Improvements in Wire-drawing Apparatus.
Year: 1890

page_text: Date of Application, 1st July, 1890-Accepted, 2nd Aug., 1890
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COMPLETE SPECIFICATION.
Improvements in Wire-drawing Apparatus.
I HERBERT JOHN HADDAN of the firm of Herbert & Co. Patent Agents
18 Buckingham Street Strand W.C. in the County of Middlesex Civil Engineer
do hereby declare the nature of this invention a communication to me from abroad
by Joseph Wilson White of Cleveland, State of Ohio, United States of America
Manufacturer and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
This invention relates to improvements in wire drawing apparatus and it consists in
certain features of construction and in combination of parts hereinafter described
and pointed out in the claims.
In reducing for instance wire of medium size to the very small sizes suitable for
bolting cloth and various other purposes, the wire is drawn through a series of
reducing dies; and the motion of the wire being usually quite rapid the friction
between the wire and dies is likely to generate so much heat that the dies are
frequently injured thereby. More especially where diamond dies are used, these are
liable to be cracked and broken if they become heated to any considerable degree. I
have therefore devised the mechanism illustrated in the accompanying drawings in
which the dies are constantly submerged in suitable lubricant.
Fig. 1 is a plan.
Fig. 2 is an elevation in section on line a Fig. 1.
Fig. 3 is a corresponding elevation in section showing a modification hereinafter
described.
A represents a shallow vat for holding lubricant the vat being constructed usually
of cast iron. B and C are horizontal parallel shafts, the same extending into or over
the line of the vat substantially as shown, these shafts outside the vat being inter-
geared in any suitable manner for instance as shown by means of engaging twin
gears m m.
One shaft is provided with a suitable driving pulley for instance pulley N and the
one shaft is provided with a bevel gear O that engages a bevel gear P the latter being
mounted on the upright shaft on which shaft is also mounted the receiving or
winding drum D.
The transmitting mechanism however may be varied indefinitely according to
circumstances or the judgment of the builder.
F is a reel on which the initial coil of wire is placed preparatory to the drawing
and from which the wire leads to one of the draft drums B¹ C₁ these druns being
mounted on the respective shafts B and C. The lower sections of drums B¹ C
extend well down into the vat, so that when the vat is partially filled with lubricant
the lower sections of these drums are submerged. In Fig. 2 wire d from the reel is
shown leading first around drum B₁ in the direction of the arrows and from thence
leading in the opposite directions around drums C and from thence the wire returns
to drum B¹ and so on the wire eventually leading to the receiving drum D.
E E are dies arranged in series and for holding these dies in place are provided
ribs a a the same projecting upward from the bottom of the vat, these ribs having
transverse slots for the passage of the wires. The dies are held in place against these
ribs by the draft of the wire.
For guiding the wire from drum B₁ onto the drum D, is provided as follows.
L is an upright arm usually secured to the vat this arm having a horizontal head L¹
slotted at L the head also having an upturned head or member L³ next drum D.
This head is provided with a small slide the latter bearing a sheave . The slide
may be adjusted along the head in the direction towards or from drum D to bring the
sheave in line with the wire leading from drum B', a thumb screw 12 being provided
for holding the slide in adjustment. The wire on leaving drum B₁ leads over
Prins 621

page_text: sheave and from thence passes through a slit in member L³ and from thence passes
to drum D. Against member L³ may be placed a die E¹ for the final reduction of
the wire.
I will remark that the relative position of drum D as shown is only for simplifying
the gearing, otherwise this drum might be placed at any desired position. The vat A
is kept supplied with suitable lubricant to cover the dies and hence the dies, drum B¹ C¹
and the wire are kept cool. In case of diamond dies being employed the diamonds are
set in a small disc and it is these discs that engage ribs a the disc and die proper
being known to the trade as die. The only object of rotating the drums B₁ C₁ in
opposite directions and crossing the wire as shown in Fig. 2 is to be able to use two
series of dies both of which are submerged. In case of fewer dies being needed so
that one series will be sufficient drums B₁ (" may be just as well rotated in the same
direction in which case the wire would lead around the drum as shown in Fig. 3. In
such case gears m m could be made smaller so as to make room for an intermediate
gear or the gearing could be arranged in any suitable manner to accomplish the
purpose.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. In wire drawing apparatus the combination with a reel, receiving or winding
drum and opposing horizontal draft drums around which the wiro is continuously
wound, a vat for lubricant, such vat enclosing the lower sections of the draft drums,
reducing dies located inside the vat and below the fluid line thereof in position to
engage the wire from one draft drum to the other substantially as set forth.
2. In a wire drawing apparatus the combination with a vat for containing a
lubricant, horizontal shafts, draft drums secured on said shafts and located within the
vat and reducing dies located within the vat below the fluid line in position to engage
the wire in its passage from one draft drum to the other, of a reel on which the wire
to be reduced is placed, and a winding drum on which the reduced wire is wound
substantially as set forth.
3. In a wire drawing apparatus, the combination with a vat, horizontal shafts,
draft drums mounted on said shafts and two series of dies located within the vat
below the fluid line and between the draft drums, of a reel on which the wire to be
reduced is placed, and a winding drum on which the reduced wire is wound substan-
tially as set forth.
4. In a wire drawing apparatus the combination with horizontal shafts with draft
drums mounted on the shafts and dies located between the draft drums, said dies and
the lower sections of the draft drums being enclosed in a vat adapted to contain
lubricant, of a reel on which the initial coil of wire is placed, and a winding drum on
which the reduced wire is wound, a slide bearing a sheave located between the
winding drum and one of the drum shafts such slide being adjustable towards or
from the draft drum substantially as set forth.
5. Wire drawing apparatus substantially as herein shown and described.
11
Tl 1000
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant.