underneath a conveying belt plate 1 , the envelope - filling station according to fig1 through 3 contains endless , circulating conveying chains 2 and 3 that are guided over driven or free - running chain wheels and that are provided in the generally known way with conveying fingers 4 so that pairs of adjacent conveying fingers , which rise over the conveying path plate 1 from the particular top strand of the conveying chains 2 and 3 , define enclosure compartments into which enclosures or sets of enclosures can be placed into the enclosure compartments along the course of the feeding device formed by conveying chains 2 and 3 , and can be moved towards the envelope - filling station in the direction of arrow p 1 . the actuation of conveying chains 2 and 3 can work intermittently or continuously . extending parallel to the feeding device for the enclosures or sets of enclosures and alongside the feeding device is an envelope - conveying device that is generally designated by 5 in fig1 . the envelope - conveying device 5 connects to an envelope - separating arrangement 6 in which from an envelope pack consisting of envelopes inserted standing on edge , a sequence of separated envelopes is created in a way known in the art . the envelope - conveying device 5 accepts this sequence of separated envelopes and transports them lying flat essentially in a horizontal plane to a group of endless , circulating driving belts 7 that are guided over track rollers and driven rollers . the envelope - conveying device 5 receives the envelopes from the envelope - separating arrangement 6 in a state in which the envelope flaps are already open . in the first section of the envelope - conveying device 5 , the conveyed envelopes are still gripped relatively tightly between the top strands of the driving belts 7 and pressing rollers or pressing rolls prestressed against them from above , while with further progress of the envelopes in the direction of arrow p 2 shown in fig1 , this gripping becomes looser , which can be achieved by progressively less prestress by the pressing rolls , for example . finally , an envelope conveyed by the envelope - conveying device 5 arrives by its leading edge , which lies opposite the envelope opening , in the region of an intermediate envelope - conveying device that is generally designated by 8 . the intermediate envelope - conveying device 8 contains a intermediate envelope - conveying table 9 with a top that is placed approximately at or somewhat below the level of the feeding path plate 1 , whereby provided in the intermediate envelope - conveying table 9 are elongated cutouts 10 through which pass , slightly above the level of the intermediate envelope - conveying table 9 , the top strands of the endless , circulating conveying belts 11 , which are guided over track rollers and driven rollers . the angle of the central longitudinal axis of the cutouts 10 versus the conveying direction of the envelope - conveying device 5 is designated by α in fig1 , and lies in the range between 15 ° and 75 °, whereby an angle of 40 ° to 50 ° is preferred . fastened on the surface of the intermediate envelope - conveying table 9 is a bearing web 12 , which extends parallel to the elongated cutouts 10 and from which bearing axles 13 protrude horizontally above the intermediate envelope - conveying table 9 and in an orientation perpendicular to the course of the elongated cutouts 10 . mounted on these bearing axles are spring - loaded pressing rollers that interact with the top strands of the circulating driving belts 11 . it can be seen in fig1 that a set of spring - loaded pressing rolls 14 a , 14 b and 14 c is mounted on each of the associated bearing axles 13 in such a way that , interacting with the top strands of the driving belts 11 , this set of pressing rollers simultaneously grasps and tightly grips the leading edge of an envelope conveyed from the envelope - conveying device 5 and , because of the now - looser gripping of the envelope in the end phase of the conveying by the envelope - conveying device 5 , conveys the envelope along the intermediate envelope - conveying device 8 in a translational movement at an angle and in a direction corresponding to the angle α , without the enveloping experiencing a rotating movement . interacting with each of the top strands of the driving belts 11 are additional abutment rollers , which are mounted on associated bearing axles 13 and are downstream of abutment rollers 14 a , 14 b and 14 c , and the number and / or prestress force of which decreases in the direction of the associated driving belts 11 with increasing progress in the conveying direction of the intermediate envelope - conveying device , corresponding to arrow p 3 , in such a way that at the beginning of the conveying by the intermediate envelope - conveying device 8 , the gripping of a conveyed envelope between the driving belts 11 and the abutment rollers 14 is comparatively tight , but is relatively loose towards the end of the intermediate envelope - conveying device 8 , particularly in the region in which an envelope is conveyed by the intermediate envelope - conveying device 8 against an angled stop arrangement 15 , which when switched to the active state , precisely aligns the conveyed envelope upstream of a push - in arrangement 16 , which collects enclosures or set of enclosures from the feeding device and pushes them into the conveyed , opened , for example , by compressed air jets , envelope . due to the slight gripping or the loose coupling between the conveyed envelope and the abutment rollers 14 that interact with the driving belts 11 , during the aligning the envelope is able to carry out an aligning movement in its plane under the effect of striking the angled stop arrangement . the angled stop arrangement 15 contains a stop pin 17 that can be lowered into an inactive position or raised into an active position above the level of the intermediate envelope - conveying table 9 by means of drive 25 , and a stopping straightedge 20 , which is hook - like in cross section and is oriented perpendicular to the conveying direction of the feeding device and perpendicular to the push - in direction of the push - in arrangement 16 , and which is fastened to a pivot shaft 18 that is supported above the level of the intermediate envelope - conveying table 9 . the pivot shaft can be pivoted between two positions by means of a rotary drive , for example , by means of a rotary magnet 19 . in the first position , which is designated as the active position , the main part of the stopping straightedge , which is placed on the pivot shaft 18 , is approximately vertical and assumes a position in which the precise alignment of the conveyed envelope upstream of the push - in arrangement 16 takes place in interaction with the stop pin 17 , which has been switched to the active state . in the second pivot position of the stopping straightedge 20 , the latter has been pivoted on the pivot shaft 18 somewhat in the clockwise direction relative to the representation of fig1 , so that the main part of the stopping straightedge , which is placed on the pivot shaft 18 , runs downward at an angle from the pivot shaft , while the lower , hook - like projection of the stopping straightedge runs approximately vertically downward and realizes an intermediate stop position , which can also be seen in fig3 . when the stopping straightedge 20 reaches this position and the stop pin 17 remains switched to the active state by the drive 25 , then with the driving belts 11 having been put into operation again or having remained continuously in operation , a filled envelope , following the stopping straightedge 20 that has been switched back , is withdrawn by a distance f from the push - in arrangement 16 in such a way that the push - in parts of the latter reliably come free of the filled envelope before the latter is conveyed away . details of the functioning of the angled stop arrangement as just described can be seen in fig2 and 3 . as soon as the envelope that has been conveyed by the intermediate envelope - conveying device and aligned by it in interaction with the angled stop arrangement is filled and has been withdrawn relative to the push - in arrangement through creation of an intermediate stop position of the angled stop arrangement , the angled stop arrangement in its entirety is switched to the inactive state , which takes place by raising the stop pin 17 by means of the drive 25 in the embodiment according to fig1 , or by lowering the stop pin below the level of the intermediate envelope - conveying table 9 in the embodiment according to fig3 . now , by means of a drive 22 , a pressing roller 23 is lowered in the direction of the top strand of an endless , circulating driving belt 24 , as a result of which the filled envelope is grasped by the envelope - advancing device containing the pressing rollers 23 and driving belts 24 , and is conveyed away in a direction perpendicular to the push - in direction corresponding to arrow p 4 . embodiments are conceivable in which , in a modification of the embodiment according to fig1 , in order to switch the angled stop arrangement 15 to the inactive state , not only is the stop pin 17 raised or lowered , but the stopping straightedge 20 is also completely pivoted away in such a way that after an envelope has been filled and withdrawn relative to the push - in arrangement through creation of the intermediate stop position , the filled envelope is then advanced by the intermediate envelope - conveying device 8 in the direction of arrow p 3 , for example . in the embodiment shown in fig1 , the push - in arrangement contains endless push - in belts 27 and 28 , which are parallel to each other , provided with push - in fingers 26 , circulate over the feeding path plate 1 of the feeding device , and in particular , have the form of toothed belts and are placed over driven rollers 29 and 30 as well as free - running rollers 31 and 32 . when they are located in the region of the bottom strand of the push - in belts 27 and 28 , adjacent sets of push - in fingers 26 receive enclosures or sets of enclosures from the conveying fingers 4 of the conveying chains 2 and 3 , for which purpose the push - in belts 27 and 28 move at a greater circulating speed than the conveying speed of the conveying chains 2 and 3 in such a way that at a suitable match in timing a set of push - in fingers 26 overtakes a set of conveying fingers 4 of the conveying chains 2 and 3 and thereby lifts the enclosures or sets of enclosures from this set of conveying fingers and conveys them in the direction of a readied open envelope . once the push - in fingers 26 have pushed an enclosure or set of enclosures into the readied open envelope that has been aligned by the angled stop arrangement 15 upstream of the push - in arrangement 16 , then the switchover of the angled stop arrangement into the intermediate stop position takes place with the stopping straightedge 20 pivoted back somewhat , along with a corresponding moving up of the filled envelope in a direction corresponding to the push - in direction of the push - in arrangement 16 . because of the free space that is created towards the opening of the filled envelope , this means that the push - in fingers 26 can easily run upward around the free - running rollers 31 and 32 to the top strand of the push - in belts 27 and 28 without the push - in fingers rubbing against the edges of the opening of the filled envelope . however , even if , unlike the embodiment according to fig1 , the push - in arrangement contains push - in fingers that can move back and forth parallel to the conveying direction of the conveying path and receive enclosures or sets of enclosures from the conveying path , and that are moved over a base plate and are supported on a pivot lever that is actuated in an operating stroke and a return stroke , the withdrawing of the filled envelope from the push - in arrangement following the first alignment and filling of the envelope also proves to be very expedient , since an advancement by the advancing device can take place without delay after the filling operation , without having to wait for the return stroke of the push - in fingers , which at first starts relatively slowly from the dead point of the pivoting movement . this simplifies the adjusting of the envelope - filling station , and in certain cases allows an increase in operating speed . it can be seen from the top view of fig2 that in the region upstream of the push - in arrangement 16 , where the envelope conveyed by the intermediate envelope - conveying device 8 is first aligned at the angled stop arrangement 15 upstream of the push - in arrangement 16 , there is provided above this region a pressing arrangement 35 , which can optionally be moved into an active position or lifted from this active position and the details of which are not specifically shown in the drawing . in the embodiment shown , this pressing arrangement 35 contains in cages two spherical rolling bodies that can rotate freely within these cages and that have a certain vertical play . with the interaction of one of the driving belts 11 of the intermediate envelope - conveying device , the cages , together with the spherical rolling bodies , can be lowered in the direction of an envelope delivered and aligned just upstream of the intermediate envelope - conveying device 8 , in such a way that the spherical rolling bodies together with one of the driving belts 11 reliably convey the envelope into the angular space between the stop parts of the angled stop arrangement and assist the alignment . after that , the pressing arrangement is lifted off during the filling of the envelope and is thus moved into an inactive position in order , when the stopping straightedge 20 has pivoted back by the distance f in order to withdraw the filled envelope , then to be lowered back onto the filled envelope in such a way that , with the interaction of a driving belt 11 of the intermediate envelope - conveying device 8 and the pressing arrangement 35 , the envelope is reliably moved back by the distance f . once that has taken place , the stop pin 17 of the angled stop arrangement 15 is switched by means of the drive 25 to the inactive state ( i . e ., it is raised or lowered below the level of the intermediate envelope - conveying table 9 ) and the advancing device is set into action by lowering the roller 23 by means of the drive 22 , and the filled envelope is conveyed away . the person skilled in the art will recognize that a suitably controlled drive , a solenoid , for example , is assigned to the pressing arrangement 35 , but that it has been left out of the drawing for the sake of simplicity . in order to achieve that the envelopes arriving from the separating device 6 with an open envelope flap are conveyed in the horizontal direction according to arrow p 2 in fig1 inside the envelope - conveying device 5 tightly gripped at first , and then shortly before their transfer to the intermediate envelope - conveying device 8 are advanced only with low forces so that following the engagement of the abutment rollers 14 a , 14 b and 14 c , the intermediate envelope - conveying device conveys the envelope parallel to the device itself in the direction of arrow p 3 , the envelope - conveying device preferably exhibits endless , circulating conveying belts 7 that are arranged parallel to each other and , in an end section that is located upstream relative to the conveying direction , abutment rollers or abutment rolls , each of which interacts with the top strand of the conveying belts and butts against the top side of the envelope . however , in the above - mentioned end section of the envelope - conveying device , provided then as abutment means that interact with the top strand of the conveying belts and are positioned against the top side of the envelope are either a housing - mounted abutment plate 7 a , as is indicated in fig1 , or spherical rolling bodies that are guided in cages of a housing - mounted abutment plate . another embodiment of the envelope - conveying device , not shown in the drawing , provides that it contains endless , perforated conveying belts running over vacuum chambers , whereby the vacuum from the end section adjacent to the intermediate envelope - conveying device can be adjusted in such a way , or the number of adjacent perforated conveying belts in this end section is reduced in such a way , that in the above - mentioned end section the conveyed envelope can be moved with a movement component transverse to the conveying direction of the envelope - conveying device as soon as the intermediate envelope - conveying device engages the envelope . in a way similar to that described above , the intermediate envelope - conveying device can contain , as is shown in fig4 and 5 , endless , perforated conveying belts 40 that run over vacuum chambers , whereby the vacuum from vacuum chambers located in the region near the angled stop arrangement can be adjusted in such a way , and / or the number of adjacent perforated conveying belts 40 in this region is reduced in such a way , that , overcoming relatively low frictional forces , the conveyed envelope can be displaced in its plane relative to the intermediate envelope - conveying device for the purpose of alignment at the angled stop arrangement . for the purpose of withdrawing the filled envelope from the push - in station , during the approach and presence of an envelope at the angled stop arrangement as well as during the switching of the angled stop arrangement into the intermediate stop position , the intermediate envelope - conveying device preferably remains switched on , and is controlled accordingly . since the switching of the angled stop arrangement into the inactive position in the shown embodiments provides only the lowering or raising of the stop pin 17 while the stop straightedge 20 remains in the position taken through production of the intermediate stop position , even if the intermediate conveying device is kept in continuous operation , the filled envelope is removed by the advancing device in the direction of arrow p 4 , without being turned by the continuously running intermediate envelope - conveying device .