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Патент USA US2134379

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Oct. 25, 1938.
Filed April 11, 1956
5 Sheets-Sheet l
Oct. 25, 1938.
Filed April 11, 1956
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_ _ _ __.___________________
5 Sheets-Sheet 2
-OCt. 25, 193.8.
Filed April 11, l936
5 Sheets-Sheet 3
% Z751 veqg
Oct‘. 25, 1938.
Filed April ‘11, 1936
2,134,379 _
5 Sheets-Sheet 4
..g 77492!‘ 61521416177100
Oct. 25, 1938.
Filed April 11, 1956 I
5 Sheets-Sheet 5
Patented Oct. 25, 1938
' I
Ernst‘ C.‘ Sauernian, Chicago, Ill.
Application April 11, 1936, Serial No. 73,843
3 Claims. (CI. 93-73)
This invention relates to machines for pro- construction and arrangement of printing means
ducing envelopes of the type having bottom and by virtue of which either or both end flaps and/ or
side or end flaps, some or all of which are adhe-
bottom flap may be printed while the envelope
sively secured together to complete the envelope blank is passing through the machine, during
5 pocket. More especially the present invention process of formation. The printing mechanism is
is directed to improvements in or attachments constructed and arranged for performing the
for such machines for printing ‘on the back side
of the envelopes while the envelope blank is
printing operation after the end flaps and bottom
flap have been folded and adhesively secured
passing through the machine, during the process
together to complete the envelope pocket, thus
10 of formation,
For certain commercial uses various types and
making it possible to properly secure the bottom 10
flap to either 01' both 0f the end ?aps 0f the en
sizes of envelopes are desired, and for certain purposes it is desired that the back side of theen-
velope since this operation precedes the printing
operation- Because the printing operationis to
velopes be provided with printed matter, such as
tally independent of- the folding operation and
15 instructions for opening, notice for postal inspection, or other matter.
the adhesive securement of the ?aps there is no 15
possibility of the adhesive in any way vaifecting
Generally such printed matter and informa-
the character or quality of the printing on the
tion has heretofore been applied to the backs of
the envelopes by a separate operation on a print-
envelope- This invention also contemplates the
provision of. a novel construction and arrange
20 ing press, after completion of the envelope on an
envelope making machine.
This practice has
often been found unsatisfactory because of time
consumption and increase in cost of labor, and
primarily because the printing press when so
25 used is not available for use in printing the general run of work, which, on the whole, is much
more pro?table than the operation of printing
on the back of envelopes. Manifestly such delay
in production of higher paying work materially
ment whereby the Printing mechanism is ren- 20 v
dered inoperative in response to the non-feed of
an envelope blank.
Other advantages and objects of the present
invention will appear in the following descrip
tion. taken. in connection with the accompanying 2,5,
drawings in which:
Fig- 1 is a Side elevation of the rearward P01‘
‘tion of an envelope making machine, embodying
the Present invention;
30 reduces the margin of pro?t in handling higher
grade printing jobs.
There have been several attempts to solve the
foregoing problem_ For example, in the Oles‘
Patent No. 1,879,990 there is disclosed a construc-
Fig- 2- is a plan view of the rearward portion ,30
of the machine;
Fig. 3 is a transverse section through the ma
chine taken as indicated at line 3-,-3 on Fig. 1;
Fig. 4 is a section taken as indicated at, line
35 tion and arrangement for printing on one of the
4-—4 on Fig. 3; ~
end flaps of the envelope. The construction disclosed in this patent, however, has very severe
limitations in that the printed matter may be
applied only to one of the end flaps, and which
40 ?ap cannot be fully and properly adhesively se-
Fig. 5 is a fragmentary sectional view taken
at line 5-5 on Fig- 1 showing the cam’ means
for assisting in controlling the printing mech
anism, in response to. non-feed of an envelope
cured to the other ?ap or flaps for completing
the envelope pocket, due to the fact that ‘the
printing and adhesive applying mechanism are
Fig. 6 is a view similar to Fig. 3 showingthe
printing mechanism disposed in inoperative ,po
sition resulting from the non-feed of an envelope
carried on the same shaft and operate simul-
45 taneously on the envelope blank. Moreover,
Oles’ arrangement for printing and applying adhesive to the respective end ?aps is such that
there is a great possibility of obtaining imperfect
and relatively light or heavy printing due to pos-
5Q sible variation in consistency of the adhesive
which will tend to either hold the printing plate
too far from the Surface of the envelope, or ‘per’.
‘mit the plate to move too close to the surface
of the envelope.
The present invention is directed to‘ a novel
Fig. 7 is a fragmentary. section taken adjacent
One end of the shaft carryingitheprinting mech
anism, including a cam and cooperating means
by Virtue of which the printing mechanism is
Shifted to and from Operative Position; 1
Fig- 3 is a sectional View Similar to Fig, 7 shOW- v50
ins therarts adjusted in position corresponding '
to the vdisposition of printing mechanism in inop
era-?ve position, as seen in Fig. 6;
Fig.’ 9 is a fragmentary section showing the
feeler ?nger, disposed in the path of travel of I55 ,
envelope blank and which responds to the non
feed of an envelope blank, and taken as indicated
at line 9—9 on Fig. 2;
Fig. 10 is a fragmentary section of the inter
locking means controlled by the feeler ?nger;
Fig. 11 is a section similar to Fig. 10 showing
the interlocking means at position correspond
ing to non-feed of an envelope blank, and taken
as indicated at line |l—-H of Fig. 2;
Fig. 12 is a transverse section taken- as indi
cated at line I2—,l2' .on Fig. 3., shqwingithe 9am
control at a position of adjustment'at which the
The friction rollers I3 as well as the adhesive
applying blades I4, are positively driven by suit
able gearing from a main drive shaft, as seen
in Fig. 2 of the drawings, so as to continue to ad
vance the blanks through the machine in a pre
determined spaced apart relation. The blanks
are advanced from the adhesive applying blades
by reason of their contact with the resilient sur
face of a roller, disposed below said blades to a
folding mechanism indicated generally at l8.
This folding mechanism is well understood in the
printing mechanism is disposed in operative posi~ _~_ art, and is constructed so that the bottom or for
wardmost flap 5, of the blank is deflected up
wardly, and when it arrives at a predetermined
Fig. 13 is a view similar to Fig. 12 showing the: position a pair of timed spaced-apart tucker
cam control means in a position which the
printing means is disposed in inoperative posi- 7 ?ngers 20 carried on rock shaft 2! engage the
blanks, substantially at the score line de?ning
the bottom ?ap, so that as these tucker ?ngers
Fig. 14 is a plan view of the rearward-_ side of move downwardly the blank is fed between a
an envelope, having its ?aps provided with printed pair
of superimposed rolls 23, as seen in Fig. 4,
matter and produced von amachine embodying for folding the bottom ?ap '5 onto the adhesively
this invention.
~i .
of the side ?aps.2 and 3 for
The present invention is applicable to envelope coated"surfaces
completing the envelope pocket. The rolls 23
making machines of the type for. producing “let; feed‘ the partially formed envelope forwardly
25 ter style” and/or “catalog style" envelopes. By
over the bed plate .l?, into‘ engagement with a
“letter style” envelope is meant' envelopes of pair
:of spaced apart positively driven‘ friction
the type generally used for correspondence and
.25 carried on a shaft 26. Cooperating
the like, and ‘is characterized by having its end rollers
rollers 25 and disposed therebeneath as
?aps folded over against the body panel with the
seen in Fig. .4 is a positively driven roller 29, and
30 bottom ?ap adhesively'secured to one or both end
said rollers 25 and 29 feed the partially folded
?aps for completing the envelope pocket. 'The envelope
‘through another folding device (not
term’ “catalog style’? ‘envelope is‘ used in the shown) for
foldingthetop or sealing ?ap 4, down
generic sense, andis intended to- include envelopes onithelend and bottom ?aps, for completing the
For purpose of illustration I'have selected an
envelope making'machine of the type for produc
ing “letter style” envelopes as iindicated-‘atl, in
Fig. 14 which includes end ?aps 2-1and-3 and top
and bottom ?aps 4 and 5 respectively. Manifestly
envelopes of this type maybe produced so that
the bottom flap is adhesively secured to either one
or both of the end ?aps,"depending upon the
character,’ or use of the envelope’desired.
For convenience the drawings‘dis'close only the
rearward portion of'a commercial form of en—
velope making machine, embodying-the present
invention, and in which; the envelope blanks are
fed therethrough in-the direction'indicated by
the arrow in Figs. 1 and12. It is to be understood
that the envelope blank prior to passing through
the portion of the‘ machine illustrated, is ?rst
creased to form lines of fold for ‘end, top and
bottom ?aps. Then the end ?aps arefolded over
the body portion of the'blank and are fed prefer
ably centrally through the machine over a‘ bed
plate‘! 0, rigidly secured to spaced apart standards
orside frames H; The blank with the end ?aps
folded thereover is then fed to a pair of posi
tively driven friction rollers 13 which cooperate
35 with a driven roller therebeneathinot shown)
for advancing’ the blank‘v forwardly so that the
obliquely disposed'ladhe‘sive applying'blades indi
known as ‘fopen end”, ‘*‘open side”, “coupon”
and othertypes adapted to be used for advertis
ing-matter, data, containers, etciiand is vcharac
terized by'having its end?aps adhesively secured
together, and having ‘the bottom ?ap adhesively
secured to one or both of the‘ end ?aps.
- IFI'he-present invention contemplates the provi
sion of means for printing informationor data
oneither or both of the folded end ?aps '3 and 3
and/or the bottom flap 5 of the envelope, while
the blank is passing through themachine, and
this‘ operation is performed after the bottom ?ap 40
'5 is folded against the end flaps 2 and 3 so that
the printing operation is totally independent of
the adhesive applying mechanism orthe mecha
nism for folding the flaps of the envelope blank.
"I The printing means disclosed in'the drawings
includes supporting elements 32, carried on the
shaft '26 and on each element there is secured
printing plate members indicated at 33. Said
supporting members are positioned along said
‘shaft26 so that the printing plates 33, are brought
into registration with and print the folded end
flaps 2 and 3 as indicated in Fig. 14.. Desirably
the roller 29 located immediately below the shaft
26 as seen in Figs. 3 and 4 is provided with a
‘resilient or hard surface to serve as an impression 55
‘roll for the printing plates. . As is apparent, each
of the members 32 are formed as clamp members
and are each provided with clamping screws 34,
‘which permits quick. and easy detachable secure
ment thereof along said shaft 26, and therefore 60
said members 32 with their respective printing
plates may be quickly and easily removed or .re
placed or adjusted along on saidishaft, and if de
sired even an additional member 33 and printing
plate may be employed for printing on the bottom 65
?ap 15- of *said envelope blank. It will ‘also be
recognized that these printing members need not -
cated at l4, carried on the rotary shaft’ [5, en
necessarily be located in axial alinement, but may
gage and'apply‘adhesive to‘ the two forwardmost be disposed in' angular relation to each other so
diagonally extending edges of the folded over end thatthe printing on said ?aps is disposed in o?set
flaps? 2 'and 3. Manifestly if ‘desired.- only ‘one of relation. The shaft 25 and impression roll 29 are 70
the adhesiveapplying blades may be employed, interconnected by suitable gearing indicated at
and the shape ‘and'location‘of suchfblade will -35‘so:that the peripheral speed of the ‘surface of
naturally depend upon‘ the ‘shape and overlapping said rollers 25 and 29 will be the same for feeding
arrangementiof the» flaps of the envelope blank. ltheenvelopeblank therebetween while‘ the print
that‘ they‘are. relatively sensitive in' that
ing operation is‘being performed. These rollers arranged
normally held‘ in inoperative position :by
as well as rollers 23 are all driven from the same
power source as the other device previouslyde
' scribed so as to feed the envelope blanks in timed
spaced-apart relation to' the other mechanisms
of ‘the
The printing plates 33 are adapted to receive
ink from inking roller 31 which in turn is con
tacted by transfer roller 38..
Roller 40, the
10 periphery of which passes through a body of ink
passage 'of‘an envelope blank over said ?nger,
as seen'in Fig. 9, and when-a blank does not pass‘
thereover at the proper timed interval the feeler
?nger swings: upwardly ';to' the position indicated
in dotted lines ‘insFig. 9, thereby rocking thev con
trol lever 53 .in'a downward direction; The outer
end .of said lever 53 is provided with a trans
versely extending portion 53w adapted for inter
locking cooperative engagement with a lever arm
picks up a suitable quantity of ink from the 55 rigidly carried on a vertically extending rock
trough and transmits it to the surface of roller 42 shaft 56 .journalled in bearings Nb of the adja—'
which oscillates back and forth into peripheral cent side frame member vl l as seen in Fig. 1. The 15
end of said lever 55 adjacent theinterlocking end
15 contact with the respective rollers 38 and 40, while
roller 38 is shifted axially back and forth, while of the lever 53a is provided with an upstanding
in contact with the ink applying roller 31,. for projection 55a having an aperture 55b through
evenly distributing a uniform coating of ink .on which. the extreme ‘end of portion 53a'of lever
53, is adapted to be projected when the ?nger 50
the surface of said roller in va manner well under- >
is actuated by reason of the fact that no envelope 20
oscillation of rollers38 and 42 is well understood blank has been fed thereover in a proper timed
in the art, and is therefore illustrated in outline interval. . The upper. portion of said block on the
in the drawings, and a detailed description thereof side adjacent said portion 530, is provided with a
is believed unnecessary, other than to state that V-‘shaped recess 55c adapted to be engaged by
the V-shaped terminal portion 53b of said lever 25
25 said rollers are also driven in timed relation to portion‘ 53a for-‘interlocking engagement there
the rotation of the printing plates 33 carried on
with while envelope blanks are continuously
the shaft 26 by a chain drive as indicated gen
passing through the machine in proper predeter
orally at M.
Envelope blanks as they are fed through the mined spaced apart relation.‘v Connected to the . 30
machine of this type initially are mechanically lower end of the vertical rock shaft 56 is a lever
spaced apart a desired predetermined distance, arm 59 the outer end of which is provided with a
roller 69 adapted for engagementwith the face
and it is possible that said mechanism may oc
of a cammember Bl ‘mounted on a transversely
casionally become inoperative in that it may oc
casionally fail to feed a blank, thus interrupting a extending shaft 62 journalled in the side frames
I l, and which shaft is in turn driven by suitable 35
35 continuous series of spaced apart blanks. Fur
from the main drive shaft of the ma
thermore, during the passage of the envelope
chine, in timed relation to the feeding devices on
blank to the various mechanisms of such a ma
chine, it sometimes happens that a blank must the machine, so that said cam makes a complete
revolution corresponding to the interval of. time
for some reason or other be removed so as to
lapsing between adjacent envelope blanks pass‘ 40
setting the timed spaced-apart relationship of ing a predetermined pointin the machine.‘ Said
other oncoming envelope blanks. Therefore, in cam is provided with a raised portion 6la which
order to avoid functioning of certain devices on encounters the roller 60 at each revolution of the
the machine, there is provided means which is shaft 62 so as to rock the lever arm 59 in counter
responsive to the non-feed of a blank at certain clockwise direction with respect to the view seen 24.5
in Fig. 5 thereby rocking the vertically disposed v
portions in the machine, and in the present in
carried in a trough indicated generally at 41,
stance this means includes a feeler ?nger in
dicated at 50 which is registered with an aper
ture 19a in the bed plate located forwardly of
the adhesive applying mechanism. This feeler
?nger is of bifurcated formation and straddles a
roller member 5| as seen in Fig. 2 of the drawings,
_ shaft 56 which in turn rocks the lever 55 in the
same direction as the lever 59. The levers 55
and 59 are maintained at their innermost position
so that the roller 60 is yieldingly maintained in 50
contact with the surface of the cam 6| by a coil
spring 63 connected to an extension of the lever
55 and to the opposite frame member ,I l. Thus
any rocking movement of the shaft 56 by en
of the roller 60 with the high point Glut
blanks are fed in a forward direction. Feeler
?ngers of this character have heretofore been of . the cam takes place in opposition to the re
employed as above mentioned for rendering action of said spring 63. Rigidly connected to the
various devices of the machine inoperative in lever arm 55 is a rearwardly extending lever arm
response to the non-feed of an envelope blank, 65 the opposite end of which is connected by a
and in the present instance it may be understood tension spring 61 to the end of the transversely 60
that the feeler ?nger is connected to mechanism movable and substantially horizontally ‘disposed
for rendering the adhesive applying mechanism stud or pin 69 carried in ,a socket 10 mounted in
inoperative in response to non-feed of an en~ the frame ill. Said pin 69 is provided with an
velope blank over said ?nger. I contemplate enlarged portion 69a for guiding the pinv when it.
is moved. in axial direction in the socket .10. Cir
65 employing this same mechanism-controlled by, cumscribing said pin and reacting against a as’
the feeler ?nger 56, for rendering my printing
shoulder, 16a of the socket and the end of the
mechanism inoperative in response to the non
feed of an envelope blank, as will presently be enlarged portion 69a is a coil spring ‘H which
tends to oppose retraction of the pin. Mounted
on the inner end of the pin 69 is a roller 13 which 70'
The feeler ?nger 50 is mounted on a trans
70 versely extending rock shaft 52 journalled in the normally, when envelope blanks are passing in
side frames or standards II, and connected to continuous I spaced apart relation through the
one end of said rock shaft is a control lever 53. machine, is disposed in the position seen in Fig. 7
It may be understood that the feeler ?nger, rock in registration with the hub portion of a cam 16
mounted adjacent one ‘end of the shaft 26;, Said
75 shaft and control lever 53 are so constructed. and
and with which roller cooperates a superimposed
roller, and between which rollers the envelope
cam is provided with a ?anger‘lia. which normally
maintains the roller 13 in such position while
50 may move upwardly to the dotted position seen
in Fig.9. .When said ?nger swings to such posi
tionithe interlocking portion 530. of the lever 53
envelope blanks are continuouslypassing through
themachine. ' Said ?ange‘is formed with a cut
swings. downwardly ito thepositionseen in Fig. 11
away portion or notch'l?bi as seen in Fig. 12 so
so that the terminal portion 53b thereof registers
with the aperture 551) of the block 55a which
forms ;a' part of the lever; 55, and as said lever 55
returns, after passage of the high point Bla of
said cam; by. the influence .of the spring 63, it tele
scopes .over the end of the interlocking portion 10
53a of‘the lever .53, as seen in Fig. 11. Such
that when disposed in registration‘ with the-roller
13 withdrawal of the pin 69 in‘ outward direction
will cause said roller to pass through said notch
into registration with the camzsu'rfa'ce 160, as
10 seen in Fig. 8 of the drawings. Thus due to .the
contour of the cam surface 160, continued'rota
tion of shaft 26 will cause the adjacent end of
said shaft to be raised, thus lifting the printing
devices 32, 33, and said rollers 25 out of co
15 operative relation to the impression roll 29 to the
position seen in Fig. 6. This condition occurs,
however, only when there is'a breakin the con
tinuous feed of envelope blanks in ‘proper spaced
apart relation through the machine.
To permit such movement .of the shaft 26
carrying the printing devices and said rollers 25;
the ends of said shaft are carried inbearing
blocks 19 mounted in guide-ways‘ in the side
frames 1! and are normally urged downwardby
25 coil springs 80. Suitable tensioning devices in
dicated generally at 8| are ‘mounted on the re:
spective frames and permit adjustment .of the
tension on said springs 80 to a desired degree for
holding the shaft 26 in proper position. Such
30 construction manifestly permits movement of one
end of the shaft in an upward direction while
the opposite end acts more or lessv as a fulcrum.
When envelope blanks are continuously pass
ing through the machine in proper spaced apart
35 relation the feeler ?nger .50 is maintained de
pressed as seen in Fig. 9 and each time .cam 6|
rotates, which corresponds'to the timed interval
between adjacent blanks, the high‘portion Gla
of said cam rocks shaft 56 so that the block.por-‘
40 tion 55a of lever 55 is moved out of contact with
the interlocking end 53b of the lever 53, and as
soon as the high point 6| a on the cam is passed
the lever 55 returns under the in?uence’ of the
spring 63, returning the block 55 for interlocking
45 engagement with the end 53b of lever 53, as seen
in Fig. 10. As long as the envelope blanks are
passing in a continuous series the portion 530. of
the lever is maintained substantially at the posi
tion indicated in Fig. 10, and it may be under
50 stood that the action by the high point Bio of the
cam 6| takes place just prior to the passage of an
envelope blank over the feeler?nger 50. As will
be apparent, this permits the lever 55 to berocked
outwardly so that its groove 55c will be moved
55 out of contact with the V-shaped terminal por
tion 53b of the lever 53 thus allowing said lever
53 freedom of action in the event no envelope
blank registers with the feeler ?nger 50 at the
timed interval corresponding to the spaced apart
60 relationship of the blanks. Moreover, as long as
the envelope blanks are passing through the ma
chine in a continuous series, the printing mecha
nism continues to function so that the printing
plate successively registers with the. partially
65 completed envelopes at the proper timed in
-In the event that a series of‘ envelope blanks as
fed through the machine is broken for any reason
whatsoever, or for example upon completion of a
70 run of envelope blanks through the machine, the
feeler ?nger 5G is thenrendered freetoufunction
because at thetime that no venvelope blank passes
over ?nger 50, and because the. cam 6| has'just
previously rocked lever 55. outwardly releasing
75 the interlockingportion 53alof. 1ever53, the ?nger
movement of the lever .55 causes the lever arm 55
to swing outwardly tensioning spring 61 and
causing roller 13 to hug the flange 16a. of the
camv'l6 asseen in Fig. '7 of the drawings. Now 15
because there is a period of'time in travel of en
velope blanks from the feeler ?nger 50 to the
printing mechanism the means for rendering
the printing mechanism inoperative must allow
for travel of the previous blank that has passed 20
the feeler ?nger, to be printed, while insuring
that vthe printing mechanism is rendered in
operative at the time which would correspond to
the registration of an envelope blank when there
is a gap in the continuous feed of the blanks.
Therefore, it is to be understood that when the
feeler ?nger .is actuated by reason of the fact
that there is an absence of an envelope blank at
the time corresponding to the proper interval of
spaced apart relationship of the blanks, the 30
open portion 15b of the cam 16 is in the posi
tion seen in Fig. '12 so that although the lever
65 has been swung in outward direction ten
sioning the spring‘?l the roller'13 cannot engage
theoperative surface of the cam until thenotch 35
v‘l6 registers therewith,._which' will take place
upon‘rotation ofishaft 261a half revolution.
When-Said notch 16b registerstwith the roller 13
the tension inspring 61 acting on the pin 69
moves ‘the roller 13 into registration with the
cam surface 160 therebytensioning the spring ‘I 1.
During said half revolution of the shaft 26 prior
to the time that the roller 13 is moved into opera
tiveengagement .with ‘the cam surface 160, it is
to be understood that the last envelope blank
before the gap, or at the end of the series, has
been fed over the bed plate and printed in the
usual manner. Manifestly as the shaft 26 con
tinues to rotatewith the roller 13 engaging the
cam surface 160 the adjacent end of shaft 26
and bearing 19 will be moved upwardly against
the reaction of the spring 80 thereby'lifting the
printing‘devices 32, 33, and the‘ said rollers 25
out of cooperative relationship-to theimpression
roll 29 as seen in Fig. 6.
As long as no envelopes pass through the ma
chine the printing mechanism will be maintained
raised in inoperative position. The rock shaft
56, however, will continue to operate as long as
caml?l rotates thus transmitting motion to the 60
lever -65 and which because .of its spring con
nection with the pin 69 releases the tension on
‘said pin at periodic intervals corresponding to
the rotation of the cam Bl.
Just as soon as the
high spot‘ Ha of the compasses roller 60, the
shaft 56 is returned "by the spring 63 so that
roller .13 will be maintained in the position seen '1
in Fig. 8 for rendering the printing mechanism
When envelopes are
again fed
through the machine, or when the next envelope -70
‘after a break inla series passes over the ?nger 50,
said ?nger is :depressed and as the lever 55 has
been‘ already swungi outwardly, prior to registra
tion of the block-over ?nger 50, due to- theaction
of the camil rocking the shaft .56 in timed rela 75.
are fed forwardly in seriatim in predetermined
tion, the block 55a is withdrawn so that said
feeler ?nger is free for responsive action to the
passage of an envelope blank thereover. There
fore, as the envelope blank passes said feeler
?nger and depresses same it swings the portion
spaced apart relation, said. blanks being creased
53a of the lever 53 in an upward direction to the
position seen in Fig, 10 so‘ that upon return move
of the end flaps to complete the envelope pocket,
and then feeding said envelopes, in timed rela
tion with the folding and adhesively uniting
ment of the lever 55 by the spring 63 the notched
portion 550 engages the V-shaped terminal por
10 tion 53?) of the lever 53 and holds said lever 53
to provide lines of fold, and wherein the end
flaps are folded upon'the'bcdyof the blank, the
improvement which comprises folding and adhe
sively securing the bottom flap to one or both
operations, for printing on one or more of said 10
from temporary vertical movement, and which
in turn blocks complete inward movement of the
lever 55. Such blocking movement releases the
folded flaps.
tension on spring 61 at the end of the lever 55
blanks to form lines of fold for end and bottom 15
flaps, and means for folding said end ?aps, the
combination of means for adhesively securing
the bottom flap to one or both of said end flaps
15 as seen in Fig. 8 so that said roller 13 under the
2. In an envelope making machine comprising
means for feeding envelope blanks in timed
spaced apart relation, means for creasing said
in?uence of the tension of the spring 1| is urged
against the flange 16a tending to return the
roller to its normal free position. However said to complete the envelope pocket, means including
roller remains con?ned in cooperative engage
a rotatable shaft, and two axially spaced apart 20
'20 ment with the cam surface 150 corresponding to rollers carried on the shaft and positioned to
an interval representing one—half of a revolution frictionally engage the lateraledges'of the par
of the shaft 26 which corresponds to the period tially folded blanks for feeding them forwardly,
of time for feeding of an envelope blank from ' and means on said shaft for printing on one or
the feeler ?nger to the printing mechanism. more of said flaps, subsequent to the adhesive 25
Thus, after the camv 16 has been rotated to permit securement of the bottom ?ap, all of said means
registration of its notch 161) with the roller 13 for performing said operations on the blanks
said roller together with its pin 69 is projected . being operable in timed relation to each other.
inwardly by the spring ‘H to the position seen in
3. In an envelope making machine comprising
Fig. 7. The shaft 26 in such position disposes the means for feeding envelope blanks in timed 30
30 printing devices and feed rollers 25 in proper spaced ‘apart relation, means for creasing said
cooperative relation to the impression roll 29 blanks to form lines of fold for end and bottom
for printing on the partially completed envelope flaps, and means for folding said end ?aps, the
blanks as they register therewith.
combination of means for adhesively securing
Although I have shown and described my in
the bottom flap to one or both of said end flaps 35
vention in connection with a certain type of to complete the envelope pocket, means for print
envelope making machine, manifestly it is adapt
ing on one or more of. said folded flaps, subse
able by a slight alteration or modi?cation to
quent to the adhesive securement of the bottom
other types of envelope making machines, with
out departing from the spirit and scope of this
invention. I do not, therefore, wish to be under
stood as limiting my invention to the speci?c
form herein shown and described, except as indi
cated in the appended claims.
I claim as my invention:
1. In a method of producing envelopes con
taining printed matter on the back side thereof
on an envelope making machine, wherein blanks
flap, and means responsive to the non-feed of an
envelope blank for temporarily rendering said. 40
printing means inoperative, said last mentioned
means including delayed action connections for
permitting completion of the printing operation
on an aligned envelope, before rendering said
printing means inoperative.
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