Improvements in and relating to Machines for Making Nets.
Year: 1891

page_text: Date of Application, 16th June, 1891-Accented, 8th Aug., 1891
COMPLETE SPECIFICATION,
Improvements in and relating to Machines for Making Nets.
I, WILLIAM JOHN HOOPER, a citizen of the United States of America, residing
at No. 110 East Pratt Street, in the City and County of Baltimore and State of
Maryland, one of the United States of America, Manufacturer, 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:—
My present invention relates to the art of making nets, and has for its object the
production of an improved machine for knotting cords or threads for nets, which
shall be of simple construction but rapid and effective in operation.
The best form in which I have contemplated embodying my invention is illustrated
in the accompanying drawings, and said invention is fully disclosed in the following
Specification and claims.
In the drawings-
Figure 1 is a front elevation of my netting machine;
Figure 2 is a view of the right hand end, or looking towards the right of
Figure 1;
Figure 3 is a view in elevation of the left end of the machine, or looking towards
it from the left of Figure 1;
Figure 4 is a vertical section from front to rear ;
Figure 5 is a partial sectional view at right angles to the section shown in Figure 3
with parts removed;
Figure 5A is a detail plan view of the cast-off bar, the toggle levers and links ;
Figure 6 is a partial view from the rear of the machine;
Figure 7 is a view of detached parts, looking toward the front of the machine;
Figure 8 is a partial perspective of the same parts;
Figure 9 is a section from front to rear through the finger bars and their accom-
panying cast-off bar;
Figure 10 is a partial front view of the rear finger bar;
Figure 11 is a front view of one of the hooks of the hook bar;
Figure 12 is a partial perspective of the two finger bars, and the cast-off bar
showing the position of the thread at different stages of the operation of forming a
knot, alternate teeth being broken away for the sake of clearness;
Figure 13 is a sectional detail of the tension devices;
Figure 14 is a top view of one of the shuttles;
Figure 15 is a transverse section of a shuttle and its raceway;
Figure 16 is a detail section showing manner of supporting the hook cast off ;
Figures 17 to 23 are detail views of certain cams, and
Figure 24 is a partial section of the machine from front to rear.
In my present machine the netting is formed from warp threads or cords which
extend through the machine from front to rear, and with which are tied shuttle
threads or chords, each shuttle or carrier thread being knotted to two adjacent
threads first to one and then to the other in regular alternation.
In the figures of the drawing, A, A, indicate the end pieces or standards, which
may be of any suitable or preferred construction, and which are united at con-
venient points with suitable connecting or tie beams or bars to form a rigid
supporting frame for the operative parts of the machine.
At the rear of the machine is placed in suitable bearings in the end pieces or
standards of the frame a main or driving shaft, L, to which power is applied in any
suitable or preferred manner.
This shaft is provided with a spur gear, T, which gears with a toothed wheel, T',

page_text: on a shaft, M, and this wheel gears with a spur gear, T2, on a shaft, N, at the front of
the machine. All of the moving parts of the machine are actuated from these
shafts.
On a platform, B, near the base of the frame I mount a suitable number of
spindles to receive the spools or bobbins, C, containing the warp threads or cords.
From these bobbins the warp cords or threads, extend to the front of the machine
to and partially around a rod, b, thence upward to a warp tension device, thence
upward to let off devices, thence to and partially around a rod, b, thence to a thread
carrier, G g, thence past the fingers of the finger bars, H, and I, to the take up
mechanism.
The group of devices which I have termed the take-up mechanism is best shown
in Figures 2, 3 and 5. On the rearwardly extending portions of the frame, K, are
mounted the take-up rollers, K', K³, K³, the shafts of which are journaled in
suitable bearings in or attached to the frame extension, and the loose
or free roller, K4, rests upon and partially between the rollers, K', and K³,
and engages with the peripheries of both of these rollers. These rollers I prefer
to actuate from the main or driving shaft L, through the following instrumentalities.
The shafts of the rollers project beyond the frame at one end of the same.
The
shaft of roller, K2, is provided with a gear wheel, k, and a ratchet, k¹. The shaft
of roller, K³, is provided with a gear wheel, k2, and idle wheels or pinions, k³, are
mounted on studs secured to the frame and operatively connect wheels, k, and k².
The shaft of roller, K', is provided with a gear wheel, k, and an idle wheel or
pinion, 46, connects it with the pinion, k, on the shaft of roller, K². An arm or
lever, k', is also pivoted on the shaft of roller, K2, which is provided with a pawl, k³,
engaging the teeth of the ratchet wheel, k¹. The arm or lever, k², is slotted and a
link, R, is pivoted thereto by a bolt passing through the slot. This link extends
downward and is pivoted to a lever, Ro, pivoted at, k, to the frame of the machine.
This lever, R¹º, near its rear end is provided with a friction roll, k, which engages
a cam,, on the main or driving shaft, L. The pawl, 48, is so constructed and
placed that the ratchet, k¹, is engaged thereby and the take-up mechanism operated
when the lever, 10, and link, k³, are raised by the cam, the weight of the parts
being sufficient to return them to their lowest position after the friction roll has
passed the elevated portion of the cam grade. By adjusting the link to and from
the shaft of roller K³, in the slot of the arm, k, the extent of movement imparted
to the take-up rollers is increased or diminished as desired.
The cords or the netting as it comes from the knotting mechanism passes under
and partially around the roller, K', over and partially around the loose or free
roller, K, under and partially around the roller, K2, and then over the roller, K³.
By this construction the netting is gripped or pressed by the weight of the loose or
free roller against the peripheries of rollers, K', and K, and a strong and effective pull
is secured to advance the fabric and tighten the knots when a row of the latter
have been completed.
Forward of the take-up mechanism at the top of the machine, are two finger
bars, H, and I, best seen in Figures 8, 9, 10, and 12. The finger bar, H, is rigidly
secured in position by attachment to the frame of the machine. It is provided with
points or fingers, h, secured to the rear side of the bar and projecting below it.
Each of said points or fingers is provided with a cord recess, A, the lower edge of
which slopes or inclines downwardly outward or toward the edge of the point or
finger. Below this recess the point or finger has its edges provided with slight
concavities, h2, h3, so that when the warp cords are drawn around them in looping
the cord for the knot, it will not slip downward and off from the point or finger.
In rear of the stationary finger bar, H, are guides, I', I', secured to the frame of
the machine, and a movable point or finger bar, I, has its ends fitted to these guides,
and is adapted to move upward and downward upon or within the same. A pair of
toggle levers, 12, 12, connect this bar near each end of the same or near each end of
the machine with a cross beam, 1³, extending from side to side of the machine above
the finger bars. The central pivots of the toggle levers, 1, 13, are connected by a

page_text: At the
link I to a rod or bar, I°, sliding in bearings at the sides of the machine. This
rod or bar, I, extends to the right beyond the frame of the machine and is provided
with two collars, I, and I', adjustably secured to the rod by set screws.
same end of the machine a bracket, 18, is secured upon the outside of the frame,
and a lever, I, is pivoted to this bracket. This lever, 1°, is forked at its upper end
and extends on both sides of the rod or bar, I5, between the collars, I, 17. Its
lower end is provided with a friction roll, I, which bears against the outer face of
the cam disk, M', mounted on shaft, M, at the right of the machine. This disk
has two cam projections, m, m, in the path of the friction roller and by engagement
therewith force the rod, I, inward, and raise the bar I. The weight of the bar
returns it to its normal position when the friction roller has passed the cam grades.
The bar, I, is provided with pointed fingers, i, attached to the front side of the
bar and extending below the same. These points or fingers are longer than the
points or fingers, h, of the stationary finger bar, and they extend slightly below
them, as seen in Figure 9. The fingers or points, i, are pointed as shown, and
the inclined edge of the tapering portion constituting the tip of the finger on the
right is concaved, as shown at, . The opposite side of the tip may be either
straight or of a like concavity. On the edge of the finger opposite the con-
cavity, , the finger is provided with a rounded shoulder, . To the front side of
each of these fingers, i, is pivoted a small bell-crank lever, 3, the horizontal arm
of which extends beyond the edge of the finger at the side opposite the
shoulder,, forming a cord rest or support; and for this reason said levers are
called "cord levers." The other arm of the lever, ³, extends upwardly in an
inclined direction. Between the bars, H, and I, is placed a bar, J, for casting off
the loops of the warp thread from the fingers, the said bar coming in contact
with the loops and casting them off the fingers as the bar, I, rises. This bar is
provided with two pins, j, j, for each of the cord levers, i³, and these pins engage
the opposite edges or sides of the upwardly extending arm of those devices.
Two toggle levers, J¹, J³, connect this bar with the cross bar, I³, of the frame,
and the central pivot of each of these levers is connected by a link with a rod, J³,
sliding in bearings in the sides of the frame of the machine. The rod, J³,
extends at the left of the machine beyond the framing and is provided near its
end with two collars, ³, j³. The rod between these collars is embraced by the
forked end of a lever, J', pivoted at, j, to a bracket, J', secured to the frame of
the machine, and the lower end of the lever is provided with a friction roll, j³,
which engages the outer face of a cam disk, M2, mounted on shaft, M. The
disk, M2, is the counterpart of the disk, M', at the opposite end of the machine,
and is provided with corresponding cam surfaces, m², m². The bar, J, being quite
thin and light the friction roll, , is kept in contact with the face of the cam
disk, M', by a spring, Je, placed on the rod, J³, between the collar, ³, and the
frame of the machine.
It will be seen that as the toggle levers are bowed in the same direction, the
movements imparted to the rods, Is, and J³, will cause the bars, I, and J, to
move in opposite directions, the bar, I, moving upward and the bar, J, moving
downward.
The fingers of the bars, H, and I, are equal in number and are placed in line
with or opposite each other. In the operation of tying a knot, the warp cords
are carried around and placed upon a finger of the stationary finger bar and a
finger of the movable finger bar, as shown in Figure 12, and more particularly
described hereafter, by a cord or thread carrier, which I will now proceed to
describe.
At the front side of the machine a shaft, G3, is mounted in suitable bearings at
each end of the machine so as to rock and slide therein. To this shaft are rigidly
secured upwardly extending arms, G³, and in the upper ends of the arms, G³, is
journaled a bar, G. To the rear of the bar, G', are the cord carriers, g, g, which
consist of vertically extending pins provided at their upper ends with eyes through
which the warp cords are threaded. These carriers are rigidly connected to and

page_text: supported by the bar, G4, and this connection may be of many different characters.
Each carrier might be connected to the bar, G, by a single arm or rod, or the
carriers might all be attached to and supported by a single bar extending the
distance desired, and this bar connected with bar, G, by two or more arms rigidly
connected to both, or they might be secured to the outer edge of a plate having
its opposite edge rigidly secured to the bar, G. In the drawings the cord
carriers are shown connected to the bar, G', by a series of sections, g¹, g', secured
to the underside of the same. These sections have a solid portion at the point
of attachment to the bar, G, and a solid portion to which the carriers are secured,
and intermediate these portions are formed with slots, g³. These sections have a
downward curve rearward of the bar, G', and at their lowest point are provided
with a rib, g, through which are holes or eyelets for the passage of the warp cords.
The cords after passing through these eyelets, extend to the rear edge of the
sections, g, g', where they rise vertically beside the carriers and pass through the
eyelets of the same.
At the beginning of the series of operations to form the knots, the cord carriers
form a loop of a warp cord on and around each finger, h, of the stationary finger
bar and the finger, i, of the movable finger bar opposite to it or in line therewith;
and the necessary movements to accomplish this are given the carriers by the
following instrumentalities. The movements from the front towards the rear and
from the rear towards the front of the machine are imparted by the grooved
cam, N¹, (shown in detail in Figure 19), mounted on the shaft, N. This cam acts
upon a friction roller, g, projecting from one side of the arm, G³, rigidly secured
to the shaft, G. An arm, G, rigidly secured to the bar, G, is connected by a
link, G, with a lever, G³, pivoted to the frame of the machine, and which is
provided with a friction roll, 9, engaging a cam, N2, on the shaft, N, (shown in
detail in Figure 17). The friction roll, g, is maintained in contact with the
periphery of this cam by a spring, G°, and this cam and spring serve to impart
the necessary vertical movements to the carriers by rocking the bar G', in its
bearings. The necessary movements of the carriers from one end of the machine
towards the other are given by the following parts: A bracket, G10, is secured to
the outside of the frame of the machine to which is pivoted a lever, G". This
lever is bifurcated at its upper end and each of the bifurcated parts is pivoted to
a sleeve, G, on the shaft, G². One of the points of pivoting is shown at, go.
The shaft, G2, is free to turn in the sleeve, G¹, which is secured from endwise
movement upon the shaft by the collars, 97, 98, adjustably secured to the shaft by
set screws.
The other end of the lever, G", is provided with a friction roll, q', which
engages with the groove in the periphery of the cam, N³, on the shaft, N, (shown
in section at Figure 23). As both sides of the cam groove engage the friction
roller, g, the shaft, G', will be moved positively in both directions by the cam.
When the machine is in operation and the knotting devices are about to enter
upon the series of movements to form a row of knots across the machine, each
carrier occupies a position relatively to each pair of fingers, h, and i, substantially
as shown at 1, Figure 12. The cams, N1, N2, N³, are constructed and arranged so
that upon the rotation of the shaft, N, the carrier moves to the left across the
front of the finger, h, drawing the cord firmly against the concavity of the right
edge of the same; the carrier then moves backward drawing the cord against the
concave portion 3 of the left edge and laying it against the left edge of the
finger i, above the shoulder, 2, the carrier then moves to the right and downward
and then forward drawing the cord against the concave side, i¹, of the finger, i;
the carrier continues to move forward, and at the same time moves upward, and
after passing the finger, h, moves to the left carrying the cord against the inner
edge of the recess in the finger, h, as shown at 2, Figure 12, in which position it is
ready to be engaged and drawn downward to form loops for the passage of the
shuttle. Below the finger bars, H, and I, the frame of the machine is provided
with vertical guides, O, O, which may be a continuation of guides I, I', and the

page_text: ends of a bar, O', are fitted to these guides. To this bar is attached the
frame O, to the upper side of which are secured the hooks, o, having the con-
struction most clearly shown in Figure 11. The books are of less width than the
fingers, h, and i, and the tips of the same have an inclined lower edge terminating
in a point at the right side. One hook is provided for each pair of fingers, h,
and, and the construction and arrangement is such that when raised to its highest
position each hook will be midway between the fingers h, and i, with the point of
its hook slightly above the portion of the cord extending from the side, ¹, of the
finger i, into the recess of the finger h, in such a position that on its moving
downward it will engage that portion of the cord and carry it with it in its descent.
The hook is shown at 3, Figure 12, as having begun its descent with the cord,
but considerably above its lowest position. As the cord is drawn diagonally
across the space between the fingers the right side of the tip of the hook alone is
over the cord. The tip is, therefore, given the shape shown so that on its down-
ward movement the point will seize the cord and the pressure of the cord against
the inclined edge will spread the loop to the full width of the hook as it is drawn
upward against the cord seat between the tip and main body.
The bar, O, and the hook frame are raised at the time desired by the cams, L³, L³,
on the main or driving shaft, L, through the following connecting mechanism. To
rearwardly extending brackets secured to the framing of the machine, are pivoted
two levers, o, having friction rolls engaging the cams, L³, L³, and two levers, o³.
Each lever, o, is connected with its adjacent lever, o, by a link, o³, and each
lever, o², is connected with the bar, O, by a link, o'. The weight of the bar, O¹,
frame, O2, and the parts connected therewith is such as to maintain it in the lowest
position permitied by the cams, L3, L³, and hence the descent of the hooks, o, is
controlled by the cams and they are thus caused to descend without shock or jar.
When the hooks, o, o, have descended to their lowest position, each carrying with
it a loop of warp cord, a shuttle or weft cord is interlocked with every warp cord
less one, by passing shuttles through all of the loops drawn down and held by the
hooks o, o, except one. The warp cord or thread excepted, is always a selvage
cord, and is alternately the thread at the right and left sides of the fabric.
The raceways for the shuttles are formed in a bed, P; located in a horizontal
plane between the stationary finger bars, H, I, and the lowest position of the
hooks, o, o, with sufficient space between it and the finger bars for the movement of
the cord carriers. This bed and the shuttle raceways are divided by a slot running
parallel with the hook frame and finger bars to permit the passage therethrough of
the hooks and the loops carried thereby.
An
The underside of the bed at the edges forming the sides of the slot are
cut away as shown at p, Figure 16. Two toothed or fluted rollers P1, P2,
having the section of gear wheels or pinions, have their shafts journalled in
suitable bearings in such position that the ridges or teeth of the rollers are a
little above the bottom of the shuttle raceways. Below these rollers are two
rock shafts, P4, P5, journalled in the frame of the machine, the one projecting
beyond the frame to the right of the machine, and the other to the left. Outside
of the frame at the left of the same, one shaft is provided with an arm, P³, provided
with a geared sector, P, gearing with a pinion, P, on one of the roller shafts.
arm, P, on the same shaft extends downwardly in an inclined direction and is
provided with a friction roller engaging a cam groove, M³, on the inner face of the
cam disc, M².
At the opposite end of the frame the other shaft is provided with a
similar arm and sector, said sector gearing with a like pinion on the other roller
shaft. A similar arm rigidly connected to this shaft is provided with a friction roller
and engages a cam groove of like configuration on the inner face of the cam disk, M'.
The shuttle raceways, P, are one less in number than the points or fingers, H,
and are located midway between such fingers. Each race-way has the construction
in section shown in Figure 15, with inwardly projecting Hanges, p², p³. The
shuttles, Q, have the form shown in Figure 14, and are provided on the underside
with a projecting rib, y, provided with teeth forming a rack, as shown in Figure 3,

page_text: to engage the fluted or toothed rollers, P1, P2. The shuttles are of such width that
on moving across the slot in the shuttle bed they come in contact with two of the
loops drawn down by the hooks, o, o.
The ends of the shuttle are cut away so as
to have a point at one end in line with one side and a point at the opposite end in
line with the other side, so that in moving in one direction the shuttle engages and
passes through the loop in line with one side of the shuttle, and on its return
engages with and passes through the loop in line with its opposite side. The
interior of the shuttle may be of any approved form.
I provide a let off for drawing from the spools or bobbins, C, a sufficient amount
of cord or thread for the knot and the mesh of netting next to be formed. In
suitable brackets at the front of the machine are rigidly mounted two rods, E, E'.
Two levers E³, E*, pivoted near the base of the machine extend upwardly and are
provided at or near their upper ends with a bar, E, forming a swinging frame.
The bar, E, is provided with cord or thread eyes, e, e, and the cords or threads
pass in front of the rods, E, E', and are threaded through the eyes on the bar, E³,
of the swinging frame. This bar is caused to move inward to draw off the proper
amount of cord or thread and forward to yield the thread by a cam, No, on the
shaft, N, through the following connecting mechanism :-Two levers, e¹, e¹, are
pivoted at 2, e, to brackets, 3, 3 secured to a cross bar or beam of the framing.
Each lever is provided with a friction roll engaging a cam N, one of which is
shown in detail in Figure 22. Two links, e, e, connect these levers with the
levers, E E of the swinging frame, said links being connected to said levers, E³, E',
by bolts passing through slots, so that by adjusting the point of connection the
amount of movement given to the swinging frame can be increased or diminished
according to the size of the mesh desired. The links, &, e, may be also made
adjustable upon the levers, e¹, e', when desired. The levers e', e¹, even when in
their most forward position are inclined with their lower ends extending rearward
of their pivots, and each is provided at its lower end with the rearwardly curved
portion, e, having the counter-weight e". This weight tends to force the lever, e',
to a vertical position and maintains the friction roll secured thereto in contact with
the cam and moves the swinging frame outward when permitted to do so by the
cam. This weight and the cam serve to move the swinging frame backward and
forward to effect the proper letting off of the cord or thread.
At the close of the formation of a series of knots across the fabric, the shuttle
cord or thread is approximately straight, while the warp cords or threads are
wound around the fingers, h, and i, and a portion drawn through the loop thus
made by the hooks, o, o. It is essential in tightening the knots that the whole or
the greatest amount of force should be applied to the warp threads. In order to do
this and thereby accomplish the proper completion of the knot at the instant that
the take-up mechanism begins to act, I apply a strong tension upon each warp
thread. At the front of the machine, below the let-off devices, a bar, D, extends
parallel thereto, and is journalled in suitable bearings. To this bar I attach an
independent tension device for each warp cord or thread, see Figure 13, consisting
of the bracket, D', which is rigidly secured to the bar, having the upward
projection, d, and the side flanges, d', between which is pivoted the weighted
lever, D2, having a lug, d', projecting from the forward side of the same, and the
lug, d³, at the upper end of the lever, projecting rearwardly.
The lever, D, is pivoted so that it has a slight motion on its pivot, and in its
normal position the upper end is held away from the back of the bracket, D¹. The
lever, D³, is provided with an aperture, d, passing vertically through the lug, d², an
aperture, d, passing horizontally through the upper end of the lever from front to
rear, and an aperture, de, passing vertically through the lug, d³. The warp cords
or threads are threaded through these apertures, The bar, D, is provided at one
end with an upright arm rigidly secured thereto, and this arm is connected with the
frame of the machine by a spring, D³, which tends to hold the levers, D³, in their
normal position. At some convenient point I secure to the bar, D, another rigid
arm, D', which is provided at its outer end with a friction roll lying in the path of

page_text: a cam projection, N, on the periphery of the disk, N', on the shaft, N. The
arrangement is such that when the cam projection strikes the friction roller on the
arm, D, the bar, D, is turned on its bearings and the levers, D2, tilted to the
position shown in dotted lines, Figure 13. In this position the weighted end of the
lever forces the upper end against the back of the bracket, D', and grips the cord
or thread extending between apertures d³, and do strongly between them, holding
the same with sufficient resistance to enable the take-up mechanism to complete the
knots by drawing the shuttle thread so as to interlock with the warp thread, and
tightening the knot.
Before the knots can be tightened the warp threads must be freed from the
fingers or points of the two finger bars, and cast off from the hooks, o, o. I have
already described the mechanism whereby the casting off from the finger bars is
effected, and I will now describe the means employed for casting off the cords or
threads from the hooks. Through two or more of the pieces forming the rear
portions of the raceways for the shuttles I make openings, r, running lengthwise of
the same from front to rear. In these openings are mounted the sliding rods, r¹,
and to these rods at the front of the rear fluted or toothed roller, P2, is secured the
cast-off bar, R, having a downwardly projecting lip, 2. The rear ends of the
rods, ¹, are secured to a bar, 73, which is secured to the upper ends of two
levers R¹, R, each pivoted at r, to a bracket, R³, secured to a cross bar or beam
of the frame. The lower ends of the levers, R', R2, are each provided with friction
rolls engaging cams, L*, L', on shaft L. A spring, 5, connects each lever with
the frame, so that the levers, R1, R2, and the cast-off' bar are held in their retracted
position when not actuated by the cams.
The cast off bar, R, remaining for a large portion of the time stationary between
the toothed roller P2, and the forwardly projected ends of the shuttle raceways
prevents the cords or threads from being drawn backward by the shuttle and caught
between the shuttles and said roller. A rigid bar or cord guard S, is located in a
like position with respect to roller, P¹, to effect the like function when the shuttles
move towards the latter.
Having now described the various parts constituting the mechanism which I
employ, I will proceed to describe the relative operation of the same during the
formation of netting thereby.
After the cords or threads are placed in position as herein described through the
tension device the let-off mechanism over the rod, b, through the eyes g³, the
eyelets, g, of the cord or thread carriers, and thence to the take-up mechanism so
as to be under the control of the latter, the first movement of the machine causes
the bar, E, to be moved rearwardly drawing off from the spools or bobbins a
sufficient amount of thread to form a single mesh. The cord or thread carrier
then performs its movements, wrapping the thread around the fingers h, and i, as
heretofore set forth; the hooks o, o, then rise and draw down the loop of warp
cord. The rollers, P1, P2, are next rotated and the shuttles passed through all of
the loops held by the hooks except one. If the shuttles are in the position shown
in Figure 3, the shuttle will pass through the loops drawn down to the left of the
centers of the same. The bar, E, of the let off devices will then be permitted to
move forward and loosen the cords.
The movable finger bar, the cast off bar, J, will then be actuated, and the warp
cords or threads cast off from the finger bars, the hook cast off, R, is next moved to
remove the warp threads from the hooks, o, o.
The let off has previously moved forward and slackened the warp cords, and as
the cords are cast off from the fingers, h, and i, the loops held by the hooks o, fall
below the points of the same and are moved forward free from the hooks by the
cast off. As soon as the warp cords have been cast off from the hooks, o, o, the
take-up mechanism acts rapidly to take up the slack of the warp and tighten
the knots. At the same time the bar, D, of the tension device is rocked, and the
weighted levers caused to grip the warp cords so that they are drawn taut by the
take-up mechanism and the knots tightened. While these parts are effecting this

page_text: result the cord carriers, g, are returned to the position shown at 1, Figure 12, ready
to commence the formation of a second series of knots.
When the cast off bar, J, is moved downward the pins connected therewith cause
the angular levers, 3, on the points, , to turn on their pivots permitting the
points, i to rise and the loops wrapped around these points to fall therefrom. The
movement of the take-up mechanism is completed before the cast-off bar, J, and
the movable points, i, return to their former position, and as the warp cords are by
this time drawn taut as the cast off bar, J, and fingers, i, resume the required
position for the next knot the warp cords will be again engaged and held up by the
short arm of the cord levers, i³.
The loop of the warp thread through which a shuttle thread has not been passed
will be drawn back by the act of taking up the warp and the cords made straight
and taut but without a knot.
The next series of movements for forming another series of knots will be the
same, except that the shuttles will this time move from front to rear of the machine
and will pass through the loops to the right of the centers of the shuttles and the
selvage cord on the left of the fabric be left without a knot.
Instead of having the shuttle actuating rollers provided with a continuous grooved
or toothed periphery I may provide the shafts with a gear for each shuttle, as
shown at P, Figure 5.
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 :-
1. The herein described netting machine having two finger bars with the fingers
of one arranged opposite the fingers of the other with a space between, and a cast
off mechanism.
2. The herein described netting machine organized with two finger bars, one
movable and the other stationary, the fingers of one arranged opposite those of the
other, with a space between, a cast off mechanism, and the cord carriers.
3. The herein described combination of the finger bar having the fingers provided
with recesses in one edge thereof, with another finger bar with its fingers opposite
those of the first bar, with a space between, and the hooks and hook frame.
4. The herein described finger bar for netting machines having its fingers provided
near their lower ends with concave edges and above with a recess in one edge.
5. The herein described combination of the movable finger bars, the cord levers
and the cast off bar carrying pins engaging the cord levers.
6. The combination hereinbefore set forth, of the stationary finger bar, the
movable finger bar, having fingers extending below the fingers of the stationary
bar and the cast off bar.
7. The tension device consisting of the rock shaft and the weighted tension levers,
and means for actuating the rock shaft, substantially as described.
8. The herein described netting shuttle having at one end a point in line with
one side and at the other end a point in line with another side, substantially as
described.
9. The herein described netting shuttle having at one end a point in line with
one side and at the other end a point in line with the opposite side.
10. The combination hereinbefore set forth, of the knotting hooks and the sliding
hook cast off.
11. The combination hereinbefore set forth, of the divided shuttle bed, the shuttle
operating gears, the cord guard and the hook cast off.
12. The combination hereinbefore set forth, of the finger bars, the shuttle bed,
raceways located in a vertical plane between the vertical plane of the fingers, the
shuttles each having a point at one end in line with one side and a point at the
other end in line with its opposite side, and knotting hooks.
13. The combination hereinbefore set forth, of the cast off bar, the toggle levers,
the sliding rod and the link connecting the rod and toggle levers.

page_text: 14. The combination with the shuttle bed of the hook cast off bar and sliding
rods supporting said bar and sliding in the bars forming the shuttle race-ways,
substantially as described.
15. The combination with the take up mechanism of the warp cord tension,
consisting of the rock shaft and weighted tension levers, and means for operating
said rock shaft, substantially as described.
16. The herein described combination of the movable finger bars, the cord levers
and a device for tripping said levers.
17. The herein described combination of the stationary and movable finger bars,
a cord supporting device attached to each of the fingers of the movable bar, the
shuttle bed having race-ways, shuttles constructed to travel in said race-ways, the
knotting hooks and a cast off mechanism, the latter being connected to and actuating
the cord supporting devices.
18. The herein described combination of a finger provided with a movable cord
supporter and a cast-off device operating the cord supporter.
Dated this 16th day of June 1891.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.