IMPROVEMENTS IN AND APPLICABLE TO BOBBIN NET OR TWIST LACE MACHINES
Year: 1884

page_text: I EDWARD COPE of Lenton Firs Lenton Nottingham in the county of the same
name lace Manufacturer do hereby declare the nature of my said invention for
IMPROVEMENTS IN AND APPLICABLE TO BOBBIN NET OR TWIST LACE MACHINES,
to be as follows:-
The object of the invention is to provide or fit bobbin net or twist lace machines
with apparatus acting in combination with the usual or any suitable jacquard
appliances to vary the motions of the warp and weft or spool threads so as to
produce at pleasure variations in the thickness of the parts and the pattern woven.
In carrying my invention into practise I make use of one or more bars made or
fitted with teeth or points at regular or irregular intervals as desired I fit one or
more of such bars in front of or behind or both in front of and behind the warp
and weft or spool threads above the guide bars and I give transverse or transverse
and longitudinal motions to the said bars at the desired times previous to the
action of the intercepters and jacquard apparatus by means of cams or suitable
mechanism.
The action of the apparatus is as follows-When transverse motion alone is
given to the said bars the teeth or points are caused to enter between the warp
and weft or spool threads or both when both transverse and longitudinal motions
are given to the said bars the teeth or points enter between and move longitudinally
more or less the desired threads of the warp and weft.

page_text: I EDWARD COPE of Lenton Firs Lenton Nottingham in the county of the same
name Lace Manufacturer, do hereby declare the nature of the invention for
IMPROVEMENTS IN OR APPLICABLE TO BOBBIN NET OR TWIST LACE MACHINES
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
The object of the invention is to provide or fit bobbin-net and twist-laco
machines with apparatus acting in combination with the usual or any suitable
jacquard appliances to controll the motion of the warp and weft or spool threads, so
as to produce at pleasure variations in the thickness of the lace and the pattern
woven.
In carrying my invention into practise I make use of one or more special bars,
made or fitted with teeth points or interceptors at regular or irregular intervals as
desired. I fit one or more of such bars in front of or behind or both in front of
and behind the warp and weft or spool threads, above the guide bars; and when it
is desired to modify the weaving, I give transverse or transverse and longitudinal
motions thereto so as to cause the points of the said special bars to enter between
and act on the threads, before the guide bars come to rest and previous to or after
the Jacquard intercepters have made their selection. Cam or suitable mechanism
for giving reciprocating motion is used to actuate the special intercepter bars.
DESCRIPTION OF THE DRAWINGS.
Fig 1 is a transverse view and fig 2 a plan of so much of a bobbin net or twist-
lace machine as is necessary to illustrate one arrangement of apparatus under my
invention. Fig 3 is a ditail view of the lever 22 1 spools, 2 warp beam, 3 spool
threads, 4 warp threads; -5, 6 guide bars; 7, 8 points bars, 10 combs, 11 carriages,
12 Jacks the above parts are of ordinary construction and are actuated by any
usual or suitable gear or appliances; 13 special intercepter bar provided with
points 14; this bar is carried by links 15 jointed to links 16 at 17 the links 16
being jointed at 18 to the brackets 19 secured to the frame of the machine. The
above construction in which the joints 17 and 18 are at right angles to each other
allows of both transverse and end motions being freely given to the special inter-
cepter bar. End motion is imparted to the bars 13 by means of the cam and lever
mechanism in the manner usually employed for guide bars, or in any other con-
venient way. Transverse motion is given to the said bar 13 by means of the cam 20
on the shaft 21 acting through the bell crank lever 22 and links 23. 24 truck or
roller on lever 22. The arin 22º of the lever 22 is in two pieces, which are carried
on the stud 25 and are connected together by the pin 26. 27 spring for keeping
the pin 26 in locking position, 28 latch actuated by a spring 29 to hold the pin 26
out of action, when required: 30, 31 strings or cords connecting the pin 26 and
latch 28 with the Jacquard apparatus. The action of the parts 26 and 28 may be
reversed.

page_text: To
The action of the apparatus is as follows:-The motions of the bars 5, 6:
Jacks 12, bobbin carriages 11, and points bars 7 and 8 are conducted in the usual
way and lace is woven of the desired pattern as is well known. When it is desired
to modify the weaving, the apparatus discribed from 13 to 31 is used in com-
bination with the ordinary parts of the bobbin net or twist lace machine.
reduce the thickness of any part of the weaving; the bar 13 with intercepters in
the required positions has transverse motion given to it so as to cause the inter-
cepters to enter between the warp and spool threads before or after the jacks have
entered and been selected, and before the guide bars have reached the end of their
motions, thereby preventing the threads acted on from moving as far as they would
otherwise be moved by the guide bars. At other times this apparatus may be
applied to cause the spool or warp threads to move in a manner independent of the
selecting action of the jacks and guide bars. To do this both end and transverse
motions are given to the bar 13 and intercepters 14. The intercepter bar when
end motion is given to it, may be arranged to give additional motion to all or any
of the warp or spool threads according to the number and position of the inter-
cepters. The apparatus shown is arranged to increase or diminish the thickness of
the weaving or give extra ornamental effects to the pattern at pleasure The
strings 30, 31 are pulled alternately by the Jacquard apparatus at the required
times so as to throw the intercepter bar gear into and out of action, by the con-
nection and dis-connection of the lever arms 22, 22. When the gear is in action
the bar 13 receives transverse motion by the rotation of the cam 23 so as to cause
the intercepters to enter between and leave the threads at the desired times The
said bar may also have imparted to it end motion or not as it is desired to weave
thinner or thicker, or to produce enriched effects.
To produce some of the effects above mentioned the special interceptor bar may
be placed at the back of the machine above the jacks instead of in the front, or
such bars may be used both at the back and front.
Interceptor bars under my invention may be employed with machines having
more than one set of warp or spool threads.
I would have it understood that I do not confine myself to the precise mechanism
herein described as many modifications thereof can be made.
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
The combination with bobbin net or twist lace machines of a special bar or bars
fitted with teeth points or interceptors and actuated substantially as specified for
the purposes set forth.