Improvements in or relating to Apparatus for Making: Nets.
Year: 1895

page_text: Date of Application,- 22nd Jan... 1895-Accepted, 28th Sept., 1895,
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COMPLETE SPECTRATION
Improvements in or relating to Apparatus for Making: Nets.
A communication from K. KARL ANDERS, NÄTMASKINS-AKTIEBOLAG, of,
Wallingatan 11, Stockholm, in the Kingdom of Sweden, Manufacturers.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent, Agent, 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 ::-
This invention has for its object new and useful arrangements in machines for
making nets which arrangements consist partly of rotary shuttles resting loose, in
their cases and placed in a frame in combination with rotary. "turning discs "
which catch the weft in forming loops thereof, through which the needles for
leading the warp pass, and partly of a laterally-sliding frame for directing the
said needles.. The knots are formed by so-called bowline, hitches" and all sorts.
of yarn, even the weakest employed in net-making, can.be used.
A. machine provided with the said arrangements is represented in the annexed i
drawings in which Fig. 1 shows it in a front elevation, Fig. 2 in side elevation..
Fig. 3 is detail of a "turning disc" shown from above and in side view..
Fig. 4 is,a horizontal and Fig. 5 a vertical section through the, working parts,
and
Figs. 6 to 14 are details showing the manner in which the knots are formed...
The shuttles A lie in cases or boxes in a frame B. on the front, end of the
machine, which frame, is pivotted on one end of a lever. a the other end of, which;
has the form of a toothed segment and gears into another toothed segment on the
one arm of a lever . By this arrangement the frame can be caused to approach,
or move from the lower end of the needle frame D placed also.on the front end of
the machine. The boxes constituting.the frame B have the form of circle sectors:
united to each other at one end but separate at their upper. or opposite ends. The
shuttles A which partake of the revolution of the frame B have also the form of
circle sectors, having their centres in the axis of revolution of the frame B. They
lie loose in the boxes but are prevented from falling out, as the opening in the
upper part of the box is somewhat narrower than the breadth of the shuttle... The
periphery of each shuttle is on the upper end when in normal position prolonged...
The weft is
into a point.beut slightly outwards, and projecting out from the box,
wound in the, interior, of the shuttles..
The frame B is set in revolving motion by a spur-wheel secured to the pivot of
it, gearing into a toothed segment on a lever e, the other end of which is connected.
with a lever by means of a rod as shown for example in Figure 2.
The hollowed round turning discs are provided. with two slightly bent hooks...
(Fig. 3) and fixed on a shaft 60 running in two arms firmly fixed on the end.[:
surfaces of the frame B., To the one end of this shaft there is firmly attached a
spur-wheel gearing into a spur-wheel fixed on the pivot of the frame B. and in.its.,
turn gearing into a toothed segment forming one arm of a lever g, the other arm,
of which is by means of a rod connected with the lever h. By this means the..
turning discs are brought to revolve, when the frame is being raised towards, D,
the books of the discs thereby engaging the weft and forming it into loops..

page_text: The warp is led through hollow, tubular needles C, the lower ends of which are
all bent in one direction. These needles are movable up and down in a lateraliy
movable frame D.
Underneath the needle frame D there are placed rollers for feeding away the
net in proportion as it is made, and to which the threads from the needles and the
shuttles are led.
The working of the above named parts is as follows;-
When the machine starts, the frame B begins to move upward towards the lower
end of the needle frame D and brings with it the turning discs which revolve and
by means of their hooks engage the weft which is thus stretched across the concave
side of the disc from one hook to another and is laid crossways upon the convex
side of the disc, the end of the weft running out from the shuttle lying uppermost
(Figures 7 and 8). After the turning discs have reached the lower end of the
needle frame D the needles C descend, thereby introducing their bent ends
through the opening between the stretched weft and the disc the warp led through
the needle passing back alongside the latter and thus entering together with it
through the loop in the weft. The frame B together with the turning discs then
returns and the discs revolve in an opposite direction thus disengaging the weft
(Figs. 9 10 and 11). As the needles remain in their low position the loop already
formed in the weft will be thus delivered round the needles and the warp, the end
running out from the shuttle lying uppermost. The frame B now begins revolving
and the point of it enters through the eye formed by the warp and the bent end of
the needle below the aforesaid loop in the weft (Figures 12 and 13). As the
shuttle, which is lying free in its case, passes through the said eye in the warp,
this eye will be widened and will ride up, the edges of the shuttle, thus catching
the weft. After the eye of the warp has thus allowed the shuttle to pass through
it the latter revolves back leaving the knot formed (Figure 14). The needles now
ascend, the knot is tightened and the newly finished part of the net is removed by
the rollers. In the meantime the needle frame has been moved laterally, in
consequence whereof each needle will descend just before the next turning disc and
a second knot will be formed in the aforementioned manner. The needle frame
then returns to its former position and the process is repeated.
The number of the needles and the corresponding shuttles may be varied,
according to the desired width of the net.
The machine is set in motion by means of a main shaft. The working parts are
operated through the medium of levers directed by cams having curvilinear
contours and being fixed upon the main shaft. The feeding of the warp and the
tightening of the knots are also performed by means of similar mechanism. The
lateral motion of the needle frame is performed by a semicircular rib k on
the wheel pushing a lever k' firmly connected with a shaft m'and pressed against
the wheel by means of a spring or otherwise. The shaft m operates a lever m
firmly connected therewith and acting upon a projection on the needle frame.
This movement and others may be performed in different manners and arrange-
ments:
Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me by my foreign correspondents, and in what manner
the same is to be performed, I declare that what I claim is ;-
-
1. In a machine for making nets a laterally movable frame for directing tubular
and vertically movable needles such as carrying the warp substantially as
described.
2. In a machine for making nets the combination with a laterally-movable frame
for directing the needles C of hollowed round "turning discs" such as i provided
on opposite edges with two bent hooks and secured to a revolving shaft such as b
which discs when revolving engage the weft forming loops thereof through which
the needles Center by turns the discs then retiring and leaving the loops suspended
round the needles substantially as described.

page_text: 3. In a machine for making nets the combination with a laterally-movable
needle frame and turning discs such as i of a rotary frame such as B carrying
within it shuttles such as A lying loose in their cases and partaking of the
revolving movement of the said frame and thereby passing through the loops
formed by the needles and the warp below the loops left by the turning discs
round the needles substantially as described.
4. The combination and arrangement of parts constituting a complete net-making
machine substantially as and for the purposes described and illustrated in the
accompanying drawings.
Dated this 22nd der of January 1805
BOULT & WADE,
Agents for the Applicant.