DE1560936A1 - Circular knitting machine - Google Patents

Description

Circular knitting machine

The invention relates to means for adjusting knitting movements in knitting machines and in particular means such as those used to achieve movement adjustments of Control devices in circular knitting machines at certain times when performing knitting operations Find. The subject of the invention are means »by the such a selected setting of the control can be achieved: assuming that a particularly large number of variable Tax movements becomes possible.

The various functions performed by the apparatus in circular knitting machines are subject traditionally the control of cams or eccentrics, attached to a cylinder or a control drum. are. The motion settings become the control omiael

BAD ORlGiNAi

209824/0007

ssu appropriate times while executing a Knitting movement transmitted »in order to move the cams or» eccentrics against or away from the rams in order to to transmit movement to the various parts of the Maaohine, to the operation of apparatus, such as movable ones Lock parts, mechanisms for controlling thread changes and other functions, such as those for knitting machines is understandable to well-known experts. “The sinatell movements of the drum are traditionally subject to it the control by a sexton * or control chain, - which is moved around at regular intervals and thereby when virken a complete knitted fabric a closed one Performs circular movement, the times at which the control drum is adjusted by back, by the respective position of nose-shaped projections on the chain is determined · Be gives a number of Opportunities to control the advancement of the drum according to a predetermined cough, but for the most part are limited to certain not easily interchangeable pattern arrangements. Am fundamental disadvantage of the known method of controlling a drum moving in reverse is to use it With the increasing complexity of modern Maeohinen, lamer has become more difficult, sufficient drum movements are available and sufficient « Change the coordination of the movements,

209924/0067

.3 * .- '158093.8

about the wide variety of patterns and directions with the knitted fabric required today can · organic invention has set itself the task » to create an adjustment mechanism »which is based on a Control drum acts, which in various embodiments can be used by circular knitting machines and is characterized by the fact that the pattern or reverse Sequence can be changed as desired and in a simple manner can · Furthermore, the invention provides »to create means, which allow a more frequent displacement of the control drum in one knitting cycle and also a larger selection the time setting with regard to the active circulation as it was previously possible.

According to the invention, the adjustment mechanism is exposed a driven back part made up of pawl-like Means that engage the back from Control means (e.g. a control chain) that act on the pawls that they come into engagement with the rear part and, if necessary, operate from pawl-driving Means engaging the pawl means over a plurality of operating strokes during each period of time the actuation by the control drum move and from rack-selecting means that on the latch means act so that the rear part is only opened in the event of a predetermined actuation shock or « push the latch means actuate * through this

209824 / 0QS7 bad original

1560938

«. 4 β

Adjustment mechanism therefore there is the possibility * daft Kückteil in a · multitude of different possibilities · !! selectively to actuate * whereby a number of different Backward movement becomes possible, which leads to an increase in contributes to additional standard possibilities «If the © befl , the so-called sample drum with the driven back part coupled, this creates an additional range of backward movements, which it allows, with a larger one Range of must options to cope with as it Up to now it has been customary «You can act on the ratchets» so that they only touch the rear part Actuate a certain position or push »This takes place by dubbing, so that the ratchets with the remaining impact or impacts during a formation · period * are ineffective.

The part performing the back movements is in a suitable one Construction carried out in the form of a toothed rack wheel and directly coupled to the machine's control circuit.

The shift pawl means cooperating with the toothed pinion wheel can have a plurality of pawls which have been adapted one after the other to produce a plurality of contiguous movements ₍ any or all of which are selected by means of the rack-selecting means), in order to take effect when the rack wheel advances, for example with an expedient arrangement

209824/0067 ■■. bad original

two pawls can be arranged next to each other in order to work with the rack part. It is possible that the pawls are advanced alternately, one being withdrawn while the other is advanced and each one is acted upon to perform a plurality of actuation shocks each time the ratchet is activated. With each of these activations, there are four steps for advancing movement available, which can be transferred to the ratchet. The movements are primarily graduated in such a way that they take place continuously without pauses in between. " a bäliebi <e this activity levels so aüs-

ew'-held that she alone or with another or several of these stages takes place. That way is it /. soluble ,_ different areas of the rack-and-pinion ; on so select. ,, that they are used in different activations <ler ratchets occur, thereby the control widths can ± Mr dio tooth pinching short or. as normal uiibo "i" parted - I a -e st hurry to meet the requirements. .be just right.

dlr? onach -loi? obi, ea Execution. ^ an. jeordero pawls scarf tuiig KL-mi am beaten through a nose or a projection .. ² Ui? a 'control chain, set in a ¹ ity, where oil ©' 7bou ';rkett; oil represents control means enaimed above.

BATH ORIGINAL

20982Α / Ό06? ,, - : \

- ο ··

and usually the pawls overplayed so they working idle and releasing the dubbing media takes place through the action of the nose or projection attached to the control drum, the or, the acts on a cam follower, the path of the Na «· or the projection is so obsessed that it is in the course two revolutions of the needle cylinder in the cam follower passes by. The fact that the two pawls each perform four steps of the rack movement and the Movements of the pawls alternating and at equal intervals is understandable for everyone Quarter turn of the two turns of the needle cylinder © in potential step for the advancement of the rack partly done. The rack selecting means is arranged so that it is able to select one or select several of the moving steps so that it takes place at a given activation and thus iat given the opportunity to act on one to eight movement levels of the control tower. Also at less than eight of these stages can be achieved by the tooth-rangefinder Means any one of the multitude of Attitudes to the entry into force of the Movement Movement or select steps *

During the practice of the invention, the rack selectors Means driven by the motion ^ uno of the 2 rack part actuated shafts, so that at each

^{: Λ} 'BAD ORiGlNAl.

209824/0067

Activation of the latch means
Means for JckßeeteHt are "to determine the selective" actuation for the next activation of the latches "The arrangement can be predicted that in Mm dl * gear deselecting gowns a movable part is a" ^ eaet zt, which "with de "Art driven rack part coupled and" o arranged so that it tiilnlmmi at aa advancing movements that entapi-ech those of the driven rack part. Provides a movable part of the means that selects the rack, which in this way represents a movable sector gate, can be designed in various shapes and a particularly useful form is a curious Troemel, which sits on the shaft of the above-mentioned rack and is coupled to it this toothed rack wheel is attached to the control panel of the machine. The electrical part can usually have a suitable arrangement of effective projections which cooperate with a group of movable instruments in order to actuate a transfer device for the clicks of the ratchet circuit, whereby dia Ih * strumönte eo They are arranged so that they are moved back and forth and selectively, through the interaction with the projections on the selector part, are made to activate the transfer device as and when required en instruments ift liinjsricntuni to be moved back and forth to the

BATH ORIGINAL

Actuation of the transfer media by the presence or absence of a cooperating projection in the direction of travel of the instruments triggering the dubbing with the special arrangement of the selector drum.

In practicing the invention, any of the above may be used Selector drum be formed on its circumference with channels that sit parallel to the axis at intervals, which correspond to the stages of retrospective evidence as they are carried out by the ratchet circuit can be achieved so that the plates to support the butt ends in the channels in the necessary Design can be inserted, leaving the butt ends protruding from the panels in place or, if necessary, can be removed from the panels according to the pattern requirements. Here you can the butt ends cooperate with straight guides which are periodically moved in the longitudinal direction by cams and acted upon to make a reciprocating motion when used with the butt ends come into engagement, the reciprocating movements serving to operate a dubbing lever, so that a jack is played over. The plates for the butt ends can in some cases be pre-peened Have end that can conuen directly with a pawl into engagement to cause a dubbing operation.

BAD ORIGINAL 209824 / 00S7

A useful type of return means according to the invention is exemplified by the accompanying drawings reproduced and described below with reference to the drawings, namely show » Fig. 1 is a perspective view partially as

Excerpt from certain parts of the means carrying out the return movements and means selecting the movement and sequence according to the invention, the lateral extent of certain parts being exaggerated for the sake of clarity,
j? i _o '. 2 A - D one. diaphanous top view of the

iiockenbet. ti young determinative parts of rooting out Means in different positions, Fi..i. Figure 3 is a front view of a cleat like this used in dar machine and

yy'i-j. 4 a perspective representation of the same the trick moves ^! and the determining means of return (without excessive lateral expansion in any of the parts), which are mounted in a machine and seen from the rear of the machine (thus a different perspective than in FIG. 1), with further individual sides which the Gtt.'iclcbev / eb'un ^ en beatim ienden Rüakuifc-.el U ₁ Ul ο ine auxiliary control. is shown, ". '

209824/0067

In the partial view of Fig. 1 1st of the parts of the advancing means, a rack wheel 5 is shown which is attached to the shaft of the Main control drum (io5 in Fig. 4) is attached as it is usually located on a dog knitting machine with a rotating needle cylinder; · Bas rack and pinion 5 cooperates with Klinkenmitfceln, which consists of latches 6 and exist, which the wheel 5 can advance one after the other. Babel are latched by cam means connected to the Drive means for the cylinder are coupled, so back and moved that each of the pawls 6 and 7 four full thrusts in each direction every two

6 jgid 7 revolutions of the needle cylinder. The cams acting on the pawls can consist of a cam block with eight elevations made up of two sections (Io2a _f 103a, Flg. 4), one of which is intended for a pawl and each has front projections, the cam projections being timed so that when one pawl moves forwards, the other looks back and thus the possibility of eight steps backwards to take place in the same abstractions of each other with two cylinder revolutions, so that every step at a quarter turn of the cylinder occurs. The operation of the pawls 6 and 7 is so proceeding that, if they are allowed to come together with the teeth of the toothed rack gear 3 in unison with the two cylinder revolutions, the reverse calls one after the other

209824/0067

And follow without interruption so that the movement of the Zabnstangearadee 5 A ^ essential steadily runs *

Normally the pawls 6 and 7 are in a forward ineffective position (by means which are described with reference to FIG. 4) so long as locked "until an advance is desired" actuates a belt adjuster so that the machine is operated at low speed. ”This actuation of the ram also serves to release the pawls 6 and 7 from the lock so that they can advance the rack and pinion. Once each pawl 6 and 7 are carried out four bursts in each direction, the release takes place a detent, and thus the pawls are locked again, this time in a forward inactive position · Then, the drive belt is so adjusted that the Haschine either with medium or faster running speed, and is äwar as long again activated by the person sitting on the Hauptstöuerkette nose to the Stöbel "at the time ₉ where the four shocks are each done each pawl in each direction, the cheeses are aufder timing chain, of course, the ram-free,

If the two pawls 6 and 7 are constantly with the toothed pinion 5 are allowed to intervene with each activation

BATH ORIGINAL

209824 / 0Ö6?

the advancing means vo eight steps: rrUekeiider movement to the rack gear ■ ■ $ and Steuertromael applied, during the time when two vollstindige revolutions of the needle cylinder done. Is the shown in the drawings. Mechanism serves to control the four bursts se each * pawl in a predetermined We £, daiait to each of the pawls 6 and 7 are acted upon so that eie arbitrarily with & m teeth of the rack gear 5 into engagement come, or they missν As a result, a movement of the control drum can take place at 90 ° cylinder straight rotation during each of the two revolutions of the needle cylinder and the extent to which the control drum is shifted can be varied over the range between one and eight chopping stages »

In FIG. 1, a narrow drum 8 with circumferential channels 8a forms the movable selector device for the means for selecting the return movement and is attached to the shaft of the rack wheel 5. In respective corresponding channels 8a of the drum 8 cleat plates or stroke movements selecting parts 2o (Fig. 3) are used, at which butt ends 9 are provided on four points, which are broken off at individual selection parts at certain points where they are not needed. For a reason to be explained later, some of the selected parts 2o are formed with arched curved plates 1σ. If the selection parts 2o are attached in the channels 8a of the drum 8, they are made by means of arched insoles 21, i / e

rücMiultendeii ropes in a ;; rifΓ can, in oijjenor 209824/006?

Cover withheld. The positions of the four pushers.

^: - ■■■ - ■■ - ■. ■ ^, -. '"' - ■ correspond to those of the four tactile rods .'ψ » 2, 5 ».4t # ig * 1 and 2, each of which has needles Ia ₁ 2a, 5 * and 4a at the ends, which with abgeschrägtenKanten are designed so that they can run up to one of the joint ends 9 each when the Taststäbe be reciprocated ¹ · Since ^ is in a shock end 9 each in d ^ J? runway one Tapsters. Once that follows is the measuring rod in question, which is raised to lie against a rod 11 which extends from a lever 12 which is attached to a Sturamel shaft 13 and raises the rod 11 and the lever 12, the lifting of lever 12 is effected by a screw 14 and lever 15, that a shaft 16, which sits freely movably in a holder (not shown), is moved back and forth the profiled end 17 & is raised and thereby konuat to lie against pegs 7 »and 6b that of de n latches? and 6 protrude. In this way the pawls are also raised and thereby disengage from the teeth of the rack wheel 5 as the pawls advance.

For the sake of clarity, the key sticks 1 * 2 | 3 and 4 and other associated parts in Fig. 1 are drawn in width to a greater extent from the advancing means than occurs in the practice. The key sticks and 4 are each attached in a guide , where 20982Λ / 0067 ^BAD

their end pieces by tension springs (not shown) are each brought into contact with grouped arranged cams 22, 25, 24 and 25, or cams that are fastened to one another and “was on one side” of the cam provided with eight projections, who actuates the two pawls 6 and 7 «The sole cams and feeler rods are shown in Fig. 2. · The feeler rods 1, 2, 3 and 4 are each moved a short distance backwards in the row» which is sufficient to each time the noses of one Pushing 9 to move "if one is below the nose" The movements are shown schematically in Pig. 2 * Sabers have the movements of touch rods 1 "as will be described later, a different task than the other rods, tig" 2A shows the positions of the rods at the moment when the pawls 6 and 7 are not locked "with the fast rods 2 »3 and 4 · are in a forward position directly above a selector 2o · After unlocking the pawls 6 and 7, the feeler rods Z% 3 and 4 remain in the position shown until the needle cylinder rotates 180 ° Thereupon the feeler rod 2 moves back into the position of yig «2B. After the needle cylinders have rotated a further 180 ° * moves 4 * * loads *!) 3 in dl« of flg. If the # 2 cylinder has been rotated further by 18 · ®, see

BATH

209824/0067

the key tab 4 in the position indicated in FIG. 2D "back"; This impulse is held during a turn of almost noöhisaisi? L8ö ^ö teeiteeha and then the feelers ß _e 3 and # are returned to their starting positions, FIg, £ k _t * From the moment the latches were unlocked, four Finished with a turn of 1θο ° »ie two complete revolutions of the needle sylidere and the pawls have executed a total of eight impacts or * clock * (two with one rotation of; 186®} and the feeler rods have completed their circular run. "* ■"" ■■■ '■■' ■■ - ■ - ■■■. ■ ■ -. · ..

From the foregoing it can be seen that if a butt end $ on dia Auswählstüclc 2o aitst in the runway of Taetstab 2 _t the pawls 6 and 7 by means of a cheese 2n as long · have no influence on the rack gear, to each latch a single burst (130 ° cylinder rotation) and then the button moves back from the pushing end, thereby enabling both pawls to come into engagement with the toothed pinion Rack gear back, d, h. So, at the second impact or cycle of their movements (during 'the second cylinder curl of 180 °) and then the tactile hare moves away from the impact end and enables both pawls ι that they come into engagement ^{with w': the rack wheel.} A bumpy one. »^^

BAD 209824/0067

under the tactile nose 4a also acts to the effect on the Latches so that they play over on their third stroke or stroke (the third half-turn of the needle cylinder) and thereby makes it possible for the latches that they on their fourth hits or hooks (i.e. downgrading 7 and 8) mesh with the rack gear »namely at the fourth half-turn, which forms the end of the two complete turns of the needle cylinder » which occur when a stud is passed on the control drum · Because both pawls are at the same time would be allowed to interlock with the ratchet wheel first pawl to trigger a forward movement, (pawl Fig. 1) advance the drum · If this is undesirable, A selector piece 2o, which has a bent-over cam plate 1o, FIG. 1, serves to directly lock the pawl 6 to stop »This means that the advance is delayed until the pawl 7 also moves forward.

Aue from what has been said so far, it can be seen that the Taetnasen 2a, 3a and 4a can serve the Suspend latches two, four or six bars long, depending on the position of the one with them cooperating butt ends 9 is dependent «If the bent piece 1o is also provided at a butt end or butt ends 9 on a selected piece 2o, the latches can each be three, five and seven Clocks are brought to a halt. Is only one

2098 24/0067 B ^AD o ^{R! G! NAL}

Cam plate 1o provided on a selection piece 2o, ao only the first stroke or stroke of a pawl is exceeded plays or goes into the void »In this way« can get through Selection of a suitable selection piece a 2o (or if there is completely omitted) every push or cycle of the pawls from 1 to 7 (or none of them) can be dubbed »

Each shark, when a step occurs in the return movement, the drum 8 is rotated so that a new selection piece 2o in the next following channel 3a is brought to interact with the keys the progressive sequence of eight impacts bsw. Clocks are not intended to act «Xn this case have the pawls in the other cycles of the sequence * brought to suspend" In this connection the measuring rod 1 with the rabbit _t 1a and indeed the motion sequence is as follows. The keyboard 1 remains firmly in a forward position, while the latches execute the thrusts or, bars two to eighth. So if a stroke end is on the same line with them, the tactile nose causes a suspension regardless of how many backward movements from two to eight remain. Immediately after the eighth stroke or stroke of the pawls, the key stick is moved so far back that it comes free of one stroke end and it remains in a rearward position for the first stroke or stroke of the next cycle.

BATH

209824/0067 -}

T560936

until it moves backwards again and lets position 1 · * "prevent the rest of the return movements as much as it can is necessary.

The faststab 1 has a fold-down nose 1a » FIg * 1 »and thereby the feeler rod can be inserted into its gate * the «position to be moved» whereby the vase 1a in a lower position rests on the abutting 9, of which it been withdrawn let · you rabbit 1a can then so « continued to be used, τοπ a butt end 9 raised to become when the drum 3 is advanced «On this Way, the tactile rod 1 is used there, the back movements of the Control roamel by temporarily switching off the control by means of the three other tactile rods 2, J and 4 au ver * hinder »This means that any chosen item must be 20» dal sum brought together with the abutting of the tactile nose 1st, but is not needed until the next stud of the chain is advanced under its joints »at least one joint end 9 in alignment old the feeler stick 1 show »Bas does not match, however, see below, if the relevant selection * at »pay attention (or Ie did en) Back of a sequence old the tactile sticks are brought together.

About the main guide block in Fig. 4 "on soft" guides sit on which the pawls 6 and? and the tactile sticks 1, 2, 3 and 4 are attached, ha ”the Besugsaeichen

1oo and is on a side wall 1o1 of the frame on one 209824/0067

Place, which makes it possible that the lower. Bnd "n der Taetsfcabe and Wallen 102 and 105 in the guides 36 and 5 ?, in which the latches are also located The respective cams 22 to «25» 1o2a and 1o3 * on the main shaft 1o4 of the Huschln · are in contact. The upper ends 1a, 2a »3 * imd ^ a the buttons work with the push wires 9 of the pieces 2o which select the return movement, which in certain channels dtr tro »mel 8 eitsenj together» the Pawls 6 and 7 work with the toothed rack wheel 5 susamaen and the Noekentroamel 1o5 is attached to the rack wheel and is turned with it Main control drum of the Striok machine

Bie said Arretierutisemittel "welehe the pawls 6 and are intended to hold in tijaer ydrderen unwirkeaaen position 7, eioh eetseä of a control rod 1Q6 isueaamen, with Jtedergeeteuerten bars 1o7 and 1o8 suBammenwirkti the Klinkenführungafö 6a and 7a freisugfübem bsw · to Ter" latches "the Actuation "as already done!" by standing bolts located on the main timing chain of the Haedhine "

Should there ever be an interruption in normal operations enter expiry of casehine; S.B * a shutdown ¥ t> due to damage to knitted parts or by wrong treatment ^ then precaution must be taken against an un * desired back of the tendon wheelβ 5 to be hit «

BAD ORIGINAL 209624/0067 ^ ^;

- 2ο -

Such an interruption could occur immediately after the start of a new knitting sequence of the knitting machine and even before the rack wheel 5 has been brought to advance is or it could take place if the main chain had been advanced to a position in which the retracting pawls 6 and 7 are released to begin a reverse sequence this but not quite executed yet * So far it had to Worker turn the timing chain back to its original position if he wanted to eliminate a fault, and a Operate the control unit to put the chain advancing mechanism out of operation to allow further movement of the chain Chain to prevent and only then could turn to the error. Conventionally, when the touch-up has been made, the machine is turned by hand to make sure of the unhindered running and only then is the mechanism to the back of the chain released and the machine started. With this maintenance of the machine it would be possible that the Zahn.rtangenrad 5 and the control drum 1o5 can be advanced undesirably and thus gets into disorder when the machine is restarted, if not Precautions are taken to prevent this from happening.

Unwanted advance can easily be done by a Auxiliary control can be avoided, which is coupled with the just mentioned manual control for parking the main chain. This not only makes the handle peckish

BAD 209824/0067

the chain is put out of action, but also the two Pawls 6 and 7 »which are used to advance the tooth. : enrades and the control toramel 1o5 are determined.

The hand control, which is normally used to turn off de_r Main chain is shown in part at 109 in FIG. A curved rod 1o9 (only partially visible) becomes Turned by hand if necessary so that the bent end 1o9a with part of the pawl (not shown) in contact comes, which advances the main chain and thus causes a separation of the pawl from the rack and pinion of the main chain. The bent end is held in place by engaging a notch that is in a notched plate 11ο is located. The liberation the pawls 6 and 7 of the rod 1o9 is through a Bowden cable 111 causes which is anchored in the end 1o9 & and passes through sheath 112 to the other end to be attached to a flat lever 1135, which next to the lever 12 and on the same Stuminelwelle 15 sits « At the end of the shell 112 there are posts 114 and 114, respectively 115 to which the sheath is attached. The flat lever 113 has a projection (hidden in FIG. 4), which comes to rest against the underside of lever 12,

so that when tightening the Bowden cable 111 lever 12 through this projection is raised.

BAD ORIGINAL 209824/0067 ^

As already described, lever 12 is normally operated (via rod 11) by buttons 1a, 2a, Ja and 4a, which lift the lever to disable pawls 6 and parts 14, 15, 16 and 17 . The pawls 6 and 7 are made so in a similar manner by the assist control idle when the bent rod is actuated 1o9 to shut down the main chain. In this way, by the time the worker has corrected the fault and turned the machine by hand and finally operated rod 109 to set both the chain and the pawls in motion to advance the drum, the pawls associated with the drum each have sequence _t they have begun when the error occurred, out zn end and you long gesrtst by parts 1o7 and 1o8 locking out of action "bie e'e be released from this lock at any given! Seitpunkt by a stud on the control drum again.

20 982 4/0067 ^{9 j 8A0} o ^{R! GINAL}

Claims (1)

P a t e η t a η s ρ r ü c h e t .j rear bz \ i, adjustment movements executing means for use in a knitting machine, characterized in that it consists of a driven rear part, made of pawl means, which come to the rear portion engaged from control means, which are intended to actuate the latch means to the effect that this come into engagement with the rear part and, if necessary, actuate pawl driving means to move the pawl means over a plurality of actuation cycles during each section of an actuation by the control means and finally consists of return movement determining means which act on the pawl means to do the Only set the rear part in motion with a previously determined activation cycle or cycles of the latch means * 2. Rear device according to claim 1, characterized in that that the ratchet is acted on, that they only set the back in motion at a certain beat or beats, namely, that they are made to stop and then ineffective for the other clocks in the course of an actuation stay. . 209824/0067 ■ y ... · ΐ '<· ΐ ^ί! 3 » Rear device according to claim 1 or 2, characterized in that the driven rear wheel is designed as a rack and pinion and can be coupled directly to the control drum of the knitting machine» 4 # Baking device according to claim 1 to 3, characterized in that the pawl means ₉ which interacts with the rear part consists of a plurality of pawls * which act one after the other to cause a plurality of successive back movements, from any or all by means of ύ .63? the return movements auewählenden Hittel be selected könntn to be effective in advancing the rear part " 5 »Rear device according to claim 4, characterized in that that the two pawls are arranged next to each other, inter alia ait the back to work on the uzuara, and rarely so arranged «lad» that they are advanced alternately, wob ·! the «in« »urüokge * ogen, while the other« is advanced and acted upon each to that effect is, "ine a number of actuation asfcöflen or" Clocking at every ringing of the clinic to be carried out. BATH ORIGINAL 209824/0087 6 * Reverse device according to claim 1 to 5, for use in a circular knitting machine operating with a rotating needle cylinder »characterized in that the pawl means are set in motion by a stud bolt or projection on a control chain which forms the control means so that the pawls is normally not acted upon and so an idling occurs and that when the transfer media is released due to the actuation by the stud bolt or projection on the timing chain , which acts on a tappet, the stud bolt or projection is pulled past the tappet in the course takes place by two revolutions of the needle cylinder 7. Rear device according to Claim 6, characterized in that that zv / ei pawls arranged next to one another are present that cooperate with the back and each These pawls are arranged in such a way that they actuate four rebounds or act as they pass a stud bolt or a projection on the ram 8. Rear device according to claim 7, characterized in that that the means determining the return movements BAD ORiGiNAL 209824 / Q067 determine one or more of the jerky steps which can be carried out with a given actuation of the latch means « 9 «rear device according to claim 1 to 8, characterized in that that on the Hückbawegungen determining Means through the movement of the driven hooctel is acted upon, so each time the pawl means are actuated the means determining the return movements are postponed in order to baw the selection. determining Determine the process for the subsequent actuation of the latch means xu « 1o. Return device according to claim 9 »characterized in that the Rückbev / Egun ^ en determining means have a movable part which is coupled to the Büokteii and 1st arranged so that participates it to the Bückbewegungen corresponding to those of the rear part * 11 rear device according to claim 1o, dsdurem characterized, that the moving part of the Rüefebewegungen determining Is formed by means of trosaelföraig and with the shaft of the rack and pinion, which the driven Represents the back part, is coupled and is attached to it BAD ORIGINAL 209824/0067 > 87- · ■ ■ '■ · ■■■ ■ - - - 12 "Back-up device according to claim 11, characterized by the fact that the Tafoamelfoi? S of the movable of the lift-off" means the holiday tone- actuating fora projections on the circumference . in -pi ^ seadaff arrangement allows, thereby doing the Be *. an ifenropielrorx-icht £ fö? the handles "U attu" S2i and that "ine ör ^ ppa be" wrgtashen list »di« old ais to b * active; ig »n, .'V-- '. ■■■ - ■■■. " Hüokvorrlaötang naQh Aaepruoh 12, t & dustiH Iaet ?? uffl »nte aaehalJiaades ¹ crap» #si « mä when asten Auapruoli 11 b £ » Mmm * in the Si® Sanält #is «ufigen. damn& BATH ORIGINAL 20-9-824- / 0-087 / 1660936 in a position that they the ifaatererfordemiosen. * β · to be reoht 15 · return device according to Claim 11-, characterized in 'that the butt ends dor cleat © eo to be ordered such that they ^τ with Geradführun βη, kubüir.cmwirken ,, which periodically A direction by squatting in Lin · are moved and is turned acts on the * Carry out a back and forth movement when they come into engagement with the butt ends on the plates in their trajectory, whereby the back and forth movement of the guides serves to unlock the play lever so that the KlinkennitteL takes place « 16, RUekirorrlehtung according to claims 1 to 15 »characterized in that with el are provided, of which aua a hand control; takes effect that the Kückbewegungunjßn of the main chain and which furthermore act on the pawl collar, duo it be prevented from bringing the back part forward if the Evidence of the main chain through the named of Manual control is interrupted 17 * Charging device according to claim 16 "daduroh gekeon /, eichnet, dad Ubersplelmittsl are available" around the Pawls «to bring about release and further between 209824/0067 bad ORIGINAL the manually operated part and the transfer media there is an activation connection which is related to this has the effect that the dubbing of the Klinkenraitttl always then takes place »if the manually operated part is moved to interrupt the return movements of the main chain, · 209824/0067 rs e ι fe