Improvements in Twilling Jacquard Machines.
Year: 1894

page_text: Date of Application, 3rd Apr., 1894
Complete Specification Left, 15th Dec., 1894-Accepted, 19th Jan., 1895
PROVISIONAL SPECIFICATION.
Improvements in Twilling Jacquard Machines.
I, ROBERT HUTCHISON, Woodhead Street Dunfermline N.B., Machine Maker
do hereby declare the nature of this invention to be as follows:-
66
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In the twilling Jacquard machine in general use, each of the needles operating
two hooks has two eyes at a considerable distance, about one inch, apart. In order
to save this space I make one eye on the needle embrace both hooks. This eye
may be either a
single" eye encircling both hooks or may be a
"close and open
eye which separates the two hooks by merely the thickness of the needle.
The two hooks which work in, and are operated by, the same needle are of
different lengths, the front hook being say four inches shorter than, and works
immediately in front of, the back hook. There are two sets of brander splits to
lift those two sets of different sized hooks, the upper set of brander splits lifting the
long hooks and the lower set of brander splits lifting the short hooks. The brander
splits are operated by two rets of twilling needles or bars placed between the
higher and lower brander splits. These two sets of twilling needles are operated
from the same tappet shaft. One set of the twilling needles have their projections
extending upwards to work the upper set of brander splits and the other set have
their projections extending downwards to work the lower set of brander splits.
Dated this Third day of April 1894.
ROBERT HUTCHISON.
Improvements in Twilling Jacquard Machines.
I, ROBERT HUTCHISON, Woodhead Street Dunfermline, N.B., Machine 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 :-
In the twilling Jacquard machines in general use, each of the needles operating
two hooks has two eyes at a considerable distance, (about one inch), apart.
My
improvement consists in having the two eyes (a and a¹), close together, separated
only by the thickness of the needle wire (6) as shown in the accompanying
drawings. This has the advantage of reducing the size of the machine to about
one-half its present width where the same number of hooks are employed, or of
doubling the number of hooks in a machine of the ordinary size.
The two hooks (c and c¹) which work in and are operated by the same needle (b)
are of different lengths, the front book (c) being say four inches shorter than, and
works immediately in front of, the back hook (c) as shown in Fig. 1.
There are two sets of brander splits (e and e¹) to lift the two sets of hooks, the
upper set of brander splits (e) lifting the long hooks (c) and the lower set (e¹)
lifting the short hooks (c¹). The lower set also serve to guide the hooks and by
keeping the hooks clear of the descending brander obviates the risk of damage
by it.

page_text: The brander splits are operated by a set of twilling needles or bars placed
between the upper and lower sets of brander splits: one-half the set of twilling
needles have their projections extending upwards (f) to work the upper set of
brander splits; the other half have their projections extending downwards (f¹) to
work the lower set of brander splits. The twilling needles and brander splits are
operated from the same tappet shaft.
Fig. 2 is an enlarged side view of the needle eyes enclosing the hooks: Fig. 3 is
an enlarged top view of the same.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :
The application to Jacquard twilling machines of a needle having its two eyes
set close together substantially as described above, enabling the machine to be
reduced in size to about one-half its present width, or doubling the number of
hooks in a machine of the ordinary size.
Dated this 13th day of December 1894.
ROBERT HUTCHISON.