AN IMPROVED PROCESS OF MANUFACTURING BARBED FENCING AND APPARATUS THEREFOR to
Year: 1884

page_text: I PHILIP MIDDLETON JUSTICE of 55 and 56 Chancery Lane in the County of
Middlesex, Fellow of the Institute of Patent Agents do hereby declare the nature
of the Invention for AN IMPROVED PROCESS OF MANUFACTURING BARBED FENCING
AND APPARATUS THEREFOR to be as follows :-
This Invention relates to the automatic manufacture of what is known as
barbed strip fencing, such manufacture being carried out by means of the
apparatus hereinafter described. In a suitable frame is mounted the main shaft
which carries the driving pulley and also two eccentrics from one of which rises a
lever or connecting rod which by means of a ratchet wheel and pawl so operates
the feed rolls that the band or strip to be cut is held stationary while the knives
or dies operated by the second eccentric and its connected lever are cutting out
the blanks and on the said knives or dies rising clear of the strip, feeding the same
forward the requisite distance so that the second and subsequent cuts, will leave
the band with barbs or serrated edges as it issues from the machine. The band
may be cut upon one or both edges which are preferably of thinner material than
the central core, while for rapidity and economy in manufacture, it is preferred
to use strips or bands with outer webs and two or more inner cores connected by.
other thin webs, the knives or dies being arranged to cut not only the outer webs
but also those between the cores, the latter being so cut that the serrated edge of
one web reaches nearly to the other core and between two of the barbs formed
thereon, the pieces cut out to make this class of point or barb being of rhomboidal
form. When the completed strip is to be used as fencing, the core is twisted so as
to present the barbs or points in various directions.
2
1
1
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100

page_text: Figure 8 a sectional elevation on the line o. d.
Figure 4a sectional elevation on line a. b. Fig. 2 of the apparatus employed.
Figures 5, 6 and 7 represent in end sectional elevation, the form of strips
generally employed.
Figures 8, 9 and 10 represent the strips after being cut, and
Figures 11, 12, and 13 represent said cut strips after being twisted.
In a suitable frame is mounted the main shaft i, which carries the driving
pulley h and also two eccentrics e and f from the first of which (e) rises a lever or
connecting rod which is connected by a species of ball socket joints to the lever k
above it, whereby the latter upon the rotation of the shaft i has, communicated to
it a reciprocating up and down motion, so that the knife m secured to the inner
end of the lever will move past the lower fixed knife n, and thereby cut the
metal strips lying between said knives or dies, and at once produce the barbs. The
second eccentric f on shaft i, by means of rod p ratchet wheel t on shaft u and
pawl q, so operates the adjustable feed rolls B that the band or strip A to be cut is
held stationary while the knives or dies m n operated by the eccentric e and its
connected lever k are cutting out the blanks, and on the said knife or die m rising
clear of the strip, feeding the same forward the requisite distance so that the second
and subsequent cuts will leave the band with barbs or serrated edges as shown in
Figs. 2. 8. 9 or 10 as it issues from the machine. The band may be cut upon one
or both edges which are preferably of thinner material than the central core as
represented in section in Figs. 5 and 6, while for rapidity and economy in
manufacture it is preferred to use strips or bands with outer webs and two or
more inner cores connected by another thin web as represented in Figs. 5 and 8,
the knives or dies being arranged to cut not only the outer webs but also those
between the cores, the latter being so cut that the serrated edge of one web reaches
nearly to the other core, and between two of the barbs formed thereon, the pieces
cut out to make this class of point or barb being of rhomboidal form as represented
in Figs. 8 and 10.
When the completed strip is to be used as fencing, the core is twisted so as to
present the barbs or points in various directions as represented in Figs. 11, 12
and 13.
Having thus described the Invention as communicated to me from abroad by my
foreign correspondent what I claim and desire to secure by Letters Patent is
1* The improved process of manufacturing barbed fencing bereinbefore described
which consists in cutting or punching out from metal strips the necessary material

page_text: so as to leave a series of barbs or points integral with said strip, said process being
carried out by means of the improved machinery or apparatus substantially as set
forth.
2nd In apparatus for manufacturing barbed fencing the combination with the
mechanism for automatically feeding forward and holding the strip, of the
mechanism for cutting or punching out the necessary material to form the finished
barbed fencing substantially as described.
3rd In apparatus for automatically manufacturing barbed fencing, the combination
with shaft connecting rod r. and lever k of knives or cutters m. n arranged and
operating substantially as, and for the purposes set forth.
Dated this First day of May ATTOR1
PHILIP M. JUSTICE.