Improvements in Apparatus for More Perfectly Distributing the Ink over the Surface of Inking Rollers in Printing Machinery.
Year: 1888

page_text: Improvements in Apparatus for More Perfectly Distributing the Ink
over the Surface of Inking Rollers in Printing Machinery.
I GEORGE WELDON of 7 Stevens Terrace, King Street, Didsbury, Printer do hereby
declare the nature of my invention to be as follows:-
The object of this invention is the application to the inking rollers of printing
machines of an additional or riding roller resting in frictional contact with the inking
rollers and to which riding roller a variable lateral motion is also imparted for the
purpose of more perfectly distributing the ink over the surface of such inking rollers.
I obtain this variable lateral motion by mounting a boss upon one extremity of the
spindle of the riding roller-and in which boss a screw groove is formed of varying
pitch the threads or grooves being close together at one end of the boss and opening
out wider at the other end of the boss. It will now be apparent that by having
stationery peg or pin to project into this groove that as the roller revolves it will also
have a lateral or longitudinal motion imparted to it, which is slower whilst the
inking rollers are passing oyer the type than when passing over the inking table.
Dated this 14th day of March 1888.
a
JOHN G. WILSON,
Agent for the Applicant.

page_text: Improvements in Apparatus for More Perfectly Distributing the Ink
over the Surface of Inking Rollers in Printing Machinery.
I, GEORGE WELDON of 7 Steven's Terrace, King Street, Didsbury Printer do
hereby declare the nature of my said 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 the application to the inking rollers of letter press or
litho-graphic printing machines of an additional or riding roller resting in frictional
contact with the inking rollers and to which riding roller a variable lateral or longi-
tudinal motion is also imparted as hereinafter described for the purpose of more
perfectly distributing the ink over the surface of such inking rollers. I obtain the
variable lateral motion by mounting a boss upon one extremity of the spindle of the
riding roller and in which boss a screw groove is formed of varying pitch-the threads
or grooves being close together at one end of the boss nearest to the machine and
opening out wider at the other end of the boss. It will now be apparent that by
having a stationary peg or pin to project into this groove that as the roller revolves it
will also have a lateral or longitudinal motion imparted to it, which is slower whilst
the inking rollers are passing over the type or litho-stone than when passing over the
inking table.
On the accompanying drawing Fig. 1. represents a side view of my improved dis-
tributing roller and its actuating mechanism and Fig. 2. is an end view of the
same.
In both the views a is the improved distributing roller by preference consisting of
a light hollow steel cylinder and which simply rests upon the surface of the ordinary
inking rollers b. Upon the axle c of this roller which passes through the usual slotted
supporting bracket d is a boss e in which a screw groove or thread fis formed of
a varying pitch. The threads or grooves (as illustrated more clearly in Fig. 1.) being
closer together at the end nearest the bracket d than at the other end of the boss.
is the stationary peg or pin affixed as illustrated to the bracket & or secured to any
other convenient part of the printing machine. As so arranged the point of this pegg
projects into the groove or thread f and thus being stationary serves to impart a
variable lateral or longitudinal motion to the distributing roller a in addition to its
revolving motion derived from frictional contact with the inking rollers & the said
longitudinal motion being slower whilst the inking rollers are passing over the type or
litho-stone than when passing over the inking table.
In this manner and by the application of my improved distributing roller as afore-
said I obtain a more perfect distribution of the ink over the surface of the inking
rollers of printing machines than heretofore.
די

page_text: Having thus particularly described and ascertained the nature of this my said'
invention and in what manner the same is to be performed I declare that what I
claim is :-
1st. The employment in printing machinery of a distributing roller mounted and
operating substantially as and for the purposes hereinbefore described.
2nd. The use and application of the boss e containing a variable pitched thread or
groove in combination with the stationary peg g for imparting a variable longitudinal
motion to a distributing roller substantially as and for the purpose herein before
described and illustrated on the accompanying drawing.
Dated this 10th day of Dacombes 1000
JOHN G. WILSON,
Patent Office, 55, Market Street, Manchester,
Agent for the Applicant.