IMPROVEMENTS IN MACHINERY OR APPARATUS FOR PRODUCING DRAW AWD BAKAR WEARINGS IN ROPRIN NET OR TWIST LACE MACHINES
Year: 1867

page_text: LETTERS PATENT to Thomas Wright and Isaac Fox, both of the Town
and County of the Town of Nottingham, Lace Manufacturers, for the
Invention of "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR PRODUCING
DRAW AWD BAKAR WEARINGS IN ROPRIN NET OR TWIST LACE MACHINES."
Sealed the 1st May 1868, and dated the 4th November 1867.
PROVISIONAL SPECIFICATION left by the said Thomas Wright and Isaac
Fox at the Office of the Commissioners of Patents, with their Petition,
on the 4th November 1867.
We, THOMAS WRIGHT and ISAAC Fox, both of the Town and County of the
Town of Nottingham, Lace Manufacturers, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR PRO-
DUCING PLAIN AND FANCY WEAVINGS IN BOBBIN NET OR TWIST LACE MACHINES."
to be as follows:-
Heretofore in producing plain or fancy weavings in bobbin net or twist
lace machines the weft threads have been traversed to the right or left across
two or more breadths of work in the machine, other threads at each side
being at the same time traversed in like manner.
Now by our Invention we throw or traverse one thread quite across the
machine from side to side either way, such thread forming the weft in the

page_text: whole width of frame in the machine. This thread we cause to traverse by
the following machinery or apparatus:-We employ frames, brackets, or
supports, one at each end of the machine, which form bearings for one or
more bars extending the entire width of the machine. Each bar is formed
with a rack at each end gearing into a toothed wheel on an axle carried by the
frames at either end; on each axle is a larger toothed wheel which gears into
a third wheel on an axle and at the side of a grooved drum or pulley, in the
groove of which lies a bar or strip, which being preferably made of steel [
herein-after call the steel bar, and which is perforated in the centre of its
length and provided with an eye through which a thread is passed. The steel
bar is secured at each end to one of the grooved pulleys, and passes under a
grooved pulley at each side of the whole breadth of the fabric made in the
machine. These grooved pulleys maintain the steel bar steady and in position
as it is wound upon either end of the first-named grooved pulleys by the rack
bar which actuates the wheels and drums at each end of the machine, being
moved to the right or left by a series of levers actuated by a cam or auxiliary
shaft caused to revolve by a toothed wheel gearing into a toothed wheel on
the point bar cam shaft. When the double rack bar has been moved by the.
cam on the 'auxiliary shaft it is supported where required by droppers' operated
by a jacquard; springs at the opposite end of the machine pull or withdraw
the rack bar. When required we employ two or more such sets. of apparatus,
operating on one, two, or more steel bars, each bar throwing one thread; each
thread is supplied by a separate spool or like contrivance; or each bar may
throw one, two, or more threads quite or partly across the machine each way
at or during one or more motions at each such motion where such thread or
threads are taken up by the points; the warp threads and bobbin threads form
the pillars or warps of the fabric or fabrics produced.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Wright and Isaac Fox in the Great Seal Patent
"Office on the 4th May 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME; we, THOMAS
WRIGHT. and ISAAC Fox; both of the Town and County of the Town of
Nottingham, Lace Manufacturers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters.
Patent, bearing date the Fourth day of November, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her

page_text: reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said Thomas Wright and Isaac Fox, Her special licence that we, the said
Thomas Wright and Isaac Fox, our executors, administrators, and assigns,
or such others as we, the said Thomas Wright and Isaac Fox, our
executors, administrators, and assigns, should at any time agree with, and
no others, from time to time and at all tinies thereafter during the term
therein expressed; should and lawfully might make, use, 'exercise, and vend;
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN MACHINERY
OR APPARATUS FOR PRODUCING PLAIN AND FANCY WEAVINGS IN BOBBIN NET OR
TWIST LACE MACHINES," upon the condition (amongst others) that we, the said
Thomas Wright and Isaac Fox, our exécutors or administrators; by an instru-
ment in writing under our, or their, or one of their hands and seals, or under
the hand and seal of one of us or them, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date of the
said Letters Patent. :
.
NOW KNOW YE, that we, the said Thomas Wright and Isaac Fox, do
hereby declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement thereof, reference being had to the accompanying Drawings,
and to the letters and figures marked thereon, that is to say:-
Heretofore in producing plain or fancy weavings in bobbin net or twist lace
machines the weft threads have been traversed to the right or left across two
or more breadths of work in the machine, other threads at each side being at
the same time traversed in like manner.
Now by our Invention we throw or traverse one thread quite across the
machine from side to side either way, such thread forining the weft in the
whole width of work in the machine. This thread we cause to traverse by the
einployment of the following machinery or apparatus: We employ frames,
brackets, or supports, one at each end of the machine, which frames, brackets,
or supports form bearings for one or more bars extending the entire width of
the machine; each of these bars is formed with a rack at each end gearing.
into a toothed wheel on an axle carried by the frames; on each axle is a
larger toothed wheel which gears into a third wheel on an axle and at the side
of a grooved drum or pulley, in the groove of which lies a bar or strip, which
being made by preference of steel we herein-after call the steel bar; this bar
is perforated in the centre of its length and is provided with an eye, through.'

page_text: which a thread is passed. The steel bar is secured at each end to one of the
grooved pulleys, and passes under a grooved pulley at each side of the whole
breadth of the fabric or fabrics made in the machine. These last-named
grooved pulleys maintain the steel bar steady and in position as it is wound
upon either end of the first-named grooved pulleys, being so wound by the
operation of the rack-ended bar which actuates the wheels and drums at each
end of the machine, the racked bar being caused to move to the right or left
by a series of levers actuated by a cam on an auxiliary shaft caused to revolve
by a toothed wheel gearing into a toothed wheel on the point bar cam shaft.
When the double racked bar has been moved by the cam on the auxiliary
shaft it is supported where required by droppers operated upon by a jacquard; a
spring or springs at the opposite end of the machine pull or withdraw the
racked bar. When it is required we employ two or more such sets of appa-
ratus operating on one, two, or more steel bars, or bars by preference made of
steel, each such bar throwing one thread, and each such thread is supplied by
a separate spool or equivalent contrivance, or each steel bar may throw one,
two, or more threads quite or partly across the machine, each or either way
either at or during one or more motions of the machine; at each such motion
where such threads are taken up by the points the warp threads and bobbin
threads form the pillars or warps of the fabric or fabrics produced.
Having thus stated the nature of the said Invention, we proceed more
particularly to explain the manner of performing the same with reference to

page_text: Figure 7 is a side view of a pair of the brackets, to which are screwed the
pieces, in the nicks of which the traversing guide bar slides. Instead of such
nicked pieces being employed only where the brackets are placed to support
the guide bar the guide bar may be supported for the whole of the distance
between the apparatus at each end of the machine by employing two bars of
the required length and of the same shape in section as the pieces seen at
Figure 7 a portion of one of such bars is shown screwed to one of the front
brackets at Figure 8.
Figures 9, 10, and 11 show three cams the full size, which cams are
hereafter referred to.
The apparatus placed at each end of the machine is of the same construc-
tion but reversed, so that the description of one apparatus will suffice for both
of them.
i
In Figures 1 and 2 A, A, are end standards connected together by top,
intermediate, and lower tie bars B, which support the several parts of the
machine; such machine being of the usual construction, except in respect of
the addition thereto and combination therewith of our improved apparatus ;
C is the warp roller upon which is wound and from which are supplied the
threads which form with the carriage bobbin threads the pillars or warps of
the fabric or fabrics produced; D is the front point bar axle; D¹ the front
-point bar to which the front point leads are secured; D is the back point bar
axle; D³ the back points shown as taken upwards and just below the edge of
the work bar E; F is the work roller upon which the fabric or fabrics are:
wound as fast as produced.
To throw or traverse one thread quite across the machine from side to side.
either way we employ the following apparatus:-H, H, are brackets, see
Figures 4 and 5, one at each end of the machine, which form bearings
for a bar H¹ formed with a rack at each end; each of these racks gears into
a toothed wheel H2 placed upon the axle and by the side of a larger wheel H³
toothed upon the whole of its circumference, part of the teeth only being
shown; this wheel H³ gears into a third wheel which is upon the same axle
as a grooved drum or pulley H*, in the groove of which lies a bar or strip I,
made by preference of steel; this bar lies at right angles to the usual bars K
which are employed in bobbin net or twist lace machines, which said bars are
moved to the right in the usual manner by the jacquard according to the pattern
required at (in this instance) the right end of the machine, and by springs K¹
attached to the left end of the bars they are moved to the left. The jacquard
here mentioned, and to which reference will be made herein-after, is of the
usual construction, and is not shown in the Drawings, but movement is com-

page_text: municated thereto by a wheel on the end of the front driving shaft G of the
machine, which wheel gears into a like wheel upon the shaft G₁ of the
jacquard. The bar I is perforated in the centre of its length and provided
with an eye, through which a thread is passed; this bar is secured at each
ênd. to one of the grooved pulleys, and it also passes under a pair of flanged
pulleys at each side of the whole breadth or breadths of the fabric or fabrics
made in the machine; these flanged pulleys L are placed between the comb
bars at a part beyond the termination of the combs and at such a height that
the bar I will traverse below the carriages sliding in such combs as the said
bar or strip is traversed to the right or left by being wound upon one or other
of the grooved pulleys H, being so wound by the operation of the rack-ended
bar H which actuates the wheels and grooved pulleys, the racked bar being
caused to move to the right by a stud in the lower end of a lever H* taking
into a notch in a lever He hinged to one end of the rack bar; this lever is
actuated by the cam H' upon an auxiliary shaft, which shaft is caused to
revolve by means of a wheel on the said shaft gearing into a wheel on the
point bar cam shaft H³. When the racked bar has been moved to the right
by the operation of the cam H7 the notch nearest the outer end of the lever
He falls upon the end of a lever H, by which it is held stationary until it is
required to traverse the bar I to the left, at which time when the greatest
throw of the cam H' is holding the racked bar up the lower end of the lever
His depressed by the jacquard operating upon the upper end of the lever
through the rod. Ho, the lever H being pulled upon again by the spring
shewn attached to it. The bar I is traversed to the left by being attached at
its left end to the upper end of a rocking lever I which is pulled to the left
by springs attached. to it, their other ends being attached to the wall or other
support. The bar I remains stationary when traversed to the left end, the
required number of motions by the lever H being raised up sufficiently high to
allow the notch in the lever to stand clear of the stud in the lower end of the
lever Hs; when this lever is rocked up by the cam H' the lever H which is held
down by a spring is raised, as above mentioned, by the inner end of a lever
which is moved by the jacquard through the rod H. To the bracket H
is secured at its upper end. a short vertical arm which supports a series of
levers N. To the lower end of one of these levers is attached a spring N2, and
also a wire N³, which is continued to the apparatus at the other end of the
machine; this wire is also attached to. the lower end of a lever which is
operated by a cam N, except at such time as the lever is held clear of the
cam by a wire N* attached to the lower end of the lever which is moved to
the right by the Jacquard; this lever (except when held off by the jacquard)

page_text: is held on to the cam by a spring attached to the left end of the wire N³. The
inner lever N¹ has one end turned at a right angle to its length, the lower
side of such end being cut to an incline, so that when the lever is in the
position shewn in Figure 4 the inclined end will hold the thread down which
is traversed by the bar I until the carriages have attained their extreme throw,
when the lever N¹ being raised will release the thread, which will pass up
above the carriages and the points of one of the point bars will lift such
thread the remainder of the distance up to the work bar E, the slack of the
traversing thread being taken up in the manner following:-The thread
which is traversed to the right or left by the bar I is supplied from a spool O,
from which it passes through the loops or eyes which are attached to wires
secured in a rocking lever 0¹; these wires pass between a series of spools or
bobbins O which are covered with cloth or other convenient material, and
after having passed over the upper spool the thread is passed through an
eye in the end of a wire O³, then through the eye of a guide above such
wire, and thence to and through the eye of the steel bar I or traversing guide
bar. The lever O¹ is held to the left by a spring attached to it, and also
attached to the set screw of one of the brackets, and when the lever is so held
the thread can pass freely through the eyes in the end of the wires, except when
the lever O¹ is moved to the right by the cam M moving a lever, to the lower
end of which is attached a wire 04, which wire is also attached to the lever O¹.
To the lower end of the lever moved by the cam M is secured another wire
M¹, by which wire the lever is held clear of the cam M by the jacquard, and
while thus held the thread supplied to the traversing bar is held tight by the
wires attached to the lever O¹ pulling the said thread on to the surface of the
cloth or other convenient material on the spool O2, the slack of the thread
being taken up by the falling of the wire.
Having described the several movements of the several parts of the
apparatus, the combined movements of the apparatus will be as follows:-
The machine having made the required number of motions (the number of
motions required depending on the pattern being made) the traversing thread
is thrown across the machine during the last motion, and while the carriages
are at their extreme outward throw the thread traversed by the guide bar
I is liberated by the cam N, and the slack of the thread is taken up by the
falling of the wire O³, the thread being held tight by the tension apparatus
during the falling of such wire, the movements of the machine being
repeated.
Having now described the nature of our said Invention, and in what manner
the same may be performed, we declare that we claim the arrangement

page_text: and combination of parts constituting the improved apparatus herein-before
described.
In witness whereof, we, the said Thomas Wright and Isaac Fox, have
hereunto set our bands and seals, this Second day of May, in the year
of our Lord One thousand eight hundred and sixty-eight.
Witness,
GEO. JON. ROBINSON,
"Patent Office,
Nottingham.
ISAAC FOX.
(L.B.)