Improvements in Wire Draw Benches.
Year: 1896

page_text: Date of Application, 29th Apr., 1896-Accepted, 10th Apr., 1897
Improvements in Wire Draw Benches.
I CARL BREMICKER of Haspe in the German Empire, 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:-
This invention has for its object a new and useful apparatus for continuous wire
drawing in a loose state by the method or process hereinafter described and
delivering the wire in the size required wound up on drums ready for use.
In the accompanying drawing:
Figure 1 is a front elevation of the draw bench;
Figure 2 is a plan of the same;
Figure 3 a side view seen from left side of Figure 1 ;
Figure 4 a section through the framing plate;
Figure 5 are details of construction.
Upon the legs c being connected by iron bars b and angle irons a is fixed the
table d having a gutter e for the purpose of being filled with a liquid.
Said table is provided with a number of brackets a 1 in which are located
vertically rotating spindles f which with their bottom ends are guided in suitable
brackets. These brackets form part of a transverse bart which is attached to the
angle irons a of the framing; to hold said spindles in the vertical position or
prevent them from falling down they are fitted with rings a 2 which rest on the
brackets of the frame portion t. The spindles fare provided at their top ends
with drawing rollers 9 which are all of equal diameter except the first one which
carries the drawing drum i.
I shall now describe how the spindles are made to turn.
For this purpose a shaft his horizontally located in the framing by suitable
brackets to which are keyed corresponding to the number of spindles bevil
wheels k, k 1, k2.. which gear with other bevil wheels 8, s 1, s 2... which are fixed
to the bottom parts of the spindles f underneath the transverse bar t. The
diameters of these wheels are equal in size whilst those on shaft are unequal in
such a manner that they are proportionally enlarged in order to give the drawing
rollers different speeds according to the elongation of the wire which is to be
reduced.
It may be mentioned here that instead of bevel wheels there may be also
arranged friction gearing.
Naw the table is divided in two chambers the first one serving only to carry the
drawing rollers whilst the other one forms a chamber only arranged for the draw
plates and waste and dirt produced by the process of drawing.
Besides said chambers 1 arrange a third one which is formed by a receptacle
that is fixed to the tabled on the framing. This receptacle serves to be filled with
acid to continuously clean the wire after the first annealing and cleaning process
and free it from the film of oxyd which covers the wire after it is drawn through
each plate.
For said purpose the surface of the receptacle III is made oblique to gather
the acid preferably at the back and to prevent the same from flowing into the
table. Vertically to the surface of III there are arranged on it leading rollers q
on nillars » Figs. 2. 3 and 4.

page_text: However as the wire must pass through the wall c 1 between the chambers 1 and 11
it is necessary to cut openings in the same and as it is now possible that during the
drawing process acid may be carried to the liquid in the table or mice versa through
the said openings I have made provision to tighten the two first receptacles against
each other. The manner in which this is done will be best understood from
Figure 5.
I attach to the wall c 1 before the said openings a box n of cast iron or other
suitable metal and put between the wall and the box some packing material to
prevent the acid to escape into the receptacle I. This box is slotted in the vertical
direction so that it is enabled to take up india rubber pieces which are pressed by
means of screws w against the wire that runs through holes drilled in the box n
and serve also for tithtening the chambers I and II. Against said box lays the
drawing plater which is held at the box simply by traction produced by the
wire. By this construction a special arrangement to hold the drawing plate is
unnecessary.
The working of my new draw bench is as follows;
After the annealing and cleaning process the wire is taken to the swift or reel
(not shown in the drawing). From the reel it is carried through the bath of acid
in the receptacle III to the first leading roller g by which it is lead back to the
first drawing plate r. After passing the same the wire enters the receptacle I or
table, will be wound once or twice round the drawing roller and is then lead again
into the acid and so on.
It is of importance to mention that the wire in leaving the box n runs in a loose
state to the conducting rollers and that the direction in which the wire is drawn
through the acid is oblique according to the surface of the receptacle III.
The holes in the drawing plates are made gradually decreasing in size so that the
wire passes through the last plate in the right thickness after which it is wound up
on the drawing drum i ready for sale.
As stated above the table receptacle is filled with a drawing liquid of known
character and must point out that this liquid prevents wear and tear of the
drawing rollers the drawing surfaces of which are wholly submerged. The wire
is forced to slide on the rollers on account of the greasy matter contained in the
liquid and can therefore not damage the same.
By this means the wire which on account of its loose state cannot break, is made
smooth by the rubber portions and cooled at the same time. Any oxide which
results from drawing is taken away by the acid which as described above is
separated from the drawing liquid. Waste and dust cannot enter the liquid
because they are collected in the special drawing receptacle II from which they are
removed by holes in some convenient manner.
The receptacles II and III are also tightened against each other.
The machine is constructed in such a way that it is possible to combine a number
of them and to drive them by one shaft; each apparatus may be set in and out of
motion independent of its neighbouring apparatus.
This construction has the great advantage that one workman may attend to a
great number of machines.
Having thus fully described the nature of my said invention and in what
manner the same is to be performed, 1 declare that what I claim is :
1. The improvements in or relating to machinery to be employed in wire
drawing (that is to say) constructing and employing the table receptacle I with
vertically arranged spindles driven by bevil or friction gear and carrying the
drawing rollers all of the same size.
2. Constructing and employing the receptacle II forming part of receptacle I
and being tightened against it by a box n filled with india rubber portions.
3. Constructing and employing the receptacle III connected to the receptacle II
and fitted with conducting rollers and filled with acid.
4. The general construction combination and arrangements of parts substantially

page_text: as and for the purpose as herein before described in foregoing specification ani
illustrated on the accompanying sheet of drawing.
Dated 28th April 1896
CARL BREMICKER,
By A. Daumas,
Agent for Applicant.