Year: 1895

page_text: Date of Application, 31st Dec., 1895
Complete Specification Left, 12th Feb., 1896-Accepted, 14th Mar.,
1896
A communication from abroad by WILLIAM FRANKLIN DRAPER, f Hopedale,
in the County of Worcester and State of Massachusetts, United States of
America, Manufacturer.
I ALFRED GEORGE BROOKES of 55 and 56 Chancery Lane, in the County of
London, Chartered Patent Agent, do hereby declare the nature of this invention to
be as follows:-
This invention has for its object the production of an improved warp stop
mechanism.
In carrying out my invention as communicated to me by my foreign corre-
spondent employ a loom having a lay provided with a reed, and harness to form
sheds, of a series of warp detectors located between the reed and the harness,
a vibrator to engage a dropped detector, and a loom stopping member controlled
by the vibrator whereby the dropping of a detector may be the more readily
observed and the warp repaired.
Each warp detector has two slots therein, the uppermost slot receiving a bar to
support the detectors, and the lowermost slot the warp detectors, the said detectors
being located between the reed and the harness; there being a vibrator to engage
a dropped detector; and a loom stopping mechanism controlled by the vibrator,
whereby the dropping of a detector may be the more readily observed and the warp
repaired.
I also use a vibrator carried by the lay to co-operate with detectors which are
dropped by the breaking of a warp thread, a feeler, a dagger, a dagger carrier,
and a shipper handle adapted to be struck by the dagger carrier to effect the
stopping of the loom, the dagger carrier being turned backwardly during its
operation of releasing the shipper handle and resetting the vibrator to again put it
into proper operative position.
The vibrator co-operates with detectors which are dropped by the breaking of a
warp thread, a locking device holds the dagger carrier frictionally in its extreme
position.
This invention has reference to warp stop apparatus in looms for weaving, and is
an improvement upon that represented in the Specification of Alfred George
Brookes left at the Patent Office Sept. 3, 1895, and represented in Letters Patent
No. 16432 for 1895. In that Patent the detectors, which are raised by the warp
threads in the formation of the shed and which drop in case of breakage of any of
the threads in the upper plane of the shed, are located back of the reed and of the
shed forming or harness mechanism; but in this invention, in order that the
attendant can readily see any dropped detector, due to warp breakage, and thereby
so locate it to the more readily repair the warp, the said detectors are located in
front of the harness and between the said harness and the reed, so that it is
unnecessary for the attendant to look through the harness to discover the dropped
detector.
By locating the detectors between the reed of the lay and the harness, a large
number of harnesses may be used in the space between the detectors and the lease

page_text: rods, whereas if the detectors were placed back of the harness a change in the
number of harnesses would necessitate re-arrangement and resetting of the
detectors and their co-operating devices.
The detectors herein shown are of novel construction, in that they have two
slots, the longer slots receiving the warp threads, and the shorter slots bars upon
which the said detectors are strung, the said bars being located above the plane of
the shed, so as not to in any way interfere with the formation of the shed.
In this invention the dropped detector will encounter or be engaged by a
vibrator, and the movement of the latter will be so arrested that it will be turned
and cause a feeler moving with it to act through a dagger carrier to lift a dagger
and cause it to release a shipper handle and effect the inovement of a belt shipper
to stop the loom at the forward beat of the lay.
The front end of the dagger is lifted by the dagger carrier as the lay completes
its back stroke, and the force of the blow of the dagger against the shipper handle
is such that the dagger carrier is turned back far enough to enable a finger forming
part of it to act on the feeler and reset the vibrator so that when the loom is again
started the dropped detector having been lifted the vibrator will be in its proper
position.
The dagger carrier has co-operating with it a locking device to hold in
frictionally in its extreme positions.
The loom frame has a crank or lay shaft and fast and loose pulleys, to receive
a belt under the control of a suitable belt-shipper; the lay carrying a reed, with
reed-cap; and the whip-roll and the shedding mechanism may be all as common
in looms.
A depending bracket is secured to the back of the lay at each end thereof, to
form bearings for the projecting journals of a vibrator support extending below
the lay the length of the reed, and to which is secured, a vibrator which may be a
flat plate extended upwardly above the support rearwardly flanged.
On the projecting end of one of the journals is secured, a hub provided with a
curved feeler and having a laterally bent depending toe to form a detent adapted
at times to bear against the bracket and limit the rearward movement of the
vibrator.
A plate or web is extended across the loom between the harnesses and the rear
end of the path of the lay, the ends of the said plate or web may be secured to
or form part of the inwardly bent and downturned ends of standards preferably
adjustably attached to the inner sides of the parts of the frame.
The bosses on the front side of the web support a considerably narrower plate
opposite but separated from the upper portion of the web, said web and narrow
plate forming the back and front of the detector guide, open at top and bottom,
the front of the guide being open at its lower portion, to normally permit the
flanged top of the vibrator to enter the lower part of the guide.
In this guide located between the harness and the lay, are placed a series of
detectors each detector being herein shown as composed of a flat strip or piece of
metal having two slots or openings therein, the detectors being placed side by
side in the guide and laterally movable therein.
A support, as a flat bar, is extended through the slots in the series of detectors
to prevent them from falling entirely out of the guide, the said support being
secured at its ends to arms attached to the standards the height of the support
and the length of the slots in the detectors being so arranged that the detectors
may be raised out of the path of the vibrator or dropped thereinto, according to
circumstances.
The flat sides of the detectors are adjacent in the guide, and they are adapted
to be readily moved up and down therein, the lower part of the front and
back longitudinal edges of the detectors resting against the plate and web
respectively.
The number of detectors used depends upon the number of warp threads, aud
also upon the number of threads which will be led through the slot in and to

page_text: cooperate with each detector, the detectors being located between the lay
and the harnesses of the shed-forming devices, which may be of any usual
construction.
In practice the warps contained on a warp-beam or equivalent device will be
led forward over the whip roll around the lease rods and to the harnesses.
After passing through the eyes of the heddles or harnesses the warp threads
will be led through the slots or openings in the detectors, passing thence between
the dead spaces of the reed and to and over the breast-beam.
The length of the slots is such that the warp threads therein may cross each
other and be fully opened or shed below the support.
Two warp threads or more, may be used in each detector slot according to the
particular class of work done, provided the movement of the harnesses is such
that one thread at a time in each group will be raised into the upper plane of the
shed during its formation, there being as many harnesses as there are threals in
each group, the inactive threads remaining in the lower plane of the shed.
In the formation of the sheds the active warp thread in each group, as it rises
into the upper plane of the shed, acts upon its particular detector at the upper
end of the slot, to lift the detector so that its lower end is above the upper edge
of the vibrator, so that when the vibrator is moved to the rearmost end of its
path of movement by the backward movement of the lay, the said vibrator can
move freely into the lower part of the detector guide the loom then running
properly.
Should an active warp thread about to be lifted into the upper plane of the
shed slaken or break, its detector will not be lifted, and the lower end of the
detector will stay down in the path of movement of the vibrator.
A dropped or depressed detector acts to turn the vibrator on its journals towards
the lay thereby depressing the feeler.
The said feeler is adapted to co-operate at such time with a finger extended
into the path of movement of the feeler and forming part of a hub adjustably
secured by a set screw to a rock-shaft mounted in ears on a stand secured to the
front of the lay at one end thereof, the rock-shaft having a collar thereon between
the ears, and a spring is interposed between the collar and the ear to normally
move the shaft longitudinally.
The ear extends below and beneath the lay and its outer side has therein two
slightly separated depressions or pits concentric to the rock-shaft in the path of
and adapted to be entered, the one or the other, by a lateral lug or projection on
the adjacent inner side of an arm the hub of which is fast on the end of the rock-
shaft projecting beyond the ear.
The spring maintains the lug pressed against the outer side of the ear in one or
the other of said depressions according to the angular position of the rock-shaft
forming a friction locking device for said shaft.
A short arm extends downwardly from the hub and is straddled by the forked
end of a dagger pivoted to the arm and having on its underside a stop to bear
against the extended tip of the arm and thereby limit the downward movement of
the dagger, the tip and stop supporting the dagger.
The ear is cut away to avoid interference with the inner end of the dagger and
the latter is preferably notched at its outer end, to at times engage a preferably
adjustable collar on the spring like releasing lever or shipper handle of the
stopping mechanism, of any usual and well known construction the said lever
when the loom is running entering a notch in a holding plate connected to the
breast beain of the loom all in usual manner. The dagger is bevelled between its
forked ends, to permit it to turn upwards on its pivot for a short distance.
The finger, the rock-shaft to which it is attached and the arm having the tip
constitute what is herein designated as the dagger carrier and the arm to engage
the recesses under the action of springs as the locking device.
When the loom is running properly the friction locking device holds the rock-
shaft and its attached parts in inoperative position, the path of movement of the

page_text: outer end of the dagger being below the collar on the releasing lever when the lay
is forward.
The finger at such time bears against the feeler and the vibrator and its flange
is free to enter the detector guide in the back stroke of the lay all of the detectors
being lifted.
A dropped detector, however, will encounter the flange of the vibrator, the web
supporting the rear edge of the detector wlien the lay moves back, and the vibrator
will be turned depressing the curved feeler as described.
The depression of the feeler turns the finger thereby partially rotating the rock-
shaft withdrawing the lug from the depression in the ear and moving it into the
depression the spring permitting sufficient longitudinal movement of the rock-shaft
for such purpose.
This rotative movement of the rock-shaft elevates the outer end of the arm
causing the tip to act against and lift the dagger the said parts assuming a position
such that the forward movement of the lay will bring the dagger into engagement
with the stop of the releasing lever or shipper handle and knock it out from its
usual holding notch thus permitting the lever to fly outwardly in usual manner and
move a shipper lever and cause it to ship a belt and stop the loom in usual
manner.
It will be seen that the connections between the detectors and the stopping
mechanism will be moved into operative position at the first back stroke of the
lay after a detector is dropped, and that the next forward stroke of the lay causes
the stopping mechanism to stop the loom.
All the intervening devices which thus control the stopping mechanism by the
position of the vibrator are carried by the lay, and are very simple and efficient,
as well as rapid, in their operation.
The web is preferably grooved longitudinally in its inner face to receive therein
a metal strip milled along its front side, which projects slightly beyond the face of
the web, to aid in keeping the detector from being twisted when acted on by the
vibrator.
The support prevents any of the detectors from falling out of the bottom of the
guide, in case all the threads passed through its slot or opening should break, and
in case of a break the attendant can move the detectors laterally at each side of
the dropped detector the more readily to lift it and connect the ends of the broken
thread, or remedy the defect therein if due to slackness.
The dagger has its front end lifted into position to strike the projection as the
lay completes its back stroke, and as the lay is again moved forward the dagger
strikes the said projection but the force of the blow of the dagger against the
projection is sufficient to first cause the movement of the dagger to be arrested
long enough to effect the turning of the rockshaft far enough to enable the finger
in turn to act on the feeler and reset the vibrator.
The latter, in the forward movement of the lay having retired from the dropped
detector, and the vibrator having been reset, the further movement of the lay and
dagger knock the lever out of its usual holding notch.
The loom having been stopped, the operator lifts the dropped detector and
mends the warp, and when the lay moves back again the stopping mechanism is
in proper position to act again without any necessity for the attendant to pay any
attention to it.
I may incorporate with the loom containing my improvements any well known
form of mechanism for automatically effecting the stopping of the loom or to
transfer the driving belt from the fast to the loose pulley.
By using separate slots in the detectors for the support and for the warp
threads, I obviate all chance of the threads and support interfering the one with
the other.
By locating the detectors between the lay and the harness I can use a large
number of harnesses in the space between the detectors and the lease rods.
If the detectors should be placed back of the harnesses, it is evident that any

page_text: change in the number of harnesses would necessitate re-arrangement and resetting
of the detectors and their co-operating mechanism.
Dated the 31st day of December 1895.
WM. BROOKES & SON,
55 and 56 Chancery Lane, London, Agents for the Applicant.
Improvements in Warp Stop Apparatus for Looms.
A communication from abroad by WILLIAM FRANKLIN DRAPER, of Hopedale,
in the County of Worcester and State of Massachusetts, United States of
America, Manufacturer.
I ALFRED GEORGE BROOKES of 55 and 56 Chancery Lane, in the County of
London, Chartered Patent Agent, 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 has for its object the production of an improved warp stop
mechanism.
In carrying out my invention as communicated to me by my foreign correspondent
I employ a loom having a lay provided with a reed, and harness to form sheds, of
a series of warp detectors located between the reed and the harness, a vibrator to
engage a dropped detector, and a loom stopping member controlled by the vibrator
whereby the dropping of a detector may be the more readily observed and the
warp repaired.
Each warp detector has two slots therein the uppermost slot receiving a bar to
support the detectors, and the lowermost slot the warp detectors, the said detectors
being located between the reed and the harness there being a vibrator to engage a
dropped detector; and a loom stopping mechanism controlled by the vibrator,
whereby the dropping of a detector may be the more readily observed and the
warp repaired.
I also use a vibrator carried by the lay to cooperate with detectors which are
dropped by the breaking of a warp thread, a feeler, a dagger, a dagger carrier,
and a shipper handle adapted to be struck by the dagger carrier to effect the
stopping of the loom, the dagger carrier being turned backwardly during; its
operation of releasing the shipper handle and resetting the vibrator to again put.
it into proper operative position.
The vibrator cooperates with detectors which are dropped by the breaking of a
warp thread, a locking device holds the dagger carrier frictionally in its extreme
position.
This invention has reference to warp stop apparatus in looms for weaving, and
is an improvement upon that represented in the Specification of Alfred George
Brookes left at the Patent Office September 3rd 1895, and represented in Letters
Patent No. 16432 for 1895. In that Patent the detectors, which are raised by the
warp threads in the formation of the shed and which drop in case of breakage of
any of the threads in the upper plane of the shed, are located back of the reed and
of the shed forming or harness mechanism; but in this invention, in order that
the attendant can readily see any dropped detector, due to warp breakage, and
thereby so locate it to the more readily repair the warp, the said detectors are
located in front of the harness and between the said harness and the reed, so that
it is unnecessary for the attendant to look through the harness to discover the
dropped detector.
By locating the detectors between the reed of the lay and the harness, a large

page_text: rods, whereas if the detectors were placed back of the harness a change in the
number of harnesses would necessitate rearrangement and resetting of the detectors
and their cooperating devices.
The detectors herein shown are of novel construction, in that they have two
slots, the longer slots receiving the warp threads, and the shorter slots bars upon
which the said detectors are strung, the said bars being located above the plane of
the shed, so as not to in any way interfere with the formation of the shed.
In this invention the dropped detector will encounter or be engaged by a
vibrator, and the movement of the latter will be so arrested that it will be turned
and cause a feeler moving with it to act through a dagger carrier to lift a dagger
and cause it to release a shipper handle and effect the movement of a belt shipper
to stop the loom at the forward beat of the lay.
The front end of the dagger is lifted by the dagger carrier as the lay completes
its back stroke, and the force of the blow of the dagger against the shipper handle
is such that the dagger carrier is turned back far enough to enable a finger forming
part of it to act on the feeler and reset the vibrator so that when the loom is again
started the dropped detector having been lifted the vibrator will be in its proper
position.
The dagger carrier has cooperating with it a locking device to hold it frictionally
in its extreme positions.
Fig. 1 represents in elevation the front and left hand end of a sufficient portion
of a loom to be understood with my invention applied thereto, the breast beam
and take up roll being omitted.
Fig. 2 is a side elevation thereof, looking to the left, Fig. 1, and partially in
section, showing the harness, the detectors raised by the unbroken lifted warp, and
the lay back, with the vibrator at the rearward end of its path.
Fig. 3, is a similar view of a portion of the mechanism shown in Fig. 2, the lay
being forward, the vibrator, the releasing lever of the stopping mechanism, and
the intermediate connections being shown in normal position by full lines, and by
dotted lines in abnormal position due to a dropped detector.
Fig. 4 is a detail of the connections intermediate the vibrator and stopping
mechanism viewed from the left Fig. 1, in normal position, and
Fig. 5 is a side elevation of one of the detectors enlarged.
The loom frame A, the crank or lay shaft A' therein, having suitable fast and
loose pulleys, not shown, to receive a belt under the control of a suitable belt-
shipper; the lay A² carrying a reed A*; the reed cap A2*; the whip-roll A³, and
the shedding mechanism are and may be all as common in looms.
A depending bracket a is secured to the back of the lay A² at each end thereof,
to form bearings for the projecting journals a¹ of a vibrator support a² extending
below the lay the length of the reed, and to which is secured, as by bolts 5, a
vibrator b, shown as a flat plate extended upwardly above the support a and over-
turned or rearwardly flanged at its upper edge, at ', for a purpose to be
described.
On the projecting end of one of the journals a' is secured, by a set screw 6, a
hub provided with a feeler 3, curved forwards and upwards, and having a laterally
bent depending toe to form a detent adapted at times to bear against the
bracket a and limit the rearward movement of the vibrator b.
A plate or web c, Figs. 1 and 2, in a substantially vertical plane, is extended
across the loom substantially the length of the reed, between the harnesses, and
the rear end of the path of the lay, the ends of the said plate or web being shown
as secured to or forming part of the inwardly bent and downturned ends of
standards e, preferably adjustably attached to the inner sides of the parts A', of
the frame by suitable bolts 7 extended through slots c* iu the standards.
The bosses c² on the front side of the web e support a considerably narrower
plate c³, opposite but separated from the upper portion of the web c, said web and
narrow plate 3 forming the back and front of the detector guide, open at top and

page_text: bottom, the front of the guide being open at its lower portion, as clearly shown, to
normally permit the flanged top of the vibrator to enter the lower part of the
guide.
This guide is located between the harness and the lay, and very near the latter
when in its rearinost position, as shewn in Fig. 2 and in the guide there are placed a
series of detectors d, each detector being herein shown as composed of a flat strip
or piece of metal having two slots or openings d' and d therein, the detectors
being placed side by side in the guide and laterally moveable therein.
A support d*, shown as a flat bar, is extended through the slots d¹ in the series
of detectors to prevent them from falling entirely out of the guide, the said
support being secured at its ends to arms c attached to the standards c', the height
of the support and the length of the slots d'in the detectors being so arranged
that the detectors may be raised out of the path of the vibrator bor dropped
thereinto, according to circumstances.
The flat sides of the detectors are adjacent in the guide, and they are adapted to
be readily moved up and down therein, the lower part of the front and back
longitudinal edges of the detectors resting against the plate c³ and web c
respectively.
The number of detectors used depends upon the number of warp threads and
also upon the number of threads which will be led through the slot d² in and to
cooperate with each detector, the detectors being located between the lay and the
harnesses h, ', of the shed-forming devices, not shown, and which may be of any
usual construction.
In practice the warps contained on a warp-beam or equivalent device D, Fig. 2,
will be led forward over the whip roll A³ around the lease rods and l, and to the
harnesses, two harnesses only being herein shown.
After passing through the eyes of the heddles or harnesses the warp threads
will be led through the slots or openings d in the detectors, passing thence
between the dead spaces of the reed A* and to and over the breast-beam.
The length of the slots d² is such that the warp threads therein may cross each
other and be fully opened or shed below the support dx, as shown in Fig. 2, and
while I have herein shown two warp threads in each detector slot d, it will be
understood that more may be used according to the particular class of work done,
provided the movement of the harnesses is such that one thread at a time in each
group will be raised into the upper plane of the shed during its formation, there
heing as many harnesses as there are threads in each group, the inactive threads
remaining in the lower plane of the shed.
In the formation of the sheds the active warp thread in each group, as it rises
into the upper plane of the shed, acts upon its particular detector at the upper end
of the slot d, to lift the detector so that its lower end is above the upper end of
the vibrator b, so that when the vibrator is moved to the rearmost end of its path
of movement by the backward movement of the lay, the said vibrator can move
freely into the lower part of the detector guide, as shown in Fig. 2, the loom then
running properly.
Should an active warp thread about to be lifted into the upper plane of the shed
slacken or break, its detector will not be lifted, and the lower end of the detector
will stay down in the path of movement of the vibrator b.
A dropped or depressed detector acts to turn the vibrator on its journals towards
the lay, as shown by dotted lines Fig. 3, thereby depressing the feeler b³.
The said feeler is adapted to co-operate at such time with a finger e extended
into the path of movement of the feeler and forming part of a hub e' adjustably
secured by a set screw 8 to a rock-shaft ex mounted in ears f, f¹, on a stand f
secured to the front of the lay at one end thereof, the rock-shaft having a collar e
thereon between the ears, see Fig. 1, and a spiral springs is interposed between
the collar a and the ear fas herein shown, to normally move the shaft e longi-
tudiually to the right, viewing Fig. 1.
The ear extends below and beneath the lay, as shown in Figs. 2, 3 and 4, the

page_text: outer side of said ear having therein two slightly separated depressions or
pits f, concentric to the rock-shaft ex, see Fig. 4, in the path of and adapted
to be entered, the one or the other, by a lateral lug or projection on the adjacent
inner side of an arm f³, the hub f of which is fast on the end of the rock-shaft ex
projecting beyond the ear f
The spring s maintains the lug pressed against the outer side of the ear f
in one or the other of said depressions according to the angular position of the
rock-shaft ex. forming a friction locking device for said shaft.
A short arm extends downwardly from the hub f, and is straddled by the
forked end of a dagger g pivoted to the arm at f8 and having on its under side a
stop to bear against the extended tip of the arm and thereby limit the
downward movement of the dagger, the tip and stop normally supporting the
dagger in full line position Fig. 3, and as also shewn in Figs. 1, 2 and 4.
The ear is cut away at 10 to avoid interference with the inner end of the
dagger g, and the latter is preferably notched at its outer end, as at g², to at times
engage a preferably adjustable collar k' on the spring like releasing lever or shipper
handle of the stopping mechanism, of any usual and well known construction,
the said lever when the loom is running entering a notch, in a holding plate
connected to the breast beam of the loom all in usual manner.
As shown by dotted lines Figs. 1 and 4, the dagger is bevelled at g³ between its
forked ends, to permit it to turn upwards on its pivot f8 for a short distance.
'
The finger e, the rock shaft ex to which it is attached and the arm 7, having the
tip constitute what is berein designated as the dagger carrier and the arm f
to engage the recesses f² and ƒ³ under the action of the spring s as the locking
device.
3
When the loom is running properly the parts are in the position shown by full
lines Figs. 1 and 3, the friction locking device holding the rock-shaft and its
attached parts in inoperative position, the path of movement of the outer end of
the dagger g being below the collar on the releasing lever k when the lay is
forward, see Fig. 3.
The finger e at such time bears against the feeler and the vibrator b and its
flange b' is free to enter the detector guide in the back stroke of the lay, as in
Fig. 1, all of the detectors d being lifted.
A dropped detector, however, will encounter the flange of the vibrator, the
web e supporting the rear edge of the detector when the lay moves back, and the
vibrator will be turned into dotted line position, Fig. 3, depressing the curved
feeler as described..
9.
The depression of the feeler turns the finger e into its dotted line position,
thereby partially rotating the rock-shaft ex, withdrawing the lug f* from the
depression in the ear and moving it into the depression 3, the spring
permitting sufficient longitudinal movement of the rock-shaft for such purpose.
This rotative movement of the rock-shaft elevates the outer end of the arm /
causing its tip to act against and lift the dagger g, the said parts assuming
thereby the position shown in dotted lines Fig. 3, so that the forward movement of
the lay will bring the dagger into engagement with the stop of the releasing
lever or shipper haudle k and knock it out from its usual holding notch, thus
permitting the lever to fly outwardly in usual manner and move a shipper lever
and cause it to ship a belt and stop the loom in usual manner.
It will be seen that the connections between the detectors and the stopping
mechanism will be moved into operative position at the first back stroke of the lay
after a detector is dropped, and that the next forward stroke of the lay causes the
stopping mechanism to stop the loom.
All the intervening devices which thus control the stopping mechanism by the
position of the vibrator are carried by the lay, and are very simple and efficient, as
well as rapid, in their operation.
The web c is preferably grooved longitudinally in its inner face, as shown in
Figs. 1 and 2, to receive therein a metal strip c20 milled along its front side, which

page_text: projects slightly beyond the face of the web, to aid in keeping the detector from
being twisted when acted on by the vibrator.
The support d prevents any of the detectors from falling out of the bottom of
the guide, in case all the threads passed through its slot or opening d' should break,.
and in case of a break the attendant can move the detectors laterally at each side
of the dropped detector the more readily to lift it and connect the ends of the
broken thread, or remedy the defect therein if due to slackness.
The dagger has its front end lifted into position to strike the projection k¹ as the
lay completes its back stroke, and as the lay is again moved forward the dagger strikes
the said projection k', but the force of the blow of the dagger against the projection
is sufficient to first cause the movement of the dagger to be arrested long enough
to effect the turning of the rock-shaft ex far enough to enable the finger e in turn
to act on the feeler and reset the vibrator.
The latter in the forward movement of the lay having retired from the dropped
detector, and the vibrator having been reset, the further movement of the lay and
dagger knock the lever k out of its usual holding notch.
"
The loom having been stopped, the operator lifts the dropped detector and
mends the warp, and when the lay moves back again the stopping mechanism is in
proper position to act again without any necessity for the attendant to pay any
attention to it.
I may incorporate with the loom containing my improvements any well known
form of mechanism for automatically effecting the stopping of the loom or to-
transfer the driving belt from the fast to the loose pulley.
By using separate slots in the detectors for the support d* and for the warp
threads, I obviate all chance of the threads and support interfering the one with
the other.
By locating the detectors between the lay and the harness I can use a large.
number of harnesses in the space between the detectors and the lease rods.
If the detectors should be placed back of the harnesses, it is evident that any
change in the number of harnesses would necessitate re-arrangement and resetting
of the detectors and their cooperating mechanism.
Having now particularly described and ascertained the nature of the said inven--
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The use in a loom having a lay provided with a reed, and harness to form
sheds, of a series of warp detectors located between the reed and the harness, a.
vibrator to engage a dropped detector, and a loom stopping member controlled by
the vibrator whereby the dropping of a detector may be the more readily observed
and the warp repaired, substantially as described.
2. The use in a loom having a lay provided with a reed, and a harness to form
sheds, of a series of warp detectors, each having two slots therein, the uppermost
slot receiving a bar to support the detectors, and the lowermost slot the warp
detectors, the said detectors being located between the reed and the harness; a
vibrator to engage a dropped detector; and a loom stopping mechanism controlled
by the vibrator, whereby the dropping of a detector may be the more readily
observed and the warp repaired, substantially as described.
3. The use in a loom having a vibrator carried by the lay to cooperate with
detectors which are dropped by the breaking of a warp thread, of a feeler, a
dagger, a dagger carrier, and a shipper handle adapted to be struck by the dagger
carrier to effect the stopping of the loom, the dagger carrier being turned back-
wardly during its operation of releasing the shipper handle and resetting the
vibrator to again put it into proper operative position.
4. The use in a loom having a vibrator carried by the lay to cooperate with
detectors which are dropped by the breaking of a warp thread, of a feeler, a
dagger, a dagger carrier, and a shipper handle adapted to be struck by the dagger
carrier to effect the stopping of the loom, the dagger carrier being turned
B

page_text: backwardly during its operation of releasing the shipper handle and resetting the
vibrator to again put it into proper operative position, and a locking device to hold
the dagger carrier frictionally in its extreme position.
Dated the 11th day of February 1896.
WM. BROOKES & SON,
55 & 56 Chancery Lane, London, Agents for the Applicant.