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Патент USA US2106078

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Jan. '18, 1938.
‘2,106,078
R. W. BENDER
PLATE HOLDER FOR IN'I'AGLIO PRINTING MACHINES
Filed June 15, 1936
INVENTOR,
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BY
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ATTORNEYS.
Patented Jan. 18, 1938
2,106,078
UNITED STATES PATENT OFFICE
2,106,078
PLATE HOLDER FOR INTAGLIO PRINTING
MACHINES
Robert W. Bender, Kansas .City, Mo., assignor to
Inter-Collegiate Press, Kansas City, Mo., a cor
poration of Missouri
Application June 15, 1936, Serial No. 85,339
6 Claims.
(01. 101-478)
This invention relates to intaglio printing machines of the type wherein an arcuate printing
plate is employed, and the primary object is the
provision of an unique holder for the plate which
January 21, 1935, and this application is a con
tinuation in part of said application, which re
lates to intaglio printing machines.
The rotatable cylinder 8 upon which is mount
5 has as a part thereof, means for removably se-
ed one or more of the specially formed printing 01
curing. the. plate in place, positive guide means
for the plate, and structure whereby the entire
arrangement, including the plate, might be
mounted upon a rotatable cylinder for adjust10 ment longitudinally thereof.
A still further object of the invention is to
provide a specially formed printing plate for
intaglio printing machines, which plate is formed
with an offset portion adjacent one end thereof
15 for the purpose of engaging a coacting element
on the aforesaid plate holder and to the end that
the printing surface may be positively freed of
plates, is a part of the printing machine, and the
plate holder embodying the invention is mounted
upon said cylinder 8 for longitudinal movement
therealong. The plate holder per se comprises
a two-part collar, one of which parts I0 is 10
provided with radially extending ears l2, through
which is formed openings 14 for the reception of
bolts or similar securing means IS. The other
part N3 of the split collar has coacting, radially
extending portions provided with tapped open- 15
ings 20 in axial alignment with openings 14 so
that said bolts 16 might be drawn tight when the
excess ink or the like during work so that the
plate will not produce unsatisfactory results.
'20
A yet further aim of the present invention is
collar is secured in the desired position on cylin
der 8. A key 22 rests in key-way 2:5 in part 18
and coacting key-way 26 in cylinder 8 so that 20
the provision of a novel method of forming a
movement of the two-part collar about cylinder 8
plate for intaglio printing machines, which
is precluded.
method includes the steps of engraving. one side
of a flat planar plate and, thereafter, arching
.25 said plate so that the same might be secured
upon .a concavev surface and the work produced
Part l8 has a radially extending ?n 28, the
outer face 30 of which is arcuate and presents a
convex surface concentric to the axis of rota- 25
tion of cylinder 8. Fin 28 has as a part thereof, a
therefrom without experiencing the effects of
distorted engraving which might occur if the
engraving were produced upon an initially
'30 arched plate.
With the foregoing general objects in view with
respect to the plate, holder therefor, and the
method of producing said plate, the embodiment
of the invention exempli?ed in the. accompanyI35 ing drawing will be fully described. In said
shoulder 32, against which rests the end of print
ing plate 34. In the instance illustrated, ?n 28
is extensive enough to accommodate two plates
34 and it is obvious that this ?n might be in- 30
creased in size so as to support at least one
other plate. Shoulders 32 extend inwardly be
10W face 30, and plates 34 are arranged on face
30 in end-to-end relation, with the ends thereof
in abutment with shoulders 32. The. other ends 35
drawing:
Figure 1 is a side elevation of a plate holder
for intaglio printing machines embodying the
invention and in operative position on the cylin40 der of the machine.
Fig. 2 is a top plan view of the same,
Fig. 3 is an elevation of the other side of the
plate holder shown in Fig. 1.
Fig. 4 is a cross sectional view through the
45 plate holder, with cylinder in elevation, taken on
line IV--IV of Fig. 1.
Fig. 5 is an edge elevation of the formed plate
per se, and,
Fig. 6 is a cross sectional view through the
50 plate holder alone.
The plate and plate holder forming the subject matter of this particular invention is
especially adaptable for use in engraving‘ machines such as shown and described in my 00-
of plates 34 extend over a recess 36 provided in
?n 28, and after the plates have been mounted,
the said other ends might be bent slightly in
wardly, as shown in Fig. l.
Each‘of plates 34 has an offset 38 created 40
thereon adjacent one end, and in practice, it
is this end of plate 34 that is considered to be
the “guide end”. This offset portion 38 curves‘
inwardly out of the normal plane of the major
portion of plate 34 so that shoulder 32 might be 45
engaged, and further so that any irregularities
at the end of plate 34 Will not be effective in
catching and transferring ink to the stock.
Turning the opposite end of plate. 34 inwardly as
indicated in Fig. 1 so that it drop-s slightly into 50
recess 36 likewise is an advantage, especially
since the printing surface 40 of the plate must
be wiped clean before the plate may be used effi
ciently. This guide end of plate 34 is used when
55 pending application Serial Number 2,700, ?led
following the method of producing an engraved 55
2
2,106,078
printing plate, and because of such employment,
little dif?culty is encountered when setting the
printing machine in operation.
Each plate 34 is secured in place on ?n 28 by
opposed clamps 42 and 44, the former being re
tained in place by bolts 46 that extend through
clamp 42 and into tapped openings 48 drilled into
?n 28.
Clamp 44 is specially made and a single
adjusting bolt 50 secures the same in place.
10 Bolt 50 is in threaded engagement with a tapped
hole 52 provided in ?n 28 and in order that clamp
44 might move away from the edge of plate 34
when bolt 58 is loosened, a spring 54 is employed
and combined with the parts as illustrated in Fig.
15 4. Spring 54 is seated in a socket 56 and bears
against the inner face of clamp 44 at a point
adjacent to bolt 50. A laterally extending ?ange
58 is integral with clamp 44 along the inner face
thereof and at one of its arcuate edges, and an
20 inturned, sharpened ?ange Bil is formed on the
same surface of clamp 44 along the other arcuate
edge thereof. Bolt 50 is between ?anges 58 and
80 and when the bolt is tightened, spring 54 is
compressed and sharpened ?ange G0 is drawn
tightly into engagement with the longitudinal
edge of plate 34. The inner face of ?ange 58
serves as a fulcrum point and the remaining por~
tion of clamp 44 is spaced from the adjoining
face of ?n 28. Under normal conditions, clamp
30 42 need not be moved when a printing plate is
adjusted or replaced.
'
Any number of plate holders of the nature just
detailed might be mounted upon cylinder 8 and,
obviously, each will be independently movable
longitudinally along cylinder 8 so that the space
between the several holders employed may be
increased or decreased, as desired. A plate
holder of the character speci?ed presents means
whereby a large number of calling cards, as an
40 example, may be printed at the same time and
on large sheets of stock in “gang” arrangement.
Plate 34 should be formed in a particular man
ner and the engraving 62 of one face of plate 34
should be done before plate 34 is arched. Here
tofore engraving of arched plates to produce in
taglio printing has presented its di?iculties be
cause of the failure of the engraver to bring into
consideration the curvature of the plate. When
producing an engraved plate for use in my in
taglio» printing machine, the same should be en
graved while it is ?at and subsequently arched
and provided with an offset portion 38 through
novel means forming the subject matter of my
application ?led on even date herewith.
When
engraving 62 is done, the end of plate 34 which
is later offset with portion 38 should form the end
from which to gauge or place the line passing
through the center of engraving 62. When that
center line is established and engraving 62 im
60 printed on plate 34 so that it balances with re
spect to said line, the placement of plate 34 in
the holder with that offset end in engagement
with shoulder 82 will always present to- the op
erator something like an accurate ?rst impression.
Where several holders are mounted upon cyl
inder 8, key 22 maintains them all in alignment,
and since each holder is alike, and further since
offset portions 38 and shoulders 32 are always
brought together, the aforesaid center line of
70 engraving 52 on every plate 34 should normally
be upon a common straight line extending across
the large sheet of stock being printed.
Advantages set forth in the foregoing speci?ca
tion will be obtained when using a plate holder
75 and plate constructed in accordance with this in
vention, and while one preferred embodiment has
been illustrated and described, it is obvious that
changes might be made without departing from
the spirit of the invention or scope of the ap
pended claims.
Having thus described the invention, what is
claimed as new and desired to be secured by
Letters Patent is:
, 1. In an intaglio printing machine, a cylinder;
a pairof arched plates each having a printing 10
surface thereon; a ?n mounting the plates in
spaced-apart, end-to-end relation on the cylinder
in spaced relation thereto; clamps on the said ?n
for each plate respectively for removably securing
the same in operative position; and guide ele 15
ments on the ?n for said plates, said guide ele
ments engaging the remote ends of said plates,
said clamps engaging the plates along the arcuate
longitudinal edges thereof.
2. In an intaglio printing machine, a cylinder; 20
a pair of plates each having a printing surface
thereon; a ?n mounting the plates in spaced
apart, end-to-end relation on the cylinder in
spaced relation thereto; clamps on the said ?n for
each plate respectively for removably securing 25
the same in operative position and guide shoul
ders formed on the ?n for said plates extending
below the normal plate-supporting surface there
of, said plates each having an arcuate offset por
tion at one end thereof for extending below the 30
said normal surface to permit the ends at said
offset portions to engage said shoulders.
3. In an intaglio printing machine, a cylinder;
an arcuate plate, having a printing surface there
on; and means for mounting the plate on the cyl 35
inder in spaced relation thereto comprising a two
part collar, a radially extending ?n integral with
one part of the collar having an arcuate plate
supporting surface, and clamping jaws on each
side of the said ?n for engaging the longitudinal
edges of said plate.
4. In an intaglio printing machine, a cylinder;
an arcuate plate, having a printing surface
thereon; and means for mounting the plate on
the cylinder in spaced relation thereto compris 45
ing a two-part collar, a. radially extending ?n
integral with one part of the collar having an
arcuate plate-supporting surface, and clamping
jaws on each side of the said ?n for engaging the
longitudinal edges of said plate, said ?n having 50
a guide element formed thereon for engaging
one end of the printing plate.
5. 'In an intaglio printing machine, a cylinder;
an arcuate plate, having a printing surface there
on; and. means for mounting the plate on the cyl
inder in spaced relation thereto comprising a two
part collar, a radially extending ?n integral with
one part of the collar having an arcuate plate
supporting surface, and clamping jaws on each
side of the asid ?n for engaging the longitudinal
edges of said plate, said ?n having a guide element
thereon for engaging one end of the printing plate
and a recess provided therein for receiving a por
tion of the printing plate at the other end thereof.
6. In an intaglio printing machine, a cylinder;
an arcuate plate having a printing surface there
on; and means for mounting the plate on the cyl
inder in spaced relation thereto, comprising a
collar ?tted onto the cylinder, a radially extend
ing, relatively narrow segmental ?n integral with
the collar having a pair of ?at sides in planes
at right angles to the axis of the cylinder, and
clamping jaws on the said ?at sides for engaging
the arched longitudinal edges of said plate.
ROBERT W.- BENDER.
75
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