Improvements Connected with the Doctoring Rollers or Appliances of Calico Printing Machines and the like.
Year: 1888

page_text: Improvements Connected with the Doctoring Rollers or Appliances
of Calico Printing Machines and the like.
We JAMES KERR of the Firm of F. Steiner and Company of Church and Sunnyside
in the County of Lancaster Turkey red Dyers and Calico Printers and MILES HANDLEY
Foreman Calico Printer in the employ of the said F. Steiner and Company at their
Print Works Sunnyside aforesaid, do hereby declare the nature of this Invention to be
as follows:-
The object of this Invention is to give a much greater varying motion than at
present to the cleaning doctor upon the printing roller in Calico printing machines
and the like so as to prevent the unequal wearing of the edge of the doctor (and
consequent streaks on the cloth) due to the same portion being brought so often into
contact with the same part of the engraving on the printing roller which is particularly
objectionable when "stripes" are being printed.
Our Invention consists in the provision of means whereby the Doctor has varying
transverse motions given to it which may be effected by mechanism which actuates
the traverse cam in such a way as to give it two motions instead of only one as at
present. The cam instead of being keyed fast upon its shaft or centre is fitted upon a
feather key which will drive the cam round in the ordinary way but will also allow
the cam to have given to it a slow to and fro motion along its shaft or centre this
motion brings the Cam into a new position at each revolution and may go on varying
for a considerable time before getting back to the old position. A convenient
arrangement of mechanism for thus actuating the cam consists of a worm keyed fast
upon the centre of the printing machine bowl which worm works into and drives a
worm wheel having fast to it an eccentric or crank which gives motion to one end of
an eccentric or connecting rod operating a lever connected to the traverse cam so as
to move it to and fro along the feather key. The foregoing arrangement may also be
used for obtaining the variation desired where the Doctor is driven by bevel wheels
and Crank or by mechanical devices other than the cam motion herein before
described.
Dated this 22nd day of June 1888.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London,
Agents.

page_text: of Calico Printing Machines and the like.
We JAMES KERR of the firm of F. Steiner & Co. of Church and Sunnyside in the
County of Lancaster Turkey Red Dyers and Calico Printers and MILES HANDLEY
Foreman Calico Printer in the employ of the said F. Steiner & Co. at their Print
Works Sunnyside aforesaid 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 of this Invention is to give a much greater varying motion than at
present to the cleaning doctor upon the printing rollers in Calico printing machines
and the like so as to prevent the unequal wearing of the edge of the doctor (and
consequent streaks on the cloth) due to the same portion being brought so often into
contact with the same part of the engraving on the printing roller, which is particularly
objectionable when "stripes are being printed.
"
Our Invention consists in the provision of means whereby the doctor has varying
transverse motions given to it which may be effected by mechanism which actuates
the transverse cam in such a way as to give it two motions, instead of only one as at
present. The cam instead of being keyed fast upon its shaft or centre is fitted upon a
feather key which will drive the can round in the ordinary way, but will also allow
the cam to have given to it a slow to and fro motion along its shaft or centre. This
motion brings the cam into a new position at each revolution and may go on varying
for a considerable time before getting back to the old position.
A convenient arrangement of mechanism for thus actuating the cam consists of a
worm keyed fast upon the centre of the printing machine bowl, which worm works
into and drives a worm wheel, having fast to it an eccentric or crank which gives
motion to one end of an eccentric rod or connecting rod, operating a lever connected
to the transverse cam so as to move it to and fro along the feather key. The foregoing
arrangement may also be used for obtaining the variation desired where the doctor
traverse motion consists of bevel wheels and cranks or by mechanical devices other
than the cam motion herein before described.
In order that this Invention may be fully understood and practically carried into
effect, we will proceed to describe the accompanying drawing which shows in part
sectional elevation such parts of a printing machine as are necessary to shew the
application of this invention thereto. A is the main bowl of an ordinary printing
machine and B is the bowl centre or shaft upon which it is fastened, the said centre
or shaft working in bearings one of which is shown at C. D shows part of the
printing machine side or main frame to which is secured the bracket E for carrying
the worm wheel G which gears into and is slowly rotated by the worm H keyed fast
upon the bowl centre or shaft B so that it revolves with it. Upon the boss of the
worm wheel G is formed or fixed an eccentric H¹ which gives motion through the
rod I and lever J to the traverse cam K. F is a bracket fastened to the main

page_text: frame D, and for carrying the centre pin for the lever J. The traverse cam K is
fitted upon the centre or shaft B in such a manner that it is rotated by it but it is free
to move to and fro along the said centre or shaft B. this being effected by securing it by
means of a feather key as shown at L. The arrangement by which the cam K is
caused to give motion to the doctor may be any ordinary or convenient one for
instance it may be as follows:-One end of a lever M has upon it a bowl m which
fits into the cam groove R of the cam K. N is a bracket to carry the lever M. by
means of the centre pin P. To the other end of the said lever M is attached an
adjustable rod Q the end S of which is attached to the doctor in the usual manner
and thus gives it motion. It will be seen that at every revolution of the cam K
it will have taken up a new position upon the centre or shaft B until the worm
wheel E has completed one revolution when it will have returned to its old position.
It will be readily understood that if cranks bevel wheels or devices other than the
cam K be used in place thereof that the said devices can be operated as described
with regard to the cam K.
Having now particularly described and ascertained the nature of this in-
vention and in what manner the same is to be performed we declare that what
we claim is :-
First. In mechanism or appliances for doctoring printing rollers, a worm and
worm wheel with eccentric or their equivalents to give a varying traverse motion to
the aforesaid doctor, substantially as hereinbefore described.
Second. The general arrangement and combination of parts forming mechanism
for giving varying traverse motion to the doctor of printing rollers, substantially
as herein before described and illustrated by the accompanying drawing.