Improvements in Lithographic Printing Machines for Printing upon Sheet Metal and other Materials which are Difficult to Bend, or if the Stones or Substitutes therefor used in such Machines would cause Inry or Subfor, or to the Printing Surfaces thereon.
Year: 1897

page_text: Improvements in Lithographic Printing Machines for Printing upon
Sheet Metal and other Materials which are Difficult to Bend, or if
Brought against the Stones or Substitutes therefor used in such
Machines would cause Injury to such Stones or Substitutes
therefor, or to the Printing Surfaces thereon.
I, JOSEPH KIRKBRIDE, of Chestnut Villas, Mansfield, in the County of Notting-
ham, Lithographic Printer, do hereby declare the nature of this invention to be
as follows:-
My invention consists in improvements in lithographic printing machines for
printing upon sheet metal and other materials which are difficult to bend or if
brought against the stones or substitutes therefor used in such machines would
cause injury to such stones or substitutes therefor or to the printing surfaces
thereon and the principal objects of my invention are to enable bending of the
materials to be printed to be avoided and so to avoid distortion of the impressions
or prints produced upon such materials and to obtain a better "register
accurate placing of the impressions or prints upon the materials operated upon
and to render such machines more convenient to feed or supply with the materials
to be printed upon and also to render such machines capable of being combined
with arrangements for automatically removing the sheets or pieces of material
printed upon from the positions which they occupy while being printed and
delivering them from the machines.
or more
According to my invention I provide in a lithographic printing machine of the
kind to which my invention relates a cylinder covered with indiarubber and a
carriage arranged to receive a lithographic stone or a substitute therefor and pro-
vided with a damping board or surface and also provided with a surface or bed
upon or in which the materials to be printed upon may be placed and remain while
being printed upon and I so arrange such cylinder and carriage that in each stroke
or movement which the said carriage or bed is caused to make in one direction
the said cylinder shall be caused to revolve twice. I provide a channel, shoot or
guide of any suitable form to enable the materials intended to be printed upon
to be supplied to the surface or bed on or in which they remain while being
printed and I may arrange such channel, shoot or guide to move in order that
the materials to be printed upon may be more readily removed from it and in con-
junction with such surface or bed I arrange a gripper or grippers to hold each
of the sheets or pieces of material successively supplied to such surface or bed
in position while it is being printed upon and a lifting device or devices which

page_text: may consist of a lever or finger or rod or levers or fingers or rods or any other
suitable means and is or are arranged to raise each sheet or piece of material
which has been printed upon from the said surface or bed so that it may be readily
removed from the surface or bed by an attendant or so that it may be seized by a
gripper or grippers which may remove it from such surface
or bed. The
gripper or grippers employed in a machine constructed according to my
invention to hold the sheets or pieces of material to be printed in position upon
the surface or bed aforesaid while they are being printed and the gripper or
grippers if there be any provided to remove the sheets or pieces of material
printed upon from the said surface or bed may be of any suitable form adapted to
the nature of the material upon which the machine in which it or they is or are
employed is intended to print and such gripper or grippers and the lifting device
or devices aforesaid may be arranged to be moved from time to time in the
requisite manner by means of any suitable mechanism brought into action by
the movement of the carriage or in any other suitable manner. The cylinder
covered with india-rubber is employed to receive impressions from the stone or
the substitute for a stone employed in the machine and to transfer such impres-
sions to the sheets or pieces of material to be printed upon and in order that it
may receive impressions from the stone or the substitute therefor and transfer
them to the sheets or pieces of material to be printed the said cylinder is made
to revolve twice in each movement of the carriage in one direction as has been
herein before mentioned being made to receive an impression from the stone or
the substitute therefor in one revolution and to transfer such impression to a
sheet or piece of material to be printed in the next revolution. In constructing
a machine according to my invention I may arrange the carriage and cylinder
employed in the machine so that in the movements of such carriage in which the
printing of impressions upon the india-rubber covering of the cylinder and the
transfer of impressions to sheets or pieces of material to be printed upon are
accomplished the surface or bed upon which the sheets or pieces of material to
be printed upon may be placed shall pass beneath the cylinder before the stone
or the substitute therefor passes beneath such cylinder or so that the stone or
the substitute for a stone shall pass beneath the cylinder before the surface or
bed on or in which the sheets or pieces of material to be printed may be placed
passes beneath such cylinder and in the former case the impressions printed upon
the india-rubber covering of the cylinder in one movement of the carriage in
one direction will in the next movement of the said carriage in such direction
be transferred to a sheet or piece of the material to be printed upon if there be
one upon or in the surface or bed aforesaid and in the latter case an impression
will be printed upon the india-rubber covering of the cylinder and transferred
to a sheet or piece of material to be printed upon if there be one upon or in the
bed or surface aforesaid in one movement of the carriage in the said direction.
The movements of the carriage and cylinder employed in a machine constructed
according to my invention may be effected by means similar to those employed
to move the carriages and cylinders in lithographic printing machines of ordinary
construction or by any other suitable means. Machines constructed according
to my invention are provided with inking slabs, inking rollers, ink distributing
rollers, damping rollers and damping-distributing rollers, similar and arranged
to operate similarly to those ordinarily employed in lithographic printing
machines or of any other suitable kind and any other devices which it may be
considered desirable to provide in such machines.
Among the materials other than sheet metal which machines constructed
according to my invention may be constructed or arranged to print upon I may
mention by way of instances, card-board, tiles and glass.
Dated this Twenty-ninth day of December 1897
HOWARD
CHEETHAM,
Manchester, Agent to the Applicant.

page_text: Improvements in Lithographic Printing Machines for Printing upon
Sheet Metal and other Materials which are Difficult to Bend, or if
Brought against the Stones or Substitutes therefor used in such
Machines would cause Injury to such Stones or Substitutes
therefor, or to the Printing Surfaces thereon
I, JOSEPH KIRKBRIDE, of Chestnut Villas, Mansfield, in the County of Notting-
ham, Lithographic 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:
-
My invention consists in improvements in lithographic printing machines for
printing upon sheet metal and other materials which are difficult to bend or if
brought against the stones or substitutes therefor used in such machines would
cause injury to such stones or substitutes therefor or to the printing surfaces
thereon and the principal objects of my invention are to enable bending of the
materials to be printed to be avoided and so to avoid distortion of the impressions
or prints produced upon such materials and to obtain a better “register
accurate placing of the impressions or prints upon materials operated upon
and to render such machines more convenient to feed or supply with the materials
to be printed upon and also to render such machines capable of being combined
with arrangements for automatically removing the sheets or pieces of material
printed upon from the positions which they occupy while being printed and
delivering them from the machines.
or more
According to my invention I provide in a lithographic printing machine of the
kind to which my invention relates a cylinder covered with indiarubber and a
carriage arranged to receive a lithographic stone or a substitute therefor and pro-
vided with a damping board or surface and also provided with a surface or bed
upon or in which the materials to be printed upon may be placed and remain while
being printed upon and I so arrange such cylinder and carriage that in each stroke
or movement which the said carriage or bed is caused to make in one direction
the said cylinder shall be caused to revolve twice. I provide a channel, shoot or
guide of any suitable form to enable the materials intended to be printed upon
to be supplied to the surface or bed on or in which they remain while being
printed and I may arrange such channel, shoot or guide to move in order that
the materials to be printed upon may be more readily removed from it and in con-
junction with such surface or bed I arrange a gripper or grippers to hold each
of the sheets or pieces of material successively supplied to such surface or bed
in position while it is being printed upon and a lifting device or devices which
may consist of a lever or finger or rod or levers or fingers or rods or any other
suitable means and is or are arranged to raise each sheet or piece of material
which has been printed upon from the said surface or bed so that it may be readily
removed from the surface or bed by an attendant or so that it may be seized by a
gripper or grippers or other means which may remove it from such surface or bed.
The gripper or grippers employed in a machine constructed according to my inven-.
tion to hold the sheets or pieces of material to be printed in position upon the sur-
face or bed aforesaid while they are being printed and the gripper or grippers or
other means if there be any provided to remove the sheets or pieces of material
printed upon from the said surface or bed may be of any suitable form adapted to
the nature of the material upon which the machine in which it or they is or are
employed is intended to print and such gripper or grippers and the lifting device
or devices aforesaid may be arranged to be moved from time to time in the

page_text: requisite manner by means of any suitable mechanism brought into action by
the movement of the carriage or in any other suitable manner. The cylinder
covered with indiarubber is employed to receive impressions from the stone or
the substitute for a stone employed in the machine and to transfer such impres-
sions to the sheets or pieces of material to be printed upon and in order that it
may receive impressions from the stone or the substitute therefor and transfer
them to the sheets or pieces of material to be printed the said cylinder is made
to revolve twice in each movement of the carriage in one direction as has been
herein before mentioned being made to receive an impression from the stone or
the substitute therefor in one revolution and to transfer such impression to a
sheet or piece of material to be printed in the next revolution. In constructing
a machine according to my invention I may arrange the carriage and cylinder
employed in the machine so that in the movements of such carriage in which the
printing of impressions upon the indiarubber covering of the cylinder and the
transfer of impressions to sheets or pieces of material to be printed upon are
accomplished, the surface or bed upon which the sheets or pieces of material to
be printed upon may be placed. shall pass beneath the cylinder before the stone
or the substitute therefor passes beneath such cylinder or so that the stone or
the substitute for a stone shall pass beneath the cylinder before the surface or
bed on or in which the sheets or pieces of material to be printed may be placed
passes beneath such cylinder and in the former case the impressions printed upon
the india-rubber covering of the cylinder in one movement of the carriage in
one direction will in the next movement of the said carriage in such direction
be transferred to a sheet or piece of the material to be printed upon if there be
one upon or in the surface or bed aforesaid and in the latter case an impression
will be printed upon the india-rubber covering of the cylinder and transferred
to a sheet or piece of material to be printed upon if there be one upon or in the
bed or surface aforesaid in one movement of the carriage in the said direction.
The movements of the carriage and cylinder employed in a machine constructed
according to my invention may be effected by means similar to those employed
to move the carriages and cylinders in lithographic printing machines of ordinary
construction or by any other suitable means. Machines constructed according
to my invention are provided with inking slabs, inking rollers, ink distributing
rollers, damping rollers and damping-distributing rollers, similar and arranged
to operate similarly to those ordinarily employed in lithographic printing mach-
ines or of any other suitable kind and any other devices which it may be con-
sidered desirable to provide in such machines.
Among the materials other than sheet metal which machines constructed
according to my invention may be constructed or arranged to print upon I may
mention by way of instances, card-board, tiles, and glass.
In the accompanying drawings, Fig. 1 is a side clevation of so much of a
lithographic printing machine as is requisite for the illustration of my inven-
tion and the manner of carrying it into effect, and Figs. 2, 3 and 4 are side
elevations of parts of the lithographic printing machine drawn upon a larger
scale than Fig. 1, Figs. 3 and 4 serving to illustrate certain parts in positions
other than those in which they are indicated in Fig. 1. The same letters of
reference are employed to indicate corresponding parts in all the said figures.
Only one side of the machine is illustrated in the accompanying drawings but it
is obvious that at each side of the machine there are some parts corresponding
to parts at the other side of such machine. The machine illustrated by the
accompanying drawings is to a great extent similar to an ordinary two-colour
letter-press cylinder printing machine, but adapted to the purposes of my inven-
tion by being provided with a stone or a substitute for a stone and a printing
bed and other parts and therefore I will first briefly refer to the principal parts
which are similar to those employed in an ordinary two colour letterpress print-
ing machine.
In the machine illustrated in the accompanying drawings (a) is the carriage.

page_text: The carriage (a) is like the carriages of ordinary two-colour letter-press printing
machines moved in the direction indicated by the arrow A and in the direction
opposite to that indicated by the arrow A by means of a connecting rod (e)
receiving motion from a crank on a shaft (f) receiving motion from the main
driving shaft of the machine. The main driving shaft imparting motion to the
shaft (f) and the said crank are omitted from the accompanying drawings. The
connecting rod (e) is connected to a toothed-wheel (g) which resting upon and
gearing into a fixed rack (h) carried by the framework of the machine gears into
a rack (2) upon the lower side of the carriage (a). The carriage (a) is supported
by means of rollers () which rest upon rails (k) secured to the side-frames (m)
of the machine and are connected together by means of side-rods (¹) and a cross-
bar (n) extending between and secured to such side-rods (¹) is embraced by
links (o) which embrace the stud or axle (g) on which the toothed-wheel (g) is
mounted so that the rollers (5) move in correspondence with the toothed-wheel (g).
The carriage (a) is made to impart motion to the cylinder (?) of the machine by
means of racks with which it is provided which are made to gear into toothed-
wheels mounted upon the shaft or axle (') of the cylinder (p) and arranged to
communicate motion to such cylinder (2) in the ordinary or any other suitable
manner so that such cylinder (p) shall be revolved only when the carriage (a)
is being moved in the direction indicated by the arrow A. The toothed-wheels
upon the shaft or axle (p) and the other means used therewith are omitted from
the accompanying drawings. The toothed-wheel upon the shaft or axle (p¹) of
the cylinder () and the racks and other means used therewith are so propor-
tioned and arranged that in each movement of the carriage (a) in the direction
indicated by the arrow A the cylinder (p) shall be caused to revolve twice in the
direction indicated by the arrow B. At each end the axle or shaft (p') of the
cylinder () is mounted in bearings formed in blocks (4) capable of being raised
and lowered in guides formed in pedestals (r) upon the side-frames of the
machine. From each block (y) is suspended a rod (r) provided with a slot to
embrace a lever (s) which arranged to rest upon an angular edge formed on
the rod () embracing it at the lower part of the slot therein. Each lever (s) is
mounted upon a stud (s) secured in one of the side-frames (m) and is provided
with a weight (2) pressing such lever (s) downwards.
Having thus generally described the arrangement of the machine illustrated
by the accompanying drawings in so far as it resembles an ordinary two-colour
letter-press printing machine I will now proceed to describe the arrangements
employed in such machine according to my invention. The carriage a is pro-
vided with a lithographic stone (b) and with a damping board or surface (c).
The carriage (a) which is omitted altogether from Figs. 3 and 4 in order that such
figures may be as simple as possible is provided with means by which the
stone (b) may be adjusted in position as in ordinary lithographic printing
machines. In conjunction with the cylinder (p) there is arranged a brake like that
ordinarily used in lithographic printing machines and arranged so that such
cylinder (p) may be made to receive and print impressions in the proper posi-
tions or register and brought to rest at the end of every two revolutions
which it is caused to make in the direction indicated by the arrow B. The ink
cylinder (t), inking slab (¹), ink-distributing rollers (u), inking rollers (v) and
other devices provided in connection with the supply of ink, colour or other
material to be used in printing to the stone, and the damping-distributing
rollers (c) are substantially similar in arrangement and use to those ordinarily
provided in lithographic printing machines and so need no description.
"
The cylinder (p) is covered with indiarubber in order that it may receive
impressions from the stone (6) and transfer them to the sheets of tin or other
materials to be printed and the carriage (a) is provided with a printing bed or
surface (y) on which the said sheets may rest while being printed. The levers (s)
press the cylinder (p) downwards by means of the rods (r) so that it may be made
to bear in the manner requisite upon the stone (b) and upon the sheets of material

page_text: to be printed. The said bed or surface (y) is arranged to be adjusted in position
by means similar to those employed in conjunction with the printing beds of
ordinary lithographic printing machines for printing on paper so that such
printing bed (y) may be adjusted in position in order that materials of different
thicknesses may be printed as may from time to time be requisite. At the end
of the printing bed or surface (y) which is foremost when the carriage (a) is
moved in the direction indicated by the arrow A is mounted a shaft (2) extend-
ing across the printing bed or surface (y) and capable of being oscillated in
bearings in brackets formed or secured thereon. On the shaft (2) and mounted
preferably so as to be adjustable lengthwise thereof and capable of being secured
in different positions thereon are two or more gripper-fingers (3) formed with
upper jaws (3) preferably formed of steel plates secured to the said gripper-
fingers (3) which may as is clearly indicated in Fig. 3 act in conjunction with
a metal bar (2) upon the printing bed or surface (y) and hold the sheets of tin
or other material to be printed in position on the printing bed or surface (y)
and with lower jaws (3b) which can enter notches formed in the bar (z) and on
the gripper-fingers (3) being raised as is indicated in Fig. 4 may bear against
the lower surface of a sheet of tin or other material placed on the printing sur-
face or bed (y) and projecting over the bar (2) and raise such sheet of tin or
other material. Fast upon the shaft (2) which is arranged to pass through a
hole formed in the side of the carriage (a) is mounted an arm (4) carrying a
stud on which is mounted a bowl (5) which in the movement of the carriage (a)
will be brought into contact with and moved by two cams (6) (7). The cam (7)
is fixed upon one of the side-frames (m). The cam (6) is secured upon a bar (8)
capable of being slidden upwards and downwards in guides provided upon one
of the side-frames (m) and is raised and lowered by means of an arm (9) upon
a shaft (10) extending across the machine and capable of being oscillated in
bearings in the side-frames (m) by means of a connecting rod (11) connected at
one end to an arm (12) fast on the said shaft (10) and at the other end to a
lever (13) oscillated by means of a cam on the shaft (f). The cam (6) serves to
raise the gripper-fingers (3) so that the sheets of tin or other material to be
printed may be inserted beneath them and the cam (7) serves to raise the said
gripper fingers (3) so that the lower jaws (3b) of the gripper-fingers (3) shall
raise the sheets of material which have been passed beneath the cylinder (p)
by means of the bed or surface (y). On the side-frames (m) of the machine of
which only one is indicated in the drawings are provided standards (14) of which
also one only is shown. In the standards (14) is mounted an axle or cross
bar (15) to which is secured a board or series of inclined bars which forms or
form a channel, shoot or guide (16) upon and from which the sheets of tin or
other material to be printed may be transferred by the attendant from the pile
of sheets laid in readiness on the table (17) and be made to pass as will be here-
inafter explained to the printing bed or surface (y). The channel, shoot or
guide (16) is supported at its higher part by the axle or cross bar (15) and at its
lower part is made to rest upon a bar (18) extending across the machine and rest-
ing sometimes in notches formed in the standards (14) and sometimes upon and
raised and lowered by means of the bar (8) and at the other end to a bar similar
and moved by the shaft (10) similarly to the bar (8) but at the other side of
the machine and having no cam corresponding to the cam (6). The cam pro-
vided to move the lever (13) is as is clearly indicated in Fig. 1 so formed and
arranged that as the carriage (a) is moved in the direction indicated by the
arrow A and in the opposite direction the cam (6) and bar (18) shall be raised
or lowered and that the raising of such cam (6) and bar (18) shall take place
as the carriage (a) approaches the end of its movement in the direction oppo-
site to that indicated by the arrow A so that when the roller (5) being brought
against the cam (6) raises the gripper-fingers (3) from the metal bar (2) the
cam (6) and bar (18) shall be raised so that the surface of the channel guide
or shoot (16) shall be in line with a plate (19) extending across the machine

page_text: <
+3
and secured at its ends to the standards (r) in which the bearing blocks (q)
carrying the cylinder (p) are mounted and serving to ensure that the sheets of
tin or other material to be printed shall be placed in proper position or register'
upon the printing bed or surface (y). The cam provided to move the lever (13)
is also so formed and arranged that just before the carriage (a) begins to be
moved in the direction indicated by the arrow A from the position in which
it is indicated in Figs. 1 and 2 the bar (8) and cam (6) shall be lowered so that
the lower edge of a sheet of tin or other material laid upon the channel, shoot
or guide (16) and against the plate (19) shall be laid upon the bar (2) of the
printing bed or surface (y) and the shaft (2) shall be allowed to turn so that the
gripper-fingers (3) shall be allowed to act in conjunction with the bar (2) and
secure the said lower edge of the sheet of tin or other material and draw it from
the channel, shoot or guide (16) and underneath the cylinder (p) as the car-
riage (a) is moved in the direction indicated by the arrow A. The cam (7) is
placed in such position that when the carriage (a) in its movement in the direc
tion indicated by the arrow A has carried the printing bed or surface (y) beneath
the cylinder (p) the gripper-fingers (3) shall be raised so as to release and raise
any sheet of tin or other material which may be upon the printing bed or sur-
face and projecting over the bar (2) so that inclined lifting fingers (20) of which
there may be two or more secured in the position indicated in Figs. 1 and 4 upon
a rod (21) fastened in brackets (22) provided upon the side-frames (m) and
arranged for the gripper-fingers (3) to pass between or at the side of them may
receive the edge of the said sheet of tin or other material so that in the latter
part of the movement of the carriage (a) in the direction indicated by the arrow A
the said sheet of tin or other material shall be caused to slide up the fingers (20)
being pushed by a projecting-rib (23) provided at the rear of the printing bed
or surface (y) for the purpose of pushing the sheet of tin or other material on
the printing bed or surface (y) forward when it has been released by the gripper
fingers (3). Near the upper ends of the fingers (20) is arranged a lattice or
band (24) caused to revolve in the direction indicated by the arrow C around
rollers (25) (26) supported by the side-frames (m) and caused to revolve by bands
as shown or other suitable means. The cylinder (7) is like the cylinders gener-
ally used in lithographic printing machines provided with an opening which
serves to allow the grippers (3) and projecting rib (23) to pass beneath such
cylinder (p) without injuring it or being injured thereby. The lattice
band (24) receives the sheets of tin or other material pushed up the fingers (20).
In the use of the machine illustrated by the accompanying drawings if it be
assumed that the carriage (a) has been moved in the direction opposite to that
indicated by the arrow A into the position in which it is indicated in Figs. 1
and 2 so that the stone (b) has been damped and inked a sheet of tin or other
material is placed on the channel, shoot or guide (16) and in the next movement
of the carriage (a) in the direction indicated by the arrow A is carried there-
from beneath the cylinder (7) and delivered on to the lattice or band (24) un-
printed although pressed upon by the cylinder (p) such cylinder (p) having as
yet received no impression from the stone (b) and the stone (b) is made to impart
an impression to the cylinder (p). Then during the succeeding movement of
the carriage (a) in the direction opposite to that indicated by the arrow A the
cylinder (p) remains stationary, the stone (b) is again damped and inked and a
sheet of tin or other material to be printed having been laid upon the channel,
shoot or
guide (16) is in the next movement of the carriage (a) in the direction
indicated by the arrow A carried beneath the cylinder (p) and printed and
delivered to the lattice, or band (24) and the cylinder (2) receives a fresh impres-
sion from the stone (b). Thus, after the first to and fro motion of the carriage (a)
there is in each movement of the carriage (a) in the direction indicated by the
arrow A one impression transferred from the cylinder () to a sheet of tin or
other material and one fresh impression prepared upon the said cylinder for
transfer to a sheet of tin or other material in the next movement of the carriage
in the direction indicated by the arrow A.
or

page_text: Instead of two or more gripper-fingers like the gripper-fingers (3) there may
be arranged a gripper extending across the whole or the greater part of the
width of the printing bed (y). Although the fingers (20) are illustrated as
mounted upon a fixed bar (21) it is obvious that if in any case it should be pre-
ferable they may be mounted upon a shaft caused to oscillate so as to facilitate
the delivery from the printing bed (y) of sheets of metal or other materials
which are too short to be pushed up stationary fingers on to the lattice or
band (24). It is also obvious that projecting pins upon the printing bed or
surface (y) may be used instead of the bar (23) and that in any case in which
the materials to be printed are sufficiently heavy to be made to pass up the
fingers (20) by their own momentum when printed the provision of means upon
the printing bed (y) to push them up the said fingers (20) may be dispensed
with.
In any cases in which it may be desirable to provide them there may be pro-
vided in the printing bed or surface (y) studs pressed upwards by means of
springs so as to serve to push forward and up the fingers (20) sheets or pieces of
metal or other material operated upon which are shorter than can be acted upon
by the rib (23) and also so as to be capable of yielding to the pressure of the
cylinder (2) so as not to injure it.
The construction and use according to my invention of a machine in which
the stone or equivalent therefor is passed beneath the cylinder before the print-
ing bed or surface in the movements of the carriage in which printing takes
place will be readily understood from the accompanying drawings and the pre-
ceding description but I prefer the form in which as in the machine illustrated
by the accompanying drawings the printing bed or surface passes beneath the
cylinder before the stone in the movement of the carriage in which printing takes
place as in such form of machine the supply of sheets of tin or other material to
the printing bed or surface and the removal of the printed sheets from the said
printing bed or surface can be more easily accomplished. The lattice or band (24)
may be made of any length which may be desirable and by being made of con-
siderable length and if desirable made to deliver the printed sheets of metal or
other material to another lattice or band, may be made of great advantage in
enabling the ink or colour printed upon the sheets of metal or other materials
operated upon to be allowed to dry so that one sheet or piece printed upon may
be laid one upon another without danger of injury instead of requiring to be
removed singly from the place at which they are delivered from the machine as
in the machines hitherto constructed.
6
In the lithographic printing machines constructed to print upon sheet metal
prior to my present invention two cylinders have been used in each machine
one to carry the sheets of metal or other material to be printed and the other
to receive impressions from the stone or the equivalent therefor to the sheets of
metal or other material to be printed and in such machines the material to be
printed has been bent around the cylinders on which it is carried while being
printed and in consequence of the bending of the material it has been impossible
to secure great accuracy in the position or register" of the impressions on the
sheets of material printed and it has also been requisite although inconvenient
to supply the said machines with the sheets of metal or other material at a part
considerably above the carriages or beds in consequence of the cylinders to carry
the sheets of metal or other material to be printed being necessarily placed more
or less above the cylinder used to transfer impressions to such sheets of metal or
other material. In the machines arranged according to my invention the
materials to be printed upon are not bent and so it is easy to obtain an accurate
register"
or placing of the impressions or prints upon the materials operated
upon and as is obvious from the accompanying drawings the materials to printed
upon can be easily and conveniently fed" or supplied to the machines and
arrangements for automatically removing the sheets or pieces of material printed

page_text: upon from the positions which they occupy while being printed can be readily
combined with such machines.
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 [
claim is:-
1. In a lithographic printing machine for printing upon sheet metal or other
materials which are difficult to bend or if brought against the stone or substitute
therefor used in such machine would cause injury to such stone or substitute
therefor the combination of a cylinder covered with indiarubber and arranged to
revolve twice in each movement of the carriage in which printing takes place,
a carriage provided with a stone and a bed or surface upon or in which the
materials to be printed may be placed and remain while being printed upon all
arranged, employed and operating for the purposes and substantially in the
manner herein before described.
2. In a lithographic printing machine for printing upon sheet metal or other
materials which are difficult to bend or if brought against the stone or substitute
therefor used in such machine would cause injury to such stone or substitute
therefor, the combination with a cylinder covered with indiarubber and arranged
to revolve twice in each movement of the carriage in which printing takes place
and a carriage provided with a stone or substitute therefor and a printing bed
or surface upon or in which the materials to be printed may be placed and
remain while being printed of a gripper or grippers provided in conjunction with
such bed or surface and provided with a jaw or jaws to hold the said materials
on the printing bed or surface and a jaw or jaws to raise such materials from the
said printing bed or surface all arranged, employed and operating for the pur-
poses and substantially in the manner herein before described.
Dated this Twenty-ninth day of October 1898.
HOWARD
CHEETHAM,
Manchester, Agent to the Applicant.