DE2158787A1 - Automatic device for starting an internal combustion engine by means of a spring starting device - Google Patents

Description

DIPL.-ING. KLAUS BEHN

DIPL.-PHYS. ROBERT MÜNZHUBER "2158787

PATENT LAWYERS

8 MUNICH 22 Wl DENMAYERSTRASSE 6 TEL. (0811) 222530-295192

November 26, 1971

A 567/568 71 Ml / ib

MeCULLOCH CORPORATION, 6IOI West Century Boulevard, Los Angeles, Calif. 90045 / USA

Automatic device for starting an internal combustion engine by means of a spring starting device

The invention relates to a starting system for internal combustion engines, in particular a device for controlling the starting by means of spring force by compression igniting engine.

The diesel engine is currently used in a wide range of applications to drive a wide variety of devices such as cement mixers, pumps, generators, and vehicles such as boats. It has long been known that starting a

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cold diesel engine is generally difficult. Numerous auxiliary measures and devices have been developed to facilitate the start of a cold diesel engine, such as the use of already compressed air, the introduction preheated air and the injection of various liquids. All of these attempts to facilitate the ^ Cold starts of diesel engines require a considerable amount of time

additional auxiliary effort and are generally expensive if they have to be installed in an ordinary diesel engine, or create additional problems. The reliability of such jump starters is often far less than desirable, especially when used outdoors or in cold remote areas, and this is where reliability is vital.

Direct start of a diesel engine by hand As far back hard for a full-grown man and can not be done practically by a woman or a child *. However, diesel engines that have to be cranked by hand have a very great disadvantage, even if they are provided with the above-mentioned auxiliary starting devices. If the diesel engine is cranked too slowly when starting, there is a risk that the compressed gas will escape from various gaps in the cylinder chamber, and the cold walls of the cylinder chamber have long enough time to pass through

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the compression to cool heated gases again, so that ignition and start is prevented. Another disadvantage, The thing that occurs when the crankshaft is cranking too slowly while the engine is starting is that the fuel injection the fuel mist is not sprayed finely enough into the combustion chamber. This also becomes good ignition and prevents the engine from starting.

It can therefore be said quite generally that reliable and rapid ignition of an ignited by compression Internal combustion engine is only guaranteed if the engine cranks very quickly during the starting process will. In addition, it must be seen as advantageous if a system could be created. that it too enables a woman or child to have the energy they need to To apply crankshaft cranking for the starting process. This advantage is of particular importance when using it a diesel engine in small boats or as an auxiliary machine in large boats or for driving electrical emergency power generators.

Finally, the invention is also aimed at eliminating the problems and unreliability that were frequently required up to now to exclude inclined control devices. From the-

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Therefore it is particularly desirable to have a control device to create that is compact, reliable, and relatively inexpensive, and that is capable of a number of for the Starting process and rewinding the spring to carry out the necessary operations yourself.

Most importantly, it can be said that according to the current state of the art, a more compact and reliable Start control mechanism is needed, which is functional with little effort, only a small one Takes up space and can be easily accommodated on the motor housing or frame itself.

It is therefore the object of the invention to provide an automatic system that, when starting an internal combustion engine whose crankshaft rotates at high speed and that a priori many difficulties that are present in the present known institutions occur. The invention is also intended to provide an automatic system for starting an internal combustion engine can be created with a starting spring, which works more reliably than the known spring starting systems. Such a spring starting system should be particularly suitable for cold starting a diesel engine. aside from that this system is intended to ensure that the engine is cranked very quickly during starting. Next will be the

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Task seen in creating such a spring starting system, that of a prau or a little boy can be actuated with the same reliability and for the purpose of faster ignition than if it were by a full-blown Man is served. In addition, such a pedestart system according to the invention is intended to replace the existing ones common facilities of internal combustion engines can be added. The system according to the invention is intended also be relatively straightforward and easy to manufacture and install. In addition, it is desirable to have such a To create a system in which the starting spring is automatically rewound, but while overwinding the spring is prevented. And finally, with the invention, a pederstart system is to be created with the help of it As little gas as possible can escape from the cylinders of the engine, the compressed air as little heat as possible releases to the cold cylinder walls and there is sufficient pressure so that by not turning the Crankshaft the fuel injected through a nozzle is sprayed favorably.

These objects are achieved in an automatic system for spring starting an internal combustion engine according to the invention created by providing a starter spring in driving connection with the crankshaft of the engine.

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A drive for rewinding the spring connects the crankshaft to the spring and rewinds it when the crankshaft rotates while the engine is running. A special mechanical control linkage is provided to release the spring to start the engine and to control the rewinding of the spring after the ^ The engine has started. This mechanism rotates, expands, contracts in a very specific way carry out the necessary control functions depending on the individual movements of a control rod.

A specific embodiment of the invention is described in detail below, so that its Features, properties and advantages become clearly evident again. Show it:

Fig. 1 is a section through a spring start system in upright position;

FIG. 1a shows an enlarged detail of the control lever mechanism from the arrangement according to FIG. 1 according to section lily 1a-1a in FIG. 4;

Fig. 1b is an enlarged perspective view of parts of a clutch assembly shown in the system of Fig. 1 is included, these parts in the axial direction apart are drawn;

FIG. 2 shows a section along line 2-2 in FIG. 1; FIG.

5 shows the arrangement shown in FIG. 1 according to section

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to line 3-3;

4 shows the control device for rewinding the spring and for triggering, the spring is here in a tense position;

FIG. 5 shows the control mechanism from FIG. 4 at the moment triggering the starter spring to start the internal combustion engine;

FIG. 6 shows the control mechanism from FIG. 4 in a position in which a stop start for a on the crankshaft seated arm is so that the rotation of one end of the spring is stopped so that the spring is wound up again when a shaft arm that is in drive connection with the spring rotates so far, that it starts at the stop run;

7 shows the mechanism according to FIG. 4, in which the arm sitting on the shaft opposes the stop start has started, whereby one end of the spring is held in place and the winding process begins;

FIG. 8 shows the control mechanism from FIG. 4, in which a The locking pin for the coupling is released for winding the spring;

FIG. 9 shows the control mechanism according to FIG. 4, in which the

Winding clutch disengaged and the starter spring tensioned again for the next starting process is; and

Figure 10 is a front view of the winding and release control mechanism the spring, as shown in Figures 4 to 9, from which a non-rotatable center plate is removed for better To get an insight into the rotating elements.

In Figures 1, 2 and 5 is the overall arrangement of the spring starting system shown for an internal combustion engine, which also has the ability to automatically rewind and tension the spring.

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The engine crankshaft 10 is rotatably mounted in the engine housing 12 by means of bearings 14. On the end 18 of the crankshaft A drive belt pulley 16 is seated in 10.

The crankshaft 10 may be connected to a motor-generator shaft 20 by a drive belt 22 that is wrapped around the pulley 16 on the crankshaft 10 and a pulley 0i that sits on the fan and generator shaft 20 which is generally above the pulley 16 lies. A generator / motor (not shown) may be coupled to end 26 of shaft 20. The generator / motor can be used as a generator to supply electrical power to the machine and auxiliaries, or as a motor to drive the shaft 20 to rewind a starter spring 28 in a manner as will be described in detail below.

So that the fan and generator shaft 20 cannot deliver any torque to the shaft 10 when this shaft 20 is through an auxiliary motor is driven, an overrunning clutch J50 is inserted into the hub of the pulley 24 so that in this example. the shaft 20 can only be rotated clockwise when on the arrangement of FIG. 1 of is seen on the left.

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As can be seen, the generator and fan shaft 20 is rotated clockwise - when the crankshaft 10 rotates clockwise as seen from left to right. The shaft 20 is here as a generator and fan shaft but it need not necessarily be associated with these elements. Instead, the shaft 20 can also drive any other rotatable element usually present in the device.

In the device is a clutch mechanism 52 provided, with the help of which the winding up of the starter spring is controlled. The clutch mechanism 32 has As can be seen from FIGS. 1 and 1b, a pair of disk-like coupling elements 34 and 36 which are free are rotatably arranged on the shaft 20. The element 34 can also be moved on the shaft 20 in the axial direction, while the element 36 by a crank arm 50, with which it is connected is prevented from such sliding movement. Elements 34 and 36 are through a compression coil spring 33 interposed therebetween is pushed apart, as shown in FIGS. 1 and 1b.

The elements 34 and 36 are engaged with each other upcoming, toothed coupling elements, the element 34 has an outer ring arrangement of

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divided coupling lugs 34a. Teeth 34a have how this can be clearly seen in FIG. 1, rounded outer faces so that the coupling engagement takes place gently. The coupling element 34 also has an inner ring of rounded ones that are also distributed around the circumference Coupling teeth 34b, this rounding likewise again facilitating the coupling engagement.

The disk element J> 6 also has a row of coupling teeth 36a distributed around the circumference. Audi these teeth 36a are rounded, as clearly shown in Fig. 1b, and they mesh with the clutch teeth 3 ^ -a when the element 3 ^ in Pig * 1 is shifted to the right.

The shaft 20 is traversed transversely by a pin 40 which is firmly connected to it and protrudes from the shaft 20 on both sides. The pin 40 has the task of coupling the shaft 20 to the disk element 34 when this is shifted to the right in FIG. 1. This rightward movement of the disk element 34 causes the pin 40 to engage the inner row of teeth 34b. The arrangement is such that the engagement of the pin 40 with the teeth of the element 34 is somewhat earlier than or simultaneously with the engagement of the teeth ~ 5ka. and 36a takes place.

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The clutch mechanism J2 also has Conical disks 42 and 44. In order to enable the parts to be interchanged, the disks 42 and 44 designed identically and rotate freely on shaft 20. Leftward movement of disk 44 is facilitated by a shoulder 20a prevented on the shaft. The left-hand movement of the disk 42 is caused by the start of its right-hand side the disk 44 is limited. The disk 42 can, however, slide to the right. Fig. 1 clearly shows that the Disc 42 usually rests on the left side of the coupling element 54, but is not connected to it. Movement of disk 42 to the right forces clutch disk 54 into engagement with pin 40 and the second Clutch disk 56, so that the shaft 20 and the coupling element 56 are coupled therewith. Part 56 is with firmly connected to an eccentric 58 which rotates with it.

The largely disc-shaped eccentric 58 preferably consists of one piece with the coupling element 56 and is molded onto it in an axial extension, so that it is rotatable on the shaft 20. In this way, when the elements 56 and 58 are rotated together with the shaft 20 an eccentric movement of the cylindrical Circumferential surface of the eccentric 58, since this is cylindrical Circumferential surface eccentric to the axis of the shaft 20

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is arranged.

As can be seen from Fig. 1, the left side of the conical disk 42 is designed as a truncated conical surface 46, which strives away from the adjacent conical disk 44 with a larger / increasing diameter. The left side 44a of the

. to the axis

nut disk 44 can preferably be at right angles /

* Ie 20 run.

If now a ramp-shaped element 48 that is attached to a Arm 78 sits (see Fig. 2), in this wedge-shaped space, bounded by surfaces 44a and 46 is pressed, then the toothed plate 54 of the clutch 52 shifted in the longitudinal direction on the shaft 20 to the right and so comes into engagement with the toothed clutch disc ^ 6 and the pin 40, whereby when the clutch 32 is closed in this way, the freely rotatable eccentric element 58 on the coupling element 56 in a clockwise direction the shaft 20 is rotated.

A ring 49 is rotatably seated on the eccentric element 38. A lever arm 50 is rigidly attached to the end thereof 52, which protrudes radially outward. The lever arm 50 is still by means of a hinge pin 50 with another link 54 connected. This i? 4 handlebar is in conjunction with the

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outer part of a ratchet mechanism 58, which is only able to transmit a force when the arm 54 is in Moved counter-clockwise (seen in Fig.J5). The ratchet mechanism 58 may "contain a standard one-way clutch.

The ratchet mechanism 58 sits on a shaft 59 *. which can have an extension for winding by hand. The shaft 59 is rotatable in the frame of the entire starter assembly used, as can be clearly seen in Figure 1. The handlebar 54 is fixed to the outer part of the ratchet 58, while the inner ratchet part is firmly connected to the shaft 59.

A pinion 60 that is toothed on the circumference is coupled to the shaft 59, as shown in FIG. The teeth of the pinion 60 engage a toothing 62 of a toothed ring on a spring housing 64. The spring housing 64 is by means of a Pin 66 firmly connected to the starter spring 28.

A second one-way clutch 57 can sit on the shaft 59, which when rotated in the opposite direction to Clutch arrangement 58, that is to say clockwise as seen in FIG. 1 from the left, comes into engagement. This creates a stepwise but controlled rotation of the shaft 59 in one

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ner direction possible when the clutch 58 by the handlebar 54 is pivoted. The clutch 57 prevents one Reverse (clockwise) rotation of shaft 59 as they do would be caused by the coiled spring 28 per se, so that this overrunning clutch can be addressed as a retaining clutch is.

The part 15 of the overall housing 12 should be fastened so that the V-belt 22 can always be kept under the correct tension. A support 15 with a longitudinal slot 17 is therefore provided on the outer machine housing (not shown). An arm 21 of the housing part 15 can then be adjustably connected to the support 15 by means of a fastening screw. An adjusting screw 25 is guided in the elvi thread 25 in the housing part 15. The adjusting screw 15 has a head part 27 which determines the suitable and correct position of the ramp wedge 48. The arm 78 carrying the wedge 48 is pulled against the head 27 of the adjusting screw by a spring 142.

The housing I5 can generally be in the starter housing the fastening screw I9 diametrically opposite Swivel axis are pivoted.

In operation, the wedge-shaped ramp element 48 is " ¹⁵ " in 209824/0707

the wedge-shaped gap between the surfaces 46 and 44a of the coupling 52 is pressed in. The shaft 20 is continuously driven by the crankshaft via the belt 22. Due to the wedge effect of the ramp element, the two surfaces 46 and 44a are pressed apart, so that the toothed coupling element y \ moves to the right and the plate 36, which is also toothed, with the eccentric 38 adhering to it engages. The eccentric 38 is then set in rotation by the shaft 20. Since the eccentric 38 has a circumferential surface running eccentrically to the fan and generator shaft 20, the outer ring 49, which is held against rotation by the lever arm 50, is set in an oscillating movement which runs in the direction of the longitudinal extension of the lever arm 50. This movement of the arm 50 back and forth causes the link element 54 to pivot the freewheel assembly 58 back and forth so that the pinion 60 is gradually rotated counterclockwise, which rotates the external teeth 62 on the spring housing 64 clockwise.

One end JO of the main spring 28 bent into an eyelet is detachably connected to a shaft part 68, while the other end 28a is bent into an eyelet and is connected to the spring housing 64 by means of a pin 66. The bent end 70 of the tongue 28 is in a radially extending groove

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73 of the shaft element 68 is used. It is not held in this groove 73 by any clamping device. The outer turn 28b of the spring 28 is closed by a rivet near the end 28a, so that a closed outer ring of the spring is created or a self-made housing. The housing 64 is freely rotatable attached to the shaft part by means of axle sections 68a. The outer spring housing 64 is thus rotated clockwise, while the shaft part 68 by an arm 74 and a stop system 72 to be described below on the Rotation is prevented so that the spring 28 is wound up.

The closing of the outer turn of the spring 28 and the hooking fastening of the inner spring end 70 i ⁿ a groove 73 greatly facilitate the assembly and maintenance of the spring part of the starter. As FIG. 1 shows, the spring 28 is enclosed between housing halves 64a and 64b. These halves engage opposite sides of the toothed ring 62 (see Figure 1).

In order to assemble these individual parts, the spring 28 is arranged around the sleeve-shaped shaft part 68, wherein the inner end 70 is inserted into the groove 73. Fig. 3 feeds recognize that the central portion 68b of the shaft part o8 is polygonal is designed and is spiral-shaped and clockwise

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gersinn expands, so that it becomes a spiral Winding core is created "

By axially assembling the components 64a, 64b and 62 The spring housing is closed around the already assembled spring with the shaft part. The insertion and Fasten the pin 6ό through in the housing halves 64a and 64b openings provided for this purpose as well as in the toothed ring 62 and through the eyelet ends 28a of the spring and through insertion and attaching further housing stiffening elements, the assembly of the spring unit is then completed. this everything is very easy because the spring has its own housing, so to speak, and the inner end is automatic clicks into place.

A special lever mechanism, shown in Fig. 2 as a whole is designated by 72, is used for automatic control the winding up and free movement of the starter spring 28 in a very specific way. This mechanism 72 is detailed in connection with FIGS. 4 to 9 still exactly.described.

It should just start the engine with the wound up Starter spring will be described. The shaft member 68

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is rotatably attached to the crankshaft 10 by means of overrunning clutches, in this case two overrunning clutches 86 and 87i of which one or more are also available could be. These overrunning clutches mounted in the same way 86 and 87 then intervene when the shaft element 68 rotates clockwise with respect to shaft 10 when viewed from the left in FIG. 1 of the arrangement will. The clockwise rotation of the shaft 10 relative to the shaft element that occurs while the engine is running, leaves the overrunning clutches 86 and 87 out of engagement, that is, in their freewheeling state.

The end of the shaft member 68 facing away from the engine has a radially protruding arm 74. Located If the spring 28 is in the wound-up state, the spring housing 64 is then opened by the ratchet-shaped arrangement 57 held against rotation, this ratchet assembly on the shaft 59 and the external teeth 62 of the on the Acts spring housing 64 seated toothed ring.

The sleeve-shaped shaft member 68, which is independent can rotate from the spring housing 64 and which is loaded in the clockwise direction by the coiled starter spring 28, is during the winding up of the shaft arm 74 at this rotation prevented from turning clockwise, which is at a stop

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bolt or a roller 76 is applied. This roller 76 represents a part of the automatic control device 72.

A manually operated starting rod 78 (in Pig. 2) is connected to this automatic control mechanism 72 via the pivot pin 80 which connects one end of the rod 78 to part of the mechanism 72. The second end of the rod protrudes from an opening 82 in the housing 12 and has a ball 84 as a handle for the operator. It should be mentioned here again that. the wedge-shaped ramp body 48 which engages the clutch J> 2 is also attached to this rod 78.

If the rod 78 is now moved upwards, the stop stop 76 for the one sitting on the shaft element 68 becomes Arm 74 disengaged in a manner as related with FIGS. 4 to 10 will be explained in detail. If the arm 74 is released, then the shaft element can move Rotate freely clockwise under the influence of the high torque of the starter spring 28 and thereby over the overrunning clutches 86 and 87 take the crankshaft 10 clockwise until the spring 28 is unwound and the engine is started is. The housing 64 is during this portion of the movement

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due to the overrunning clutch 57 held. The spring and the motor itself are coordinated in such a way that that the engine starts before the spring 28 is completely unwound. Due to the action of the overrunning clutches 86 and 87, the crankshaft 10 cannot directly include the shaft element 68 or the spring 28 connected to it while the engine is starting.

In the preferred embodiment, the control mechanism 72 is designed so that the shaft arm 7 · ^ at least six full revolutions to drive the crankshaft through six revolutions before the stop 76 is reset to stop the rotation of the shaft member and initiate rewinding of the spring. The arrangement which is necessary to effect the desired number of revolutions is shown in the following part of FIG Description explained in more detail.

If the engine does not start during the intended number of revolutions of the crankshaft 10, then there are two Possibilities for rewinding the spring for a restart of the engine provided. It can be with the end 61 of the shaft 59 a hand crank (not shown) can be connected. The shaft 59 on which the ratchet elements 57 and 58 sit, can then be rotated by hand by an operator who

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then the starter spring is tensioned again via the arrangement 58, whereupon a new start attempt can be made. It should also be mentioned that the spring 28 drives the crankshaft 10 at the same speed and torque, regardless of whether a full-grown man stretches the spring forcefully and with quick turns or a Child rewinds the spring over a longer period of time.

As a second possibility, one connected to the end 26 of the fan and generator shaft 20, not shown, can be used Motor / generator are fed by a battery and so set the shaft 20 in rotation.

Whether the spring 28 is wound up by hand, automatically or electrically, the rod 78 is always located in raised and locked position. When the rod 78 then falls, the operator knows that the spring 28 väeder is fully excited.

The following is a detailed description of the automatic control mechanism for winding and releasing the starter spring. Reference is made in this connection to Fig. H- to 10 with respect to those shown in FIG. 2

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show the control mechanism designated 72 in detail.

In Fig. 4, the rod 78 is in its lowered position shown so that the wedge-shaped ramp element 48 (Fig. 2) the take-up clutch 32 does not engage. The stop 76 for ^ the shaft arm 74 attacks this and prevents it from to be set in circulation by the tensioned starter spring 28.

In Fig. 5, the mechanism 72 is shown in the position in which the starter rod 78 is raised, that is, brought into the engine position in which the clutch 52 for the winding of the spring is engaged and the stop 76 is lifted out of the path of the shaft arm 74 so that it is in the Can rotate clockwise. The shaft element 68 and the shaft arm 74 can now via the overrunning clutches 86 and 87 thanks to the release by the stop 76 the crankshaft Turn 10.

The transmission ratios of the gears and the V-belt pulleys of the power path over which the spring is driven Rotating the spring housing 64 is rewound, are chosen so that the shaft arm 74 six full revolutions executes before a protrusion 87, which is formed on the housing 64

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det is so far that she has a tactile finger 88 that protrudes from the automatic control mechanism 72, whereby the stop for the shaft arm by a sequence of movements, which will be explained below, again is moved into its locked position. If so, then the attack is reset again and the clutch 52 is still engaged, as shown in FIG is then the spring 28 is rewound.

The automatic sequence of the lever linkage of the control mechanism 72 during its illustrated in FIGS individual phases will now be described in detail, the individual parts of the control mechanism being explained beforehand will.

In Fig. 10, the control mechanism 72 is shown without a central, non-rotatable plate F, and it is intended in FIG Relationship with the description of FIGS. 4 to 9 for convenience Reference should be made to this figure for an understanding of the operation of the rotatable elements.

Referring now to Figure 4, there is the automatic control mechanism 72 with its plurality of interconnected elemen shown th with the engine starting rod 78 via the hinge pin 80 related. The group of singles

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elements forming the mechanism 72 is arranged around the ratchet and hand crank shaft 59, and these parts are all spaced from each other in the axial direction of the shaft so that they can be accommodated depending on the design of the motor to be started. In order to further facilitate understanding of the interaction of the various individual elements, each of the elements is provided with a capital letter and each of its individual parts with a reference number, which is then given in conjunction with the capital letter so that it is clear which part denotes who should.

The element A is rotatably arranged about the shaft 59 and is connected to the starting rod 78 via the hinge pin 80 which passes through both the starting rod and the element A. The element A has a laterally protruding coupling locking pin 100A (FIG. 9), which sits in the lower area, and a pin 102A which protrudes in the upper area perpendicularly from the element A on one side opposite the end on which the starting rod 78 engages t _f and which engages in a slot.

A second member B is provided with a J-shaped slot 104b. The slotted pin 102A engages in this J-shaped

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gen slot 104b and can slide therein so that when the pin 102A is in the slot 104b as the Pig.4 shows by an upward movement of the starter rod 78 by an operator, which causes the element A to pivot clockwise about the shaft 59, the plate element B is moved downward against an obliquely upwardly directed force of a loading spring 106, wherein this spring engages with its other end on the (not shown) motor housing and with the element B via a connecting pin 108b is connected. The part of the element B near the connecting pin 408b can be in the form of an arm 1O9B

extend slightly outward so that the spring 106 can engage a somewhat longer lever arm. The lowest Part of the element B is designed as a feeler finger for rewinding 88, that of the protrusion 87 on the housing 64 is touched to the stop 76 after at least six revolutions to reset the crankshaft 10 again.

The position of the element A and the spring-loaded element B when it is in the raised or start position Rod 78 is in Pig. 5 shown.

One end of a third element C is with the element B is connected at its upper end by a hinge pin 110, which passes through both elements B and C. The other end

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of element C is connected to a fourth element D by means of a hinge pin 112. The hinge pin 112 penetrates the two elements C and D. The element C is pivotable about an axis 114 which is inserted in the motor housing 12 is how this Pig. 1 shows. It can also be seen from this that the element C is arranged so that at Upward movement of the rod 78 pivots the element / and thereby moves element B downwards and the element C counterclockwise be pivoted about the second shaft 114.

Fig. 5 shows the element C in a position in which it is pivoted slightly in the counterclockwise direction due to the upward displacement of the rod 78. The element D is displaced upwards due to the pivoting of the element C in a clockwise direction, and it is connected at its second end to a fifth element E via a hinge pin Ho. The stop or stop roller J6 for shaft arm 74 is at the lower end of this element E. The hinge pin 1t6 only connects the two elements D and E.

Like the Pig. 1 and 1a, the elements C and E are fork-shaped in the exemplary embodiment. Thus, the element C has the plates C ¹ and C ^fl , which are spaced apart from one another in the axial direction, through a

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Hub part C- * * ^f are in connection with each other, which is rotatably seated on the pin 114. In the same way, the element E has two plates E ¹ and E ¹¹ at a distance from one another, which ^{are connected to one another by a hub part E tfl} which is rotatably arranged on the shaft 59.

As can also be seen from FIG. 1, the elements B and A are opposite to those which are vertically aligned with one another Elements C and E increasingly shifted from left to right. Element F can be in the same plane like element B. Element D, which connects elements C and E to one another, is advantageously located in the spaces between them between the plates of these two elements.

The triggering of the start process will now be described. By upward displacement of the rod 78, the element A is rotated counterclockwise so that the element B is moved down. As a result of this downward displacement of element B, element C becomes counterclockwise pivoted about the fixed axis 114 which is fastened in the motor housing 12. The twisting of the element G clockwise shifts element D upwards and thus rotates element E in ... counterclockwise direction around the fixed shaft 59 »whereby the. ,Attack 76 is withdrawn from the shaft arm 74. The Elements

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A, B, C, D and E take those in Pig. 5 position shown a, so that the shaft arm 74 and thus the shaft element 68 are released and stretched through the Can turn starter spring 28 clockwise. The shaft element 68 then rotates via the overrunning clutch shown in FIG. 1 86 the crankshaft 10.

A lock plate F is provided in the control mechanism and is carried on the shaft 59 and axle 114. This plate F has a vertical. Directional longitudinal slot 118F near its upper end, the is penetrated by the axis 114. A lower and wider longitudinal slot 120F surrounds the shaft 59. The plate F is not connected to any of the other elements but only vertically displaceable with respect to the axis 114 and the shaft 59. In the slot 118F between axis 114 and the lower end 124F of the longitudinal slot is a helical compression spring 122 clamped. This spring 122 constantly pushes the plate F downwards.

If the starter rod 78 is now operated by an operator pulled upwards, whereby, as already explained above, the shaft arm 74 is released, so is the clutch locking pin 100A has been pivoted about the shaft 39 in the clockwise direction and in a locking groove 126F for the locking pin, which is

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rich of the lower part of the plate P molded into this jumped in *. At the first touch, the pin 100A slides on a ramp surface 128F of the plate F, which is not rotatable, moves the plate F upwards and then jumps into the locking groove 126 "F, with the spring 122 in the lower part of the slot 118f pushes the plate F downwards. There so the locking pin 100A, the the winding clutch for the spring locks, is engaged in the groove 126F, the entire lever linkage system is held, and the wedge-shaped ramp body 48 on the starting rod 78 is thereby held in the raised position, see above that the clutch 32 (Fig.1) remains engaged. If of course the engine has not started, then the motor-driven shaft 20 stops.

When the control mechanism is in that shown in FIG Remains locked position, the spring 28 rotates the shaft member 68 a few full revolutions. (In the preferred Embodiment is assumed that six revolutions are sufficient to start the engine. It understands However, the number of revolutions selected differently from engine to engine, depending on its starting properties can be).

The .released shaft arm 7 ^ enables the spring

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28 to turn the shaft member 68 around a few times. During these rotations, the shaft element 68 can then over the Overrunning clutches 87 turn the crankshaft of the engine and start the engine like this * After the engine has started is, also begins the shaft 20, which is connected to the engine is to rotate and gives the spring housing 64 * via the clutch 52, the crank mechanism 50 to 54 and the pinion 6Ö under the control of the clutch means 56 and 58 step rotation. During this rotation, the nipple 87 is rotated clockwise around the shaft 10 (viewing direction on the mechanism in Fig. 6) and then touches the left side of the tactile finger 88. At the moment of touch of the tactile finger 88 through the wart 87, which is in the position shown in Fig. 5, is the substantially horizontal slot portion of the J-shaped slot 104b shifted to the right so that the pin 102A in the vertical Section of the slot and the element B can then look upwards under the action of the spring IO6 move the position shown in FIG. The element A remains stationary because the locking pin 100A is still in the locking groove I26F is held. By moving element B upwards element C becomes clockwise about fixed axis 114 counter-rotated until it runs up against the stop pin 5, whereby element D is moved clockwise, which in turn rotates element E about shaft 59 clockwise. Like the figure,

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6 shows, the stop 76 is thereby moved back into the path of movement of the shaft arm Jk .

With the position of the stop 76 in the position shown in FIG position shown is achieved that the arm 74 against again the stop starts, as shown in FIG. 7, so that this can no longer rotate clockwise. The arm 74 and the shaft element 68 are thus fixed, and by the step-by-step rotation of the spring housing 64, the starter spring 28 wound around the shaft member 68 again.

The spring of the control mechanism is in a state in which the engine is started and the arm 74 is off Stop 76 has been detected again to put the mechanism in the state that the winding process of the Spring can begin.

While rewinding the spring is now described reference should be made to a slider seated on arm 74 and the duration of the winding process determined by the spring.

The winding of the spring begins when the elements of the control mechanism are in the position shown in Fig. 7, and is finished when these items postulate

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Fig. 9 take. Pig. 8 shows a state in which the Control mechanism is triggered so that it is in the in Fig. 9 passes over, internally the winding is finished and the parts are returned to the state according to FIG are.

The spring is wound up by gradually rotating the housing 64 around the held shaft element 68. The winding process is terminated by action a cam adjusted by a groove, the mode of operation of which will now be described.

1 and 2 it is shown that a radially extending outer surface 130 of the spring housing 64 has a spiral groove 152 carries. A finger 1j4 on a slider element I36, which is slidably seated on the shaft arm 74 on which it rests can move freely in the longitudinal direction, engages in the spiral groove. There is also 136 on the slider element a trigger finger I38 to attack the lower edge 14OF of the non-rotatable plate F when the shaft arm 74 against the stop 76 has started and the slider element I36 is in the highest possible position.

If the operator now moves the rod 78 up to start the motor, the shaft arm begins

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to rotate under the influence of the starter spring 28. The spring housing 64 is made by the in Pig. 1 shown arrangement 57 held still. If now the finger 1j54 in the spiral groove 1J2 of the fixed spring housing 64 runs, moves the sliding element 1j56 radially inwards in the direction on the crankshaft 10 until the spring is unwound.

The revolutions of the shaft element 68 caused by the spring during this time have the consequence that the Slider member 136 is in a position near the root of the arm 74, as shown in FIG.

At this point in time, the engine should start and the spring housing 64 in relation to the shaft element 68 in the Be rotated clockwise so that after the contact of the plate B by the wart 87, whereby the plate E the Arm 74 holds still again, finger 134 in the spiral groove runs outwards again and the sliding element I36 in its moved back to the highest possible position. In this position, the trigger finger I38 touches the surface 140F of the non-rotatable plate F, as shown in FIG. 8, and the locking pin 100A is released from the locking groove 126F, so that all parts of the control mechanism 72 do not are more locked and the rod 78 can freely return down to its original position. It moves

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the pin 102A in the vertical part of the slot 104b up and comes back to lie in the horizontal slot part, like Pig. 9 shows. "

The spring 28 is in the time when the sliding element has returned to its highest possible position, rewound into the tensioned position, and the release of the locking pin 100A from the locking groove 126F has made it possible for the control rod 78 to be in its lower position could return. This downward displacement of the control and starter rods under the influence of the pull of the spring 142 also causes the wedge-shaped ramp element 48 (FIG. 2) to slide out between the surfaces 46 and 4 ^ a of the coupling 32. The additional spring 143 supports this movement.

The clutch 32, which is urged apart by the spring 33, opens, so that while the shaft 20 of the Crankshaft 10 is driven via belt 22, this rotation of shaft 20 does not act on ratchet mechanism 58 is transmitted. Since the shaft element is held against clockwise rotation by the stop 76 and there the overrunning clutch 86 prevents the direct drive of the shaft element 68 from the crankshaft 10 when the Crankshaft rotates clockwise, the shaft element is

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ment 68 also set, but clockwise by the coiled spring 28 for a new start of the motor is spring-loaded.

The start control mechanism 72 composed of the elements A, B, C, D, E and F operates by various ones very special, interacting movement processes in such a way that the entire unwinding process of the spring is controlled will.

Fig, 4 can be viewed as a rest position or tensioned position of the control mechanism 72, in which the together connected lever elements B, C, D and E on the shaft 59 and the axis 114 rotatably held fcind. These with each other connected lever elements can be considered as contracted, since the element / is shortened, so to speak, because the pin 102A is in the transverse portion of the J-shaped slot 104b. In the state shown in FIG the control mechanism 72 is in a state in which he holds the starting device in the cocked position.

In Fig. 5, elements B, C, D, E are essentially counterclockwise about the axis 114 and the shaft 59 (as a result of a counterclockwise rotation of the adjusting element A) swiveled so that the engine can now be started

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can. Contains "twisting" in the animal sense also a rotational movement caused by the axis 114 and the Wave 59 is allowed.

In Fig. 6 the pinger 88 of the element B has been touched, whereby the element B could stretch and thereby the entire control mechanism arrangement, consisting of the interconnected by articulated arches Elements A, B, C, D, and E, were able to expand (element B was able to stretch by placing the pin 102A in the longitudinal branch of the J-shaped slot 104B in the topmost tip thereof).

This expansion of the control lever mechanism is a prerequisite for the starting mechanism to return to the State in which the spring is wound. The stretching of element B also causes a counter-rotation of elements B, C, D and E around axis 114 and shaft 59 "so that the stop? 6" fits into the path of the shaft arm and stops it so that the spring is tensioned can.

In all of the positions shown in FIGS. 5, 6 and 7, the locking element F serves to act as the release element To hold A in a position in which the winding clutch 32 is in engagement, namely the locking pin 100A

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is held in the locking groove 12ÖF and thus the starter arm 78 cannot move.

When the control lever mechanism 72 is then brought into the position shown in FIG. 9, this is done by touching of the tactile finger 14OP takes place, the locking element F has been moved upwards, so that the actuating element A is released. The element A is now that it has become free, the starter arm 78 free so that this can move downwards and the clutch opens. This movement of the actuator A also causes the Pin 102A returns into the transverse portion of J-shaped slot 104b, thus increasing the effective length of element B. between elements A and C is again shortened. This shortening of the lever mechanism previously turned in the opposite direction as a result of shortening .Effective! Length of the element B, which occurs after the spring 28 has been fully wound up, then sets the control lever mechanism 72 back to the starting or cocked position shown in Fig. 4 back.

Provides between the elements of the lever mechanism shown in FIG. 6 and also in FIGS. 4, 7 * 8 and 9 the element D has a very important pivot function. The axes of pins 112 and 116 are in these positions

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in the same plane with axis 114. In this arrangement the energy stored in the starter spring 28 is transferred to the control lever mechanism via the arm 74 and the stop 76 transmitted, which then transmits the force via the link element D to the axis 114 fixed to the housing. Such an arrangement of element D puts the lever linkage in a position to absorb the force of the coiled starter spring lowest possible load on the entire lever linkage «by this spring force.

The link arrangement selected in this way also produces the lowest possible force required to actuate the starter lever 78 when this is to be brought into the clamping position shown in FIG.

The crankshaft 10 of the engine thus rotates the V-belt pulley, which in turn over the V-belt 22 the upper V-belt pulley 24 is driven. Due to the V-belt pulley, the shaft 20 rotates continuously when the engine runs. If the start control lever 78 is then placed in the raised position for starting and rewinding the spring, then the wedge-shaped ramp element 48 connected to the lever actuates the clutch 52 and closes it. Are the Clutch plates 34 and 36 engaged, then through the eccentric 38 which eccentrically surrounds the shaft 20

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Crank arm 54 in an oscillating motion via a lever arm 50 set. The lever arm 50 is firmly connected to a ring element 49 which, when the eccentric 38 is rotated, back and forth is moved here.

The lever arm 50 is connected to the cube arm 54 and actuated via this the ratchet mechanism 58, the gradually and slowly rotates the spring housing 64 clockwise. The spring housing 64 rotates around the shaft member 68 and thus winds up the spring 28. Serves to hold the housing 64 between the individual rotation steps an overrunning clutch 57.

4 shows the control mechanism 72 when the starter spring is fully tensioned and the starter rod is not yet has been raised to the starting position. The shaft arm 74 rests against its stop 76 and the locking pin for the rewinding 100A is not yet in the locking groove 126? jumped in. This position can be viewed as the starting position for the mechanism 72 »whereby a stop pin 5 fixed to the motor housing limits the clockwise rotation of the lever joint element C and wherein this ensures that the axes of pins 114, 112 and 116 are in one plane. The stop pin 5 can be beneficial for this purpose, accurate alignment

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- 4o -

to be able to adjust, fixed in the motor housing be.

In Fig. 5, the start control lever 78 is then in his outermost position raised to the top, where the stop 76 moved out of the path of movement of the shaft arm 74 so that the latter is free and self

ψ rotates clockwise driven by the tensioned starter spring 28. The one in Pig. The position of the control lever mechanism 72 shown in FIG. 5 may be referred to as a twisted and contracted position. By lifting the starter rod 78, the locking pin 100A is also pressed into the locking groove 126p, so that the control lever linkage and at the same time also the starter rod 78 with the wedge-shaped ramp element are locked, whereby the winding clutch j $ 2 for the starter spring is kept in engagement. If the

t shaft arm 74 with respect to the spring housing 64 clockwise ■ sinn rotates, then a slider moves 1 ^ 6 relative to the crankshaft 10 radially inward as a finger 1 ^ 4 in a Spiral groove 1 ^ 2 on an outer face I50 of the spring housing 64 is running.

Fig. 6 shows the point in the sequence of movements of the control mechanism 72 at which a protrusion 87 on the end face 150 of the spring housing 64 the feeler finger 88 of the element

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B contacts, thereby pushing the pin 102A out of the horizontal portion of the J-shaped slot 1O ¹ JB. The element B can then move upwards under the influence of the tension spring 106, which results in a pivoting of the element C in a clockwise direction until it comes up against the stop pin 5. As a result, on the other hand, elements D and B are in turn pivoted clockwise. This movement can be referred to as counter-rotating and expanding mechanism 72. The rotation of the element E about the shaft 59 in the clockwise direction brings the stop J6 back into its starting position, so that the shaft arm 74 is stopped when, as FIG. 7 shows, it starts up against the left side of the stop 76.

In Fig. 7 the shaft arm 74 rests against the stop 76, and the rewinding of the starter spring 28 now begins. Since the spring housing 64 is in the Turning clockwise to tension the spring 28 again, is by cooperation of the finger 1 ^ 4 in the spiral groove 1j52 the slider member 1j56 on the shaft arm 74 displaced outward. It should also be remembered that the control lever mechanism by having the locking pin 100A in the locking groove 126F is held, is held locked against rotation about the shaft 59. During this time shown in FIG

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is, the starter spring 28 is wound up until the winding clutch 32 (Pig. 1) through the in Fig. 8 and 9 illustrated sequence of movements is opened.

In Fig. 8, the ramp finger 1 ^ 8 has the lower end 14OF touches the non-rotatable plate F and thus frees the locking pin 100A from the locking groove 126F. The & Lement A can now turn clockwise under the influence of the spring 143, which is stretched between element A and starter housing, pivot. Of course, the tension spring 142 also supports the pivoting movement of the element A in the clockwise direction when the locking pin 100A is released from the locking groove 126F.

Fig. 9 now shows the overall mechanism, which again in ™ the starting position shown in Fig. 4 has returned, the non-rotatable plate member F being held in the raised position by the ramp finger 138. Of the Pin 102A has slid up in the vertical part of J-shaped slot 104b as element A turns clockwise rotated, and then rotated into the horizontal portion of the slot 104b. The lever mechanism is thus turned back and has contracted a little, so it has the starting position or shown in FIG

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Tensioned position assumed, so that a new starting process with the sequence of movements shown in FIGS. 4 to 9 can be triggered.

In the foregoing description is an automatic spring starting device for an internal combustion engine set out. The overall mechanical structure of this device ensures a high degree of reliability repeated start-ups. The speed at which the spring arrangement according to the invention can rotate the crankshaft of the internal combustion engine, also ensures good starting when starting a diesel engine from cold. Of course, this device is not suitable for use in diesel engines limited.

Since the arrangement can also be stretched by hand as an option, a woman or a small one can also be used A boy can start an engine just as well as a grown man.

Since the parts of the mechanism can be easily attached to the shafts, which are usually at Internal combustion engines are available, the invention can also easily be added to the machines that have already been designed be adjusted. The compact design both

- 44 -209824/0707

In terms of catch and width, the clever interlocking, pivoting, contraction and counter-rotation as soon as the control lever mechanism 72 expands again, this property continues to be promoted.

The operation of the device according to the invention is automatic, and the active control of the winding process the spring prevents the starter spring from overwinding.

Since the starting system according to the invention is a crankshaft can rotate very quickly, the gas filling in the cylinder can neither during a compression or expansion stroke so quickly I can cool off on the cold engine walls. The high crankshaft speed also results in sufficient pump pressure when the fuel is in the combustion chamber is to be injected, and also does not give "the gas trapped in the cylinder the opportunity to through the various types of leakage on a compression ignition engine. The application spinning and counter-rotating, shortening and re-expanding lever joint and locking elements in the control lever mechanism results in a wide variety of control functions performed with reliability and in an enclosed space can be. The interaction gives the possibility that the start control mechanism can easily be adapted to existing mo-

209824/0707 "^"

gate structures can be added without the engine requires considerably more space. The pivoting and locking measures in the lever mechanism result in precise control of the positions with the least possible construction effort.

It goes without saying that the lever mechanism according to shape, size, number of elements, fastening type and so on in the Can be modified within the scope of the inventive concept.

The lever mechanism shown is described in such a way that it sits partly on the shaft 59 for a hand crank, while the coupling 32 is on a shaft for a motor generator and / or fan 20 is mounted. The waves 20.59 and the axis 114, however, are generally to be regarded as carrier shafts for the start control device, independently from the rest of the puncture, which they still take over for the machine to be started. Such modifications fall of course under the overall concept on which the invention is based, the specific embodiment represents a particularly compact and effective arrangement.

The other construction elements known per se, such as overrunning clutches and the like, can also be different be designed. The starter spring is e.g. in one

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Housed spring housing, which consists of a plurality of individual parts. This starter spring 28 can, however can also be replaced by two or more coaxially arranged springs, and the housing can, for example, from a Piece.

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Claims (7)

PATENT CLAIMS 1.] Device for controlling a starting mechanism containing a starter spring, which also has a winding device for rewinding the starter spring and a clutch for starting and ending the winding process has, characterized by first lever elements (B, C, D, E) rotatable in one and the opposite direction, which are operable to at least partially control a function of the starter mechanism, axes of rotation (114,59) rotatably carry these first lever elements (B, C, D, E), second, extensible and contractible lever elements (A, B) which can be actuated are to control at least partially another function of the starting mechanism, and locking lever elements (F), which selectively lock at least part of the first and second lever elements in a certain position, whereby at least one of the start function planes is determined. 2. Apparatus according to claim 1, characterized by a pivoting lever element (D) having at least one element the first group (C) and one of the second group (E) is connected and the power transmission through at least one - 48 209874/070 7 Part of the first and second lever elements on one of the shafts (114) directs during at least one of the control functions. 3. Device according to claim 2, characterized in that the first and the second lever elements together form an essentially closed shape (A, B, C, D, E), a control rod (78) on at least part of the lever elements Shafts (114,59) pivoted from a starting position in order to release a coiled, tensioned starter spring (28) for starting an internal combustion engine, means (87> tO6) for expanding and counter-rotating at least part of the lever elements are provided in order to move them into a position for Rewinding of the spring (28), and means (1j8,14j5,1O4b, 102A) for contracting at least W part of the lever elements when the starter spring (28) is fully wound in order to return the lever elements to the starting position again. 4. Apparatus according to claim 3, characterized by a Control rod (78) which protrudes with a first end from the motor housing (12) and can be grasped by an operator is a starter spring shaft element (68), a shaft arm (74) on the shaft element (6B) and a stop (76) -49 -209824/0707 for the shaft arm, a first auxiliary shaft (59) above the crankshaft (10) of the engine to be started, a second auxiliary shaft (114) at a distance from the first auxiliary shaft (59) * a first element (A) on the first auxiliary shaft (59) is rotatably mounted and at least one transversely protruding projection (102) at a distance from the first Auxiliary shaft (59), an articulated connection (80) of the starter rod (78) with the first element (A), whereby this is pivotable from the starter rod (78) about the first auxiliary shaft (59), a second element (B) with a J-shaped slot (104b) into which the transversely protruding projection (102A) of the first element is slidable engages while the second element (B) is pulled away from the first auxiliary shaft (59) by a spring (I06), a third element (C) rotatably supported on the second auxiliary shaft (114) and articulated with the second element (B) is connected, a fourth element (D), which forms the pivot lever arm and is articulated to the third element is a fifth element (E) articulated with the fourth element and on the first auxiliary shaft (59) is rotatably mounted and the stop (76) for the shaft arm (74) at a distance from the first auxiliary shaft (59) carries, wherein a displacement of the control rod (78) pivots the stop (76) out of the path of movement of the shaft arm (74) ^ - 50 209824/0707 * so that the shaft element (68) can rotate the crankshaft (10) under the influence of the starter spring (28) around the engine to start. 5. Device according to claim 4, characterized in that that the starter spring (28) is enclosed by a spring housing (64) connected to it and as a spiral spring with a End with the shaft element (68) and the other end with the Peder housing (64) is connected, as on a End face (1 ^ 0) of the spring housing (64), which faces the shaft arm (74), a surrounding the crankshaft (10) Spiral groove is present, a sliding element (1j56) sits freely slidable on the shaft arm (74) and a pinger (134) on the Sliding element (1 ^ 6) engages in the spiral groove (1J52) so that with relative movement between the peder housing (64) and the shaft element (68) when winding and unwinding the starter spring (28), the sliding element (156) moves on the shaft arm (74), to stop the winding process of the starter spring by actuating the plate-shaped locking element (F). 6. Apparatus according to claim 5 * characterized in that that the plate-shaped locking element (P) is not rotatable the first and second auxiliary shaft (59 * 114) is held, the auxiliary shafts (59,114) through elongated holes (120P, 124P) - 51 209824/0707 extend in the locking element (P) so that this is limited can move in one direction, the locking element by a spring (122) from the first auxiliary shaft (59) is pushed away and the sliding element (I36) on the shaft arm (74) a contact surface (I38) for the locking element (P), which interrupts the power transmission for winding up the starter spring (28) when it starts up against the locking element. 7. Apparatus according to claim 6, characterized in that the coupling (52) has two disengageable coupling halves (5 ^, 56) which during the winding of the Starter spring (28) are engaged, and the control mechanism has a locking pin (100A) on the first lever element (A) which in a locking groove (126P) in the locking element (F) depending on the movement of the starter control rod (78) jumps in, while the releasable coupling (3 ^, 26) continues to wind up due to the movement of the starter control rod (78) the starter spring (28) is engaged and that the locking pin (100A) is released from the locking groove (126F), when the starter spring (28) is fully wound up. 20982A / 0707 si Blank page