IMPROVEMENTS IN MACHINES FOR THE MANUFACTURE OF WIRE-NETTING
Year: 1883

page_text: LETTERS PATENT to Herbert John Haddan, of the Firm of Herbert and
Company, Solicitors of Patents, of 67, Strand, in the City of Westminster,
Civil Engineer for an Invention of IMPROVEMENTS IN MACHINES FOR THE
MANUFACTURE OF WIRE-NETTING communicated to him from abroad by
E. Kretschmann, of Leipzig, in the kingdom of Saxony
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at
the Office of the Commissioners of Patents on the 16th November 1883.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer, "IMPROVE-
MENTS IN MACHINES FOR THE MANUFACTURE OF WIRE-NETTING," a communication
to me from abroad by E. Kretschmann, of Leipzig, in the Kingdom of Saxony,
-
This invention relates to machines for the manufacture of wire-netting composed
of hexagonal cells or meshes.
The improved machine comprises a system of working spindles formed of semi-
cylindrical parts which cover each other in pairs and are adapted to rotate together
in order to perform the meshing process. The upper spindles (namely one of each
pair) carry bobbins from which the wire intended to form one part of the fabric is
wound off, while the lower spindles (one of each pair) are perforated at their rear
end, and receive the wire from a group of vertical or inclined bobbins secured to
the rear end of the machine frame.
The lower spindles are secured in fixed bearings and carry in front a semi-
cilindrical meshing head, while their rear portion is completely cylindrical, turns
in a cylindrical bearing and carries a pinion.
Over the pinions.is situated a rack adapted to be moved to-and fro perpen-
dicularly to the spindles by a crank and connecting rod, thereby imparting to the
pinions a predetermined number of revolutions which corresponds to the number
of convolutions of the wires at the place where they are entwined or twisted
together.

page_text: In order to produce the entwining or intermeshing of contiguous wires, the
frame carrying the upper spindles is adapted to be shifted for a distance equal to
the distance of contiguous spindles (or pitch of the same) which varies with the
width of the meshes to be produced, so that a semi-cylindrical spindle of one set
covers alternately a spindle of the other set at the right and at the left, and rotates
with the same.
In front of the meshing heads and perpendicularly to the spindles is situated a
pair of drawing and transporting rollers adapted to be moved to-and fro (perpen-
dicularly to the spindles) simultaneously with the spindle-carrying frame already
mentioned, by means of a crank and connecting rod.
After a mesh is completed, the fabric is drawn forward for the width of a mesh,
for which purpose the transporting rollers receive a periodical rotary motion by
means of a crank disc of variable radius and a slotted lever which carries a pawl
for turning a ratchet wheel mounted on the shaft of one of the transmitting
rollers.
The feed-motion of the fabric takes places during the periods of rest of the
spindles.
In order to maintain a certain tension of the fabric the winding roller is provided
with a tension mechanism comprising chiefly a weight which tends to turn the roller
so as to stretch the fabric. The weight may be suspended from a rope wound upon
a drum which is connected with the roller shaft by means of spur wheels, and a
ratchet mechanism.
In order to produce the selvedge of the fabric a double spindle is placed at each
side of the frame, said spindle taking up two wires instead of one, and twisting the
same together.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
"
the said Herbert John Haddan in the Patent Office on the 16th May 1884.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer IMPROVE-
MENTS IN MACHINES FOR THE MANUFACTURE OF WIRE-NETTING," a communication
to ne from abroad by E. Kretschmann, of Leipzig, in the Kingdom of Saxony,
T
This invention relates to machines for the manufacture of wire-netting composed
of hexagonal cells or meshes.
In the following description reference will be made to the accompanying drawing,
of which Fig. I is a front elevation, Fig. II a plan, Fig. III a cross section and
Fig. IV an end elevation of a machine embodying the invention.
The improved machine comprises a system of working spindles 8 and 8¹ formed
of or with semi-cylindrical parts which cover each other in pairs and are adapted
to rotate together in order to perform the meshing process.
The spindles 8 carry the bobbins t from which the wire intended to form one
part of the fabric is wound off, while the spindles 8¹ are perforated at their rear
and receive the wire from the bobbins r which may be inclined or vertical.
The spindles &¹ are secured in the fixed bearing R, and carry in front the semi-
cylindrical meshing head, while their rear part 811 is completely cylindrical, turns
in corresponding bearings and carries the pinions a.
Over the pinions a is situated the rack B moved to and fro by the crank C and
connecting rod C₁ whereby a predetermined number of revolutions is imparted to
the pinions a which corresponds to the number of convolutions of the wires at the
place where they are entwined or twisted together.
In order to produce the alternate entwining or intermeshing of the contiguous
wires, the upper frame S, carrying the half cylindrical spindles s holding the
bobbins, is adapted to be shifted for a distance equal to the distance of two
contiguous spindles (or pitch of the same) which varies with the width of the
meshes to be produced, so that the upper and lower semi-cylindrical meshing
spindles cover each other alternately at the right and at the left and rotate
together.
In front of the meshing heads and perpendicularly to the spindles are situated
the drawing and transporting rollers W, W', which are moved to and fro, together
with the frame S, to which this motion is imparted by means of the crank A and
the connecting rod A¹ attached to the slotted link A" and for which purpose the
bearings of the rollers are adapted to slide on the frame.
After a mesh is completed, the fabric is drawn forward for the width of a mesh,
for which purpose the transporting rollers receive a periodical rotary motion
determined by the size of the meshes; this rotary motion is imparted by means of
the crank dise M mounted on the shaft D and carrying the adjustable pin m, and
by means of the slotted lever N and ratchet wheel Ŏ. The feed motion of the
fabric takes place during the periods of rest of the spindles.
In order to maintain a certain tension of the fabric, the winding roller P is
provided with a tension mechanism consisting chiefly of a weight adapted to turn
the roller P so as to stretch the fabric and which determines the uniforın feed of
the wire from the bobbins and rollers as well as the uniform size of the meshes.
The tension mechanism consists of the weight Q suspended from a rope wound
upon the drum U which is connected with the roller shaft by means of spur-
wheels V, pawl x and ratchet wheel X. This tension mechanism which must be
wound up from time to time may be replaced by a suitable spring mechanism.

page_text: In order to produce the selvedge of the fabric, a double (or multiple) spindle E
is placed at each side of the frame, each of which spindles carries two (or more)
bobbins of wires instead of one, and twists the wires together by its rotary
motion.
The rotary motion of the selvedge spindles is imparted by means of the wheels 5
b, b, b, c, c¹, and the shaft d.
The machine may be arranged to produce meshes of various sizes and fabrics of
various widths, and it may be operated by hand or by engine power.
In machines for the manufacture of wire-netting:
The use of semi-cylindrical working spindles, arranged in pairs of super posed
spindles 8, 8¹, adapted to be shifted relatively to each other and to be turned
together.
The combination of the upper spindles 8, with a reciprocating frame S adapted
to set the spindles in motion.
The combination of the spindles, with pinions a, and a reciprocating rack B
adapted to impart rotary motion to the spindles.
The combination of rollers W, W¹, with means for shifting the same lengthways
(parallel with their axis) in proportion to the width of the meshes or loops
and to the progress of the manufacture.
The combination of the winding roller P, with a mechanism Q, U, V, X, x,
adapted to draw the wire from the spools and to stretch the fabric not yet
wound up.
The use of the spindles E set in motion separately and carrying several wire
spools for producing the selvedge of the fabric.
The whole substantially as described and illustrated.
In Witness whereof I, the said Herbert John Haddan, have hereunto set my
and and seal this 16th day of May A.D. 1884.
H
T HADDAN