Improvements in Machinery or Apparatus for Finishing Printed Sheets of Paper.
Year: 1888

page_text: Date of Application, 6th July, 1888
Complete Specification Left, 16th Mar., 1889
Complete Specification Accepted, 4th May, 1889
'PROVISIONAL SPECIFICATION.
Improvements in Machinery or Apparatus for Finishing Printed
Sheets of Paper.
We GEORGE DUNCAN of No. 30 Fairfield Crescent Liverpool in the County of
Lancaster Engineer and JAMES SALMON of Blackfriars Bridge Manchester in the
County of Lancaster, Engineer, do hereby declare the nature of this invention to be
as follows:-
The object is to provide efficient machinery or apparatus for finishing printed
sheets so as to remove the set off or superfluous moist ink therefrom.
Apparatus under our invention consists essentially of a suitable frame carrying
two or more heated smooth metal rolls on parallel axes between and in contact with
which the paper to be treated is passed, in combination with novel means for
removing the set off from such rolls, and in some cases for drying or polishing
such rolls.
Means for removing the set off under our invention consists essentially (a) of an
endless travelling blanket or wiper so disposed that in one portion of its travel it
dips into or comes in contact with petroleum an alkaline solution or other suitable
cleaning liquid, whilst in another portion of its travel the said endless blanket or
wiper is in contact with the roll to be cleaned. (b) of a soft porous roller such as a
shaft covered with discs of felt or with a blanket, such roller being arranged to come
into contact with the rolls to be cleaned and with a cleaning liquid the same or similar
to any of those above setforth.
In combination with the appliances above mentioned dry wipers may be used to
act on the set off roll or rolls.
The finishing rolls may be placed in any convenient position but preferably one
above the other, and when the rolls are one above the other the bottom roll is advan-
tageously caused to dip into a trough containing the cleaning liquid. Intermittent or
continuous motion is given to the wipers whether wet or dry.
Dated this 5th day of July 1888.
.

page_text: Improvements in Machinery or Apparatus for Finishing Printed
Sheets of Paper.
We GEORGE DUNCAN of No. 30 Fairfield Crescent Liverpool in the County of.
Lancaster Engineer and JAMES SALMON of Blackfriars Bridge Manchester in the
County of Lancaster 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 object is to provide efficient machinery or apparatus for finishing printed sheets
50 as to remove set off or superfluous moist ink therefrom.
Hitherto such machinery or apparatus has consisted of heated smooth rolls between
which the paper to be finished has been passed and the ink set off has been removed
from the said rolls by means of dry or wet rubbers. Dry rubbers do not effect the
work in a satisfactory manner and wet rubbers have not yet been adapted to allow
of the rolls being placed in the most advantageous position namely one above other.
Now by our improvements we are enabled to cause wet rubbers to act above the
axis of the rolls instead of only acting below as heretofore and are thereby able to
obtain efficient work whether the axes of the rolls are horizontal side by side, diagonal
or one above the other.
Apparatus under our invention consists essentially of a suitable frame carrying two
or more heated smooth metal rolls on parallel axis between and in contact with
which the paper to be treated is passed. in combination with novel means for
removing the set off from such rolls and in some cases for drying or polishing
such rolls.
Means for removing the set off under our invention consists essentially (a) of an
endless travelling or movable blanket or wiper so disposed: that one portion dips into
or comes in contact with petroleum an alkaline solution or other suitable cleaning
liquid, whilst another portion of the said endless blanket or wiper is in contact with
the roll to be cleaned." (b) of a soft porous roller such as a shaft covered with discs
of felt or with a blanket such rolle or blanket being arranged to come into contact with
the roll to be cleaned, and with a cleaning liquid, the same or similar to any of those
More than one such roller may be used in combination with an
endless blanket if desired, and when used for the top roll the liquid is conducted to
them from above.
above set forth.
In combination with the appliances above mentioned dry wipers may be used to
act on the set off roll or rolls.

page_text: above the other, and when the rolls are one
tageously caused to dip into a trough containing the cleaning liquid. Intermittent or
continuous motion is given to the wipers whether wet or dry or in some cases the
wipers may be stationary.
I
DESCRIPTION OF THE DRAWINGS.
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1
Fig. 1 is a vertical section of apparatus under our invention. a frame, b.smooth.
metal rolls carried in bearings on the frame a in any usual manner. The said rolls
are made hollow so that they may be heated by steam, heated gases, or products of
combustion in any known way. c are the feed and receiving tables for the paper to
be passed through between the rolls. The rolls are geared together and are driven
by any, suitable means. d wedge for adjusting the position of the top roll bearings.
The arrows show the direction of motion. The above parts are of any usual or
suitable construction. e endless blanket carried by rollers f. 9 trough for cleaning
liquid. perforated block between the trough g and the blanket e. i adjustable
wiper of india rubber or like elastic substance. Motion may be and preferably is
given to the blanket e so that fresh surfaces are continually being brought into contact
with the cleaning liquid and with the upper roller b. Such motion is imparted to the
blanket through the carrying rollers f by means of worm ratchet or like gear. The
quantity of cleaning liquid reaching the blanket is regulated by one or more stop
cocks on the trough g whilst the block ensures the equable distribution of the liquid
over the surface of the blanket and acts as a weight to keep the blanket and rolls in
contact. As the upper roll rotates the wiper i removes liquid and dirt from the said
roll and prevents it from being carried down onto the passing paper. jare shafts
carrying soft porous rollers which dip into cleaning liquid in a trough 1. m ratchet
and tappet gear for giving motion to the rollers. n is a screw for adjusting the
position of the trough and rollers. o wiper. Any convenient intermittent or con-
tinuous driving gear for the soft rollers may be used or driving gear may be dispensed
with. When the rollers are stationary they act simply as pads and need not be
circular, triangular then being a suitable form. The lower roll may dip into a trough
of liquid or be in contact with a pad or pads contained in a trough of liquid. Two
or more sets of cleaning appliances may be used for each roll.
Fig. 2 is a sectional view of a modification of apparatus in
carried around rollers into a trough p of cleansing liquid.
said blanket by ratchet or other gear as above mentioned.
Any usual or suitable means for feeding and removing the sheets of paper from the
rolls is used.
which the blanket e is
Motion is given to the
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what
we claim is,
First. In a machine or apparatus for finishing printed sheets of paper the combina-
tion of finishing rolls each furnished with a travelling or a movable endless
blanket when the latter receives cleaning liquid substantially as and for the purpose
setforth.
Second. In a machine or apparatus for finishing printed sheets of paper the com-
bination of a finishing roll with an endless blanket and of a finishing roll with soft
rollers and cleaning liquid substantially as setforth.
Third. In a machine or apparatus for finishing printed sheets of paper the
combination of finishing rolls with soft rollers applied to each roll and receiving a
cleaning liquid substantially as setforth.
Fourth. In a machine or apparatus for finishing printed sheets of paper the
combination of a finishing roll with a blanket or soft rollers and feed appliances for
cleaning liquid above the axes of the rolls substantially as setforth,

page_text: Fifth. In a machine or apparatus for finishing printed sheets of paper the combina-
tion of finishing rolls with blankets and rollers and feed appliances for cleaning
liquid substantially as setforth.
:
Sixth. In a machine or apparatus for finishing printed sheets of paper the
combination of finishing rolls with cleaning and dry polishing appliances substantially
as setforth.
Seventh. Machinery or apparatus for finishing printed sheets of paper substantially
as setforth in fig. 1.
Eighth. Machinery or apparatus for finishing printed sheets of paper substantially
as setforth in fig. 2.