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Патент USA US2112216

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March 22, 1938.
¿_ R Woon
2,112,216
PRINTING PRESS
Filed Nov. 26, 1934
10 Sheets-Shec-‘ï 1
„fiTroi/YEYS
March 22, 1938.
J. R. WOOD`
2,112,216
PRIBVJÍÍIÍNGIV PRESS
Filed Nov. 26, 1934
lO Sheets-Sheet 2
km.
JAMES f?. )fl/oop
Mm
ßTTo/e/YEYS
March 22, 1938.
J. R. WOOD
2,112-,216
PRINTING PRESS
' Filed Nov. 26, 1954
1o sheets-sheet 4
March 22, 1938.
J. R. WOOD
2,112,216 _
PRINTING PRESS
Filed Nov. 26, 1954
10 Sheetg-Sheet 5
Marßh 22, 1938.v
_1_ R, WOOD
2,112,216
PRINTING PRESS
Filed Nov. 26, 1934
10 Sheets-Sheet 6
March 22, 1938.
l
_|_ R, woon
-
'PRINTING
2,112,216
PRESS
` Filed Nov. 2e, 1934
1o sheets-sheet 7.
A1v1-m11 22, 193s.
J_ R, WOOD
2,112,216
PRINTING PRESS
' Filed NOV. 26., 1934
1o sweeps-sheet 8v
March 22, 1938.
>.1. R. woon
2,112,216
PRINTING PRESS
Filed Nov. 26, 1934
10 Sheets-Sheet 9
'
.J/WE/v me
JEWELS El h/Ooß
já», Mm «M
ßrrozß/Erö
Mardi 22, 1938»
J. R. woon
2,112,216
PRINTING PRESS
Filed Nov. 26, 1934
1Q Sheets-Sheet 10 '
.73
619
70M' Ñ
7
_ 2,112,21t
Patented Mar. 22A, 1938
(IFEM,
vsiren
gnou' to Hilar
lames R. Wood, Shelton, Conn.. Cleveiand,
milo,
.ris-Seybold-Potter Company,
a corporation of Delaware
Application November 26, 1934, Serial No. 754,833
54 Claims. (Gl. 10i-mißt?)
This invention relates ' to~ improvements in
printing `presses,iparticularly printing presses of
5
the bed and cylinder type wherein the bed recip
rocates and the cylinders move up and down to
produce the impression on the printing stroke
and to ride clear of the-bed on the return stroke.
More especially the present invention has to do
with two-color presses of the kind indicated. and
with means for rotating the cylinders and trans
spending with a portion or Fig. 4. the view being
partly in section upon line ‘l-'l or Fig. 8.
Fig. 8 is a vertical _sectional view. taken sub~
stantially on the line 8-8 of Fig. 7, showing the
impression cylinder control mechanism in normal
stantially on the line 9--9 of Fig. fi’.
Fig. l0 is a further view similar to Fiss. 8 and 9
taken substantially on the line Iß-iß of Fig. ’7.
Figs. 1l, 12 and 13 are iragmental vertical
10 ferring sheets in such manner as to provide ac
views, partly in section, showing the control
mechanism for the second color impression' cylin
der in three different stages oiaction following
curate register for the two colors.
One of the objects of the invention is the pro
vision oi’ driving mechanism wherein the gears
employed may be simple in character and well
15 adapted to produce accurate travel of the sheets
with respect to the bed and the two color forms
carried thereby.
5
running condition.
Fig. 9 is a view similar to Fig. 8, taken sub
the setting of the hand control lever to “ofi"
position.
i
.
Fig. i4 is a iront view on a larger scale of the
hand control lever and associated parts.
.
Another object oi th invention is the provision
Fig. l5 is a side view of the same.
Fig. 16 is a diagrammatic perspective view illus
trating the impression cylinder raising and low
oi novel means for raising and lowering the im» `
pression cylinders and for interrupting the up
and down movement of these cylinders and hold- . ering means.
'
ing them in their` raised position, such means in
Fig. 17 is a similar view of the control mecha
ciu'ding provision for holding either one oi' the nism which acts either automatically or by
cylinders singly in raised position while the press manual operation to disable the cylinder raising
continues to operate for the printing of sheets
and lowering means for either one or both of the
in one color.
impression cylinders.
Still another object is the provision oi novel
and eiiìcient mechanism for accomplishing the
Fig. le is a diagrammatic view from the side
oi the machine shown in Fig. 3. illustrating the
positions of the printing forms and impression u
cylinders at the time the first color` begins to
foregoing objects.
Other objects and features of novelty will ap
pear as I proceed. ith the description of those
embodiments of the invention which. for the pur
30
poses of the present application, I have illustrated
in the accompanying drawings, in which
Fig. l is a side elevation, partly diagram
matic, of a printing Vpress embodying the inVen-ì1
tion.
Fig. 2 is a pian view with certain parts broken
away to more clearly disclose a portion of the bed
40 motion mechanism.
.
Fig. 3 is a fragmental elevation of the opposite
‘ side of the press from that shown in Fig. l, and
print.
x
A
Figs. i9 and Zilare detailed views of the ‘first
and second color cylinder raising and lowering
cams respectively, these cams being shown sub»
stantially in the positions in which they appear in
Figs. il, s anelli).
Figs. 2l and 22 are detailed views of the first
and second color impression control cams respec
tively, illnstrated in the position they occupy
just prior to the beginning oi’ the disabling oi? the
first color cylinder.
disclosing particularly the raising and lowering
Fig. 23 is a iragmental detailed view illustrat
ing in an exaggerated manner the eccentric ar
means for the impression cylinders and the con
rangement of the gear upon the transfer cylinder.
r trol therefor.
Fig. 4 is a plan view of the mechanism shown in
Fig. 3, but with the impression cylinders re
moved.
Fig. 5 is an end elevational view, with vone of
50 the Oldham couplings shown in central vertical
section.
'
v
Fig. 6 is a fragmental plan view, partly in hori
zontal section upon the line G--t of Fig. 5.
55
,
Fig. '7 is a pian View on a larger scale, corre
Fig. 24 is a plan view of the cylinder gears, the
large driving gear therefor, and the transfer
gear.
'
Fig. 25 is a front view of the split gear on one
50
of the impression cylinders.
Fig. 26 is a vertical sectional view of the same,
taken substantially on the line Zt-ät of Fig. 25.
In the drawings, side members oi’v the press
frame are shown at iid. Cross frame members di
join the side members at intervals, one of such 55
2
2,112,216
cross members being Villustrated in Fig. v5. A bed
32 is mounted for reciprocation longitudinally of
one-sixth of a revolution each for reversing the
the frame, being arranged to run upon rollers 33. ' bed motion at the ends of its travel.
First color impression cylinder 34 and second
color impression cylinder 35 are arranged above
the bed, and are adapted to be raised and lowered'
for clearing or engaging the forms on the bed, as
-is usual in presses of this type. A transfer cylin
der 36 is interposed between the cylinders 34 and
35, being of a diameter nominally one-half that
of the impression cylinders.
According to the present invention the impres
sion cylinders 34 and 35 rise and fall in directions
approximately parallel to the planes of tangency
15 between these cylinders and the transfer cylinder
'I'he reversing mechanism is geared directly to
the constant speed mechanism through the mesh
ing gears 39 and 42, the shaft 43 being the crank
shaft which provides the simple harmonic motion
for decelerating; stopping and accelerating in the
opposite direction at each end of the bed stroke.
On its inner extremity therefore this‘shaft car
ries a. crank disc 55 upon which is mounted a
crank pin 56 which carries a roller 51. The axis
of `roller 51 is spaced radially from the center of'
36, but the gears 31 and 38 for the impression
cylinders revolve upon fixed axes, and a relative
lution of roller 51 corresponds in length of time
movement between the impression cylinders and with the movement past a given point of one of
the 60° spaces between the segments on wheel 40.
their gears, while maintaining the driving rela
20 tion unimpaired, is permitted by Oldham cou
The roller 51 runs in a vertical channel guide
plings, to be descri-bed hereinafter. The gears 31 53, which forms a. part of a yoke 59 that slides 20
and 38 are therefore in constant complete mesh l upon a guide bar 60 carried by the frame. 'I‘he
with their driving gear 39, which is a gear carried yoke 59 of this- scotch yoke mechanism therefore
upon the periphery of a large driving Wheel 40 makes three complete reciprocations to each revo
lution of wheel 40. There is secured to one end
mounted upon a shaft 4| which has suitable bear
ings in the frame of the press. 'I'he gear'39 also of the yoke 59 a rack V6| having teeth of relatively 25
coarse pitch which mesh with the teeth of a gear ,
62 that is keyed to a shaft 63, rotatably mounted
hub with gear 42 there is a further gear 44 with in the frame of the press, preferably directly above
30
teeth of relatively coarse pitch, with which meshes shaft 4|. This gear 62 is adapted to mesh with
a pinion 45 carried upon a short shaft 46, on the `
of aligned racks 64 30
outer extremity of which is a belt pulley 41. 'I'he
shaft 46 therefore is the power shaft, and it will be
appreciated that power may be applied to it from
any convenient source and in any convenient way.
the reversing
35
The bed motion
shaft 46 through to the racks 64 or
While the bed motion per se of the press herein tively coarse pitch teeth,
illustrated is covered in a separate application, ¿order to absorb the heavy loads put upon them
40 Serial No. 754,837, filed by me of >even date here
by the force needed to overcome the inertia of the
with, it is of importance in some oi’ the aspects bed
A more detailed description of the bed motion
of the present invention, and it will therefore be
described. The bed 32 has secured to its under and its operation will be found in my copending
surface a bed rack 48, with which a pinion 49 application previously referred to. It will there
meshes with a gear 42 which is keyed to a shaft
43 that has bearing in the frame. On the same
meshes continuously. The teeth of this rack and
pinion are of comparatively fine pitch and are
cut and finished with a high degree of accuracy.
'I'he pinion 49 is keyed to a shaft 50 which extends
forward through the frame, as viewed in Fig. 2,
50 and carries on its forward extremity a pair of
pinions 5| -and 52. The pinion 5| is adapted to
55
40, while an external gear
segment 54, also secured to the wheel 40, is adapt
ed to mesh with pinion 52. Since the segment
53 engages with the outer side of pinion 5|' and
fore be suiiicient to describe the operation here
very briefly. Assuming that the parts are in the 45
position illustrated in Figs. 1 and 2, and that the
direction of rotation of Wheel 40 is that indicated
by the arrow in Fig. 1, the bed is then at the linut
of its travel to the right. Rotation of the crank
roller 51 through the next 90° will move the rack
50
6| toward the right at an
- toward the left is begun.
When the rack 64 is
Just ready to leave the gear 62, the segment 53
begins to engage the pinion 5|, when constant
v the segment 54 engages with the inner side of
pinion 52, rotation is imparted to shaft 50 in
60 opposite directions.
The segments 53 and 54 are
arranged diametrically opposite each other, and
each segment extends through substantially 120°
of arc. there being angles of 60° between the ends
of the segments on opposite sides ‘of’ the wheel.
' The teeth of
segments 53 and 54 and the teeth
of pinions 5|
and 52 are of relatively ñne pitch,
ratios are such that a given angular
of wheel 40 in either direction pro
70. duces the same length of travel of bed 32. -Hence
the mechanism provides constant speed travel for
the bed in one direction du'ring one-third of a
revolution of wheel 40, constant speed .travel for
the bed in the other direction during another one
75 third of a revolution, and leaves two -periods of
° of arc of 60
53 leaves the
the engagement between segment 53
and pinion 5| the gear 42 made a complete revo
lution, the crank roller 51 again arriving at its
kkuppermost position». The yoke 59 is then traveling
at maximum speed, which is the same as the speed
of the bed at that time, although in the opposite
direction. 'I'he crank roller 51 now revolves
clockwise 90°, slowing the yoke travel down to
zero, and thereby slowing down the bed travel 70
correspondingly through the intermediacy of rack
6|, gear 62 and rack 65. 'I'he next 9 ° of rotation
of crank disc 55 begins the travel of yoke 59 to
Ward they left, which produces-travel of rack 65
3
2,1 rafale
cally mounted. It will be observed that when the i
and bed 32 toward the'right, thereby beginning parts are in the position of Fig. 23 the teeth of the
the travel of the latter in that direction and grad , gear at its high point are in close mesh with gear
ually accelerating -it to the speed at which it 38, while the teeth which arein mesh with gear
moves in its constant speed travel. During the
reversal of bed travel the rotation of shaft 63,
which is then idle, is also reversed by virtue of
"48'. ' The segment 64 now comes into mesh with
31 at the same time are nearly opposite to the
high point of gear 66 and therefore .near to the
low point of the gear. Hence there is a close
meshing between gears 38 and 66 and a loose
meshing between gears 31 and 66, and'gear 66
>pinion 60 on theinner side oi the latter, and
-clockwise rotation is imparted to shaft 68 at con
li)
stant speed. thereby causing the bed to travel
takes its drive from gear 38. The sheet grippers
16 for transfer cylinder 36 are arranged approxi
mately in line with the high point of eccentricity
11
the constant engagement of pinion £8 with rack
l toward the right at constant speed.
Again the
crank disc 66 makes a complete revolution with
out effect upon the bed movement, that is in the
interim between engagement of gear 62 with rack
65 and its 'engagement with rack 6d.
of the gear. Assuming that a transfer of a sheet
from grippers 14 'to grippers 16 on cylinder 3d
is being made at the instant illustrated in Fig. 23,
When the ,
constant speed travel in this direction is com
pleted, the segment M leaves its pinion 62, and
the gear 62 again comes into engagement with
it will be apparent. that very accurate positioning
of the sheet at that time is effected. In a similar
way, when a sheet is being taken from cylinder
33 by transfer cylinder 36, the grippers 14 and the
h_igh part of gear 66 will be adjacent the cylinder 20
20 rack 64. The crank roller 61 is then in its lower
most position. It turns clockwise 90° back to the
position indicated in Fig. 1, causing -the yoke 69
4to move toward the left and gradually decelerat
ing the motion of the bed in its travel toward the
34 and the gear 31, and at that time gear 66 will
be in close mesh with gear 31. Hence the gear 66
is driven by the ñrst color cylinder gear 31 when
receiving a sheet from the first color cylinder, and
by the second color cylinder gear 38 when trans
25 right until zero speed is reached, thereby com
pleting the cycle.
Drive for impression and transfer cylinders
The gearing for the impression and transfer
80 cylinders forms a closed circuit, that is to say the
impression cylinder gears 31 and 38 are .both in
mesh with driving gear 38 on one side, and are
both in mesh with the transfer cylinder gear 66
on the other side. In order that this closed cir
35 cuit train-of gears may run smoothly and accu
rately I include in thetrain adjustment means
and means for taking up back lash. Gear 38 is
a single piece gear meshing with gear 39. Gear
31 however is a split gear made up of two pieces
40 31a and 31h, illustrated somewhat in detail in
Figs. 25 and 26. The gear piece 31a meshes with
gear 39, and gear piece 31h meshes with the
transfer cylinder gear, which is indicated gen
erally by the reference number 66. The gear
45 piece 31h is a ring which is L-shape in cross sec
tion and mounted to have a slight angular ad
justment upon an annular ledge 61 forming a
ferring the sheet- to the second color cylinder.
'I'he eccentric arrangement also produces a grad
ual transfer of the drive from one gear to the
other, thereby insuring quiet running and reduc
ing wear.
,
The shafts 16 and 11 are eccentrically mounted
in bearing -sleeves 18 and 19 respectively, which
are oscillatably mounted in bearings in the oppo
site side frame members of the press. Hollow
outboard bearings 83 are attached to the forward
frame member. Upon these bearings the hub 68
of-gear 31 and the hub8i of gear 38 rotate.v These
gears therefore turn upon ñxed axes.
The Oldham couplings for gears 31 and 38 are
identical, and accordingly that for gear 38 only
will be described. A sleeve 82 is'keyed to the ex
tremity of shaft 11 within the hollow bearing
80. Clearance is maintained between the bearing
and the sleeve at all times. On its outer end the
sleeve 82 carries a plate 83 which is adjustably 45
secured by means of bolts 4and slots 8d and 85
to a driven plate 85. The latter carries at dia
metrically opposite points two anti-friction rollers
part of the gear piece 31a. The hub 6B of the
31 that extend into slots 88 ina iloating disc 88,
these slots being located 180" apart. At points 50
located along a, diameter arranged at 90" to the
tion of adjustment by studs 69 mounted in the.` diameter through slots 88 there are two other slots
gear piece 31a and extending through slots lil 98 in the floating disc which accommodate two
rollers 8i that are mounted in the gear 38. The
in gear piece 31D.
f The transfer cylinder gear 66 is also a split rollers 9i are also connected by pins 92 and coil
springs 93 with perforated bossesilél upon the
55 gear, having two gear pieces '56a and 63h (Fig. 6)
which are relatively adjustable. One of these driven plate, which latter arrangement has no
gear is also a part of the gear piece 31a. These
50 two gear pieces may be held in the desired posi-
pieces is keyed to the shaft ci transfer cylinder
effect other than as a slack take-up, or means for
36, and the other is free to turn upon the shaft
to a slight extent, coil spring 1i tending to maln
60 tain the gear pieces in an angularly displaced
keeping the rollers 81 or 8i, as the case may be,
in contact always with the' same sides of their 60
slots. The drive from the gear 38 takes p'ace by
condition, whereby back lash is absorbed. Both
way of rollers 9i fastened to the gear which ex
of these gear pieces 66a and 66h mesh with the
tend into the slots 80 of the floating plate 83.
When the impression cylinder 35 is up, as it is in
Fig. 1, and the parts are otherwise in the position
of Fig. l, the rollers 9i will be displaced from the
central positions of their slots, but they will how
ever communicate a given angular rotation of the
gear to the floating plate 89 without any change
in the angular extent of the rotation. The fìoat
ing plate 88 will in turn communicate the same
angular rotation io the rollers 81 carried by the
driven plate 86 on the forward extremity of
shaft 11. Thus, the slot and roller connections
serve to drive the cylinder 35 at the same rate 75
gear 38~ _and with the gear piece 31h. In addi
tion to the fact that gear 66 is thus made in two
65 pieces for -absorbing back lash, thegear is also
mounted so as to be slightly eccentric to the axis
of rotation of cylinder 36. The extent of the
eccentricity is but a few thousandths of an inch
and is scarcely apparent to the eye', but forv the
sake oi' illustration it has been exaggerated in
Fig. 23, where the point 12 represents the center
of rotation of the gear and of the cylinder 36 upon
which it is mounted, while the point 13 repre
sents the center of the circle of the gear. Both
of the gear pieces 66a and 66h are thus eccentri
4
2,112,216
as the gear 38, in spite oi' the’fact that the axes
of rotation of the gear and cylinder are displaced
gles, one consisting of the link |00 and that part
to some extent.
of lever |02 which is above or to the right of the
It will be observed that, by means of the
gearing arrangement described, the two impres
sion cylinders receive their driving -power from
pivot`| 04, and the other consisting of the link
|06 and the crank |08.
the gear 39 with which their gears 31 and 38
are=constantly in full mesh. Their relation is
therefore as close as it is possible to make it,
and as these. gears are all mounted to turn upon
fixed axes, they may be built to have close and
accurate meshing relationship. Furthermore, in
asmuch as the constant speed drive for the
bed is taken directly from the driving wheel .40,
which turns the impression cylinders, the op
erative relationship between the cylinders and
the bed is also close and accurate, thereby as
sisting materially in maintaining accurate reg
ister.
20
Impression cylinder movements
The bearing sleeves 18 and 19 for the impres
sion cylinder shafts extend outwardly beyond
the frame side members, where they are en
larged to form rockers 95 and 96 respectively.
The movement of these rockers in one direction
is limited by stops 91 which are adapted to en
gage adjustable stops 98 on the rockers. When
the stops 91 and 98 are in engagement the
cylinders are in their lowered or printing posi
tion. Their movement in the upward direction
- is limited by otherstops to be described here
inafter.
The rockers 95 and 98 are connected by means
of adjustable links 99 and |00 respectively with
levers |0| and |02 that are mounted for pivotal
movement about shafts or pivots |03 and |04,
the levers |0| and |02 being connected in turn
by links |05 and |06 with cranks |01 and |08
keyed to rock shafts |09 and H0 respectively.
This lever and link mechanism between the rock
ers 95 and 96 on the one hand and the rock
The rock shafts |08 and H0 are provided with
cranks H5 and H6, by means of which the shafts
are oscillated so as to move the cranks |01 and
|08 from the full line position of Fig. 3 to the
dotted line position and back again once for
each cycle of the bed, that is to say the mecha
nism maintains the impression cylinders in their 10
raised positions at all times except while the
corresponding color forms are traveling be
neath the cylinders on the printing stroke of
the bed. Fig. 18 illustrates the beginning of the
printing operation, when color form H3 is just 15
beginning its travel beneath the impression cyl
inder 34.
As soon as color form H4 begins to
travel beneath cylinder 35 the
other sheet in the second ‘color
raising of the cylinders begins
ing is completed and before the
printing of an
will begin. T'he
after the print 20
bed reaches the
end of its travel on the printing stroke.
The operating cranks H5 and H6 are swung
backand forth by reciprocating bars | |1 and | I8.
'I'he crank H5 is provided with a crank pin H9
which extends through a slot |20 formed in the
end of the bar. The pin H9 is normally latched
to the inner end of the slot by a latch bar |2|
which is pivoted upon the pin H9 and provided
with a shoulder or hook that engages over a 30
square pin |22 projecting from the side of the bar
H1. Gravity tends to maintain the latch |2| in
latching position, as illustrated in Fig. 16. It
will be apparent that when the latch |2| is in
the operative position there illustrated, the con
nection between the bar H1 and the crank pin
H9 is in effect a simple pivotal connection, and
movement of the bar H1 in either direction is
communicated to the crank H5. However, when
the latch |2| is raised, movement of bar H'l to 40
the left for the length of the slot |20 has no
effect upon the crank H5, and the reciprocation
of the bar H1 therefore no longer serves to raise
and lower the cylinder 34.
The connection between the reciprocating bar
H8 and crank H6 is similar to that above de
scribed between the bar H1 and crank H5, com
prising a crank pin |23 extending through a slot
|24 in the bar H8, and having a latch bar |24’
pivoted thereto, the latter bar having a shoul 50
shafts |09 and H0 on the other hand is located
on the outer side of the frame side members 30,
as will be apparent from Fig. 4. When the parts
are in the positions shown in Figs. 3, 8 and 16
the impression cylinders are both in their raised
positions. When the cranks |01 and |08 are
swung toward each other into the positions in
dicated by dotted lines in Fig. 3, the pivot points
H| and H2 will be raised to the dotted line
positions of that figure, lowering the shafts 16
and 11 and th'e impression cylinders carried dered portion or hook which engages a squared
thereby, in order to bring the cylinders to such pin |25 mounted in the end of bar H8. Such
differences as exist between the two sets of parts
a level that they may cooperate with the first and
are
due to the fact that cranks | |5 and | I6 move
second color forms H3 and H4 carried by the in opposite
directions.
bed of the press. When the cylinders 34 and 35
AThe bars H1 and H8 receive their motion of
are down in printing position the passage oi'
reciprocation preferably from box cams |26 and
the form thereunder places a considerable up
(il)
|21, which are keyed to a cam shaft |28. The
ward pressure upon their mountings. The links
and levers of my cylinder mechanism are so latter is driven by means of a gear |29 which
designed and arranged however that when the meshes with a pinion |30 on shaft 43.` The gear 60
cylinders are lowered to printing position the ing is such that cam shaft |28 makes one revolu
tion for each revolution of the wheel 40 and each
links 99 and |00 are in substantial alignment complete
reciprocation of the bed 32.
with the pivots | 03 and |04, as indicated in dot
Cams |26 and |21 have cam grooves |3| and l
ted lines. Hence any upward strain on the cyl
inders is delivered through the links 99 and |00 |32 therein, within which run roller followers |33
directly to the pivots |03 and |04, which are and |34 that are mounted upon arms |35 and |36
rigidly supported in the frame.
Furthermore,
when the cylinders are u'p, the links |05 and |06
are in substantial alignment with the levers |01
and |08 respectively. Hence the weight of’ the
cylinders themselves acts to hold them in the
up position. It will be observed therefore that
in this construction there are in effect two tog
These arms at their low
er ends are pivotally connected with the bars
H1 and H8 respectively. Obviously. therefore, 70
as the cams |26 and |21 turn through one revo
lution the arms |35 and |36 swing back and forth
once and produce one complete reciprocation of
> the bars H1 and H8, which produces one up and
75
2,112,216
down movement of the impression cylinders in
the regular normal operation of the machine in
-
-
5
clockwise. Ordinarily there is no such force pres
'
ent, and gravity holds hooks |51 and |58 in posi
tion to be again engaged by hooks |55 and |56 as
Disabling either impression' cylinder
soon as the high spots of the cams pass beyond
printing two colors.
CR
'
present tending to swing hook member |59 or I6!!
rollers |42 and M3.
„
‘
At times it is desirable to use the press for
I provide manually controlledl means however
printing in one color only. At other times it for exerting such a pressure upon either one of
may be desirable to inspect the work 'done in one the hook members |59 or |60, thereby-_permitting
color only while _the press isoperating upon a unhooking of the lever Iélü or iii whenthe high
two-color job, and to do this by temporarily hold
spot of the corresponding cam produces the slight
ing one of the impression cylinders in raised po
shift of the lever toward the right, as previously
sition. It is a part oi.’ my inventionto provide ` described. Each of the hook members is provided
mechanism for accomplishing these ¿results and ' with a horizontally extending arm iti' or im, in
this mechanism will now be described. '
which is mounted a pin itt or ißt extending
On the cam shaft |28 I-mount two further ` through an elongated slot in the lower extremity
cams |31 and i3d having peripheral cam. surfaces, of vertical members itt or |66, which are identi
the cam i3'i being considerably'wider thanthe cal except as to length.' At the upper end of each
cam laß for a purpose which will presently ap
of these vertical members there is a vertical slot
pear. lThe preferred contours of these cams are
it'i which receives a pin it@ that extends also
illustrated in detail in Figs. 21 and 22, where the
through the head it@ of a guide rod llt and
dot and dash' circles are included to assist the eye
through ahole in a crank i'ii. A set screw i'i2
in determining the relative heights of different
portions of the cams.I
holds the pin it@ in the crank. The guide rod
il@ is surrounded by a coil spring i12' which
i3d is a rod which is mounted in a bracket car
bears at its lower end against a block H3 having
ried by the machine frame. Upon this rod are
a hole therethrough in which the rod il@ is
pivotally mounted two similar‘V-shaped levers
respectively, which are adapted to run over the
guided. The block i‘it is provided with a thread
ed post i'iíi which extends through a hole in the
bar itil or itt, as the case may be, and receives
periphery of cams itl and itil.
To the lower
a nut i'ii‘i by means of which the block is held in
arms of levers itil and iti are connected pull
rods itt and M5 that are urged toward the right
by coil springs iii@ and it‘i respectively, thereby
tending to hold the followers in contact with
their cams. itâ is a shaft mounted in the frame
place. ii. rock shaft i'it is mounted in bearings
in the frame and extends outside of the frame,
where it is provided with a hand crank i‘i'i. Its
inner’end extends into a hole in thecrank iii, to
which it is keyed. It may be held from with
of the press. It serves as a pivotal mounting for
two oscillatable cams it@ and itt which have
drawal by a set screw i‘it.
itt and iii having roller followers M2 and itil
hubs surrounding the shaft. From these hubs ex
We will now assume that the operator desires
g to interrupt momentarily the printing of the sec
tend cranks ibi and i5? that are connected by
pivot pins with the rods ifiii and iii-5. Hence,
when the rods i465 and i465 move toward the right
from the position illustrated in Fig. 17, the cams
itil and itil swing upwardly from the positions in
which they are shown in that figure. 4These cams
are so positioned as to engage beneath rollers itis
and itil on latch levers iti and itii’, and to raise
said rollers when the. cams are actuated by the
rods lili and M5.
'
1f the rollers itt and itt were permitted to
follow their cams at all times, the cams ifi!) and
itil would be raised once for each reciprocation
of the bed, thereby throwing the latch bars iti
and iii’ out of latching position yat the proper
time to enable bars iili and i i8 to reciprocate
without moving cranks i it and lit. Means are
provided however to normally prevent the rollers
M2 and M3 from following their cams. To this
end levers il‘iiiv and iii are provided with arms
having at the ends thereof hooks ‘i55 and |55,
which are normally engaged by hooks i5'i and
i5ii on hook members i5@ and itil. These hook
members are pivotally mounted upon a rod iti
supported in the same bracket which supports
rod itt. The pivotal points for these two hook
members i59 and it@ are such that gravity gives
them a bias toward hooking position. When the
ond color. He then turns crank handle ili‘i on
vertical bar it@ from a position corresponding to
the full line or “on" position of Fig. 14 through
180° to the dotted line or “oiî” .position of that
figure, which corresponds to the full line position
oi Fig.V ll. The ñrst effect of this hand crank
movement is to depress the bar it@ sufficiently
to cause the slot in its lower end to engage the pin
itil. The next elïect is to store up energy in the
spring i12', which occurs for thev reason that pin
itt is swung around and down to a level below
that or” shaft i'it. Force is therefore exerted by
the spring i'i2’ through the block i'it tending to
depress bar it@ further. This energy is not per
mitted to swing hook member itil clockwise at
once because of the engagement between hooks
i5@ and yitt. its soon as high spot h’ of cam
itt tips lever iiii clockwise slightly, the hooks y
it@ and i5@ disengage, and the spring pressure
exerted upon the 'bar itt throws up the hook
member to the position shown in Fig. 12. Its mo
tion in this direction is limited by stop pin itil.
In Fig. 12 the roller follower iiit is running upon
.the portion i' of cam. ißt, which maintains the
lever iii in position substantially the same as
when it is hooked up. As soon as the low part, Z’
of the cam. encounters the roller follower itâ
however, as shown in Fig. i3, the lever lili is
hooks are engaged, as indicated in Fig. 17, the swung by the spring i?i'i and the rod M5 to the
levers iliii and iëii are hooked back to such an lposition'indicated in the latter figure, which
extent that they are not moved by any portions throws cam i5@ up to the position of Fig. 13 and
of the surfaces of cams itl and iZiS except the disconnects the latch bar iäíi’ from square pin
short high spots h and h' respectively. (See par
|25. This occurs at a time whenthe recipro
ticularly Figs. 21 and 22.) Hence for each revo
cating bar iik is at the left end of its travel and
lution of the cam shaft im the levers itt and iii
the cylinder is raised. .as the bar iiii moves to
receive a slight swing clockwise, not enough to ward the right the square pin i25 moves beneath
raise rollers |53 and itt, but suñficient to disen
gage hooks H55, iil‘i or |56, itâ if any force is
the latch im’ without communicating any pull
6
2,112,216
to the latch, so that the slot |24 travels over the
pin |23 and fails to swing crank ||8 to the right.
'I’he cylinder is therefore left in its elevated posi
tion. This same condition prevails upon each bed
stroke so long as the lever- |4| remains unhooked.
Now, assuming that the operator desires to re
sume the printing of the sheet in the second color,
he swings lever |11 back to the full line position
of Fig. 14, thereby relieving the spring pressure
upon pin |84. The hook member |80 then tends
to fall by gravity back to the position of Fig. 11.
It will first engage upon the top of hook |58 ho'w
‘ ever; where it
will rest until high spot'h' of cam
|38 again passes beneath rollerl |43, which will
15 shift yhook |58 far enough to permit hook |59
to fall into hooking position. Thereafter the
` rotation of cam |38 will not aifect the Vlatch bar
|24', and the up and down movement of the cyl
inder will be resumed.
f `
20
The up and down movement of the first color
impression cylinder may be disabled or inter
rupted in the same manner by the depression of
vertical bar |65., which has its own crank han
dle at a higher level than that of bar |88, as
25 shown in Fig. 3. However the Vmechanism and
method of control are practically identical with
that above described, and consequently no sepa
rate statement with respect to operation isnec
essary.
30
’
|98 which is pivotally mounted upon rod |39
between levers |40 and |4I. The lever |96 car
ries a roller follower |91 that is adapted 4to run
upon wide cam, |31. alongside roller |42, as shown
in Figs. 4 and 8. Lever |98 is `somewhat diil'er- .
ent from levers |40 and |4I, being provided with
an extra arm |98 which carries in its extremity
a pin |99 that extends beneath hook member |80
but does not normally contact with that member,
Hook member |93 carries a pin 200 which extends
beneath hook member` |59. The length of pins
|99 and 200 is of course greatly exaggerated in
the diagrammatic view of Fig.' 17, the levers and
hook members of the disabling mechanism being
positioned close together in the apparatus as
built, and as disclosed in the plan views of the
drawings. `Lever |98 is maintained under spring
pressure tending to cause roller |91 to ride _upon
its cam. This is provided by a rod 20| which is
pivotally connected with the lower end of lever 20
|98 and is urged toward the right by _a coil spring
202. The arm 203, pivotally connected with rod
20| and oscillatable .upon shaft |48, is provided
merely as a guide and support for the rod.
~
Now, in case the rod |8| is unlatched, either 25
manually or automatically, and spring |82 is
thereby permitted to exert pressure upon rod
|90 tending to shift that rod to the left, the
end of slot |9| will engage pin |92 and will exert
Raising O'r lowering both impression cylinders in ` pressure tending to disengage hooks |94 and |95.
30
Such disengagement will not occur however until
high spot h of cam |31 passes beneath roller |91.
Means are provided for interrupting the print
ing of both colors in sequence, and this means When this happens, hook member |93 is swung
sequence
‘
`
35 may be actuated either manually or automati
up, and by reason of the pin 200 it carries up
with lit Ahook member |59, which is permitted to
rise because of the disengagement of hooks |55.
cylinder raised at the end of one printing stroke ' and |51 simultaneously with the disengagement
and to hold the second color impression cylinder of hooks |94 and |95, the rollers |42 and |91
40 raised at the endof the next succeeding stroke,
passing over the same high spot h. The release
in order that the last sheet printed in the first of lever |40 permits cam |49 to swing up in re 40
sponse to the action of spring |46, and thereby
color will be completed, that is printed in the sec
l ond color, before the operation is entirely stopped. disable the first color impression cylinder. As
cally. 'I'he mechanism for this purpose is so
constructed as to hold the first color impression
The control for this mechanism comprises a
vertically' movable rod |8| (Fig. 3) to which is
soon as roller |91 is engaged by the level I of cam
|31, pin |99 engages the under side of hook mem
connected a spring |82 that tends to pull the rod
ber |80`without putting pressure upon it. But
when the roller | 91 rides down upon the level 7'
of the cam, the pin |99 puts upward pressure
on the hook member |80. During the time that
this upward pressure is effective the high spot h’
down. Means of suitable character is provided
to latch the rod |8| in its elevated position, which
position corresponds to the normal running posi
50 tion of the press. Such means may be manually
or automatically controlled, preferably either one.
The automatic control may be tripped by the
failure of a sheet to come through the sheet
feeding means (not shown) employed in con
55 nection with the press. The present invention
is not concerned with the detail of any such trip
ping means, and hence none is illustrated. How
ever, I have indicated diagrammatically in Fig. 3
a projecting arm |83 extending outwardly from
the rod 18|, supported by a trigger |84 pivoted
at |85 to any convenient support, and provided
65
with an operating arm |86. Any convenient au
' tomatic means may be used to depress arm |88
and release the trigger, or it may be depressedl
manually. The rod |9| is pivotally attached to
a crank |81 keyed to a shaft |88. A crank |89
keyed to the opposite end of shaft |88 is pivot
ally connected with a longitudinally movable rod
|90. The opposite end of rod |90 is provided
70 with a slot |9| which receives a pin |92 upon a
ldownwardly extending portion of a hook mem
ber |93, pivotally mounted upon rod | 8| between
the hook members |59 and |80. The hook mem
ber |93 is provided with a hook |94 which nor
75 mally engages a hook |95 upon an arm of a lever
4of cam |38 passes under roller |43 oi’ lever |4|
and disengages hooks |56 and |58, whereupon 50
the hook member |60 swings up out of hooking
position. The lever I4| does `not immediately
swing to raise cam |50, because its follower |43
rides upon the level i’ of cam |38 for about half
of a revolution before the low level l' permits cam
|50 to be raised and the latch arm |24’ to be
swung up. 'I'he slots at the lower ends of vertical
bars |85 and |66 permit the movement of hook
members |59 and |60 in this sequence control 00
operation.
It will be observed therefore that from the time
roller |42 rides onto the portion l of cam |31,
disabling the mechanism for accomplishing the
up and down movement of the first color im
pression cylinder, the cam shaft makes almost
one-half of a revolution before high spot h' of
cam |38 unhooks hook member |80, and that
from that time until the low level l' of cam | 38
passes under roller |43 to disable the second color
impression cylinder approximately another half
revolution of the cam shaft takes place.
Hence
the disabling of the second color impression cyl
inder occurs approximately a full revolution or
65
7
2,112,216
a full bed cycle later than the disabling of the
ñrst color impression cylinder.
`
.
sion cylinders, Oldham couplings between said Y
impression cylinders and the gears therefor, a
'
driving wheel with a. ñxed axis having a gear
Both impression cylinders being thus held in
raised position, no printing takes place in either
color. Now, when it is desired to resume printing,
meshing with both of the gears for said impres
sion cylindersfand means mounted on a single
the rod |8| is raised and the trigger |84 or its
reciprocating said bed during its constant speed
equivalent put into the latching position illus
trated in Fig. 3. The spring pressure upon rod
|90 is thereby relieved. and the hook member |93
tends to ,return by gravity to its normal latching
il)
position. ¿itV the same time it permits hook mem
ber |59 to return by gravity to a like extent.
Now, as soon as the high spot of cam |31 again
passes beneath rollers M2 and |S1 the two levers
Hill and |96 are hooked up. The hooking up of
lever lili:` relieves the upward pressure of pin le@
upon hook member |60, and when high spot h'
of cam H8 next passes beneath roller' i513 the
lever iM is hooked up. llï‘his does not however
occur until the first printing stroke of the bed
following the lowering of the first color cylinder
has been completed. in other words the ~mecha
nisrn sets itself directly after the first printing
stroke is completed, so as not to interfere there
after with the regular up and downmovement
of the second color impression cylinder. In this
way the lowering of the second color cylinder
30
40
shaft actuated >directly by said driving wheel for
travel.
‘
f
,
'.
g
’
4. In a printing press, a reciprocatingbed, two
impression cylinders cooperating with said bed, ;
gears on said impression cylinders, a driving wheel
with a fixed axis having a gear meshing with the
gears on both of said impression cylinders, a bed
rack, a driving pinion therefor, and‘meansfor
rotating said pinion at constant speed in opposite
directions at spaced intervals, comprising gear
elements rotating with said driving wheel and
angularly spaced from each other.
5. In a printing press, a reciprocating bed, two
impression cylinders cooperating with said' bed,
gears on said impression cylinders, a driving
wheel with a, fixed axis having a gear meshing
with the gears on both of said impression cyl
inders, a bed rack, a driving pinion therefor;
means for rotating said pinion at constant speed`
in opposite directions at spaced intervals, com
prising angularly spaced gear elements rotating
with said driving wheel, and cylinder throw-off
prior to the feeding of a sheet thereover is
means adapted to act upon said cylinders one at
avoided.
The sequence control of the impression cyl
a time.
6. in a printing press, a reciprocating bed, two
inders is essential only when an interruption in
the feed of sheets takes place, either accidentally
or intentionally.- When the feed of sheets is con
tinuous either cylinder singly may be held in
impression cylinders cooperating with said bed,
raised position, land lowered again at will by
lowering said cylinders during the operation of
.
Y
30
gears for each of said cylinders mounted to turn
upon ñxed axes, Gildham couplings between said
gears and said cylinders, means for raising and _.
means of the manual control means previously
the press, and> a driving wheel having a gear
described.
Adjustable stops for limiting the turning of
meshing with both of said impression cylinder
cranks H5 and H6 in the cylinder raising direc- '
gears.
7. lin a printing press, a reciprocating- bed, two 40
tion are illustrated at 201i and m5 respectively
impression cylinders cooperating with said bed,
gears for each of said cylinders mounted to turn
In the foregoing description I have necessarily upon ilxed axes encircled by said cylinders, means
gone somewhat into detail in order to explain for causing relative movement between said bed
. :fully the particular embodiments of the inven ' and cylinders toward and away from each other
tion herein illustrated, but I desire it to be
while maintaining a constant speed driving rela
understood that such detailed disclosures are not tion between said gears and impression cylinders,
to be construed as amounting to limitations, ex
and a driving wheel having a gear meshing with
cept as they may be included in the appended both of said impression cylinder gears.
8. ln a printing press, a reciprocating bed, two 50
claims.
Having thus described my invention, l claim: impression cylinders cooperating with said bed.
l. in a printing press, a reciprocating bed, two gears for each of said cylinders mounted to turn
impression cylinders cooperating with said bed, upon ñxed axes encircled by said cylinders, means
gears on said impression cylinders, a rotating ele
for causing relative movement between said bed
and cylinders toward and away from. each other
ment turning on a fixed axis having a gear mesh
ing with the gears on both of said impression while maintaining a constant speed driving rela
55
cylinders, and means mounted on a single shaft tion between said gears and impression cylinders,
a driving wheel with a fixed axis having a gear
actuated directly by said rotating element for im
'parting constant speed motion to said bed on the rneshing with both of said impression cylinder
gears, and means for reciprocating said bed com
printing stroke.
a reciprocating bed hav
prising gear sectors fixed for rotation with said
2. In a printingpress,
60
ing end reversal movements and intermediate drive wheel and including a single shaft directly
constant speed travel, two impression cylinders actuated by said sectors.
9. In a printing press, a reciprocating bed, two
cooperating with said bed, gears on said impres
sion cylinders, a driving wheel with a fixed axis impression cylinders cooperating with said bed,
having a gear meshing with the gears on both oi gears for each of said cylinders mounted to turn
upon fixed axes encircled by said cylinders, means
said impression cylinders, and means for recipro
cating said lied during its constant speed travel permitting relative movement between said bed
each of said cylinders toward and away from
comprising gear elements fixed with respect to and
each other While maintaining a constant speed
said driving wheel, and a single shaft actuated driving relation between said gears and impres
directly by said gear elements. '
sion cylinders, means for raising and lowering
3. In a printing press, a reciprocating bed said cylinders during the operation of the press,
having end reversal movements and intermediate and a driving wheel having a gear with a pitch
constant speed travel, two impression cylinders diameter twice that of the impression cylinder
cooperating with said bed, gears for said impres
in Figs. ’7 and 8.
.
' s
2,112,216
A gears and meshing with both of said impression
cylinder gears.
extending' further from the axis of rotation of
the transfer cylinder than the other portions
thereof, and sheet grippers on said transfer cyl
inder positioned substantially in a line with the
high teeth of the transfer cylinder gear.
10. In a printing p-ress, a reciprocating bed, two
impression- cylinders cooperating with said bed,
gears for each of said cylinders mounted to turn
upon fixed axes encircled by said cylinders, means
permitting 'relative movement between said bed
' 17. In a printing press, a printing cylinder -and.
and each of said cylinders toward and away from
a transfer cylinder, rintermeshing gears on said
cylinders, said transfer cylinder gear being posi
each other while maintaining the driving rela
tioned slightly eccentric tothe axis of rotation
tion between said gears and impression cylinders, , of
its cylinder.
for raising and lowering said cylinders ~
18. In a printing press, two printing cylinders,
during the operation of the press, a driving wheel
` a transfer cylinder interposed between the print
with a. fixed axis having a gear with a pitch
diameter twice „that of the impression cylinder
gears and meshing with both of said impression
cylinder gears, and means for imparting con
stant speed movement to said bed on the printing`
stroke comprising a single shaft driven directly
from said driving wheel.
30
»
15
`
11. In a printing press, a reciprocating bed,
two impression cylinders cooperating with said
bed, gears for each of’said cylinders mounted to
turn upon fixed axes encircled by said cylinders,
means permitting relative movement between
said bed and each of said cylinders toward and
away from each other while maintaining the
driving relation between said gears and impres
19. In a printing press, two printing cylinders,
a transfer cylinder interposed between the print
ing cylinders, gears on said printing cylinders, 20
sion cylinders, means for raising and lowering
positioned substantially in line with the high
25
said cylinders during the operation of the press,
point of the gear circle.
a driving Wheel with a fixed axis having a gear
20. In a printing press ofthe reciprocating bed
type, a pair vof impression cylinder members, a 30
meshing with both of said impression cylinder
gears, a bed rack, a driving pinion therefor, and
means for rotating said driving pinion at con
etant speed in opposite directions at spaced in
tervals, comprising angularly spaced gear seg
.
ments rotating with said driving wheel.
,35
12. In a printing press. a printing cylinder and ‘
a transfer cylinder, intermeshing gears on said
cylinders, said transfer cylinder gear having a
v portion of its teeth extending further from the
axis of rotation of its cylinder than other por
tions thereof.
40
13. In a printing press, two impression cyl
inders, four gears forming an operative system,
said system comprising a first gear for driving
cent on the other side.
21. _In’a printing press of the reciprocating bed
type.
said system, a second gear on one of said cyl
inders meshing with the first gear, a third gear
on the other of said cylinders meshing'with the
first gear, and a fourth gear in driven relation
50 only with respect to each of the second and third
gears of said system.
-
14. In a printing press, two impression cylin
ders, four gears forming an operative system,
said system comprising a first gear for driving
said system, a second gear on one of said cyl
inders meshing with the first gear, a third gear
on the other of said cylinders meshing with the
first geal', and a fourth gear in driven relation
to each oi” the second and third gears of. said
60
system considered vseparately during a portion of
the rotation of said fourth gear.
50
22. In a printing press of the reciprocating bed
type, a pair of. impression cylinder members, a
transfer cylinder member interposed between said
60
l5. In a printing press, two printing cylinders,
a transfer cylinder interposed between the print
ing cylinders, gears on said printing cylinders,
back lash take-up means.
23. In a printing press, two printing cylinders,
y70
both of the printing cylinder gears, said trans
75 fer cylinder
cylinder and carrying back lash
91
2,112,216
bar,ì means for producing a reciprocation of the
24. In a printing press,‘two printing cylinders,
bar for each cycle of the bed, a
pin and slot '
connection between said bar and the said raising>
and lowering means, means for normally latch
‘a transfer cylinder interposed between the print
ing cylinders, gears on said printing cylinders,
ing the pin ofv said connection to one end of the ‘
slot, means adapted to function-once during y
transfer cylinder gear being positioned slightly each bed movement cycle for momentarily dis
for hold
eccentric to the axis oi rotation of theV transferl abling said latching means, and means
cylinder and being formed in t'wo partsV with a ing4 back said disabling means to prevent its 10
resilient' back lash Atake-up connection between actuation.
31. In 'a printing vpress of the reciprocating
10 them.
press of the reciprocating bed - bed type, two impression cylinders‘means for
25. In a printing
' type, a pair of impression cylinders, a transfer raising and lowering said cylinders, a pair ofr
and a gear on said transfer cylinder meshing
with both of the printing cylinder gears, said
cylinder interposed between said impression cyl- , reciprocating bars, means for producing a recip
inders, gears for each of said impression cylin
rocation of -each- of said bars for each cycle of
ders, a driving wheel having a gear meshing with the bed, a pinand slot connection between each y
both of said impression cylinder gears, and a of said bars and the raising and lowering means
for one of said cylinders, means for normally
transfer cylinder gear meshing with said im
pression cylinder gears, said transfer cylinder latchìng the pin of each of said .connections to 20
one end of the slot, means adapted to function
gear comprising back lash take-up means.
26.
In
a
two-color
printing
press
of
the
recip
once
during each bed movement cycle for dis
20
abling said latching means throughout a portion
roeating bed type, first and second color impres
sion cylinders, >mechanism timed with the bed of thecycle, hook members for hooking up both
movements forraising and lowering said cylin-A of said disabling means to prevent their actua 25
ders, means for stopping or starting Athe up and tion, manually controlled means for operating
one of said hook members, and further means
down movement of the first and second color im
pression cylinders in successive bed cycles, and for operating both of said hook members in suc
manually controlled means for stopping or start
cessive cycles of the bed.
32. In a printing press of the reciprocating 30
ing the up and down'movement of either-cyl
inder singly during the operation of the press, _ bed type, two impression cylinders, two recip
said first named means being adapted to func
rocating bars, means for reciprocating both bars
tion upon one cylinder alone when the other once during each cycle of the bed, means for
cylinder is maintained in raised position by said raising and lowering said impression cylinders
comprisingr two rock shafts havingr cranks, a 35
manually controlled means. an impression cylin
pin and slot connection between each of said
27. In' a printing press,
lowering the impres- «
means for raising and
35 der,
sion cylinder, a reciprocating bar, means for pro
bars and one of said cranks, means for nor
ducing a reeiprocation of the bar for each cycle
of the press, an >operative connection between
said bar and said raising and lowering means,
mally latching the pin of each connection to
one end of the slot thereof, and controllable
means for disabling said latching means when 40
the cranks reach the positions corresponding to
said connection being normally vactive for rais
the raised cylinder positions.
rection and for lowering the cylinder when the
opposite direction, and means
bar moves in the
separately controlled for disabling the connec
type, two impression cylinders, two reciprocat
ing bars, means for reciprocating both bars once
during each cyclev of the bed, means for raising
tion when the bar moves in the cylinder lower
and lowering said impression cylinders compris
40 ing> the cylinder when the bar moves in one di
-
45
ing direction.
'
_
28. In a printing press of the reciprocating bed
type, an impression cylinder, a cam shaft mak
ing one revolution for each reciprocation of 'the
bed, means for raising and lowering the im
50 pression cylinder comprising an oscillating shaft,
a reciprocating bar, means including a cam on
the cam shaft for producing a complete recip
rocation of the bar for each revolution of the
cam shaft, said bar having a lost motion ‘con
Si :il 4nection with the‘oscillating shaft, means nor
mally operative
ing two rock shafts having cranks, a pin and
slot connection between each of said bars and
one of said cranks, means for normally latchlng
the pin of each connection to one end of the 50
slot thereof, and manually controlled means for
disabling either one of said latching means when
its crank reaches the position corresponding to _
the raised cylinder position.
34. In a printing press of the reciprocating
bed type, two impression cylinders, two recip
rocating bars, means for reciprocating both bars
for taking up the-lest motion _ once during each cycle of the bed, means for
in said connection, and means for disabling
said last named means, whereby the bar is per
60
33. In a printing press of the reciprocating bed
mitted to reciprocate without moving saicl oscil
lating shaft.
raising and lowering said impression cylinders
comprising two rock shafts having cranks, a
60
pin and slot connection between each of said
bars and one of said cranks, means for nor
29. In a printing press of the reciprocating bed mally iatching the pin of each connection to one
type, an impression cylinder, means for raising end of the slot thereof, and controllable means
and lowering said cylinder, a reciprocating bar, for disabling said two latching means in sequence
means for producing a reciprocation of the bar in successive cycles of the bed movement.
35. In a printing press, a cam shaft, cylinder I
for each cycle of the bed, a pin and slot con
nection between said bar and the said raising raising and lowering mechanism, a cam on said
and lowering means, means for normally latch
shaft for operating said mechanism, means for 70
disabling said mechanism comprising a second
>ing the pin of said connection to one end of
the slot, and means for disabling said latching cam on said cam shaft and a lever having a
70 means to permit reciprocation of the bar with
follower running on said last named cam, and
out actuation of said raising and lowering means. means for hooking up said lever to prevent
30. In a printing press of the reciprocating actuation of the lever by the cam.
36. In a printing press, a cam shaft, cylinder
bed type, an impression cylindei, means for rais
75
ing and lowering said cylinder, a reciprocating
10
constant speed motion to said shaft in opposite
directions at spaced intervals, and means forv re-4
15
25
30
30
35
as
40
45 the press to apply pressure
the other of said hook members.
39. In a printing press, a printing cylinder, a
.gear for driving said cylinder mounted to turn on
a fixed axis, driving connections between said gear
50
bed travel at eachend of the stroke of the latter
comprising a crank pin and a gear rotating with
said crank pin and meshing with the gear on
said driving wheel.
44. In a printing press of
55
named element and said gear.
40. In a printing press, a printing cylinder,
framing for supporting said cylinder, a gear for
60 said cylinder, a hollow cylindrical bearing for
said 'gear ñxed to said framing, said bearing be
ing supported at the end nearest said cylinder
and being unsupported at the other end, a shaft
is in lowered position for re
sistíng upward movement thereof.
45. In a printing
55
for said cylinder extending loosely through said
y
`
65 said
gear and said shaft.
_
connections between
41` In a printing press, a reciprocating bed, an
65
impression cylinder cooperating therewith, a gear
for said cylinder mounted to turn upon a ñxed
axis, a driving wheel with a fixed a'xis having a
70 gear
meshing with said cylinder gear, a bed rack,
a driving pinion therefor, a shaft upon which~
mounting of said lever when the
cylinder is in lowered position.
l
-
70
46. In a printing press, a series of three cyl
inders, sheet grippers on each of said cylinders,
intermeshing gears on said cylinders, and means
for driving both- oi' the outer cylinders, the gear
75
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