Improvements in Means for Holding Paper or other Material whilst being Operated upon in Printing or Embossing Presses.
Year: 1899

page_text: Date of Application, 20th July, 1899
Complete Specification Left, 18th May, 1900-Accepted, 20th July, 1900
Improvements in Means for Holding Paper or other Material whilst
being Operated upon in Printing or Embossing Presses.
I, JOSEPH YARDLEY JOHNSTON, of 24, Bride Lane, in the City of London,
Manufacturer of Steel Die and Plate Presses, do hereby declare the nature of
this invention to be as follows:-
This invention has reference to improvements in means for holding paper
or other material whilst being operated upon in printing or embossing presses,
whereby the paper or other material is prevented from sticking to and being
lifted and carried away by the die. Means according to this invention may be
used with presses of various constructions.
The press is provided with a lay-over automatically operated, so that after
the paper or other material to receive the impression is laid on the counter
and just as the die descends, the said layover drops on the paper and is not raised
until after the die has been lifted and started to move away. The apparatus
employed, comprises a pin sliding vertically in a hole in the frame of the
press and fitted at the bottom with a plate and also with rollers which bear
against a vertical face and so prevent the said pin twisting. Another roller is
provided on the said plate which rests on the edge of a cam ring mounted on
a rotary vertical shaft and having a depression, which at the right moment
permits the said pin to drop, and the inclined side of the said depression, after
the impression blow has been struck and about the time the die moves away,
subsequently raises the pin which is kept raised until the depression again comes
under the roller.
The lay-over plates are held in a clamp, or other suitable device, arranged
to be readily attached to or removed from the top of the aforesaid sliding pin.
The aforesaid layover plates are so constructed and shaped that they can
be adjusted in the clamp to suit dies, &c., of any size capable of being used in
the press.
a screw.
In one arrangement, the lay-over. plates are held in a clamp, consisting of a
piece having a hinged cover, and, after being adjusted to the required position,
the said plates are gripped between said cover and piece by tightening
A taper dovetailed head is fixed on the top of the vertically moving pin, and a
corresponding recess is formed on the underside of the clamp-piece so that the
clamp can be readily placed upon or removed from the said pin.
position it is held by a self-acting spring latch pin or bolt, the end of which
springs into a notch cut in the top of the dovetailed recess in the clamp piece.
When in
The aforesaid lay-over plates are of such shape that they can be adjusted in
the clamp to suit dies etc., of any size capable of being used in the press and
plates of one or more sizes may be provided. In operation they are so placed
that they encircle the counter on one, two, three or four sides and hold the paper

page_text: or stock down slightly below the surface to be printed, thus keeping same away
from contact with the die edges and so preventing any ink which may be acci-
dentally on the said edges being transferred to and spoiling the impression.
The plates may conveniently be of L-shape and fixed in position upon the clamp
by set screws which pass through slots formed in them; the clamp itself being
adjustable and similarly fixed in position. An adjustable stop may be provided
to regulate the drop of the layover, for different thicknesses of counter.
Arrangements according to this invention are suitable for use in a press of the
type described in the specifications of former Letters Patent granted to me,
No. 16704 of 1893 and No. 14664 of 1894 and in the specification of another
application for Letters Patent by me and bearing even date herewith is described
the nature of my present invention as embodied in an improved construction and
arrangement of press for printing or embossing by means of female or intaglio
surfaces.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Chartered Patent Agent.
Improvements in Means for Holding Paper or other Material whilst
being Operated upon in Printing or Embossing Presses.
I, JOSEPH YARDLEY JOHNSTON, of 22, Bride Lane, in the City of London,
Manufacturer of Steel Die and Plate Presses, 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 has reference to improvements in means for holding paper
or other material whilst being operated upon in printing or embossing presses,
whereby the paper or other material (hereinafter referred to as paper) is pre-
vented from sticking to and being lifted and carried away by the die. Means
according to this invention may be used with presses of various constructions.
The press is provided with a lay-over automatically operated, so that after
the paper or other material to receive the impression is laid on the counter,
force, male plate, or other device or material which is to resist the impression
blow, and just as the die descends, the said lay-over drops on the paper and is not
raised until after the die has been lifted and has started to move away, thereby
ensuring registration and preventing the paper being carried away during the
operation of the press.
The apparatus employed comprises a pin sliding vertically in a hole in the frame
of the press and fitted at the bottom with a plate and also with rollers which bear
against a vertical face and so prevent the said pin twisting. Another roller is
provided on the said plate which rests on the edge of a cam ring mounted on
a rotary vertical shaft and having a depression, which at the right moment
permits the said pin to drop, and the inclined side of the said depression, after
the impression blow has been struck and about the time the die moves away,
subsequently raises the pin which is kept raised until the depression again comes
under the roller.
The lay-over plates are held in a clamp, or other suitable device, arranged
to be readily attached to or removed from the top of the aforesaid sliding pin.

page_text: The aforesaid lay-over plates are so constructed and shaped that they can
be adjusted to the clamp to suit dies &c., of any size capable of being used in
the press.
One arrangement of mechanism according to this invention (and suitable for
use in a press of the type described in the specifications of former Letters Patent
granted to me No. 16704 of 1893 and No. 14664 of 1894) is illustrated in the
accompanying drawings and is also described in the specification of another
application for Letters Patent by me bearing even date herewith and numbered
14994, in which specification is described the nature of my present invention
as embodied in an improved construction and arrangement of press for printing
or embossing by means of female or intaglio surfaces.
Referring to the accompanying drawings,
Figs. 1, 2 and 3 are respectively a plan, a side elevation and a front sectional
elevation of the lay-over;
Fig. 4 is a section on the line A-A, Fig. 2:
Fig. 5 is a detail sectional view to an enlarged scale; and
Fig. 6 is a similar view to Fig. 2 showing the paper held down upon a counter
or other device which is to resist the impression blow.
The lay-over comprises a pin a sliding vertically in a hole in the frame o
of the press and carries lay-over plates d at its top, whilst at the bottom, it is
fitted with a plate e in which are mounted a pair of rollers of that bear against
a face g on the frame c and so prevent the pin a turning another roller his
also secured to the plate e and rests on a cam ring i fixed to a rotary vertical
shaft j. A depression in the cam ring permits the pin a to drop at the
right moment, the plates then holding the paper. After the impression blow
has been struck, the inclined side of the depression moves under the roller h
and so raises the pin a and its plates & which are kept raised until the depression k
again comes under the roller h.
The pin a has screwed into its upper end the shank of a dovetailed head 7,
which gradually decreases in width; a corresponding recess m is formed in the
underside of a bar n. A sliding carriage ois mounted on the bar n and is formed
with a transverse groove in which the plates d rest. The barn, when in position
on the pin a is held by a chisel-headed spring bolt q located in a hollow part
of the pin and engaging in a notch in the barn in such a way as to prevent acci-
dental dislodgment of the bar but so as to yield sufficiently readily to allow the bar
to be detached by hand.
The plates d, which are of L-shape, are slotted, and each is fixed in position
by a set screw passing through it, said screws extending through holes in the
carriage o and through a slot in the bar n into tapped holes in a movable clamp-
ing strips; the arrangement is such that, after slacking the set screws the
plates can be adjusted to suit dies etc., of various sizes. In operation they
are so placed that they rest evenly upon the paper which is to receive the
impression beyond and on one or more sides (usually three) of the counter as
shown in Fig. 6, so as to hold the paper down around the counter slightly below
its active surface, thus keeping the paper out of contact with the edges of the
die and preventing any ink which may be on the said edges being transferred
to the paper and spoiling the impression. The plates & being slotted can be moved
transversely on the bar n and the plate carriage o being movable longitudinally
along the said bar, the plates can be readily adjusted to suit various dies. An
adjustable stop t may be provided on the press to regulate the drop of the lay-
over, according to the thickness of counter employed. With lay-over apparatus
constructed and arranged as described the plates & move towards and from the
counter or other device in suchwise as to be always practically parallel therewith;
there is thus no tendency to shift the paper through one portion of the plates
coming into contact with it before another. A further advantage over layover
devices which oscillate is that simple time and space is left for the operator to
insert the paper beneath the plates d.

page_text: Having now particularly described and ascertained the nature, of the said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. A device for holding paper whilst being operated upon in printing or
embossing presses comprising layover plates adapted to rest upon and hold the
paper down around the device which is to resist the impression blow and means
for supporting, guiding, and raising and lowering in a parallel manner and at
the required times the said plates, substantially as described.
2. A device for holding paper whilst being operated upon in printing or
embossing presses comprising layover plates adapted to rest upon and hold the
paper down around the resisting device, a longitudinally movable pin to which
said plates are attached, means for guiding said pin and attached parts, means
for raising and lowering them in the manner set forth and at the required times,
substantially as described.
3. A device for holding paper whilst being operated upon in printing or
embossing presses comprising layover plates adapted to rest upon the paper,
a pin which is vertically movable endwise and to which said plates are attached,
rollers carried by said pin, a vertical face against which said rollers bear and
means for raising and lowering said pin and attached parts in the manner set
forth and at the required times, substantially as described.
4. A device for holding paper whilst being operated upon in printing or
embossing presses comprising layover plates adapted to rest upon the paper,
a longitudinally movable pin to which said plates are detachably connected,
means for guiding said pin and attached parts and means for raising and lowering
them in the manner set forth and at the required times, substantially as described.
5. A device for holding paper whilst being operated upon in printing or
embossing presses, comprising lay-over plates adapted to rest upon the paper,
means for supporting, for guiding and for raising and lowering in the manner set
forth and at the required times the said plates, and means for adjustably connect-
ing said plates to the supporting means, substantially as described.
6. A device for holding paper whilst being operated upon in printing or
embossing presses comprising layover plates adapted to rest upon the paper,
a vertically movable pin, a cross bar detachably fitted to its upper end, a carriage
which supports the plates and which is mounted so as to be capable of sliding
on said cross bar and means for raising and lowering the pin and its attached
parts in the manner set forth and at the required times, substantially as described.
7. A device for holding paper whilst being operated upon in printing or
embossing presses comprising layover plates adapted to rest upon the paper,
a longitudinally movable pin to which said plates are attached, and a cam whereby
the raising and lowering of said pin and plates is effected in the manner set
forth and at the required times, substantially as described.
8. A device for holding paper whilst being operated upon in printing or
embossing presses comprising slotted lay-over plates adapted to rest upon the paper
a slotted cross-bar, means for detachably securing said cross-bar to said pin,
a carriage adapted to slide on said cross-bar and formed with holes, a clamping
strip formed with tapped holes, and set screws adapted to pass through said
plates, carriage and cross bar into the clamping strip, substantially as described.
9. A device for holding paper whilst being operated upon in printing or
embossing presses, comprising lay-over plates adapted to rest upon the paper,
a vertically movable pin to which said plates are attached, rollers carried by
said pin, a vertical face against which said rollers bear, a cam-roller carried
by said pin and a rotary cam bearing against said roller, substantially as
described.
10. A device for holding paper whilst being operated upon in printing or
embossing presses, comprising lay-over plates adapted to rest upon the paper;
a longitudinally movable pin with dovetailed head, a cross bar to which said.

page_text: plates are secured and formed with a transverse recess fitting said head, and a
spring bolt carried by said pin and adapted to engage with said cross bar,
substantially as described.
11. A device for holding paper whilst being operated upon in printing or
embossing presses comprising lay-over plates adapted to rest upon the paper,
means for supporting, for guiding and for raising and lowering at the required
times the said plates, and an adjustable stop for limiting the downward movement
of the said plates, substantially as described.
12. Means for holding paper whilst being operated upon in printing or
embossing presses constructed, arranged and operating substantially as described
with reference to and shown in the accompanying drawings.
Dated this 18th day of May 1900.
For the Applicant,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Chartered Patent Agent.
1900.
For the Applicant,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Chartered Patent Agent.