AN IMPROVED SAFETY APPARATUS FOR ROLLING-MILLS
Year: 1882

page_text: LETTERS PATENT to Thomas Neuray, Mechanical Engineer, of the City of
Liège, in the Kingdom of Belgium for an Invention of AN IMPROVED
PROVISIONAL SPECIFICATION left by the said Thomas Neuray at the Office
of the Commissioners of Patents on the 17th August 1882.
THOMAS NEURAY, Mechanical Engineer of the City of Liège in the Kingdom of
Belgium "AN IMPROVED SAFETY APPARATUS FOR ROLLING-MILLS"
The object of this invention is to prevent the breakages which so often occur in
Rolling Mills; by deadening or annulling the shocks which are produced by the
passage of a hard body such as tongs or other tools between the rolls, by too great
a pressure produced by miscalculation, or from any other cause.
The apparatus consists of the following arrangements. Two pieces of cast iron
are interposed between the point of the pressure screw and the top brass or step in
which the neck of the upper roll turns. They are pressed together horizontally by
spiral springs the pressure of which can be regulated by adjusting nuts screwed on
to bolts or studs which pass through the said cast iron pieces and through the said
spiral springs. The lower end of the pressure screw is turned conical and enters a
conical recess formed in the upper side of the aforesaid cast iron pieces, one half
the said recess being formed in one of the pieces and the other half in the other
piece the point of the pressure screw thus coincides with the line of separation
between the two cast iron pieces.
These cast iron pieces with their springs are placed in the housings of the mill
one set over each neck or journal and by preference in such position that the lines
of separation between the cast iron pieces are in the same vertical plane and
parallel to the necks or journals of the rolls and the springs transversely thereto.
It will now be understood that when a hard body is introduced between the
rolls, instead of a shock being produced which would ordinarily break some part
of the train or engine this shock is deadened or nullified by the yielding of the
springs which permits of the upward movement of the top roll and the above
Price 71

page_text: described safety apparatuses carried by its upper brasses or steps. In this upward
movement the cast iron safety pieces are separated horizontally by the points of
the pressure screws passing between them, and the springs are thereby compressed,
the hard body is thus free to pass between the rolls and a breakage is avoided.
The same effects are produced if the pressure screws are screwed down too tightly,
the amount of resistance being regulated by the tightening or slackening of the
springs.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Neuray in the Great Seal Patent Office on the
17th February 1883.
THOMAS NEURAY Mechanical Engineer of the City of Liège, in the Kingdom of
Belgium "AN IMPROVED SAFETY APPARATUS FOR ROLLING-MILLS
"
The object of this invention is to prevent the breakages which so often occur in
rolling mills by the passage of too thick a piece of metal or of a hard body such as
tongs or other tools between the rolls or by too great a pressure on such rolls
arising from any other cause.
The improved safety apparatus consists of the arrangement shown in the accom-
panying drawings in which Figure 1 represents an end elevation of the apparatus
Figure 2 a plan, Figures 3, 4 and 5 detached views of certain of the parts and
Figure 6 an elevation of the housing of a rolling mill with the safety apparatus
applied thereto. Similar letters relate to like parts in all the figures.
Two pieces of cast iron A A¹ are interposed between the point of the pressure
screw Cand the top brass or step D in which the neck of the upper roll turns.
They are pressed together horizontally by spiral springs E, E, the pressure of which
can be regulated by adjusting nuts FF screwed on to bolts or studs G G, which
pass through holes G¹ G₁ in the said cast iron pieces A. A' and through the said
spiral springs E E, washers E' E' being by preference interposed between the nuts
FF and the springs E E. The lower end of the pressure screw C is turned conical
and enters a conical recess H formed in the upper side of the aforesaid cast iron
pieces A A¹ (see Figures 3, 4 and 5) one half the said recess being formed in one
of the pieces and the other half in the other piece; the point of the pressure screw
thus coincides with the line of separation between the two cast Iron pieces; each
cast iron piece is also hollowed out at II to correspond to the cylindrical part of
the lower end of the pressure screw. These cast iron pieces with their springs are
placed in the housings of the mill, one set over each upper neck or journal, and by
preference in such position that the lines of separation between the cast iron pieces
are in the same vertical plane and parallel to the necks or journals of the rolls and
the springs E E transversely thereto.
It will now be understood that when a hard or too thick body is introduced
between the rolls, instead of a shock being produced which would ordinarily break
some part of the train or engine, this shock is deadened or nullified by the yielding

page_text: of the springs, which permits of the upward movement of the top roll and of the
above described safety apparatuses carried by its upper brasses or steps. In this
upward movement the cast iron safety pieces A A₁ are separated horizontally in
the direction of the arrows in Figure 2 by the points of the pressure screws passing
between them and the springs E E are thereby compressed, the hard or too thick
body is thus free to pass between the rolls and a breakage is avoided. The same
effects are produced if the pressure screws are screwed down too tightly the amount
of resistance being regulated by the tightening or slackening of the springs E. E.
Having now described the nature of the said invention and the manner in which
the same is to be carried into effect I would have it understood that what I
claim is :-
The improved safety apparatus composed of the pieces A A', the springs E E the
bolts G G and the adjusting nuts FF combined, applied, constructed, and operating
as herein before described and illustrated in the drawings hereto annexed and for
the purpose specified.
In witness whereof I the said Thomas Neuray have hereunto set my hand
and seal, this sixteenth day of February in the year of our Lord one
thousand eight hundred and eighty three.