Improvements in Wall Paper Printing Machines.
Year: 1894

page_text: Date of Application, 18th Dec., 1894
Complete Specification Left, 30th Jan., 1895-Accepted, 9th Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in Wall Paper Printing Machines.
I, WILLIAM HUBELI WALDRON, of 417, George Street, New Brunswick, in
the County of Middlesex, and State of New Jersey, United States of America,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
:-
This invention relates to wall paper printing machines in which two separate
printing machines with an intermediate drying apparatus are employed.
The object of the invention is to provide a new and improved registering
attachment for double cylinder wall paper printing machines whereby the speed of
the printing rollers of the second printing cylinder is automatically controlled, to
cause the second machine to accurately print or emboss the paper according to
the design already printed on the paper by the first machine and irrespective of
the shrinkage or expansion of the paper caused by the intermediate drying
apparatus.
The invention consists essentially of an electrically controlled compensating
device for regulating the speed of the printing rollers of the second machine,
according to the expansion and contraction of the paper caused by the first printing
and the subsequent beating of the paper.
In the accompanying drawings
Figure 1 is a diagrammatic side elevation of a two-cylinder wall paper printing
machine with an intermediate drying apparatus.
Figure 2 is an end elevation of the compensating device as applied on the second
machine. Figure 3 is a plan view of the same.
Figure 4 is an enlarged sectional elevation of part of the electric compensating
device.
Figure 5 is a plan view of part of the paper.
Figure 6 is an enlarged sectional side elevation of part of the compensating
mechanism, on the line 6-6 in Figure 7. Figure 7 is a transverse section of the
same; and
Figure 8 is a side elevation of the second machine.
The paper A to be printed on is formed on one or both selvedge edges with
apertures A' placed equal distances apart, as shewn in Figure 5. The apertures A¹
may be formed by separate special machines before the paper is wound upon the
roll B or the apertures may be produced by a suitable punching device C₁ arranged
as a part of the first wall paper printing machine C and in advance of the first
printing roller C³, as illustrated in Figure 1. The paper A, after leaving the
drying apparatus D and before passing upon the cylinder E' of the second
machine E, passes over a roller F held loosely on a shaft F1 journalled in suitable
bearings in the frame of the machine E. One end of the shaft F' is provided with
a gear wheel F in mesh with an intermediate gear wheel F in mesh with the
large gear wheel H for driving the printing rollers E' in the usual manner. This
gear wheel H is arranged next to the cylinder E but is mounted on a stud in alignment
with the shaft of the cylinder E². The gear wheel H has the same speed as the
cylinder E' as long as the design on the paper registers with the designs on the
TD 021

page_text: printing rollers E', but whenever there is a discrepancy in registering the printing
rollers E' with the design already on the paper then the said gear wheel H is
rotated at a higher or lower rate of speed so as to drive the printing rollers Er
accordingly, to match the design on the paper with the design on the printing
rollers C. For this purpose a compensating device is used consisting principally
of the transmitting gear wheel H for the printing rollers El and an auxiliary
driving mechanism for increasing or decreasing the speed of the said transmitting
gear wheel H and a shifting device for connecting and disconnecting the said
transmitting gear and the said speed and auxiliary driving mechanism. The
auxiliary driving mechanism, as well as the transmitting gear wheel H for revolving
the printing rollers at a proper rate of speed relative to the pattern or design
already printed on the paper by the first machine, is preferably of the construction
presently to be described in detail, it being understood that for changing the gear
from the normal to another rate of speed I provide an electro-magnetic shifting
device controlled automatically from the paper A, such device being provided with
a wheel G formed on its periphery with lugs G'adapted to engage the apertures A¹
of the paper A as the latter passes over the roller F, the said wheel G being
arranged alongside the roller and loosely journalled with its hub G² on the
shaft F, see Figures 3 and 4. On the hub G is secured a radially extending
shaft G mounted to turn in the hub and pressed on by a spring Gʻ, see Figure 4,
the upper or outer end of the said shaft carrying a wing G adapted to make
contact with a wing G held on a shaft G' likewise pressed on by a spring G* and
journalled in a hub G' secured on the shaft F'. The hubs G and G' are insulated
from the shaft F. The springs G and G hold the wings G and G' in contact
with each other, but permit the wings to yield whenever their corresponding shaft
has a faster movement and a wing pushes on its opposite mate.
Now, as long as the paper registers by its apertures A' with the lugs G' of the
wheel G and the latter rotates at the same rate of speed as the shaft F1 driven
from the gear wheel H, then the wings G and G are in contact with each other,
but when the apertures A' are brought nearer together by shrinkage of the paper,
then the speed of the wheel G is accelerated and consequently causes the wing G
to move away from the wing G', thus breaking the contact between the two wings.
A similar operation takes place when the paper has expanded but then the wheel G
is retarded and the wing Ge moves past, and away from, the wing G³. The lugs G',
owing to their conical shape, readily enter the apertures A' even when the distance
between two successive lugs is slightly greater or less than the distance between
adjacent apertures A', it being, however, understood that the apertures A' are
originally punched a distance apart corresponding to the distance between successive
lugs G¹ on the wheel G. The hubs G and G are engaged by contact plates I
and I held insulated on a rod 12 and connected by wires 1' and 1' with a relay 16
and a battery I connected by wires 17 and 18 with an electro-magnet J supported
in a suitable bracket forming part of the main frame of the machine E, see Figure 2.
The armature lever J¹ for this magnet J forms at its upper end a shifting fork J'
engaging the hub K₁ of a gear wheel K mounted to turn with and to slide on a
shaft K journalled in suitable bearings on a bracket forming part of the main
frame of the machine, the said shaft K being driven by the differential speed and
auxiliary driving mechanism hereinafter more fully described. The gear wheel K
is in mesh with a gear wheel L mounted to rotate loosely on a sleeve N secured on
the driving shaft O extending transversely and provided at one outer end with a
pulley O'connected by belt with suitable machinery for imparting a rotary motion
to the said shaft O. On the latter is also secured a gear wheel O' in mesh
with a large gear wheel E' secured on the shaft of the cylinder E² to rotate the
latter from the shaft O. A gear wheel O held on the shaft O next to the gear
wheel O' meshes into a large gear wheel E' for driving the sift cloth for furnishing
the colours to the printing rollers E'. On the wheel L is formed or secured a bevel
gear wheel L'in mesh with a bevel gear wheel Q mounted to rotate on a stud N¹
forming part of the sleeve N. On the top of this bevel gear wheel Q is formed or

page_text: secured a spur wheel Qin mesh with a pinion R secured on a shaft R' journalled
in suitable bearings formed on the sleeve N, as plainly illustrated in Figure 6. On
this shaft R1 is secured a worm R' in mesh with a worm wheel P¹ formed on the
hub of the gear wheel P mounted to rotate loosely on the sleeve N and in mesh
with the gear wheel H. Now, when the gear wheel K is in mesh with the gear
wheel L and the shaft O is rotated, then the latter gives a revolving motion to the
:leeve N so that the shaft R' journalled in the sleeve is carried round and by the
worm R² locked in the worm wheel P¹, rotates the latter on the sleeve N, and
consequently rotates the gear wheel P in mesh with the gear wheel H to rotate the
Jatter and the printing rollers. The gear wheels K and L are not in mesh as long
as the electro-magnet J does not attract its lever J', that is, as long as the wings G
and G are in contact with each other, and proper printing of the paper takes place
at the cylinder E' and printing rollers E¹. As a rule, the pattern or design when
coming to the second machine E is long and consequently the printing rollers E¹
have to run slower than the normal rate to permit a corresponding longer pattern
to register with the pattern already on the paper. Now, whenever the paper has
extended, then the wheel G rotates slower so as to break the contact between the
wings G and G thus breaking the circuit on the relay to close the circuit for the
magnet J to attract the armature lever J' to shift the gear wheel K in mesh with
the gear wheel L.
When the gear wheel K is out of mesh with the wheel L then the rotary motion
of the shaft is transmitted by its fixed sleeve N carrying around the stud N' gear
wheel Q, pinion R, shaft R', and the worm R2, locked with the worm wheel P',
to the gear wheel P, and to the wheel H driving the printing rollers. Whenever
the pattern or design again runs properly relative to the printing rollers E¹, then
the wheel C is in its normal position, so that its wing G³ is again in contact with the
wing G to close the circuit for the relay to break the circuit for the magnet and to
cause the magnet F to release the lever J' so that the gear wheel K is again thrown
out of mesh with the gear wheel L. The normal result of driving the transmitting
gear wheel H by the pinion P on the shaft O is that the surface speed of the
printing rollers E' is the same as the surface speed of the large cylinder E
around which the paper runs, and which is driven from the shaft O as previously
explained, the sizes of the gear wheels E³ and O2 being such as to produce this
result.
The shaft K carrying the gear wheel K is driven by a differential speed
mechanism S from the shaft T carrying a pinion T¹ in mesh with the large gear
wheel E secured on the cylinder E, so that the shaft T is driven from the gear
wheel E. On one end of the shaft T is secured a friction disc T, engaged on
its faces by oppositely arranged friction wheels U and U' journalled in a frame U'
fitted to slide longitudinally on a bracket forming part of the main frame for the
machine E. The frame U is adapted to be shifted longitudinally by the operator,
and for this purpose a screw rod Ù³ screws in the said bracket and engages the
frame U so as to move the latter longitudinally whenever the operator turns the hand
wheel U on the screw rod U. Opposite the friction wheels U and U¹ are held a
second set of friction wheels U and U respectively, engaging the faces of a friction
disc K secured on the shaft K previously mentioned.
Now, it will be seen that when the operator shifts the frame U2 by turning the
hand wheel U, then the friction wheels U, U', U', and U, are shifted on the faces
of the discs T and K, to impart a variable rate of speed to the disc K³ from the
disc T. This variable movement causes a faster or slower rotation of the gear
wheels K, L, L, Q, Q', and R, whereby the shaft R¹, worm R, worm wheel P¹,
and gear wheel P, are caused to rotate slower or faster thus causing the gear
wheel H to rotate slower or faster on account of being in mesh with the gear
wheel P.
It is understood that when the operator, for instance, turns the hand wheel U* so
as to shift the frame U to the right, then the disc T' is engaged nearer its centre
by the set of friction wheels U and U₁, and the other friction wheels U, U*, move

page_text: further out from the centre of their friction disc K'. By this movement a slower
rotary motion is given to the set of friction wheels U, U, U', and U', and a faster
motion to the disc K³, and the gearing connected therewith at its shaft K³, so that
the gear wheel H rotates slower to turn the printing rollers at a rate of speed to
force their designs to soon register with the design already printed on the wall
before it reaches the printing machine E. By turning the hand wheel U* in the
opposite direction, a reverse movement of the several parts takes place, that is, the
gear wheel H and the printing rollers E' are rotated faster to properly register with
the design.
paper
It is expressly understood that as long as the gear wheel K is in nesh with the
gear wheel L, the transmitting gear wheel drives the gear wheel H and the printing
rollers E at a rate of speed different from that of the shaft O but when the electro-
magnetic shifting device controlled from the paper at a time proper printing of the
paper takes place, and the circuit is closed at the now contacting wings G³, Gª;
then the gear wheel K is thrown out of mesh with the gear wheel L, and the
transmitting gear rotates the gear wheel H and the printing rollers E' at the normal
rate of speed and in unison with the cylinder E³.
The normal position of the wing G relative to the wing G is regained by
throwing the auxiliary driving mechanism into action and thereby accelerating or
retarding the motion of the gear wheel H, which drives the intermediate gear
wheels F, F, of which the latter is attached to the shaft F carrying the wing G.
The consequent accelerated or retarded motion of the shaft F finally brings the
wings Go, and G, in contact, and then the gear wheel K of the auxiliary driving
mechanism is thrown out of mesh with the gear wheel L, by the action of the
electro-magnetic shifting devices, as above explained. The speed of the gear
wheel K can be regulated at any time by the operator shifting the position of the
friction wheels U, U, U, and U, relative to their friction discs T, and K, so that
any desired differential speed can be given to the printing rollers relative to the
speed of the cylinder E³.
It is understood that this differential speed mechanism is usually adjusted but
once when first starting the machine, as the speed of the printing rollers E' is
afterwards automatically controlled by the electric arrangement above described
and controlling the compensating mechanism in the manner previously set forth.
The armature lever J for shifting the gear wheel K may be replaced by an
ordinary shifting lever under the control of an operator, to move the gear wheel K
into or out of mesh with the gear wheel L whenever necessary. In this case the
electro-magnetic shifting device is entirely dispensed with.
Dated this 18th day of December 1894.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.
Improvements in Wall Paper Printing Machines.
I, WILLIAM HUBELI WALDRON, of 417, George Street, New Brunswick, in the
County of Middlesex and State of New Jersey, United States of America,
Manufacturer, 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 wall paper printing machines in which two separate
printing machines, with an intermediate drying apparatus, are employed.
The object of the invention is to provide a new and improved registering attach-
ment for double cylinder wall paper printing machines, whereby the speed of the

page_text: printing rollers of the second printing cylinder is automatically controlled, to cause
the second machine to accurately print or emboss the paper according to the design
already printed on the paper by the first machine, and irrespective of the
shrinkage or expansion of the paper caused by the intermediate drying apparatus.
The invention cousists of an electrically controlled compensating device, for
regulating the speed of the printing rollers of the second machine, according to the
expansion and contraction of the paper caused by the first printing and the
subsequent heating of the paper.
The invention also consists of certain parts and details, and combinations of
the same, as will be fully described hereinafter and then pointed out in the
claims.
Reference is to be had to the drawings accompanying my Provisional Specifi-
ration, in which similar letters of reference indicate corresponding parts in all the
views.
Figure 1 is a diagrammatic side elevation of a two-cylinder wall paper printing
machine, with an intermediate drying apparatus;
Figure 2 is an end elevation of the compensating device as applied on the second
machine;
Figure 3 is a plan view of the same;
Figure 4 is an enlarged sectional elevation of part of the electric compensating
device;
Figure 5 is a plan view of part of the paper;
Figure 6 is an enlarged sectional side elevation of part of the compensating
mechanism, on the line 6-6 in Figure 7;
Figure 7 is a transverse section of the same; and
Figure 8 is a side elevation of the second machine.
As illustrated in Figure 1, the paper A unwinds from a roll B, and passes
through a wall paper printing machine C of the usual construction, having a
cylinder and a series of printing rollers, each fed from a suitable fountain in the
1.sual manner, to successively receive a ground and the several colors individually
applied to form the first design. The paper passes from the cylinder of this wall
paper printing machine C, to and through the drying apparatus D of any approved
construction, preferably consisting of movable belts heated by steam, as indicated
in Figure 1.
The paper after it has been dried so as to prevent blurring of the design already
printed thereon, is passed to a second wall paper printing machine E, to receive the
last impressions before passing to a second drying apparatus D³, and to the lath
supporting device D' for hanging the paper up for the final drying. The wall
paper printing machine C'is designed more especially for printing a design in the
ordinary colors on the paper A, and the wall paper printing machine E is for the
purpose of adding additional colors, gold, bronze or similar material to the design
already printed on the paper by the first machine C.
The paper is subjected to the drying process between the impressions of the
machines C and E, to permit of sufficiently drying the first impression before the
second impression is made, so as not to blur the original design. Now it will be
seen that the paper between the first and second wall paper printing machines C
and E will undergo considerable change, so that the printing rollers E' of the
second wall paper printing machine E will not at all times register with the design
printed on the paper by the first wall paper printing machine C. In order to
compensate for this irregularity, caused by the expansion or contraction of the
paper while passing from the first machine C to the second machine E, it is
necessary to provide a compensating device which regulates the speed of the printing
rollers E according to the design on the travelling paper A and independently of
the speed of the cylinder E² of the said second wall paper printing machine E.
The compensating device presently to be described is controlled and automatically
extended by the paper A according to the shrinkage or expansion of the latter due
to the first printing and drying.

page_text: The paper A to be printed on is formed on one or both selvedge edges with
apertures A placed equal distances apart, as shewn in Figure 5. The apertures A
may be formed by separate special machines before the paper is wound upon the
roll B, or the apertures may be produced by a suitable punching device C' arranged
as a part of the first wall paper printing machine C, and in advance of the first
printing roller C as illustrated in Figure 1.
The paper A, after leaving the drying apparatus D and before passing upon the
cylinder E² of the second machine E, passes over a roller F held loosely on a shaft F
journalled in suitable bearings in the frame of the machine E. One end of the
shaft is provided with a gear wheel Fin mesh with an intermediate gear
wheel F³ in mesh with the large gear wheel H for driving the printing rollers E' in
the usual manner. This gear wheel H is arranged next to the cylinder E³ but is
mounted on a stud in alignment with the shaft of the cylinder E. The gear
wheel H has the same speed as the cylinder E as long as the design on the paper
registers with the designs on the printing rollers E', but whenever there is a
discrepancy in registering the printing rollers E¹ with the design already on the
paper, then the said gear wheel H is rotated at a higher or lower rate of speed su
as to drive the printing rollers E' accordingly, to match the design on the paper
with the design on the printing rollers C. For this purpose a compensating device
is used consisting principally of the transmitting gear wheel H for the printing
rollers E¹ and an auxiliary driving mechanism for increasing or decreasing the
speed of the said transmitting gear wheel H and a shifting device for connecting
and disconnecting the said transmitting gear and the said speed and auxiliary
driving mechanism. The auxiliary driving mechanism, as well as the transmitting
gear wheel H for revolving the printing rollers at a proper rate of speed relative
to the pattern or design already printed on the paper by the first machine, is
preferably of the construction presently to be described in detail, it being under-
stood that for changing the gear from the normal to another rate of speed Ĭ provide
an electro-magnetic shifting device controlled automatically from the paper A,
Buch device being provided with a wheel G formed on its periphery with lugs Gi
adapted to engage the apertures A¹ of the paper A as the latter passes over the
roller F, the said wheel G being arranged alongside the roller F and loosely
journalled with its hub G on the shaft F, see Figures 3 and 4.
On the hub G is secured a radially extending shaft G³ mounted to turn in the
hub and pressed on by a spring G, see Figure 4, the upper or outer end of the said
shaft carrying a wing G adapted to make contact with a wing G" held on a
shaft G likewise pressed on by a spring GB and journalled in a hub G secured on
the shaft F. The hubs G³ and G'are insulated from the shaft F. The springs G'
and GB hold the wings G³ and G in contact with each other, but permit the wings
to yield whenever their corresponding shaft has a faster movement and a wing
pushes on its opposite mate.
Now as long as the paper registers by its apertures A' with the lugs G¹ of the
wheel G and the latter rotates at the same rate of speed as the shaft Fdriven from
the gear wheel H then the wings G³ and G are in contact with each other but
when the apertures A' are brought nearer together by shrinkage of the paper then
the speed of the wheel G is accelerated and consequently causes the wing G³ to
move away from the wing Go, thus breaking the contact between the two wings.
A similar operation takes place when the paper has expanded but then the wheel G
is retarded and the wing G moves past and away from the wing G. The lugs G¹,
owing to their conical shape, readily enter the apertures A¹, even when the distance
between two successive lugs is slightly greater or less than the distance between
adjacent apertures A', it being, however, understood that the apertures A' are
originally punched a distance apart corresponding to the distance between successive
lugs G₁ on the wheel G. The hubs G and G are engaged by contact plates I
and I held insulated on a rod 12 and connected by wires I and I' with a relay I'
and a battery I connected by wires 17 and 18 with an electro-magnet J supported
in a suitable bracket forming part of the main frame of the machine E, see

page_text: Figure 2. The armature lever J' for this magnet J forms at its upper end a
shifting fork J engaging the hub K of a gear wheel K mounted to turn with,
and to slide on, a shaft K2 journaled in suitable bearings on a bracket forming
part of the main frame of the machine the said shaft K2 being driven by the
differential speed and auxiliary driving mechanism hereinafter more fully
described.
The gear wheel K is in mesh with a gear wheel I mounted to rotate loosely on
a sleeve N secured on the driving shaft extending transversely and provided at
one outer end with a pulley O connected by belt with suitable machinery for
imparting a rotary motion to the said shaft O. On the latter is also secured a
gear wheel in mesh with a large gear wheel E secured on the shaft of the
cylinder E to rotate the latter from the shaft O. A gear wheel O' held on the
shaft O next to the gear wheel O meshes into a large gear wheel E* for driving
the sift cloth for furnishing the colours to the printing rollers E¹. On the wheel I
is formed or secured a bevel gear wheel L' in. mesh with a bevel gear wheel Q
mounted to rotate on a stud N forming part of the sleeve N. On the top of this
bevel gear wheel is formed or secured a spur wheel Qin mesh with a pinion R
secured on a shaft R' journalled in suitable bearings formed on the sleeve N, as
plainly illustrated in Figure 6. On this shaft R' is secured a worm R³ in meslɩ
with a worm wheel P¹ formed on the hub of the gear wheel P, mounted to rotate
loosely on the sleeve N, and in mesh with the gear wheel H. Now, when the gear
wheel K is in mesh with the gear wheel L, and the shaft O is rotated, then the
latter gives a revolving motion to the sleeve N, so that the shaft R¹ journulled
in the sleeve is carried around, and by the worm R³ locked in the worm
wheel P, rotates the latter on the sleeve N, and consequently rotates the gear
wheel P in mesh with the gear wheel H, to rotate the latter and the printing
rollers.
The gear wheels K and L are not in mesh as long as the electro-magnet does
not attract its lever J', that is, as long as the wings G and G are in contact with
each other, and proper printing of the paper takes place at the cylinder E³ and
printing rollers E. As a rule, the pattern or design when coming to the second
machine E is long, and consequently the printing rollers E¹ have to run slower than
the normal rate to permit a corresponding longer pattern to register with the
pattern already on the paper. Now, whenever the paper has extended, then the
wheel G rotates slower so as to break the contact between the wings G³ and Go, thus
breaking the circuit on the relay to close the circuit for the magnet J to
attract the armature lever J' to shift the gear wheel K in mesh with the gear
wheel L.
When the gear wheel K is out of mesh with the wheel L, then the rotary motion
of the shaft is transmitted by its fixed sleeve N, carrying around the stud N',
gear wheel Q', pinion R, shaft R', and the worm R' locked with the worm wheel Pi.
to the gear wheel P, and to the wheel H driving the printing rollers. Whenever
the pattern or design again runs properly relative to the printing rollers E', then
the wheel C is in its normal position, so that its wing G is again in contact
with the wing G³, to close the circuit for the relay to break the circuit for the
magnet, and to cause the magnet F to release the lever J' so that the gear wheel K
is again thrown out of mesh with the gear wheel L.
The normal result of driving the transmitting gear wheel H by the pinion P on
the shaft O, is that the surface speed of the printing rollers E' is the same as the
surface speed of the large cylinder E' around which the paper runs, and which is
driven from the shaft Ō as previously explained, the sizes of the gear wheels E³
and O' being such as to produce this result.
The shaft K carrying the gear wheel K is driven by a differential speed
mechanism S, from the shaft T carrying a pinion T'in mesh with the large gear
wheel E secured on the cylinder E², so that the shaft T is driven from the gear
wheel E. Ou one end of the shaft T is secured a friction disk T³, engaged on its.

page_text: faces by oppositely arranged friction wheels U and U₁ journalled in a frame U
fitted to slide longitudinally on a bracket forming part of the main frame for the
machine E. The frame U³ is adapted to be shifted longitudinally by the operator,
and for this purpose a screw rod U screws in the said bracket and engages the
frame U so as to move the latter longitudinally whenever the operator turns the
hand wheel U* on the screw rod U. Opposite the friction wheels U and U' are held
a second set of friction wheels U and U respectively, engaging the faces of a
friction disk K* secured on the shaft K2 previously mentioned.
Now it will be seen that when the operator shifts the frame U by turning the
hand wheel U*, then the friction wheels U, U₁, U and U' are shifted on the faces
of the disks T' and K³, to impart a variable rate of speed to the disk K³ from the
disk T. This variable movement causes a faster or a slower rotation of the gear
wheels K, L, L', Q, Q' and R, whereby the shaft R', worm R², worm wheel P¹
and gear wheel P are caused to rotate slower or faster, thus causing the gear
wheel H to rotate slower or faster on account of being in mesh with the gear
wheel P.
It is understood that when the operator, for instance turns the hand wheel U* so
as to shift the frame U to the right, then the disk T is engaged nearer its center
by the set of friction wheels U and U', and the other friction wheels U*, U*, move
farther out from the center of their friction disk K. By this movement a slower
rotary motion is given to the set of friction wheels U, U, U and U, and a faster
motion to the disk K³ and the gearing connected therewith at its shaft K³, so that
the gear wheel H rotates slower to turn the printing rollers at a rate of speed to
force their designs to soon register with the design already printed on the wall
paper before it reaches the printing machine E. By turning the hand wheel U* in
the opposite direction, a reverse movement of the several parts takes place, that is,
the gear wheel H and the printing rollers E¹ are rotated faster to properly register
with the design.
It is expressly understood that as long as the gear wheel K is in mesh with the
gear wheel L, the transmitting gear wheel drives the gear wheel H and the
printing rollers E' at a rate of speed different from that of the shaft O, but when
the electro-magnetic shifting device controlled from the paper at a time proper
printing of the paper takes place, and the circuit is closed at the now contacting
wings G', G; then the gear wheel K is thrown out of mesh with the gear wheel L,
and the transmitting gear rotates the gear wheel H and the printing rollers E' at
the normal rate of speed and in unison with the cylinder E³.
The normal position of the wing G relative to the wing G is regained by
throwing the auxiliary driving mechanism into action and thereby accelerating or
retarding the motion of the gear wheel H, which drives the intermediate gear
wheels F, F, of which the latter is attached to the shaft F' carrying the wing G.
The consequent accelerated or retarded motion of the shaft F finally brings the
wings G and G in contact, and then the gear wheel K of the auxiliary driving
mechanism is thrown out of mesh with the gear wheel L, by the action of the
electro-magnetic shifting devices as above explained. The speed of the gear
wheel K can be regulated at any time by the operator shifting the position of the
friction wheels U, U', U³ and Ú, relative to their friction disks T' and K³, so that
any desired differential speed can be given to the printing rollers relative to the
speed of the cylinder E³.
It is understood that this differential speed mechanism is usually adjusted but
once when first starting the machine, as the speed of the printing rollers E' is
afterwards automatically controlled by the electric arrangement above described
and controlling the compensating mechanism in the manner previously set forth.
The armature lever J for shifting the gear wheel K may be replaced by an
ordinary shifting lever under the control of an operator, to move the gear wheel K
into or out of mesh with the gear wheel L whenever necessary. In this case the
electro-magnetic shifting device is entirely dispensed with.

page_text: Having now particularly described and ascertained the nature of my said inven-
Son, and in what manner the same is to be performed, I declare that what I
claim is,―
1. A wall paper printing machine, comprising two printing machines, a drying
apparatus intermediate of the said machines, and a compensating device for the
printing rollers of the second printing machine, to run the said printing rollers at a
speed corresponding to the design of the paper printed by the first printing machine,
substantially as shown and described.
2. A wall paper printing machine, provided with two printing machines, each
comprising a cylinder and printing rollers, and a compensating device for the
printing rollers of the second machine, to run the said printing rollers at a speed
corresponding to the design of the paper passing over the cylinders, independent of
the speed of the latter, substantially as shown and described.
3. In a wall paper printing machine of the class described, the combination with
the cylinder, of printing rollers for the said cylinder, gear wheels for driving the
said printing rollers, and a compensating mechanism for regulating the speed of the
said gear wheels according to the design already printed on the paper before
reaching the cylinder, substantially as shown and described.
4. A wall paper printing machine of the class described, provided with a
cylinder, printing rollers, and a compensating device for the printing rollers,
comprising a drive shaft adapted to rotate at a predetermined speed relative to the
cylinder, a friction disk held on the said driving shaft, two sets of friction wheels,
of which one engages the said friction disk, a second friction disk engaged by the
second set of friction wheels, a gearing for the shaft of the said friction disk, and a
transmitting device driven from the said gearing and having an operative connection
with the printing rollers, to modify the speed of the latter, substantially as shown
and described.
5. A printing machine provided with an impression cylinder and printing rollers,
and a driving mechanism for the said printing rollers, and provided with a speed
modifying device operatively connected with the said printing rollers for varying
the rate of speed of the printing rollers relative to the speed of the said impression
cylinder, substantially as shown and described.
6. A wall paper machine of the class described, provided with a compensating
device for driving the printing rollers at a higher or lower rate of speed, the said
compensating device comprising a driven transmitting gear wheel for rotating the
printing rollers, an auxiliary driving mechanism for the said transmitting gear
wheel to increase or decrease the speed of the latter, and an electro-magnetic
shifting device for connecting and disconnecting the said transmitting gear wheel
and the said auxiliary driving mechanism, substantially as described.
7. A wall paper machine of the class described, provided with a compensating
device for driving the printing rollers at a higher or lower rate of speed, the said
compensating device comprising a driven transmitting gear wheel for rotating the
printing rollers, an auxiliary driving mechanism for the said transmitting gear
wheel, to increase or decrease the speed of the latter, an electro-magnetic shifting
device for connecting and disconnecting the said transmitting gear wheel and the
said auxiliary driving mechanism, and a circuit breaker for controlling the said
electro-magnetic shifting device, and controlled from the paper to be printed,
substantially as described.
8. A wall paper printing machine of the class described, provided with an
electro-magnetic shifting device comprising a shifting lever, an electro magnet
adapted to attract and release the said shifting lever, and a circuit breaker in the
circuit for the said electro magnet, the said circuit breaker including rotary
parts closing the circuit when driven at a corresponding speed, and breaking the
circuit when travelling at a different rate of speed, substantially as shown and
described.
9. A wall paper printing machine provided with a circuit breaker comprising a
R

page_text: driven shaft, a spring-pressed wing held movable on the said shaft, a wheel driven
from the travelling wall paper, a second spring-pressed wing adapted to contact
with the said first named wing and held movable on the said wheel, and an electric
circuit connected with the said wings, substantially as described.
Dated this 30th day of January 1895.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.