Year: 1885

page_text: I JAMES CARVER, of Alfred Street Mills, in the town and county of the town of
Nottingham, Machinist do hereby declare the nature of this invention to be as
follows:-
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Each machine consists of the following parts, a pair of standards at each end
of the machine, and as many intermediate standards as the length of the machine
requires. The standards carry bearings for a roller covered with wire card,
commonly called a porcupine roller" this roller is carried by a bearing at each
end, and one or more intermediate bearings, according to the length of the machine,
above this roller, the end bearings are slotted and receive the ends only of a work
roller, placed above the porcupine roller, the latter roller is caused to slowly revolve
by the intermittant action of an adjustable driver upon a toothed wheel at one end
of the roller, or upon one of a series of toothed wheels geared to the roller, the
driver is operated by a cam or its equivalent. The revolution of the porcupine
roller causes the fabric as fast as it is made to be wound upon the work roller
above it by friction, as the diameter of the work roller increases, the ends of its
axle rise in the slotted bearings before named. By this arrangement of work
roller apparatus, an unvarying take up of the fabric on the work roller is ensured,
without the workman repeatedly changing a toothed wheel, as the diameter of the
work on the work roller increases, which was heretofore necessary.
The standards support a face bar of suitable length. Below the face bar are
a front point bar, and a back point bar, each bar has the requisite movements
communicated to it by levers and links from two rocking shafts which are operated
by cams, carried by two short shafts at the front and at the back of the machine,
which are caused to revolve by toothed gearing wheels secured on them, and a
main driving shaft at the back, the length of the machine; the driving shaft may
carry driving pulleys, and be driven direct, or may be geared to an auxiliary shaft
carrying driving pulleys. Point bars so operated dispense with the overhead cam
shaft, and levers and. links, which heretofore prevented the workman having easy
access to the centre of the machine, and affords more room for the work.
Below the comb bars are four toothed locker rollers formed of steel throughout,
each driven at each end by a toothed quadrant, operated in the usual way. Each
rolling locker bar rides on a requisite number of bearings, each formed of "phosphor
bronze," instead of as heretofore riding on the brass cradles. Between each pair

page_text: of locker rollers is a comb bar carrying leads of combs. The back comb bar can
be moved from the centre if required, and the front comb bar has a longitudinal
traverse given to it, by cams and levers in the usual way. But instead of it riding
on the flat surface of the cradles as heretofore, I provide each cradle with a trough
or troughs, each of which contain a number of steel balls upon which the front
comb bar rides, thereby dispensing with the friction on the said surfaces, and
enables the workman easily to move the bar towards the front of the machine in
order to obtain access to the bobbins, carriages and thread guides.
The bobbins and carriages, thread guides, sley or sleys and warp beam or beams,
are of the usual construction. Traversed net making machines constructed as
above described enables me not only to build machines considerably wider than
heretofore, but they work smoother, with less vibration and can be driven at a
much greater speed, and consequently produce a larger quantity of work than
machines of previous construction.

page_text: I JAMES CARVER of Alfred Street Mills in the Town and County of the Town
of Nottingham Machinist do hereby declare the nature of my invention and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :—
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a front view of two pairs of standards between each of which
the cams and crank required to give motion to the several parts of the machine
are placed between the pairs of standards one intermediate standard is shown.
Figure 2 is a vertical sectional view of the machine showing the front point bar
.at its highest point and the back point bar at its lowest point, with the operating
cams, links and levers in their several relative positions.
Figure 3 a half sized sectional view of various parts of the machine and
Figures 4 to 9 inclusive are half sized views of certain roller bearings each
severally referred to hereafter.
The several corresponding parts in each figure are indicated by the same letters
where necessary.
Each machine consists of the following parts namely, a pair of standards A at
each end of the machine and as many intermediate standards B as the length of
the machine requires, the standards B are placed at about equal distances from
each other, two of the standards A support a bearing A¹ in which the axle of a
roller C covered with wire card " commonly called a porcupine roller" revolves,
this roller is also supported by one or more other bearings each secured to one of
the intermediate standards B, above the porcupine roller the bearings A¹ are slotted
to receive the ends of the axle of a work roller C¹ the roller C is caused to slowly
revolve by the intermittant action of an adjustable driver upon a toothed wheel
secured on the right projecting end of the axle or upon one of a series of toothed
wheels geared to the roller, the driver and gearing are not shown in the drawings,
being those usually employed for operating a work roller, the driver is actuated by
a cain C shown at Figure 1.
The revolution of the porcupine roller causes the traversed net as fast as it is
made to be, wound upon the work roller C₁ above it by friction the net being
passed from the face bar under and round the back of the porcupine roller and
between it and the work roller in the direction indicated by the arrows shown at
Figure 2, as the diameter of the work increases on the roller the ends of its axle
rise in the slotted bearings A¹ before named, and affords considerable more room
for the net and avoids the necessity of having to cut the net off in short lengths
as heretofore.
By such arrangement of work roller above the porcupine roller an unvarying
take up of the net is insured without the attendant having to frequently change
a toothed wheel as the diameter of the net on the work roller increases, which was
heretofore necessary,

page_text: The two inner standards A have the ends of a face bar D secured to them, the
bar is also supported by brackets D¹ each of which is secured to the top of an
intermediate standard B shown at Figure 1.
Below the face bar are a front point bar E and a back point bar E¹ each pro-
vided with leads of points of the usual construction, each bar alternately has
the requisite movements communicated to it to cause the points to enter the
threads above the tops of the carriages then rise up to the lower edge of the face
bar, draw clear out, be lowered, and the movements repeated, by the following
means.
Each pair of standards A support bearings in which two short shafts F and F¹
revolve, each pair of shafts are geared together so as to revolve simultaneously,
by each shaft having a toothed wheel F secured on its outer end, "shown by
circular dotted lines at Figure 2" the back wheels gear into and are driven by
toothed spur wheels F secured on a main driving shaft F which revolves in a
bearing formed at the back of each standard and is provided near the left end
with driving pulleys Fs the outer end of the shaft is provided with a fly wheel F
and revolves in a bearing standard B¹. The whole of the standard are bolted at
the bottom to two longitudinal floor plates B³, B³.
Between each end pair of standards A, the driving shaft forms a crank F
hereafter referred to.
To the front and back of each of the standards A, and B, bearings are secured
in which two upper shafts G and two lower shafts H rock, each of the upper shafts
have two truck bearing levers G¹ secured on them next each end standard A, each
shaft being rocked by two cams G' each short cam shaft carrying one cam, a side
view of one such cam is shown at Figure 2A.
"
Each of the lower shafts H have two truck bearing levers H¹ secured on them
each shaft being rocked by two cams H each cam shaft carrying one such cam.
The requisite movements of each point bar is effected by six or more sets of arms,
links and levers, placed at about equal distances from each other between the inner
standards A, one such set is shown at Figure 1 and one set to each point bar at
Figure 2," each set consists of an arm Q³ having its inner end secured to the point
bar, and its outer end binged to a lever G' secured on the rocking shaft G, inter-
mediately of the bar and lever the arm is connected to a link G³ having its lower
end hinged to an arm H³ secured on the shaft H, the rocking of the shafts G and H
combined producing the requisite movements of each point bar alternately. By
operating the point bars by apparatus as above described I am enabled to dispense
with the overhead rocking shaft links and levers which heretofore prevented the
attendant having easy access to the centre of the machine.
Instead of the comb bars riding upon the flat surface of the cradles as heretofore
I provide each cradle with a double trough I shown in section at Figures 2 and 3,
in side view at Figure 4, and in plan at Figure 5, one such trough is secured on
the cradle of two of the standards A, and on the whole of the intermediate
standards B, each trough contains a number of steel balls J which project slightly
above the top of the trough, upon these balls, bearings K ride clear of the troughs,
an end view of one such bearing secured to a comb bar L is shown at Figure 4, in
plan at Figure 5 and a front view at Figure 6, the comb bar L is adjusted to a true
line by means of set screws and lock nuts K¹ shown at Figure 6.
The back comb bar can be moved by the attendant from the centre towards the
back of the machine if required and the front comb bar has a longitudinal traverse
given to it by a lever connected to a bar L¹ at the right end of the machine the
lever being operated by a cam in the usual way, by employing the troughs and
steel balls as above described the friction of the comb bars upon the surface
of the cradles is dispensed with and the attendants are enabled by means of
hand levers of the usual construction to easily move the front comb bar towards
the front of the machine, in order to obtain access to the bobbins, carriages and
thread guides.

page_text: The front comb bar is carried by a two joints L' one near each end and the
back comb bar by two joints L' both pair of joints rock upon a centre axle L* in
the upper ends of the two pair of standards A, each comb bar is provided between
the inner standards A with leads of combs L of the usual construction, shown in
side view only at Figures 2 and 3.
Below the combs are four toothed locker rollers M formed of steel throughout, each
driven by a toothed quadrant N each operated by a link N¹ attached to it, the
lower end of each link being connected to one of the cranks F7 on the driving
shaft F.
There are two locker rollers to each comb bar, the ends of the two rollers at the
front revolve in and are carried by bearings M¹ secured to the front and back of
the front comb bar, and the ends of the two rollers at the back revolve in and are
carried by like bearings secured to the front and back of the back comb bar, in
addition to which each roller rides on four or more bearings M end views of which
are shown at Figures 4 and 8, and a front view of one such bearing at Figure 9,
these bearings are secured in pairs to the comb bars, upon which they are adjusted
by set screws and lock nuts M³, the screws being screwed into plates M* secured to
the bottom of the comb bars.
The whole of the bearings M1 are each formed of Phosphor Bronze and are
placed at about equal distances from each other between the inner standards A,
in these bearings the steel locker rollers ride instead of as heretofore riding on
brass bearings.
The bobbins and carriages, thread guides, sley or Bleys, and warp beam or beams.
are of the usual construction.
Traversed net making machines constructed as above described in consequence
of their being no cams either above or below the net on the machine, the work
cannot be damaged or discoloured by oil getting on the threads, and there is not
any thing in the way to prevent the attendant from seeing any defects in the
work quite across the machine, such construction enables me not only to build
machines considerably wider than heretofore, but the machines work smoother and
with less vibration, and can be driven at a much greater speed and consequently
produce a larger quantity of work than machines of previous construction.
I am aware that cams and cam shafts in pairs have been employed between
pairs of standards at the ends of curtain making machines but I am not aware
that the same arrangement has been employed in machines making traversed net.
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:
1st The construction and employment of steel locker rollers carried by inter-
mediate bearings of Phosphor Bronze in a traversed net making machine substantially
as described and illustrated in the drawings annexed.
2nd The construction, arrangement, and employment of four short cam shafts
and cams between the two end pairs of standards to communicate the required
movements to the several operating parts in a traversed net making machine
substantially as described and illustrated in the Drawings annexed.
Dated this comentanuth da- ^£ U…. 1000