Improvements in Platen Printing Presses.
Year: 1898

page_text: Date of Application, 9th June, 1898
Complete Specification Left, 10th Aor., 1899-Accepted, 13th May,
1899
Improvements in Platen Printing Presses.
We, FRED WAITE, of 32, Mount Pisgah, Otley, in the County of York, Printer's
Engineer, and WAITE & SAVILLI, LIMITED, of Falcon Works, Otley, aforesaid,
Printer's Engineers, do hereby declare the nature of this invention to be as
follows.
This invention relates to improvements in platen printing presses, and its
object is to provide a press of simple construction which can be readily driven
without danger to the person feeding
То cary out our invention we employ a feed table consisting of a thin polished
plate to the inner edge of which a 118ing and falling movement is given for the
puu pose of lowering the paper clear of the fred guide or guides and enable it to
be withdiawn by a grippei or grippers on the platen The feed table may be
lowered bodily instead of merely the inner edge The feed guide or guides is 01
are adjustably mounted above and are arranged to permit of the front edge of the
paper located thereby projecting a little in front of the feed table This feed
table is preferably hinged or made detachable so that it can be moved clear off the
platen to facilitate making ready
The platen swings on a rocking shaft from a more or less houizontal position
beneath the feed table to almost a vertical position in front of an oscillating
type bed or form carrier which may be of ordinary design and be oscillated by
cianks and aims in the usual manner The rocking shaft carving the platen 19
a considerable distance away from the face of the platen so that it moves bodily
over through the are of a circle of sufficient radius and length to permit of the
front edge of the platen whereby the paper is fist held travelling far enough
to cauy the paper away clear of the feed table to a position to receive the
impression Furthermore the rocking shaft is preferably not in a plane at right
angles to the centre of the platen but is in a parallel plane considerable nearer the
rear edge, and a rest is provided upon and against which the lower edge of the
platen beans when it receives the impression
This construction besides facilitating
passing the platen conveniently beneath the feed table tends in conjunction with
said iest to give gidity to the platen whilst receiving the impression
The gripper or grippers on the platen may be pivoted on or close to the sides
and each have a projection to extend over more or less at night angles and engage
the front margin of the paper, but for no obstruction when raised to the with-
diawal of the paper, or one gripper of this form may extend completely across
the margin The gripper or grippers may be opened and closed by a tappet
engaging an arm thereon This tappet is pivoted upon and moves with the
platen frame and it is provided with an arm which plays between and alternately
engages two projections upon a lever A slight movement 19 given to this leve
in alternate directions to actuate the tappet through the medium of the projections
thereon Two or more tappets arranged in this way may be employed to open and
close the grippers. Instead of making the grippers of the form described above
they may be pivoted sufficiently in front of and away from the face of the platen

page_text: 66
to leave 100m for the paper to be withdrawn Adjustable pendant 'frisket "
fingers pivoted between the frames or to other suitable parts and operated in any
convenient way are provided to bear upon the margins of the paper or the like
and keep it in position whilst it receives the impression and until the type 18
sufficiently withdrawn
The paper is removed from the platen by one or more delivery grippers which
pass into a notch or notches in the front edge of the platen to enable them
to engage the edge of the paper And the front make ready clamp is also notched
or placed sufficiently below the face of the platen to admit of this
The oscillating motion of the type bed may be utilized to actuate the platen by
means of a 1od or rods coupling it to an aim or arms on a rocking shaft and an
arm on this locking shaft is coupled to an aim on the platen 1ocking shaft The
said aims and connecting rods are so relatively arranged that the platen 18 slowly
started and brought to rest and a suitable connection is introduced preferably
backed up by a sping to enable the platen to be brought to rest before the
Oscillation of the type bed towards it is complete and to allow it to remain at rest
until the type has receded a sufficient distance from the sheet of paper
"
The fisket" fingers may also be operated by the oscillation of the type bed
Dated the 8th day of June 1808
We, FRFD WAITE, of The Lindens, Burias Lanc, Otley in the County of York,
Pinters Engineer, and late of 32, Mount Pisgah, Otley, aforesaid, and WAITE &
SAVILLE, LIMITED, of Falcon Works, Otley, aforesaid, Pinter's Engineers, 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 improvements in platen printing presses, and its
object is to provide a press of simple construction which can be quickly driven
without danger to the person feeding
In the accompanying sheets of diawings Figure 1, 18 a front elevation of our
improved press Figures 2 and 3, are elevations of the two sides Figure 4, 18
sectional view on the broken line a, b Figure 1, and Figure 5, is a plan
View of the platen
The feed table A consists of a thin polished plate with its inner edge A³ bevelled
off on the under side to reduce it to practically a knife edge This table is mounted
upon the arms A3, A3 fixed to the rocking shaft A mounted in bearings A³ formed
in the side frames B and B The fiont feed guide or gauge A is fixed a little way
in front of the edge A3 of the table so that the paper projects a little beyond such
edge After the position of the paper has been located by the gauge the muer
edge of the table is lowered sufficiently to bing the paper below the gauge into
position for the guppers on the platen to lay hold of its projecting edge
haft A is rocked for this purpose by its arm A rigidly fixed to it and having
an anti-fiction 1oller A8 at its fice end bearing upon the cam A⁹ fixed upon the
cam shaft B The feed table is preferably made detachable so that it can be
removed to expose the platen and facilitate "making ready
"
The
The platen C swings on the rocking shaft C3 from a more or less horizontal
position shown in Figure 4 to the almost vertical position shown in the other

page_text: figures When in this position the oscillating type bed or form carrier D which
may be of ordinary design is brought towards the platen and gives the impression.
The bed D is oscillated by the rods D³, 13 (not shown in Figure 2) connected
to the cranks on eccentric studs in the wheels D, D employed to dive the cam
shaft B from the driving shaft B' The rocking shaft carrying the platen
18 a considerable distance away from the face of the platen so that such platen
moves bodily over through the arc of a cucle of sufficient radius and length to
permit of the front edge of the platen provided with a gripper E, which lays hold
of the paper, travelling far enough to carry the paper clear of the feed table to a
position to receive the impression. Furthermore the rocking shaft C³ is not in a
plane at right angles to the centre of the platen but it is in a parallel plane con-
aiderably nearer the rear edge C³ of the platen and a rigid rest C is provided upon
and against which the lower edge and back of the platen bears when it receives
the impression Besides facilitating passing the platen conveniently beneath the
feed table this form tends in conjunction with the rest C to give rigidity to
the platen whilst it receives the impression. The rest C is by preference adjustably
fixed upon the cross stay C³ by the screws C
The gupper E having notches CB in its front edge preferably extends completely
across the front of the platen and has an arm E² at each end connecting it to the
rocking shaft E³ mounted in bearings in the platen This form of gripper when
open forms no obstruction to the removal of the sheet. A spring E stretched
between the stud E³ on one side of the platen and one of the arms E³ closes the
platon and they are opened by the arm Es on the end of the 1ocking shaft E3 at
the other end of the platen The arm is provided with an anti-friction
roller E' which when the gripper requires to be opened 18 engaged by a tappet F
This tappet is pivoted on the side of and moves with the platen and it is provided
with an aim which plays between and alternately engages two projections F3
and F upon the lever 1 mounted upon the rocking shaft C. Whilst the platen
travels from beneath the feed table into position to receive the impression the
gupper E remains closed and retains the paper but after the impression 18 made
and the type bed D has sufficiently receded the anti-friction roller F upon the
lever F passes off the proud part 1 of the cam F8 and the lever moving
under the influence of its spung F bungs its projection against
the tappet aim F3 and moves the tappet sufficiently to open the gripper As the
platen moves back to beneath the feed table the tappet is held in position
to hold the gupper E open by the spring detent G pivoted to the side of the
platen engaging the rounded notch G in the tappet but when the proud pait F7
of the cam F engages the anti-friction roller the projection moves the
tappet so as to disengage it from the roller E' and allow the gupper to close upon
the edge of the paper projecting over the feed table
Pendant "frisket" fingers H, H adjustably mounted upon the shaft H' are
provided to bear upon the side margins of the paper and hold it in position against
the platen. The shaft H 18 mounted in bearing standards H³ on the side
frames B and B and it is rocked by its arm H³ coupled by the rod H to the
levei H7 nounted upon the stud H The lever H' canies an anti-fiction 1ollei H
which engages a cam B³ on the cam shaft B³ A spring Ho keeps the 1oller H
against its cam.
The paper is delivered from the platen by the grippers K carried between the
arms K. The fixed jaws K are rigidly hxed to the arms K³, and the movable
Jaws K³ are fixed upon the rocking shaft K' mounted in bearings in the arms.
The spring K extended between the projection K on the shaft K* and a stud K
on one of the arms is provided to close the grippers
When the grippers K
reach the platen they are sufficiently open to receive the edge of the paper and the
points of the jaws pass into the notches C³, formed in the platen and in the
gripper E for the purpose, and close upon the edge of the paper which at this
period 18 held by the frisket fingers H and the gripper E When the platen
moves away the paper is retained by the jaws K and K', then the arms K8 are

page_text: moved to the position shown in Figure 4 and the anti-fuetion ollei Ks on the
am K fixed on the shaft K engages the fixed meline L and thereby opening
the gppers Kreleases the paper which falls below The front make ready
clamp Clies below the notches in the platen so as not to obstruct the gupper
Jaws K which are opened to receive the paper by the piece L2 on the movable
1od L The inue edge of this rod is supported in a hole in the lug L on the
underside of C and its other end is coupled to the aim L of the bell-crank
Jever L mounted on the stud L' The other arm Le cannes an anti-friction
on the cam shaft The spring M on the
away from the arm Ko when the cam M
1olle L which bears upon the cam M
10d L is provided to move the piece L
permits it to do so
The oscillating motion of the type bed D is utilized to actuate the platen by
means of the 1ods N, N coupling the oscillating bed to arms N, N* on the
1ocking shaft N³
The armis N, N on the shaft N are coupled by the rod N to
the cross piece N', the round ends of which fit into the round holes N formed in
the aims Ne projecting from the platen The aims and connecting 1ods are
arranged in this way so that the platen is slowly stopped and started The
spring S is introduced between the colla $2 on the 1od No and the cross piece No
to enable the platen to ho brought down upon the rest before the oscillation of
the type bed towards the platen is quite completed and to allow it to remain at
iest by compressing the sping until the type has inceded a sufficient distance from
the sheet of pape
The aims K³ are fixed on the 1ocking shaft P actuated by its arm P³ coupled
by the 1od P³ to the arm P' on the rocking shaft 1 which latter shaft is actuated
by its aim 1 coupled by the rod P7 to the aim Ps on the platen
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is
-
1 The combination with a rocking platen provided with a gupper or grippers
for caying the sheet from a feed table into position to receive the impression and
having its fulcium sufficiently away from the platen face to permit of this, of a
fixed shoe on support adapted to engage the lower edge of the back of the
platen and cooperate with the said fulcrum in igidly supporting the platen whilst
the impression is made, substantially as herein shewn and described and illustrated
In the accompanying drawings
2 The combination with a rocking platen provided with a gripper or guppers
for carrying the sheet from a feed table into position' to receive the impression, of
pendant fisket fingers pivoted independently of the platen, substantially as hereiu
thewn and described and for the purpose specified
3 The combination with a locking platen, of a feed guppe pivoted thereon
at each side beyond the side maigins of the sheet to be printed and extending
completely across the front edge of the platen, substantially as herem shewn and
described.
The combination and arrangement of mechanism for opening and closing the
feed grippers substantially as herein shewn and described and illustrated in the
accompanying diawings
5 The combination and arrangement of mechanism for operating the platen by
the movement of the type bed, substantially as herein shewn and described and
illustrated in the accompanying drawings.
Dated this 8th day of April 1399
DRACUP & NOWELL,
Patent Agents, Bradford