Improvements in or Additions to Jack Tricks Used in Twist Lace Machines.
Year: 1886

page_text: Improvements in or Additions to Jack Tricks Used in Twist
Lace Machines.
{
I, JOHN MOSLEY of Sprays Factory, Cross Street, New Basford, Nottingham,
Lace Maker, 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:-
The object of my invention, is to construct or form and use jack tricks in or to
which extensions or additions are associated and having holes through them with
recesses in opposite order to constitute in themselves an article which might be
termed a jack trick and warp thread carrier combined; the usual warp bar as a
distinct warp bar being dispensed with but which in the production of certain
goods the ordinary warp bar can be employed in conjunction with my improved
jack tricks or the ordinary warp bar can be used for other than warp thread
purposes..
The improved jack tricks are preferably put in a mould, cast, set and can be
fixed to the jack trick bar in the usual or in any other manner. These tricks have
each a hole or eye in an extension or ear, the sides of which are recessed in opposite
order in which the thread can lie.
My invention will be understood by the following explanation reference being
had to the annexed drawings.
At present two guide bars are used in lace curtain machines to produce common
or ordinary work. One of these bars carries the warp threads and the other the
spool or pattern threads. The warp guide bar moves the warp threads to the
right and left of the bobbin threads as the bobbins pass and repass. The spool
guide bar containing the pattern threads is moved right and left one, two or more
gaite as the bobbins pass and repass to produce the pattern required. When the
machine is, in motion the jack bar with jacks and jack trick bar with tricks move
one gait to the right and left as the bobbins pass and repass; these movements are
well understood by lace makers.
Figures 1 and 2 are side views of my improved jack tricks A (and metal A¹
holding same) which have each a hole or eye B in an extension or ear C, the
ear C being recessed at D D for the reception of the thread E.
The jack trick thus constructed forms what I will call a combined Jack Trick
Warp Bar i.e. a Jack Trick Bar and Warp Bar combined.
To produce the ordinary class of goods I use my improved Jack Tricks and
dispense with the warp guide bar and all its appliances. The spool bar will continue
to work as heretofore. I place the warp threads through the eye B of the improved
tricks A as shown in Figure 2. When the machine is in motion the jack trick bar
carrying the improved tricks together with the warp threads is moved one gait to
the right and left as the carriages pass and repass.
I do not confine myself to the exact shaped jack tricks shown on the annexed
drawings as they may be variously shaped or arranged to suit circumstances.

page_text: Figure 3 is a section of a lace making machine showing the application of my
improved jack trick A to the jack trick bar F thus forming a combined jack trick
and warp bar.
G is the spool guide bar. and H the ordinary warp guide bar which can be
retained for other distinct purposes, but would not then be called a warp bar. I is
one of the jacks or pickers inserted in the usual way and carried by the jack
bar J. K and K' are the bobbin carriages above the combs L and L¹ upon their
supports M, M.
My invention could be readily applied to machines already at work (at very
little cost) enabling them to work three tiers of threads instead of two.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what
I claim is:
.
Making Jack Tricks A with an addition or extension piece O having a hole or
eye B therein and recessed as at D D in opposite order (as shown in Figures 1
and 2 of the annexed drawings) or any mere modification of the same as and for
the purpose specified.