IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1876

page_text: LETTERS PATENT to George Hodgson, of Thornton Road, Bradford, in the
County of York, Machine Maker, and James Broadley and Jolin Lister, both of
the said Bradford, and in the employment of the said George Hodgson, for the
Invention of "IMPROVEMENTS IN LOOMS FOR WEAVING."
Sealed the 21st October 1870, and dated the 31st July 1876.
PROVISIONAL SPECIFICATION left by the said George Hodgson, James
Broadley, and John Lister at the Office of the Commissioners of Patents on
the 31st July 1876.
GEORGE HODGSON, of Thornton Road, Bradford, in the County of York, Machine
Maker, and JAMES BROADLEY and JOHN LISTER, both of the said Bradford, and in
the employment of the said George Hodgson. " IMPROVEMENTS IN LOOMS FOR
WEAVING."
The object of the Invention is to obtain increased facilities in effecting changes of
shuttles when using rotary or shifting shuttle boxes.
According to one arrangement, on the axle of the shuttle chambers or other axle
for giving motion to them we apply a toothed wheel operated by chain or band, or
by gear from another larger wheel on another axle or shaft, on which or a shaft in
connection therewith we apply a stud or peg wheel capable of being operated for
motion in either direction by toothed clawkers or drivers connected to a "broken-
backed" lever, and operated by pattern surface. The broken-backed lever is by a
pulley thercon operated by step cain or tappet, such step cam or tappet, or the
bowl acting therewith, being operated by leverage carried from the broken-backed
lover at or about its axis of motion, and operated by pattern surface, so as to move
the cam or tappet, or its bowl, into correct relative position for the extent of change
desired. The bowl, and consequently the boxes, are also steadied by corresponding
stop capable of adjustment. The squaring or holding motion is relieved or eased at
the time of changing boxes by being connected to a lever operated by incline.
According to another arrangement the lifting or broken-backed lever for operating
the catch rods connected to the levers actuating the boxes is provided with extra
pins or catches carried by sliding pieces, so that as one or other of these extra pins

page_text: or catches is brought into position to act on a catch rod or to be missed thereby in
the motion of the lifting lever, so will be the distance of movement effected to the
series of boxes. Springs withdraw these sliding pieces from operation, and they are
moved into operation by levers operated by pattern surface, or the reverse. These
or such like levers also act to bring suitable stops into action to stop the too free
motion of the catch rods. Other levers act in the usual way to bring the catch rods
into position for action.
By another arrangement the catch rods are each formed with notches or catches
overhanging one the other, and in number corresponding with the distance of move-
ment required. The notches or catches may be applied separately, so as to be
capable of being regulated as required. Either of these notches or catches is capable
of being brought into position to be operated upon by the lifting broken-back lever
by such catch levers being moved to the extent desired by lovers provided with
pins of varying lengths operated by the pattern surface. Steps forming stops, and
adjustable, act to control the motion of these catch rods, and consequently to steady
the boxes.
According to another arrangement, when using single motion arrangements we
obtain the variations in extent of motion by the use of cams or tappets of varying
rises to act on the broken-backed lever. This tappet or the bowl acting therewith
is slided by pattern surface for the correct relation of one with the other, according
to the extent of notion required.
By another arrangement we effect the selection of any one of a series of shuttle
chambers by the series of such chambers being connected by link or other suitable
means to one end of a lever, the other end or part of which is formed with radial
grooves or parts adapted to be acted upon by a projection, or part of a link, or con-
nection to a broken-back or such like lever, operated by tappet. This link or
connection is operated by pattern surface, so as to bring its projection or part
formed for the purpose opposite the desired radial groove or part for the next
selection.
In place of "broken-backed levers" other compound levers may be used.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Hodgson, James Broadley, and John Lister in the Great Seal
Patent Office on the 30th January 1877.
GEORGE HODGSON, of Thornton Road, Bradford, in the County of York, Machine
Maker, and JAMES BROADLEY and JOHN LISTER, both of the said Bradford, and in 3
the employment of the said George Hodgson.
"IMPROVEMENTS IN LOOMS FOR
WEAVING."
The object of the Invention is to obtain increased facilities in effecting changes of
shuttles when using rotary or shifting shuttle boxes.
According to one arrangement on the axle of the shuttle chambers or other axle 4
for giving motion to them we apply a toothed wheel operated by chain or band, or
by gear from another larger wheel on another axle or shaft, on which or a shaft in
connection therewith we apply a stud or peg wheel capable of being operated for
motion in either direction by toothed clawkers or drivers connected to a "broken-
backed" lever, and operated by pattern surface. The broken-backed lever is by a 4
pulley thereon operated by a stop cam or tappet, such step cam or tappet, or the
bowl acting therewith, being operated by leverage carried from the broken-backed
lever at or about its axis of motion, and operated by pattern surface, so as to move
the cam or tappet, or its bowl, into correct relative position for the extent of
change desired. The bowl, and consequently the boxes, are also steadied by corre- 5
sponding stop capable of adjustment. The squaring or holding motion is relieved

page_text: being shifted on to one or other of the different surfaces or rises of the tappet m
on the tappet shaft in order that the lever may be actuated the distance
required to give the desired extent of partial rotation to the wheel g, and thence to
the series of shuttle chambers c in one or other direction. This shifting of the
pulley to the required rise of the tappet m is effected by means of studs of
different lengths projecting from the lever n in position to be operated by card or
other pattern surface carried by or applied to the rising and lowering cylinder o.
This lever is supported to turn on the fixed stud n¹, whilst it is prevented from
falling too far by a slop n², and at n³ it is by pin joint connected to one end of the
rod n³, the other end of which is looped to the projecting arm n* of a lever n³,
which is supported to rock on the fixed stud n, and it is forked at its other end to
embrace tho slides of the pulloy in order to its being moved in the direction and
to the extent desired. If desired, in place of this bowl being shifted to the different
parts of the step can m, the step cam may be shifted to the bowl. The broken
backed lever is borne with its bowl to the tappet m by means of a spring /
acting on the projecting end of that lever k.
The use of these cams or tappets, with varying rises to act on the broken
backed or such like lever, is particularly applicable in the use of single motion
arrangements. indicates stops in steps to control the extent of motion of the
bowl as that is operated by its cam or tappet.
The toothed end of the clawker or driver i is, when required, lifted into position
to operate on the studs h¹ of the wheel h by a projection q¹ from the lifting rod q,
the upper end of which is by pin joint connected to the outer end of the lever
9" corresponding with the lever n, and which, like that lever n, is operated for its
lifting by the rising and falling cylinder o. The other clawker or driver j is
operated to bring it into position to act on the studs of the wheel / by another
lever operated in like manner by the cylinder o. The outer end of this lever
is by pin joint connected to the upper end of the rod, the lower end of which
is by pin joint connected to the weighted end of the lover, which lever is
supported to turn on the fixed axis, and at its outer end is formed with studs
acting as forks to embrace the driver or clawker j. The action of the cylinder o
or parts carried thereby on the lover is to bring the driver or clawker j into
position to act on the studs of the wheel h, and when that action is removed the
weighted end of the lever 3 tends to lift the driver or clawker j away from those
studs h¹.
The squaring or holding motion to the series of shuttle chambers c is relieved or
eased at the time of changing boxes in the following manner:-The lower end of
the guide pins to the squaring or holding motion is by pin joint connected to one
end of the lever 8', which is supported to turn on the fixed stud 82, and at its other
end is formed as an axis to carry the bowl 83, which as the batten with the series of
shuttle chambers comes forward to the front of the loom is acted upon by the
inclines formed on the upper inner edge of the plate 8*.
We will now proceed to describe the second part of our Invention.
Figure 3 shows by outline the end of a loom with this part of our improvements
applied thereto.
Figure 4 shows part separately. In this case, as in other cases, the partial
rotation of the series of shuttle chambers in either direction is effected by the action
of one or the other of the rack rods t, u, as the rack teeth at the upper end of
these rods are brought into position for that purpose. The lower end of both the
rack rods t and u are by pin joint t connected to one end of the lever v, which is
supported to rock ou a stationary pin v¹, and at its other end is by pin joint ª
connected to the lower ends of the catch rod w, the upper end of each of which
is formed with a catch wl, which is capable of being brought into position to
be acted upon for lifting by one or other of the pins 1, 2, or 3. The pin 1 is
affixed directly into the lifting or broken-backed lever a, but the pins 2 and 3 are
carried by separate sliding pieces y and z, each of which is supported to move

page_text: end wise in bearings a³ carried by the broken-backed lever . These sliding pieces y
and z are also acted upon by springs with a tendency to cause them to move out-
wards in the way of the catches w¹, and they are moved inwards out of the way of
those catches, according to the selection desired, by being acted upon by the lower
end of one or the other of a pair of levers A, which are supported to turn on the
fixed stud A, and at their outer ends are by pin projection or otherwise capable of
being acted upon by jacquard or pattern surface for the desired selection.
levers A also act by the lever B to bring stops C into action to stop the too free
motion of the catch rods w. D, D, are levers for operating as selected by the
jacquard or pattern surface employed for bringing one or the other of the rack rods
t, u, into operation.
These
In Figure 5 is shown a modification of the above with the upper end w¹ of the
catch rods w formed to overhang, and with several notches 2, 3, 4, therein, either of
which may be caught by a pin 1 carried by the lever a, according to the distance of
motion given to the upper ends of those catches by the lovers A.
We will now describe the third part of our Invention, one arrangement of which
is shown by Figure 6. This part of the Invention is shown applied to when a pair
of oscillating shuttle chambers is used, C, C, indicating the two chambers, and C¹
the axis of motion on which they rock. This axis is carried by the parts of the
batten in the usual way, and the object is to facilitate the bringing of either shuttle
box into a line with the race of the batten. On the axis C¹ is affixed the arm D,
the outer end of which is by pin joint D¹ connected to one end of the connecting
rod E, the other end of which is connected by the adjustable stud E² to one end or
arm of the lever F which is supported to rock on the fixed stud F1, and at the
other end is formed with radial grooves or parts F2 formed so that either of them
may receive and be operated on by a projection G¹ standing out from the side of
the rod G, which rod has a to-and-fro motion given to it by being connected by pin
joint G to the lower end of the broken-backed or other suitable lever H. The
rod G is guided in its to-and-fro motion by passing through the guide I, and it is
lifted so as to bring its stud C into a line with the inner end of the upper of the
radial grooves E2 by means of a stud J¹ affixed with capability of adjustment to
the rod J, which is suspended from a lever K operated by the jacquard cylinder L,
or by other suitable means.
Figure 7 shows a modification of this last part of the Invention, in which the
stud G is applied to one end of the lever F and the radial grooves Es, or other
similarly acting surfaces are applied to the rod G.
When other number of shuttle chambers is employed a corresponding increase
in the number of radial grooves F or other equivalent controlling means will be
adopted.
Having thus described our Invention, and means which we adopt in carrying
the same into effect, we would have it understood that what we claim is,―-
First. The adaptation or combination of means for effecting changes of shuttles
in looms for weaving, whereby the extent and order of selection is controlled by
toothed clawkers operated by changeable motion, and acting on pin or such liko
wheels geared to the axle of the series of boxes or shuttle chambers, and controlled
by jacquard or pattern surface, substantially as described in respect of Figures 1
and 2.
Secondly. We claim the adaptation or combination of parts whereby variations_
in the extent of motions given to the shifting shuttle boxes used in looms for
weaving is obtained by means of studs or parts of sliding pieces carried by the
actuating lever, substantially as described in respect of Figures 3 and 4; also we
claim the method of obtaining facilities for such variation by the notches to the
catch rods being formed to overhang, so that either of such notches may, by the aid
of jacquard or pattern surface be brought into position to be operated by a stud
projection carried by the operating lever, substantially as described in respect of
Figure 5.

page_text: Thirdly. We claim the arranging or combining parts whereby variations in the
position of shifting shuttle boxes in looms for weaving is obtained, substantially as
described in respect of Figures 6 and 7.
In witness whereof, we, the said George Hodgson, James Broadley, and John
Lister, have hereunto set our hands and seals, this Twenty-seventh day of
January, in the year of our Lord One thousand eight hundred and seventy-
BAVAR
GEORGE HODGSON. (L.S.)
JAMES BROADLEY.
(Ls.)
JOHN LISTER.
(L.S.)