Improvements in Looms for Weaving, which Improvements consist in Arrangements of Apparatus by Means of which the Loom is Stopped when the Weft Breaks or is Absent.
Year: 1886

page_text: Date of Application, 18th Aug, 1886.
Complete Left, 18th May, 1887.
Complete Accepted, 21st June, 1887.
Improvements in Looms for Weaving, which Improvements consist
in Arrangements of Apparatus by Means of which the Loom is
Stopped when the Weft Breaks or is Absent.
I JOHN DODD of Oldham in the County of Lancaster Machinist do hereby declare
the nature of this invention to be as follows:-
My invention relates to looms for weaving and consists in arrangements of ap-
paratus by means of which the loom is stopped when the weft breaks or is absent.
In carrying my invention into effect I fix at or near the middle of the slay or lathe
a bracket which supports a spindle provided with a boss to which are secured feclers'
constituting a weft fork." Secured to the slay or lathe is a stud mounted upon
which and capable of being turned thereon is a lifting lever one end of which acts
against a projection upon the weft-fork. Below the slay or latho and secured to the
framing of the loom, are brackets which support a shaft capable of being turned in
the said brackets. Mounted upon the said shaft are two levers. One of the levers at
times acts upon the lifting lever carried by the slay or lathe. The other lever upon
the said shaft is at times acted upon by a cam fast upon the crank-shaft or any other
shaft, the rotation of which bears a suitable relation to the motion of the crank-shaft.
By means of the cam, levers, lifting lever and projection above referred to the weft-
fork is raised to allow the shuttle to pass when a pick taking place from either end
of the loom. I fix to the slay or lathe above mentioned a stud. Mounted thereon
and capable of being turned is a lever or arm to which is jointed one end of a rod,
drawn in one direction by a spring. The opposite end of this rod passes through a
guide and at times is kept from moving by being against the boss of the weft-fork.
When the loom is at work the feelers of the weft-fork having been raised as above
described to permit the shuttle to pass, the weft-fork after the passage of the shuttle
is by the cam and levers before referred to allowed to descend until arrested by the
weft. In this position the boss of the weft-fork constitutes a. stop and prevents the
rod above-mentioned from being moved longitudinally by the spring previously
mentioned. When the weft is broken or absent the weft-fork not being supported by
the weft will be at liberty to descend into a recess formed in the slay or lathe. Such
descent of the weft-fork will bring a recess formed in the boss of the weft-fork

page_text: opposite the end of the rod before mentioned and thereby allow the said rod to be moved
longitudinally and cause the lever to which the said rod is jointed to engage with a
notch in a slide-bar connected to the ordinary "setting-on handle" and liberate the
same so as to permit the said "setting-on handle" to move the belt by which the loom
is driven, from the fast to the loose pulley and simultaneously bring a brake into
operation to stop the loom.
The lever above mentioned after moving the slide-bar previously mentioned a
sufficient distance is disconnected from such slide-bar by means of an incline.formed
upon a bracket secured to the framework of the loom.
When the loom is again staried the sliding-bar above mentioned will be restored
to its normal position to be again acted upon when the weft breaks or is absent.
In a modification of my invention instead of using one weft-fork as previously
described I employ two weft-forks similar in construction to the one before mentioned.
These weft-forks I place at a distance from each other but within the breadth of the warp.
Each of such weft-forks is actuated in a manner similar to that previously described
in reference to the single weft-fork and each of such weft-forks is capable of acting
by means of suitable rods and levers so that either of the weft-forks may act upon
the lever which in turn acts upon the slide-bar before mentioned.
Dated this Seventeenth day of August 1886.

page_text: Improvements in Looms for Weaving, which Improvements consist
in Arrangements of Apparatus by Means of which the Loom is
Stopped when the Weft Breaks or is Absent.
I JOHN DODD of Oklham 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:-
My invention relates to looms for weaving and consists in arrangements of
apparatus by means of which the loom is stopped when the weft breaks or is
absent.
In carrying my invention into effect I fix at or near the middle of the slay or
latho a bracket which supports a spindle provided with a boss to which are
secured feelers constituting a weft fork."-Secured to the slay or lathe is a stud
mounted upon which and capable of being turned thereon is a lifting lever one end of
which acts against a projection upon the weft fork-Below the slay or lathe and
secured to the framing of the loom are brackets which support a shaft capable of being
turned in the said brackets.
Mounted upon the said shaft are two levers-One of the levers at times acts
upon the lifting lever carried by the slay or lathe-The other lever upon the said
shaft is at times acted upon by a cam fast upon the crank shaft or any other_shaft the
rotation of which bears a suitable relation to the motion of the crank shaft-By means
of the cam, levers, lifting lever and projection above referred to the weft fork is raised
to allow the shuttle to pass when a pick is taking place from either end of the loom-
I fix to the slay or lathe above mentioned a stud-Mounted thereon and capable of
being turned is a lever or arm to which is jointed one end of a rod drawn in one
direction by a spring-The opposite end of this rod passes through a guide and at
times is kept from moving by being against the boss of the weft fork-When the loom
is at work the feelers of the weft fork having been raised as above described to permit
the shuttle to pass, the weft fork is after the passage of the shuttle, by the cain and
levers before referred to allowed to descend until arrested by the weft-In this
position the boss of the weft fork constitutes a stop and prevents the rod above
imentioned from being moved longitudinally by the spring previously mentioned.
When the weft is broken or absent the weft fork not being supported by the weft will
be at liberty to descend into a recess formed in the slay or lathe-Such descent of the
weft fork will bring a recess formed in the boss of the weft fork opposite the end of the
rod before mentioned and thereby allow the said rod to be moved longitudinally and
cause the lever to which the said rod is jointed to engage with a notch in a slide-bar
connected to the ordinary "setting on handle" and liberate the same so as to permit the
said "setting on handle" to move the belt by which the loom is driven from the fast
to the loose pulley and simultaneously bring a brake into operation to stop the loom.
The lever above mentioned after moving, the slide-bar previously mentioned a

page_text: sufficient distance is disconnected from such slide-bar by means of an incline formed
upon a bracket secured to the framework of the loon.
When the loom is again started the sliding bar above mentioned will be restored to
its normal position to be again acted upon when the weft breaks or is absent.
In the drawings hereunto annexed Fig. 1 is an end elevation partly in section and
Fig: 2. a front view of so much of a loom as is requisite to illustrate my invention
and Figs. 3, 4, 5, 6, 7, 8, 9, 10, and 11, show upon a larger scale certain parts shown
in Figs. 1. and 2.-The same letters of reference are applied to corresponding parts
throughout the entire series of figures-Fixed at or near the middle of the slay or
lathe a. and about midway between the selvedges of the cloth is a bracket b. which
supports a spindle c. upon which is a boss -Secured to the boss d. by a screw e. are
feelers constituting a weft fork" -Secured to the slay or lathe a. by means of
the bracket b. is a stud g, mounted upon which and capable of being turned thereon is
a lifting lever h. one end h¹ of which acts upon a part c¹ formed with and projecting
from the spindle c. upon which is mounted the weft fork f
I make the part c¹. and the end of the lifting lever h. of such width that when
the weft fork is raised into the position in which it is indicated in Figs. 1, 2, 4, 5
and 11, the weft fork f. will by means of the part c¹ and end h¹ of the lifting lever h. be
held in position and will be thus prevented from vibrating Secured to the framing j.
of the loom are brackets k. k. which support a shaft 7. such shaft 1. being capable of
being turned in the brackets k. k-Mounted fast upon the shaft l. is a lever m. which
at times acts upon the lower end of a projecting part formed upon the lifting
lever h. Mounted fast upon the shaft l. is a lever . which rests upon and is at times
acted upon by a team o. mounted fast upon the crank-shaft p.-The cam o. being rotated
in the direction indicated by the arrow A. will turn the lever a. in the direction indicated
by the arrow B. the lever n. being turned in the direction opposite to that indicated by
the arrow B. by means of a spring 9. one end of which spring q. is attached to the
lever the other end of such spring 9. being attached to the frame j.
When the loom is at work the movement of the slay or lathe a. will bring the
projecting part in contact with the inclined end of the lever m. which acting upon
the projecting part 2 will by means of the end acting on the part c¹ cause the
woft fork to be raised into the position in which it is indicated in Figs. 1, 2, 4, 5,
and 11, to allow the shuttle D. to pass when a pick is taking place from either end of
the loom Fixed to the slay or lathe a. is a bracket r. which carries a stud³¹.
Mounted upon the stud and capable of being turned thereon is a lever or arms. to
which is jointed one end of a rod t. the opposite end of which passes through a
guide u. formed in a projecting part upon the bracket -The rod t is drawn in the
direction indicated by the arrow E by means of a spring v. one end of which spring r.
abuts against a bracket w. secured to the slay or lathe a. the other end of the said
spring acting against a collar 2 fast upon the rod t. The rod is at times kept from
being moved in the direction indicated by the arrow E by being in contact with the
boss d. of the weft fork f.
When the loom is at work the feelers of the weft fork. having been raised as above
described to permit the shuttle to pass through the shed of the warp the cam o. being
rotated will after the shuttle has passed the weft fork f. cause the lever a to turn in the
direction indicated by the arrow B. thereby turning the lever m. in the direction
indicated by the arrow F and the lifting lever . ing no longer supported will
descend and allow the weft fork f. to descend until it is arrested by the weft. Gas
shown in Fig. 3. The lifting lover h. will descend until a projecting part ³ thereon
arrives against a part or stop . formed on the bracket. When the weft fork f.
rests on the weft and is in the position in which it is indicated in Fig. 3. the boss d
constitutes a stop and prevents the rod t. above mentioned from being moved in the
direction indicated by the arrow E by the spring v.
When the weft G. is broken or absent the weft fork f. not being supported by the
weft G will be at liberty to descend into a recess H. formed in the slay or lathe a. as
shown in Figs. 7 and 10. The descent of the weft fork into the recess H will
bring a recess J. formed in the boss d. opposite the end t of the rod t. and thereby

page_text: allow the rod. to be moved by the spring . in the direction indicated by the arrow E
and cause the lever or arm s. to be turned in the direction indicated by the arrow K
Secured to one of the end frames of the loom is a bracket y provided with pro-
jections y' which act as guides to a sliding bar-In the sliding bar are formed
slots through which pass the projections and by which the sliding-bar is guided
and retained in the proper position the slots permitting the sliding-bar z to be
slidden longitudinally-The sliding-bar z is retained upon the projections by means
of set-screws 1. In one end of the sliding-bar is formed a slot or jaw which
embraces the ordinary setting-on handle 2 of the loom, shewn in section in Fig. 8-
In the sliding-bar z is formed a notch 3 and in the bracket y is formed a recess y² one
part of which constitutes an incline y. When the weft-fork has descended into the
recess H and by so doing brought the recess J in the boss d opposite the end t¹ of
the rod the springe moving the rol in the direction indicated by the arrow E will
bring the lever or arms against the edge of the bracket -The movement of the
slay or lathe a in the direction indicated by the arrow L will then bring the lever or
arms into the recess y² and against the notch 3 formed in the sliding-bar z and the
parts of the lever or arms acting against the notch 3 will cause such sliding-bar z
to be slidden in the direction indicated by the arrow M and by means of the slot or
jaw act upon the setting-on handle 2 so as to unlock or liberate such setting-on
handle 2 from the notch by which it is usually retained and permit it to move the belt
by which the loom is driven from the fast to the loose pulley and simultaneously bring
a brake 4 into operation to stop the loom-While the lever or arms is acting on the
notch 3 a part of the lever or arms will slide against the incline y and when the
sliding-bar has been moved sufficiently to unlock or liberate the setting-on handle
the lever or arms will by means of the incline y be removed out of contact with the
notch 3 and no further movement of the sliding-bar z will take place. During the
further movement of. the slay or lathe a in the direction indicated by the arrow L
the lever or arms will be carried along and in contact with the edge y' of the bracket,
To bring the brake 4 into operation the arrangements to be next described may be
employed. The brake with the parts by which it is connected to the setting-on-
handle 2, form no part of this invention. To one of the end-frames of the loom I
secure a braket 5 provided with a stud 6 carrying a lever 7. To one end of the lever 7
is secured one end of the baud-brake 4. which embraces a pulley 8 upon the driving
shaft 9 of the loom. The other end of the brake 4 is attached to a bracket 10 secured to
a bracket attached to one of the end-frames of the loom. Upon the end 7ª of the
lever 7 is a weight 11, which weight 11 tends to draw the brake 4 into contact with
the pulley 8. An arm 12 is carried at one end upon a pin 13 in a bracket 14 secured
to one of the end-frames of the loom-The end 12 of the arın 12 is connected by a
rod 15 to the lever 7-Secured to the setting-on handle 2 is a part 16 the upper edge
of which at times supports the arm 12-When the setting-on handle 2 is locked and
in the position for keeping the belt by which the loom is driven upon the fast pulley
the part 16 by means of the arm 12 rod 15 and lever 7 keeps the brake 4 from acting
upon the pulley 8 but when the setting on handle 2 moves the belt by which the loom
is driven from the fast to the loose pulley it allows the arm 12 rod 15 lever 7 and
weight 11 to descend and by so doing causes the brake 4 to act upon the pulley S-
When the setting on handle 2 is replaced in the position for again starting the loom it
restores the sliding bar to its normal position to be again acted upon when the
weft G breaks or is absent-The bracket is provided with a projecting part which
limits the movement of the lever or arms in the direction opposite to that indicated by
the arrow K.
y.
In a modification of my invention instead of using one weft-fork as previously
described I employ two weft-forks similar in construction to the one before mentioned-
These weft-forks I place at a distance from each other but within the breadth of the
warp Each of such weft forks is actuated in a manuer similar to the previously
described in reference to the single weft-fork and each of such weft-forks is capable of
acting by means of suitable rods and levers so that either of the weft-forks may act
upon one of the levers which in turn act upon the sliding bar before mentioned-This

page_text: modification of my invention is shown by Figs. 12 and 13 of the drawings hereunto
annexed Fig. 12 being a front view and Fig. 13 an end view of so much of a loom as is
requisite to illustrate this modification of my invention-As many of the parts employed
in this modification of my invention are similar to those above described I shall affix to
such parts the same letters of reference as have above been to the parts corresponding
thereto. To the slay or lathe a I secure two brackets bb* provided respectively with
weft forks ff. Upon the shaft 7 I mount two levers m, m--The lever m operates the
weft fork and the lever m* operates the weft fork f*. Upon a stud I mount two
levers or arms s. s. To the levers is jointed one end of a rod and to the lever s
is jointed one end of a rod t*. The parts of the levers s. s* act upon the sliding
descends in the recess H or H* beneath
bar when the weft-fork for the weft fork
=
it, when the weft thread is broken or absent.
By employing two weft-forks, * placed and operating as above described I cause
the loom to be stopped should the descent of either of the weft forks fail to be arrested
by the weft.
The cam o instead of being mounted upon the crank-shaft p of the loom may be
mounted upon any other shaft the rotation of which bears a suitable relation to the
motion of the crank-shaft.
By the employment of the invention above-described I am enabled on the breakage
or absence of the weft to remove the belt from the fast to the loose pulley immediately
after the weft fork falls into the recess in the slay or lathe and considerably before the
slay or lathe has completed its movement for beating up the weft." By means of
my invention the loop can be stopped before another shuttle is thrown out of the
shuttle box.
I have hereinbefore described the setting-on handle as stopping the loom by moving
the belt from the fast to the loose pulley but I would have it understood that the
invention above described may be readily adapted to act by means of the spring
setting-on handle to disengage conical or other friction apparatus employed for
driving looms.
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. The herein before described arrangements of apparatus by means of which the
loom is stopped when the weft breaks or is absent, constructed arranged and operating
substantially in the manner hereinbefore described in reference to and illustrated in
and by Figs. 1 to 11'both inclusive, of the drawings hereunto annexed.
2. The hereinbefore described arrangements of apparatus by means of which the
loom is stopped when the weft breaks or is absent constructed arranged and operating
substantially in the manner herein before described in reference to and illustrated in
and by Figs. 12 and 13 of the drawings hereunto annexed.
Dated this Seventeenth day of May 1887.
W. T. CHEETHAM,
Agent to the Applicant.