IMPROVEMENTS IN LITHOGRAPHIC AND LETTER-PRESS PRINTING MACHINERY
Year: 1884

page_text: I HENRY TUKE of the firm of Pullan Tuke and Company of Elland Road Leeds
in the County of York Engineers do hereby declare the nature of my Invention
for IMPROVEMENTS IN LITHOGRAPHIC AND LETTER-PRESS PRINTING MACHINERY
to be as follows:-
The object of my Invention is to construct a machine for printing upon paper
tin and other pliable material much more quickly and more perfectly than by
other machines now in use.
The framework of the machine may be of a similar type to ordinary printing
machines and my improvements consist in providing thereon two cylinders of
different diameters the proportions varying in accordance with the proposed class
of work the machine is to be employed for. The smaller cylinder by a convenient
arrangement of gearing is caused to make one revolution whilst the other is
making only part of a revolution and is then stopped for the purpose of being fed
whilst the other larger cylinder is completing its revolution. By this mode of
working the two cylinders make exactly the same number of revolutions when
printing. I further provide friction pullies and lever motion whereby the two
cylinders can be thrown out of gear with each other so that the larger cylinder can
be revolved when required without affecting the smaller cylinder.
The smaller cylinder is of a similar construction to those now in use but the
larger cylinder is constructed so as to receive zinc sheets or other suitable material
upon which the work is transferred as upon stone and in this machine is employed
instead of stone. By an arrangement of set screws and adjustable bracket the tin
or other sheet can be readily adjusted to suit "registering" and afterwards firmly
held in such position.
The large cylinder is supplied with ink in a similar manner to ordinary printing
machines, the inking damping and distributing rollers being mounted in suitable
positions round the cylinder. The printing takes place between the two cylinders.
The zinc sheets to give the impression are mounted on the large cylinder, and the
paper or other material to receive the impression on the smaller cylinder.
Although we have said that the framework may be of ordinary construction we
preferably cast the cylinder brackets frame sides and transverse frames in one
piece ensuring thereby greater firmness and solidity rendering it impossible for the
quick action of the machine to shake any of these parts loose from each other as is
the case with ordinary machines having these parts bolted or screwed together.
Dated this Third day of January 1884.

page_text: I HENRY TUKE of the firm of Pullan Tuke and Company of Elland Road Leeds
in the County of York Engineers do hereby declare the nature of my said
Invention for IMPROVEMENTS IN LITHOGRAPHIC AND LETTER PRESS PRINTING
MACHINERY and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement reference being had to
the accompanying Drawings and to the letters and marks thereon.
The object of my Invention is to construct a machine for printing upon paper
tin and other pliable material much more quickly and more perfectly than can be
done by other machines now in use.
The framework of the machine may be of a similar type to ordinary printing
machines and my improvements consist in providing thereon two cylinders of
ditlerent diameters, the proportions varying in accordance with the purpose or
class of work the machine is to be employed for.
The smaller cylinder by a convenient arrangement of gearing is caused to make
one revolution whilst the other is making only part of one and is then stopped for
the purpose
of being fed, whilst the other larger cylinder is completing its
revolution. By this mode of working the two cylinders make exactly the same
number of revolutions when printing. I further provide friction pullies and lever
motion, whereby the two cylinders can be thrown out of gear with each other, so
that the larger cylinder can be revolved when required without affecting the
smaller one.
The smaller cylinder is of a similar construction to those now in use, but the
larger cylinder is constructed so as to receive zinc sheets or of other suitable
material, upon which the work is transferred as upon stone, and in this machine is
employed instead of stone. By an arrangement of set screws and adjustable
brackets, the zinc or other sheets are readily adjusted to suit registering and
afterwards firmly held in such position.
The large cylinder is supplied with ink in a similar manner to ordinary printing
machines; the inking damping and distributing rollers being mounted in suitable
positions round the cylinder.
Although I have said that the framework may be of ordinary construction
I preferably cast the cylinder brackets, frame sides, and transverse frames in one
piece, ensuring thereby greater firmness and solidity, rendering it impossible for
the quick action of the machine to shake any of these parts loose from each other,
as is the case with ordinary machines.
And in order that my Invention may be more completely understood reference
is given to the accompanying Drawings and to the letters and marks thereon.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a front elevation Fig. 2 is a back elevation Fig. 3 a part sectional
plan and Fig. 4 a transverse section of the cylinders.
a is the framework of the machine and may be of a similar type to that used in

page_text: For this purpose I provide a spur wheel d mounted on the smaller cylinder
shaft e such spur wheel having several teeth omitted on part of its circumference.
This wheel dis in gear with another spur wheel f on the larger cylinder shaft g
and whilst the larger spur wheel f is revolving it also causes the spur wheel & to
revolve until such smaller spur wheel d has been rotated as far as the space on its
circumference, wherefrom the teeth have been omitted at which point the large
spur wheel ceases to move it.
In order to bring the smaller cylinder c into operation again it is necessary to
move its spur wheel d round a short distance so as to bring its teeth into gear with
those of the large spur wheel f; and for this purpose I provide a pushing rod h to
which a reciprocating movement is imparted by the cam i or eccentric provided on
the end of the larger cylinder shaft g. The reciprocating movement of the pushing
rod his constant whilst the larger cylinder bis revolving; but as the smaller
cylinder c requires moving thereby only intermittently I provide a hinged piece k
on the pushing rod which when in the position shewn in Fig. 1 transmits the
pushing movement to a cam on the outer end of the smaller cylinder shaft e
which causes the spur wheel d with its cylinder c to rotate until the teeth of such
spur wheel & are brought in contact with those of the larger spur wheel
motion being continued until the small spur wheel d has been moved round to the
space from which the teeth are omitted. When for the purpose of distributing ink
the movement of the smaller cylinder c, is not required, the hinged piece k is moved
away by the hand lever m so that the piece k will not come in contact with the
cam on the outer end of the smaller cylinder shaft e whilst allowing the
reciprocating movement of the pushing rod h to continue.
this
In order to cause the smaller cylinder c to stop exactly at the required point I
employ the friction disc and into it is fitted a friction segment o attached to a
vertical sliding piece p. This being pressed against the friction disc n prevents the
cylinder c moving too far after its spur wheel & has been moved round to the
space where the teeth are omitted. In order more completely to arrest the motion
I bring the check lever q in contact with the projecting piece on the friction
disc n; the movement of the check lever is produced at the proper time by a
cams on the larger cylinder shaft g.
The smaller cylinder c is of a similar construction, to those now in use but the
larger cylinder bis constructed so as receive a sheet t of zinc or other suitable
material upon which the work is transferred as upon stone and in this machine is
employed instead thereof. The sheets are adjusted and retained in position on
the cylinder b by the regulating screws attached to the lugs v in its interior.
It must be clearly understood that although I have stated that this cylinder bis
constructed to receive zinc sheets or other suitable material 1 would also have it
understood that ordinary lithographic stone and also type may be applied thereto,
the cylinder b being recessed to receive the same.
The larger cylinder is fed with ink by the rollers x as in ordinary printing
machines, and when desired the inking and also daping rollers may be applied
round the circumference thereof, as shewn in the accompanying Drawings.
Although I have said that the framework of the machine may be of ordinary
construction I preferably cast the cylinder brackets, frame sides, and transverse
frames, in one piece, ensuring thereby greater firmness and solidity and rendering
it impossible for the quick action of the machine to shake any of the parts loose
from each other as is the case with ordinary machines.
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 two cylinders b and c of different diameters arranged and operating
substantially as and for purposes herein set forth.
2° The application of zinc or other pliable sheets to cylinders of printing
machines substantially as and for purposes herein set forth.

page_text: 3. The general arrangement and combinations of the various parts forming my
improved lithographic and letter press printing machinery substantially as herein,
described and shewn in the accompanying Drawings.
Dated this Twenty third day of September 1884.