AN IMPROVED METHOD OF TRUEING THE SURFACES OF THE CYLINDERS OF CALENDERING AND FINISHING MACHINES
Year: 1881

page_text: LETTERS PATENT to Charles Alfred Barlow, of the Firm of H. B. Barlow, of
Manchester, in the County of Lancaster, Patent Agent, for an Invention of
"AN IMPROVED METHOD OF TRUEING THE SURFACES OF THE CYLINDERS OF
CALENDERING AND FINISHING MACHINES." A communication from abroad
by José Tolra, of Barcelona, Spain.
PROVISIONAL SPECIFICATION left by the said Charles Alfred Barlow at
the Office of the Commissioners of Patents on the 28th December 1881.
CHARLES ALFRED BARLOWw of the Firm of H. B. Barlow of Manchester in the
County of Lancaster Patent Agent. "AN IMPROVED METHOD OF TRUEING THE
SURFACES OF THE CYLINDERS OF CALENDERING AND FINISHING MACHINES."
A communication from abroad by José Tolra of Barcelona, Spain.
The object of this Invention is to true the surfaces of the paper or cotton bowls
or cylinders of calenders efficiently and economically and with or without removing
them from the machine. To effect this an emery roller is mounted on a hollow
shaft parallel to the axis of the bowl fitted in suitable bearings connected to the
frame of the calender, inside this hollow shaft is a shaft in which right and left
hand helical grooves are cut, joined at each end so as to traverse the grinding
roller continuously to and fro about the length of the bowl to be trued; a
longitudinal slot is made through the hollow shaft and through this slot a pin
connected to the emery roller passes and enters the groove in the inner shaft, the
hollow shaft is driven at a suitable speed and the grooved shaft is driven at a
different speed to traverse the emery roller from one end of the bowl to the other.
Adjusting screws are provided to act on the bearings and cause the emery roller to
approach or recede from the bowl being operated upon.
The abraiding roller may be made of substance other than emery and it may be
caused to revolve and traverse in any other convenient manner.
By the use of this Invention, cotton or paper calender bowls or cylinders may
be made true rapidly and efficiently with or without taking them from the
machine.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Alfred Barlow in the Great Seal Patent Office on the
24th June 1882.
CHARLES ALFRED BARLOW of the Firm of H. B. Barlow, of Manchester in the
County of Lancaster, Patent Agent. "AN IMPROVED METHOD OF TRUEING THE
SURFACES OF THE CYLINDERS OF CALENDERING AND FINISHING MACHINES."
A communication from abroad by José Tolra, of Barcelona, Spain. '
The object of this Invention is to true the surfaces of the paper or cotton bowls
or cylinders of calenders efficiently and economically and with or without removing
them from the machine. To effect this an emery roller is mounted on a hollow
shaft parallel to the axis of the bowl fitted in suitable bearings connected to the
frame of the calender, inside this hollow shaft is a shaft in which right and left
hand helical grooves are cut, joined at each end so as to traverse the grinding roller
continuously to and fro about the length of the bowl to be trued: a longitudinal
slot is made through the hollow shaft and through this slot a pin connected to the
emery roller passes and enters the groove in the inner shaft, the hollow shaft is
driven at a suitable speed and the grooved shaft is driven at a different speed to
traverse the emery roller from one end of the bowl to the other.-Adjusting screws
are provided_to_act-on-the-bearings and cause the emery roller to approach or
Tecede from the bowl being operated upon.
The abraiding roller may be made of substance other than emery and it may be
caused to revolve and traverse as hereinafter described or in any other convenient
manner.
By the use of this Invention cotton or paper calendar bowls or cylinders may
be made true rapidly and efficiently with or without taking them from the
machine.
And in order that this Invention may be fully understood and readily carried
into effect I will describe the accompanying Sheet of Drawings reference being
had to the figures and letters marked thereon.
Fig. 1 is a front elevation of part of a calendering machine to which the
Invention is applied. Fig. 2 is a sectional elevation and Fig. 3 is a plan of the
same.
A is part of the frame of the machine. B is the cylinder to be trued. C is the
emery roller on the shaft C'. mounted in bearings in the blocks D D which slide
on the two brackets E E bolted to the frame A-each of these brackets has a
projecting planed surface on which the blocks D D are traversed by the screws F F
to move the grinding roller nearer to or further from the bowl or cylinder B. On
one end of the shaft C'. are fast and loose pulleys G G. driven by a belt from any
convenient shaft and on the other end is a worm H that gears into a worm wheel I
which turns on a bearing on the bracket K-this bracket has two lugs one on each
side of the worm H-the shaft C'. passes through holes in these lugs. On the
worm wheel I is a crank pin which is connected by a link to a stud fixed to a
bracket E and as the worm fixed on the shaft C. causes the worm wheel to turn
the crank pin in revolving round the centre of the worm wheel causes the bracket K
the shaft C. and roller C to move to and fro longitudinally. The cylinder B and
the roller C are driven in opposite directions as indicated by the arrows on Fig. 2.
Instead of an abraiding roller as long as the cylinder to be trued, a narrow emery
wheel may be used and it may be caused to traverse from one end to the other of
the cylinder by means of right and left hand helical grooves cut in a shaft as is
well understood or in any other convenient manner.

page_text: The emery or other abraiding roller may be mounted on a separate frame and
not attached to the calendering machine and the cylinder may be taken from the
machine and placed in suitable bearings in the frame of the grinding apparatus in
which case duplicate cylinders may be kept so that one may be always ready to
put in the machine when the other is worn.
Having stated the nature of this Invention and described the manner of
performing the same.
I declare that I claim.
The improved method of trueing the surfaces of the paper or cotton cylinders of
calendering and finishing machines by a grinding wheel or roller with or without
removing the cylinders from the calendering or finishing machine as herein
described and as shown.
In witness whereof I the said Charles Alfred Barlow have hereunto set my
hand and seal this Twenty third day of June One thousand eight hundred
and eighty two.
CHARLES ALFRED BARLOW. (L.S.)