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Патент USA US2125346

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Aug. 2, 1938.
I > G. G. JOHNSON ET AL
2,125,346
PRINTING APPARATUS
Filed July 1, 1957
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Aug. 2, 1938.
G. G. JCHNSON ET AL
2,125,346
PRINTING APPARATUS
Filed July 1, 1937
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Patented Aug. 2, 1938
2,125,346‘.
UNiTED STATES
PATENT OFFICE
2,125,346
PRINTING APPARATUS
Glenn G. Johnson and Raymond J. Maller,
()elwein, Iowa
'
Application July 1,‘ 1937, Serial No. 151,394
3 Claims. '(01. 101-—126)'
ing. apparatus, and particularly to thatv species
away. Fig. 8 is an enlarged cross section, with
parts in elevation, of one of the two similar oper
used for reticulated screen process printing.
An object of our improvements. is to combine
ating devices employed in resiliently returning the
side stops to extended positions above the platen,
5 with a platen a screen holder adjustab-ly hinged to
a basal frame for the platen, with means for rela
the view showing one of the stops as extended
‘ Our invention relates to improvements in print
tively adjusting the platen upon the. frame either
longitudinally or laterally, and also likewise ad
justing the platen to the screen holder.
normally above the platen, but the device shown
being shown in an inverted position toconform to
the showing thereof in said Fig. 2.
, Like numerals of reference denote like elements
Another object of our improvements is to pro
vide devices for releasably lockingv the screen
holder in a raised position.
Another object of our improvements is to- fur
This device is particularly designed for printing
sheets piled upon the platen 3 including the use of
nish a plurality of resiliently controlled disappear
15 .ing guide stops in apertured seats in the platen,
of which one stop is mounted for longitudinal
screen holder 49 mounted hingedly on the rear
10
adjustments therealong.
Another object of our improvements is to supply
manually actuable means conjointly acting to
20, lower said stop devices together while simultane
ously unlocking the raised screen holder to‘ permit
its descent toward the platen.
7
Another object of our improvements- is to pro
vide means for even adjustments of the rocker
25 ,screen holder to accommodate it to piles of stock
of different thickness.
'
' '
Other improvements will be more speci?cally
alluded to and described hereinafter.
'
As various possible embodiments might be made
30 ,of the above invention, and as various changes
might be made in the embodiment above set‘ forth,
throughout the several views.
'
,
a ?nely meshed silk or metallic wire screen 50
stretched and held tensionally and ?atly in a
part of the hollow frame i. As the invention of
this apparatus is devoted to the above use, no
other or associated devices are shown herein, ~
except as shown in the drawings and description
thereof herein.
In the main frame, the side bars I are con—
nected by end bars 38 and 39, with inner cross
bars 4 and 5, spaced below the others. The upper
or auxiliary frame 2 is mounted movably upon the
main frame, their hollows in communication.
Like cross-bars 30 and 3! in front and 35 and 36
adjusting the auxiliary frame and platen thereon
2,522.
at the rear, are secured on‘ the lower face of the
frame member 2 to project‘ laterally and are loose
on the side bars of the main frame, but seated
under clip-bars 28 and 29 in front and 32 and 31
at the rear‘. The clip-bars are longitudinal,
it is to be understood that all matter herein set bowed and held by end screws. Thus the bars 30,
forth or shown in the accompanying drawings is 3| and 35 and 36 are held by the clip-bars, but the
former may slide under the clip-bars adjustingly.
to be interpreted as illustrative and not in a limit—
The‘ platen 3is screwed at 48 at the corners of the
35. _ing sense.
Fig. l is a top plan of our printing apparatus, frame 2.
By separate but similar means the frame 2 may
with the major portions of the screen and screen
holder broken away, both represented as in a be adjusted on the base frame I longitudinally,
laterally or askew'. A threaded stem l3 with
lowered position. ‘ Fig. 2 is a bottom plan of the
40, platen with certain portions of the mechanism knurled head I 4' is seated in an interiorly threaded
bearing member i311 mounted in the forward
mounted thereon and as dissociated from other
elements thereof. Fig. 3 is a top plan of the cross-bar of the frame 2, and has at its inner end
a coned termination ending in a ball at 132 seated
frame and an auxiliary frame mounted thereon,
with the platen, screen holder and some parts of in a ?tting cavity in the forward end of a longi
tudinal arm I I having its rear part I lb bent
45 .the mechanism removed. Fig. 4 is a front eleva
tion, with some medial‘ parts broken away, of the downwardly and seated in a bearing hole H0 in
adjustable screen holder supports and certain an upwardly bowed medial part 9 of a plate I!)
screwed at 8 to the bar 1. The screw l3 may be
elements‘ of the mechanism. Fig. 5 is a side ele
vation‘ of certain portions of said supports and. used to shift theframe 2 to and fro longitudinally.
Like installations are provided on the right side
. mechanism, while Fig. 6 is an opposite side eleva
of the frame 2 near front and rear ends to adjust
‘ tion of themechanism shown in Fig. 5. Fig. 7' is
a detail elevation of one of the jointed post and it laterally or askew, to register it and the platen
3 with the screen holder above. These are shown
arm devices included in the different means for
55,;longitudinal1y, and laterally, with parts broken
a.
respectively at 20, 2|, l9, l8, and ll and [6 on the
bar 6-, at the front. At the rear the corresponding
39.1
2,125,346
2 .
elements 26, 21, 25, 24, 23 and 22 are used for
similar purposes, the plate 22 being on the bar ‘I.
In Fig. 7 is shown an alternative adjustment set,
comprising like members I411, I3, I35, Ila, IIb,
and I [la apertured at I I0, except that the univer
sal joint I2b‘ with mounting in the furcations I2a
are substituted for the said ball and socket joint.
As the transverse shaft I8 is bowed downwardly
under the longitudinal shaft II, there is no in
10 terference between them. The ?exible arrange
ments above mentioned are such, that whether
ing arm 11, and a set-screw 79a in the lower part
of the hanger l9 acts to clamp the split parts
thereof tightly upon the tube 88. As shown in
Fig. 2, the tube 88 is below the level of the platen
3, and is carried thereunder through an aperture
not shown in the rear cross-bar of the auxiliary
frame 2 as shown in full lines in Fig. 3, at 2a. ‘I5
is a depending catch-arm hung swingingly upon
the ?xed member 66, having a toothed part 8|
and swingable to at times ride on the edge of the 10
cam "I3 and drop into engagement with the notch
ball and socket joints as shown at I2 are used, - ‘I4 therein, as a locking device. The lower part
or other mechanical equivalents such as the fur
of the catch-arm 15 is connected by a coil spring
cated joint shown in Fig. 7 are employed, all of 80 to the top of the main frame I, tending to re
tain the tooth 8| in engagement with the cam 15
15 the adjustments of the frame 2 may be effected
without binding either of these assemblies, so that notch, as well as when riding upon the. cam edge,
any adjustments of the frame may be made as
desired. As none of these adjustments are of
yieldingly.
large extent, other uses of the platen connections
a longitudinal rock-shaft mounted near its oppo
site ends in apertured bearings as at 86 on the
20 or devices such as the arrangements of the dis
Referring to said Fig. 3, the numeral 85 denotes
appearingv stops 42, 44 and 46 and'their operating
main frame I, and has atrits forward end a crank
means are not interfered with.’
arm 8'! for manually rocking it. The rear end of
the shaft 85 has a crank 83 with pin seated in a
bearing hole in the bent link 82 which is con
Set-screws 33 and 34 respectively clamp diago
nally opposite clip-bars 32 and 29 to clamp re
25 leasably the lateral slide-bars 32 and 3| in any
of adjusted positions to hold the frame 2 rigid
in an adjusted position.
The screen holder 49 being mounted for vertical
adjustments at either rear corner on the main
30 frame I to the rear of the auxiliary frame 2, all
these elements as above described may be asso
ciated in relative positions as above stated for
working purposes.
Referring to Figs. 1, 4 to 6 inclusive, the screen
holder 49 is shown as adjustably mounted at op
posite rear corners.
The mountings are alike,
with base members 56—5‘I reversed in position.
The standards 56 have threaded stems 66. The
like parts 56 and 59 are spaced apart with knurled
40 nuts 58 and ‘II between them respectively, while
like nuts 6| and ‘ID are also on said stems for
locking purposes, the ?rst pair for adjusting the
bearing members 56 and ‘I2 vertically, as engaged
with faces of the bracket members 62 and 66 on
45 the upper ends of the stems 66. By these means
the screen holder may have either rear corner.
part adjusted separately as desired.
Laterally spaced bearing members 53 and 64 are
rockably mounted on the elements 62 and 66 and
50 are seated on the end parts of a shaft 63 whose
opposite ends are ?xed in the members. 62 and
66, which latter are held in desired adjustments
nected pivotally at its opposite end to the lower 25.
end of said arm ‘I5. As shown in Figs. 4., 5 and 6,
when the rock shaft 85 is normally rocked by the
action of the spring 86 connected to the hanger
"I5, and link 62 with the rear crank 83, the hanger
detent is engaged in the notch 14 of the cam ‘I3, so 30
that the furcations 5Ia and 52a with the screen
holder 49 are locked in a raised position to clear
the platen 3. When the crank arm8'I is rocked
outwardly, the above train of connections from
the shaft 85 to the hanger ‘I5 is moved in a direc 35.
tion to withdraw and unlock the detent 8| from
the cam notch ‘I4, so that the screen holder 49
drops downwardly toward the platen 3, placing
the reticulated screen 59 in parallelism therewith.
When the screen holder is manually lifted the 40
hanger part 6| rides upon the cam edge until it
engages the notch ‘I4 again, under tensional ac
tion of the spring 66, and the rock-shaft85 is
returned to its outwardly rotated position shown
in Fig. 3. By these means the screen holder may
be quickly raised and automatically locked, or
lowered by rocking outwardly the shaft crank 87,
which disengages the detent 8| from the cam
notch
‘I4.
I
I
'
Referring to Figs. 1, 2 and 8, in Fig. 1 the'platen
3 has a relatively long longitudinal slot 46 near
its left hand edge, seating therethrough a verti
by the lock-nuts 6| and 10 respectively. The cal bar stop 42 mounted for vertical movements
member 64 is kept from endwise shifting along at times to project. above the platen 3, and at
other times to disappear below the upper face of
55 the ?xed shaft 63 by means of a ring held by a
set~screw 65. The members 53 and 64 respective
the platen, to clear it. This stop 42 is mounted 55
ly (Figs, 1, 4, 5 and 6) have transverse bodies slidably vertically in edge hollows i?la in a bear
52 ?xed thereon traversed by the threaded stems ing‘ body I01 beneath and slidably mounted lon
54 having thereon the stop nuts 55, and bodies 5| ' gitudinally in a lateral slideway of spaced bars
3a mounted along the under face of the platen.
60 seat therethrough the opposite parts of the stems
54. The bodies 5| and 52 carry respectively the Fig. 8, on a larger scale, shows the bearing mem 60
opposed jaws 5Ia and 52a, which as shown in ber I61 as shown in Fig. 2 inverted.
Fig. 1 grasp the rear bar 49 of the screen holder
clampingly.
65
Referring to Figs. 1, 4, 5 and 6, the left-hand
body 52a has a forward'cam-edged projection ‘I3
with a notch ‘I4 below the cam. A rearwardly
bent arm '78 on the ?xed body 66 has a depending
swingable arm 11 pivoted at its upper end thereto,
70 and a link ‘I6 is pivotally connected to and be
tween the arm 11 and the. cam 73. A ?xed hang
er ‘I9 on the body 66 has its lower end split and
channeled to seat therethrough a corrugated
bearing tube 88 traversed by a wire 89 Whose rear
75 end is connected to the lower end of the depend
A. knurled head on a threadedstem has the
latter mounted in a plate I I4 alongside the upper.
bar of the pair 3a and this stem traverses loosely
and is held by a sleeve stop thereon. The bar I I4
has a spaced pair of arms H5 and H6, and the
slideway IO'I is connected between these arms and
carries an oppositely directed arm I0 having a
bearing aperture seating one end of a longitudinal
70
rock-shaft I63. The slideway I61 has an arm I65,
and on the shaft I03 an arm I 63a is mounted
having a terminal pin I636 passed through a slot
42a in the stop member 42 for free play therein.
On the bearing portion of the arm I93a. on a
75
3
2,125,346
squared part of the shaft I03 is a quartering arm
I06 connected by a coiled tension spring I08 to
the slideway I01.
Longitudinally spaced arms 95 and 96 are ?xed
by bolts to and between the side bars 3a in
contact with the under face of the platen 3, and
a cross connection between these arms includes
a slideway like the other slideway I01, but ?xed
instead of adjustably mounted. The platen 3 has
10 a bar stop 44 passed vertically and movably
through an aperture 43 and like that shown in
Fig. 8 inverted, an arm 99 being ?xed on the
shaft‘ I03 having a like end pin passed through
a slot in the stop 44, and a tensioning spring I09
15 is connected between the member 99 and the
lower bar 30:. The stop 42 is movable to and fro
longitudinally in the slot 40 adjustably, but the
stop 44 which is longitudinally alined with it is
not so movable. The springs I08 and I09 nor
mally act upon these stops to project their upper
parts above the upper surface of the platen 3.
There is provided a means for rocking the shaft
I03 to tension the springs which act upon the
aforesaid stops, as also a third stop 46 which is
seated through a rectangular slot 45 in the platen
3, but being a head stop thereon for the upper
ends of a pile of sheets which can be placed in
contact at one side with the said stops 42 and 44.
This third stop and its slideway is similar to that
of the others as shown in Fig. 2, hence will not
be further described.
The stop 46 is connected by means of a pin to
one end of an arm 98 whose opposite end is
pivoted to the cross-bar 96. An arm I02 is ?xed
on the rock-shaft I03 and carries a crank IIO
having a pin traversing a medial hole in the arm
98. A wire link IOI is connected between the
other end of the arm I02 and an adjacent end of a
lever SI which is pivotally medially mounted on
to the arm or lever 9|, aided by release of tension
of the springs I08 and I09, rocks the arms 42, 44
and 46 on the shaft I03, thus returning the stops
to project above the platen, the apparatus being
thus reset for the printing of another sheet on a
pile positioned thereon in contact with the stops.
We claim:
1. In a device of the character described, in
combination, a hollow basal frame, a hollow
platen frame mounted movably thereabove, a 1O
platen ?xed thereupon, supports ?xed within and
upon the basal frame, interiorly threaded bear
ings ?xed across the front and one side member
of the platen frame independently, set-screws
mounted in said bearings and having diminished 15
inner terminations, arms having socketed ends
loosely ?tting upon the inner terminations of said
set-screws respectively and rockably mounted at
their opposite ends upon said frame supports,
arms ?xed on the under faces of the forward and 20
rear parts of the platen frame to project laterally
therefrom across and upon the side parts of said
basal frame, and clips secured to the basal frame
and receiving therethrough the outwardly pro
jecting portions of the platen frame arms, 25
whereby either or all of said set-screws may be
employed to adjust the position of the platen
frame as desired upon the basal frame.
2. In a device of the character described, in
combination, a basal frame, a platen frame posi 30
tioned thereabove, threaded ?xed standards
mounted upon the rear part of the basal frame
and spaced laterally apart, said standards
having and including a ?xed U—shaped part
ing internally threaded vertically alined
bearings, screw shafts mounted through
each
hav—
end
said
bearings, nuts mounted upon said screw shafts
within said U-shaped parts, a rock-shaft between
and rockably mounted upon the top parts of said
40 a ?xed support 92 being part of the member 94.
screw shafts loosely, nuts on the screw shafts 40
The opposite end of this lever is connected to the
wire 89 which traverses the curved bearing tube
80, and whose outer end (Fig. 5) is connected
to the lower end of the depending arm 17, the
45 latter medially pivoted to the link ‘I6 which has
its opposite end pivoted to the cam member ‘I3.
movable to support the ends of the rock-shaft in
independently adjusted positions, a screen-con
taining frame above said platen, clamping arms
on said rock-shaft releasably clamped upon the
rear part of the screen-frame, and means for 45
By means of the aforesaid elements and con
nections, all three of the stops 46, 44 and 42 are
simultaneously actuated, while tensioning the
manually releasably locking said rock-shaft in
an elevated position.
3. In a device of the character described, in
combination, a basal hollow frame, a platen hol
50 springs I08 and I09 when the wire 89 is drawn
low frame mounted adjustably thereupon, a 50
in one direction the link IOI, arm I02, thus rock
ing the shaft I03 with its arms I03a and 99, and
also swinging downwardly the arm 98 to depress
55 the stop 46. The above actions are initiated,
when the above elements are set in train and
movement as the shaft 85 is rocked outwardly by
means of its crank 81 manually, its opposite crank
part of the basal frame adjustably above the
platen frame, a platen removably mounted upon
the platen frame, the platen having a slot along
side one edge thereof, and also having a trans 55
rearwardly to rock the lever 9| to oppositely pull
83 moving the connection 82 outwardly while
60 tensioning the spring 80 and swinging the arm ‘I5
also outwardly releasing the detent 8I from the
cam notch ‘I4, and the unlocked cam permitting
descent of the screen holder 49. When the screen
holder is then swung up, the cam rides over the
65 detent 8| which the tensioned spring 80 acts to
reengage the detent with the notch ‘I4, to lock
the screen holder as raised.
The returning cam
then by means of the above described connections
screen carrying frame mounted upon the rear
versely spaced pair of bearing apertures alongside
the rear edge thereof, guides traversing said slots
mounted for projection simultaneously above the
platen or for subsidence below the upper face
thereof, the guide in the side slot being also 60
mounted for movements to and fro adjustably
therealong, and manually operable mechanism
mounted on and below the platen, ?exibly sepa
rately interlinked with the guides resiliently, and
also releasably interlocked with the screen car
rying frame.
GLENN G. JOHNSON.
RAYMOND J. MALLER.
65
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