A Machine for Surfacing and Polishing Rolls, particularly the Rolls of Rolling Mills, Worked by an Electric Motor.
Year: 1897

page_text: Date of Application, 29th Dec., 1897-Accepted, 14th May, 1898
A Machine for Surfacing and Polishing Rolls, particularly the Rolls
of Rolling Mills, Worked by an Electric Motor.
We, KARL BREITENBACH and FRITZ BREITENBACH, both of the Firm Gerl.
Breitenbach, Machine Builders, of Sieghütte, Siegen, Germany, 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 invention relates to a machine worked by an electric motor and
intended for surfacing and polishing rolls in position, especially, the rolls of
plate rolling mills.
This machine offers the advantage of doing away with all transmission for the
working of it, and consequently, of avoiding the inconveniences accruing from the
use of this transmission.
In the annexed drawing:
Fig. 1 is a front view in elevation of a smoothing machine with direct working.
Fig. 2 is a side view of the same machine.
Fig. 3 shows a plan view of the machine.
Fig. 4 is a front view in elevation of a machine worked by a gearing.
Fig. 5 is a side view of same.
Fig. 6 is a plan view of the machine represented in Figs. 4 and 5.
The machine shown in Figs. 1, 2 and 3 is composed of an electric motor A
whose shaft a bears the grind-stones C at its extremities. The motor A is fixed
on a transverse axle D of rectangular section and whose two elbowed extremities
are provided with ends 6 turning in the bearings c. The shaft D has a lever E
arranged opposite the motor A, the forked end of which bears the two small pivots e
of a collar fixed in a neck made in the hub of the hand wheel F.
The hand wheel F whose hub is threaded on the inside, screws on the threaded
rod G having its lower end g connected with the platform H of the machine.
This platform is placed on a carriage L fixed on the table I which is also fixed
by means of bolts upon two rails K arranged on the inner sides of the roll standards
and provided with lugs in which the threaded rods i are screwed serving to regu-
late the transverse position of the whole system.
The platform H can pivot on the carriage L and this latter can be displaced
longitudinally on the table I. The longitudinal movement of the carriage is
produced by a hand wheel M wedged upon an axle bearing a conical pinion N
at its other end and turning in a socket t fixed on the platform H of the machine.
The pinion N gears with a conical wheel O fixed upon a vertical shaft which also
bears a spur pinion gearing with a rack P fixed inside the table I.
The rotary movement of the platform H upon the carriage L is obtained by
means of the hand wheels Q fixed upon wormed rods m screwing into the ears
of the platform H; moreover, the bearings c of the latter bear bent plates R fixed
above the grindstones to prevent the sand and particles of metal from getting into
the organs of the machine.
The machine shown in Figs. 4, 5 and 6 differs from the preceding one because
the rotary movement of the armature of the motor is transmitted by means of

page_text: conical gearings instead of being transmitted directly by the shaft of the motor
itself.
In this machine, the shaft D¹ has at its fore-end two lever arms St having bear-
ings at their ends, in which the axle a¹ turns this axle bearing the grindstones C
and the conical wheel T¹ gearing with the conical pinion U₁ fixed to the end of
the shaft of the electric-motor A¹. The shaft D' is also provided at its upper part
with a socket V1 in which the shaft of the armature turns and at its back part-
with a lever arm E¹ opposite the arms S¹ and forming a platform, upon which the
motor A' is fixed. This latter has on its exterior side, three lugs g supporting a
transverse axle 21 forming the articulation with the wormed rod G₁ upon which
the hand wheel F is screwed. The hub of this hand wheel has a neck in which a
collar fis fixed provided with two pivots e¹ whose extremities are fixed to two
levers X connected at r¹ to the platform H₁ of the machine and provided with
slides Yin which the ends of the axle 21 slide..
...
.
The working of these apparatus is very simple and takes place as follows.
The machine being fixed upon the uprights of the rolling mill by means of
bolts, the grindstones C or C¹ are brought into contact with the rolls Z by approach-
ing them at the desired height; for this purpose it suffices to turn the hand
wheels For F¹ in either direction; these wheels, by raising or lowering the lever E
or E either directly as in Fig. 2, or through the medium of the rod G¹ as in
Fig. 4 produce an inverse movement of the grindstones C C₁ and allow the latter to
be brought to the desired height; then the grindstones are drawn to the rolls by
screwing the threaded rods i into the lugs h, and the apparatus is then in working
order. To start the machine, it suffices to pass the electric current into the arma-
ture of the motor and this communicates its rotary movement to the grindstones C
or Ceither directly by its axle a, Figs. 1, 2 and 3, or through the medium of
conical gearings Ui Ti respectively fixed upon the axle of the grindstones and
upon that of the armature, Figs. 3, 4 and 5.
The longitudinal displacement of the machine according as the operation pro-
ceeds is produced by means of the hand wheel M which through the medium of
the conical wheel N and O communicate a rotary movement to the spur-pinion
gearing with the rack P, and as this latter is stationary, it is the pinion which
moves and draws the whole machine with it.
In case only one of the grindstones is required to work, the rod m corresponding
with the other grindstone is unscrewed by means of its hand-wheel Q whilst on
the contrary the rod corresponding with the working grindstone is screwed and
by acting upon the platform H or H¹ produces the rotation of the latter around
the vertical axle of the conical wheel 0.
Owing to this rotation one of the grindstones is put in contact with the rolls Z
whilst on the contrary the other removes further from it.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed we declare that what
we claim is:-
1) A machine for surfacing and polishing rolls, distinguished by an electric
motor upon whose axle the grindstones or smoothing stones are fixed, the said
motor being fixed on a rotary transverse axle provided, opposite the motor, with a
forked lever moved by a regulating hand wheel screwing upon a wormed rod con-
nected with the platform of the machine; the said platform pivoting on a carriage
by means of two wormed rods provided with a hand-wheel and screwing into lugs
in the platform; the said carriage being worked longitudinally by means of a hand
wheel upon the axle of which a conical pinion is fixed working a conical wheel
wedged upon a vertical shaft having a spur-pinion at its lower end gearing with
a stationary rack fixed in a table which moves transversally upon rails and worked
by wormed rods screwing into the lugs of the rails; the said rails being fixed by
means of screws or bolts upon the uprights of the rolls to be surfaced.
2) A surfacing and polishing machine as claimed in 1) and distinguished by the

page_text: axle of the grindstones being worked by a conical wheel worked by a conical
pinion fixed upon the axle of the motor, the said motor being raised or lowered
by means of a wormed rod connected with its upper part and passing through a
hand wheel with hub threaded inside, the said hub turning in a collar provided
with pivots moving on the upper part of two levers connected with the platform of
the machine and provided with slides in which the extremities of the articulation
axle of the threaded rod turn.
3) A machine for surfacing and polishing rolls, worked by an electric motor,
substantially as described and shown.
Dated this 27th day of December 1897
L. DUVINAGE,
Patent Agent, 8, Rue des Princes, Brussels, Belgium.