Year: 1894

page_text: Date of Application (in United Kingdom), 12th May. 1894
Complete Specification Left, 12th May, 1894-Accepted, 14th July, 1894
I, LOUIS FERDINAND DOBLER of 81 Boulevard Beaumarchais, Paris in the
Republic of France, 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:-
The present application for a Patent of invention has for its object to secure to
me the absolute and exclusive property of a new continuous wire-drawing machine
such as hereinafter described.
Figure 1 of the accompanying drawings is an elevation, and
Figure 2 a plan of a single machine, and
Figure 3 a plan of a double machine of the new type.
Figure 4 is a geometrical diagram explanatory of the system.
Inasmuch as the particular form of the various parts of the machine is of no
importance in regard to this Patent and as I desire to patent nothing but the
arrangement of the machine as a whole and the relative position of its parts, the
one to the other, the drawings are reduced to mere diagrams with a view to making
them more clear.
Examining in the first place Figures 1 and 2 it will be seen that the machine is
driven by the fast and loose pulleys P and Pi mounted on the main-shaft E F of
the machine. H indicates the reel on which the wire is wound which is to be
drawn; e', e, e.... are successive draw-plates, indefinite in number, and of which
the holes successively diminish from e¹ to e; Z, Z³, Z³ … … … … . are traction-pulleys
placed successively after each corresponding draw-plate and driven by the
pulleys,
themselves actuated by endless belts or cords from the
pulleys R1, R2 R³
respectively, fixed on the driving shaft E F. The speeds
of the traction-pulleys Z¹, Z³ Z³.... increase successively from Z' to Zal, in
such manner that they are equal or greater than the speeds of the wire passing over
them.
'
....
The wire which is to be drawn unwinds itself from the reel H, passes through
the first drawplate e', is wound once or several times round the traction pulley Z',
thence passing in like manner through and round Z³, etc., and so on until it
arrives at the last of the series of draw-plates e". On issuing from this last the
wire is received on a winding bobbin S which may be vertical or horizontal. As
shown in the drawings S is horizontal. For the purpose of distributing the con-
volutions or coils of the wire evenly over the entire width of the bobbin S the
last draw-plate (e) has a reciprocating movement, to and fro, communicated
to it by a cam or any other suitable mechanism. If, instead of winding the
drawn wire on a bobbin, it is desired to receive it in the form of hanks, the
bobbin S is replaced by a driving cone, and in this case the last draw-plate is
stationary.

page_text: In order to be enabled to regulate the tension of the endless driving belts which
actuate the pulleys 1, 2, 3 suitable tension pulleys such as P₁, P³ P³...,
may be provided.
The spindles a¹, a³, a³. al, of the traction-pulleys Z', Z³, Z³ Za are
parallel to one another and also to the driving shaft E F, and their common
direction forms horizontally an acute angle a with the central longitudinal axis of
the machine itself, X Y and such that the centres of the pulleys 2
located in the respective planes of the pulleys R R R³... by which they are
driven, all fall in one and the same plane X'Y' parallel to the said londitudinal
axis XY of the machine, the axis a of the winding bobbin S forms with X Y an
angle which may be equal to a, but which is preferably made equal to 90°, for
reasons of construction having reference to the to and fro movement of the last
draw-plate e".
The diagram Figure 4 shows clearly how the angle a is to be determined. Supposing
that the distance d between the axes a', a², a³.., is equal to 200 millimetres and
that the distance D between the central planes of the pulleys R', R2, R³... is
equal to 20 millimetres; in that case the angle a is determiued by the formula:
cot. a = 0.1. Then the longitudinal axes of the driving-belts connecting
respectively R' and ', R2 and 2, R³ and 3, intersect the axes a', a³, a³
in the points c¹, c³, which are all situated in one and the same plane X¹ Y¹,
parallel to the longitudinal axis X Y of the machine.
The advantage of this arrangement is that it reduces the width of the machine
as well as the length of the driving shaft and the axes a', a², a³,... All the
rotating parts being consequently reduced in weight, the speed of the machine may
be carried to its maximum, and the driving power, the wear, and the cost of the
machine are brought down to a minimum.
It should be added that, theoretically, the angle a is determined in the manner
hereinbefore explained that is to say it is constant for the driving-shaft and the axes
of the traction-pulleys in practice however the theoretic line may be slightly
deviated from a deviation to which the driving-belts are readily adapted by reason
of their flexibility.
This flexibility of the belts would admit of the choice of another angle a for the
driving axle E F slightly differing from a. It must therefore be understood that I
expressly reserve to myself the case in which the centres cl, c³, c... of the
pulleys, ... are located, not rigorously in a plane parallel to X Y but in
positions approximating to the theoretical positions; as well as also the case in
which the driving shaft E F is not arranged in complete parallelism with the axes
of the traction pulleys Z1, Z2, Z³.
The particular relative positions of the axes, as above described, also admits
easily of the installation, upon one and the same frame of two sets of drawplates
with their attendant traction-pulleys each set being entirely independent of the
other. The drawing Figure 3 illustrates by way of example in plan a particularly
simple and advantageous arrangement of such a double wire drawing machine.
The same parts are indicated by the same letters as in Figure 2; the arrows
indicate the directions in which the wires travel.
1
.
The pulley P (fast) and P¹ (loose) serve to drive the series located in front of
the central line A. B. The second series located behind the said line A B is driven
in the following manner. P1 and P are two loose pullies mounted on the driving
shaft, which also carries P and P₁ by which the first series is driven. When the
driving-belt passes on P₁₁ the second series is thrown out of motion; when it
passes on Pit communicates motion to the pulley Q' mounted loosely adjacent
to P¹ on the shaft E F. A second shaft G K parallel to EF carries a fast
pulley and the pulleys R', R, R',... being driven by a belt from Q¹
to q and driving in its turn the second series of traction pulleys in connection
with the second set of drawplates by means of the intermediate belt pulleys R¹, r'ı,
R, R....
The movement of the wire in the second series being in the opposite direction

page_text: to that of the first series it will be necessary to cross either the belt which
drives P or the belt connecting Q and q¹ or, lastly the driving belts R₁₁₁,
R', R¹
The simplest plan is to cross the driving belt Q¹ q'.
Having now particularly described and ascertained the nature of the said inven--
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1. In continuous wire drawing machines the arrangement of the driving shafts.
and of the axes of the traction-pulleys essentially characterised by the parallelism
of all these shafts and axes the one with the other, and their obliquity in relation
to the longitudinal axis of the machine itself, it being expressly understood that.
such theoretic parallelism may not be rigorously maintained in practice, by reason
of the flexibility of the endless belts or cords which drive the traction-pulleys but.
without injuriously affecting the working of the machine.
2. In continuous wire-drawing machines, the arrangement of the machine as.
hereinbefore described essentially characterised by:
1
(a) The installation upon one and the same frame of a double series of draw-
plates with traction-pulleys each series being adapted to work separately
and independently the one of the other.
(b) The method of driving the two independent series of drawplates with their
traction-pulleys by means of a single driving shaft carrying on the one hand
a fast and a loose pulley to drive the one series and on the other hand two
loose pulleys to drive the other series.
3. The general arrangement of the continuous wire-drawing machine as herein-
before described essentially characterised by the combination of the mechanical
arrangements as described and claimed in paragraph 1 and 2a and 2 b.
W. P. THOMPSON & BOULT,
Agents for the Applicant.
W. P. THOMPSON & BOULT,
Agents for the Applicant.