IMPROVEMENTS IN STRAIGHTENING, PUNCHING, BARBING, COILING, OR CUTTING INTO LENGTHS METALLIC WIRE, MORE ESPECIALLY OF THE TWO-HEADED-RAIL SECTION, AND IN APPARATUS OR MACHINERY APPLICABLE THEREFOR, PARTS OF WHICH INVENTION ARE APPLICABLE FOR PUNCHING LONG SLOTS IN OTHER MATTERS THan Wire
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by Robert Pemberton at the Office of
the Commissioners of Patents on the 22nd September 1881.
ROBERT PEMBERTON, junior, of Warrington, in the County of Lancaster.
"IMPROVEMENTS IN STRAIGHTENING, PUNCHING, BARBING, COILING, OR CUTTING
INTO LENGTHS METALLIC WIRE, MORE ESPECIALLY OF THE TWO-HEADED-RAIL
SECTION, AND IN APPARATUS OR MACHINERY APPLICABLE THEREFOR, PARTS OF
WHICH INVENTION ARE APPLICABLE FOR PUNCHING LONG SLOTS IN OTHER
MATTERS THan Wire."
This Invention was specially designed for making a kind of patent barbed wire
fencing, and as by describing my experimental machine for this purpose I can best
set forth my Invention, I give the following description
=
The wire to be straightened, punched, barbed and coiled is coiled on a reel at
one end of the machine. From this coil it passes to two sets of straightening
rollers, thence over a punch, to be hereafter more particularly described, worked by
cam or eccentric on the driving shaft; then through mechanism which insert a
steel ribbon into the punched hole; then between dies which cut off the pieco of
ribbon and stamp it into the desired barb form, pressing the barbs alternately to
one side or the other so as to cause them to project out all round the wire nearly
equally apart; passing on from this stamping and pressing apparatus, it passes
into a pair of jaws worked from a crank pin or eccentric, or preferably a pin fixed
in the slot of a revolving disc in such manner that the crank throw can be
regulated exactly by screw or otherwise and graduated scale. These jaws open
when being propelled towards the stamping apparatus, but close with a tight grip
on the wire when being drawn in the other direction, drawing the wire with them.
This drawing of the wire takes place after the punching, shearing, and pressing has
been accomplished and before the punch again enters the wire. From this the wire
is led to u reel, where by a ratchet motion it is wound up. Going back to the
punching apparatus,
In making wire fencing of this character the great trouble has been to punch
a long narrow slot without great wear and tear on the punches. Punches as
ordinarily made are very expensive, and the forging and truing of a new punch

page_text: every time one breaks made the operation of punching very expensive. Now I
get over this by forming my punch of a piece of steel band of the right size to
form the slot, making it slightly pointed like a drilling tool and placing it between
two blocks of steel projecting just sufficiently to make the punching. If the blade
breaks it is a very small matter to reverse it or file it up again or replace it with t
another. Both this punching apparatus and the succeeding mechanism are driven
by cam or other convenient motion from the main driving shaft or a vertical
shaft driven therefrom and carrying one of the reels. Instead of the jaw apparatus
an intermittent motion could be given to the receiving coil, and this latter could
draw the wire through, but I much prefer the separate mechanism as it otherwise ]
entails a strain on the coil. If the wire has to be cut in lengths instead of being
punched and barbed after it passes through the rolls and the jaws it comes under
shears that are worked from the same driving apparatus and that cut it off in such
lengths as the jaw apparatus shall have been set to feed at each stroke.
In machines specially adapted for cutting and straightening wire a set of change
wheels are used intermediate between the feed motion pin and the main driving
shaft, so that the lengths can be adjusted to any required amount.