IMPROVEMENTS IN THE MECHANISM FOR OPERATING AND CONTROLLING THE CHANGE SHUTTLE BOXES AND SHUTTLES OF LOOMS
Year: 1884

page_text: COMPLETE SPECIFICATION, .
I ALFRED GEORGE BROOKES of the firm of W Brookes & Son of 55 Chancery
Lane in the County of Middlesex Fellow of the Institute of Patent Agents do
hereby declare the nature of my Invention for IMPROVEMENTS IN THE MECHANISM
FOR OPERATING AND CONTROLLING THE CHANGE SHUTTLE BOXES AND SHUTTLES
OF LOOMS and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:
1
This Invention in looms consists in improvements in mechanism for operating
the change shuttle boxes positively and for holding the same in position while the
shuttles are being picked.
Also in improvements in the pattern mechanism for the change shuttle box
mechanism.
Also in improvements in the lay and its guides for the change shuttle boxes and
means for bracing and adjusting the guides whereby they are prevented from being
twisted out of shape or from sagging as will be described.
Also in improvements in protector or stop motion mechanism whereby the
shuttle is prevented from getting into and breaking the warp threads as will be
hereinafter inore fully described and pointed out in the claim at the end of the
Specification.
4.
Figure 1 is a view in side elevation of a sufficient portion of a loom from a
point a little below the crank shaft to represent the improvements in shuttle box
mechanism.
Figure 2 a section of Figure 1 on the lines S-S looking toward the right.
Figure 3 is an end elevation of most of the upper portion of this improved loom
sufficient to show the pattern mechanism and means for operating it omitted from
Figure 1, because of lack of space on the Drawing Figures 1 and 2 together showing
the work of one end of the loom each Figure having however some devices common
to both

page_text: Figure 3a is a sectional detail of the pattern mechanism or plate and the plate h³
below it.
Figure 4 is a view of the parts shown in Figure 3 looking toward the right of
the section line S' S¹ of Figure 3.
Figure 5, is a partial broken plan view of the pattern surface and some of its
cooperating devices to be described.
Figure 6 a detail of the lay change shuttle boxes and their guides and some of
the parts carried by the lay.
Figure 7 is a plan view of Figure 6 with the shuttle boxes binders picker sticks
and guide m omitted.
Figure 8 a detail in end view of the outer guide in which the shuttle boxes slide,
together with its brace.
Figure 9 a sectional detail of the breast heam of the lay to illustrate the
operation of the protecting mechanism other parts of which are shown in Figures 3.
7 and 11.
Figure 10 represents in sectional detail the presser finger and catch and shuttle
binders and shuttle boxes.
Figure 11. represents an arrangement of protecting devices where change boxes
are used on both sides of the loom.
Figure 12.a section through-the-line S S of Figure 11.
Figure 13 a section of the parts H-and-Gon the line S Figure-3-looking down.
Figure 14 a detail in front elevation of the sliding frame to be-referred to
and its horn.
Ri 15
anlon and side elevation of the ratchet lever to be referred to.
Figure 21 details of the lever J' to be referred to.
Figure 22 a view in detail corresponding with Figure 4 but contains only the
pattern disk and its shaft, the frame G and G and the appurtenances of said
frame Gr
Figures 23 and 24 details of the lay to be referred to.
In the several Figures like lettors indicato like parts.
A is part of the loom side A¹ the main cam shaft and A" the crank shaft the
latter driving the former by the gears T, T. partially shown in dotted lines
Figure 3.
The hub a forming part of the loom side, has a stud b which supports the shuttle
box lever B, connected at its front end by stud b' with the box rod C, shown in
Figures 1 and 6, the said rod being attached to the change shuttle boxes by the
pin C¹.
The stud & fast upon hub a¹ on the loom side, see Figure 2 supports the swinging
frame D. provided with a sleeve like hub which receives upon it the hollow hub of
the arm D¹.
The swinging frame D has a fixed stud which supports a hook ", that
normally engages a tooth d³ at one end of the arm D', thus forming a connection
between the said swinging frame and arm D¹, so that they swing together so long
as the hook d is pressed against the tooth d³ by the spring d connected with the
said hook and with an ear at the upper end of the frame D.
The arm D' has suitable rolls d³ to bear upon the cam D³ fast upon the main
cam shaft A', the rotation of the cam swinging the arm D' and frame D in unison,
so long as the hook d engages tooth d³ referred to.
The frame D has two studs d and d for the two connecting rods d³ and d
which are joined respectively with the studs and e¹ fast upon the arm E and a

page_text: segmental head E³ of the arm E', the said arms being loose upon the stud bat
the side of the shuttle box lever B.
The arms E and E¹ are worked by the rods ds and d³.
The arin E has a segmental head E" and arm segmental head E³, each lead
being set off at one side of the arm as in Figures 2 and 18, and being provided
with a series of steps, the lower end of each head forming one of the said stops
the steps being in number to correspond with the number of cells in the series of
shuttle boxes employed.
In the present instance there are six cells and consequently six steps or shoulders
and in the Drawings I have designated the said steps as 1. 2. 3. 4. 5. 6 each step
representing by its number the cell of the series of shuttle boxes counting from
the top which will be in line with the shuttle race of the lay M. when such
shoulders are engaged by the sliding har b¹ held in bearings B¹ upon the shuttle
box lever B, the steps on the head E are numbered upward and those on head E³.
downward.
The bar has two arms 7. 8 shown in Figure 1.
The arm 8 is acted upon by one arm of an elbow lever G¹ having its fulcrum
at g on arm G fixed on stud band joined at its upper end by connecting rod Qu
with the sliding frame G to be hereinafter described the said arm G¹ being
vibrated at the proper times to move the sliding bar bas berein shown in a
direction away from the front of the loom the said bar being moved in the opposite
direction as far as the lever G¹ will allow, by an arm G³, see Figures 1 and 2
mounted loosely on a fixed stud g', the said arm being held by a spring g" heroin
shown as connected with an arm G pivoted at g³ upon an ear of the loom side.
The spring g may if desired bo attached to a fixed stud on the loom sido
instead of to the arm Gas shown.
The advantage in attaching the spring to the arm G is that as this arm swings.
towards the front of the loom it relieves the strain upon the said spring so that it
shall not press the end of the bar b' against the steps 1. 23 & of the segmental
head E3 of the arm E' as said head is moving upward.
In this way the bar is kept from clicking upon the steps 1. 2. 3 &* during the
upward stroke of the said head.
After this head has reached the upward extremity of its stroke, the swinging
of the arm G* toward the back of the loom strains the spring g' so that the bar b₁
is brought to its place against the steps of the segmental head E³.
The segmental heads E and E' are moved downward and then upward in
unison by the cam D³ so shaped as to impart to the segmental heads a movement
the rate of which toward the end of each stroke is gradually diminished and are
effective in moving the shuttle box lever only during their downward motion and
consequently the shuttle box rod is raised or lowered positively in accordance with
which of the heads first engages the sliding bar b' the box rod being raised when
the head E is first engaged and lowered when E³ is first engaged.
During their downward movements one of the steps on one of the segmental
heads will be met by one end of the bar b', it having been placed in proper
position by the pattern surface, and acting thereon, will turn the shuttle box lever
in unison with it about the pin b and as these heads complete their movements
the other end of the bar will be met by that one of the steps of the other heads
which is designated by a figure like that designating the step on the other head
already operating the shuttle boxes, and as the cell of the shuttle box which it is
desired to use comes opposite the race of the lay both heads bear upon opposite
ends of the slide bar 61 and lock the shuttle box lever temporarily in position.
The different positions in which the shuttle box lever is locked are such as
bring the different cells of the change shuttle boxes into line with the race plate,
which one of these positions shall in any given ease be taken by the lever
depends upon how far one way or the other the bar 61 has been moved in its
bearings B¹ since the place of the bar to the right or left determines which of the

page_text: steps of one or the other of the segmental heads shall first come in contact with
the bar bl.
Whenever from the catching of the shuttle or from any other cause the shuttle
box will not move as it ought the hook "having an inclined face in contact with
the troth a³ will partly or altogether uncatch and thus avoid the breaking of the
parts which would occur if the connections throughout were unyielding.
Indeed in the ordinary working of the loom, in order to cover slight irregu-
larities such as are found in the kind of workmanship which is put into looms and
be sure to have the steps of the segmental heads come fairly to a bearing on the
two ends of the bar b¹ it will be necessary to make the adjustment so that the
catch shall ordinarily yield a little.
With the two segmental heads E" and E³ connected by means of rigid rods d³
and do with the rigid swinging frame D, the pressure upon one end of the bar bl
cannot preponderate over the other, and carry the said bar beyond the exact
point where it should be locked at rest with the two segments and when the
catch d gives way it releases equally both the beads Ell and E³.
This feature which brings the shuttle boxes exactly into position, is of decided
value in the working of the loom.
When the shuttle boxes are being shifted the end of the bar b¹ and the step
–which it meets at the completion of its movement will strike with a slam unless
some provision is made to somewhat check-the movement of the parts.
Such provision is herein made as follows-vizat.one_end of the shuttle-box-
lever B is a pin 6¹¹ upon which is placed a lever X having arms
Figure 20.
A pin 6ª on this lever connects it with a bar 6 having a spur 67 which at its
front end moves-in-a-slide-B" which is on the shuttle box lever u.
The arms referred to has a spur 10 which at proper-times-catches one of the
series of notches E on the outside of the head Elf
The spur 67 on the bar 6 referred to at the proper time catches-one-of-the_series_
of notches E³ on the outside-of-head-E
The lever F bears against the end of the arm 6. This lever F shown-separately
in Figure 19 swings upon a stud f which is fastened to the loom side, and is
drawn against the end of arm 68 by the spring F¹.
Now when the lever B begins to swing one way or the other the drag of the
arm upon the face of the lever F swings the lever having the arms b³ b* about
the pin so as to move either the spur 10 or the spur b' into the notches E' or E³
respectively.
This catching of one of the spurs upon one or the other of the segmental heads
prevents the lever B. from going faster than the said heads, and makes the said
lever stop as gradually as do the heads, according to the action of the cam D³ as
above described.
The bearing of the upper one of the rolls d³ of lever D¹ upon the cam D³ acts to
hold the segmental heads back during their downward movement.
When the downward stroke of the heads has been completed it is necessary that
one of the spurs 10 or 67, which is in engagement with one of the notches of one
of the hends should be withdrawn before the upward stroke begins, so that the
lever B shall be left in its new position until the proper time for another change of
shuttle is to take place.
Opposite to the face of the lever b b 68 is the arc shaped plate e¹⁰ having the
ear and the projecting arm c¹¹.
Through the ear el passes the pin
at e².
which is fast upon the lever e³ eº, pivoted
The forked end of arm e" slides upon the pin e³ which is fixed upon an ear of
the loom side.
The upper end e of the lever e, e, bears upon the cam F" shown in dotted
lines Figure 6 which is fast upon the main cam shaft A' and of course turns
with it.

page_text: This cam is so set upon the shaft and is so shaped that when the downward
stroke of the heads Es, Es has been completed the end eº of the said lever will be
raised and carry the arc shaped plate eo to the left, and the latter by its pressure
against the face of the lever ba bi be will positively turn and bring the latter into
its middle position notwithstanding the friction exerted between the lever F and
the part 6 holding the spurs 10 and 6' both clear of the teeth E and E of the
heads.
Fast upon the lever B is an arc shaped plate B, upon which bears a friction
brako or pad B" at the end of an arm Bs. pivoted upon a stud. B³ fast to the
loom side.
•
Connected with arm B³ is another arm B provided with a moveable weight B
which acts to press the brake pad B" against the arc shaped plate B..
The action of the brake or pad B is to steady the lever B as it swings, and to
hold it in the position in which it is loft by the shifting mechanisin above
described.
F3 is a spring connecting the arm B' of the lever B and an eye bolt 12 fastened
to an car A³ on the loom side to counterbalance the weight of the shuttle boxes.
When the lever G before described is swung to the right scé Figuro 1, it
operating through the spring g" presses the arm G³ against the horn 7 of the
bar band tends to carry this bar to the left drawing the other horn 8 of the bar
against the lever G'.
The extent of the movement of the bar b' to the left view Figure 1 under the
action of the lever G and spring gl and consequently the position to which the
shuttle boxes are subsequently moved is determined by the position of the lever G
actuated by the rod G₁ worked from the pattern mechanism in a manner which
will now be set forth.
The rod G (see Figures 3. 4 and 5) passes through an ear on a sliding frame C³.
A collar 13 on the rod G₁ bears against the under side of the said car and is
kept there by the spring which is compressed by the nut 14, see Figure 3 on
the top of the said rod.
The spring g' is introduced to allow the rod G₁ to yield whenever in the
working of the mechanism with which it is connected anything catches.
The two ears of the frame Q³ slide but do not turn upon the rod H which is
fastened into the ears A³ forming a part of the loom side.
The shaft H also guided in the cars A³ has a rotary and also a lengthwise
inovement and turns in ears in the frame G see Figure 3 and mostly in dotted
lines Figure 4 which is kept from turning with the said shaft by an ear A see
Figure 3 on the loom side.
.
The shaft H¹ is supported upon the lower ear of this frame Ge, a shoulder being
turned on it as shown.
Fastened to the top of the shaft H¹ is a pattern disk H" in which are two rows
of holes which receives pattern wires or pins of different lengths according to the
pattern to be woven in the loom.
Secured to the same shaft H¹ below the pattern disk is a plate or disk h³ having
a series of teeth hs and having at its periphery a series of teeth to cooperate with
a detent he see Figures 3 and 5 to be described.
The disk supports the lower end of the said pins.
These wires are omitted in Figure 4 but fully shown in some of the other
Figures In the frame G³ a pin g² is fastened.
This pin is placed just over and in the line of the inner circle of pattern pins h
in the disk H and as the disk is revolved the different pattern pins pass in
succession beneath the pin g².
As each pattern pin h stops beneath d³ the disk Hu with its pins is raised and
always to a certain height.
At each elevation of the disk H" the frame G³ will be lifted to an extent which
depends upon the length of the pattern pin then under the pin and as the
frame G is lifted it raises with it the rod G₁ before described which turns. the-

page_text: lever G which moves the sliding bar b' and determines which shuttle box shall be
brought into line with the shuttle race as before described.
There are of course as many lengths of pins as there are cells in the change
shuttle box in this case six.
The foot of the frame G rests upon the arm G7 of the lever G before described,
the said lever having a second arm G³ provided with a roll which bears against
the face of a cain I fast upon the main cam shaft A¹, the said cam as it revolves
moving the lever G, raising and lowering the frame G5, and with it the shaft H¹
and pattern disk H" and the pattern pins.
It will be seen hereafter that the pattern disk is not advanced so long as it is
kept near its uppermost position.
How it is thus kept, when a rest of a greater or less extent is required in order
that the shuttle in the box corresponding to the length of pattern pin then
operative may be used for more than two picks, will now be explained.
Upon the bar H is a second frame G5 which slides but does not turn thereon.
This frame G at its top has a pin which is placed over the line of the outer
circle of pattern rest pins 6' in the pattern disk.
The lower end of this frame GB has a jaw in which fits the end 6 of a ratchet
lever shown separately in Figure 15, mounted on a stud go projecting from one
-side-of-the frame and having upon its upper curved end at one side a series of
ratchet toeth /* and at the side of the teeth-a-notched_plate k³.
When the frame G and the pattern disk Hare-lifted, the frame G³ is also
raised by one of the pattern rest pins h¹ to a greater or less distance according_to
the length of the pattern rest pin which is under the pin g³.
Suspended upon-the-pin a which is fast to an ear A of the loom side sec
Figure 3. is a hook I shown separately-in Figure 21 which catches when opposite
to it upon the upper side-of--the plate- of the lever upon the upper side of
which plate are the ratchet teeth
When this hook is caught upon the arc shaped plate the frame. Go and the
pattern disk are held up by it and do not follow-the-arm G7 as the latter swings
downward.
Each stroke of the pawl i moves the ratchet h* one tooth to the right and when
the end of the plate passes from under the hook 1 the frame being at this time
in contact with the arm G7 follows the latter in its downward movement, the
shaft H and pattern disk supported thereby desconding with it.
The pattern disk having been brought to its lowest position is then advanced
one space in a manner to be hereafter explained.
It will be noticed that there are two means of moving the lever h³ one by the
action of the pattern pins through the frame G³, and the arm h" of the ratchet
lever h³, and the other by the working of the pawl i as just described so that
whatever the former fails to do in carrying the arc shaped plate clear of the hook I'
the pawl will accomplish.
If the sliding frame G³ is lifted by one of the longest of the pins h¹, the arc h³
will be swung so far to the right in Figure 3 that one stroke of the pawl will
complete its release from the suspension hook I', but if one of the shortest pins is
employed it will take six strokes of the pawl to complete the release of the said are
froin the said hook,
As each stroke of the pawl takes place only at each revolution of the main cam
shaft of the loom, or at every two picks of the loom, it follows that there may
be a rest of the pattern disk for an even number of picks not exceeding twelve
depending upon which of the different lengths of pin is operative.
Each pick puts in but one thread of filling,
The pin see Figures 1 and 2 on the swinging frame D is made to lift the
pawl i at the proper time so that it may not as the frame G rises, catch upon the
teeth and prevent the lever h³ from turning more or less toward the left on its
fulcrum gº.

page_text: Fastened to the uppermost ear A before referred to is a dat spring see
Figure 3 and dotted lines Figure 4 which bear against the sliding frame Gs and
hold it in place wherever it shall be left instead of allowing it to fall by its own
weight.
The horn on the frame G³ see Figures 4 and 14 and dotted lines Figure 3 is
struck by the plate has the latter descends thus carrying the frame to its lowest
position.
The lever J having its fulcrum upon the stud j fast upon the loom side and
operated by the cam Jattached to the crank shaft A carries at its upper end
on the stud a pawl J" which imparts rotary or step movement to the pattern
disk.
The pawl J on its lower side has a spur 17 to which is attached the spring j
connected at its other end with an eye bolt A fast in an ear on the loom side.
The spur on the upper side of the pawl J is drawn by the spring j³ against
the projection A7 on the loom side when not kept away from it by the action of
the cam J¹.
The left hand end of the pawl, see Figure 3 bears upon a step A³ on the loom
side which acts to prevent the right hand end of the said pawl from rising beyond
a certain point.
When the pattern disk approaches its lowest position (it being shown in the
Drawing as in its highest place) the plate h drops upon the right hand ond
Figure 3 of the pawl J" so that the upturned end of the latter catches into a space
between adjacent teeth at its lower side.
When the pawl J" moves to the right it turns the plate hand pattern disk one
space bringing other pattern pins under the pins g' and g³ of the sliding frame.
The teeth are square on both sides as is also the point of the pawl J" which
catches between them thus enabling the pawl to serve not only to move the disk,
but to prevent it from going too far.
To hang the pawl so that its upturned end will not be disengaged from between
the teeth when its stroke has been completed and thus permit the pattern disk
to over-run has been a matter of some difficulty, but has been accomplished by
providing the pawl with the spur 18, and the frame with the projection A7 their
point of contact being above the point of the said pawl for as soon as the spur 18
meets the warp the disk having been fully moved, the strain on the pawl acts to
press its end into the space between the teeth h with greater force.
The return stroke of the pawl is taken when the teeth of the plate are lifted
clear from the pawl.
At the top of the frame G is a stud h' upon which swings a detent which is
kept pressed against the peripherical teeth of the plate, see Figure 5 by the
spring attached to the adjustable collar which detent serves to bring the
plate hand the pattern disk H" exactly into place where they are held when
the pawl J is not operating to move the pattern disk.
Having described the pattern disk with its two rows of pins I will now describe
its operation.
The pins of the inner row determine which of the cells of the change shuttle
boxes shall be worked from time to time and those in the outer row how long
the pattern disk shall rest at the different points.
The greatest difficulty heretofore experienced in the use of a pattern disk or
wheel moving always uniformly-onward in the same direction has been that it was
necessary that the patterns of cloth which could be woven are limited to such as
contain a number of filling threads corresponding to the number of pins or spaces
in the circumference, of the pattern wheel or to patterns which contained a number
of filling threads by which the number of threads corresponding to the full number
of pins would be evenly divided.
This has led to the use of pattern chains which however combrous and
incouvenient may be made up so as to give any required lougth for the pattern but
in my arrangement the progress of the pattern disk depends upon the various

page_text: lengths of the pins put into the outer row of holes in the pattern disk. I have
provided the pattern disk with two rows of holes fifty six in each.
If in the outer row the shortest pins only are used there will be a rest for
twelvo picks at each end of those pins, or 672 picks will be made before the disk
gets around and the pattern is completed.
If only the longest pins are used in the outer row there will be a rest for only
two picks at each pin or 112 picks will be made at a round of the disk.
For a pattern requiring less than 112 picks the pins properly set for the pattern
will be repeated two or more times.
A pattern will ordinarily require different rests at different times but the 1
progress around the whole disk may within the limits of the capacity of the
apparatus be more or less rapid at pleasure.
The use of the horizontal disk with the vertical pin holes into which the pattern
pins may fit so loosely as to be easily put in and taken out in changing the pattern,
while the force of gravity keeps them from falling out and giving to the whole a
vertical movement so that there shall be simply an end pressure upon the pins
makes a combination of peculiar excellence.
When the filling breaks it is necessary to stop the pattern mechanism.
The bar Js is moved back and forth by an arm 19 see Figure 9 of a rock shaft 20
supported-in-bearings below the breast beam 21 the said shaft at its other end
baving an arm-22-which in practice-bears-against the rear end of the sliding bar of
any usual filling fork.
:
The bar Ja is supported upon the stud J' fixed to the loom side but-as-soon_ns_
the filling breaks so that the hooked rear end of the filling fork is caught by the
usual vibrating arm the shaft 20 by its connection with the filling fork is turned, s
the bar is moved-to-the right in Figure 3 and its inclined end runs upon the
pin 23-at-one end of the lever J see Figures 3-and-21, and the weight of the bar J³
being thus transferred from the-stud-J to the-lever. J the latter is depressed-and-
swung-about the fixed stud . The lever J has two spurs J, J
The spur J when the lever Jis-moved as just described catches upon the lower-
end of the lever J prevents it from swinging to turn the pattern-disk and at the
same time the stud J' lifts the pawl i so that it will not move the lever h³.
The lower right hand end of the bar J³ is connected with the bar JB by
the pin
The right hand end Figure 3 of the bar Jª made V shaped as shown engages the
projection GO, at the lower end of the arm Jo see Figure 17 which swings upon the
pin carried by an ear of the frame G see Figure 3.
The upper end of arm J" has a hook J which may be swung to catch upon the
teeth of the ratchet which being thus caught will not move under the suspension
hook I'.
In these ways the pattern mechanism is prevented from making any progress
when the filling is out.
The outer guide in which the change shuttle boxes slide has heretofore been
supported by some sort of a frame projecting from the lay near the line of the
shuttle race.
This projecting frame has had to meet at its outer end and unaided withstand
severe vertical and horizontal strains and has also been depended upon to keep the
outer guide from twisting out of parallelism with the inner guide.
The guides to direct the movements of the change shuttle boxes require to be
very stiff yet as increase of weight is decidedly objectionable in a piece having so
much motion as the lay I have had to devise means other than the weight of the
metal alone for stiffening the same.
In this my Invention I have made the outer guide for the change shuttle boxes at
the outer end of an arm connected as usual with the lay near the shuttle race and I
have made the said frame only sufficiently heavy to take the backward and forward
strain, and to overcome the twisting of the guide in any direction I have extended
its lower position downward as shown in Figure 6 and have connected it with an

page_text: extension of the lay rock shaft which has very little movement and may therefore
be made as heavy and stiff as desired this extension of the slide also acting as a
brace to support the slide and the outer end of the frame to which it is bolted.
In Figures 6. 7 and 8 M is the lay, M" the lay rock shaft m (see Figure 7) the
bracket, projecting from the shuttle race bean m¹ the brace m" the outer guide in
which the change shuttle boxes slide m³ an extension frame from the rock shaft
and m* an a ljustable foot m' and m³.
The bracket or frame m is connected to the lathe by the bolts m and to the
brace m' by the bolts m. The frame m³ may be slid back and forth on the rock
shaft to which it is fastened by set screws and the stand m' set as desired, thus
affording an opportunity to adjust and to firmly hold the guide m" in any position
required.
The bracket m near the sword of the lay has a stiff metal plate 48 bolted to it
(see Figure 7) by a bolt 49 and the outer end of the said plate has an end piece 50
which enters a notch 51 formed at the rear side of the outer guide m¹l (see
Figure 8) the said end piece being shown by the heavier dotted lines at the extrome
right hand edge of Figure 6.
The outer end of the bracket m is slotted (see Figure 24) and the outer end of
the metal plate 48 is also slotted (see Figure 23) to receive the bolts m6 m² one of
which is extended through a slot in the outer guide m" and slots in the said plato
and bracket as in Figure 23 while the second bolt m is extended only through
slotted holes in the said bracket and the metal plate 48 the said bolts and slots
thus permitting the outer guide to be adjusted in proper vertical position with
relation to the other parts of the loom or the inner guide.
Of course the details may be considerably varied while yet retaining the essential
features of my Invention.
Convenience may sometimes lead to placing the lower frame a greater or less
distance from the line of the shaft though the nearer it can be put to this line the
better will be the effect.
In the working of change shuttle box looms there has heretofore been a constant
danger of the shuttle being caught in the warp under conditions in which the
protecting mechanism will not operate to stop the loom and save the warp.
For example: It sometimes happens owing to breakage of the picker stick or
strap or from other causes that a shuttle is not thrown from, but remains in the
single box and when the change box shifts and another shuttle is thrown from it
across the loom this shuttle cannot enter the single box because of the other one
remaining in it but is stopped between the reed and the warp threads, breaking the
latter as the lay beats up.
It also sometimes happens that the change shuttle boxes shift by accident owing
to irregular working of the box motion after a shuttle has been thrown from one of
them and the shuttle last thrown in returning strikes against the shuttle which in
the change box has come improperly into line with the race plate of the lay and is
caught in the warp while yet the loom continues running.
I have made provision to meet these difficulties as I will now describe referring
to Figures 6. 7. 9. and 10.
I employ two shafts N. and N' which swing respectively in their bearings n
and n fast to the bean of the lay.
To the shaft N' are fastened the dagger N" and the finger n the latter bearing
against the shuttle binder 43 of the single box.
To the shaft N at the other end of the lay is fixed the arm N³, the end of which
bears upon the top of the dagger N" and also the finger n³ which bears against the
binders 44 as will be described of the change shuttle boxes as they come opposite
to it. The collars n' and n³ and the spiral springs attached to them tend to swing
the two shafts so as to keep the fingers n" and n³ against their respective shuttle
binders.
The top of the finger n³ projects so that it may fall between and catch against

page_text: the shuttle binders of the change shuttle boxes above and below it, see Figure 10,
when the cell opposite the said finger and shuttle race is empty.
The catching of the finger n³ between the binders, the finger having a projection
or hook thereon, at its innerside to act upon the binders above and below the
binder on which the finger presses prevents the shifting of the change boxes, until
the shuttle thrown from the change box across the loom has returned to it again.
If the shuttle boxes occupy their lowest position the projection or hook acts upon
the binder of only the top box of the series and vice versa.
The engagement of the point of the hooked finger with the edges of the binders
of the change shuttle boxes will prevent the shifting of the change boxes until the
said hooked finger is swung out by the return to the cell of the shuttle box opposite
the lay shuttle race, and opposite to the point of the hooked finger of the shuttle
last thrown across the loom.
It being essential to my Invention to have the hooked finger on the change box
Bide of the loom swing back only by the operation of the shuttle binders of the
change boxes the said hooked finger must not be fastened to the shaft which is
swung by the finger bearing against the binder of the single box, but must, as
shown be on a separate shaft for otherwise the presence of a shuttle in the single
box would disengage the hooked finger from the change shuttle boxes and allowing
these-boxes-improperly to shift would entirely defeat the object of the Invention.
The mechanism herein above described-absolutely prevents two shuttles being at
the same time on the line of the race plato-and-hence no collisions-can occur to
cause the breakouts above described.
By placing the dagger N" and finger N³ upon different shafts having fingers
-pressed against the binders by springs held on the said shafts, and placing the
finger No-on-top-of-the dagger it will be understood that the latter cannot riso
-sufficiently to strike the usual lever No pivoted-upon the under side of the breast
beam and cause it to release the-shipper handle so long as the binders immediately
opposite either of the fingers n", nare pushed outward by-shuttles in the boxes
but should the binders opposite-the-fingers nl n³ not be held out, then the springs
on the shafts containing the said fingers will act to effect the ascent of the dagger
and stop the loom.
A modification of the mechanisin just described such as is required when change
boxes are used on both sides of a loom is shown in Figures 11 and 12.
The two fingers nº are cach attached to a shaft N which swings in bearings n³
and n extending half way through the latter and each has an arm N the end of
which bears against the top of the dagger N which in this instance has a shaft
extending from it on both sides and turns in the two bearings n going half way
through each.
The end of the spiral spring N' presses against the underside of the dagger.
This spring is coiled upon a shaft 46, held in bearings as shown and is set by
turning on this shaft the collar 47 to which the spring is attached.
The ears 53 receive between them tho usual links which join the lay with the
crank shaft.
To prevent the frame D moving so far upward that the spur 3 of arm D¹ will
not re-engage the catch d³ I have provided the frame D at its lower end with a
lateral prong 54 shown best in Figure 2 which strikes against the hub of the
cam D³.
I am aware that a shuttle box lever has been swung about its axis by means of
a link connected with a lever carrying a sliding block, the position of which on the
said lever is determined by a pattern surface the said block having a spur which is
engaged by notched arms having fulcra different from each other and from that of
the shuttle box lever and from that of the lever on which the block referred to is
placed to slide.
In my Invention the shuttle box lever and the levers which act upon the slide
box have the same axis and because of having the same centre, sliding of the said
parts on each other while shifting the box is obviated.

page_text: A sliding plate moved by a pattern surface and having a double series of notches
has been engaged by two claws having the same centre of motion as the shuttle
box lever but in each contrivance the strain exerted through the pattern mechanism
to move the sliding plate is very considerable, the plate being necessarily much
heavier than the bar b' employed by me.
As the checking of the shuttle box lever, without jar is a matter of considerable
difficulty it will be seen that any extra or unnecessary weight carried by the said
lever becomes very objectionable.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. A change shuttle box, shuttle box lever provided with guides, means to connect
the shuttle boxes and shuttle box lever, a bar b¹ sliding in the guides on the shuttle
box lever, and suitable means to slide the said bar combined with the arms E, E¹,
having their axes of motion coincident with that of the shuttle box lover and
adapted to engage with the ends of the said bar b¹ on opposite sides of the fulcrum
of the shuttle box lever, the said arms E, E¹, being provided with steps to engage
the said sliding bar, and means to move the arms E, E substantially as shown and
described.
2. The lay, the change shuttle boxes, shuttle box rod, shuttle box lever provided
with guides slide bar b¹ carried in the guides of the shuttle box lever and means to
move the said slide bar combined with the two arms, E, E¹, having heads provided
each with a series of steps corresponding in number with the number of cells in the
shuttle box and having their axes of motion coincident with that of the shuttle box
lever and adapted to engage with the ends of said bar on opposite sides of the
fulcrum of the shuttle box lever, and with connecting rods a swinging frame with
which said heads are joined by said rods, and means for operating said frame and
causing the same to move the said heads positively in unison whereby a step of one
head engages one end of the bar and then a step of the other head holding the bar
equally at each end and locking the shuttle box lever when the shuttle box to be
used is opposite the lay race, substantially as described.
3. The shuttle box lever, and the slide bar carried on it, the lever G₁, and
rod G", combined with sliding frame G and pattern mechanism and suitable means
to lift the pattern mechanism as described, whereby the said bar is moved on the
shuttle box lever substantially as described.
4. The shuttle box lever, its slide bar b¹ provided with arms 7 and 8, combined
with the lever G³ spring to hold it and the lever G³, rod G", sliding framo G³ pattern
surface and means to lift said pattern surface, to raise the said frame substantially
as described.
5. The cam l, meaus to move it, the lever G, and spring 9", combined with the
lever G³, the sliding bar b' provided with arm 7, and the shuttle box lever,
substantially as described.
6. The arms E, E the swinging frame D provided with the pivoted catch d",
and the connecting rods ds, d' attaching both of the said arms to the said frame,
combined with the arm D¹, provided with a tooth d³ the spring d*, the cam to move
arm D', and with means to move the said cam whereby both of the said arms E, E',
are moved or stopped in unison, substantially as described.
7. The arm D provided with the tooth d³, the cam D³, and means to move it
combined with the swinging frame D, its catch and spring d', and prong 5+ to
limit the movement of the said frame in one direction substantially as described.
8. The shuttle box lever, the bar 6ª provided with the spur 6', and the lever X*
provided with the spur 10 and means to move the last named lever as described,
combined with the arms having segmental heads and provided at their outer sides
with notches to be engaged by the said spurs, means to move the arms provided
with the segmental heads and means between the said heads and shuttle box lever
to operate the latter, substantially as described.

page_text: 9. The shuttle box lever, the bar be thereon and its attached lever X, having
arm be, the lever F and the spring to hold it against the lever X', combined with
the arms E, E¹, having segmental heads, suitable means to operate them and with
means whereby the shuttle box lever may be operated by the said heads
substantially as described.
10. The shaft H¹, its pattern disc provided with pins and means to rotate and
lift the said shaft and disk, combined with the frame Go, its pin g³ the connected
rod G, the shuttle box lever, the slide bar mounted thereon, and means between
the rod G and said slide bar to move the latter, substantially as described.
5
11. The change shuttle boxes, the shuttle box lever, nicans to connect them, the 1
slide bar blever G¹, rod G¹¹, means to move the slide bar in opposition to the
lever G¹ and to engage the said bar to move the shuttle box lover, the sliding
frame G and pin slide frame Gs, its pin go, the lever h³, frame Go, pawl i and
means to move it, and the hook I combined with the pattern disk having two
series of pins h, h', the shaft H', and means to rotate the said pattern disk and 1
shaft and lift frame Go substantially as described.
12. The sliding frame Go, means to move it, the lever h³ pivoted thereon and the
frame G with which the said lever is connected means to move the frame G³, and
the hook I engaging the plate of the lever h³, combined with the pawl i and
means to move it substantially as described.
13. The pattern-disk H and plate h², below it, combined with two series of
pios h, k, inserted in the said disk H, and supported.at their lower-ends-by-the
plate, substantially as described.
2
14. The shaft H³, means to rotate it the pattern disk and pins, the sliding
frame. Go and means to lift it, the lever h³, attached thereto and having the plate h, 2
and suitable means to connect the said lever with the said pattern disk, combined
-with-thie.hook I and the pawl i and means to move-the-said pawl to engage the
ratchet teeth of the said lever h³-substantially as described.
15 Tho-pattern disk, its shaft H', and the plate ho, provided-with- teeth hand
pawl J provided with spur and means to move the said pawl longitudinally, 3
combined with the projection A', to operate substantially as described.
16. The shaft H, the pattern disk, the plate ho, provided with teeth 7º,
pawl J, lever J, stop As, and projection A7, combined with the spring
ineans to operate the lever J to move the pawl substantially as described.
the
and
17. The cam J¹, means to move it, the lever J, the pawl J", pivoted thereon, 3
combined with the stop As, and spring j", substantially as described.
18. The arm D' means to move it, its connected pawl ; and the lever j³ provided
with spurs 23 and J', combined with the bar J³ and means to move it to turn the
lever J and lift the pawl i substantially as and for the purposes set forth.
19. The bar J³, means to move it as described, the hook bar Ja and the lever Jº 4
provided with catch 7, combined with the frame G, means to lift it, the hook 1',
and the ratchet toothed lever h³, substantially as described.
20. The cam I, means to rotate it, the lever G' having the arms G³, G7, combined
with the frame Go, and its attached shaft H¹, and guide for the said frame
substantially as described.
21. The shuttle box lever, its slide bar b' provided with arms 8 and 7 combined
with the lever G³, spring 9" to hold it the lever C, rod G" sliding frame C³,
pattern surface, means to lift it to raise the said frame and with the lever G',
and means to move it substantially as described.
4
22. The lay having the bracket m, connected therewith rigidly, the plate 48, 5
and the adjustably attached outer guide m", provided with the downward
extension mi permanently secured to the lower end of the said guide combined
with the rock shaft of the lay and means to connect it with the said extension to
hold the guide from twisting or turning, substantially as described.
23. The lay and change shuttle boxes, the series of binders and suitable means 5
to lift the shuttle boxes, combined with the shaft N, a spring and a finger

page_text: provided with a projection or hook adapted to catch upon the edge of the binder
or binders adjoining the binder on which the finger presses to prevent the shuttle
boxes from being shifted tho said finger being swung to release the shuttle boxes
through the action of the binder substantially as described.
24. The lay, change shuttle boxes suitable means to operate them, the binders,
the hooked finger co-operating therewith, as described, the shaft and spring to keep
the finger pressed against the said binders and the arm N³, combined with the
binder 43, the finger n¹, rod N¹, the spring thereon and dagger N", whereby the
hooked finger will prevent the shifting of the change boxes until swung out by a
binder, and whereby the binder at the single box end of the lay may operate to lower
the dagger while yet permitting the hooked finger to remain in locking engagement
with the series of change boxes, to prevent the shifting of the change shuttle boxes
until the return of the shuttle last thrown into its cell in the series of change boxes.
25. The combination of the lay change shuttle boxes, suitable means to move
the boxes, and the series of shuttle binders with the shaft N, its hooked finger to
catch upon the binders, the spring on the said shaft, the finger N³ to act upon the
dagger, and a dagger and a shaft and spring to operate it, substantially as
described.