Improvements in or relating to Lithographic Printing Machines.
Year: 1894

page_text: Date of Application, 28th M r., 1894
Complete Specification Left, 28th Dec., 1894-Accepted, 9th Feb., 1895
PROVISIONAL SPECIFICATION.
Improvements in or relating to Lithographic Printing Machines.
I, JONAS RUSBY, of 46 Sweet Street, Holbeck, Leeds, in the County of York,
Mechanic, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in lithographic machines, and its object
is to adapt an ordinary litho-machine for use in printing upon tin without
necessitating any structural alterations of such machines.
According to this invention on the ordinary framework of the machine is
mounted two stands, one at each end of the ordinary cylinder for supporting the
same. On the top of each of the said stands is mounted a smaller stand or support
for supporting in suitable bearings a second cylinder of any convenient diameter
which is mounted directly over the inking rollers, but with sufficient space left for
feeding directly into a swinging gripper without in any way altering the centres or
position of the bottom cylinder which is used for printing on paper. The swinging
gripper consists of two or more bow levers mounted on a shaft carried in suitable
bearings (provided on the smaller stands) over the second cylinder and a radial
reciprocating motion is imparted to the said gripper from the driving shaft of the
machine through suitable levers, gearing, racks and pinions, or it or their equivalents.
On the ends of the bow levers the grippers and plate are adjustably attached so as
to be capable of a lateral movement to suit the register instead of altering the
litho-stone in the carriage as is usually done.
The
In the plate is provided any desired number of bearings for the reception of the
sliding bars armed with projecting lips which form the grippers proper.
projecting lips are retained in contact with the bar by means of helical or other
springs. The swinging gripper is arranged to be radially reciprocated under the
said second cylinder so as to occupy the same, or nearly so, place as the gripper
on the ordinary litho' cylinder. In tin printing the ordinary gripper is removed.
When the swinging gripper is thus swung into position it is opened, by any suitable
When the
cam or tappet device, ready for receiving and feeding in the tin.
carriage of the machine has travelled its full extent the said gripper will have been
gradually closed and have gripped the tin. The ordinary litho' cylinder, which
has received the impression from the stone on to its periphery, then commences its
action and for several inches moves the swinging gripper at the same radius as its
periphery, and then by means of cams and levers, connected with the driving shaft.
of the machine actuates the swinging gripper until the tin is raised into a vertical
position for depositing the printed tin upon a carrying board, armed with a
retaining ledge and handle for removing purposes without handling thereof, when-
ever the grippers are opened by suitable cam and tappet device, or it or their
equivalents.
Instead of fastening the lithographic stone by screws mounted in the sides of the
carriage, and which by the pressure thereof required to hold the stone in position
is very liable to spring the carriage, thereby causing a hollow under the carriage
which causes the stone and carriage to break when the pressure of the cylinder
comes on them, I provide a bed to fit the carriage, and on the outside of the bed is
provided any desired number of bosses,-say for instance four,-through which are
screwed the retaining screws. By this means the carriage is free from all strain,
and the stone can be adjusted as required. This arrangement is specially adapted
for machines employed for lithographic and tin printing.

page_text: To adjust the feed board to the proper angle I mount it on any desired number
of levers, say for instance four, and connect or joint the opposite ends of the
levers to the ordinary litho' board of the machine.
The elevated feed board can thereby be adjusted to the proper angle for feeding
in the tin, and at the same time more room and light is obtained for inspecting the
work on the bottom cylinder. When the machine is changed from printing on tin
to paper and for ordinary litho' work the elevated board can then be lowered to the
ordinary angle.
Dated the Twenty-seventh day of March 1894.
JONAS RUSBY,
By W. Fairburn-Hart,
Agent.
Improvements in or relating to Lithographic Printing Machines.
I, JONAS RUSBY, of 46 Sweet Street, Holbeck, Leeds, in the County of York,
Mechanic, 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 lithographic machines, and its object
is to adapt an ordinary litho-machine for use in printing upon tin, (as well on paper)
without necessitating any structural alterations of such machines.
In the drawings :
-1
Figs. 1 and 2 are part side elevations of the machine showing the swinging gripper
in its highest and lowest positions.
Figs. 3 and 4 are respectively an end elevation and a plau looking at the top of
the parts shown at Figs. I and 2.
Figs. 5 and 6 are side elevations of machine drawn to a smaller scale showing
means for raising and lowering the swing gripper to its highest and lowest
positions.
Figs. 7 to 31 are elevations and pluns of various details.
Figs. 32 and 33 are respectively an elevation and a plan of bed for carrying the
lithographic stone.
Like parts in all the views are marked with similar letters of reference.
A is the ordinary framework of a lithographic machine on which are mounted
two stands B B one at each end of the ordinary cylinder (for supporting the same.
On the top of each of the said stands B is mounted a smaller stand D for supporting
in suitable and adjustable bearings a second cylinder E of any convenient diameter
which is mounted directly over the inking rollers, not shown in the drawings, but
with sufficient space left for feeding either into the grippers C' of the lower cylinder
or directly into a swinging gripper F to be hereafter described without in any way
altering the centres or position of the bottom cylinder C which may be also used
for printing on paper as well as on tin.
by means of the bolts b which
The lower gripper C may
ordinary manner
or by any
The stands D may be adjusted on the stands B
slide in the slot holes b¹ formed in the stands B.
be of the usual construction and operated in the
convenient means.
The two cylinders C and E may be geared together by spur wheels G on one or
hoth ends thereof. In the drawings I have shown them geared at both ends of the
cylinders, but this is not absolutely necessary, as the top cylinder could easily be
made to work patisfactorily with one spur wheel gearing with one of the stationary
wheels on the lower cylinder.

page_text: Motion is imparted to the lower cylinder C in the usual manner and by ordinary
1: eans from the carriage of the machine not shown in the drawings.
The swinging gripper F consists of two or more bow levers Fi (three are shown
in the drawings and stayed by a bolt F13) mounted on a shaft F' carried in suitable
bearings d (provided on the smaller stands D) over the second cylinder E and a
ridial reciprocating motion may be imparted to the said gripper F from the bottom
'riving shaft H (see Figs. 5 and 6) of the machine through suitable levers, gearing,
jacks and pinions or it or their equivalents. On or near the outer ends of the bow
levers Fare fixed bearings F10 through which passes the shaft F*, on which the
rippers F are mounted. On the shaft Fx are also mounted bosses F. In both
the bearings and bosses recesses are formed therein for the reception of the helical
springs F one end of which are made fast to the bearings whilst the other is
attached to the shaft for retaining the grippers in a closed position. To the outer
ends of the bow levers is fixed a plate F** against which the grippers work.
The
plate F** may if desired be adjustably attached to the bow levers so as to be
apable of a lateral movement to suit the register of the machine instead of altering
the litho-stone in the carriage as is usually done.
In the plate is provided any desired number of bearings for the reception of the
sliding bars armed with projecting lips which form the grippers proper. The
projecting lips are retained in contact with the bar by means of helical or other
springs.
In the drawings at Figs. 1 to 4 I have shown the swinging gripper F reciprocated
by the following meaus, namely; on one end of the shaft is mounted and fixed a
lever F3 which is connected by the rod F4, provided with a screwed end and lock
outs between which the upper end of lever F is adjustably secured. The lower
end of lever F is pivoted or jointed at f to the side of the stand B. Between
the two ends of the lever F and in any suitable position on the said
lever is mounted a runner F arranged to work against the periphery of a cam I
mounted on the shaft of the top cylinder. But when the swinging gripper is
operated as at Figs. 5 and 6 the runner F' is mounted on the end of a separate arm
or lever F instead of on the lever Fe as shown at Figs. 1 and 2 or a bell crank lever
may be employed.
J is a tappet lever which is pivoted at one end to the stand D and its opposite or
free end is held up to its work by a spring J'.
On the lever J is mounted a
runner J2 arranged to work against the perimeter of the cam J3 which is also
mounted on the shaft of the top cylinder E, but on the opposite end to that on
which cam I is fixed.
As
During the radial reciprocation of the swinging gripper F and rotation of the
cylinder E, a runner J on the end of a small lever .Ts mounted on the end of the
gripper shaft F is brought in contact with the tappet lever J which is depressed
onto the runner J' by cam J³ for opening the gripper F for receiving the tin.
soon as the runner J has passed off the projecting part of cam J³ the gripper F is
closed and by the continued upward and outward motion of the bow levers F¹ the
gripper F will carry the tin to the delivery position.
When the gripper F and bow levers F have been raised by cam I, levers F° F³
and rod F* to the delivery position shown at Fig. 1, the gripper F will be opened
by the runner J* coming in contact with the pin K adjustably mounted in the upper
end of the fixing K' and the tin will be released from the gripper F and drop into
the carrying board L.
L is the carrying board which may when required be armed with a handle L' and
retaining ledge L2 when the board is operated by hand. But when the board L is
required to be automatically operated by the machine, the board L is mounted on a
shaft L carried by brackets L' fixed to the framework A and it is quickly raised
into position after the swinging gripper has lifted the tin sufficiently high so that
the lower end of the tin will not come in contact with the board L. The required
motion for operating the board L is obtained from cam L³ on driving shaft H
and conveyed to the board L through lever Lº, rod L', and crank L*. But for

page_text: very strong and heavy work the swinging grippers and board L may be dispensed
with and in place thereof I employ the adjustable inclined guides M which are fixed
to the supports M' adjustably mounted on the horizontal bar M' fixed to the
supports B. In this case the tin or other material may be fed from feed board N'
direct between the two cylinders C and E and after receiving the printing
impression is delivered on to the inclined guides M.
To adjust the feed board N to the proper angle I mount it on any desired
number of levers N' (Figs. 5 and 6),-say for instance four, and connect or joint
the opposite ends of the levers N¹ to the ordinary litho' board N2 of the
machine.
The elevated feed board N can thereby be adjusted to the proper angle and fixed
by screws for feeding in the tin, and at the same time more room and light is
obtained for inspecting the work on the bottom cylinder. When the machine is
changed from printing on tin to paper and for ordinary litho' work the elevated
board N, can then be lowered to the ordinary angle.
Instead of fastening the lithographic stone by screws mounted in the sides of the
carriage, and which by the pressure thereof required to hold the stone in position
is very liable to spring the carriage, thereby causing a hollow under the carriage
which causes the stone and carriage to break when the pressure of the cylinder
comes on them, I provide a bed O to fit the carriage, and on the outside of the
bed is provided any desired number of bosses, say for instance four,-through
which are screwed the retaining screws 0%. By this means the carriage is free
from all strain, and the stone can be adjusted as required. This arrangement is
specially adapted for machines employed for ordinary lithographic and tin
printing.
The action of the machine is as follows:-
When the machine is employed for printing on paper only, the cylinder E is not
in use and may, by means of the slot holes 61, be moved out of gear with
cylinder C. The paper is fed into the machine and it is operated in the ordinary
manner.
But when the machine is to be employed for printing on tin the cylinder E is
geared with and adjusted to the cylinder C. The feed board N is also adjusted to
the required angle for feeding the material into the gripper or grippers.
The cams I, J (and L) and levers operated thereby are then in the positions
shown at Fig. 2 (and Fig. 6). The machine is then set in motion and when the
carriage reaches the driving shaft end of the machine, the tin having been fed into
gripper C, and the handle of the check lever moved for throwing the cylinder C
into action, the cylinders C and E commence to rotate, and the tin is drawn in by
gripper C until it is in a position to receive the pressure of the top cylinder E
from its surface Ex. The gripper C then opens and releases its hold on the tin
which is then carried forward by the pressure of the two printing surfaces (C*
and Ex) of the cylinders C and E into the swinging gripper F.
Just before the tin is traversed forward to the gripper F it is opened as previously
described by the tappet lever J being acted upon by the projection on cat J³, and
as soon as the tin has been passed within the gripper F the runner J2 will have
passed off the projection of the cam J and the gripper F will have closed. The
swinging gripper then commences to be raised-drawing with it the tin which as it
passes between the cylinders receives the printing impression--by the cam I acting
upon runner F7 on lever F whereby on the lever Fe being pushed to the left hand
for raising the bow levers F to the position shown at Fig. 1 by means of their
connection as described with the first mentioned lever.
As soon as the tin has left the cylinders the printing surface C× of cylinder C
will be in a position to receive from the stone the impression upon its blanket for
the next printing. Whilst this is being done the swinging gripper is raised to the
position shown at Fig. 1 and the tin released from said gripper by the runner J
coming in contact with the pin K which opens the gripper.
During the completion of the traverse of the carriage from the driving end of the

page_text: machine, and when only cams I and J³ are employed for operating the swinging
gripper, the latter will be returned to its normal position as shown at Fig. 2. But
when it is required to run the machine at a greater speed than say four or five
hundred revolutions per hour for tin printing, which is usually slower than for
printing on paper, then I prefer to use the cam L' and arrange the levers as shown
at Figs. 5 and 6. When the cam L is employed the swinging gripper F may be
arranged to complete its upward and outward stroke and to be opened for releasing
its hold upon the tin as the carriage of the machine is completing its traverse at the
end of the machine opposite to that at which the driving shaft is placed. This
permits of the swinging gripper slowly returning to its normal position, as at Fig. 2,
during the return traverse of the carriage. It will readily be understood that both the
cams I and L may be used together in which case the cam I would be employed
for starting and raising the swinging gripper and the cam L' for closing it; or either
of the said cams may be employed separately and alone for performing both
operations; or the starting and raising of the swinging gripper may be imparted
from a smaller cam on the top cylinder E and the completion of the raising and
lowering of the said gripper performed by a cam such as L' on the bottom driving
shaft of the machine.
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. A lithographic machine for printing on paper and tin having two cylinders
such as C and E arranged so that one of the said cylinders may be moved out of
gear with the other when printing on paper, and brought into gear when printing
on tin.
2. In a lithographic machine substantially such as herein described the com-
bination of the cylinders C and E arranged so as to be thrown in and out of gear
with each other, the swinging gripper F mounted on the support D of cylinder E
and means described for operating the same substantially as set forth and illustrated
with reference to Figs. 1 to 6 of the accompanying drawings.
3. In a lithographic machine substantially such as herein described a swinging
gripper such as F for receiving the tin as it leaves the cylinders after passing
between them from the feeding board and then carrying the printed tin to an upright
position prior to depositing it upon the carrying board, said swinging gripper being
arranged and operated substantially as herein described and illustrated in the
accompanying drawings.
4. In a lithographic machine a bed O armed with bosses O' and screws O*
arranged substantially as described and illustrated at Figs. 32 and 33 of the
accompanying drawings.
5. In a lithographic machine a feed board N jointed to the ordinary feed board
so that it can be elevated and fixed to any required angle substantially as described
and illustrated at Figs. 5 and 6 of the accompanying drawings.
Dated the Twenty-seventh day of December 1894.