U.S. patent number 3,894,905 [Application Number 05/132,121] was granted by the patent office on 1975-07-15 for machine for making addressed and filled envelopes in a single operation.
This patent grant is currently assigned to Winkler Dunnebier Maschinenfabrik und Eisengiesserei K.G.. Invention is credited to Gunther Ehlscheid.
United States Patent |
3,894,905 |
Ehlscheid |
July 15, 1975 |
Machine for making addressed and filled envelopes in a single
operation
Abstract
A machine for producing envelopes from individual blanks or from
a paper web in a single uninterrupted passage may have the
following stations which may be arranged in different sequences: 1.
Pulling in individual blanks or a web. 2. When necessary, cutting
the web into blanks. 3. When necessary, printing the web or the
blanks. 4. When necessary, cutting a window opening. 5. When
necessary, adhesively fixing a window opening. 6. Stacking. 7.
Gumming the closing flaps. 8. Drying the gumming of the closing
flaps. 9. Individualizing from the stock. 10. Aligning the
individualized blanks. 11. Creasing the folding lines. 12. Folding
the side flaps. 13. Gumming the side flaps. 14. Folding the bottom
flap unto the gummed side flaps. Folding the closing flap, and 16.
Delivering the finished envelopes. The machine of the present
invention is particularly characterized by the provision of a
further station for applying one or more inserts which is located
in the machine upstream of the station for folding the side
flaps.
Inventors: |
Ehlscheid; Gunther (Neuwied,
DT) |
Assignee: |
Winkler Dunnebier Maschinenfabrik
und Eisengiesserei K.G. (Neuwied am Rhine, DT)
|
Family
ID: |
5768491 |
Appl.
No.: |
05/132,121 |
Filed: |
April 7, 1971 |
Foreign Application Priority Data
|
|
|
|
|
Apr 18, 1970 [DT] |
|
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2018772 |
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Current U.S.
Class: |
156/384; 101/47;
156/556; 493/222; 53/460; 101/369; 493/187 |
Current CPC
Class: |
B43M
3/04 (20130101); B41F 17/00 (20130101); B31B
2160/10 (20170801); B31B 2170/20 (20170801); Y10T
156/1744 (20150115); B31B 2150/00 (20170801) |
Current International
Class: |
B31B
41/00 (20060101); B43M 3/04 (20060101); B43M
3/00 (20060101); B41F 17/00 (20060101); B65d
027/02 () |
Field of
Search: |
;156/384,441.5,442.1,442.2,442.3,458,513,514
;93/36MM,61A,63M,93,93.3DP,62,73 ;53/21FW,31,206
;101/47,369,401.1 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Weston; Caleb
Attorney, Agent or Firm: Richards & Geier
Claims
I claim:
1. In a machine for producing envelopes from individual blanks, in
combination, means supporting a stack of blanks, means folding said
blanks, means removing said blanks individually from said stack and
feeding them to said folding means, and a device located between
said stack and said folding means for applying inserts to said
blanks, said device comprising at least one support for a stack of
inserts, rollers, at least one pivoting suction unit removing an
insert individually from the last-mentioned stack and transmitting
it to said rollers, a gumming unit, and feed belts removing an
insert individually from said rollers, applying it to said gumming
unit and then applying it to a separate blank moving upon the
third-mentioned means toward said folding means.
2. A machine in accordance with claim 1, comprising a device for
printing addresses upon blanks folded as envelopes, said device
comprising a rotary cylinder moving said envelopes, a typewriting
mechanism, means moving said envelopes from said rotary cylinder to
said typewriting mechanism, means stacking the typewritten
envelopes and means moving said envelopes from said typewriting
mechanism to said stacking means.
Description
This invention relates to a rotary machine for the production of
envelopes, flat bags or the like, referred to hereinafter as
"envelopes," and having additional stations for optionally
providing each envelope during its production with the address of
the subsequent recipient and/or for one or more insertions,
particularly printed matter or the like, to be folded into each
envelope during its production, all these operations to be
performed during a single uninterrupted passage through the machine
for the production of the envelopes.
Mass consignments of addressed letters are being increasingly
despatched by post, for example, publicity consignments of the
large mail order houses or of the recipients of lotteries. The
envelopes used to this and usually take the form of an edge
perforated strip of so-called "continuous envelopes" which are
provided with the different addresses in a separate addressing
machine and subsequently the addressed envelopes are severed from
the strip and finally the contents are inserted into the envelopes
by means of a separate filling machine. The production costs of
such mass consignments have hitherto been relatively high owing to
the cost of the "endless envelopes" which is substantially higher
than that of normal individual envelopes and because of the
transportation and wages costs of the additional operations of
addressing, severing and filling of the envelopes.
An object of the present invention is the provision of a machine of
the described type which is capable of substantially reducing the
production costs of such mass consignments.
Other objects of the present invention will become apparent in the
course of the following specification.
In the accomplishment of the objectives of the present invention it
was found desirable to provide a machine capable of producing
envelopes in a single uninterrupted passage and containing the
following separate stations, either in their entirety or
partially:
1. Pulling in of individual blanks or of a web.
2. Where necessary, cutting the web into blanks.
3. Where necessary, printing the web or the blanks.
4. Where necessary, cutting a window opening.
5. Where necessary, adhesively fixing a window section.
6. Stacking.
7. Gumming of the closing flaps.
8. Drying of the closing flap gumming.
9. Individualizing from the stack.
10. Alignment of the individualized blanks.
11. Creasing of the folding lines.
12. Folding of the side flaps.
13. Gumming of the side flaps.
14. Folding of the bottom flap onto the gummed side flaps.
15. Folding of the closing flap and
16. Delivery of the finished envelopes,
the machine being further provided at a suitable position between
the stations 1 to 16 with an additional station for applying the
different addresses onto the envelopes and having an additional
station upstream of the station 12 for applying one or more
insertions.
The stations 2 to 11 may be disposed in the machine in a sequence
different to that described hereinabove. The station 2 is provided
only in a machine adapted to produce envelopes from a web of paper
or the like.
The machine according to the present invention is suitable for the
efficient production of normal envelopes, for example according to
DIN 16 551, optionally with or without internal or external
printing and with or without a window; it is also suitable for the
production of addressed envelopes containing inserts and being of
the kind used for mass consignments, or of printed and filled
envelopes without addresses, for example for mail shot
consignments, or of addressed and unfilled envelopes, all the
operations being performed in a single, uninterrupted passage
through the machine.
A typewriting mechanism, controlled by a date support may be
provided for applying the different addresses. It is also possible
to provide a copy printing mechanism which is adapted to transfer
one of a plurality of addresses, prerecorded with an inking ribbon
on a web drawn off from a reel to be transferred individually by
the pressing of the web onto the moving, unfilled or filled
envelope. If a typewriting mechanism is disposed between the
stations 15 and 16, it is possible for the address recorded on the
previously filled envelope or some other data, possibly not visible
from the outside, to be transferred to the contents of the envelope
if either the inside of the envelope is provided at the appropriate
position with a stratum of carbon or if a piece of carbon paper is
adhesively fixed at this position. The station 5, in which sections
of transparent window material are normally adhesively fixed over
previously cut window openings, is also suitable for the adhesive
fixing of such a piece of carbon paper which is appropriately cut
off from a web.
The blanks of the envelope may also be addressed in accordance with
the present invention in that a section of a paper web drawn from a
reel and containing an address is adhesively joined over the
cut-out window opening of each blank instead of a section of window
material being adhesively fixed thereon, the web having been
pre-printed with a plurality of addresses.
The station for applying one or more inserts is appropriately
disposed between the stations 11 and 12 so that the flaps of the
envelopes can be folded around the inserts immediately after the
application thereof.
If the machine is used for the production of envelopes without
folded inserts, the closing flaps of the blanks stocked in the
station 6, will be gummed in the station 7 and the adhesive applied
to the freely exposed edges of the closing flaps will be
subsequently dried in the station 8. However, if one or more
inserts are to be folded into the envelopes produced by the machine
in the same passage of these envelopes through the machine, gumming
of the closing flaps in station 7 will be appropriately omitted. In
this case, an additional profiled gumming unit will also apply
adhesive to the closing flap in the station 13 for gumming the side
flaps which are already folded over the inserts so that the
envelope can be delivered filled and closed. In envelopes which are
to be despatched as printed matter one side flap remains completely
without adhesive fixing or is only lightly tacked with a spot of
adhesive as a so-called "dummy closure" to facilitate opening for
postal inspection.
Addressing by means of the machine according to the present
invention can also be performed for envelopes with a transparent
window in that the first insert disposed behind the window carries
the pre-printed address which is then visible through the
window.
The invention will appear more clearly from the following detailed
description when taken in connection with the accompanying drawings
showing by way of example only, preferred embodiments of the
inventive idea.
In the drawings:
FIGS. 1, 2 and 3 are continuing side views of one embodiment of a
machine according to the present invention.
FIG. 4 is a side view of the station for applying the inserts in
accordance with FIG. 3 but shown to a larger scale.
FIG. 5 is a side view of the station constructed as copy printer
for addressing finished envelopes in accordance with FIG. 2 but
shown to a larger scale.
FIG. 6 is a plan view in the direction of the arrow VI of FIG. 5
showing a piece of printed address web.
FIG. 7 is a side view of a station provided with a typewriting unit
for addressing the finished envelopes at the delivery end of the
machine.
FIG. 8 is a side view of a station equipped with a typewriting unit
for addressing the blanks in the machine prior to folding.
FIG. 9 is a plan view of an envelope blank with window and creased
folding lines.
FIG. 10 is a plan view in the direction of the arrow X in FIG. 4 of
an envelope blank with inserts applied thereto.
FIG. 11 is a plan view in the direction of the arrow XI in FIG. 7,
of finished envelopes retained between conveyor belts for
addressing with the typewriting mechanism, and
FIG. 12 is a plan view in the direction of the arrow XII in FIG. 8,
of envelope blanks, retained between conveyor belts for addressing
with a typewriting unit.
A machine for the production of envelopes from pre-cut blanks is
illustrated in FIG. 1 to 3 in purely diagrammatic form. The
principal parts of this machine comprise a pull-in feeder 1 for the
pre-cut blanks, three aniline printing units 3, 3', 3", a window
cutting station 4, a window fixing station 5, a stacking station 6,
a closing flap gumming station 7, a drying path 8, a station 9 for
individualizing the stacked blanks, a station 10 for aligning the
individualized blanks, a station 11 for creasing the subsequent
folding lines of the side flaps, bottom flap and closing flap, a
station 12 for folding the side flaps, a station 13 for gumming the
side flaps, a station 14 for folding the bottom flap, a station 15
for folding the closing flap and a station 16 for delivering the
finished envelopes. According to the present invention the machine
is provided with an additional station 17 for the application of
inserts prior to the folding of the side flaps and a station 18 for
the printing of addresses on to the envelopes which are filled with
inserts.
Without taking account of the additional stations 17 and 18, the
method of operation of the machine is as follows:
The pull-in feeder, 1 (FIG. 1) draws the lowest blank Z
individually from under the stack of blanks 19 by means of a
suction rocker and segments 21 and the blanks are conveyed to the
window cutting station 4 on the path indicated by the heavy broken
line by the printing cylinder 22, 23 and suction cylinders 24, 25,
26, rotating in the direction of the arrow; on these cylinders they
are retained in known manner by controlled suction. The interior of
the blanks is printed on the printing cylinder 22 by the printing
unit 23 which comprises an ink trough 27, a take-up roller 28, an
intermediate roller 29 and a plate cylinder 30. The outside of the
blanks is printed in two colors on the printing cylinder 23 by
identical printing units 3' and 3" with plate cylinders 30' and
30". The window cutting station 4 has a cutting cylinder 31
supporting a closed cutting knife and a stationary strip 32 of hard
metal to cut a window opening into each blank. Feed cylinders, not
shown, convey the blanks in the direction of the arrow to a suction
cylinder 33 whereon the blanks are gummed around the window opening
by a gumming cylinder 34 with a gumming profile (not shown)
provided with adhesive from a trough 35 through a take-up roller 36
and an intermediate roller 37. One section of the transparent
window material is applied through a suction cylinder 38 of the
window fixing station 5 onto the blank window opening the periphery
of which is gummed; this window material is drawn off as a web,
shown as a heavy broken line through a pair of feed cylinders 39,
40 from a supply reel 41, and cut off by a rotary guillotine
indicated by the numeral 42, is taken over by the suction cylinder
38, accelerated and then applied to the blank which is retained on
the suction cylinder 33. If two window openings are cut into each
blank in the station 4, a second window section for the second
window opening will be supplied from a second supply reel 41' to
the suction cylinder 38. The cuts with windows are then transferred
through suction disc 43, 44 into the stacking station 6 between
whose rollers 45, 46, rotating at a substantially lower
circumferential speed, and the subsequently disposed belts (not
shown) they are stacked in such a way as to expose only the closing
flap edges to be gummed in the next station 7. A gumming roller 47
applies to these edges adhesive obtained from a trough 48 through a
take-up cylinder 49 and an intermediate cylinder 50 if envelopes
are being produced having a closing flap which is subsequently
adhesively joined by moistening.
While being retained between pairs of roller chains (not shown),
the blanks subsequently run in stacked position on the path shown
as a heavy line through the drying section 8 disposed below the
machine and then upwardly to the station 9 for individualizing
(FIG. 3), each leading blank being pulled out from the stack by
segments 53 and mating rollers 54 which operate at a substantially
higher speed, so that these blanks are transferred for alignment to
the station 10. The station 10 is provided with a pair of roller
chains 55 and pins 56, operating in the direction of the arrow,
said pins gripping behind the corner cuts 194 (FIG. 9) of the
individual blanks to convey the blanks in a precisely aligned
position into the station 11 for creasing. The station 11 is
provided with a cross-creasing cylinder 57, having two rectilinear
creasing knives (not shown) and a mating cylinder and two
longitudinal creasing rollers 59, having circular creasing knives
(not shown) and mating rollers 60. The creased blanks are then
individually and successively conveyed under the station 17, which
will be described later on, and for the application of inserts into
the side flap folding station 12 (FIG. 2) in which station there
are folding loops 63 for upward folding of the side flaps 190 of
the blanks, the folding taking place where appropriate over inserts
previously applied in the station 17. In the next station 13, a
profiled gum applicator, indicated by the numeral 64 and associated
with a gumming mechanism of the kind already described applies
adhesive onto the folded side flaps for adhesively joining them to
the bottom flap 191. In the next folding station 14, the bottom
flap 191, which leads in the feed direction, is gripped closely
behind its leading edge by a suction cylinder 68 and entrained
upwardly to an extent enabling it to be folded to the rear between
downstream disposed rollers 69, 70 and to be thrust onto the gummed
side flaps. In the adjoining folding station 15, the folded part of
the envelope is guided upwardly by a suction cylinder 73 until it
meets a stop abutment of a folding pocket indicated by the numeral
74, is then gripped by a suction cylinder 75 immediately behind the
creasing line 192' of its closing flap 192 and is transferred to a
downstream disposed suction cylinder 77 under a roller 76 while the
closing flap is folded. The completely folded envelopes B are then
individually and successively inserted by suction cylinders 78, 79
into separate slits 80 of delivery discs 81 of the delivery station
16 and are deposited in the form of an upright stack 84 in front of
a loose fence 83 on a delivery table 82.
One example of an envelope blank Z with an adhesively fixed window
as processed in the above-described machine is illustrated in FIG.
9. The blank has two side flaps 190, one bottom flap 191, leading
in the feed direction through the machine as indicated by the
arrow, and a closing flap 192, two corner cut-outs 194, which trail
in the feed direction and two leading corner cut-outs 195. The
indicated creasing lines 190', 191', 192' for the subsequent
folding of the flaps 190, 191, 192 extend through the four corners
of the corner cut-outs and enclose the middle section 193. The
blank, with the side which will later be the interior of the
envelope facing upwards, passes through the stations 4, 5 and 9 to
14 of the machine. The blank has a window opening 196 and a
transparent window section 197, shown only partially and adhesively
joined on the perimeter to the middle part 193. The adhesive
applied to the closing flap is indicated by the numeral 198 and the
adhesive applied to the side flaps only after folding thereof is
indicated by the numeral 199.
The station 17 for applying inserts (FIGS. 3 and 4) contains two
known pull-in feeders, similar to the pull-in feeder 1 of the
machine, and adapted to support on plates 91, 91' stacks 92, 92' of
printed matter or similar inserts 90, 90' which are aligned between
stop fences 93, 93'. A roller 94 and pull-in segments 95 with
suction holes (not shown) are disposed below the plate 91, the
roller and segments rotating in the direction of the arrow. That
part of the stack 92 which projects beyond the plate 91 is
supported by stack supports 96 which pivot in rhythm of the
rotating pull-in segments 95 and which are associated with suction
elements 97, pivoting at the same rhythm. Identical parts of the
second pull-in feeder are designated with numerals 94' to 97'. A
suction cylinder 98 is disposed downstream of the pull-in segments
95. A suction cylinder 99 is disposed at a distance from the
suction cylinder 98 and the pull-in segments 95', this distance
being adequate to permit the passage of the inserts. The
circumferential velocity of the parts 95, 95', 98 and 99, which
rotate in the direction of the arrow is equal to the feed velocity
of the blanks below the station 17. Two feed belts 102 are
tensioned over the suction cylinder 99 and the reversing pulleys
100, 101. Two feed belts 103 are tensioned over the suction
cylinder 98 and reversing pulleys 104, 105 and are also adapted to
pass around a part of the suction cylinder 99 or around the
conveying belts tensioned around the suction cylinder.
A plurality of feed rollers 106 is provided below the feed path for
the blanks below the station 17, a broad feed belt 108 running over
the feed rollers and being tensioned by a jockey roller 109.
Pressure rollers 107 thrust the upper feed belts 102 against the
lower feed belt 108 or against the feed rollers 106 which support
this feed belt.
A gumming unit 110, provided with spot-shaped gumming profiles (not
shown) and supplied with adhesive from a trough 111 through a
take-up roller 112 and an intermediate roller 113, is provided for
the application of adhesive spots which may be desired on that side
of the lowest insert which is later disposed on the blank.
The station 17 operates as follows:
The pivoting suction units 97, 97' draw the lowest insert of the
stacks 92, 92' downwardly into the zone of the pull-in segments 95,
95' which pull-out the blanks completely from under the stack by
co-operation with the rollers 94, 94', retain the blanks with
suction and transfer them to the downstream disposed suction
cylinder 98 or 99, respectively, so that the suction cylinder 98 is
provided with an insert from the stack 92 and the suction cylinder
99 is provided with an insert from the stack 92' and both inserts,
being positioned superjacently, are transferred between the feed
belts 102 and 103 between which they are guided past the gumming
unit 110, which, where appropriate, applies spots of adhesive onto
the outer insert. These inserts are applied to a blank which
arrives at the same velocity on the feed rollers 106, accurately
between the creasing lines 190', 191', 192' of the flaps of this
blank (FIG. 10). The blank, together with the inserts disposed
thereon is retained between the lower feed belt 108 and the upper
feed belts 102 and is thus conveyed into the station 12 for folding
the side flaps. The side flaps 190, bottom flap 191 and closing
flap 192 are folded in the above-described manner and are
adhesively joined in the stations 12 to 15.
The station 18 for printing the different addresses 122 onto the
finished and filled envelopes B is associated with the suction
cylinder 78 (FIGS. 2 and 5) and is constructed as a copy printing
unit. It contains a supply reel 119 of the address web 120 (FIG. 6)
with edge perforations 121 on which the different addresses 122 are
printed in mirror image and at a pitch t with ink adapted to
produce an image under pressure, a pair of feed rollers 124, 125, a
storage box 126, preferably transparent, with a reversing roller
127 and a microswitch 128 with a lightly spring-loaded sensing
element 129, a printing roller 130 with a slightly projecting
printing segment 131, a periodically driven spike wheel 132 with
mating wheel 133, a reversing roller 134, a self-aligning roller
136, supported on pivotable arms 135 and a take-up reel 137. All
these parts of the copy printing unit move in the sense of the
arrows shown in the drawings. The feed rollers 124, 125 and the
take-up roller 137 are driven intermittently through magnetic
clutches (not shown).
In order to obtain a low speed for the envelopes for addressing, a
pair of belts 141, tensioned over reversing rollers 142, 143, 144
and adapted to retain the envelopes without any substantial space
on the circumference of the cylinder 78, is associated with the
suction cylinder 78, which in this case operates without suction
air.
The copy printing unit operates as follows:
The feed rollers 124, 125, acting on the unprinted sides of the
address web 120, convey the web 120, drawn off from the supply reel
119, into the supply box 126 where it forms loops 123 and operates
the microswitch 128 through the sensing lever 129 when the supply
box has reached a certain level of filling, said microswitch
switching off the magnetic clutch of the feed rollers 124, 125. The
printing segment 131, rotating continuously at the feed rate of the
envelopes, and whose effective surface development is equal to the
pitch t of the addresses 122 on the web 120, thrusts a colored
image producing address during each rotation against an envelope
arriving on the cylinder 78 and transfers the address to the
envelope. The periodically driven pair of spiked rollers 132,
adapted to engage in the edge perforations 121 of the web 120 also
moves during this printing operation and draws the web 120 forward
by an amount equal to the pitch t and then stops so that the next
address on the web will be disposed in the correct position for
printing the next envelope and so on. The web drawn forward by the
pair of spiked wheels 132 is coiled by the self-aligning roller 136
onto the reel 137 which is driven by a magnetic clutch which is
switched on by a microswitch (not shown) when the arms 135 are in
the lowest position and is switched off in the upper position 135'
of the arms.
The last end of the address web 120 pulled off from the supply reel
119 is preferably provided with one or more perforations of
substantial size instead of addresses in order to stop the machine
through a mechanical sensing element or a photocell as soon as the
last addresses have been printed and a new address web may have to
be inserted.
FIG. 7 shows an embodiment with a station, designated with the
numeral 118 and intended for addressing the finished filled
envelopes with a typewriter mechanism which is controlled by a data
support, for example a punched tape or a computer. This mechanism
is disposed between the suction cylinder 79 and the delivery discs
81. The principal parts comprise a suction cylinder 151, a pair of
edge-perforated feed belts 155, driven by spiked wheels 154 and
tensioned over a curved plate 152 and reversing rollers 153, a pair
of edge-perforated feed belts 157, also driven by the spiked wheels
154 and tensioned over reversing rollers 156 and the actual
typewriting mechanism 155 which may be constructed in different
commercial form, for example, with a type cylinder 159 and strikers
160 disposed opposite thereto. As shown in FIG. 11, the sides of
the envelopes B are retained between the unperforated part of the
feed belts 155, 157. The spacing of the spiked wheels 154 engaging
in the edge perforation 167 of the feed belt pairs on the one hand
and the feed belt pairs 155, 157 on the other hand is adjustable in
accordance with the size of the envelopes B. The envelopes which
arrive individually and successively by the suction cylinder 78, 79
are taken over by the suction cylinder 151 and are conveyed between
guides (not shown) into the feed belt pairs 155, 157 the operating
speed of which is so slow that the envelopes B, retained between
the feed belts, follow without any space between them and their
address field 168 is disposed in the correct position relatively to
the typewriter mechanism 158.
The delivery end of the feed belt pairs 155, 157 is followed by
feed belt pairs 161, 162 which are tensioned over reversing rollers
163 or 164 respectively and are driven at a speed so that the
envelopes taken over from the feed belt pairs 155, 157 can be
individually inserted into individual slots 80 of the delivery
discs 81 which deposit the addressed envelopes upright as a stack
165 in front of the loose stop fence 83 on the delivery table 82.
The distance between rollers 166, which press resiliently against
the lower end of the feed belt pair 161, and the delivery discs 81
is adjustable in accordance with the height of the envelopes being
processed.
A station constructed as a typewriter mechanism for addressing may
however also be disposed at another position of the machine for the
production of envelopes, for example in front of the station 6 for
stacking the blanks, particularly if the machine is not provided
with stations 4 and 5 for inserting windows into the blanks. In a
machine having an output rate which is too high for a typewriter
mechanism in terms of envelope output per minute, it is also
possible in accordance with the invention for two typewriter
mechanisms to be disposed so that one blank is alternately supplied
to one and one blank to the other typewriter mechanism for
addressing so that twice the time for each envelope is available
for the individual typewriter mechanism.
A system of this kind having two addressing stations designated
with 218 and 318 respectively and disposed in front of the station
6 for stacking the blanks on a machine which is not provided with
stations 4 and 5 for providing windows in the blanks is shown
purely diagrammatically as an embodiment illustrated in FIG. 6. In
this case, the suction cylinder 26 of a machine in accordance with
FIG. 1 is followed by a suction cylinder 170 which is adapted to
supply blanks obtained by the suction cylinder 26 alternately, one
to the addressing station 218 and one to the addressing station
318. The principal parts of the addressing station 218 comprise a
pair of edge-perforated feed belts 174, driven by spiked wheels 171
and tensioned by reversing rollers 172, 173, a pair of
edge-perforated feed belts 178, driven by spiked wheels 175 and
tensioned by reversing rollers 176, 177, the rear of the stringer
bearing upon the feed belts 174 being supported by a guide plate
179 which contains an aperture for the type cylinder 180 and
containing the strikers 181 disposed opposite thereto. Both pairs
of edge-perforated feed belts 174, 178 are driven by spiked wheels
171, 175 at such a speed that the blanks Z supplied from the
suction cylinder 170 are stacked between the conveyor belts 174 and
stacking rollers 182 in such a way that at least the addressed zone
168 of the blanks Z remains free (FIG. 12).
At the delivery end of the feed belts 174, 178, the reversing
rollers 173, 177 are followed by suction segments 183, having
rollers which press resiliently against these suction elements and
which once again individualize the addressed blanks and transfer
them by a suction cylinder 185 to the suction discs 44 of the
station 6 of the machine.
The construction and method of operation of the second addressing
station 138 are completely identical to the addressing station 218
described hereinabove so that it is possible to dispense with a
separate description thereof. The principal parts thereof are
provided with the same reference numerals and prime strokes, for
example pairs of edge-perforated feed belts 174' and 178', type
cylinder 180' and so on. Two suction cylinders 186, 187, are
disposed between the suction segments 183' of the addressing
station 318 and the suction cylinder 185, to supply the blanks to
the suction cylinder 185, the blanks having been previously once
again individualized by the suction segments 183', so that the
suction cylinder 185 alternately takes over one blank from the
addressing station 218 and one blank from the addressing station
318 for transfer to the suction discs 44.
According to the present invention it is also possible for the
addressing station 118 with typewriter mechanism (FIG. 7), disposed
at the delivery end of the machine, to be duplicated as described
for the addressing stations 218, 318.
* * * * *