Improvements in Two-feeder Single Cylinder Letter-press Printing Machines.
Year: 1886

page_text: -Date of Application, 3rd July, 1886.
Complete Left, 2nd Apr., 1887.
Complete Accepted, 24th May, 1887.
PROVISIONAL SPECIFICATION.
Improvements in Two-feeder Single Cylinder Letter-press
Printing Machines.
I, GEORGE NEWSUм, of No. 5 Fairfax Road, Beeston, Leeds, in the County of York;
Printers Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to certain improvements in two-feeder single cylinder
letter-press printing machines, and has for its object the combination of a stop cylinder
and grippers with feeding and delivering apparatus, in such a manner that two formes
can be used and each print on separato sheets with one revolution of the impression
cylinder, so that if desired, two formes may be printed as in a perfecting machine
without any alterations in making ready or placing of formes.
I accomplish my object in the following manner :-The cylinder is made sufficiently
large in diameter to receive two sheets of paper, is also arranged to stop at intervals,
and provided with two separate sets of grippers and taking off cylinders which are
operated in the ordinary manner.
The sheets are fed to the impression cylinder at different points from two feeding
tables placed in suitable positions, when both sheets are printed on one side by the
respective formes on the reciprocating table with one revolution of the cylinder, the
taking off cylinders removing the sheets and delivering them where required.
When it is desired to print both sides of the sheets, they are divided, one half being
fed from each table, which when completed are removed from the delivery boards,
reversed, and placed on the opposite feed boards, so that when fed to the cylinder a
second time they are "perfected "by being printed on both sides. The type formes
are placed on the reciprocating table as in perfecting machines of the ordinary con-
struction and the "register" is perfect without any alterations in making ready or to
the feed gauges.

page_text: I, GEORGE NEWSUM, of No. 5 Fairfax Road, Beeston Hill, Leeds, in the County of
York, Printers 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 relates to certain improvements in two feeder single cylinder letter
press printing machines, and has for its object, the combination of a stop cylinder and
grippers with feeding and delivering apparatus in such a manner that, two separate
sheets can be printed with one revolution of the impression cylinder.
I accomplish my object in the following manner, the cylinder is made sufficiently
large in diameter to receive two sheets of paper, is also arranged to stop at intervals,
and provided with two separate sets of grippers and taking off cylinders which are
operated in the ordinary manner. The sheets are fed to the impression cylinder at
different points from two feeding tables placed in suitable positions, by which both
sheets are printed on one side by the respective forms on the reciprocating table with
one revolution of the cylinder; the taking off cylinders removing the sheets and
delivering them where required.
In order that my invention may be better understood, I will further describe the same
by making reference to the accompanying sheets of drawings, in which Fig. 1 represents
a side elevation of a two feeder single cylinder letter press printing machine as arranged
according to my invention with one of the side frames removed. Fig. 2 is a plan of
the machine. Fig. 3 an end view of the cylinder driving wheels with a portion cut
away to shew the driving catches. Fig. 4 a view shewing the moveable catch attached
to the wheel, and raised to the position when the cylinder is stationary, and Fig. 5 a
view of the break pulley and strap. In all the figures similar letters indicate similar
parts where they appear.
The impression cylinder is indicated by the letter C, is mounted on the frames A in
the usual manner, and prepared with two impression surfaces and two longitudinal
openings through the same diametrically opposite each other; in which are fitted
ordinary grippers similar in construction to those generally used by letter press
printing machines, for the purpose of holding the paper to the cylinder during the
operation of printing, and releasing the same when printed.
The type formes T, and T¹, are secured to the table G, and the inking of the former
accomplished by any of the well known methods. On commencing to print, the

page_text: ordinary fed gauges are set to suit the paper and type, and the sheets fed alternately
to the impression cylinder C, first from the bottom feed board N, and then from the
upper O; the sheets from the bottom feed board N after receiving the impression
from the type T, are removed on the release of the impression cylinder grippers by
the delivery apparatus D¹, described in my specification No. 632, A.D. 1879, and
deposited on the receiving board N¹; the other sheets taking the impression from the
type T¹, are removed on the release of the respective cylinder grippers, by grippers
similar to those before mentioned which are attached to the small revolving cylinder Q,
and conveyed by tapes T2, to the common distributing flyer R, operated in the ordinary
manner by a reciprocating toothed rack gearing with the pinion P, secured on the
flyer shaft R.
When both sheets have been printed, the table G will have travelled to its limit, and
during the return stroke, the impression cylinder C remains stationary; the catches K¹
yielding, pass over the curved stops J' in the manner hereinafter described, the break
strap M gripping the pulley M sufficiently to keep the cylinder C firm until the
commencement of the return stroke, when the strap M¹ will be clear of the pulley M,
as soon as the raised portion M' is free of the small pulley V, mounted on the arm Y
of the break strap.
I form two raised portions M³, and M³, on the circumference of the break pulley M,
one of which is the means of holding the cylinder C firm during the return of the
table G, and in addition, by M2 and M³ operating the break strap M¹, friction is put
upon the pulley immediately before the impression is taken, by which means, any back
lash there may be in the teeth of the racks and wheels K is removed, thereby bringing
the teeth faceable, and insuring the printing on all the sheets to be of the same register
When it is desired to print both sides of the sheets they are divided, one half being
fed from each table, which when completed are removed from the delivery boards,
reversed and placed on the opposite feed boards, so that when fed to the cylinder a
second time, they are "perfected". by being printed on both sides. The type formes are
placed on the reciprocating table as in perfecting machines of the ordinary construction,
and the "register is perfect without any alterations in making ready, or to the
feed gauges.
"
In order to drive the impression cylinder C in one direction only without the inter-
vention of cams, I secure to each end of the impression cylinder C, a curved stop J¹, one
end of which is slightly hollow, the other being curved and pointed; and to each spur
wheel K, K, free on the cylinder shaft and gearing with racks on the table as in
ordinary machines, I secure a stud, and mount thereon a catch K³, held by the spring S
in the necessary position against the hollow end of the curved stop J¹ whilst driving
the impression cylinder in the direction of the curved arrows for printing, and on the
reversal in the motion of the table G, the spring S allows the catch K to yield on
coming in contact with the curved and pointed end, thereby leaving the cylinder
stationary until the table moves in the forward direction for printing, as indicated by
the straight arrow.
When it is required that the impression cylinder C should remain stationary, and
the table G to reciprocate, I move the handle L into a notch formed in the side frame
of machine to the position as shewn by Fig. 4, the handle being connected to the
shaft L' which extends across the machine, and to which are attached two curved
arms L, which raise the catches K¹ clear of the fixed curved stops J¹, by reason of
the small pullies P₁ coming in contact therewith; thus allowing the table G, and
wheels K. K. to move backwards and forwards, and the impression cylinder to remain
stationary, which is kept rigid by a lever L³, secured on the same shaft entering a
recess as shewn by Fig. 5 formed in the flange of the break pulley M secured on the
cylinder shaft.
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 :—
1st. In a printing machine in which the impression cylinder C is provided with
grippers to receive two sheets of paper, combined with two feeding boards N, and O,

page_text: and two delivery apparatus all arranged substantially in the manner and for the
purpose hereinbefore described.
2nd. In a printing machine in which curved stops J¹ are secured to the ends of the
impression cylinder C, and combined with the catches K¹ in connection with an im-
pression cylinder provided with two sets of grippers and two feeding boards substantially
in the manner and for the purpose set forth.
3rd. In a printing machine in which are combined the levers Land L' with the
catches K, and the lever L³ with the break pulley M in connection with an impression
cylinder provided with two sets of grippers and two feeding boards substantially in
the manner and for the purpose described.