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Патент USA US2112078

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Ma_rch 22, 1938.
2,112,078
H. N. DURHAM
PRINTING PRESS
Filed May 9_, 1935
.
A TTORNEYS.
a‘ scented ‘
UNITED STATES [PATENT OFFICE
2,112,078
PRINTING PRESS
Hobart N. Durham, Munsey Park,
t,
.N. ’Y., assignor to The Goss Printing-Press
_ Company, Chicago, 111., a corporation of Im
nois
. Application May‘9, 1935, Serial No. 20,583
21 Claims. (Cl- 270-68)
The present invention relates to printing rollers are driven at a peripheral speed slightly
presses and more particularly to a novel and im
in excess of the peripheral speed of the folding
proved rotary folding mechanism adapted for cylinder, so that when the lead end of the webs
use with high speed newspaper presses.
or sheets is stopped, the body of the webs or
Objects and advantages of the invention will sheets continues to move forward, buckles and
be set forth in part hereinafter and in part will the sheets are fed into the bite of the folding
be obvious herefrom,ior may be learned by prac
o?’ rollers which removes them from the cylinder
tice with the invention, the same being realized and moves them toward suitable delivery mecha
and attained by means of the instrumentalities nism. In order to. facilitate buckling of the
10 and combinations pointed out in the appended sheets air is introduced between the cylinder and
‘ claims.
the collected sheets at and adjacent to the pro
The invention consists in the novel parts, con
posed folding line, and in addition, the sheets are
struction, arrangements, combinations and im
preferably creased mid-way of their length, that
provements herein shown and described.
is, along the proposed fold line.
_
15
The accompanying drawing, referred to herein
It will be understood that the foregoing gen; 15
and constituting a part hereof, illustrates one eral description and the following detailed de
embodiment of the invention, and together with scription as well, are exemplary and explanatory
the description, serves to explain the principles of of the invention but are not restrictive thereof.
the invention.
20
'
The single ?gure of'the drawing is a diagram
matic sectional view of an illustrative folding
mechanism in accordance with the present inven
tion.
‘
The present invention has for its object the
provision of a novel and improved high speed ro
tary folding mechanism which is particularly
adapted for use with high speed rotary newspa
per presses. A further object of the ‘invention is
the provision of a, simpli?ed rotary. folding mech
30 anism having fewer operating parts and which
is less expensive in its construction than those
, now generally employed. Still another object 'of
‘ the invention is the provision of a high speed
rotary folding mechanism in which the tucking
35 blade, heretofore almost universally used, is ren
dered unnecessary, and which mechanism may
Referring now in detail to the illustrative em~
bodiment of the present invention, as shown in
the accompanying drawing, there is provided a
folding cylinder l0 substantially two sheet
lengths in circumference, and a closelyv adjacent
cutting cylinder H driven at the same peripheral
speed as the folding cylinder and of an integral
number of - sheet lengths in circumference.
The
longitudinally folded, and if desired slit, web or
associated webs l2 are drawn downwardly‘ by
the drawing rolls 13 so that‘ they are fed. to the
point of contact between the cylinders l0 and II,
at substantially the same speed as the peripheral
speed of these cylinders.
Cutting cylinder H is provided with a radially
projecting blade iii of conventional construction
adapted to seat within the female cutting blocks 35
"5 mounted on folding cylinder l0 and which are
operate on webs or sheets.
spaced a ‘sheet length apart as measured on the
In accordance with the illustrative embodiment
of the present invention, there is provided a. fold
circumference of the folding cylinder l0. Means
are preferably provided for introducing for main
taining air between cylinder l0 and the sheets
along and adjacent to the proposed fold line, and
said means are likewise also utilized for creasing
the sheets along the proposed fold line. Accord
ingly a blade I4’ is made to project slightly from
the periphery of cylinder l0 along the proposed
fold line, and would act by itself to hold the sheets
slightly away from the cylinder and admit the
40 ing cylinder and cooperating cutting cylinders
between which the web or associated webs is cut
into sheet lengths, and the folding cylinder is
provided with means for taking the lead end of
the web and holding it for a portion of a revolu
tion againstthe surface of the folding cylinder.
Means are provided for releasing the holding
means and for stopping the lead end of the as
sociated webs while the body of the associated air along either side thereof beneath the sheets. .
webs continues to feed in the direction of travel The mechanism is also adapted to crease the
of the cylinder. Other means are provided for sheet along the proposed fold line, and accord
holding the associated webs substantially to the ingly cylinder H is also provided with a creasing 50
shape of the folding cylinder throughout the
major portion of the length of'thesheets to be
cut therefrom and except for a small distance
adjacent to a pair of folding-off rollers. These
groove l4 to‘cooperate with creasing blade I4’
?xed to the cylinder Ill. Groove l4 and blade
W are spaced from the blade l5 and block l6
one-half sheet length.
'
55
2,112,078
2
The sheet taking means on the folding cylinder
ID, for taking the leading and of the web or as
In the operation of the illustrative embodi
ment of the invention, the associated webs l2
sociated webs, comprise axially alined series of
impaling pins i3 vcarried by arms l3 mounted on
pin shafts 20 which are rotatably iournalled in
the folding cylinder l0. At one end of each shaft
folded or slit and are fed towards the point of
cutting by means of the drawing rollers I3, the
have been printed, associated, longitudinally
speed of the webs if being substantially the same
20 is provided an arm 2| carrying cam roller 22 as the peripheral speed of the cylinders l0 and I i.
which runs in the cam track 23 of a stationary The associated webs I! are cut by cutting knife
I! and the lead end of the web is impaled by the
pin actuating cam 24, fixed to and anguiarly ad- > pins 13 immediately above the point of cutting. 10
10 Justable on the folder frame so that the timing As the folding cylinder in continues to rotate,
of the pins may be varied.
,
Means are provided for conforming the paper the lead end of the web is moved in a clockwise
to the cylindrical shape of the folding cylinders direction, the sheets are creased along the line
ill, and as embodied, comprise series of relatively where they are to be folded, and when the lead
narrow
spaced-apart sheet guides having curved end of the web is immediately below the stop 4i,
15
inner faces which are positioned concentrically cam 23 withdraws the impaling pins l8, thereby
with respect to the folding cylinder I0. Sheet freeing the lead end of the associated webs 12.
guides 30 and 3i are mounted on a supporting The portion of the webs between the stop 4i and
shaft 32 while sheet guides 33, 34, and 34' are the cutting cylinders ll continues to travel by 20
reason of the inertia of the paper, and the con
20 mounted on their supporting shafts 33 and 35'. tinued feeding of the webs by the cutting cylinder
These guides are preferably held in the position II by its pressing the webs against the folding
shown in Figure 1 during the operation of the
press by set screws or other suitable means.
Guides 33, 34, and 34' extend from a point
25 closely adjacent to the point of cutting and
between the folding cylinder in and cutting cyl
inder II to a point above folding roller 33, and
folding roller 36 is provided with circumferential
grooves to receive the ends of guides 34'. The
30 ends of guides 3| are similarly received within
circumferential grooves on the folding roller 31.
Folding rollers 36 and 31 are rotatably mounted
closely adjacent to the lower part of the fold
ing cylinder in and are yieldingly mounted and
35 resiliently urged towards' each other so as to
tightly grip and feed the folded sheets as the
sheets are folded oil from the cylinder by these
rollers. Rollers 36 and 31 are driven at a periph
eral speed slightly in excess of that of the fold
40 ing cylinder l0, and roller 33 is driven in the op
posite angular direction to cylinder ill, while
roller 31 is driven in the same angular direction
as folding cylinder i0. At the point of contact
between rollers 33 and 31 the rollers are travelling
45 in the same peripheral direction.
Means are provided for stopping the lead end
of the sheet or associated sheets at a point be
yond the folding rollers 33 and 31 and almost a
half sheet length from these rollers. For this
50 purpose, stop 4| may be mounted at the upper
ends of sheet guides 30 and is directed inwardly
towards the cylinder surface and closely adja
cent thereto, being spaced however to permit
passage of the creasing blades i4’.
Means are also provided for lifting the asso
ciated sheets from the impaling pins I 3 and for
this purpose small bifurcated ?ngers 33 overlie
the pins H, are pivoted on the cylinder and con
nected to pin arms l3 by links 33. As the pins
60 it are retracted, the ?ngers 33 are lifted pro
55
jecting the lead end of the sheets against stop 4|.
If desired, means may be provided beyond the
cutting cylinder H for forwarding the sheets
after the lead end of the sheets has been released
65 by the impaling pins l3, and for this purpose
axially alined sections of a feed roller 42 are ro
tatably mounted and yieldingly pressed towards
the surface of the folding cylinder l0, rollers 42
being positioned between the cutting cylinder Ii
70 and the-folding roller 33. The spaced guides 34
may be positioned between the several sections
of the feed roller 4!. Roller 42 is also recessed
to cooperate with creasing blades 14', is pref
erably a half page in circumference and is driven
76 at paper speed from the cylinder I3.
cylinder l0. During this time, the webs are con
fined against the surface of the folding cylinder
and held substantially concentric therewith by 25
means of the inner curved surfaces of the spaced
apart guides 30, 3|, 33, and 34.
When the lead end of the web comes to rest
against the stop 4|, the associated webs are cir
cumferentially compressed, that is, lengthwise 30
of the webs, and the webs being already creased
and in a curved form, tend to move radially of
the folding cylinder i0 under the influence of
the longitudinal inertia compression of the webs
as well as due to the centrifugal force developed
by the mass and angular movement of the webs.
This action causes the sheet to buckle exactly
at its mid-portion and transversely of the web,
as shown at 45, this buckle occurring im
mediately above the bite of the folding rollers 40
38 and 31. As the buckle 45 enlarges, the outer
surface of the webs engages the surface of fold
ing rollers 36 and 31, causing the buckle to be
fed between the rollers, thereby folding and
creasing the sheets. By properly positioning the
the stop 4i, substantially in the position shown
in Figure 1, the line of transverse fold can be
positioned accurately midway between the ends
of the sheet. Approximately at the time the line
of fold 45 is ?rmly gripped between the folding 50
rollers 36 and 31, the webs are cut by the blade
[5, thereby severing the folded sheets from the
web and forming a new lead end of the web
which is impaled by the next set of impaling pins
i3. Continued rotation of the folding rollers 36
and 31 causes the forward half of the sheet to
be reversely fed while the trailing half of the
sheet continues to feed in the same direction, and
the folded group of associated sheets is fed from
Li
the folding cylinder I0 between the folding rollers
36 and 31 and is thereby conveyed to suitable
delivery mechanism (not shown) .
-
The invention in its broader aspects is not
limited to the speci?c mechanism shown and de
scribed but departures may be made therefrom 65
within the scope of the accompanying claims
without departing from the principles of the in
vention and without sacri?cing its chief ad
vantages.
What I claim is:-
1. A high speed rotary folding mechanism in
cluding in combination a sheet carrying cylinder,
sheet taking means mounted on said cylinder, a
pair of folding-off rollers, and means-for buck
ling a plurality of sheets from said cylinder in
70
3
2,119,078
cluding a positive stop engaging the forward ends
means for projecting the sheets into
of the sheets.
said stop.
"
>
2. A high speed rotary folding mechanism in
the path of ‘
/
11. A high speed rotary folding mechanism in
cluding in combination means for cutting sheets cluding in combination a sheet carrying cylinder,
from a group of associated webs, a sheet carrying sheet taking means mounted on said cylinder, a
cylinder, a pair of folding-off rollers, sheet con ‘ pair, of folding-off rollers, means for feeding
?ning means adjacent to said cylinder, continu
sheets to said cylinder and means separate from
ously acting means for forwarding said sheets be
‘ tween said cylinder and con?ningmeans, and
10 means projectinginto the-pathway of said sheets,
folding-oil.’ rollers for stopping angular advance
of the portion of the sheets in advance of the
folding rollers and means for continuing the 10’
beyond the folding-off rollers to stop the angular
movement of that portion of the sheets on the -
movements of said sheets.
other side of the folding rollers.
3. A high speed rotary folding mechanism in
' 12. A high speed rotary folding mechanism in
Cal»
cluding in combination means for cutting sheets ' cluding in combination asheet carrying cylinder, ‘ _
15 from webs, a sheet carrying cylinder, a pair of sheet taking means mounted on said cylinder, a
16
folding-oil’ rollers, sheet con?ning means ad.1a—
cent to said cylinder, continuously acting means
for forwarding sheets between said cylinder and
con?ning means and a stop projecting into the
pathway of said sheets to stop the angular ad
vance thereof; said stops being positioned beyond
said folding-o?’ rollers.
,
‘Y
4. A high speed rotary folding mechanism in
cluding in combination means for cutting a sheet
from a web, a sheet carrying cylinder, a pair of
folding-off rollers, sheet con?ning means adja
cent to said cylinder, continuously acting means
‘for forwarding a sheet on said cylinder, and a
stop projecting into the path of the sheet beyond
the folding-on rollers to stop the angular ad
vance thereof.
5. A high speed rotary folding mechanism in
cluding in combination a sheet carrying cylinder,
a pair of folding-oil’ rollers, sheet confining means
adjacent to said cylinder, a cutting cylinder coop‘
'40
erating with the folding cylinder, a roller pressing
the sheet against the cylinder to forward the
sheet and a stop beyond the folding rollers for
arresting angular advance of a sheet.
6. A high speed rotary folding mechanism in—
cluding in combination a sheet carrying cylinder,
pair of folding-oil’ rollers, means ‘for feeding
sheets to said cylinder and means separate from
said sheet carrying cylinder and folding-oil’ roll- .
ers for stopping angular advance of ‘the portion
of the sheets in advance of the folding ‘rollers and 20
means for continuing the movement of that por
tion of the sheets on the other side of the folding
rollers.
_
,
13. A rotary folding mechanism including in
combination'a sheet carrying cylinder, sheet tak 25
ing means thereon, a pair of folding-oil’ rollers,
means for stopping the front half of a sheet or
sheets on said cylinder while the sheets are free
from said folding-off rollers to buckle the center
of the sheet and bring the buckle into the bite of 80
the folding-off rollers.
14. A rotary folding mechanism including in
combination a sheet, collecting cylinder, sheet
collecting means thereon, a pair‘of folding-off
rollers, and means for engaging and stopping the
front half of all the collected sheets to buckle
the center of the group into the bite of the fold
ing-off rollers.
15. A rotary folding mechanism including in
combination a sheet collecting cylinder, sheet 40
collecting means thereon, a pair of folding-offv
a pair of folding-o? rollers, sheet confining means , rollers, and a stop engaging the front end of all
adjacent to said cylinder, a cutting cylinder co
operating with the folding cylinder, sheet taking
means on said carrying cylinder, a roller pressing
the collected sheets to buckle the center of the
group into the bite of the folding-off rollers.
16. A rotary folding mechanism including in 45
combination a sheet carrying cylinder, folding-off
rollers, sheet con?ning means spaced from and
concentric with. said cylinder and extending from
the'sheet against the cylinder to forward the
sheet and a stop at the end‘ of' the con?ning
means for arresting angular advance of a sheet.
'7. A rotary buckling folder including in combi
said folding-off rollers toward the lead end of a
nation a folding cylinder, sheet guides concentric sheet on the cylinder and means for buckling the
therewith, folding-off rollers, a cutting cylinder, - center part of the sheet into the bite of said fold
sheet taking means on said folding cylinder, actu
ing rollers including means-for stopping the lea
ating means therefor to release the lead end of half of said sheet.
'
sheets prior to cutting at their rear end, and a
17. A rotary folding mechanism including in
sheet stop positioned less than a semi-circum
combination a sheet carrying cylinder, folding-off 55
ference of said cutting cylinder from the sheet , rollers and means for buckling the central part
cutting means.
‘
of said sheet into the bite of the folding-oif-roll
8. A high speed rotary folding mechanism in
ers comprising a stop for the front half of the
cluding in combination a sheet carrying cylinder, sheet andv means for con?ning the sheet spaced
60 ‘sheet taking means mounted on vsaid cylinder,
from said cylinder between the folding rollers‘ 60
means for creasing a sheet on said cylinder, a pair
of fold-off rollers and means for buckling a sheet
' and the head of the sheet.
’
18. A rotary folding mechanism including in
from said cylinder and folding it along the crease. combination two coacting cylinders, a web supply,
9. A rotary buckling folder including in com .impaling pins on one of said cylinders, cooperat
ing sheet cutting devices on said cylinders, means 65
bination a folding cylinder, sheet guides concen
for creasing sheets medianly and transversely, a
tric therewith, folding-oi! rollers, a cutting cylin
der, sheet taking means on the folding cylinder, pair of folding-01f rollers, sheet con?ning means
a sheet creasing blade on the folding cylinder, located in advance of said folding-off rollers, and
and a sheet stop for buckling a sheet 'along the means for stopping the forward half of sheets
upon the cylinder to buckle the crease into the 70
crease and between the rollers.
bite of the folding rollers.
' 10. A rotary folder including in combination a
- 19. A high speed rotary folding mechanism in
,_folding cylinder, sheet guides concentric there
cluding in combination a sheet carrying cylinder,
;?§if,ffold-p? rollers, sheet forwarding means, a sheet taking means mounted on said cylinder,
‘tjwtope against which the sheets are moved and . means for maintaining air between said cylinder 75
2, 12,07@ -
and a sheet thereon across a limited median part
of the sheet, a pair of folding-oi! rollers, and
means for buckling a plurality of sheets from
said cylinder. I
20. A rotary folding mechanism including in
combination a sheet carrying cylinder, sheet tak
ing means thereon, a pair oi.’ folding-oi rollers.
means for stopping the front half of a sheet or
sheets on said cylinder while the sheets are free
10 from said folding-of! rollers to buckle the center
0! the sheet and bring the buckle into the bite
of the folding-of! rollers, and means for main
taining air between the cylinder and sheet at said
buckling and iolding-o? locus.
21. In a rotary buckling folder, a folding cylin
der, folding-of! rollers, a curved stationary sheet
guide concentric with said folding. cylinder, a roll
er pressing the sheet against the cylinder to for
ward the sheet and a stop projecting into the
space between the guide and cylinder to arrest
angular advance of a sheet.
HOBART N. DURHAM.
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