Improvements in Twist Lace Machines.
Year: 1890

page_text: Date of Application, 24th Apr., 1890
Complete Specification Left, 24th Feb., 1891-Accepted, 28th Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in Twist Lace Machines.
I, HERBERT REDGATE, of 134, Queen's Walk, in the Town and County of the
Town of Nottingham, Lace Manufacturer, do hereby declare the nature of this
invention to be as follows:-
The invention relates to lace machines known as "locker bar" and "roller
locker" machines.
In such machines as hitherto constructed the carriage tops have been placed
at a considerable distance below the lower edge of the "facing bar" or centre
of motion of the carriages and the crossings and twistings of the warp threads
and bobbin threads have been taken up and the lace completed by the aid of
points.
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According to my present invention I so construct the carriages used in the
machines herein before referred to as to enable the twistings and crossings of the
warp threads and bobbin threads to be taken up by the carriages and the work
completed on the carriage tops thereby enabling me to dispense with the points, the
point leads, point bars, cams, levers, springs and toothed gearing and connections
used for working the same.
According to my invention I form the carriages used in "locker bar" and
"roller locker" machines of a generally triangular shape the bottom of the
carriage being in the form of a segment of a circle to fit the combs and provided
with the usual downwardly projecting teeth to act in combination with "locker
bars for "locker bar "machines and in combination with fluted rollers for roller
locker machines.
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The upper part of the carriage is brought to a point which is at the centre of
motion of the carriage and on which the fabric is formed or completed; the carriages
in crossing the machine enter the warp threads which by the usual movements have
threads
an inclined position and in the continued motion of the carriages the warp
are caused to slide up the edges of the carriages until they arrive at their tops or
centre of motion where the work is completed.
The usual method of moving the warp threads with guide bars, jacks, stump bars,
steel bars, and jacquard is employed.
By the combination of triangular shaped carriages as herein described with
locker bar or roller locker machines a clear space is left in the centre of the
machine when the carriages are at the back or the front for the free working of
the warp or guide bar threads.
Dated April 24th 1890
COMPLETE SPECIFICATION.
Improvements in Twist Lace Machines.
1, HERBERT REDGATE, of 1344, Queen's Walk, in the Town and County of the
Town of Nottingham, Lace Manufacturer, do hereby declare the nature of my said
invention, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to lace machines known as "locker bar" and "roller
locker" machines.

page_text: In such machines, as hitherto constructed, the carriage tops have been placed
at a considerable distance below the lower edge of the "facing bar" or centre
of motion of the carriages, and the crossings and twistings of the warp threads
and bobbin threads have been taken up and the lace completed by the aid of
points.
Now the object of my present invention is to so construct the carriages used in
the machines herein before referred to, as to enable the twistings and crossings of
the warp threads and bobbin threads to be taken up by the carriages, and the work
completed on the carriage tops, thereby enabling me to dispense with the points,
the point leads, point bars, cams, levers, springs and toothed gearing, and
connections usually used for working the same.
1 form the carriages used in "locker bar" and "roller locker" machines, of a
generally triangular shape, the bottom of the carriage being in the form of a
segment of a circle, to fit the combs, and provided with the usual downwardly
projecting teeth to act in combination with "locker bars" for locker bar
machines, and in combination with Huted rollers or pinions for roller locker
machines.
The upper part of the carriage is brought to a point such point being at the
centre of motion of the carriage, and on which the fabric is formed or completed.
The carriages in crossing the machine enter the warp threads, which, by the
usual movements, have an inclined position, and, in the continued motion of the
carriages, the warp threads are caused to slide up the edges of the carriages, until
they arrive at their tops, or centre of motion, where the work is completed.
The usual method of moving the warp threads with guide bars, jacks, stump bars,
steel bars, and jacquard is employed.
By the combination of triangular shaped carriages, as herein described, with
"locker bar," or
"roller locker machines, a clear space is left in the centre of the
machine, when the carriages are at the back or the front, for the free working of
the warp or guide bar threads.
And in order that my said invention may be particularly described and ascer-
tained, reference is hereby made to the accompanying drawings, in which similar
letters of reference indicate corresponding parts.
Fig. 1 represents those parts of a roller locker machine which are necessary to
illustrate my improvements, the carriage being provided with teeth for operating
the same.
Fig. 2 is an edge view of the carriage.
Fig. 3 is an elevation of the comb which guides the carriage.
Fig. 4 is a section on the line 1-2 of Fig. 3.
Fig. 5 is an enlarged view of a carriage used with the double locker bar
machine.
Fig. 6 is an edge view of the same.
Fig. 7 illustrates another form of carriage used in the double locker bar
machines.
Fig. 8 is an edge view of Fig. 7.
Referring to Fig. 1, a is one of the improved carriages, having a segmental row
of teeth, a, as shown. The upper part of the carriage is brought to a point a³,
which point is the centre of motion of the carriage. On this point the fabric is
formed by the threads b. A guide hole a³ (shown in Figs. 5 and 7) is formed, as
near to the point as possible, for the passage of the thread through the same from
the bobbin. The teeth a' at the edge of the segment are acted upon by 4 fluted
rollers or pinions c c c c. d is a vibrating frame, the centre of motion of which
coincides with a². This frame is formed with teeth e e, which engage the teeth of
the rollers or pinions c c. f is a crank pin fitted to the frame d. is a connecting
rod, connecting the pin with the pin on the crank i, rotating on the axle k
whereby the apparatus is driven.
The action of the crank i causes the frame d to vibrate upon its centre, by means
of which the pinions or rollers ce are caused to rotate, and, by their connection

page_text: with the carriage a, the latter is caused to vibrate upon its centre, as shown in
Fig. 1.
The carriage a is one of a series; any required number being fitted as usual.
The carriage a is retained in position as it vibrates by means of the comb shown
in Figs. 3 and 4. A rib or projection n, formed on the comb, fits into the groove m
formed in the carriage a.
The carriage shown in Figs. 5 and 6 is also formed with the segmental groove m,
for guidance by means of the comb shown in Figs. 3 and 4 this carriage is formed
with two tails o o, whereby the carriage is driven backwards and forwards by locker
bars, in a manner well understood. The circle may however be struck from a
4 inch centre in place of a 6 inch.
The modification of carriage shown in Figs. 7 and 8 has two tails oo and an
additional tooth for use
in the double locker and locker bar machines. The
carriage is driven to and fro by locker bars, in the usual manner, and is also guided
by the aforesaid comb fitting in the groove m.
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 application and use of the carriage a, having
teeth a', point a², and guide hole a³, in combination with fluted rollers or toothed
pinions e, operated by the to and fro motions of the segmental frame d having
teeth e gearing into the pinions c, severally operating so as to dispense with
the usual point bars, substantially as herein before described and illustrated by
the drawings.
2. In twist lace machines, the application and use of combs for guiding the
carriages substantially as herein before described and illustrated by the drawings.
3. In twist lace machines, the application and use of carriages constructed,
arranged and operating substantially as herein before described and illustrated by
Figs. 5, 6, 7 and 8 of the drawings.
4. In twist lace machines, the application and use of a segmental frame d, mounted
so as to vibrate concentrically with the centre a² of the carriage a, substantially as
herein before described and illustrated by Fig. 1 of the drawings.
5. The general construction, combination and arrangement of the several and
respective parts, together forming my invention of improvements in twist lace
machines, substantially as herein before described and illustrated by the drawings.
Dated 24th February 1891
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent for Applicant.
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent for Applicant.