Improved Rider Roller for Printing Machines.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improved Rider Roller for Printing Machines.
WILLIAM HENRY CLEGG,. Mechanic, 135, Brunshaw Road, Burnley, JOIN
JOWETT, 5, Adelphi Street, Burnley, Printer. We do hereby declare the nature
of this invention to be as follows:-
This invention relates to the construction of rider rollers used in reciprocating
type bed printing machines, so as to cause the rider to move to & fro across the
machine, through being in contact with the inking roller beneath, at the saane
time that it revolves. The central part of the rider, which part is in contact with
the inking roller, is hollow, & is bushed at both ends, & on the face of each bush
is a projection, one bush is also provided with an internal thread & through this
central part of the rider & projecting at each end is a shaft, on one portion of
which is formed a thread or screw, which fits or screws into the thread in the bush.
Also fixed on this shaft, one at each end of the central part but some distance
from it equal to the longitudinal travel of the central part, are two collars each
having a projecting lug on one face, that nearest the central part
At one end
of the shaft & held to it by friction is a loose collar which has two flat sides,
which fits the slot in the frame on one side of the machine & the plain part of
the shaft fits the slot in the other side.
The rider being placed in the slots on the machine above & in contact with
the inking roller beneath, the action is then as follows. The inking roller,
through contact with the reciprocating type bed of the machine, is revolved first
in one direction & then in the other & the central part of the rider being in con-
tact with it, is also revolved first one way & then the other.
The shaft being kept from revolving by the two flats on the loose collar held
by friction the central part of the rider screws itself backwards & forwards on the
shaft, across the machine. Should the movement vary, that is the rider revolve
more in one direction than the other, the projections on the face of the central
part of the rider come in contact with the projections on the collars according
to the side which it moves to & causes the shaft & central part to all turn round
together, the friction on the collar which fits the slot in frame of machine being
sufficient to prevent the shaft turning when the projections are not in contact.
This also allows the rider to be put on the machine at any part of the travel of
the reciprocating type bed & if it is not in time with the movement of the bed,
rights itself on the return movement of the bed.
10th day of February 1898.

page_text: We, WILLIAM HENRY CLEGG, of 135, Brunshaw Road, Burnley, in the County
of Lancaster, Mechanic, and JoHN JOWETT, of 5, Adelphi Street, Burnley, afore-
said, Printer, 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 relates to improvements in the construction of rider rollers
used in reciprocating type bed printing and lithographic machines. According
to our present invention, the rider roller is caused to move endwise to and fro,
across the machine, and at the same time revolve by frictional contact with the
inking roller beneath, whereby the ink is evenly distributed on the surface of
such roller, and consequently on the type.
We provide a hollow roller to serve as the rider roller, which is bushed at both
ends, and is loosely mounted on a shaft on one portion of which is formed a
screw thread, which fits or screws into one of the bushes of the roller, tapped to
receive the same. The loosely mounted roller is limited in its end to end move-
ment by two collars fixed to the shaft, one on each side of the roller, so that the
screw thread is always in gear with the tapped hole in the bush of the loosely
mounted roller. At each end of the loosely mounted roller is formed a lug or
projection, and a corresponding lug or projection is also formed on each of the
collars fixed to the shaft.
On the shaft of the roller at one end is fitted a loose collar or friction piece
having two flat sides, which is held in frictional contact with a fixed collar on
the shaft by a spiral spring. The shaft is introduced into the usual slots in the
machine for the reception of the inking roller, the slot at one end receiving the
locse collar or friction piece. The rider roller is thus in contact with the inking
roller beneath, and the motion of the latter, communicated to it by contact with
the reciprocating type bed, is transmitted to the loosely mounted rider roller,
first in one direction and then the other.
The shaft of the roller is kept stationary by the loose collar or friction piece
fitted in the slot of the machine, but should the movement vary, that is, the roller
revolve more in one direction than the other, and by so doing move nearer one
side of the machine than the other, the projection on the loosely mounted roller
catches against the projection on the fixed collar of the shaft at that end, and
causes the shaft and roller to turn together, the friction being sufficient to pre-
vent the shaft turning when the projections are not in contact.
The accompanying drawing is a detached front view of a printing machine
frame shewing the reciprocating type bed and inking roller, with the addition
of a rider roller constructed in accordance with our invention.
A is the type bed of the machine, B. the inking roller, which is operated
in the usual manner by contact with the type bed beneath. C is our improved
rider roller, bushed at each end, and loosely mounted on shaft D. The latter is
formed or provided with screw thread E, which screws into a tapped hole in the
bush F formed to receive it. The bushes of the rider C are formed with lugs or
projections G, which correspond with projections H on collars J fixed to the
shaft D.
The loosely mounted rider C not only revolves in either direction through
frictional contact with the inking roller B, but also has an end to end movement
through engagement of tapped bush F with screw thread E. The recipro-
cating movement of the rider is brought about by the movement of the type

page_text: bed A, which is transmitted to the rider through the medium of inking roller B.
It is necessary that the shaft 1 of the loosely mounted roller C should remain
stationary during its end to end movement, and in order to effect this result
satisfactorily we provide it with frictional resistance of such a nature as to permit
of the end to end traverse of the loosely mounted rider C so far as one or other
of the fixed collars J as the case may be, after which the lug or projection G on
the roller will engage with the projection H on such collar at that end, and then
the motion of the rider C will overcome such resistance, and both shaft D, and
rider C will revolve together.
For this purpose, we fit at one end of the shaft D a loose collar K formed with
two flat sides. The shaft is introduced into the usual slots provided for the recep-
tion of the shaft of inking roller B in the frame or standards L and M of the
machine, and the said loose collar K with the flat sides enters the slot at one
end L of the machine. Such loose collar or friction piece K is held in frictional
contact with the fixed collar N on shaft D by means of spiral spring 0, whose
tension may be regulated by tightening or slackening nuts P screwed on the end
of shaft D. The bearing of the other end of this shaft consists merely of a
boss secured to such shaft by a set screw, and provided with a neck, which
rests in the slot of the machine as shewn.
In case of any variation in the traverse or end to end movement of rider C,
whereby it moves in one direction more than the other, the lug G at that particular
end of the roller will engage with lug or projection H on collar J at that end,
and the rider will overcome the said frictional resistance of friction piece or flat
sided collar K, and both the rider and its shaft will revolve together, until a
reversal of motion takes place in the movement of the reciprocating type bed A.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we would observe that
we do not limit ourselves to the particular method herein before described and
illustrated of applying frictional resistance to shaft G, as it is perfectly obvious
that various means may be adopted to effect the same result, but declare that
what we claim is:-
1. The improved construction and arrangement of rider rollers of printing
machines, substantially as described, and shewn in the accompanying drawing.
2. In reciprocating type bed printing machines, a loosely mounted rider
roller C having an end to end movement on shaft D, limited by fixed collars J,
such shaft being held stationary by frictional resistance, until engagement of
Jug G on rider roller C, with lug H on one of such fixed collars at either end,
when both shaft and roller revolve together substantially as described and
illustrated.
3. Providing frictional resistance for the purpose of retaining the shaft of a
loosely mounted rider roller for printing machines, until both shaft and roller
are required to revolve together, substantially as described and illustrated.
Dated this 10th day of November 1898
RICHMOND & Co.,
Chartered Patent Agents, 12, Standish Street, Burnley.