Improvements in and in connection with Shuttle Box Motions for Looms.
Year: 1891

page_text: Date of Application, 5th Feb., 1891
Complete Specification Lelt, 15th Oct., 1891-Accepted, 2'st Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements in and in connection with Shuttle Box Motions
for Looms.
I WILLIAM HENRY HACKING of The California Iron Works, Bury in the
County of Lancaster Machinist do hereby declare the nature of this invention to
be as follows :—
My said invention relates to the shuttle box motions of looms having several
shuttles working on the so called drop box motion principle as is well understood.
The present invention relates more particularly to modifications and improvements
in and upon a former invention bearing upon the same subject for which I have
obtained Her Majesty's Letters Patent No. 9957 of 1889. It is however to be
understood that my present improvements or parts of the same are also applicable
to drop box looms other than of the type set forth in my said prior Specification.
In the example illustrated in the Specification of the said former invention the
drop box with four shuttles was raised and lowered at the proper intervals by means.
of a compound excentric and the invention related mainly to means for turning the
said compound excentrics to the required extent and at the proper intervals. In
manufacturing looms in accordance with this invention I have found that simple as
the motion is nevertheless in case of breakage of weft or the like the ordinary
weaver is not always capable of readily manipulating the loom so as to bring up
the box containing the shuttle and weft he wishes to piece together. This will be
partly understood in view of the explanation that as there are but two pegs or
needles operated by the card cylinder to obtain the four motions (by virtue of the
compound excentric) it requires some slight thought as to which of the needles
should be handled so as to bring up the required shuttle box. The object of the
chief, part of my present invention is to provide such plain and unmistakeable guides
that no calculation is necessary as to what must be done to bring up the required
box. In carrying my invention into effect I slightly re-arrange the position of the
retained parts and place them in connection with the lower or tappet shaft' instead
of upon the crank shaft as in my said former invention. The two needles for
throwing the peg wheels in gear and so causing the rotation of the compound
excentric excentric pins or cranks are still retained but they operate in a somewhat
different manner. provide four double lever indicating arms pivotted at or about
their central part upon a shaft. The upper end of each lever is formed as a handle
50 that the weaver can lay hold of it and each lever is identified with a corre-
sponding shuttle box. For example shuttle 1 will correspond to lever 1, shuttle 2 to
lever 2, shuttle 3 to lever 3 and shuttle 4 to lever 4. Thus to revert to the chief
object of my invention, by pulling on the lever which corresponds to the shuttle
box which he wishes to inspect the weaver can raise it at once and without having
to exercise any selection or thought. The upper ends of the said indicating levers
are provided with pegs which come opposite to a vibrating card barrel perforated so
as to actuate the levers at the proper intervals. The lower ends of the levers come
opposite to two sliding bars carried in frames which are pivotted on a cominon stud
beneath or are arranged to slide. The sliding bars are arranged one above another
and lie in the same vertical plane. Each bar carries two fingers there being thus
four fingers in all, the said fingers coming opposite to one or other or all of the four
indicating lever tails. The pivotted or sliding frames have snugs which at times
operate the aforesaid two needles which are carried in bearings. The sliding frames
are operated by levers from cams connected with 'the compound excentrics. When
one or other of the indicating levers is operated from the vibrating card cylinder so
as to push over one or both of the pivotted frames and thus advance one or both of

page_text: the needles, the needle brings the existing peg wheels into action thus moving the
compound excentrics or other corresponding parts and cam whereby the lever is
operated which shifts the corresponding sliding bar in the pivotted frame thus
providing for a fresh operation of the parts. I provide means in conjunction with
the said indicating levers for bringing up any shuttle box of the four if the weaver
should wish to inspect a particular shuttle box or piece a broken weft. As has
been said this is in existing apparatus always a matter for calculation there being
no corresponding apparent parts ready to the hand of the weaver.
In the present
arrangement the weaver has the four indicating levers each corresponding to a
shuttle box. When the loom is at rest and the weaver wishes to piece up the weft
of the shuttle in box No. 3 for example he lays hold of the top of the lever 3 and
pulls it towards him. This pushes in one or it might be both of the two needles
and engages the peg wheels. At the same time the weaver operates a pivotted
treadle lever carrying a spur segment rack which gears with a pinion on a sleeve
carrying the said wheels. The treadle lever also carries an inclined part, which as
it rises pushes a spring locking clutch out of gear with the pinion on the sleeve
thus permitting the rotation of the sleeve and peg wheels and consequently of the
compound excentric whereby the required shuttle box is raised to the proper
height. The construction and arrangement of the peg wheels, gearing, compound
excentrics and parts are similar to the corresponding mechanism already described
and illustrated in the Specification annexed to my said former Patent No. 9957
of 1889 and need not therefore be particularised here.
My invention relates further to means for causing the cards to travel a certain
distance forward and an equal distance backward and so on during the process of
weaving thus utilizing the same cards again and again instead of having a con-
tinuous long chain of cards. For example suppose a fabric is being woven which
constitutes a stretch of plain weaving or repeat fancy weaving and then a strip or
border which is ornamental or coloured. Instead of having a long succession of
repeat cards to effect the plain weaving, interrupted at the requisite intervals, by
the cards which will effect the fancy or border weaving, I arrange that a short series
of the plain or repeat cards shall travel backwards and forwards, producing of course
the same effect as if the usual continuous series of repeat cards were employed.
When the requisite extent of plain or repeat weaving has been thus effected a part
comes into operation which causes the card barrel at the end of the series of plain
or repeat weaving picks to continue revolving in the same direction instead of
reversing as before, so that a new series of cards calculated to effect the fancy
weaving is brought into play and the weaving of the fancy strip or border com-
mences. I may also cause the cards to remain stationary for a given number of
picks when required. To effect the foregoing results I employ a chain carried on a
chain wheel and composed of links of three different heights. The highest link
effects a reversal of the card barrel in one direction, the lowest link effects a
reversal in the other direction, and the link of medium height causes the card to
remain stationary. The chain wheel is rotated to the extent of one link for cach
reversal of the card barrel. A lever bears upon the back of the chain and the
said lever operates directly or through the medium of a spring, a clutch fork or
clutch lever which engages with a clutch capable of sliding on a slip feather and
groove on the shaft of the card barrel. The clutch slides between two toothed or
recessed discs having clutch recesses in the bosses which gear with the sliding
clutch when it is pressed against one or the other. The said discs are both mounted
loosely on the shaft and are connected by a toothed wheel or disc which gears, with
both. When the aforesaid lever rests on one of the highest links in the chain the
clutch is thrown to one side thus turning the card barrel in one direction and when
it rests on one of the lowest links the clutch is thrown to the other side thus turning
the card barrel in the other direction. When the lever rests on a medium link the
clutch remains equidistant from both discs and drives neither so that the card
remains stationary. When the reversals have taken place a sufficient number of
times to weave the plain or repeat portion of the goods, instead of causing the last

page_text: high link to be followed by a low link or the last low link to be followed by a high
link, I cause the last high link to be followed by a high link or the last low link
to be followed by a low link so that instead of being reversed the card barrel
continues to revolve in the same direction thus bringing a fresh portion of the
chain of cards into operation so as to start the weaving of the fancy portion or
border. When this is completed the reversal of the motion of the card barrel
again recommences and the plain or repeat weaving goes on until the next
change.
Dated this 4th day of February 1891.
DUTTON & FULTON,
1, St. James' Square, Manchester, Agents.
COMPLETE SPECIFICATION.
Improvements in and in connection with Shuttle Box Motions
for Looms.
I WILLIAM HENRY HACKING of The California Iron Works, Bury in the
County of Lancaster Machinist 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 and accompanying drawings
My said invention relates to the shuttle box motions of looms having several
shuttles working on the so called drop box motion principle as is well understood.
The present invention relates more particularly to modifications and improvements
in and upon a former invention bearing upon the same subject, for which I have
It is however to be
obtained Her Majesty's Letters Patent No. 9957 of 1889.
understood that my present improvements or parts of the same are also applicable
to drop box looms other than of the type set forth in my said prior Specification.
In the example illustrated in the Specification of the said former invention the
drop box with four shuttles was raised and lowered at the proper intervals by
means of a compound excentric and the invention related mainly to means for
turning the said compound excentrics to the required extent and at proper
intervals.
In manufacturing looms in accordance with this invention I have found that
simple as the motion is nevertheless in case of breakage of weft or the like the
ordinary weaver is not always capable of readily manipulating the loom so as to
bring up the box containing the shuttle and weft he wishes to piece together. This
will be partly understood in view of the explanation that as there are but two pegs
or needles operated by the card cylinder to obtain the four motions (by virtue of
the compound excentric) it requires some slight thought as to which of the needles
should be handled so as to bring up the required shuttle box.
The object of the chief part of my present invention is to provide such plain and
unmistakeable guides that no calculation is necessary as to what must be done to
bring up the required box.
In carrying my invention into effect I slightly re-arrange the position of the
retained parts and place them in connection with the lower or tappet shaft instead
of upon the crank shaft as in my said former invention. The two needles for
throwing the peg wheels in gear and so causing the rotation of the compound
excentric, excentric pins or cranks, are still retained but they operate in a somewhat
different manner.
My invention relates also to a repeating motion for utilising the same cards again
and again instead of having a continuous long chain.
In order that my invention may be well understood I will describe the same
with reference to the accompanying five sheets of drawings.
In the said drawings
Fig. 1 is an elevation of a loom fitted with my improved drop box motion, parts
of the loom not necessary to the sufficient illustration not being represented.

page_text: Fig. 3 is a modification of part of Fig. 1 drawn to a larger scale than that fig.
Fig. 4 also drawn to a larger scale represents a horizontal section on the line
in Fig. 1.
In the said figs. or in Fig. 1a is the crank shaft m n are the two excentrics
which actuate the drop box lever N, and t is the pattern card barrel.
Other parts
which appear also in the drawings attached to my Specification Number 9957
of the year 1889 are marked with the same letters of reference in the drawings
hereto. Referring to Fig. 4 the two excentrics are actuated at the required times
by the two peg wheels ff which are mounted to slide upon the sleeve of a spur
wheel which is fitted to revolve upon the fixed stud as in my former invention.
The inner excentric m in the example is formed in one piece with the toothed
driver and the lock plate i and carries a second excentric m'. The outer
excentric n is driven by the toothed wheel which is provided with a lock plate i
and with an additional excentric. The excentrics m¹ and n' have been added for
the purposes of my present invention. The two needles which control the. move-
ments of the excentrics are seen at yy. When the needle y' is pushed inward the
peg wheel is caused to slide sideways and thereby to engage with the toothed
driver and the outer excentric n is caused to make half a revolution, the inner
excentric m making a half turn when the needle y is pushed inward as in my former
invention. The wheel gears with. a driving wheel which is fixed upon the
tappet shaft instead of upon the crank shaft so that the two wheels are of equal
diameter. Formerly the pattern chain barrel acted directly upon the two needles
but now interpose indicator levers corresponding in number with the shuttle
boxes there being in the example four such levers marked 1, 2, 3, 4 in Fig. 2.
In Fig. 1 levers 1 and 4 appear, the other two being supposed to be behind
the latter. Each lever represents a box as for example 1 represents box 1 and
so on for the others. These levers act upon the needles through parts which
are connected with the excentrics so that the excentrics can be actuated to
bring any box into position by acting upon the lever which belongs to such box.
The levers are mounted upon a fulcrum at P and pass through eyes in sliding
needles or studs there being a needle for each lever. The pattern chain
barrel is carried by a lever frame H which is mounted upon a fulcrum stud I'
and is vibrated to and fro by a crank which is fixed upon the end of the
tappet shaft and is provided with an adjustable crank pin 2 as shown more
clearly in Fig. 5. A link connects this crank pin with the lower end of the
swing frame H.a spiral spring we yielding to prevent breakage in the event of
excessive obstruction to the forward movement of the chain barrel. The pattern
chain would be adapted to act upon the four needles in the required order. So
long, as the chain presents holes to the needles the levers remain in the position of
lever 4 in Fig. 1 but on a needle being pushed in, the connected lever would be
moved into the position of lever I whereby its lower end would be moved toward the
lower needles y y'. Between the ends of the levers and the said needles I interpose
apparatus which is connected with the excentrics m' n' and which ensures that each
lever shall in all the positions of the drop box have the action upon the needles y y
or upon one of them which shall cause the corresponding box to be brought into
position. The diagram Fig. 9,shows the position of the two main excentrics when
box 1 is in use both excentrics being up. The dotted lines 1. 2 3 4 indicate the
levels of the dead centre, that is to say the centre of the outer strap n Fig. 1 in its
various positions. To bring up box 2 the inner excentric must be turned down, the
dead centre being thereby dropped to line 2. To bring up box 3 the outer excentric
must be turned down and to bring up box 4 both excentrics must be turned down.
To obtain the various changes from one box to another it is necessary that each
indicator lever shall be able to act at times upon the needle y at other times upon
the needle and at other times upon both needles. To obtain this effect I use
intermediate needles or parts which at times are interposed between the levers and
the needles y y' by the action of parts receiving motion from the. excentrics mn.

page_text: The action of these supplementary needles is illustrated by Figs. 3, 4, 6 and 7 in
addition to Figs. 1 and 2. Two needle boxes A B are formed with trunnions
which are mounted in bearings in a bracket, which is attached to, or formed in one
piece with, the needle bracket Y which carries the needles y y'. Upon a trunnion
of each box is fixed a lever arm and these arms are connected by strap
links a³ ³ Fig. 1 with the additional excentrics m³ n' the box A. being connected
with the excentric n and thereby with the outer excentric n and the box B with
the excentric m³ and thereby with the inner excentric m. The result of this con-
nection is that each movement of the excentric m or n causes the connected needle
box to rock upon its axis into one or the other of the two positions indicated in
Figs. 6 and 7. In Figs. 3 and 4 a modification in the method of connecting the
needle boxes with the excentrics is represented the straps of the excentrics being
connected with the lever arms a by means of connecting rods a³ ³ which pass
through eyes in the lever arms and act upon the latter through spiral springs which
yield in the event of any derangement which would interfere with the rocking of
the needle boxes. The movement of each needle box in both directions is limited
by a stop at or mounted in a fixed jaw as seen in Fig. 3. Each needle box is
provided with four intermediate needles which are divided into two sets which are
distinguished by the numerals 1 and 2 in Fig. 3 the two sets being on two lines
which converge towards a pusher head y Fig. 8 with which each of the needles y y'
is provided in order that any one of the four intermediate needles may be able to
thrust in the main needle. The form of pusher head adopted is indicated in Fig. 8.
The intermediate needles are disposed so that the two in the set 1 in the box A
come behind levers 1 and 2; the two in set 2 coming behind levers 3 and 4.
In box B the needles in set come behind levers 2 and 4 and the needles in
set 2 behind levers 1 and 3. This disposition is indicated by black dots and
circles in Fig. 2. In order that each lever may be able to act upon one or
both of the needles which are disposed behind it as aforesaid the lever formed at
its lower end with two fingers which project towards the needle boxes A. and Bas
seen in Fig. 1. Figs. 6 and 7 illustrate the action of the lever 1 or 3 upon one of
the two needles of set 2 in box B. When the needle is lowered into the inclined
position indicated in Fig. 6 the finger on the lever clears the needle, but when
raised into the position indicated in Fig. 7, the needle would be pushed in by
a vibrating movement of the lever and the needle y would be pushed inward as seen
in Fig. 7 the intermediate needle 2 simply serving to transmit the thrust of the
lever to the needle y. It will be seen that the needles in set 1 would be raised
into the inclined position when the needles in set 2 would be raised into the
horizontal position. The action of the excentrics in governing the position of the
intermediate needles will be understood by the aid of diagrams 1 to 4 wherein are
represented the positions of the said needles at the several times, when the four
shuttle boxes are brought into position. Each of the diagrams 1 to 4 indicate the
positions of the parts when the correspondingly numbered box is in position, the
dark dots representing the needles which are in position to be acted upon.
The lines numbered 1 to 4 represent the indicator levers. Referring to diagram 1
it will be seen that if lever 1 were acted upon there would be no result for the
reason that shuttle box 1 would be in position. By acting upon lever 2 the needle
in the box B would be pushed in whereby the inner excentric would be caused to
make half a turn and the drop box would fall to bring box 2 into use. If lever 3
were acted upon the outer excentric would be brought into action and the drop box
would fall to bring box 3 into position. If lever 3 were acted upon both excentrics
would be turned and box 4 would be brought into position.
The diagrams 2, 3 and 4 show the changes in the positions of all the intermediate
needles which would result from each action of the excentrics. An examina-
tion of these diagrams will make it apparent that any one of the four boxes can at
any time be brought into position by operating upon the lever representing such
box. The action when weaving is as follows. Each time that the pattern .card

page_text: barrel beats up, any needle of the set which has not a hole in the card presented
to it, is pushed forward and moves its lever from the position of lever 4 in Fig.
to the position of lever 1 whereby the lower end of the lever is pushed toward the
needle boxes A B and would push in any needle or needles in the sets 1 and 2
which would be opposed to such lever. Taking for example lever 2 with the parts
as represented in Figs. 1 and 2 this lever would push inward a needle in box B the
result being that needle y would be acted upon; the inner excentric m would be
turned and box 2 would be lowered into position; the lever clearing the needle in
box A. If lever 4 were acted upon a needle in each box would be pushed in;
both excentrics would be turned, and the drop box would descend to bring box 4
into use.
The indicator levers are extended above the needles sufficiently to
enable the operator to act upon any selected lever when the loom is not working.
By drawing forward any lever he can control the action of the parts upon the
excentrics so as to bring into position the required box. This however necessitates
the employment of means for turning the wheel 7.
In the example employ for this purpose a foot treadle T in connection with
parts which appear in Figs. 1 and 2 and in Fig. 5. The spur wheel which drives
the wheel is loose upon the tappet shaft but during the ordinary working of the
loom is caused to turn with the shaft by a finger, which forms part of the
clutch which slides upon the tappet shaft and turns with it. The said finger
passes through a slot in the wheel and engages with a block D which is fast
upon the shaft, so that all turn together.
When the clutch is shifted to the left hand in Fig. 2 the finger is withdrawn from
the block D and the clutch is put into driving engagement with a spur wheel b
which is loose upon the tappet shaft and gears with a spur sector T¹ Fig. 1 which
forms part of the treadle lever T. The shifting of the clutch is effected by a
spring levert which is hinged to the treadle lever.
When the treadle is pressed down by the foot the lever tacts upon a bowl u¹
upon the clutch lever see Figs. 1, 2, and 5, and pushes the latter over so as to
disengage the wheel b from the driving block D and to connect it with the wheel 1,2
which is rotated by the further movement of the sector T and the wheel q is
turned one complete revolution. In some cases it is not convenient to apply the
foot treadle and I therefore sometimes arrange for the turning of the wheel
hand. Figs. 10 and 11 illustrate two methods whereby this may be effected.
Fig. 10 shows a worm and worm wheel motion for the purpose; the worm being
fixed upon a shaft (R), which is provided with a handle, whereby the shaft can be
turned.
by
On the said shaft is a wiper (R¹) which strikes the bowl u¹ upon the clutch
lever u thereby disengaging the wheel & Figs. 2 and 5 from the driving block D.
and connecting it with the wheel 2 and the latter being rotated by the worm the
wheel is turned as required. In Fig. 11 bevel gearing is used in place of worm
gearing the action being substantially the same. Any suitable kind of gearing
may be used to transmit motion from the shaft (R) to the wheel b². I can vary
the details of the parts through which the levers act upon the needles y y
Figs. 12 to 15 illustrate modifications in these parts. In the modification illustrated
by Figs. 12 and 13 sliding bars A' B' take the places of the rocking boxes A B.
The bar A is mounted in the swing frame a which transmits the action of the
levers to the needle y; the bar B being mounted in a second swing frame 6
which transmits the action to the needle y'. Each bar is provided with two
projections marked 1 and 2 to correspond with the intermediate needles.. By
sliding a bar endwise into one or the other of two positions these projections can
be brought into the same relations with the levers as the needles in the boxes A B
as will be apparent when Figs. 2 and 13 are compared. The bars are slid to and
fro by cams n' which are connected with the excentrics m n as in the cases of the
excentrics m³ n'. The cam which acts upon the bar B is seen at n² in Fig. 12 the
lever which transmits the action of the cam to the bar being represented by .

page_text: With this motion the lower ends of the indicator levers may be straight. In the
fig. 4 represents the lower end of the lever 4. When the lever would be acted
upon it would press against projections upon both bars and the two swing frames
would rock upon their fulcrum at ' and would push in the two needles y y'. In
the modification illustrated by Fig. 14 revoluble shafts A2 B2 take the places of
the sliding bars formed or provided with projections marked 1 and 2. These
shafts receive from the excentrics mn an intermittent rotation to the extent of a
quarter revolution. The projections are opposite to one another on the two sides
of each shaft so that two quarter turns of either shaft will bring the projections
into the same relations with the levers as existed before such quarter turns as for
example supposing the projections 1 on one side of the bar to be behind levers 2
and 4 by a quarter turn projection 2 will be brought behind the levers 1 and 3
and by another quarter turn projections 1 on the other side of the bar will be
brought into position behind the levers 2 and 4. The projections which are in
horizontal line at any time serve to transmit the force of the selected lever to the
needley or y¹ or both as the case may be.
In Fig. 15 needles corresponding to the intermediate needles in Figs. 1, 2, 3, 4,
6 and 7 are used but are mounted in a hollow shaft B3 which is arranged to rotate
intermittently as in the case of 13. The two sets of needles 1 and 2 are arranged
at right angles one to the other so that a quarter turn of the shaft puts one set
into active position and turns the other set out of position. Each needle can act
upon the needle head y Figs. 6, 7 and 8 when either end is pressed by the
indicator lever so that two quarter turns of the shaft from the position indicated
in the drawing would bring needle 1 into active position again. Spiral springs or
suitable means are provided to retain the needles in their seatings but these do.
not appear in the drawing. The shafts might be acted upon to make a quarter
turn first in one direction and then in the other in either example and each shaft
might be provided with more than one complete set of needles or projections as
for example if a shaft had two sets of No. 1 and two of No. 2 needles or pro-
jections an eighth of a turn of the shaft would effect the necessary changing of the
sets. Although the foregoing description and drawings refer to two working
needles to work motions for four shuttle boxes I do not confine myself to this
number of boxes as it will be evident that the arrangements can be applied for
example to motions with one needle for two shuttle boxes or with three needles for
six shuttle boxes and so on.
My invention relates further to a repeating motion for utilising the same cards
It frequently
again and again instead of having a continuous long chain of cards.
happens that however complicated may be the design or pattern to be woven. it
is, as a rule, always possible to split it up into sections repeated several times so
that by arranging to traverse the cards backwards and forwards several times it is
apparent that a short chain of pattern cards, representing a section of the design
will answer the same purpose as a long chain, provided means be applied to the
motion to indicate not only the number of repeats but also the periods as to time
and general design. My improved repeating motion is illustrated by Figs. 16
and 17 of the drawings. Fig. 16 being a side elevation and Fig. 17 a back view
of the motion. The card barrel t is of the usual construction, except that it has
three sets of holes instead of two sets so that three needles may be used instead
of two. yy are the two usual working needles and the central needle y² is the
indicating needle which controls the auxiliary chain d² d³.
The wheel is loose on the barrel and there is a second wheel ¹ which is
also loose on the barrel t. The two wheels are connected by a carrier wheel w³ so
that the wheels revolve in opposite directions. The two wheels u u¹ carry
projections or spurs & s¹. A sliding clutch. C located between the said two
wheels u has suitable cavities to fit the said spurs s' and as the clutch C
slides on a key bedded into the neck of the barrel t, it is clear that the said
barrel must turn in one direction if the clutch C is in contact with the wheel
and in the opposite direction if the clutch C is in contact with the other wheel u'.

page_text: The clutch lever c³ can turn round a stud c and carries a spring c² which rests
upon the links of the auxiliary chain d³. Another spring not shown in the
drawing keeps the clutch C always in contact with the wheel u so long as the low
links d pass underneath the spring c²; but if a high link d³ passes underneath then
the clutch C is thrown into contact with the other wheel so that the motion of
the card barrel is reversed. In Fig. 17 I have shown only two varieties of chain
links, viz. low links and high links d³ but I sometimes introduce links of three
different heights, the object of the intermediate links being to keep the clutch C
out of gear with both wheels u u', and consequently the barrel t stationary so long
as required so that a * block that is it say a stretch of "equal-wefted-weave
will occur in the web. The duration of the "block" is controlled by a suitable
counting apparatus to which the auxiliary chain transfers its motion and from
which it receives its motion back again as soon as the "block" is nearing its end.
It only remains to show how the auxiliary chain d² d³ derives its motion from the
loom.
"
Referring to Figs. 16 and 17 a is the usual crank-shaft of the loom and it carries
a peg wheel A having one peg X which may or may not drive the star wheel el
according as the peg wheel A is shifted within reach or out of reach of the said
star wheel e. This shifting, in and out, is accomplished by a grooved cam which
is fixed to the said peg wheel A' and it so operates that if the secondary needle y³
is pushed into the said grooved cam it will throw the peg wheel A' into gear with
the star wheel e but as soon as the secondary needle y flies back again a suitable
spring will immediately take A' out of gear with the star wheel e' so that the
latter will come to a stop. By suitable gearing the motion of the star wheel e¹ is
transferred to the barrel which carries the auxiliary chain d² d³.
It will be seen by reference to Figs. 16 and 17 that the centre needle y² acts
upon a bell crank lever having its centre at ² and by means of a connecting
wire w the action is transmitted to the other bell crank lever ho, having its
centre at and this lever transfers it to the secondary needle y³ so that all the
motions of the centre needle y' are promptly imitated by the secondary needle y³
which acts upon the said grooved cam. Nearly all the pattern cards A A have
holes in the centre so that when the card barrel t beats up, the centre needle y²
simply passes through the said holes and does not move so that the auxiliary
chain remains stationary.
The case is different when a pattern card A comes round which has a blank
centre that is to say no hole. Then the needle y is forced back and consequently
the secondary needle y³ is pushed into the grooved cam so that the auxiliary
chain will advance one link. So long as there are blanks in A the auxiliary
chain is forced to advance but so long as there are holes the auxiliary chain
remains stationary.
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
1. In shuttle box motions of the indicated nature the employment of indicator
needles, indicator fingers and levers and auxiliary needles between the pattern
cards and the working needles for the purpose set forth so that each shuttle has its
corresponding indicator lever by operating which the weaver may bring up any
desired shuttle box substantially as herein before described and shown.
2. In shuttle box motions of the indicated type the employment of a treadle or
hand wheel and disengaging clutch arrangement in combination with the aforesaid
shuttle indicator levers whereby the weaver may raise any required shuttle box
by simply operating the corresponding lever and working the treadle or hand wheel
substantially as described and shown.
3. The improved arrangement and construction of repeating motion substantially
as hereinbefore described and as illustrated in Sheet 5 of the annexed drawings.
4. In a repeating motion of the indicated nature the combination of the indicating

page_text: needles grooved cam and peg and star wheels with the indicated gearing and parts
whereby I obtain a positive driving connection between the pattern cards and all
other parts of the loom with the objects and substantially as described and shown.
Dated this 14th day of October 1891.
DUTTON & FULTON,
1, St. James' Square, Manchester, Agents.