Improvements in and relating to Wire-drawing Apparatus.
Year: 1898

page_text: Date of Application, 19th Feb., 1898-Accepted, 11th July, 1898
COMPLETE SPECIFICATION.
Improvements in and relating to Wire-drawing Apparatus.
I, ARTHUR RIBBERT, of Hohenbimburg, Westphalia, in the German Empire,
Engineer, 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 apparatus and has for its object to pro-
vide effective means for preventing the cutting of the drawing roller and for
arresting the motion of the drawing roller and winding drum on the breaking
of the wire.
My invention consists in the provision of an eccentric roller or part about which
the wire passes which upon rotation by suitable means from the main shaft causes
the wire to laterally slide along the periphery or peripheries of the drawing roller,
the drawing roller being provided with coned peripheries inclined in one direction
or the other, so that the cutting of the roller or the formation. of grooves there-
upon is precluded.
My invention further consists in means for arresting the motion of the winding
drum and of the drawing roller on the wire breaking by arranging the winding
drum loosely upon a vertical shaft deriving motion preferably from the main
spindle upon which the drawing roller is mounted, a driving or engaging arm or
arms being mounted upon the vertical shaft which contact with corresponding
parts provided on the winding drum in such a manner that upon the rotation of
the vertical shaft the pressure of the driving or engaging arm or arms against
the drum overcoming the tension occasioned in drawing the wire, effectively pre-
cludes the winding drum from falling out of engagement therewith, so
immediately the wire snaps or breaks the tension being thus released the drum
falls, and in falling causes the operation of suitable mechanism that disengages
a clutch holding the drawing roller in engagement with the main spindle and
thereby the discontinuance of the drawing of the wire.
that
My invention is illustrated in the accompanying drawings in which Figure 1
is a plan of a wire drawing apparatus in which my invention is embodied."
Figure 2 is a side part sectional elevation corresponding thereto, while
Figure 3 is a part front elevation, and
Figure 4 is a front elevation showing details of a clutch mechanism.
In carrying my invention into effect in the construction of a wire drawing
apparatus according to my invention I provide a frame A upon which I mount
transversely a spindle B upon which a stepped drawing roller B₁ is set freely.
Motion is conveyed to the spindle B by belting upon the fixed pulley C2 or by
other convenient means. The wire W to be drawn is arranged upon a reel D
and passes upon a pulley E through a corrosive bath U in which the pullies E E¹
E2 E are mounted and partly immersed, the wire passing through the first
hole in the die plate F thence completely around the smallest periphery of the
drawing roller B₁ and upon the guide roller G to the next pulley E', through the
bath and thence to the second hole to the die plate and so on, passing through
the series of holes in the die plate being gradually elongated and wound upon
the gradually increasing peripheries of the drawing roller B¹ and in turn to the

page_text: vertical winding drum H passing first however around an eccentric roller I pro-
vided upon a spindle J mounted in suitable bearings K K which spindle is driven
from the main spindle B by belting passing about a pulley. J mounted thereupon
and upon a corresponding periphery of the drawing roller B', the wire W like-
wise passing around a guide pulley and guide pulleys H2 H3 before passing to
the winding drum. The drawing roller B₁ is caused to rotate with the spindle B
by means of a clutch L normally in gear but capable of disengagement by mechan-
ism hereinafter to be described. Upon the rotation of the spindle B the drawing
roller 1 about which the wire is passed causes the wire to be drawn through the
respective holes in the die plate, while the eccentric pulley I about which the wire
passes on its rotation upon the spindle J causes an increase in the tension of the
wire upon the stepped drawing roller so that the wire is caused to pass laterally
along the respective coned peripheries upon each rotation or stroke of the eccentric
pulley. It will be thus understood that the wire on being drawn is caused to
slide down along the peripheries of the drawing roller and so the wire cannot
continually remain along one line on the respective peripheries. The cutting or
grooving and destruction of the roller that otherwise would result is thereby
avoided. The wire is caused to be wound upon the vertical winding drum H
which is freely mounted upon a vertical spindle N the rotation of which is
effected from the main spindle B by belting passing around inter-
mediate pullies 00 and pullies Cand 01 respectively fixed upon
the main spindle and the vertical spindle of the winding drum.
Motion is communicated to the winding drum H from the vertical shaft N in the
direction indicated by the arrow X by means of a driving engaging arm or
arms N N whose faces are preferably inclined so that the weight of the winding
drum may be partially borne thereby, upon the drum being lifted into engagement
therewith as illustrated in the drawings.
It will however be understood that the driving or engaging arm or arms are
maintained in engagement with the corresponding faces H H provided upon the
drum by the tension exercised in drawing the wire W from the drawing roller
so that immediately this tension is released upon the snapping or breaking of the
wire the drum falls by its own weight out of engagement with the engaging or
driving arms N¹ into position such as shown in dotted lines Figure 3, and its
rotation therefore ceases. In falling the drum depresses a rod or rods P P which
are mounted in suitable bosses within the frame A of the apparatus and may
preferably be connected together at their lower extremities by means of a cross
bar P to which are connected the extremities of levers Q R. The opposite
extremity of the lever Q being connected to a link S which in turn is connected
to a bell crank lever T operating the clutch L so that on the depression of the
rod or rods P the link S is uplifted and also one arm of the bell crank lever T
thereby withdrawing the sliding clutch L which normally secures the drawing
roller B to rotate with the shaft B upon which it is mounted. The lever R is pro-
vided as a foot lever which upon depression raises the rod or rods P thereby uplift-
ing the winding drum H into position for the engagement of the driving arms N' N¹
with the corresponding faces provided upon the drum.
It will be understood that the depression of the foot lever R effects the engage-
ment of the clutch L as well as the engagement of the winding drum and that
the fall of the winding drum causes the arrest of the driving roller so that upon
the breaking of the wire the apparatus automatically and positively stops.
It is obvious that I do not limit my invention to the actual disposition of the
eccentric pulley I in relation to the drawing roller illustrated as it is possible for
the pulley to be otherwise disposed to perform the same function and it is also
obvious that two or more such pulleys might be employed; while I do not limit
my invention to the construction of clutch and drum operating mechanism in
which two sliding rods are employed as such are capable of substitution by means
having the same function and effect such as one sliding rod and one lever to perform
the functions of two levers Q and R.

page_text: It will also be understood that the respective peripheries of the stepped drawing
roller may be inclined in the opposite direction with the same effect as it is
immaterial so long as the taper is in one direction or the other.
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 wire drawing apparatus an eccentric roller or part so arranged and
operated in connection with a coned drawing roller or a stepped coned drawing
roller as to cause the wire to periodically traverse the periphery or peripheries
of the roller laterally, for the purpose and substantially as described.
2.In wire drawing apparatus means for preventing the cutting of the drawing
roller substantially as hereinbefore described and as illustrated in the accom-
panying drawings.
3. In wire drawing apparatus means for effecting the engagement of the
winding drum to the shaft upon which it is mounted consisting of driving arm
or arms engaging with corresponding faces provided upon the winding drum and
maintained in engagement therewith by the tension exercised by the winding of
the wire thereby permitting the disengagement of the drum on the snapping or
breaking of the wire substantially as described.
4. In wire drawing apparatus in combination with means such as specified in
the second claim means for the disengagement of the drawing roller so that the
apparatus may automatically and positively stop upon the snapping or breaking
of the wire substantially as described.
5. A wire drawing apparatus substantially as and having the purposes herein-
before described.
Dated this 10th day of T1000
MARKS & CLERK.
18, Southampton Buildings, London, W.C., Agents.