IMPROVEMENTS CONNECTED WITH THE RISING AND FALLING SHUTTLE BOXES OF LOOмs
Year: 1884

page_text: - We JAMES COWBURN Manager and CHRISTOPHER PECK Manufacturer both of
Silk Street Mill Eccles in the County of Lancaster do hereby declare the nature
of our invention for IMPROVEMENTS CONNECTED WITH THE RISING AND FALLING
SHUTTLE BOXES OF LOOмs to be as follows:-
Our Invention relates to that class of rising box looms, in which the shuttle
boxes are raised and lowered by means of eccentrics or other equivalents therefor
such eccentrics or other equivalents therefor being actuated by gearing brought
into action by a pattern chain passing around a vibrating barrel and consists in
arrangements by which we are enabled to employ a much shorter pattern chain
called hereinafter the card chain than has hitherto been possible.
It has hitherto been customary to advance the card chain above referred to one
"card" for each two picks of the loom but by our invention we advance the card
chain aforesaid at such times only as it is requisite to raise or lower the "shuttle
boxes" above referred to or to bring a "repeat card" into position according to the
pattern required to be produced-For this purpose we employ a chain barrel
connected by suitable gearing to the crank shaft of the loom such chain barrel
aforesaid being provided with a chain which is formed of suitable links which as
they revolve arrive in contact with a star or ratchet wheel fast upon the axis of
the barrel which operates the card chain above referred to, which card chain brings
the eccentrics or other equivalents therefor into action for raising or lowering the
"shuttle boxes."

page_text: We JAMES COWBURN Manager and CHRISTOPHER PECK Manufacturer both of
Silk Street Mill Eccles in the County of Lancaster do hereby declare the nature
of our invention for IMPROVEMENTS CONNECTED WITH THE RISING AND FALLING
SHUTTLE BOXES OF LOOMS and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
Our invention relates to the class of rising box loom in which the shuttle boxes
are raised and lowered by means of eccentrics or other equivalents therefor such
eccentrics or other equivalents therefor being actuated by gearing brought into
action by a pattern chain passing around a vibrating barrel and consists in arrange-
ments by which we are enabled to employ a much shorter pattern chain called
hereinafter the "card chain" than has hitherto been possible-It has hitherto been
customary to advance the card chain above referred to "one card" for each two
picks of the loom but by our invention we advance the card chain aforesaid at
such times only as it is requisite to raise or lower the "shuttle" boxes above
referred to or to bring a "repeat card" into position according to the pattern
required to be produced.
In order that our invention may be thoroughly understood and readily carried
into effect we will now proceed to describe the same by reference to the drawing
hereunto annexed-Fig: 1 is a side elevation of so much of a loom as is necessary
to illustrate our invention Fig: 2 is a plan of the portion of a loom shown in
Fig 1 and Figs 3, 4, 5, 6, 7 and are views of detached portions. Similar letters
of reference are applied to corresponding parts throughout the whole series of
figures. a. b. are the eccentrics by means of which the shuttle boxes are raised
and lowered in the ordinary manner-The eccentrics a bare brought into action
to raise and lower the shuttle boxes, by means of the spindles or darts c. d as will
be well understood by persons conversant with looms of the class to which our
invention relates.
Secured to the end frame f of the loom is a bracket g, which bracket g supports
the ordinary eccentrics a. b and gearing by which the shuttle boxes are raised and
lowered Secured to the bracket g is a stud mounted upon which stud is a
chain barrel k-Capable of being rotated upon the stud h and fast with the chain
barrel is a star wheel -At m is the wheel by which the apparatus for raising
and lowering the shuttle boxes receives rotary motion from the crank shaft n of
the loom Secured to the wheel m is a disc o provided with pins p which as the
disc o rotates periodically impart rotary motion to the star wheel l, so as to turn
such star wheel 7, a portion of a revolution in the direction of the arrow A after
which the star wheel aforesaid is held stationary by a projecting part q formed
upon the disc o. Upon the stud h is mounted a bracket which supports the darts
or spindles c. d. Secured to the end frame f of the loom is a brackets to which is
secured a stud t-Mounted upon the stud t so as to be capable of being vibrated
there is a frame u-The frame a being provided with bearings supports a short
axle w, upon which short axle w is mounted the card chain barrel a around which

page_text: card chain barrel, the card chain y passes-The card chain barrel x is provided
with projecting pins or nipples by which the card chain y, is advanced Fast
upon the axle w of the card chain barrel is a disc 1 having flattened portions
formed thereon At 2, is a rod forced upwards by the spring 3.
The flattened end 20 of the rod 2 acting against a flattened portion of the disc 1
tends to prevent the card chain barrel x from rotating except at such times as
rotation of the said card chain barrel x may be required-Fast upon the axle w is a
star wheel 4 and mounted upon the said axle w and free to be revolved thereon is
a bowl or roller 5-Extending from the frame u is an arm u¹ to which is secured
one end of a spring 6 the other end of which spring 6 is attached to a bracket 7,
fast upon the end frame f of the loom-The spring 6 tends to turn the frame u in
the direction of the arrow B-Passing around the chain barrel k is a pattern
chain 8 shown partly in dotted lines in Fig 1 a portion of which pattern chain 8
is shown upon an enlarged scale in Figs 4 and 5. Fig: 4 being a side view and
Fig 5 a plan thereof-The pins 9 by which the links of the pattern chain 8 are
secured together project at each side of such pattern chain 8 the projecting parts 9ª
of such pins 9 passing into recesses formed in the chain barrel k-The pattern
chain 8 is driven by the rotation of the chain barrel -We prefer to form the
pattern chain 8 of three rows 8a 8b 8° of links one row 8a of links being formed of
connecting links only, one of which connecting links is shown detached in Fig: 6.
The rows 8b 8° of links being formed partly of links similar to that shown in
Fig 7 and partly of links similar to that shown in Figs 8 and 9.
:
To the side frame f of the loom, by means of a stud 10 is jointed one end of an
arm 11. Carried by the arm 11 is a stud 12 carrying a roller 13 around which
roller 13 the pattern chain 8 passes-To the stud 12 is attached one end of a
spring 14 the remaining end of which spring 14 is fastened to the frame f of the
loom The spring 14 tends to turn the arm 11 in the direction of the arrow D
thereby causing the roller 13 to act as a guide for the lower part of the pattern
chain 8.
Every two revolutions of the crank shaft n of the loon will cause one revolution
of the disc o which will cause the star wheel L, and pattern chain barrel / to be
turned so much of a revolution as is equal to two divisions of the star wheel / such
turning of the pattern chain barrel k will cause one of the links of the chain 8 to
act against the bowl 5 upon the axle w of the card chain barrel x.
When the parts are in the position shown one link 8d of the pattern chain 8 has
arrived in contact with the bowl 5, and has thereby turned the frame u in a
direction opposite to that of the arrow B. Upon the pattern chain-barrel k being
further rotated the link 8d will pass away from the bowl 5 and the spring 6 will be
at liberty to pull the frame u in the direction of the arrow B thereby advancing
the card chain y towards the ends of the darts or spindles c. d and causing a plate
or link of the card chain y to act upon one or both of the spindles or darts c. d in
the usual manner as the pattern to be woven may require-Upon the pattern chain
barrel being further rotted the link Se of the pattern chain 8 will arrive against
the bowl 5 and thrust the frame u into the position shown in the drawing and
upon the pattern chain barrel being still further rotated the link S of the
pattern chain 8 will be brought into contact with the bowl 5 before the extended
portion So of the link 80 has been carried clear of the bowl 5 by the motion of the
pattern chain barrel k and will retain the frame u in the position shewn in the
drawing thereby preventing the card chain y from acting upon the darts or
spindles c. d.
From the foregoing it will be seen that as the frame u is allowed to move in the
direction of the arrow B by the pattern chain 8, the links or plates of the card
chain y will be caused to act upon the darts or spindles c. d.
In order to rotate the card chain barrel x we employ links S* provided with
projecting parts 881 shown more clearly in Figs 4 and 5-formed upon one side of
each of such links 8 which projecting parts Set pass into the recesses 4ª formed in
the star wheel 4 and thereby rotate the card chain barrel a so as bring a fresh link
:

page_text: or plate of the card chain y into position for acting upon the darts or spindles c. d
as the pattern being woven may require.
From the foregoing it will be readily understood by persons conversant with
weaving that it will be requisite to advance the card chain y to cause a fresh link
or plate of such card chain y to act upon one or both of the darts or spindles c. d
only when the shuttle boxes are required to be raised or lowered or at such times
as a repeat card is required to be used.
Although we have only shown and described our invention as applied to looms
having four shuttle boxes it will be readily understood that our invention may be
applied to looms having a greater or less number of shuttle boxes raised or lowered
by means of eccentrics or other equivalents therefor.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is
The pattern chain 8 provided with projecting parts 81 star wheel disc o pro-
jecting part q pins p when used in conjunction with each other by means of which
pattern chain 8 the star wheel 4 and card chain barrel x are caused to remain
stationary except at such times as the card chain y is required to be advanced and
by means of which pattern chain 8 and projecting parts 81 the star wheel 4 is
rotated at such times as the card chain y is required to be advanced and which
pattern chain 8 with its projecting parts 881 and star wheel 4 are constructed and
arranged and operate for the purposes and substantially as herein before described
and shown in reference to and in and by the drawing hereunto annexed.