DE6602882U - FOLDABLE WALL. - Google Patents

Description

P.A. 333 058-25.6.66

PATENT LAWYERS

DI PL.-1N G. CURT WALLACH DIPL.-ING. GÜNTHER KOCH DR. TINO HAI BACH

8 MUNICH 2, DEN

OUR SIGN :! Θ 392

ϊ { ^x Hough Manufacturing Corporation

Janesville, Wisconsin / USA

_f Foldable wall

The invention relates to viand element arrangements of the type which can be set up in such a way that they can be

between spaced-apart room surfaces, such as the floor and ceiling of rooms, to

to subdivide their interior spaces. In particular .'st the Invention directed to such detachable wall elements, which can be operated between two positions in such a way that they either introduce a space into smaller ones subdivide or suppuration into an interior simply allow that the wall is temporarily moved out of the way in which it is through a train is guided.

A primary object of the invention is to provide an improved folding wall that is easy to position so g ° it can be ensured that the rooms are appropriately positioned divided.

Another object of the invention is to provide a foldable wall in which a number of wall elements are simultaneously fixed or locked with the aid of a single crank in an exposed edge of one of the wall elements v / can earth.

The foregoing and other objects of the invention have emerged from the following detailed description of a preferred Embodiment of the invention in connection with the accompanying drawings, namely show:

1 is a perspective view, polygamy according to the invention represents hinged wall;

Figures 2 and 2a are a view in elevation and in section of a Side edge of a wall element along the line 2-2 in FIG. 1, FIG. 2a in particular showing the interaction of the Wändelament shows with a guided tour, when the wall element is closed;

• ■ j - I. V Pig. 3 «Χ
ι · \ I ι
I. and Figure 3a is a sectional front view of a wall \ i
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^:
1 elements along line 3-3 in Figs. 2 and 2a, which show a lock actuation direction, • as they ver in the foldable wall of Fig. 1 .Pi ₈ : i \ is applied: a plan view, partly in section, wherein the ■ Pig. 5 Section along the line ¹ I- ¹ J in Fig «2a is performed; ■ »·
I. in an enlarged scale of an individual illustration j in section showing the crank according to the invention 1 Pig. 6th order shows; S. a plan view in section along the line 6-6 in Fig. 7th Fig. 5 .; Fig. 8th a side view of the arrangement shown in FIG. 5; i a plan view in section showing three Wandele Ϊ ments on a common level to form a % Fig. 9 showing collapsible wall assembled; '_ a plan view in section of two adjacent *. ' ■ Wall elements according to Fig. 8, many the wall elements 660288 2

in a partially folded state, j

Pig.Io on a larger scale a detail in front view and in section showing the arrangement of one end of the horizontal operating rod shows and

11 shows a side view of FIG.

As will be explained in more detail below, the inventive foldable wall a number of wall elements which are movable along a rail and arranged so that they can be folded like an accordion. Each wall element has a frame which is enclosed by two sheets of material is. In each wall element a locking or locking device is provided through which a handle or shoe at one end of each wall element between a retracted and an advanced one Position to be moved came in which the latter

it is pressed against the floor or ceiling To secure wall element between the floor and the ceiling releasably. With the help of rotatable organs, the handle part moved from the retracted to the extended position

$$ 02882

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v; earth, whereby a holding support of the handle part with the floor or with the Dc ^ ke is obtained. The rotatable Organ of each wall element is arranged so that a single crank attached to the side of one of the V / andelemente exposed »can be used to simultaneously move each of the individual handle parts into its extended position move when the individual V / and elements are arranged in a common plane.

For this purpose there is a horizontal control rod arrangement with «coupling members at the adjacent ends between z?; ei wall elements in the V / eise that, after the adjacent coupling members have been brought into radial alignment, the. Control rods for each wall element rotated.

The foldable wall shown in FIG. 1 has, for example, six wall elements 2c in two groups of three each Wall elements on »Each of the wall elements of the group is hinged so that it is aklcordeon-like with respect to the other can be folded and stored so that it is on one side of a fixed support part 21 of the room to be subdivided rolled out of the VJeg

can. Λη each end of the support part 21 are side supports 22 and 23 *

The frame of each wall element 2o widens at the opposite ends of the latter profiles 2k and 26. The sides of the frame are generally formed by profiles 2 ?, 28, which have a substantially W-shaped cross-section. The profiles 2 * 1, 26 are arranged so that they form a recess at the upper and lower end of each wall element 2o, while the profiles 27, 28 are each arranged with their web part facing outwards, material plates 29, 31 form the front and rear sides of each wall element 2o. The middle wall element 2o of each group of three wall elements is articulated to the others at diagonally opposite edges so that the three wall elements 2o of the group can be folded out of the way in an accordion-like manner.

Each wall element is suspended so that it can be rolled along a rail 32, which is shown in FIG Embodiment is an extruded profile with wings 53, which can be attached along the lower edge of the support part 21- * The bracket 32 has two opposite Make 3 ^, which are facing each other

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Ends are spaced apart so that they form a guide between them. The upper sides of the strips J> k are designed in such a way that they have a track or a groove 36 receiving guide rollers 37.

Hangers provided with a slide allow each wall element 2o to pivot about an axis which is substantially in the same plane as the wall element 2o, and have a downwardly directed threaded shaft 38 attached to its upper end is supported in a sleeve 39, and carries at its lower end, the weight of the Wandelei ... nth 2o by its Gewinde'eingriff with a holder H ^1. The bracket ¹ H is attached to the upper profile 26. When a handle part ΊΊ is in its retracted position within the profile 26, the wall element 2o can rotate freely about the axis formed by the shaft 38. The wall element can also be rolled along the lines 36 guided by a plastic or other self-lubricating collar 42 which moves along the guide formed between the facing ends of the strips 3 * 1. The rollers 37 are arranged on axles which are mounted inside the carriage, which also has two plates 43.

At each end of the wall element 2o is telescopic

within the profiles 24 _s 26 a handle part 24 for movement between a retracted and an extended position, the handle parts 44 are essentially similar to one another and have a shoe 46 in the form of an inverted U with two parallel feet 47 spaced apart from one another, each of which carries an elongated grip strip 48 made of a material with a high coefficient of friction and preferably a ribbed outer surface. The back of each grip strip 48 is provided with an elastic bead which extends the length of the strip. The strips 48 can therefore be pressed into longitudinally extending openings provided along each of the feet 47 so that they are retained therein.

A power transmission arrangement 51 is used to each of the Handle parts 44 between the retracted and the extended position to move the V / andelement 2o in a vertical position between the floor and the ceiling of a room to be divided. the Power transmission arrangement 51 has a housing 52 essentially vertical sides 53, 54 and an upper end 56 through which an opening 57 is provided. The lower end of the housing 52 is provided with two tabs 58

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formed that are bent outwards and in a suitable manner On a fixed part of the frame of the wall element can be attached. A strut is transverse to the opening provided at the lower end of the housing 52

59 attached, the opening 6i onx? Eist = From the Ver

aspiration 59 is a bearing sleeve 62 coaxially to the opening 6l below? away,

The arrangement 51 also has an upper and a lower support bar 63 and 64, respectively, which extend through the openings 57, 61 extend and are guided by this. The upper end of the support rod 63 is provided with a rod extension

66 is provided, which is slidably movable through an opening 67 which is provided in the holder 4l, which serves as a guide plate attached to the frame of the wall element. The outer end of the rod extension 66 is on the handle *

f part 44 attached and movable with this. At the end of

Rod extension 66 is attached to a transversely extending bracket 69 for driving the handle member 44 between its retracted and its extended position. At the lower end of a rod 64, a similar L-shaped connection, which is formed by a rod extension 71 and a holder 72, serves to hold the lower handle part 44 between its retracted and extended.

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taken position with respect to the wall element 2o ,

Means are provided for moving the support rods 63, 64 outwards with respect to the housing 52, as follows are described in more detail.

A control rod assembly 73 is mounted so that it extends between the sides 74, 76 of each wall element 2o ν The control rod arrangement 73 comprises a threaded spindle 77 which is mounted between the sides 53, 54 of the housing 52 is. A spindle nut 78 is movable on the spindle 77 when it is rotated. The nut 78 is against rotation and held in a vertical position by a guide plate, which by a U-shaped, relatively wide band metal or a similar rigid material is formed and fixed between the housing sides 53, 5 ^ is. The nut 78 has an upper one and a lower one Ha & e Cl or 82 formed. Coil springs 83, 04 are arranged so that they are between the nose 81 and the lower end of the support rod 63 or between the rabbit 82 and the upper end of the support rod 64 extend. Spring wires 86, 87 are used to support the support rods 64 and to withdraw.

A rotation of the spindle 77 has the consequence that the nut 78 moves along this, wöäureh an outward vfirkende force on the support rods 63, 64 via the coil springs 83 * 84 is exerted. The springs 83, 84 allow the spindle 77 to rotate a little further after the support rods 63, & \ the handle parts 44 have brought into contact with the respective room surfaces.

The control rod arrangement 73 has means for transmitting a rotary movement to the spindle 77. Each end of the Spindle 77 carries a pivot pin 88 or 89, which is also arranged transversely through a substantially horizontally Control rod 91 and 92 are attached.

KuppiLiingsorgane are to d £ n ends of the control rod assemblies 73 for coupling the Re ^ elstangenanordnungen of adjacent wall elements are provided so that they can be rotated together when adjacent v / andelemente pivoted to each other in a common plane to form the klaDpbaren wall vi orden are _e The Kupp lungs Organs are also designed so that they immediately uncouple the adjacent rack assemblies 73 of adjacent wall elements when the V / and elements are brought into their folded position.

A transverse pin 93 is guided through a retracted end portion of the rod 92 in such a way that it extends through an elongated slot 94 in the end 96 of an extension rod 97. A sleeve 98 is attached to the extension rod 97. The sleeve 98 is formed with a transversely extending radial groove 99 which is intended for merging with a radially extending transverse tongue lol when the latter and the groove 99 are in radial alignment. The tongue lol ^J protrudes from the end of a sleeve Io2, which is attached to the outer end of an extension rod Io3, which is similar to the extension 97.

The rod extensions 97 and Io3 are loaded outwardly away from their respective control rods by springs. For example, a helical spring Io4 is supported against a ₍ fixed locking ring Ϊ06 carried by the extensions 97, ^. Lo3.

Hence this, every time neighboring wall elements 2o be pivoted into a common plane, the springs Io4. to elastically absorb the longitudinal movement caused by the contact in the event of a defective alignment between the tongue lol and the groove 99 is caused «By turning one or the other, a radial expansion

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! alignment can be brought about, in v / which case the spring

'lo'l brings the sleeves 98, Io2 together in such a way that the Rurige

lol is firmly engaged with the groove 99.

! !
^m : When each of the three walls learn te 2o one of the in Pig, I

groups shown has been arranged so that it is in a common plane, the coupling between the adjacent ends of the control rod arrangement of each wall element be engaged so that rotation of one causes radial alignment on each coupling and finally 'all the rods turn together.

The slight rotational movement which is used to bring about the radi-. . ^f is required alen alignment at each coupling, is ■ *. *. ^: , -cumulative, whereby, as can be seen, the helical springs 83, ■ ■ - ^ν '.ί ^: Ϊ84 each arrangement 51 serve the additional torsional. 'Record the movement required for the first arrangement of the handlebars

73 is required, which is initially notified of the rotation. The cumulative rotations required to couple all of the

^ ■ three arrangements 51 are required, can thereby

a minimum level must be set so that the following

slide single crank in an opposite direction is rotated after the first clutch has been brought about.

in Pig. 1 shown is ^ the one side peeler group of three wall elements 2o exposed and provided with an extendable crank, through which the spiritual anorciations can be rotated from a single side edge of the group.

Like inPig. 5, 6 and 7, a crank is provided, which is supported by one of the groups of wall elements on a wall element side, which, at least temporarily, not located adjacent to another wall element side. The crank is frictional to turn the

Control rod arrangement of all wall elements' jointly via the radially aligned couplings, coupled between them.

The exposed side 111 (Fig * 6) of the wall element 2o is formed by an elongated extrusion which forms one of the profiles 28. The extrusion has a vertically extending slot 113 which serves to receive an articulated crank 114 when it is full is stretched. The crank Il4 is at the end of the control rod 92 fastened, which is mounted in a socket part 116, which is formed at the upper end of the slot 113 is. The crank 114 has three links 117, 118 and 119, which are connected to one another by pivot pins 121, Das

Link 119 forms the handle of the crank H ¹ I. A lock with a spring-loaded ball is used to form a backup at each joint of the crank 114. For this purpose, two notches 122, 123 are provided on each articulated connection, which are at an angle of 90 ° are arranged toejrander. ^{A spring-loaded ball 12 2} I can slide in a coaxial bore of each link 117, 118, 119. When the ball 124 is in alignment with the notch 122, there is a ζ wanp; släufige Federsnerrung. The crank 114 can therefore be extended and located in a slot 117 in which it is substantially flush with invisible the exposed "page? ^Ί 1 of the wall element 2o. When the Regeistange 92 is to be rotated, the crank in the crank shape can be made of be pivoted.

The effect of the device described above; is vile follows.

Assume, as shown in FIG. 1, that a group von ciroi wall elements 2o are in a folded state located as indicated by the three nearest Wanc & eniente in Pig. 1 shown, and that these three war-delem- ents lead to formation are to be arranged on a wall, as shown by the three wall elements in the background, for what purpose the

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VJandelemente rotated four den until they were in one common level.

The unit consisting of three elements is then integrated into the correct lateral arrangement brought to the opening which is delimited by the carrier part 21 and the side supports 22 and 23 The crank 114 is withdrawn from its position within the groove 113, and into that shown in FIG •• / arranged for cranking the rod 92. When the pole 92 is rotated, the spindle nut 78 is rotated along this by the spindle 77 in the in Fig. 3 with dot-dash lines drawn position. This movement dBr nut 73 serves to move the support rods 63, 64 so that the handle parts are 4 * 1 from the wall element to the outside. By the outward movement of the handle parts 44 becomes the wall element between the underside of the strips 3 * 1 of the rail 32 at the top End of the wall element and the floor of the room at the bottom Wedged the end of the wall element.

During the alignment movement of the three wall elements more often Unity in a single vertical plane can make the tongues lol have been brought into alignment with the grooves 99. if If this is not the case, the springs Io4 take the longitudinal movement of the rods 91 * 92 elastically. During an initial

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Part of the rotation of the threaded spindle 77 (which spindle rotation is communicated by the crank 114) is however the rod 91 inevitably rotated so that the groove 99 u brought the tongue lol into radial alignment v; he the, that by a further rotation of the crank 114 not only support rods 63, 64 of the first wall element extended are, but also the support rods of the second War elements are operated, which with the first Wandelemer is articulated »

The support rods 63 * 64 of the third wall element of three wall elements existing unit are similar Wise extended, so that all three mutant ducks are in their position at the same time due to the outward movement de] Handle parts of each wall element are secured.

After determining each wall element 2o, the Id 114 stretched and inserted into the groove 113, from which it will be removed again for later use; can, if the wall is to be released and the unit consisting of three wall elements again from the W should be folded / grounded »

■ Bafeerefean sayings:

66028

Claims (1)

Η1β * · 1 ": DSm * ünieteqe (Besehrefeesg-wid Schuteamw ^" the iutetaf submitted "; sto waäcM Wn the word ' kaamj dar originally" ngmfchien Uniariogen aft. Ott sesotiiane Beoeurung äer Aowelchung M not checked. Oils rarunoech -üntertoger, oeiincefi s-cn ft oen A / rtsalaen. 3ie «onnen totem» without Nochwels • feat «oMÖchiB h * ere» s gebünrenfrä · Ιηα * 5βί »βη. Upon request, rotokoptin aOm FBm-Pitise gdWCt German Potenfamt. /=-*— place*.—*— th-* Sshut claims: 1, room dividing device y dad ^ irch geke η η ze i without t that a plurality of at least two wall elements is provided, each of which can be detachably fixed so that it extends between parallel space areas arranged with Abstaaä ₉ that each wall element has a Framework-forming means and plates of material carried by said frame for forming the front and rear sides, that each wall element spaced apart parallel ends and sides and further so arranged Has hinges that it sows neighboring convertibles for articulated movement between a wall partition and a wall folding position, that at one end of each wall element a handle part provided and with respect to the wall element between a retracted and an extended position is movable that a lifting device between the surfaces of each wall element for moving the handle part from its retracted position to its extended position is provided that the handle part each wall element in its extended position rests against surfaces within a room, around the Wall element in this to determine if the handle part is pressed against the wall surfaces that a control rod arrangement is provided in each wall element which extends along an axis between the sides of each WaMelements, and which frictionally is coupled so that it has an associated lifting device between a retracted and a o / a * ♦ ta extended position for moving the handle part that drives coupling members on adjacent ones. Ends of the rule rod arrangement of adjacent Wandeleiaente are arranged for coupling the rule rod arrangement. of the neighboring wall elements * when they are pivoted together into the aforementioned wall formation position, and then, to disengage the control rod arrangements of the neighboring wall elements, ^ - when they are moved into the wall - (■■: folding control that a crank from the L-edge of one of the Wandelsaente is worn, and strong is coherently coupled in such a way that the rule rod na ti-orders of the two neighboring converters again via the Dome organs are rotated when the wall panels ^{f are} in the wall formation position, whereby the Wandele elements of a formed in this way, from several wall , elements existing wall together within the room can be determined by moving the crank * 2, A device according to claim 1. characterized ge characterized net that the coupling members a first and a second Element on v / ei sen from adjacent ends of the control rod assembly are carried and arranged for rotation therewith, that the first and the second Coupling element for mutual engagement in a radial Outflow lines are formed with each other and that means at least one of the mentioned elements for the elastic Longitudinal movement with respect to the control system support elastically, on an articulated movement of the wall elements to enable danfi in a common level, when there is no radial alignment between the mentioned adjacent ends, a rotation the crank mentioned serves to radially connect each pair of adjacent ends of the control stand arrangements. .11 (1111 Il · · W 4 · ■. »Η. ' "■ 3 - to align with each other when sioh the wall panels in are at the level mentioned, 3. Apparatus according to claim 2 * marked thereby θ t, that means are provided which have a rail for fastening to the ceiling of the room to be divided au form that © ine roller arrangement for each wall element for movement along the mentioned rail it is provided that a hanger is calibrated between each roller assembly and the frame of a wall element © s, extends around the frame to wear for rolling movement along the rail, wherein each hanger (hanging device) essentially in the middle is arranged between the ends of the associated 8-reef part, which latter is movable with respect to the hanging device Ιβίϊ, and in its extended position for engagement with the die mentioned rail-forming means serves * 4 "Wall device, in particular naoh one of the preceding claims, sur detachable arrangement in a room in such a way that it divides this room" characterized in that at least two wall elements are provided, each of which has a frame sorie material plates that from the frame to form the front and the rear of the wall element θ are carried so that an "adjustment" actuating device with at least one rope comes to rest on the floor or the ceiling of a tree, this one ceil being movable between a retracted and an extended position is, in which the latter it is supported against the floor or the ceiling, that a rotatable member between the sides of the wand and a lifting device are provided ₅ with the latter being rotatable to rotate the part mentioned and having a 3-edder which is elastic one further rotation of the rotatable ο / β «I it · * ·» t »# β r r Member allows, after the mentioned one part is supported either against the floor or against the ceiling, * that a actuating shaft is mounted in such a way that it extends between the sides of the wall element in a plane between the mentioned surfaces of the same, and serves to To rotate the lifting device, so that hinges are provided, which support the wall elements adjacent to each other for splitting into a common plane and a " _B ai ^ er / Äur arrangement of the actuating shafts adjacent to each other, that gowns at the adjacent ends of the shafts mentioned then in mutual engagement come when the mentioned wall elements © are arranged in the mentioned common plane, the latter means releasing the mentioned mutual engagement when the wall elements are folded out of the mentioned common plane * and that a crank at the end one of the actuating shafts is provided for rotating both shafts when the wall elements mentioned in FIG mentioned common level are arranged « Device according to claim 4, gekennzeichn characterized et ₇ that the crank from a rest position in which they are to one side of one of the wall elements is substantially flush, can be led out into a working position in which they extended from the last-mentioned side away Device according to one of the preceding claims, gekennze i Ohnet% by a plurality of at least two side by side hingedly interconnected wall panels for the purpose of displacement _s forming between a folded position and a position of a wall,
one located at one end of each wall element Griffteilρ which is movable with respect to the dom wall element between a retracted and an extended position _s the handle portions in their extended position engaging surfaces within a space in order to fix the corresponding wall element ^ mil α n> A.yt wÄvivi Λ A λ ß- * r »*! · Ρ · Ρ * 4-αΊ * t α π »a /» aw / 14 asa "DI KaIaaVi <y j ^ a ^^ j LJb fl TT ^^ i Ui ^ A ^ j ^ ^ b ^^ i ^ JT Λλ β ^ & vfe rf ^ ^^ »'μ ^^ k ^ A ^^ 7 ϊ ^^ ^^ 7F ^ «^^ i KJb ^ Jfc ^^ b ^^ y H ^ 7 ^^ · ^^^ ^^^ ^^ b ^^ JF ^ c ^^ v κ w. ^ Jc ^^ T ^^^ ' <5 be moved, Devices for the simultaneous movement of the wall element handle parts from their withdrawn to their extended positions, these moving devices comprising a control rod arrangement carried coplanarly by each wall element _p Devices for the releasable coupling of the register rod arrangements of adjacent wall elements when the wall <->. elements in a substantially coplanar position to. Formation of the wall are brought and for uncoupling the control rod assemblies of adjacent wall elements Q & ann, when these are brought from the di © wall-forming position to the collapsed wall position, the shelf rod assemblies of the corresponding wall elements are operatively connected to the handle parts of the same _s around the handle parts between their mentioned positions to move when actuating the control rod assembly, Devices for actuating one of the control rod assemblies one of the Wa & delemente, if, the wall elements are arranged in their position forming the wall, around the handle parts of the corresponding wandeinente in to bring their extended position " 7 »Device according to claim 6, characterized in that suffered * ■ * · <· β w β ': / I t * each wall element at the other end «in the second opposite this between a zuriiakge ^ ogenen and an extended one Has position movable handle part, this handle part when arranged in its extended Positioners that can come into engagement with areas of space} which facing the first mentioned Raumi'läohen, ünu wöoöi a.te RegslöOöugönBciQxuuüugeti who öuliSpx ^ uuSuuwn Wall element with the two-tone handle part operational are connected to the second handle parts between their to move mentioned positions and that when actuated the control rod arrangements at the same time with the same Movement of the first handle parts «, 8, device according to claim 7, characterized of the means _f which form a rail that can be fastened to the ceiling / room to be partitioned, a roller arrangement connected to each of the viand elements, which can run along the rail, one between the corresponding roller assembly / and hanging device extending to the corresponding wall element, in order to support the corresponding wall element «* for a rolling movement along the rail the hanger being substantially midway between the sides of the respective wall elements is arranged, wherein the handle parts of said one ends of the wall elements are movable with respect to the hangers and in their extended position with the rail - educational means are engaged, the sail bar assemblies being operable simultaneously are about the handle parts of the mentioned one ends of the To create wall elements against the rail means "whereby the Wall elements can be set at the same time in their positions forming the wall without the wall elements must be raised in YertikalriehtuELg., β / β • t · «r e» • »· er'ae 9ο device according to one of the preceding claims, j characterized by: a wall element which is articulated side by side with a similar wall element or elements can be linked to provide articulation between a folded one and a wall-forming one To admit position, one arranged at one end of the wall element Handle part, which is opposite this between a retracted and extended position is movable wherein the handle member in its extended position engages surfaces within a space can, so as to fix the wall element therein when the handle part Gegea. this area is printed, Devices for moving the wall element handle part from its retracted to its extended position, the movement devices being a control rod have inung, which is carried by the wall element in a coplanar arrangement and located between its side edges extends, Devices for the releasable coupling of the control rod arrangement with similar control rod arrangements of adjacent wall elements, which are equipped with similar handle parts when the wall elements are brought into substantially coplanar relationship to form the position forming the wall and to decouple the control rod arrangement from the control rod arrangements of adjacent wall elements when the wall elements ^{are swung from the position forming the V, r <} änd into their folded wall position, wherein the control rod assemblies of the wall element is operationally connected to the handle part to this? _v to move between the aforementioned positions upon actuation of the control rod arrangement, and devices for actuating the control rod arrangement ι- ■ »* - 8th at one edge of the wall elements when the Wall elements are arranged in their position forming the wall in order to grip the corresponding wall elements to British together in their extended position » Arrangement according to claim 9, characterized in that that the wall element has a wide grip part at the other end, which with respect to this between the withdrawn and extended position is movable that the handle part of the other end of the Viandelementes in its extended position come into engagement with a space surface opposite to the first mentioned space surface Acann, with a rack assembly operational is connected to the second handle part in order to move it between the mentioned positions, at the same time with a similar movement of the first handle part Actuation of the control rod arrangement ",