IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1882

page_text: LETTERS PATENT to James Hollingworth, Managing Director of the Firm of
Messrs. Hutchinson, Hollingworth, and Co., of Dobcross, in the County of
York, Woollen Loom Makers, for an Invention of "IMPROVEMENTS IN LOOMS
FOR WEAVING."
PROVISIONAL SPECIFICATION left by the said James Hollingworth at tho
Office of the Commissioners of Patents on the 13th February 1882.
JAMES HOLLINGWORTH Managing Director of the Firm of Messrs. Hutchinson
Hollingworth and Co. of Dobcross in the County of York Woollen Loom Makers.
"IMPROVEMENTS IN LOOMS FOR WEAVING."
My Invention relates
Firstly to a combination of mechanism for actuating the shuttle boxes and
supporting the same between the changes thereof.
Underneath the shuttle boxes I fix a perpendicular rod the lower end of which
rests upon one end of a lever which is mounted on a fulcrum fixed to the lower
part of the end frame of the loom and which lever is provided with two studs
placed at equal distances from the fulcrum.
This lever which constitutes the shuttle box lever is acted upon by two oblique
sets of hooks or catches which are suspended from a horizontal lever which rests
upon a cam on the crank shaft and by incans of the said cam the hooks or catches
have a rising and falling motion imparted to them at each revolution of the shaft,
a latteral or oscillatory motion being also imparted by rods and levers governed by
the indicating apparatus whenever a change in the shuttle boxes is requisite.
The lever supporting the hooks or catches is constructed in two parts connected
by a pin or stud the upper portion being a balance lever so adjusted and weighted
as to remain rigid under ordinary strain but capable of giving way in case
anything should interfere with the free working of the parts. As soon as a change
in the position of the boxes is effected they are supported by means of a catch lever
which is caused by a spring to engage with a stud fixed to the frame, the lever

page_text: being disengaged at the end of each forward movement of the slay by means of the
rod under the boxes.
Secondly. My Invention relates to the jacquard apparatus and my improvements
therein consist in operating the jack hooks by means of two horizontal levers
which are mounted upon studs placed at a short distance from each other so that
when nearest to each other the levers are about parallel, but form a gradually
increasing angle as they are separated. The knives or bars which engage with the
jack hooks being fixed to the levers those hooks which are situated further from
the studs upon which the levers are mounted have a greater extent of motion than
the nearer ones and as the healds are raised or lowered to a corresponding degree
a perfect V shed is formed. To each lever is also connected by rods a levelling bar
by means of which the "shed" is closed and the healds brought to their middle
position where the notches of the levers are clear of the knife or draw bars so as to
allow the pegs to operate freely, the upper draw bar being hinged for the purpose
of yielding to the movement of the jack levers.
The levers are opened and closed by means of a pinion which gears with two
toothed racks or segments one of which is attached to each lever, the pinion having
a rocking motion imparted to it by suitable lovers operated by a cam on the crank
shaft.
To the pinion is also attached a cam which through other levers imparts a rising
and falling motion to the peg cylinders one of which indicates the heald changes
and the other the shuttle box and packing changes. The rotary motion of the
cylinders is derived by means of star wheel and peg plato actuated by bevol
gearing from the crank shaft. The shaft carrying a portion of the bevel gearing
is continued downwards to the picking mechanism and there carries a cam capable
of sliding upon a feather on the said shaft. This cam by means of the indicating
apparatus can be caused to act upon one or other of a series of levers which are
connected to the picking "shoes" and place the same in position for being operated
upon by the picking tappets when required.
Thirdly. My Invention relates to improved means for causing the catch lever
to engage with the studs on the box lever. Hitherto a flat spring has been
employed for this purpose but instead thereof I employ a spiral spring attached to
a stud at the extreme end of the box lever, and also to a link or arm carrying a
friction bowl and hung from the box lever in such manner that the spring shall
cause the bowl to press upon the catch lever directly behind the catches thereon
by which arrangement the pressure is applied at the advantageous part and always
to the same extent.
Fourthly. My Invention relates to the arrangement of the levers and springs for
lifting the healds in plain looins and my improvements consists in the use of two
levers for each row of healds, the levers being mounted on studs in such manner
as to overlap each other in the middle of the loom the overlapping ends being
slotted and connected by means of a pin or stud fixed to one of the levers and
entering the slot of the other. By means of this pin joint I ensure and equal
extent of motion in lock levers and consequently a level motion of the heald. The
levers are moved in one direction by treading tappits and in the other by spiral
springs attached to the levers and to fixed rods and acting at right angles to the
said levers.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Hollingworth in the Great Seal Patent Office on the
12th August 1882.
JAMES HOLLINGWORTH Managing Director of the Firm of Messrs. Hutchinson,
Hollingworth and Co. Limited of Dobcross in the County of York Power Loom
Makers. "IMPROVEMENTS IN LOOMS FOR WEAVING."
My Invention relates
Firstly to a combination of mechanism for actuating the shuttle boxes and
supporting the same between the changes thereof. Underneath the shuttle boxes
I fix a perpendicular rod the lower end of which rests upon one end of a lever
which is mounted on a fulcrum fixed to the lower part of the end frame of the
loom and which lever is provided with two studs placed at equal distances from
the fulcrum. This lever which constitutes the shuttle box lever is acted upon by
two oblique sets of hooks or catches which are suspended from a horizontal lever
which rests upon a cam on the crank shaft and by means of the said cam the
books or catches have a rising and falling motion imparted to them at each
revolution of the shaft, a lateral or oscillatory motion being also imparted by rods
and levers governed by the indicating apparatus whenever a change in the shuttle
boxes is requisite. The lever supporting the hooks or catches is constructed in two
parts connected by a pin or stud the upper portion being a balance lever so
adjusted and weighted as to remain rigid under ordinary strain but capable of
giving way in case anything should interfere with the free working of the parts.
As soon as a change in the position of the boxes is effected they are supported by
means of a catch lever which is caused by a spring to engage with a stud fixed to
the frame, the lever being disengaged at the end of each forward movement of the
slay by means of the rod under the boxes.
Secondly. My Invention relates to the jacquard apparatus and my improvements
therein consist in operating the jack hooks by means of two horizontal levers
which are mounted upon studs placed at a short distance from each other so that
when nearest to each other the levers are about parallel, but form a gradually
increasing angle as they are seperated. The knives or bars which engage with
the jack hooks being fixed to the levers, those hooks which are situated furthest
from the studs upon which the levers are mounted have a greater extent of motion
than the nearer ones and as the healds are raised or lowered to a corresponding
degree a perfect V shed is formed. To each lever is also connected, by rods, a
levelling bar by means of which the "shed" is closed and the healds brought to
their middle position where the notches of the levers are clear of the knife or
draw bars so as to allow the pegs to operate freely, the upper draw bar being
hinged for the purpose of yielding to the movements of the jack levers.
The levers are opened and closed by means of a pinion which gears with two
toothed racks or segments one of which is attached to each lever, the pinion having
a rocking motion imparted to it by suitable levers operated by a cam on the crank
shaft. To the pinion is also attached a cam which through other levers imparts a
rising and falling motion to the peg cylinders one of which indicates the heald
changes and the other the shuttle box and picking changes. The rotary motion
of the cylinders is derived by means of star wheels and peg plate actuated by
bevil gearing from the crank shaft. The shaft carrying a portion of the bevil
gearing is continued downwards to the picking mechanism and there carries a cam
capable of sliding upon a feather on the said shaft. This cam by means of the
indicating apparatus can be caused to act upon one or other of a series of levers

page_text: which are connected to the picking "shoes" and place the same in position for
being operated upon by the picking tappits when required.
Thirdly. My Invention relates to improved means for causing the catch lever to
engage with the studs on the box lever. Hitherto a flat spring has been employed
for this purpose but instead thereof I employ a spiral spring attached to a stud at
the extreme end of the box lever and also to a link or arm carrying a friction
bowl and hung from the box lever in such manner that the spring shall cause the
bowl to press upon the catch lever directly behind the catches thereon by which
arrangement the pressure is applied at the most advantageous part and always to
the same extent.
Fourthly. My Invention relates to the arrangement of the levers and springs for
lifting the healds in plain looms and my improvements consist in the use of two
levers for each row of healds, the levers being mounted on studs in such manner as
to overlap each other in the middle of the loom the overlapping ends being slotted
and connected by means of a pin or stud fixed to one of the levers and entering
the slot of the other. By means of this pin joint I ensure an equal extent of
motion in both levers and consequently a level motion of the heald. The levers
are moved in one direction by treading tappits and in the other by spiral springs
attached to the levers and to fixed rods and acting at right angles to the said
levers.
In order that my Invention may be more fully understood I herein give
reference to the accompanying Sheets of Drawings illustrative thereof. Fig 1 is
an end elevation of a loom and Fig 2 is a front elevation thereof and the two
views illustrate the first part of my Invention which relates to the mechanisin for
actuating the shuttle boxes and supporting them between the changes. 1 are the
shuttle boxes which when stationary are supported by rod 2 lever 3 and catch
lever 4. The rod 2 rests upon the end of the lever 3 which is hinged upon a
fulcrum 6 and the catches in the lever 4 hook upon a stud 7 fixed in the end
frame. At each beat up of the slay the rod 2 strikes against a finger & and
unhooks the catch lever the weight of the boxes being then transferred to the
oblique sets of catches 9 and 10 which are suspended from a lever 11 and have a
rising and falling motion imparted to them at each pick by means of a cam 12
fixed on the end of the crank shaft so bringing up one of each set of catches under
the studs 13 and 14. The catches 9 and 10 have a lateral oscillatory motion
imparted to them by the indicating apparatus acting through the rods 15 and 16
and bell crank lever 17. At each lateral motion of the catches the boxes are either
raised or lowered but when not moved laterally the catches support the boxes
during the time that the lever 4 is disengaged. The lever 11 is constructed in
two portions the lower portion 11" being mounted on a fulcrum 17 and provided
with a friction runner 18 which rests on the cain 12. The part 11 is connected to
the part 11a by a pin or stud 19 and acts as a balance lever, the short arm carrying
the catches and the longer arm a weight 20. Under ordinary circumstances the
two levers act as if rigidly connected together but in case anything should interfere
with the motion of the shuttle boxes the upper lever will move on its fulcrum 19
and so avoid any breakage.
The second part of my Invention which relates to the jacquard and picking
mechanism is illustrated partially in Figs 1 and 2 and in detail in Figs 3, 4, 5, 67
and 8. The improvements consist in operating the jack hooks by means of two
horizontal levers 21 and 22 which are shewn in plan view in Fig 3. The levers
therein being parallel to each other in which position the healds are level. The
levers are hinged upon studs 23. 24 and when moved they seperate with a
gradually increasing angle. The knives or draw bars which engage with the jack
hooks are attached to the levers the upper knife 25 being hinged (see detail Fig 8)
Each lever is
so as to yield to any irregularity of movement in the levers.
provided with a levelling bar 26 and 27 connected by rods 28, 29, 30, 31 by
means of which the shed can be closed and the healds levelled or brought to
their middle position. It will be seen that by this arrangement the further

page_text: the jack hooks are placed from the studs 23 and 24 the greater the extent of
motion imparted to them will be and this difference of motion being com-
municated to the healds a perfect V shed is the result. On the end of each lever
is formed a rack 32, 33, which gears with a bevil pinion 34 and an oscillatory
motion is imparted to this pinion by means of the cam 35 operating through the
levers and rods 36, 37 and 38 by means of which the levers 21 and 22 are opened
and closed. On the margin of the pinion is formed a cam 39 which acts on a
finger 40 keyed on the short shaft 41 and imparts a rocking motion to the said
shaft. On the same shaft is also keyed a bracket 42 which carries the two peg
cylinders 43 and 44 with their usual star wheels the former of which serves to
indicate the picking and shuttle box changes and the latter the heald changes.
As the shaft rocks the cylinders oscillate at the same time thus bringing the pegs into
contact with the jack hooks. The rotary motion of the cylinders is derived as
usual from a peg plate 45 which is revolved by the arrangement of reversible bevil
gearing 40 and 47. The bracket which carries the peg cylinders being mounted on
the same axis as the peg plate 45 the oscillatory motion does not interfere with
the action of the peg and star wheels.
My improvements in the picking mechanism consist in so mounting and actuating
the picking shafts that only one of them shall be in operation at the same time the
other one being inactive when not required to pick. For this purpose I carry the
shafts 48, 49. Figs 6 and 7 in blocks or footsteps 50, 51 which are capable of
sliding in beds 52, 53 fixed to the back rail of the loom. The shafts are supported
at the other end in brackets 54, 55 which are bored rather wide to allow the
shafts a little play. The blocks 50, 51 are attached by rods 56, 57 to levers
58, 59 either of which may be acted on by the cam 60 which works on a feather
on the shaft 61 revolving with the said shaft but rising and falling according to the
indications of the cylinder 43 the pegs in which act on a lever 62 to which is
attached a rod carrying a clutch fork 63 for moving the cam. As will be seen from
the Drawing the cam at each revolution places one or other of the picking shoes
64 or 65 under the tappits 66 the other shaft and shoe being removed or pulled out
of the way of the tappits by means of the spring 68.
The third part of my Invention which relates to a new method of causing the
catch lever to engage with the studs on the box lever is shewn in Figs 9 and 10.
A is the box lever which carries three or more studs B one of which rests on the
end of the upright catch lever C after each change of shuttle box. The catch lever
is removed from under the stud by means of the cam D and is caused to resume
its portion by means of the spring E which is attached at one end to a stud F and
at the other to a pin in the arm G which carries a bowl H. The spring draws the
bowl against the lever and whichever stud it is engaged with the amount of
pressure applied is the same.
The fourth part of my Invention is illustrated in Fig 11 wherein a represents the
top rail of the loom from which are suspended studs b carrying levers c and d. The
lever c is slotted at the end e and the lever d carries a pin f which enters the suid
slot. The healds are suspended from the links g and are operated in the downward
direction by treading tappits and raised by means of springs h. A handle and rod k
are provided for depressing or levelling the healds, and the various positions are
indicated by dotted lines.
Having thus described the nature of my Invention and shewn by Drawings how
the same is to be or may be performed or carried out I would have it understood
that I claim in connexion with the first part of my Invention
Firstly. The catch lever 4 for supporting the shuttle boxes between the changes
thereof.
Secondly. The combination of levers 11 and 11ª in manner and for the purpose
herein shewn and described.
In reference to the second part of my Invention I claim
Firstly. The combination of levers 21 and 22 with the levelling bars 26 and 27
operating in the manner herein shewn and described.

page_text: Secondly. The employment of sliding picking shafts and apparatus for actuating
the same substantially as herein shewn and described.
In respect to the third part of my Invention I claim the spring E arm Gand
bowl H operating in manner and for the purpose herein shewn and described.
Lastly. I claim the employment of the double levers c, d and levelling bar k in 5
the manner shewn and described under the fourth part of this Specification.
In witness whereof I the said James Hollingworth have hereunto set my
hand and seal this Eleventh day of August in the year of our Lord
One thousand, eight hundred and eighty two.
TAS. HOLLINGWORTH
Tol
1