IMPROVEMENTS IN THE MANUFACTURE OF TRAVERSE NET OR LACE ON TWIST LACE MACHINES AND IN APPARATUS EMPLOYED THEREIN
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I ALFRED CHARLES TRAVELL of 4 Prospect Terrace, Alfreton Road in the
Town and County of the Town of Nottingham, Warehouseman do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN THE MANUFACTURE
OF TRAVERSE NET OR LACE ON TWIST LACE MACHINES AND IN APPARATUS
EMPLOYED THEREIN, to be as follows:-
In order to make traverse net or lace on twist lace machines similar or otherwiso
to a traverse bobbin net where the threads traverse from one side of the machine to
the other, from hole to hole of the fabric I'employ a traversing warp and a traversing
guide bar and if necessary a traversing Bley.
The warp is worked from bobbins which have a continuous circulating motion
from end to end of the machine, being caused to travel in a path consisting of two
parallel lines connected at the ends by short curves by which means one half of
the traversing warp is caused to move from left to right of the machine whilst the
other half is caused to transverse from right to left.
The sley and the guide bar have also a similar motion to that above described
and the guide bar will also have a backward and forward motion in order to
produce the twist and pattern required in the class of lace which is being made.
The bobbins carrying the warp threads are placed on supports which are mounted
in an endless chain which is guided and controlled to move or circulate in the
direction above described and such circulating motion is governed by the rate the
traversing threads work in the formation of the net or lace and may be caused
either by a wheel or by a bar operated by a Jacquard.
The circulating steel guide bar is also fixed to an endless chain which is guided
and controlled in its motion in a similar manner to the warp chain bar, and the
backward and forward motion is caused by two bars worked either by wheel or
Jacquard one of such bars causing the forward motion and the other the backward
motion, the said bars being formed with hooks to take into two rows of teeth
formed on the guide bar chain or on ratchet wheels from which motion is .given to
such guide bar chain in one or the other direction as required such teeth being so
formed as to enable the guide bar to be moved exactly in correspondence with the

page_text: gates in the machine according to the gauge thereof, these hooked bars will thus
cause the circulating guide bar to have a circulating motion as also a backward
and forward motion in forming the twist according to the pattern of the net or
lace required.
The warp chain bar may have its circulating motion given thereto by a catch
bar operated by a wheel or Jacquard and taking into teeth formed on the said
chain or on a ratchet wheel communicating motion thereto or by other suitable
means.
In case the gauge of the machine is so fine as not to allow the warp threads from
one row of bobbins to work without becoming entangled I employ a double row
of bobbins for the warp threads or I secure the separation of the warp threads by
the employment of a traversing articulated sley operated to move in unison with
the said warp threads.
,"
By these means I am enabled to produce on twist lace machines a superior class
of either plain or fancy net or lace.

page_text: I ALFRED CHARLES TRAVELL of 4 Prospect Terrace, Alfreton Road in the
Town and County of the Town of Nottingham, Warehouseman do hereby declare
the nature of the said Invention for IMPROVEMENTS IN THE MANUFACTURE OF
TRAVERSE NET OR LACE ON TWIST LACE MACHINES AND IN APPARATUS EMPLOYED
THEREIN and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
In order to make traverse net or lace on twist lace machines similar or otherwise
to a traverse bobbin net where the bobbin threads traverse from one side of the
machine to the other, from hole to hole of the fabric, I employ a traversing warp
and a traversing guide bar; and if necessary a traversing sley.
The warp is worked from bobbins which have a continuous circulating motion
from end to end of the machine, being caused to travel in a path consisting of two
parallel lines connected at the. ends by short curves by which means one half of
the traversing warp is caused to move endwise from left to right of the machine
whilst the other half is caused to traverse from right to left.
The sley and the guide bar have also a similar motion to that above described
and the guide bar will also have a backward and forward motion endwise of the
machine in order to produce the twist and pattern required in the class of lace
which is being made.
The bobbins carrying the warp threads are placed on supports which are mounted
in an endless chain which is guided and controlled to move or circulate in the
direction above described and such circulating motion is governed by the rate the
traversing threads work in the formation of the net or lace and may be caused
either by a wheel or by a bar operated by a Jacquard.
The circulating steel guide bar is also fixed to, or operated by an endless chain
or band which is guided and controlled in its motion in a similar manner to the
warp chain bar, and the backward and forward motion end wise of the machine is
caused by two bars worked either by wheel or Jacquard, one of such bars causing
the forward motion and the other the backward motion, the said bars being formed
with books to take into two rows of teeth formed on the guide bar chain or on
ratchet wheels from which motion is given to such guide bar chain in one or the
other direction as required such teeth being so formed as to enable the guide bar to
be moved exactly in correspondence with the gates in the machine according to the
gauge thereof, these hooked bars will thus cause the circulating guide bar to have
a circulating motion as also a backward and forward motion endwise of the
machine in forming the twist according to the pattern of the net or lace
required.
The warp chain bar may have its circulating motion given thereto by a catch
bar operated by a wheel or Jacquard and taking into teeth formed on the said
chain or on a ratchet wheel communicating motion thereto or by other suitable
means.
In case the gauge of the machine is so fine as not to allow the warp threads
from one row of bobbins to work without becoming entangled, I employ a double
row of bobbins for the warp threads or I secure the separation of the warp threads
by the employment of a traversing articulated 'sley operated to move in unison with
the said warp threads.
By these means I am enabled to produce on twist lace machines à superior class
of either plain or fancy net or lace,.

page_text: to describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a vertical cross section and
Figure 2 is a side elevation partly in section of parts of an ordinary Lever's Lace
Machine with my present Invention applied thereto.
Figure 3 is a plan representing the traversing warp bobbins together with their
supporting and operating parts.
Figure 4 is a plan representing the traversing guide bar and its operating parts
and Figure 5 is a cross section of parts of the latter drawn full size, and Figure 6
is a plan of one link of the chain for carrying the circulating warp showing the
arrangement adopted when employing two rows of bobbins.
In all the Figures like parts are marked with similar letters of reference.
A is the front comb bar and A¹ the back comb bar, each of which has fixed 1
thereto comb bar leads a a.- -B, represents a bobbin and carriage, C the front catch
bar, C¹ the back catch bar, D the front point bar and D¹ the back point bar, eacli of
which has fixed thereto leads of points c c.
E is the work bar and F the work roller.
The above described parts are those of an ordinary Lever's Lace Machine but 2
I would here remark that my Invention is equally applicable to other classes of
twist lace machine whether employed in the manufacture of simple or plain fabrics
or, by employing extra steel or other guide bars, in the manufacture of of the fabrics
with ornamental or fancy designs.
The traversing warp and parts acting therewith are according to my invention 2
arranged and operated in the following or other equivalent manner.
. 1. 1. are the warp bobbins which for the time being, form the front row.
1ª, 1ª, are the warp bobbins which, for the time being, form the back row. These
bobbins are mounted with capability of rotating on pins d d. fixed .rigidly to the
endless supporting and traversing or circulating chain e which latter is supported
at intervals by supports of carried by standards G or in other convenient manner..
At each end of the machine the endless traversing or circulating chain e passes
partly around a toothed wheel H by which it is. further supported and operated
and such wheels H receive a continuous rotary motion by means of a worm
wheel K fixed on the vertical shaft I which is supported in the bracket J and such a
worm wheel K is taken into by and receives motion from a worm (not shown)
operated by any convenient part of the machine.
Each of the warp bobbins 1, 1º, has wound thereon a number of warp
threads M, M and the threads from each bobbin are passed through the holes
in a sley g fixed rigidly to the chain e.
It will be seen that the holes in the sleys are arranged at an incline, this
arrangement is adopted in order to separate the warp threads and prevent their
becoming entangled.
W. W. are springs which in combination with nuts w, w working on the
screwed ends of the pins d, d, are employed for regulating the tension of the warp
threads.
L represents an endless guide bar through the holes in which the warp
threads M, M, are passed. This endless guide bar L is at each end thereof passed
partly around a guide wheel N carried by a bracket which guide wheels are,
capable of adjustment in any convenient manner in order to put sufficient strain
on the endless guide bar L.
The arrangement shown in the drawings for operating the guide bar L, is as
follows.
P is an endless propellor. bar which is provided with pins p which pass. into
corresponding holes formed in the guide bar L.as. also into holes formed in the
4

page_text: supporting and operating wheel R.at one end of the machine and .a. similar
supporting wheel at the opposite end of the machine.
The supporting and operating wheel R is fixed to a vertical shaft. U which is
supported in any convenient, manner and on which are fixed ratchet wheels S. S.
which are capable of being driven in opposite directions by means of ratchet or.
driver rods T. T. which are worked by suitable connections from a Jacquard
apparatus or from a cam wheel according to the class of machine to which my
invention may be applied.
By these means whilst the warp threads are caused to advance in the directions
of the arrows so as gradually to take each thread from one end to the other of the
machine they may also be caused to receive 'n backward or retrograde motion in
order to produce the class of traverse lace desired.
..
Q, Q, are guide rollers at each end of the machine which are employed to guide
the endless propellor bar P from the wheels R to the endless guide bar L.
It will be seen that at the ends of the machine where the warp threads are
carried round the rollers N, the last few gradually get nearer and nearer together,
this will necessitate the employment of a few bobbins at each end of gradually
decreasing gauge.
In many cases this gradual decrease of gauge at the selvages will be of no
importance but if it should be desired to make the fabric of the same gauge at the
selvages as at the other portions, then I arrange the points in the end lead or leads.
in such manner that their outer ends shall be closer and closer together at the ends
of the machine whilst their stems are fixed in the leads at the same gauge as in
the central leads; By these means the points of such end leads will be enabled
to enter between the few closer warps at the selvages and as they advance through
the same they will draw out such warp threads to the same gauge as those of the
centre.
I would here remark that the size and proporations of the various parts may be
modified according to the character of work it is desired to produce, whilst if
desired the endless guide bar L, instead of being formed of an endless steel band as
shown may be formed in sections fixed to an endless chain which latter may have
two rows of teeth formed thereon and be driven by two bars operated by Jacquard
or other means. I do not however confine myself to any particular construction
of parts for carrying and circulating the warp threads, nor to any particular
construction or mode of working the endless guide bar so long as they are arranged
and caused to operate in the manner herein shown and described.
I would further remark that I do not claim the traversing of the warp threads
in small sections to and fro thereby forming a number of narrow pieces of fabric
but my invention relates to the use of a warp traversed from end to end of
machine.
In case the gauge of the machine is so fine as not to allow the warp threads
from one row of bobbins 1. 1° to work without becoming entangled, I employ a
double row of bobbins 1. 1ª for the warp threads as shown at Figure 6 or I secure
the separation of the warp threads by the employment of a traversing articulated
or endless sley operated to move in unison with the said warp threads.
The bobbin threads work in combination with the traverse warp threads to
produce the net or lace by passing backwards and forwards between the warp
threads as the latter are in succession, or in any other order, carried past the same,
and the traversing warp threads operated as herein described may be used in
combination with carriages and bobbins B which have a mere backward and
forward motion, or in combination with carriages and bobbins which have also a
traversing motion as will be well understood.
When using extra guide bars in combination with the endless guide bar L,
I form the guide wheel N, as small as possible consistent with the proper working.
of the guide bar L and if required, I employ extra guide wheels to act on the outer
sides of the endless guide bar L close to the guide wheels N, in order to bring the

page_text: two sides of the endless guide bar L closer together and thereby afford space for
the extra guide bars.
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 manufacture of traverse net or lace on twist lace machines by the employ-
ment of a traversing warp, traversing sleys and a traversing guide bar, acting in
combination with the bobbin threads in manner substantially as herein shown and
described.
2. The combination with any description of twist lace machine of traversing
warp bobbins 1, la fixed to an endless chain e traversing sleys g and an endless
traversing guide bar L, arranged and operated in manner substantially as herein
shown and described and for the purpose stated.
T
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