IMPROVEMENTS IN ROLLING MILLS, FOR ROLLING WIRE RODS, AND OTHER SECTIONS OF METALS
Year: 1885

page_text: other Sections of Metals.
I, ISAAC HAYWARD of No 42 Parker Street Warrington, in the county of
Lancaster Wire Roller do hereby declare the nature of this my invention for
IMPROVEMENTS IN ROLLING MILLS, FOR ROLLING WIRE RODS, AND OTHER SECTIONS
OF METALS to be as follows
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This invention relates to such rolling mills wherein it is desirable that one or
more parts of the train of rolls, should travel or revolve faster than another part
of the said train, and is equally applicable to mills consisting, either of single or
double trains.
I am aware that there are several arrangements now in existence to accomplish
this, such as different portions of the train of rolls being driven by separate shafts,
or, by means of belts, but these methods are more or less complicated, expensive,
and troublesome in practical working
In my invention however I dispense with these and by a novel arrangement of
pinions, I am enabled to produce an increase or decrease of speed at any one, or,
number of places along the train of rolls, for instance, supposing I have a pair of
rolls running at a speed of 300 revolutions per minute, and require that the next
pair of rolls should revolve at 450 revolutions, I may drive from the end of the
first named rolls, a pinion say 10 inches in diameter, and, gearing into the said
pinion I place another pinion say 7 inches diameter, this latter pinion would then
travel at the rate of 450 revolutions per minute, and then from this said latter
pinion, I should drive the rolls at the increased speed by means of equal pinions in
the ordinary way, Or, I may by this seven inch pinion drive another pinion of
larger diameter say eight inches, and from this 8 inch pinion drive the roll pinions,
and so vary the speed at will, as for instance, these rolls would run at a speed of
about 342 revolutions per minute.
I wish it to be understood that while I mention here certain sizes of pinions, I do
not confine myself to such sizes, as the different diameters would vary, according
to requirements.
By this arrangement it is evident I can have several speeds in one rolling mill,
without interfering with the main driving gear, so that the preparatory rolls can

page_text: run slower, and the intermediate and finishing rolls, at a varied increased speed,
thus in the early stage of rolling where there is a larger surface of metal to be
operated upon, the speed is slower, while in the successive stages where the surface
to be operated upon becomes diminished, the speed is increased, therefore the strain
upon the machinery by being thus better distributed becomes more smooth and
even, and the working of the metal by being thus regulated improves its quality
and enables me to roll longer rods than heretofore as the temperature of the metal
is maintained at a higher degree throughout to the finish

page_text: The dotted line and arrows shew the course of the wire rod while being rolled
from the billet at the bolting rolls, g, h, 1 & 1, to the finishing rolls d 1
In Figs 1, 2 & 3 I have shewn the pinions whereby the variations of speed is
obtained as being each in one vertical line, but if desired in some instances I may
deviate from this one vertical line, and communicate the motion from one pinion
to another in an horizontal plane, similarly as shewn for instance in end elevation
at Fig 4, the circles g1, h1, 21, 31, k1 & 1, representing the diameters of the
pinions.
Although the trains of rolls a-b & c-d, are shewn in plan as being each in one
longitudinal central line, still in the case of my invention being applied as at Fig 4,
it may be necessary to deviate from such a central line
I wish it to be understood that while I mention here certain sizes of pinions and
rolls, I do not confine myself to such sizes, as the different diameters would vary
according to requirements.
Thus by these or similar arrangements I can have several speeds in one rolling
mill without interfering with the main driving gear so that the preparatory rolls
can run slower, and the intermediate and finishing rolls, at a varied increase of
speed, thus in the early stage of rolling when there is a larger surface and section
of metal, to be operated upon, the speed is slower, while in the successive stages
where the surface to be operated upon becomes diminished the speed is increased
therefore the strain upon the machinery by being thus better distributed, becomes
more smooth and even, and the working of the metal by being thus regulated
improves its quality and enables me also to roll longer rods than heretofore, as
the temperature of the metal 18 maintained at a higher degree throughout to the
finish
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
The obtaining of various speeds in rolling mills, of either single or double trains
of rolls, by means of the use, and suitable arrangement of different sizes of the
pinions by which they are driven, similarly as herein described and illustrated upon
the drawings, or any mere modification of the same
Dated L J... 1000