An Improved Mechanism for Operating Shuttle Boxes in Looms for Weaving.
Year: 1895

page_text: Date of Application, 21st Mar., 1895
Complete Specification Left, 19th Dec., 1895-Accepted, 14th Mar.,.1896
PROVISIONAL SPECIFICATION.
An Improved Mechanism for Operating Shuttle Boxes in Looms
for Weaving.
I, EDWARD HOLLINGWORTH, of the Firm of Hutchinson, Hollingworth and
Company, Limited, of Dobcross, in the County of York, Power Loom Makers,
do hereby declare the nature of this invention to be as follows:-
This invention relates to looms for weaving, and refers to that class of loom
where the shuttle boxes are arranged two to one or four to one, that is to say, to
a loon having say two or four movable shuttle boxes at one end of the slay, and
one stationary shuttle box at the other end of the slay.
The object of my invention is to provide an improved arrangement of mechanism
for operating the said shuttle boxes, such mechanism being controlled by peg lags
or pattern chains.
In carrying out my invention I employ certain hinged indicator levers connected
to or operated by peg lags or pattern chain. On the low shaft of the loom, or on
any other suitable position, fix two revolving cams made to operate (when
selected by the indicator levers) one or other of two hinged fingers causing a
segment lever to oscillate in a slot formed therein in a backward and forward
direction. This slotted segment lever is provided with cog teeth in which gears
a pinion so that as the segment oscillates backward and forward, an intermittent
rotary motion is imparted to the said pinion. The intermittent motion of the
pinion imparts a like motion to a disc provided with a crank pin which by means
of a connecting rod imparts motion to a bell crank lever, the opposite end of such
lever being connected to the shuttle box lifting rod for raising and lowering the
boxes. The cams previously referred to, together with the segment lever ensures
that the motion of the boxes is positive both in their upward and downward
movement.
ليوم
1
1005
EDWARD HOLLINGWORTH.
Tasker & Crossley,
Huddersfield, Patent Agents.
COMPLETE SPECIFICATION.
An Improved Mechanism for Operating Shuttle Boxes in Looms
for Weaving.
I, EDWARD HOLLINGWORTH, of the Firin of Hutchinson, Hollingworth and
Company, Limited, of Dobcross, in the County of York, Power Loom Makers,
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 relates to looms for weaving, and refers to that class of loom
where the shuttle boxes are arranged two to one or four to one, that is to say, to a
loom having say, two or four movable shuttle boxes at one end of the slay, and
one stationary shuttle box at the other end of the slay.

page_text: The object of my invention is to provide an improved arrangement of mechanisin
for operating the said shuttle boxes, such mechanism being controlled by peg lags
or pattern chains.
have shewn in the drawings my improvements in box operating mechanism
detached from the rest of the loom.
Referring to the drawings
:―
Fig. 1 is a side view of my improved box motion.
Fig. 2 corresponds to Fig. 1, but shews the parts of the mechanism in the
opposite position, and
Fig. 3 is an edge view of the parts shewn in Fig. 1, looking in the direction of
arrow a, same figure.
In the accompanying drawing, 1 is a frame or stand, adapted to be bolted to
the lower side of the loom, at the rear right hand end thereof, and near the tappet
or bottom shaft. 2 is the said tappet or bottom shaft, journalled in bearings in
the ordinary way, not shewn, and 3 is a two leaf cam fast on the bottom shaft,
4 is an indicator lever hung on a stud 5 fast in the frame 1, aud 6 is a connector
attached at one end to said indicator lever 4, and connected at its other end with
the box pattern chain indicator, not shewn.
A slotted two-winged cam 7 is pivoted at its lower end on a stud 8 fast in the
frame 1, the said arm being provided at its upper end with gear teeth 71. The
cam arm 7 has an opening 711 therein, through which the bottom or driver shaft 2
extends, and it is also provided with two oppositely extending arms 7111. On a pin 9
fast in the outer end of one arm 7111 is pivoted a cam finger 10, provided with an
outwardly extending pin 10, adapted to be engaged by the indicator lever 4.
A second cam finger 11 is pivoted on a pin 12 fast in the outer end of the other
arm 7 of the cam 7, and is provided with an outwardly extending pin 11', which
is adapted to be engaged by the outer end of the indicator lever 4.
The cam finger 10 is provided at its free end with a boss or roll 13, adapted to
be engaged by the leaf cam 31 of the two leaf cam 3, and the free end of the cain
finger 11 is provided with a boss or roll 14, adapted to be engaged by the leaf 3"
of said cam 3.
A pin 15 on the arm 7111 of the cam arm 7, limits the downward motion of the
cam finger 10, and a pin 15' limits the upward motion of said finger.
A pin 16 on the other arm 7111 of the cam lever 7, limits the upward motion of
the cam finger 11, and a pin 16' limits the downward motion of said finger.
The gear teeth 71, on the upper end of the cam arm 7, gear with and drive a
pinion 17, loose on a stud 18 fast in the upper part of the frame 1.
Attached to, or made integral with the pinion 17 is a crank disc 19, and upon
the opposite side of said pinion 17 is, in this instance, a disc 20, provided with a
friction device consisting of two armis 21, pivoted at one end on a pin 22 on the
frame, and provided with curved portions at their other ends, which encircle the
disc 20, and are pressed thereon to produce friction by a bolt 23, extending
through holes in said arms 21, and provided with a spring 24 lying between the
upper side of the upper arm 21, and the nut 25 on said bolt. By screwing up or
down the nut 25, the friction of the arms 21 on the disc 20 may be adjusted as
desired, which friction prevents the disc 20 returning to its starting point, if the
loom should start before said disc completes its motion.
A connecting arm 26 is pivoted at one end on a crank pin 27 on the crank
disc 19, and its other end is pivoted to the upper end of the bell crank lever 28,
which lever is hung on a pin 29 in the frame 1. To the other end of the bell
crank lever 28 is pivoted a connector 30, the lower end of which is adjustably
secured, by a bolt 31, in the head 32 to the box lifter rod 33.
'
From the above description in connection with the drawings, the operation of the
box motion, or box operating mechanism, will be readily understood by those
skilled in the art.
In Fig. 1 the box lifter rod 33 is shewn in its upper position, and therefore the
bottom cell of the shuttle box not shewn, is ready to receive, or discharge the

page_text: shuttle. To lower the lifting rod, so that the top cell of the box will assume
the position occupied by the bottom cell, the operation is as follows:-
The leaf 31 of the cam 3, fast on the bottom shaft 2, revolves in the direction of
the arrow, Fig. 1, toward the cam finger 10, while said finger having been lowered
by the indicator lever 4, through the connector 6, into the position shewn in Fig. 1,
will be in the path of said leaf 31 of the cam 3, which will come in contact with
the boss or roll 10' on the end of said cam finger, causing the cam arm 7, through
said cam finger 10 to move in the same direction as the cam 3 moves, as indicated
by the arrow, Fig. 1, and the teeth 71 on said arm 7 engaging the teeth of the
pinion 17, will cause said pinion to revolve, and also the crank disc 20, carrying
the pin 19, and through the connecting rod 26, attached to said crank pin, the bell
crank lever 28 will be moved, to lower the lifter rod 33, through connector 30,
into the position shewn in Fig. 2, and thus the top cell of the shuttle box will be
lowered.
The shuttle box will remain in this position until the indicator lever 4 is lifted,
through the connector 6, by a pattern chain indicator, and when said lever is so
lifted, the cam finger 10 through the engagement of the pin 10' thereon with said
indicator lever 4, will be lifted out of engagement with the cam 3, as shewn in
Fig. 2, and at the same time the other cam finger 11 will be lifted through the
engagement of the pin 11' therein with the indicator lever 4, and the boss or roll 14
on the end of said cam finger 11 will be in position to be engaged by the leaf 311
of the cam 3, as shewn in Fig. 2, and the revolution of said cam will cause the
cam arm 7 to swing over into the opposite position from that shewn in Fig. 2, to
that shewn in Fig. 1, thus raising the lifter rod and also the lower cell of the
shuttle box, and returning it to its first position shewn in Fig. 1.
•
The advantages of my improvement in box motion, or box operating mechanism
for looms, will be readily appreciated by those skilled in the art.
It is of very simple construction and operation, and will not get out of order,
and at the extremity of each movement of the cam arm 7, said arm passing by its
pivot centre, will be locked or held in its position.
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 the shuttle box motion of a loom, the combination with the box
lifter rod 33, a connector to the bell crank lever 28, and a connector therefrom to
a crank disc 19, and a pinion fast to the disc, of mechanism for operating said
pinion to communicate motion to the box lifter rod, consisting of a two-winged
cam lever arm 7, provided with teeth gearing with said pinion, and having two
side extensions, each extension carrying a cam finger 10 and 11 pivoted thereon,
and an indicator lever 4 adapted to act on said fingers to move one into engagement
with, and the other out of engagement with its operating cam, for the purpose
stated, substantially as shewn and described.
Secondly. In the shuttle box motion of a loom, mechanism for communicating
motion to the bell crank lever 28 of the box operating mechanism, consisting of a
two-winged cam lever provided with teeth at one end adapted to engage and drive
a pinion, and a crank disc connected therewith, together with a connecting rod from
said crank disc to the bell crank lever, such said two-winged cam lever being also
provided with two cam fingers pivoted thereon, adapted to be moved into and out
of engagement with operating cams by an indicator lever, substantially as shewn
and described.
Dated this 18th day of December 1895.
TASKER & CROSSLEY,
Huddersfield, Patent Agents.