DE2335543A1 - MARINE DRIVE DEVICE - Google Patents

Description

Patent attorneys Dipl.-Ing. F.Weickmann,

Dipl.-Ing, H.Weickmann, Dipl.-Phys. Dr. K. Fincke Dipl.-Ing. F. A. Weickmann, Dipl.-Chem. B. Huber

SAHA t MÜNCHEN S6, DEN 2 3 3 5 O 4 J

POST BOX «60 820

MÖHLSTRASSE 22, NUMBER 4 «39 21/22

<983921/22>

OUTBOARD MARINE. CORPORATION, 100 Seahorse Drive, Waukegan, Illinois 60085, V.St.A.

Ship propulsion device

The invention relates generally to marine propulsion systems, for example outboard engines and radial engines ·. In particular, the invention relates to backstop assemblies and arrangements to hold a swivel arm and a drive device connected to it in an elevated position compared to the normal running position

Examples of known backstop arrangements with associated controls are in US-FS No. Re. 25 048 issued on 3/10/1961, and in US-PS Hr. 3,016,869, issued on 16.1 * 1962, as well as in the US-PS Mr. 3,096,058, issued on 2.7.1963, and in US-PS Mr. 3,158,346 issued on November 24th 1964, described.

Known arrangements for holding a swivel arm and the associated drive unit in an elevated position are from US-PS Hr. 3 666 218, issued on May 30, 1972, and U.S. Patent No. 3,371,893, issued 5 * 3 * 1968, can be seen. So far, swivel arm assemblies used an arm that was pivotably mounted on the cross member and an Ir-shaped one

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Had slot that received a bolt which was attached to the swing arm.

Of particular importance for the present invention is the lack of a single control in the previously known arrangements, which controls both the backstop and the retaining arrangement for the swivel arm.

You invention provides a ship propulsion device with gate Means which are connected to a backstop and to a swivel arm lock for coordinated control to deliver the backstop and the swivel arm lock

In the embodiment of the invention shown, this control has an operating lever on the swivel arm is articulated and is functionally connected both to the backstop and to the locking element for the pivot arm, which is pivotably attached to the pivot arm and has a slot in which one of the cross member from. standing bolt is added. Means are provided to selectively bias the operating lever in two directions, depending on the position of the operating lever

In detail, in the exemplary embodiment shown, the backstop has an element which, relative to the swivel arm is movably supported and can be brought into engagement with a push pin ■ Rod connected to the arm, with such an arrangement that the non-return element is gripped by adjusting the position of the arm with the aid of the operating lever the operating lever is loaded and thereby the operating lever depending loading according to its position in opposite directions of rotation.

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burdens.

The connection of the swivel arm locking element with the Cross member and the pivot arms causes a pivoting movement of the locking element relative to the pivot arm when the The swivel arm is swiveled relative to the cross member The means to connect the operating lever to the locking element have an actuating pin, which is from the locking element protrudes and runs in a path between two curved, spaced surfaces that are shared with the operating lever Movement are connected and are arranged in such a position that they are engaged with the actuating pin come to such a joint movement of the locking element and the operating lever depending on such a ' gen relative pivotal movement, the actuating pin engaging the spaced surfaces. Furthermore, a spring is connected to the operating lever in order to selectively rotate it in opposite directions depending on its position to bias and thereby forcibly an engagement between the spaced surfaces with the operating lever are connected, and produce the actuating pin, so that in addition the locking element for the pivot arm relative is biased into its locking position

The main object of the invention is to provide a ship propulsion device provide a single mechanism for the coordinated actuation of a releasable backstop and has a mechanism for releasably locking a swivel arm and the drive device connected to it serves in an elevated position. The invention also aims to create a new control mechanism for a releasable backstop This control mechanism is also intended to regulate the movement of an element, the one swivel arm and the one connected to it Drive device locked in an elevated position

Further details and advantages of the invention result from the following description of an exemplary embodiment

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based on the drawings. Show it:

Figure 1 is a fragmentary side view of an outboard motor with the features according to the invention;

Pig 2 is an enlarged horizontal sectional view of FIG line 2-2 of Fig. 3J

Pig 3 is an enlarged rear view of various components the outboard motor shown in Pig.1;

Fig. 4 is an enlarged, partially fragmentary and senematic view View of some of the components built into the outboard motor of Figure 1, these components are shown in their normal working position;

Pig. 5, 6 and 7 of Pig · 4 are similar views, but with the Components are shown in different positions

In the Pig an outboard motor 11 according to the invention is shown, which has a cross bracket 13 which can be fastened to a cross member 14 or another carrier of a boat hull is. With the cross bracket 13 is a. Swivel arm 19 connected in such a way that it can be swiveled vertically about a tilting axis 17. On the pivot arm 19 is a drive unit 23 'one Has propeller shaft 27 with a propeller 29, connected in such a way that it is around a king pin 21 together with the pivot arm 19 can pivot vertically and horizontally.

Furthermore, the outboard motor 11 has a pressure pin 31, which can optionally be received in two laterally spaced rows of holes 33 in the cross bracket 13 in order to in this way the angle between to set the cross member 19 and the drive unit 23 when the drive unit 23 is in its normal running position (Pig, 4 and 5) · Due to the swivel connection with the tilt axis 17, the drive unit 23 and the associated Swivel arm 19 is pivotable from the normal working position of FIGS. 4 and 5 into an elevated position, which is shown in FIG is. In this position, the drive unit 23 and the pivot arm 19 connected to it can prevent a return to

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the normal working position must be secured · The propeller 29 is usually out of the water · In addition the drive unit 23 and the swivel arm 19 can normally still go a little further upwards via the raised position be swiveled »as can be seen from Pig» 6 ·;

The outboard motor 11 contains a backstop 41 (see FIGS. 3, 4 and 5) which, when inserted, prevents that the drive unit 23 pivots upwards from its normal working position. This ceases the operation of the outboard motor relieved in the return. When the ship encounters an underwater obstacle while moving forward, and when the obstacle is exercised If the shock is sufficient, the backstop 41 is automatically released so that the drive unit 23 can swing upwards. In the previously known constructions, manual actuation means are provided in order to release the backstop 41, so that the drive unit 23 can then be pivoted into the raised position by hand

In the construction shown, the backstop 41 has different Features of the US FS No. Re. 25 048 on · Of course you can other backstop constructions can also be used. In the construction shown, the backstop 41 has two Arms 43 (Fig «3t 4 and 5) at 44 on both sides of the pivot arm 19 are supported coaxially and pivotably · At their front ends, the arms 43 are via a pivot pin 49 connected to a yoke 47 so that they can be pivoted with respect to the yoke. As can be seen, the yoke 47 has a transverse web 51 and spaced parallel legs 53, which from the transverse web 51 protrude forwards and backwards and are arranged laterally outside the arms 43 · A pivoting movement of the yoke 47 around the pivot 49 counterclockwise according to FIG. 4 is prevented by corresponding stops 57, which protrude from the arms 43 and are in contact with the upper edges of the legs 53. On the front part of the legs 53 a hook 59 is formed in each case, which is connected to the pressure pin

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31 comes into engagement, 'by a pivoting movement of the drive unit 23 and the associated swivel arm 19 to be releasably locked upwards "

Means are provided for the arrangement of the yoke 47 and the arms 43 about the pivot axis 44 according to FIG Bias Pig.4 counterclockwise in order to keep the hooks 59 releasably engaged with the pressure pin 31. By doing Embodiment shown, these means comprise one or more fairly strong tension springs 61, which are attached to their lower Ends are connected to the rear parts of the legs 53 and anchored at their upper ends to the pivot arm 19 Bind · The return lock 41 is drawn by the strong springs 61 into engagement with the pressure pin 31, so that an upward movement the drive unit 23 and the swivel arm 19 connected to it from the normal working position of FIG. 4 is prevented will·

Veiter means are provided to the drive unit 23 and to releasably lock the associated swivel arm 19 in the raised or elevated position. There are various constructions for this possible «In the illustrated construction these means comprise a mechanism (see Fig. 4), which is a Locking plate 77 is pivotable at 78 (see Figures 3 and 4) is attached to the pivot arm 19 and is provided with a slot 79. This slot has an approximately vertical length Branch 81 and a short branch 83 projecting forward from the lower end of the long branch. In the locking plate 77 is also still a catch 87 is provided, which is in the junction between the vertical long branch 81 and the forward short branch 83 protrudes downwards.

In the slot 79, a locking pin 89 is received, which on is attached to the cross bracket 13 and protrudes therefrom and is movable in the slot 79. When the drive unit 23

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and the swivel arm 19 connected to it is in its normal working position the locking pin 89 is at the top of the long vertical branch 81 of the slot (see Fig. 4) · If the drive unit 23 with the swivel arm 19 are locked in the raised position (see Pig · 7), the Locking pin 89 in the forward branch 83 of the slot in contact with the upper edge 90 of the slot branch 83 the downwardly protruding detent 87

According to the invention, a selectively operable control is provided in order to manually release the backstop 41 at the same time and automatically the locking that the drive unit 23 and the swivel arm 19 connected to it in the raised Holds position, to tension. This tensioning causes the drive unit 23 to swing upward from the normal The working position is locked in the raised position The selectively actuated control can alternatively also be set so that that it releases the locking of the drive unit 23 in the raised position and the backstop 41 in this way brings that when the drive unit 23 and the pivot arm 19 connected to it return to the normal working position, they automatically re-engage with the pressure pin 31 comes·

Various other constructions can be used for this purpose. In the present embodiment the selectively operable control comprises an operating lever 71 which has a handle 73 and at 78 together is articulated with the locking plate 77 coaxially quite high on one side of the pivot arm 19, so that it is in a position shown in FIG working position shown and in a locking position shown in Pig · 7 is pivotable.

Means are provided to connect the operating lever 71 to the backstop 41 in such a way that the operating lever 71 is selectively biased. Next are how later

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is explained, "Means are provided to the operating lever 71 functionally connect to the lock for the drive unit in such a way that the locking plate "77 is also selectively biased. These are within the scope of the invention different arrangements possible. In the illustrated construction, the connection between the operating lever comprises and the backstop (see Pig. 2, 3 and 4) an angle lever 91, the arms 93 and 97 at an angle has and is rigidly connected to the operating lever 71 for common movement, as well as a connecting rod 99 »the its upper end is hinged to the arm 93 of the bell crank and at its lower end has a hook 111 which with his Mouth 113 can be suspended in the underside of the transverse web 51 of the yoke 47

The optional preload takes place partly through the above-mentioned strong springs 61 of the backstop together with a lighter spring 117 (see Figure 4), which at its lower end with the transverse web 51 of the yoke 47 and at its upper end with a central part in the form of an eyelet 112 on the connecting rod 99 is connected so that it pulls the connecting rod 99 relative to the pivot arm 19 downwards and thereby the arrangement consisting of the angle lever 91 and the operating lever 71 is preloaded into a pivoting movement powerful springs 61 of the backstop also serve to lower the connecting rod 99 under certain circumstances to burden, as explained earlier.

As for the details of the attachment of the operating lever 71 and the bell crank 91, the bell crank 91 is (see Fig. 2) attached to the rear of the operating lever 19 behind the king pin 21. A solid link between the operating lever 71 and the bell crank 91 is made by a shaft 131 which protrudes through a bushing 133, the is mounted in spaced bores in the pivot arm 19.

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Means are provided to allow the operating lever to move 71 from the normal working position according to Pig · 4 counterclockwise to limit the locking position of the operating lever 71 for the drive unit

For this purpose, various arrangements are possible within the scope of the invention · In the illustrated example is for movement limitation a nose 141 (see FIGS. 2 and 3) is provided, which of the arm 97 of the angle lever 91 in the path of movement of the Connecting rod 99 extends in when the connecting rod 99 according to Pig * 5 is left over the axis 76 for the pivoting movement of the operating lever 71 and the bell crank 91 lifted out This movement also serves to raise the connecting rod 99 so that it releases the backstop 41. Of the Contact of the nose 141 with the connecting rod 99, coupled with the movement of the drive unit 23 in the raised position, the locking position of the operating lever 71 for the Drive unit.

It should be noted that the range of angular movement of the operating lever 71 and angle lever 91 arrangement relative to the pivot arm 19 between the normal working position and the locking position of the drive unit (i.e. between Figures 4 and 7) is about 135 ° and that, when the operating lever 71 and the angle lever 91 assume the normal working position of the Pig.4, the arm 93 of the angle lever extends horizontally to the rear when, on the other hand, the operating lever 71 and the angle lever 91 are in the locked position of the drive device, this arm 93 forwards in the other direction from the axis 78 of the operating lever and Angle lever existing arrangement stands away. The movement of the arrangement of operating lever and angle lever brings so a displacement of the top of the connecting rod 99 via the dead center from one side to the other of the pivot axis for the arrangement with it, whereby the operating rod 99 is attached.

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is lifted and the backstop 41 releases.

As already mentioned, funds are also earmarked for the To connect operating lever 71 and the locking mechanism for the drive unit. For this purpose, different within the scope of the invention Arrangements possible In the example illustrated, these means comprise an engagement between the operating lever 71 and the locking plate 77, by which a preload in the direction of rotation from the operating lever 71 on the locking plate 77 is transmitted and the operating lever 71 during the movement of the drive unit 23 and the one connected to it Swivel arm 19 is pivoted on a movement of the locking plate 77 out will. There are two for this in the example described radial control surfaces 151 and 153 are provided on the operating lever 71 (see FIG. 4), which are spaced about 200 ° on the axis and are connected at their radially inner ends to a curved surface /, 157, which are concentric to the pivot axis 78 of the control lever is attached

A pin 159 protrudes from the locking plate 77 and extends into the surroundings of the curved surface 157 protrudes to selectively come into contact with the control surfaces 151 and 153, respectively, when a relative rotation between the operating lever 71 and the locking plate 77 takes place.

The selective bias in the direction of rotation applied via the connecting rod 99 to the operating lever 71 is also still sometimes via the contact between the pin 159 on the locking plate 77 and the control surfaces 151 and 153 on the operating lever 71 applied, the locking plate 77 being biased in a pivoting movement about its attachment to the pivot arm 19.

The pin 159 on the locking plate 77 and the control surfaces 151 and 153 on the operating lever 71 are arranged in such a way that, when the control lever and angle lever are in their normal working position are, the pin 159 is in contact with the control surface 151 · Accordingly, the preload serves in the direction of rotation

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the operating lever 71 and the angle lever 91 as a result of after downward force in the connecting rod 99 * if the Operating lever 71 has its working position, also in addition, the locking plate 77 relative to the pivot arm 19 in a clockwise direction to charge"

In operation, the inventive arrangements function as follows: When the drive unit 23 is in its normal working position (FIG. 4), the backstop 41 of the strong springs 61 held in contact with the pressure pin 31. When the operating lever 71 is in the working position, lies the hook 111 of the connecting rod 99 a little below that Crossbar 51 of the yoke 47 of the backstop. In addition, the light spring 117 is used between the crosspiece 51 and the Connecting rod 99 is inserted, in addition, the connecting rod 99 down to pull the hook 111 slightly below and out of engagement with the transverse web 51 of the yoke 47 in position hold and at the same time the angle lever 91 and the operating lever 71 connected to it as shown in FIG. 4 in a clockwise direction load so that the operating lever 71 is releasably held in its working position. At the same time there is the Locking pin 89 at the upper end of the slot 79 in the locking plate 77. The on the angle lever 91 and the operating lever connected to it 71 counterclockwise force exerted according to FIG Locking plate 77 to bring protruding pin 159 into engagement, so as to the locking plate 77 relative to its pivot bracket on To load swivel arm 19 clockwise.

In order to lift the drive unit 23, the operating lever 71 is opposite to FIG. 4 from its normal working position Moved clockwise until the tongue 141 (see Fig. 2 and 3) comes into contact with the connecting rod 99 on the arm 97 of the angle lever, in order to move the operating lever 71 in a central, to bring the backstop-releasing position into position,

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which is shown in Figo5. The control surfaces are in this position 151 and 155 from the pin 154 that from the lock plate 77 protrudes, spaced apart.

By moving the operating lever 71 from the normal working position of Fig.4 in the clearance position for the backstop Figo5 the connecting rod 99 against the Force of the strong spring 61 and raised against the limited effect of the light spring 117, so first the mouth 113 to bring the hook of the connecting rod 99 with the yoke 47 in contact and then to lift the yoke 47, whereby the , Backstop 41 is released · When the control lever is in the release position for the backstop (Fig.5), the force of the strong springs 61 and the light spring is used 117 to this, the arrangement consisting of the operating lever 71 and the angle lever 91 according to FIG. 5 resiliently counterclockwise to load and thereby keep the operating lever 71 in the release position for the backstop.

By the subsequent upward movement of the drive unit 23, i.e. the pivoting movement relative to the tilting axis 17 counterclockwise (see Fig. 1, 4-7), the locking pin moves 89 in the slot 79 of the locking plate 77 downwards. This movement of the locking pin 89 in the slot 79 in conjunction with the first phase of the upward movement of the drive unit 23 and the pivot arm 19 connected to it is used to Locking plate 77 clockwise relative to the pivot arm 19 according to FIG to pivot until the pin 159 protruding from the locking plate 77 against the control surface 153 on the operating lever 71 pushes (see Fig. 6). Thereafter, the force of the springs 61 and 117 acts on that of the operating lever 71 and the angle lever 91 existing arrangement that wants to pivot these parts counterclockwise, also over the control surface 153 and the pin 159 on the locking plate 77 in such a way that

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2335B43

she wants to pivot this locking plate relative to its attachment to the pivot arm 19 counterclockwise. One however, such movement of the lock plate 77 is caused by the contact of the lock pin. 89 with the leading edge 163 of the vertical long slotted branch 81 prevents.

With the continuation of the upward movement of the drive unit 23 and the pivot arm 19 connected to it in the increased position, the locking plate 77 is rotated further clockwise relative to the pivot arm 19, the pin 159 being clockwise moves and pivots the operating lever 71 clockwise, although the strong springs 61 and the light spring 117 act in the opposite direction. With this clockwise movement of the operating lever 71, the connecting rod 99 is raised further. The movement of the operating lever 71 clockwise with the continued upward movement of the drive unit 23 and the swivel arm 19 connected to it however, it is not sufficient to move the connection between the arm 93 and the connecting rod 99 past the dead center. Consequently pull the strong springs 61 and the light spring 117 formed from the operating lever 71 and the angle lever 91 Arrangement further counter-clockwise according to Figo5 and 6 Due to the contact of the control surface 153 with the pin 159, the locking plate 77 is at the same time counterclockwise resiliently loaded about its pivot point on the pivot arm 19. As mentioned earlier, such movement is the lock plate 77, however, prevented from contact of the locking pin 89 with the front edge 163 of the vertical slotted branch 81

Shortly before the drive unit 23 reaches the highest point of its motion space in its upward swiveling (see FIG _o 6), removes the locking pin 89 of the vertical Schlitzastes effected from the lower end of the front edge 163 81 in the lock plate 77 and the biasing of the locking plate 77 that the Locking plate rotates counterclockwise and the locking pin 89 runs into the forwardly protruding Schlitzaat 83.

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If the drive unit 23 then falls a little into the holding position of FIG. 7, the locking pin 89 comes with the upper one Edge of the forward slotted branch 83 in contact, whereby a further downward movement of the drive unit 23 and the pivot arm 19 connected therewith is releasably prevented, so that the drive unit 23 and the pivot arm 19 are locked in the raised position

The movement of the locking plate 77 counterclockwise to its holder on the pivot arm 19, which the locking pin 89 brings into the Schiitzaat 83 protruding towards the larne, also serves also to turn the pin 159 counterclockwise. This has the consequence that the operating lever 71 and the angle lever 91 formed arrangement under the force of Btarken springs 61 and the light spring 117 can rotate counterclockwise in the same direction and also one performs slight rotation.

While the drive unit 23 and the pivot arm 19 connected to it are held in the raised position, remain the operating lever 71 and the angle lever 91 are further loaded, so that these parts can be released by the springs 61 and 117 be held in the locked position of the drive unit · While holding the drive unit and the associated With the swivel arm in the raised position, the springs 61 and 117 act on the locking plate via the operating lever 71 77 and pre-load them in a counter-clockwise rotation relative to the swivel arm.

When the drive unit 23 and the swivel arm 19 connected to it are returned to their normal working position are to be and the backstop 41 is to be brought into engagement with the pressure pin 31 again, the operating lever 71 pivoted clockwise by hand until the control surface 151 comes into contact with the pin 159 on the locking plate 77. In this position is the arm 93 of the angle lever in a

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lowered position under the normal working position, there a clockwise rotation of the locking plate 77 relative to the Swivel arm in the course of the last phase of the upward movement of the drive unit 23 and the swivel arm 19 preceded is. With the arm 93 lowered in this way, the connecting rod 99 is displaced relative to the pivot arm 19 into its lowest position, so that the backstop 41 can rotate about the pivot connection 44 under the force of the strong springs 61, until stops 167 on the arms 43 lie against stops 169 on the pivot arm 19. This contact brings the hook 59 on the backstop 41 in the correct position to work with the Push pin 31 to come back into engagement when the drive unit 31 and the pivot arm 19 connected to it in the normal Return to work position.

The contact of the stops 167 ari the arms 43 with the stops 169 takes place on the pivot arm 14 just before the connecting rod 99 reaches its lowest position; accordingly raises the movement of the operating rod 99 their hook 111 from the crosspiece 51 of the yoke 47 of the backstop. Next is Due to the contact of the stops 167 with the stops 169, the connecting rod 99 briefly no longer has the force of the springs 61 and is only pulled down by the force of the light spring 117. The effect of the light spring 117 also serves to the arrangement consisting of the operating lever 71 and the angle lever 91 in the To load releasably clockwise, as well as due to the contact of the control surface 151 with the pin 159 on the locking plate 77 also to preload the locking plate 77 relative to its swivel attachment on the swivel arm 19 in a clockwise direction However, such a movement of the locking plate is restricted by the locking pin 89 running up against the rabbit 87.

In order to lower the drive unit 23 and the swivel arm 19 connected to it into the normal working position, the drive unit easily from their propped elevated position

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raised and this movement serves to the locking pin 89 in the forwardly projecting slot branch 83 of the locking plate 77 to lower until it rests against the lower surface 173 of this branch 83, whereby the locking pin 89 to lie under the catch 87 comes and can move from the forward branch 83 to the bottom of the long vertical branch 81 of the slot. The force exerted by the light spring 117 pivots the locking plate 77 in a clockwise direction about its pivot mount the pivot arm 19 and thereby brings the locking pin 89 to the bottom of the vertical slotted branch 81 and up to contact with the Rear edge 177 of this sole seat branch.

Now the drive unit 23 and the swivel arm 19 connected to it can be lowered into the normal working position During the downward movement, the locking pin 89 moves to the top of the vertical slotted branch 81 in the locking plate 77 up. At the same time, due to the geometry of the pivot points, the locking plate 77 is relative to the pivot arm 19 against the Turned counterclockwise by force of the light spring 117, so that the operating lever 71 and the angle lever 91 to return the existing arrangement to the normal working position (see FIG. 4), while the arm 93 of the bell crank and the Lift connecting rod 99.

With the full return of the drive unit 23 and the swivel arm 19 connected to it into the normal working position the hook 59 of the backstop 41 is moved over the pressure pin, so that the backstop 41 comes into engagement again. As a result of this renewed intervention, the backstop 41 is raised and lifts the stops 167 from the stops 169. When the backstop 41 is engaged and the out of the Operating lever 71 and the related angle lever 91 existing arrangement assumes their normal working position, the mouth 113 of the hook 111 of the connecting rod 99 is located under the lower surface of the transverse web 51 of the yoke 47

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and the connecting rod 99 is pulled down to keep the operating lever 71 and bell crank 91 in the normal working position to hold, whereby only the light spring 117 is effective

Changes to the embodiment shown and described are possible within the scope of the invention.

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Claims (10)

1Ω * Expectations .JSchiffsantriebsvorrichtung with a befestigv- the hull 'cash strap - characterized by a swivel arm (19) »the one with the bracket (13) in such a way is connected that it is pivotable relative to this between a normal working position and a raised position is, by a backstop (41) attached to the swivel arm (19) »which is attached to a pressure pin (31) on the bracket (13) can be brought into releasable engagement, by a lock (77,79 »89) on the swivel arm (19) and on the bracket (13) that lifts the swivel arm in the Holding position, as well by Yorrichtungsteile (71.91 »93.99) with the backstop and the lock are connected and a coordinated control of the backstop and the lock for the Provide swivel arm. 2. Device according to claim 1, characterized in that the controlling device parts comprise an operating lever (71), which is pivotally connected to the swivel arm (19), as well as parts (93,99 »111,113) that the operating lever with the Connect the backstop (41), also parts (151,152,159), which connect the operating lever with the lock, and members (61,117) which selectively depending on the operating lever preload its position in opposite directions of rotation. 30988W0634 3. Apparatus according to claim 2, characterized in that the locking device for the swivel arm has an element (77) which is pivotably articulated on the swivel arm and which is connected to the bracket (13) is connected such that it is in turn relative to the bracket by a pivoting movement of the pivot arm relative to the bracket Swivel arm is pivoted, and that carries a pin (159), and that to the connecting the operating lever with the lock Split two control surfaces spaced apart on an arc (151,153), which are connected for common movement with the operating lever and are arranged in such a way that by a relative pivoting movement between the operating lever (71) and the element (77) with the pin (159) can be brought into contact. 4 * device according to claim 2 or 3 »characterized in that that the backstop (41) is supported movably to the swivel arm it has element (47) which can be brought into engagement with the pressure pin (31), and there to the operating lever with the backstop connecting parts an arm (93) belongs to the joint movement with the operating lever is connected, as well as a rod (99) connected to the arm (93) with a contact part (111,113) which the element (47) the backstop detects when the arm is brought into the locked position using the operating lever. 5. Apparatus according to claim 4, characterized in that the parts which the operating lever (71) selectively in opposite Preload directions, a suspension (61, 117), which connects the pivot arm (19) to the rod (99) in such a way that the rod from the operating lever is pulled away. 6. Apparatus according to claim 4 or 5, characterized by smock (141) on the operating lever (71) connected to the rod (99) interact and the range of motion of the operating lever limit in one direction. 309884/063 4. 7. Device according to claim 2 or one of the following claims, characterized in that the locking of the swivel arm has a supporting element (77) which is connected to the swivel arm is pivotally connected, and that the operating lever (71) and the supporting element (77) on a common axis (78) are held on the swivel arm « 8. The device according to claim 7, characterized in that the supporting element is a locking plate (77) with a approximately L-shaped slot (79) is provided, in which an am Bracket attached locking pin (89) engages. 9. Apparatus according to claim 8, characterized in that in the slot (79) a detent (87) protrudes which the swivel arm holds in the raised position 10. Apparatus according to claim 4 »characterized in that the rod (99) performs an over-center movement. 30988 W0634 overtop