IMPROVEMENTS IN TWIST LACE MACHINES
Year: 1884

page_text: I HERBERT REDGATE of 17 Larkdale Street, Nottingham in the County of
Nottingham, Lace Manufacturer, do hereby declare the nature of my Invention
for IMPROVEMENTS IN TWIST LACE MACHINES, to be as follows:-
The object of my invention is to effect improvements in the construction of
locker-bars and jacks, and in the methods of operating upon the locker-jacks, in
Twist lace machines.
In carrying out my invention, I use an additional locker-bar, consisting of a
square bar, to each side of which a longitudinal flange is fixed, thus forming an
inverted trough, into the lower side of which the jack enters, when it is lifted; and,
when so lifted, it at the same time causes the necessary motion to be imparted to
the jack by my improved locker-bar.
In some cases I construct an upright trough for a similar purpose, as an
attachment to the ordinary locker-bar, or independently of the same, into which
the end of the jack enters.
In some cases I also improve the present jack by an elongation of the outer end,
whereby improved facilities for various operations are obtained.
My improved compound locker bar-can be arranged to propel the locker jack a
given distance, after which it remains stationary and locked until the threads in
the back guide bar (which that intercepts or other guide bars intercept) have
completed their definite movements to the right or left. And, if required, the jacks
may be propelled the whole distance, and then remain locked, and intercepting the
outside thread or threads in the guide bar or bars, until such guide bars have
completed their definite movements to the right or left; and other necessary
movements may be effected.
GEO. DOWNING,
Agent for Applicant.

page_text: I, HERBERT REDGATE, of 17 Larkdale Street, Nottingham, in the County of
Nottingham, Lace Manufacturer, do hereby declare the nature of my said Invention
for "IMPROVEMENTS IN 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 my invention is to effect improvements in the construction of
locker-bars and jacks, and in the methods of operating upon the locker jacks, in
Twist lace machines.
In carrying out my invention, I use an additional locker bar, consisting of a
square bar, to each side of which a longitudinal flange is fixed, thus forming an
inverted trough, into the lower side of which the jacks enter, when they are lifted;
and, when so lifted, it at the same time, causes the necessary motion to be imparted
to the jacks by my improved locker bar.
In some cases I construct an upright trough for a similar purpose, as an
attachment to the ordinary locker bar, or independently of the same, into which
the ends of the jacks enter.
In some cases I also improve the present jack by an elongation of the outer end,
whereby improved facilities for various operations are obtained.
My improved compound locker bar can be arranged to propel the locker jack a
given distance, after which it remains stationary and locked until the threads in
the back guide bar (which that intercepts or other guide bars intercepted) have
completed their definite movements to the right or left. And, if required, the jacks
may be propelled the whole distance, and then remain locked, and intercepting the
outside thread or threads in the guide bar or bars, until such guide bars have
completed their definite movements to the right or left; and other necessary
movements may be effected.
And in order that my said invention may be particularly described and
ascertained, reference is hereby made to the accompanying drawings, in which
similar letters of reference indicate corresponding parts.
In Fig. 1 so much of a twist lace machine is shewn, as is necessary to explain
my improvements, and Figs 2, 3, 4, 5 and 6 shew further modifications of such
improvements.
In using twist lace machines, as ordinarily constructed, I employ two, three or
four guide bars, as a b and c, Figs 1 and 2; the number being determined by the
pattern of the fabric to be manufactured. The movements of these bars are
effected by means of the usual guide bar wheels, cut into segments to impart the
up and down motion: the guide bars each having the number of guides equal
to the number of carriages in the machine, and each guide bar is supplied with
either spool threads or warp threads, as required for making the various patterns.
But in order to carry into effect many other movements, and execute patterns
f

page_text: unattainable with locker bars and jacks of ordinary construction, I construct my
improved trough and angle locker bars and jacks as herein described.
În one modification I form the jacks with an elongation, as shewn at e, in Figs 1
and 3, where the elongation is shewn shaded black; and I also provide an
5 addition to the locker bars f, forming a right angle therewith (or thereabouts), and
which addition is also shaded black in Figs 1, 2, 3, 4 and 5 and marked with the
letter g. This elongation g of the locker bars operates (when necessary) upon the
elongated end e of the jack, as shewn (in dotted lines) at h, in Figs 1, 3, and 5, and
also upon the curved ends of the jacks as shewn in Figs 2 and 4.
0
At k, in Fig. 1, one of my improved inverted trough locker bars is shewn. k is
the bar, and k¹ k¹ are the two sides (shewn in section) which, with the bar k, form
the trough, into which the loop of the jack enters, when sufficiently raised,
and the motion of the trough at the same time imparts the necessary motion to
the jack. This motion is in addition to that imparted by the ordinary locker
5 bar m.
In Fig. 2 another arrangement of trough locker bar is shewn at k³, the trough
being upright, into which the curved ends of the jacks (as ordinarily made) dip,
and thereby receive the necessary motion,-My improved locker bars fg are also
shewn, in Fig. 3, operating on the curved ends of the jacks, as at h¹.
In Fig. 3 I have shewn another modification, in which ordinary locker bars m m
are used, both above and below the jacks, and my improved locker bar f g, and
elongated jacks de, are used in combination therewith.
I also apply the ordinary locker bar in an inverted position to propel the loop
of the jack, as also shewn in Fig. 3.
I also apply my improved angle locker bar in an inverted position; driving the
ordinary jack d, as shewn in Fig. 4, and driving my improved jack as shewn in
Fig. 5.
In Fig. 6 I have shewn another form of trough locker bar k³, differing but
slightly from that shewn in Fig. 2.
In the same figure (6) I also shew the improved attachments, or fingers, d¹ d',
to the jack d. These fingers may be above or below or above and below, or in
any other position for being operated upon by the locker bars and jack bars, as
desired.
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 In twist lace machines, the use of inverted trough locker bars k, k', operating
as and for the purposes described and shewn in Fig. 1 of the drawings.
2 In twist lace machines, the use of upright trough locker bars, operating as and
for the purposes described and shewn at k in Fig. 2 and 3 in Fig. 6 of the
drawings.
In twist lace machines, the use of the improved form of jack, consisting of the
elongation e, operating as and for the purposes described and shewn in Figs 1, 3
and 5 of the drawings.
4 In twist lace machines, the use of inverted locker bars m, operating upon the
loop of the jacks as and for the purposes described and shewn in Fig. 3 of the
drawings.
5 In twist lace machines, the use of upright locker bars fitted with my improved
angle g operating upon the elongated ends of my improved jacks, as and for the
purposes described and shewn in Figs 1 and 3 of the drawings.
6 In twist lacemachines, the use of my improved upright angle locker bars fg,
operating upon the curved ends of ordinary jacks, as and for the purposes described
and shewn in Fig 2 of the drawings.
7 In twist lace machines, the use of my improved inverted angle locker bars fg,
operating upon the elongated ends of the jacks d, as and for the purposes described
nd shewn in Fig. 5 of the drawings.

page_text: 8 In twist lace machines, the use of my improved inverted angle locker bars ƒ g,
operating upon the curved ends of ordinary jacks d, as and for the purposes
described and shewn in Fig. 4 of the drawings.
9 In twist lace machines, the use of fingers d' d', as additions to the jacks d,
operating as and for the purposes described and shewn in Fig. 6 of the drawings.
Ch 1885
GEO. DOWNING,
Agent for Applicant.