Year: 1888

page_text: ROBERT CUMMING ANNAND of South Shields in the County of Durham, England,
do hereby declare the nature of this invention to be as follows:-
This invention has for its object improvements in the means whereby the ink ducts
of printing machines can be altered so as to give a larger or smaller supply of ink to
the machines without the setting screws at the back of the ducts requiring to be
altered.
The invention can be applied to new or existing machines.
The arrangement consists in boring out the bearings which carry the ends of the
duct roller so as to admit of the introduction of a round movable bush at each end in
which the duct roller turns. The hole in the bush is eccentric to the outside of the
bush that is to say the bush has a thicker and thinner side. Forming part of the
bush but outside the bearing is a circular disc, in the outer rim of which there are
Into this toothed wheel
teeth occupying the whole or part only of its circumference.
or segment there is geared a worm which has a handle or other suitable means at one
end by which it can be turned round by hand. Instead of operating the bush by a
worm and wheel the toothed segment may terminate in a handle at one part of its
circumference. A suitable pawl is pressed against the teeth by a spring which
prevents the bush from turning either way until the pawl is lifted. To give the
machine more ink it is only necessary to move round this bush until its thicker side
comes next the duct. By this means the duct roller is thrown further away from the
ink blade or knife forming part of the duct and more ink is thus allowed to pass. The
turning round of the thinner side of the bush in the direction of the ink duct reduces
the supply of ink to the desired quantity.

page_text: Improvements in the Inking Apparatus of Printing Machines.
I, ROBERT CUMMING ANNAND of South Shields in the County of Durham, Printer
and Publisher 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:-
--
This invention has for its object improved means whereby the ink ducts of printing
machines can be readily altered or adjusted so as to give a larger or sinaller supply of
ink to the machine as required without the setting screws at the back of the ducts
requiring to be altered.
The invention, which can be applied to both new and existing machines, consists in
mounting the ends or journals of the duct roller excentrically in round, movable
bushes, which are fitted in the bearings or brackets that support the ends of the
roller; that is to say, each bush has, with respect to the corresponding end or journal
of the roller a thicker and a thinner side.
These bushes are fitted with means whereby they can be readily turned as required
so as to bring either the thicker or the thinner side, or any intermediate part next the
duct, and thus move the duct roller further from or nearer to the ink blade or knife
which forms part of the duct; consequently more ink or less ink, as the case may be
is allowed to pass. The bringing of the thicker side of the bush next the duct gives
the largest supply of ink, and the thinner side the smallest supply.
I can employ various ways or means for moving the bushes. According to one way
I form in a piece with, or fix to the bush a toothed wheel or segment, with which
gears a worm, fitted with a handle, so that by turning the handle the worm imparts
rotary movement to the wheel and bush. This arrangement will be understood on
reference to Figure 1 of the annexed drawings, in which b represents the end or
journal of the duct roller, c the movable bush in which the roller is mounted
excentrically, d the bearing or bracket bored or formed to receive the bush, e the
toothed wheel fixed to or formed in a piece with the bush c, ƒ the worm gearing with
the wheel e, and g the handle for working the worm.
According to another way which will be understood on reference to Figure 2, I fit
a handle g directly to the toothed wheel or segment e, and I employ a spring pawl or
catch engaging with the teeth of e to hold the bush c in the position to which it has
been adjusted; this pawl is temporarily freed from the teeth when it is desired to move
the bush. The two extreme positions of the handle are shown in dotted lines, while
the full lines show it in an intermediate position. a represents duct roller and i the
ink blade or knife.
Other ways of moving the bushes and retaining them in the desired position will
readily suggest themselves.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. Mounting the duct roller of the inking apparatus of printing machines
excentrically in bushes which can be moved round so as to alter the position of the
duct roller relatively to the duct, and thereby regulate the supply of ink to the
machine as herein before described.
2. Constructing the inking apparatus of printing machines as hereinbefore described
and represented in the annexed drawings.
J. C. MEWBURN,
169, Fleet Street, London,
Patent Agent.