not
be woven.
The especial advantage of a loom constructed according to this invention resides
in the fact that the pattern devices are mounted to move together so that they will
always be maintained in correct co-operative relation, and will always be in
position to correctly weave the desired pattern.
1
1000
H. B. BARLOW & GILLETT,
Agents for Applicants.
I, HENRY BERNOULLI BARLOW, of the firm of H. B. Barlow and Gillett, of
17 St. Ann's Square, Manchester, in the County of Lancaster, Registered Patent
Agents, do hereby declare the nature of this Invention; which has been com-
municated to me by John Franklin Dustin, Loom Fixer, and the Parkhill
Manufacturing Company, a Company organized under the laws of the State of
Massachusetts, Manufacturers, both of Circle Street, Fitchburg, in the County of
Worcester, State of Massachusetts, and United States of America, and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:
The object of this invention is to combine in a loom the pattern-device which
controls the warp threads with the pattern-device which controls the weft or filling
threads, so that said pattern-devices will move together, that is to say, if one
pattern-device is advanced or moved back, the other pattern-device will be
correspondingly shifted.
A further object of this invention is to provide a simple, compact and efficient
box-motion operating device for looms.
In its preferred form, a loom constructed according to this invention comprises
a dobbey-cylinder, a pattern-chain mounted thereon for controlling the harnesses
of the loom, and a pattern-chain also turning with said dobbey-cylinder and
connected to control the box-motion.
Extending down from and operated by the second pattern-chain are a plurality of
lifting wires, which control the position of hook-pieces forming part of the box-
motion operating device.
The box-motion operating device preferably comprises toggle-joints, which are
connected to the lifting levers arranged to actuate lifting-rods or links which
extend down in position to be connected to the box-motion of the loom, or to any
of the ordinary multiplying mechanisms now commonly used in connection there-
with.
In a modified form of the box-motion operating device, the lifting levers are
actuated by cam-pieces having slots or grooves cut therein.

page_text: The hook-pieces which extend from the toggle-joints or cam-pieces, as the
case may be, have abutments adapted to co-operate with actuating blades or
sweeps, one of which is arranged to reciprocate above the hook-pieces, and the
other of which is arranged to reciprocate beneath said hook-picces.
When a hook-piece is raised by means of a lifting-wire before referred to, its
upper abutment will be brought into the path of the upper operating blade or
sweep, so that, when said sweep is shifted, the toggle-levers or cam-piece, as the
case may be, will be shifted to actuate one of the lifting levers.
When toggle levers are employed, they are preferably arranged to slightly
pass their centres of motion to engage a stop, so that the lifting lever will be
locked in its raised position until the corresponding hook-piece is lowered to
bring its lower abutment into the path of the lower operating-blade, which will
then push the hook-piece back to lower the lifting lever.
When cam-pieces are employed, the cams or slots formed therein are preferably
formed so as to also lock the lifting levers in their raised position.
In the accompanying four sheets of drawings,
Fig. 1 is an end view of a loom, sufficient parts thereof being shown to illustrate
the application of this invention.
Figs. 2 and 3 are detail views illustrating a slightly modified form of con-
struction.
Fig. 4 is a detail, sectional view to be hereinafter referred to.
Fig. 5 is a perspective view illustrating the relative position of the hook-pieces
and the operating blades or sweeps.
Figs. 6 to 10 inclusive are diagrammatic views illustrating the operation of
the device.
Fig. 11 is a front view of a box-motion operating device constructed according
to my invention.
Fig. 12 is a similar view showing a slightly modified form of construction, and
Fig. 13 is a fragmentary view showing the parts in a different relative position.
The ordinary forms of dobbey-looms now usually employed in cotton-weaving
embody two distinct pattern-mechanisms.
One pattern-mechanism, through a harness-motion, controls the position of the
warp-threads, and the other pattern-mechanism is arranged to control the box-
motion which governs the weft or filling threads.
.These two pattern-mechanisms which control the warp-threads and the weft
or filling-threads respectively have heretofore ordinarily been independently
mounted so that either of them could be advanced or turned back without affecting
the other.
The pattern which is produced in a fabric woven by a loom depends upon the
joint action of the two pattern mechanisms, which control the warp-threads and
weft-threads respectively.
In ordinary constructions, it has heretofore been necessary for the operator or
weaver to independently adjust the two pattern mechanisms, and to bring them
into proper relation with each other before starting up the loom after the same
has been stopped for any reason.
For example, in the ordinary forms of gingham or fancy looms, the warps are
controlled by means of a dobbey-cylinder and chain, and the box-motion thereof
is controlled by an independent pattern chain located at some distance from the
dobbey, and which can be turned back or shifted without affecting the dobbey.
When a loom is stopped, for example, by the weft stop-motion, upon the
exhaustion of a shuttle-bobbin, it is now the practice for the weaver to turn back
the dobbey-cylinder one peg, and then, by an independent operation, to turn
back one peg on the pattern-chain which controls the box-motion.
A new shuttle can then be introduced and the loom again started in operation.
If, however, it should happen that the dobbey-cylinder should be turned back
ne peg while the pattern-chain which controls the box-motion should be perhaps
rned back two pegs, or not turned at all, and the loom should then be started

page_text: up, it would result in the entire confusion of the pattern which is being produced
by the loom.
The especial object of my invention is, therefore, to provide a box-motion
operating attachment, which can be applied to the ordinary dobbey-looms now
employed in cotton weaving, so that the pattern-chain or mechanisms which
control the weft-threads, and the pattern-chain or mechanisms which control
the warp threads will move together, so that, when one pattern device or chain is
advanced or turned back, the other chain will be correspondingly shifted.
Referring to the drawings and in detail, A designates one of the side-frames
of a loom, which may be of any ordinary or approved construction.
Journalled in the side-frames A is one of the power-shafts b, having a pinion c,
which meshes with and drives a gear d secured upon a shaft e journalled in
said side-frames.
The gear & forms a crank-disk, which, by means of a pitman f, is connected
to operate the levellers controlling the harness-motion.
Mounted on the shaft e is a bevel-gear g, which meshes with and drives a
bevel-gear h, secured upon a vertical shaft i, which shaft i may be provided
with a worm meshing with and driving a worm-wheel j, which worm-wheel j is
connected to the dobbey-cylinder / by means of a spring-clutch k.
The spring-clutch allows the dobbey-cylinder to be turned by the ban l-
wheel m independently of its driving connections.
The parts thus far referred to may be of any ordinary or approved construction,
and need not be herein described at length.
Mounted on the dobbey-cylinder is a main pattern-chain n, which controls the
harness-motion of the loom in the ordinary manner.
Also mounted on the dobbey-cylinder 1, near the inner end thereof is a second
pattern device or chain 10, which pattern-chain is employed for controlling the
box-motion actuating device.
As illustrated, the pattern-chain 10 co-operates with a plurality of fingers 16,
in this instance three such fingers 10 being illustrated.
The fingers 16 are connected by means of lifting-wires 11 to the hook-pieces 13,
which are mounted in and form part of the box-motion operating mechanism 12.
In the construction of new looms embodying this invention, the dobbey-
cylinder may be made wide enough to co-operate with three additional fingers 10.
In applying this form of construction to existing looms which employ dobbey-
cylinders simply wide enough to co-operate with the number of fingers necessary
to operate the harnesses thereof, three of the fingers 16 will have to be dis-
connected from the harnesses, and such harnesses thrown out of
use, if the pattern-
chain is made to run directly upon the dobbey cylinder.
In some cases, therefore, it is desirable to provide a distinct cylinder for the
pattern-chain which controls the box-motion, and such a construction is illus-
trated in Figs. 2 and 3.
As shown in these figures, a supplemental cylinder 101 which is cored out
so as not to interfere with the spring on the dobbey-cylinder shaft may be
secured in place by a set-screw, as shown, and a chain 100 for the box-motion
may be trained thereover to co-operate with the fingers 160.
As shown most clearly in Fig. 3, the fingers 160 may be bent or offset so as
to bring their rear ends into position to co-operate with the lifting-wires 11.
Bolted upon the face of the leveller-operating crank-disk or gear dis a
face-cam 14 by means of which power will be applied to the box-motion operating
device 12.
The construction of the preferred form of box-motion operating device is shown
most clearly in Fig. 11.
As illustrated therein, it comprises a frame-work or bracket 17, which may be
bolted or secured to any convenient part of the frame-work of the loom.
Mounted in the bracket 17 are toggle-joints formed by the links 18, which
toggle-joints are connected to operate lifting-levers 19.

page_text: Secured upon the ends of the lifting-levers 19 are connecting pieces 20, adjustably
threaded into which is a lifting-rod 15.
As shown most clearly in Fig. 1, the lifting-rods 15 extend down to that part
of the frame-work of the loom ordinarily occupied by the box-motion, and said
lifting-rods may be connected at their lower ends either directly to operate the
box-motion or to any preferred form of multiplying device now ordinarily
employed in connection with such box-motions.
Extending from the bracket or frame 17, as shown in Fig. 11, are stops 21
and 22 for limiting the motion of the toggle-levers 18.
The stop 22 is preferably located so that the toggle-joints may be thrown
slightly past their centres of motion, as illustrated in Figs. 7 to 9, so that, when
the toggle-levers are in this position, they will be locked in a raised position.
The hook-pieces 13, which are connected to the toggle-joints, are provided on
their upper edges with abutments 24, and on their lower edges with abutments 25.
Near their outer ends, the hook-pieces pass through suitable slots in a guide
piece or comb 23.
Arranged to co-operate with the abutments 24 and 25 respectively are actuating
blades or sweeps 26 and 27.
The actuating blades or sweeps 26 and 27 are carried by bell-crank levers 28
and 29, as most clearly illustrated in Fig. 5.
The lower arms of the bell-crank levers 28 and 29 are connected by means of a
pin 30 extending from the bell-crank lever 28 through a slot 31 in the bell-
crank lever 29.
A coiled spring 32 is connected at its lower end to the pin 30, and normally
acts to open or separate the actuating blades or sweeps 26, and to hold the bell-
crank levers 28 against a stop 33, as shown in Fig. 11.
Journalled in the bell-crank lever 29 in position to engage the face-cam 14,
before referred to, is a friction-roll 34.
When the cam 14 engages with and acts upon the friction-roll 34, the actuating
blades or sweeps 26 and 27 will be moved towards each other from their normal
position to that illustrated in Fig. 7.
The operation of a box-motion actuating device, as thus constructed, is most
clearly illustrated in Figs. 6 to 10 inclusive.
When a blank space on the pattern-chain 10 passes under one of the fingers 16,
as illustrated in Fig. 4, the hooks 16 will pull up a lifter-wire 11, and raise a
hook-piece 13 to the position illustrated in Fig. 6.
When the actuating blades or sweeps 26 and 27 are moved towards each other
by the action of the cam 14, the blade 26 will engage the upwardly extending
abutment of the lifter hook-piece 13, so that said hook-piece will be carried
forward, and the lifting lever 19 will be raised, as illustrated in Fig. 7.
The toggle formed by the toggle-links or levers 18 having been moved slightly
past its centre of motion, as illustrated, the parts will remain locked in this
position, as long as the hook-piece 13 is held up by its lifting-wire 11.
When the hook-piece 13 is lowered, as illustrated in Fig. 9, the abutment on
the lower side thereof will be brought into position to be engaged by the operating
blade 27, which will then act to restore the parts to their first position, as
illustrated in Fig. 10.
If, at any time, the loom is stopped on account of the giving out of a weft
thread, or for any other reason, the operator can turn back or advance the dobbey-
cylinder by means of the hand-wheel m, and the pattern chains n and 10 will be
moved together so that they will always maintain a correct co-operative relation,
and this is considered an especially important feature of the invention, as a
loom to which these attachments are applied is always in condition to be started,
so that at will weave a correct pattern.
In some cases, instead of employing toggle-joints for actuating the lifting-
levers, said parts may be actuated by means of cam-pieces.
Such a construction is illustrated in Figs. 12 and 13.

page_text: As shown in these figures, a series of cam-pieces 35 having cam-slots 36 are
mounted on a stud 40 secured in the bracket 17.
Fitting into the cam-slots 36 are rollers 38 journalled on links 37, which links
are connected at their upper ends to the lifting-levers 19.
The links 37 are guided at their lower ends by slotted sections 39 engaging.
the stud 40.
As shown most clearly in Fig. 13, the cam-slots 36 are shaped at their ends
so that, when the parts are in the position illustrated in Fig. 12, the lifting
levers 19 will be locked in a raised position.
By means of this construction, when a peg or riser on the pattern-chain 10
passes under one of the hooks 16, the hook 16, through its lifter-wire, will lower a
hook-piece 13 so as to bring its lower abutment 25 into the path of an actuating
blade or sweep 27.
When the actuating blade or sweep 27 is shifted by the cam 14, it will move
the hook-piece 13 to the position illustrated in Fig. 12, thus lifting up a lifting-
lever 19, which lifting-lever, ou account of the shape of the cam-slot 36, will
be locked in its raised position, that is to say, in a box-motion operating device,
as thus constructed, a riser or peg on the pattern-chain will cause one of the
lifting-levers to be raised, and a blank space on the pattern-chain will cause one
of the lifting-levers to be lowered.
This construction is desirable in practice, as the use thereof is not so liable to
cause mistakes to be made in making up the pattern-chains.
Moreover, by operating the lifting device by means of cams, a motion may be
provided in which the power can be applied uniformly to the lifting levers
during their entire movement.
Having thus fully described & ascertained the nature of this invention, and
in what manner the same is to be performed, I declare that what I claim is:-
1. The general combination and arrangement of parts embodying the improve-
ments in looms, substantially as described and illustrated in the accompanying
drawings.
2. Mounting the pattern devices of a loom to move together so that when one
pattern device is advanced or moved back, the other pattern device will be
correspondingly shifted, substantially as described.
3. The box-motion operating attachment for looms operating with toggle-levers,
substantially as described.
4. The box-motion operating attachment for looms operating with cam-pieces,
substantially as described.
Dated this 16th day of Navumban 1907
H. B. BARLOW & GILLETT,
Agents for Applicant, 17 St. Ann's Square, Manchester.