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Патент USA US2129767

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Sept 13, 1938.
w. c. HUEBNER~
I 2,129,767
PHOTQMECHANICAL PRINTING APPARATUS
Filed July 20, 1,936
5 Sheets-Sheet 1
‘Q
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1220622221’
Wzllkkvn/ C Hzzeéner
Sept. 13, 1938.
v'v._'c:. HUEBNER
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PHOTKSMECHANICAL PRINTING APPARATUS
Filed July 20, 1936
F94
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A:
A? [776“
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2,129,767
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3 Sheets-Sheet 2
Sept. 13, 1938.
w. c. HUEBNER
2,129,767
PHOTOMECHANICAL PRINTING APPARATUS
Filed July 20, 1936
5 Sheets-Sheet 5
2,129,767
Patented Sept. 13, 1938
UNITED STATES PATENT OFFlCE
'
2,129,767
’
PHOTOMECHANICAL PRINTING APPARATUS
William C. Huebner, New York, N. Y.
Application July 20, 1936, Serial No. 91,52‘! 5 Claims. (CI. 95-13)
This invention relates to improvements in latter are generally too expensive in initial in
vestment and operating costs, to warrant their
photomechanical printing apparatus.
use in the simpler forms of photographic plate
In the making of printing plates whereon pic
making.
torial or type matter is photographically repro
One object of this invention, therefore, is to
5 duced, it is customary to employ either so-called
photo-composing machines or vacuum printing
frames. Photo-composing machines, being in
tended not only for the reproduction of ordinary
black and white work but for delicate color work,
10 are' relatively expensive, require highly skilled
operators, and are not generally economically
justi?ed in making certain types of press plates,
such as those for newspapers, tari? sheets and
similar relatively simple work where extreme ac
curacy of registration is not required.
Heretofore, vacuum printing frames have been
generally used for the simpler classes of work
but the same have a relatively limited scope of
use; are comparatively difficult to handle and
'20 cannot economically meet certain requirements
often encountered in practice. In reproducing
forms of type pages, tari? sheets and the like by
means of vacuum'printing frames, two general
methods have commonly been employed. One
25 method requires mounting of the ?lms by strip
ping them upon a thick glass plate and the other
method employs a large opaque sheet in which
openings are cut, corresponding to the pages re
quired by the form, and the ?lms are then mount
30 ed over the openings and pasted to the opaque
sheet. In both cases, ‘the glass plate of the pre
pared opaque sheet as the case may be, is then
placed in the vacuum printing frame in contact
with the sensitized plate and the one or more
35 subjects to be printed are exposed to the light
action. Frequently, negatives comprising dif
ferent type are different from the negatives hav
_ ing pictorial matter thereon so that different
periods of light exposure are essential to obtain
40 the desired prints on the sensitized plate. When
using the vacuum frame, in order to permit of
the different exposures, the operator must mask
. all such portions that require one period of ex
posure while exposing the others.
This is an
45 obvious time-consuming operation and attendant
with uncertain results. Furthermore, it is fre
quently necessary to repeat the same subject on
the press plate and where vacuum frames are
employed, this necessitates the making up of a
50 corresponding plurality of negatives, thus not
only increasing the’ expense but being likely to
result in negatives of different quality.
‘' While the disadvantages of vacuum printing
frames above pointed out, are not inherent in the
55 usual photo -composing machine, nevertheless the
provide a simple and relatively inexpensive ap
paratus for photographically making printing
plates in a more expeditious, e?icient and‘ less
expensive manner than heretofore.
Another object of the invention is to provide a
photomechanical apparatus such that a plurality
of exposures on the plate‘may be made simul
taneously under conditions requiring either like
or different periods of light exposure for the dif
ferent subjects being reproduced.
15
'
A more speci?c object of the invention is to
provide an apparatus of the character indicated
wherein is combined a monorail or bar adjust
able over the surface of the press plate and with
which are cooperable one or a plurality of in
terchangeable detachable and reversible printing
element holders to speed up the operation and
facilitate the use of negatives of di?erent sizes
and characteristics and also, on account of the
reversible mounting feature of the holders, re
duce the over all size of the apparatus to a mini
mum for any given size press plate and permit
ting photographic reproduction on all portions
thereof.
A speci?c object of the invention is to provide
an apparatus of the character indicated wherein
may be temporarily employed a layout sheet over
the press plate to facilitate location of the nega
tives to be printed and which layout ‘sheet may
then be removed or retracted during the ex
posure.
‘
_
I
Other objects of the invention will more clear
ly appear from the description and claims here
inafter following.
'
>
In the drawings forming a part of this speci?
cation, Figure 1 is an elevational view of an ap
paratus embodying the improvements. Figure 2
is an enlarged, detail elevational view of a por
tion of the structure shown inv Figure’. 1. Figure
' 3 is aside elevational view of that portion of the
structure illustrated in Figure 2. Figures 4 and
5 are sectional‘views corresponding to the section
lines 4-—4 and 5-5, respectivelyrof Figure 2.
Figure 6 is a vertical sectional view correspond
ing to the line 6-6 of Figurel. Figure '7 is‘a
front elevational view, upon an enlarged scale,
of_a portion of the apparatus shown in Figure 1
but illustrating a modi?ed form of saddle or
adapter for holding the negatives. ‘Figure 8' is
a vertical sectional view corresponding to the
2
2,129,707
line 8-8 of Figure 7. And Figure 9 is a more or
less diagrammatic view of the structure illus
trated in Figure 7 showing the manner of ob
to the maximum micrometer adjustment per
mitted by the micrometer wheel and screw |l—-l I.
taining an angular position of the negative and
of the rail C and parts carried thereby, an operat
ing shaft 25 is provided, journaled at its ends in
holder with reference to the main bar or rail.
Referring ?rst to the construction illustrated in
Figures 1 to 6 inclusive, the apparatus is shown
as including a main flat bed-like member or sup
port A of any suitable material, possessing the
10 necessary rigidity, and the area of which is slight1y greater than that of the maximum size press
plate B intended to be used thereon. Said sup
port A may be used in the horizontal by resting
upon any suitable table or similar support; in the
15 vertical by being suitably so supported or in an
inclined position, as may best suit the desires of
the particular operator. On its top or main sup
porting flat surface, the press plate B is detach
ably secured by anysuitable means such as the
20 flush screws i0—lll at the corners as shown, it
being understood that the plate will be held taut
and perfectly ?at for receiving the exposures.
Along each side edge thereof, the main supportA
is provided with a guide rail I l projecting a short
25 distance both above and below the upper and
lower surfaces of the main support A, as best
shown in ‘Figures 4 and 5. Preferably on its top
side, the support A is provided adjacent each side
edge thereof with a longitudinally extending rack
30 bar I! and a scale indicator l3. Preferably, the
rack bars 12 are provided with a micrometer lon
gitudinal adjustment as by means of the microm
eter screws 14-44 at the bottom ends thereof,
which are swiveled in suitable brackets l5—-l5
35 secured to the main support A. By these microm
eter adjustments, accurate alinement of the rack
bars may be obtained and also a micrometer ad’
justment of the cross bar, hereinafter referred to,
vertically may be obtained within limited amounts,
40
when desired.
‘
"
~
Slidably mounted on each of the guide rails ii
is a cross head or block I6 suitably retained in
place by a gib plate H so that the blocks may be
adjusted back and forth in one line of direction
45 (up and down as shown in Figure 1) with reference
to the main support A. Carried by the horizon
tally alined guide blocks i6 is a main monorail or
cross bar C of preferably rectangular cross sec
tion, as best shown in Figure 6, and wherein the
50 longer dimension is vertical or parallel to the sup—
porting surface so as to minimize any tendency of
deflection from the weight of the adapters ' or
saddles hereinafter referred to. As clearly‘ shown,
said rail C is spaced a short distance from the
55 support A and plate B mounted thereon and is,
of course, movable thereover. The rail C is also
preferably made adjustable horizontally with
reference to the guide blocks ii for a limited
amount by means of a micrometer wheel fl and
screw IS, the latter being threaded onto the bar
and the wheel being carried by a shaft lournaled
in an extension block I I 6, the shaft being extend
ed outwardly of the extension block I I6 and
preferably squared as indicated at 20. to facilitate
operation by a wrench or the like, said shaft
carrying also a wheel 2| by which the micrometer
adjustment may be made directly by hand, if de
sired.
'
The right-hand guide block l6, as viewed in
70 Figure 1, carries a beveled scale plate 22 which, in
conjunction with the indicator mark 23 on the
rail C, suffices to indicate the amount of adjust-,
ment in conjunction with the micrometer wheel
II. The rail C is also provided with an indicator
75 main scale 24, the intervals of which correspond
To mechanically effect the bodily movements
the ‘guide blocks l6, and having pinions 26 there
on cooperable with the rack bars I2. The shaft is
extended preferably at each end beyond its bear
ings and provided with hand wheels 21-21 and
at the right-hand end may also have a squared
extension 28 for the use of a wrench or like tool.
The bearings for the shaft 25 are preferably of the
split type, as indicated at 29 in Figure 3, and the
shaft may be frictionally clamped in any desired
position by means of the clamping screws 3|,
mounted in and coacting with the split sections of
the bearings. Also, the guide blocks and associ
ated parts carried thereby, may be additionally
locked or clamped by means of set screws 3l—8l,
threaded through the blocks and adapted to en
gage the edges of the guide rails.
Cooperable with the rail C are one or more
adapters or saddles, three being illustrated in
Figure 1, and indicated as D, D2 and D3, respec
tively. Each of said adapters is primarily char
acterized by the fact that it may be clamped or
locked to the rail C in any desired position length
wise of the rail and either extending upwardly
therefrom in a plane parallel to the press plate
as in the case of the two adapters D1 and DI or
downwardly therefrom also in a plane parallel
to the press plate, as indicated by the adapter D’.
A second characteristic of each of the adapters
is that the same may be applied or attached to
or removed from the rail C at any point along
the rail without disassembling any of the parts
of the apparatus or disturbing the operative rela
tion between the rail C and the press plate and
main support. Any suitable construction may be
employed for such detachable and reversible ar
rangement, the one shown comprising upper and
lower ?anges 32 and 33 extending inwardly there
from, as best shown in Figure 6, so as to ride the
upper and lower edges of the rail and permitting
removal of the saddle transversely from the bar C.
As will be apparent, the adapters are adjusted
manually on the railC and, when the proper posi
tion has been obtained, are locked in place by
set screws indicated at 34. To facilitating locating
of the adapters, the same are preferably provided
with centrally disposed sight holes 35 through
which may be viewed the indicator scale 24, as
shown in Figure 1. In certain instances, where
finer accuracy of adjustment is desired, the
adapters may have associated therewith a post
also slidably mounted on the rail C. One such
post is indicated at 60 in Figure 1 showing the
manner of using the same in connection with the
adapter D’. The post 60 is a split member strad
dling the rail C and adapted to be clamped in any
adjusted position as by the set screws ii and also
readily detachable from the rail C at any point
therealong. Swiveiled in the adapter is a screw
62, which has threaded engagement with the
adapter so that. when the adapter has been
roughly positioned and the post 68 clamped, the
finer adjustment may be effected by turning the
screw 62, as will be obvious.
The adapters or saddles may be of like or vary
ing sizes for the mounting and retaining thereon 70
of negative holders E1, E2 and E3 of like or differ
ent sizes. As shown, the negative holder E3 is of
somewhat lesser size than the other two holders
to more clearly illustrate the possibilities of the
improved structure. To retain each negative 75
3
2,129,7e7
holder, each adapter is provided with a vertical
need not be speci?cally described. As in the pre
?ange or extension 36 of suitable width cor
responding to the negative holder to be attached
thereto, each said ?ange or extension projecting
viously described form, a clearance space I“ is
left so as to allow of clearance movement of the
or extending parallel to and over the main sup
port and press plate thereof and having a pair
of attaching screws 31 and a pair of alining or
negative and holder relative to the press plate to
permit of shift.
As will be apparent, the adapter D4 possesses the
same essential characteristics as those previously
registering dowels 38. In the construction best
illustrated in Figure 6, the negative holder E1
there shown is of that type disclosed in my Patent
No. 2,000,390, granted May '7, 1935, the rigid por
tion of the holder being indicated in Figure 6 at
described, that is, detachability and reversibility.
In addition, it has incorporated therein means
for accomplishing other results as follows. _, In 10
certain instances, it is desired to tilt the subject
39 and into which the attaching screws 3'! are
preferably threaded. In this type of construction,
15 a spacer 40 is interposed between the negative
holder and the ?ange 36 of the adapter and a
slight amount of clearance is allowed, as indicated
at 4|, to permit the negative holder to be dis
placed slightly away from the press- plate during
20 a shift while at the same time allowing the nega
tive to be drawn tightly against the press plate
when suction is applied as through the suction
tube, indicated conventionally at 42 in Figure 1.
By employing detachable adapters or saddles
25 as shown, the work may be performed exceeding
1y rapidly inasmuch as apparent, the negative
holders may be attached to the adapters outside
of the photographic apparatus and as many as
may be desired. Each adapter with its attached
30 negative holder is then applied manually to the
rail and adjusted to‘the desired position, where
upon the same is ready for an exposure. As
. obvious, a plurality of adapters with attached
negative holders may be applied simultaneously
to the rail and simultaneous but independently
controlled exposures made, preferably by port
able arc lamps with proper hoods, a ‘portion of
one of which is indicated at 43 in Figure 6. Each
portable arc lamp will be brought up against its
40 respective negative and the proper exposure made,
dependent upon the particular negative. being
photographed. Further, it will be noted that on
account of the reversible features of the adapters,
- it becomes unnecessary to extend the main sup
45 port any appreciable distance beyond the upper
and lower edges of the press plate, as heretofore
necessary in all photo-composing‘ machines, so
far as known. As apparent'from Figure 1, the
50
55
adapter D3 and corresponding negative holder E3
can be employed in its down position to photo
graph the subject matter on the lower portions of
the plate, while the rail is positioned above the
lower edge of the plate. Where the negative
holders of the usual type of composers are adapt-,
ed to be mounted on one side only of the main
support or carriage, it is necessary that the latter
be able to drop down below the bottom edge of the
press plate a su?icient distance to accommodate
the maximum size negative holder that may be
employed, thus increasing the over-all dimensions
of the apparatus correspondingly.
Referring next to the construction illustrated
in Figures '7, 8 and 9, the rail C there ‘shown is the
same as that illustrated in the other ?gures. The
65 adapter D4, however, is of somewhat di?erent
form and preferably comprises two end Urshaped
elements 44-—44 adapted to straddle the rail or
bar C and to be clamped thereto by set screws
45-45. Extending between the elements 44 and
pivotally connected thereto by the pivot bolts
70
_ 46-46 is a cross bar or member 41, which carries
the negative attaching screws 48—48 and register
ing dowel pins 49—49. In Figure 8, the negative
holder E4 there shown is of the type disclosed in
75
my Patent No. 1,978,493, granted Oct. 30, 1934, and
matter to be printed at an angle to the vertical
and to accomplish this, the cross bar 41 is pro
vided with a pair of adjusting screws 50—50 ex
tending therethrough and adapted to bear on the 15
upper edge of the rail C, so that, as shown in
Figure 9, by properly adjusting the screws, the
angular position of adapter and negative holder,
within reasonable limits, may be effected. Also,
on account of the swiveled connection between 20
the cross bar 4‘! and end elements M of the adapt
er, the‘ negative holder may be swung outwardly
entirely clear‘of the support A and a change of
negative holders made directly on the machine
without the necessity of removing the adapter
whenever this is desired. In this connection, the
lower line of contact between the negative and
press plate, as viewed in Figure 8, will be brought
horizontally in line with the pivotal axis of the
cross bar 41, so as to avoid scraping 'of or injury 30
to the press plate when the negative is swung in
or out.
,
Referring now to Figure 1, attention is directed
to the means provided for employing a layout
sheet to facilitate locating of the negatives. The 35
main support A at one side thereof is shown pro
vided with a dowel 55 and alined therewith at
the opposite side, a somewhat elongated slot 56.
The pin and slot 55-456 constitute a registering
means adapted to cooperate with a layout sheet 40
which may be placed bodily over the support A
and press plate B, it being understood that the
same will be extended beneath the rail C and
before the adapters and negative holders are
45
mounted on the rail. With the layout sheet,
'showing the locations of the different subject
matters to be printed, in registered positions on
the press plate, the respective negative holders
and adapters may then be mounted in place and 50
adjusted over the locations indicated, on the lay
out sheet. Thereupon, ‘the layout sheet may be
removed; the negatives placed in contact with
the press plate and the exposures made. While
the layout sheet may be bodily removed from 55
the apparatus, a convenient method of using the
same is obtained by employing a roller, such as
indicated at 51, mounted at the top of the sup
port A and to which the layout sheet may be
attached, rolled or unrolled in the manner of a 60
window shade. When in use, the layout sheet
will be drawn down over the press plate and reg
istered as previously indicated and, when the ex
posures are to be made, the same will be retracted
by rolling up on the roller 51.
,
65
In the drawings has been indicated a single
press plate B of substantially the maximum size
for which the apparatus is adapted. In certain
classes of work, particularly newspaper work, it is
frequently necessary to use relatively narrow
press plates and prepare the same practically si
multaneously on account of the speed required
in turning out an edition. In such cases, a plu
rality of narrower plates may be mounted on the
support A and the necessary exposures made on 75
4
2,129,767
each of the plates, either separately or simul
taneously, as will be obvious.
With the improved construction described, it is
apparent that the same has far greater ?exibility
and wider range of use than the ordinary vacuum
printing frame and also possesses certain fea—
tures of ?exibility over and above those of the
usual far more expensive photo-composing ma
chines. As will be apparent, the apparatus here
10 in shown and described is merely illustrative and
various changes and modi?cations may be made
without departing from the spirit of the inven
tion. All such changes and modi?cations are
contemplated, that come within the scope of
15 the claims appended hereto.
What is claimed is:
1. In a photomechanical printing apparatus, a
main ?at support for a print-receiving element;
a member adjustably mounted on said support to
20 move back and forth in a plane parallel toythe
surface of the support; a carrier adjustable back
and forth on said member in a direction at right
angles to the line of adjustment of said member
relative to the support and also in a plane par
allel to the surface of the support, said carrier
comprising means slidably directly engageable
with said member and a section angularly adjust
able relative to said means about an axis parallel
to said member.
30
2. In a photomechanical printing apparatus, a
main ?at support for a press plate or the like;
a bar movable back- and forth in one line of di
rection in a plane parallel to the surface of said
support; and an adapter, detachable with respect
35 to said bar, for carrying a printing element, said
adapter comprising elements adapted to directly
engage the bar, an attaching section pivotally
connected to said elements, and means for angu
larly bodily adjusting the adapter relative to the
40 bar in a plane parallel to the surface of said sup
port.
3. In a-photomechanical printing apparatus,
‘the combination with a ?at support for a print
receiving element, a monorail and means for ad
justing the monorail over the support in a plane
parallel thereto in one line of direction; of a
negative holding adapter attachable to and de
tachable from the monorail, said adapter having
a forked section and a. ?ange extending from the
forked section, said forked section being such as
to engage over the monorail in either of two posi
tions with the ?ange of the adapter extending
either upwardly or downwardly from the mono
rail and with the ?ange projecting over the sup 10
port; means on said ?ange for detachably re
taining a negative holder thereon; and means
for locking the adapter to ‘the monorail at any
point therealong.
4. In a photomechanical printing apparatus,
the combination with a support for a print-re
ceiving element; of a member adjustably mount
ed on said support and movable over the surface
thereof; means for adjusting said member back
and forth in one line relative to the support and 20
in a plane parallel to the surface of the support;
and a printing-element-holding adapter, said
adapter and member being of such cross sections,
in a plane perpendicular to both said member and
the surface of the support, that one provides an 25
open mouthed recess to detachably receive the
other therein, in either of two positions of said
adapter at 180° to each other relative to said
member.
5. In a photomechanical printing apparatus, 30
‘the combination with a flat support for a print
receiving element, a monorail and means for ad
justing the monorail over the support in a plane
parallel thereto in one line of direction; of a
negativenholding adapter attachable to and de 35
tachable from the monorail, said adapter having
an open mouth recessed section adapted to fit
over the monorail and thereby readily assembled
with and detached ‘from the monorail by rela
tive movement between the adapter and mono
rail in a plane perpendicular to and extending
transversely of the monorail.
WILLIAM C. HUEBNER.
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