Improvements in Wire Drawing Machines.
Year: 1897

page_text: Date of Application, 25th Jan., 1897-Accepted, 27th Feb., 1897
COMPLETE SPECIFICATION.
Improvements in Wire Drawing Machines.
1, HERMANN LANGEN, of Duisburg, Rhenish Prussia, Germany, 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 invention relates to wire drawing machines and it has for its object to
provide safety devices, for the drawing benches, which set the machine out of
gear, when the wire happens to break and also when it gets in disorder on the
reel; auother object in view is to provide the machine with an improved gear for
coiling up the thin wire directly on bobbins ready for the market, as it comes from
the last drawing disc or drum.
Accordingly my invention consists of a combination of devices by means of
which the objects in view can be realized, i.e. first in the arrangement of two fixed,
horizontal, grooved guide rollers and a third movable intermediate guide roller.
The wire coming from the reel is carried round one fixed, then round the movable
guide-roller, then round the other fixed one and from there it goes to the first
drawing-iron and consecutively to the first drawing pulley and thence to the
following set of drawing irons and second set drawing pulleys. The movable
guide pulley mentioned is turning on a vertical pivot which stands upon a horizontal
lever, articulated at one end, and pulled to the side away from the reel, by the
action of a suitable weight hung to a string, laid round a pulley and fixed to the
horizontal lever. The front end of the latter is connected to a belt shifting
device which disengages the driving gear of the draw-bench and consequently
stops the machine, when the wire gets entangled on the reel, because then the
wire is exposed to a stronger tension than that caused by the pull of the weight
and thus the lever with the guide-pulley is shifted to the side and disengages the
driving gear.
In order however to make the machine complete in every respect it is necessary
that it will be set out of gear also, when the wire breaks, not only when it gets
entangled on the reel, and the device designed for this object consists in a light
double armed lever articulated on a horizontal pin in a little standard near to the
second drawing drum.
The free end of this lever carrying a small roller and weighted by a small
regulating weight movable thereon, and said roller touching just slightly the
wire from above in a place between the last drawing iron and the last pulley or
drawing drum. The other end of said double armed lever has a projection holding
the heavier end of a crank lever which reaches up from under the table through a
slot in the same while the other arm has a projection supporting a weight fixed to
the upper end of a vertical lever and preventing it from falling downwards to
one side. The upper weighted end of the vertical lever is connected to the
above named disengaging gear by a string, so that when the weight falls, it
moves said gear and therefore stops the bench in a similar manner as before
described.

page_text: By furnishing the drawbench with this double safety device so, that it will be
stopped in either case, one man is enabled to superintend a great number of
machines, and a large saving in labour and increase in efficiency is the result.
Now the wire coming from the last drawing iron may be wound up either in large
rings on the drawing drum or it may be wound up directly on small spools or
bobbins ready for sale. In order to do the latter I provide the machine with a
special coiling device.
This device consists of a vertical shaft turning with a rotating bush journalled in
a bearing in the table and driven by gear wheels; said vertical shaft or spindle,
being moved up and down vertically and capable to rotate, carries a ring at its
lower end connected to a fork of an adjustable lever deriving its up-and-down
movement from an excentric driven by a worm and worm-wheel gear upon the
vertical shaft driving the drawing drum.
On the upper end of the first named vertical shaft or spindle is stuck a spool
upon which the wire is coiled in regular windings when the spindle is rotated and
simultaneously moved up and down.
The necessity of winding the wire upon a winding-up drum before being able to
spool it on bobbins is therefore avoided.
The accompanying drawing illustrates a wire drawing bench provided with the
improvements of my invention :
Fig. 1 is a longitudinal view of the draw bench and the spooling device.
Fig. 2. is a vertical section along line I-I of Fig. 1 seen from the left side.
Fig. 3. is a plan of Fig. 1.
Fig. 4 is a detail view and vertical section of the spooling device in enlarged
scale.
The stop motion actuated by the wire coming from the reel and going to the
drawing irons is seen on the left of Figs. 1 and 3. The fixed guide-pulleys A
and B, turning loose on pivots fixed on the table C of the bench and a movable
guide-pulley D which is turning loose on a pivot fixed on a horizontal lever F
articulated at G at the underside of table C, wherein an opening H allows side-
movement of said guide-pulley D, serve to guide the wire J which comes from the
reel K and goes to the drawing pulley L and the drawing irons L'.
A weight F and a string F which is fixed to one side of the lever F and hangs
down over a roll F3 so as to exercise a constant pull on the lever F and guide-
pulley D, are tending to move the lever away from the reel. When the wire
gets entangled on the reel, it does not come off freely and the pull exercised on the
wire by the weight is overcome, the weight F2 is raised and the lever F is moved
therefore to the left and strikes against a vertical arm C³ of a horizontally guided
bar C', to which is connected the belt-shifter C² or disengaging gear which
consequently stops the bench directly.
The device for setting out of gear the machine, when the wire breaks during the
wire-drawing process, is arranged on the right side of the machine as seen in
Figs. 1 and 2 and Fig. 3.
A standard S supports a balance lever S' carrying at one end a light roller S'
held just above the wire coming from the last drawing iron and going to the
drawing drum K₁ and by an adjustable weight S³ the pressure exercised on the
wire is regulated. The other end of lever S₁ has a projection S* holding the upper
end of the upright branch T of a balance lever T' articulated in a hanger T under
the table. The outer horizontal arm T3 of the balance-lever forins a support for
a weight Vfixed to the upper end of a lever U and abutting against a fixed
stop V limiting its stroke to the left; the lever U being articulated in a support U¹
of the draw bench, the brauch Ts hinders this weight to fall and to turn the
lever U down to the right; a string V₁ attached to the weight is connected with
a horizontal double-armed lever P, articulated on a vertical pin P₁, (see left side
of Figs. 1 and 3) under the table C so that the front end of said lever P is just
leaning against a vertical arm C₁ of the guided bar C¹ previously mentioned and

page_text: capable of shifting this guide-bar to stop the motion, as will be understood from
the following:
When the wire breaks on its way to the drawing drum K¹, the tension of the
wire is suddenly released, and the small roller S' is no more sustained by the wire;
it sinks down and turns the balance lever S', so that the projection S₁ leaves the
upper end T of lever T' and the latter falls down, thus lifting its branch T³ and
so allowing the weight V to fall also and to exercise a pull on the string V¹ by-
which lever P is moved sidewaye and shifts the guide-bar C' so as to stop the
motion of the drawbench automatically.
The spooling of the wire on the drawbench according to my invention is
accomplished in regular manner by the appliances shown in Figs. 1 to 4, as
follows:
A worm M on the vertical shaft M of the drawing drum K is geared to a worm
wheel M' fixed on a horizontal_shaft running in hangers N and provided at one
end with a grooved cam N'. Into the groove of the latter engages a pin O at the
end of a lever O' articulated in a pair of hangers O2 capable of being adjusted in
longitudinal bolt-slits in the table C, and so permitting, by aid of a series of pin-
holes in the lever O₁ to shift its fulcrum and to alter the ratio of the levers in order
to vary the stroke of the end 03 of the right arm of lever O'. This end 0³ is
forked and a ring Q with two pins Q¹ is held in the slits of the fork; in a
central bore of the ring revolves the lower end of a spindle R and by aid of this
ring said spindle can be moved up and down while it is held by a key and groove
in the revolving bush R' running in a vertical bearing R³ fixed in the table C.
The bush R' is rotated by suitable gear wheels W, W2 W³, the latter of which is
keyed to a vertical shaft W receiving motion from the main shaft W₁ by wheels W³-
and W.
The intermediate gear wheel W2 may be shifted on its spindle up or down, so
as to set out of gear the bush R' when desired in handling a lever X provided for
this purpose.
As will be easily understood, the wire coming from the drawing drum K' can
thus be regularly spooled on a bobbin Y stuck on the upper end of spindle R by
aid of the adjustable device described, revolving the spindle and at the same time
raising and lowering it.
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:
1. In a wire drawing machine in combination with fixed guide-rollers A and B
a movable guide-roller D guiding the wire to be drawn on its way from the reel K
to the drawing drum L, a lever F carrying said movable roller D upon a vertical
pivot, a loaded cord F running over a pulley F' and fixed with one end to said
lever F; a guide-bar C¹ having a belt guiding-fork C2 at one end and a downwardly
projecting arm C³ standing in the way of the lever F, the whole as set forth and
for the purpose specified.
2. In a wire drawing machine as specified in Claim One in combination with
the guide bar C a vertically projecting arm C a lever P pivoted upon a piu P³.
below the table C and bearing against the projection C₁; a string V¹ connected
with one end to lever P and with the other to a weight V at the top of an.
upright lever U, a two-armed lever T' supporting said weight V in its upright
position; a balance lever S¹ carried on a bracket S and being pressed down at one
end upon the wire by a weight S³ while the other end by a projection S* holds the
lever T in such a position that it can support the weight V of lever U, the whole
as illustrated and described.
3. In a wire drawing machine as specified in Claims One and Two in combina-
tion with the vertical drum shaft M a worm and worm wheel M¹ and M³, a
grooved cam N', a lever O' engaging with its pin O into the groove of cam N¹,.

page_text: a vertical spindle R raised and lowered by lever O¹ and held in a rotating bush R¹
journalled in a fixed bearing R³ and receiving motion from the main driving
shaft W by a bevel wheel W gearing into a similar wheel W' on a shaft W*, the
whole as described and illustrated and for the purpose specified.
6
Dated this 22nd day of January 1897.
HERMANN LANGEN,
Per Karl J. Mayer,
Agent.