Improvements in the Driving Mechanism of Printing Machines.
Year: 1899

page_text: Date of Application, 12th July, 1899
Complete Specification Left, 12th Apr., 1900-Accepted, 12th May, 1900
PROVISIONAL SPECIFICATION.
Improvements in the Driving Mechanism of Printing Machines.
I, ROBERT CUMMING ANNAND, of Cornwallis Street, South Shields, in the
County of Durham, Engineer, do hereby declare the nature of this invention
to be as follows:-
:-
My invention consists in the construction and adaptation of means whereby
multiple printing and folding machines are driven by a prime mover such as an
electric motor.
The invention is particularly applicable to a rotary web printing machine
which is composed of two sections each with independent driving gear which
permits of either section being worked while the other stands still or both being
worked together.
Hitherto, when such a double drive has been required it has been the practice
to use one or more motors for each section.
Multiple motors are expensive and occupy more space than can be conveniently
spared for them.
According to my invention I make one motor drive both sections and provide
such make and break mechanical connections between the motor and the machine
that either half can be run while the other stands still or both sections can be
run together.
The invention also includes the combination with such driving devices of slow,
motions for each half which are used in threading the webs through the printing
machine when this has to be done.
In order to make one motor drive both sections I place the motor alongside
the machine with its axis parallel to the side of the machine. The two driving
shafts of the machine are of sufficient distance apart to allow the motor being
set in between them, the driving shafts being at right angles to the motor shaft.
The motor is thus placed in a position so that with the devices I am about to
describe the one half of the machine is driven by one end of the motor and the
other half by the other end.
On each end of the motor axle I key on a mitre or preferably a bevel wheel.
This wheel gears with another wheel attached to a sleeve which runs loose on
the axle of the machine. On one end of this sleeve there is formed an internal
conical disc, and on the other end, which is reduced as small as possible is a
series of circumferential conical or tapered grooves.
Upon the driving shaft and opposite the internal conical end is an external
conical disc. This disc is moveable along the axle upon keys sunk in the shaft
which allow an end movement to the disc but secure that the shaft and disc
revolve together.
In place of these keys I find it preferable to key an arm on to the shaft which
works in a slot in the interior of the cone and thereby acts as a driver. The.
arrangement provides that the motor can be started and run at full speed at the.
same time driving only the loose sleeve on the main driving shaft. When it is
desired to run the printing machine the external sliding cone is pressed inside
the cone on the sleeve and the machine is driven by the frictional contact of
these two members. Suitable controlling levers for moving the cones in and
out of contact are provided and these levers from both driving gears are brought
to a common point where they can be controlled and operated by an attendant.

page_text: In order to provide means for quickly stopping the machine I make the other
end of the moveable cone in the form of another cone or flat disc. Opposite this
cone or disc I attach a corresponding disc to the outer framework which carries
the mechanism of the driving gear.
The moveable friction cone as already explained when forced inside the cone
on the sleeve which receives its motion from the motor will start that section of
the machine.
When the cone is drawn back a further movement of the controlling gear in
the backward direction will bring the brake dise on the cone in contact with the
stationary disc on the framework and the friction caused by the pressure of the
one against the other will act as a brake and quickly bring the machine to a
standstill.
The mechanism employed is the same on both driving, shafts and on both ends
of the motor.
Instead of using conical friction gear any other form of friction gear may be
adopted.
In order to provide a slow motion for threading the webs through the machine
I use the following mechanism.
On the end of the loose sleeve circular tapering grooves are cut as already
explained. Opposite these grooves I mount a large wheel which runs loose on
another axle parallel to the driving shaft. This wheel has tapering grooves cut
in its circumference corresponding with the grooves in the loose sleeve. Attached
to the side of this large wheel is a small gear wheel which meshes with a large
wheel running loose on the main driving shaft of the machine. On the side of
this wheel is a pawl which engages with a ratchet wheel keyed on the shaft.
The large wheel with the grooves in it runs loose on its axle. Both ends of this
axle are made smaller and are eccentric to the part of the axle which carries
the wheel. These eccentric ends are carried in bearings on the framework.
Levers and connecting links are arranged so that this axle with the eccentric
bearings can be partly rotated. By giving it say half a turn or less the large
wheel with the grooves around the rim is brought into contact with the grooves
or taper rings on the loose sleeve driven by the motor the friction thereby set
up will drive the machine slowly through the speed reducing train described.
By using a pawl and ratchet wheel to communicate the slow motion the
machine can
be started full speed by the main driving gear when the slow
motion gear is at the same time in gear without doing any harm.
If the external friction cone and also the brake disc are each covered with a
layer of millboard it forms a desirable means of friction and is preferable to
having both rubbing surfaces metal.
COMPLETE SPECIFICATION.
Improvements in the Driving Mechanism of Printing Machines.
I, ROBERT CUMMING ANNAND, of Cornwallis Street, South Shields, in the
County of Durham, Engineer, 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:-
My invention consists in the construction and adaptation of means whereby
mutiple printing and folding machines are driven by a prime mover such as an
electric motor.
The invention is particularly applicable to a rotary web printing machine
which is composed of two sections each with independent driving gear which

page_text: permits of either section being worked while the other stands still or both being
worked together.
Hitherto, when such a double drive has been required it has been the practice
to use one or more motors for each section.
Multiple motors are expensive and occupy more space than can be conveniently
spared for them.
According to my invention I make one motor drive both sections and provide
such make and break mechanical connections between the motor and the machine
that either half can be run while the other stands still or both sections can be
run together.
The invention also includes the combination with such driving devices of slow
motions for each half which are used in threading the webs through the printing
machine when this has to be done.
In order to make one motor drive both sections I place the motor alongside
the machine with its axis parallel to the side of the machine. The two driving
shafts of the machine are of sufficient distance apart to allow the motor being
set in between them, the driving shafts being at right angles to the motor shaft.
The motor is thus placed in a position so that with the devices I am about to
describe the one half of the machine is driven by one end of the motor and the
other half by the other end.
Figure 1 is a plan showing the right hand half of the driving mechanism,
the left half of which is exactly similar to the other being omitted, the mechanism
for controlling it being however shown. Figure 2 is a side elevation of Figure 1
and Figure 3 is an end elevation.
a is an electric motor and a¹ is its axle.
Un each end of the motor axle a¹ I key on a mitre or preferably a bevel
wheel. This wheel gears with another wheel 6' attached to a sleeve which
runs loose on the axle c of the machine. On one end of this sleeve there is
formed an internal conical disc 62, and on the other end, which is reduced as
small as possible is a series of circumferential conical or tapered grooves 63.
Upon the driving shaft and opposite the internal conical end 2 is an
external conical disc c¹. This disc is moveable along the axle c upon keys sunk
in the shaft which allow an end movement to the disc but secure that the shaft
and disc revolve together.
In place of these keys I find it preferable to key an arm d on to the shaft c
as shown which works in a slot in the interior of the cone and thereby acts
as a driver. The arrangement provides that the motor can be started and run
at full speed at the same time driving only the loose sleeve bon the main
driving shaft c. When it is desired to run the printing machine the external
sliding cone c¹ is pressed inside the cone on the sleeve and the machine is
driven by the frictional contact of these two members. Suitable controlling
levers for moving the cones in and out of contact are provided and these levers
from both driving gears are brought to a common point where they can be con-
trolled and operated by an attendant..
In the arrangement shown e is a strap working in a groove in the stem of-
the cone and pivotted to the levers f which are pivotted at f' and are con-
nected by the rod g to the arm gl fixed to the rocking shaft ggs are arms fixed
to the shaft and having pivotted to them a nut in which a screw on the
end of the shaft h works. is a hand wheel for turning the shaft h.
In order to provide means for quickly stopping the machine I make the other
end of the moveable cone c¹ in the form of another cone or flat disc . Oppo-
site this cone or disc I attach a corresponding disc or surface to the outer frame-
work which carries the mechanism of the driving gear.
The moveable friction cone as already explained when forced inside the
cone 62 on the sleeve b which receives its motion from the motor a will start
that section of the machine.
When the cone is drawn back a further movement of the controlling gear

page_text: in the backward direction will bring the brake surface on the cone in contact
with the stationary surface ; on the framework and the friction caused by the
pressure of the one against the other will act as a brake and quickly bring the
machine to a standstill.
The mechanism employed is the same on both driving shafts and on both ends
of the motor.
Instead of using conical friction gear any other form of friction gear may be
adopted.
In order to provide a slow motion for threading the webs through the machine
I use the following mechanism.
On the end of the loose sleeve b circular tapering grooves 63 are cut as already
explained. Opposite these grooves I mount a large wheel k.which runs loose.
on another axle parallel to the driving shaft c. This wheel has tapering
grooves cut in its circumference corresponding with the grooves in the loose
sleeve. Attached to the side of this large wheel k is a small gear wheel which
meshes with a large wheel m running loose on the main driving shaft c of the
machine. On the side of this wheel is a pawl m' which engages with a ratchet
wheel keyed on the shaft c. The large wheel with the grooves in it runs
loose on its axle 1. Both ends of this axle are made smaller and are eccentric
to the part of the axle which carries the wheel. These eccentric ends are
carried in bearings 12 on the framework. is an arm fixed to the shaft and
connected by the rod to the arm fixed to the bevel wheel which gears
with the wheel on the shaft p. 2 is a lever fixed to the shaft and adjacent
to the hand wheel h¹. By giving the shaft p say a half turn or less by means of
the lever the large wheel with the grooves around the rim is brought into
contact with the grooves or taper rings on the loose sleeve b driven by the
motor the friction thereby set up will drive the machine slowly through the speed
reducing train described.
By using a pawl and ratchet wheel to communicate the slow motion the
machine can be started full speed by the main driving gear when the slow
motion gear is at the same time in gear without doing any harm.
If the external friction cone c¹ and also the brake disc are each covered
with a layer of millboard it forms a desirable means of friction and is preferable
to having both rubbing surfaces metal.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
-
1. The combination of the two sections of a printing machine, a motor placed
alongside the machine, a shaft driven by the motor and projecting on both sides
of it, such shaft being at right angles to the driving shafts of the two sections,
gearing connecting the two ends of the motor shaft to the shafts of the sections,
and clutch mechanisms for independently connecting and disconnecting the 'two
sets of gearing.
2. The combination of the driving shaft of the machine, a sleeve loose on the
shaft, a motor driving the sleeve, means for connecting the sleeve to the shaft,
a friction surface on the sleeve and a friction surface fixed to the frame..
3. The slow motion gear substantially as described and illustrated in the
drawings.
4. Driving mechanisms for printing machines substantially as described and
illustrated in the drawings.
Dated this 9th day of April 1900.