A DEVICE FOR TAPPING OFF OR FILLING FLUID INTO A CONTAINER

Abstract: The invention relates to an emptying and filling device for a fluid in containers, e.g. oil barrels, including an emptying or filling hole (13) closable by a bung (17), this bung having an outwardly open substantially cylindrical cavity (19) and two mutually spaced projections (20), said device including a generally cylindrical housing which is releasably mountable at its open end over said hole (13). After fastening the housing (10) sealingly against a flange (15) at the hole (13) a movably arranged bung holder means (48, 80) in the housing (10) and provided with gripping means (65, 90), is adapted peripherally to engage and retain the bung (17) by releasable engagement with both projections (20) of the bung (17), thus enabling, apart from screwing in and out the bung (17) in the hole (13), a regulatable emptying or filling of the contents of the container without the container needing to be raised into a vertical position before assuming its horizontal emptying and/or filling position.

Description: A DEVICE FOR TAPPING OFF OR FILLING FLUID INTO A CONTAINER The present invention relates to a device for use in con¬ nection with emptying fluids from or filling fluids into a container via a hole in a wall thereof, this hole being internally threaded and closable with the aid of an ex¬ ternally threaded, generally cylindrical bung, which has an upwardly open generally cylindrical cavity and two projec¬ tions mutually diametrically opposing and spaced, which project into the cavity. More specifically, the invention relates to such a device of the type including a cylindrical housing having an open end which is intended for being removably mounted over the hole in the container. The housing is provided with an opening in its cylindrical wall for supplying or removing fluid, and includes a tool for manual anoeuvering of the bung from a position outside the housing, the tool being provided with a spindle extending displaceably and rota- tably through the end wall of the housing opposite its open end, and outside the housing the spindle is provided with a handle, while at its other end it is provided with a bung holder means which is provided with grippers insertable into the bung cavity for releasable retention of the bung by the bung holder means, these grippers being adapted such as to retain the bung at the bung holder means by the action of releasable engagement with said both projections on the bung. Devices of this kind are primarily utilised in connection with tapping off fluid from, or filling fluid into con¬ tainers formed as barrels, via a bung hole closable by a bung in the container. The devices make it possible to eliminate the risk of the person carrying out filling or emptying coming into direct contact with the fluid in question. In previously known devices of the kind mentioned above the grippers are formed by two diametrically opposed gripping jaws at the bung holder body, and have gripping portions facing away from each other by which the gripping jaws can be brought into engagement under pressure against two mutually opposed portions of the circumferential side wall of the bung defining the cavity in it. The gripping por¬ tions of the gripping jaws have always been formed here as comparatively sharp edges. Although this may appear advan¬ tageous per se, it has been found in practice to have several drawbacks. Namely, on the one hand, gripping por¬ tions made in this way cause an appreciable risk of troublesome damage to the side wall if they are adapted for coming into substantially butting engagement against it. On the other hand,- if they are adapted for being brought into resilient engagement against this wall, they may allow the bung, when it is screwed out of its hole in the container, to be subjected to fluid flowing through the device such as to be given a weakly sloping attitude on the bung holder means, so that rescrewing into the hole is made consider¬ ably more difficult, and in the worst case quite imposs¬ ible. The risk of such an oblique attitude of the bung is particularly great with such bungs which are made from pressed sheet metal, where the outside thread on the bung is impressed through it to give a wavy surface on inside of the circumferential side wall of the cavity in the bung. The invention has the object of providing an improved device of the kind mentioned in the introduction, which dispenses with the above-mentioned disadvantages of the previously known devices. The distinguishing features of the invention are disclosed in the following claims. As a result of the present invention there is now provided a tapping device of the kind mentioned in the introduction, which fulfills its objectives in an excellent way, while at the same time it can be manufactured to a relatively low price. The device can be mounted on such as an oil barrel without leakage occurring, even if the barrel is horizontal and its contents exert a constant pressure on the inside of the bung. In addition, the device can be rapidly and easily fitted and removed from the tapping opening, due to the configuration of its fastening means. When a container is being emptied, the bung is retained by gripping elements, which ensure that the bung does not become loose or cannot be given an oblique attitude by the action of flowing liquid. The invention will now be described in more detail with reference to the accompanying drawings, where Fig. 1 is a partially sectioned perspective view of a device in an embodiment of the invention selected as an example. Fig. 2 is a side view of the device in a position for mounting it on an annular flange projecting from a con¬ tainer, this flange defining an internally threaded filling and emptying hole of the container which is closable with the aid of an exteriorly threaded bung, which can be screwed into the hole, Fig. 3 is a corresponding side view of the device as fitted to the flange. Fig 4. is a partial sectioned view illustrating certain elements for releasably fastening the device to said flange. Fig 5. is a perspective exploded view of said flange and two alternative types of bung for fitting into the bung hole, Fig 6. is a perspective view of a bung holder means asso¬ ciated with the tool of the device, Fig 7. is an axial section of the bung holder means, figs. 8 and 9 are sectional plans of the bung holder means along the lines VIII-VIII and IX-IX, respectively in Fig. 7 and show the means in a first state, figs. 10 and 11 correspond to figs 8 and 9, and are sec¬ tions through the means showing it in a second state, Fig. 12 is a section corresponding to the one of Fig. 8 and showing the means in a third state, Fig. 13 is a perspective view seen from below of a modified bung holder body for a tool associated with a device in accordance with the invention, Fig. 14 is a plan, seen from above, of the lower part of the bung holder body illustrated in Fig. 13, illustrating two grippers movably mounted in it and in an inactive position. Fig. 15 is a plan corresponding to the one in Fig. 14 but showing the grippers in an active position, Fig. 16 is an axial section through the means according to Fig. 13 along the lines XVI-XVI in Fig. 14 and Fig. 17 is a plan, seen from below, of an upper part of the bung holder body illustrated in Fig. 13. The device illustrated on the drawings includes a generally cylindrical housing 10 (figs. 1-3) with an open and a closed end, provided at its open end with a fastening means generally denoted by the numeral 11, and with the aid of which the housing 10 can be fastened over a bung hole 13 (Fig. 5) arranged in a container 12, for filling into and discharging fluid from the container. The hole 13 is formed by an internally threaded pipe stub 14 projecting from the wall 12, and at its outer end it is provided with an ex¬ ternal circumferential edge flange 15, to which the housing 10 can be sealingly fastened using the intermediary of a sealing ring 16 (Fig. 4) . In the left hand part of Fig. 5 there is illustrated an exteriorly threaded, generally cylindrical bung 17 which is provided with a generally cylindrical outwardly open cavity 19, defined by a circumferential side wall 18. Projecting into the cavity there are two mutually opposing spaced projections 20 formed by folded end portions of a metal strip 21 welded to the bottom 22 of the bung 17, which is made from pressed sheet metal. In the upper right hand part of Fig. 5 there is illustrated a bung 17' of somewhat modified embodiment, being produced by casting a suitable metallic material. In this case as well the bung is provided with two mutually opposing and spaced projections 20. In this bung however, these projec¬ tions are cuneiform and produced integral with the bung. In Fig. 2 the bung 17 is shown screwed into the pipe stub 14, thus closing the hole 13 tight with the intermediary of a sealing ring 23. The fastening means 11 includes three jaws 24 disposed at uniform pitch round the periphery of the housing 10 at its open end. These jaws 24 have leg portions 25, which are guided in the housing 10. At their outward ends the jaws 24 are provided with inwardly folded gripping portions 28, which can be urged against rearward portions of the flange 15 of the pipe stub 14 for bringing the housing 10 into sealing engagement against the flange via the sealing ring 16. At their inward ends the jaws 24 are provided with outwardly folded end portions 29, with the aid of which they are each anchored in a radial through opening 30 in a ring 31 serving as an actuating member for the jaws, and arranged axially displaceable in a region of the housing 10 behind a fixed ring 26 at its forward end. The latter ring has three axial recesses 27 serving as guiding passages for the leg portions 25 of the jaws 24. The openings 30 and recesses 27 accomodate the jaws 24 with given clearance, to enable their gripping portions 28 to move radially outwards the necessary amount for releasing them from the flange 15 of the pipe stub 14 such as to allow removal of the device in its entirety when the jaws are moved, with the aid of the ring 31, axially outwards from the housing 10. To ensure that the gripping portion 28 will move radially inwards towards the pipe stub 14 behind the flange 15 when the jaws 24 are moved in the opposite axial direction in relation to the housing 10 with the aid of the ring 31, i. e. axially upwardly in Fig. 3, the leg portions 25 are formed adjacent the gripping portions 28 with obliquely outwardly folded portions 25 for coaction with beveled exterior portions 33 at the bottom surfaces of the recesses 27. For operating the ring 31, and in turn the jaws 24, there is a ring 35 rotatably mounted on an upper part of the housing 10, this ring resting against a stationary support flange 36 and having on its side facing away from this flange two helical cam surfaces 37, each extending along half of the circumference of the ring 35. Along the major part of each cam surface 37 there is an axial slot 38 in the ring 35 concentric with the central axis of the housing 10. Extending axialϊy and mutually opposed on either side of the housing 10 there are rods 39, each rod passing through one of the slots 38 and provided with threads at this end for a nut 40 and washer 42, while their other, forward ends are fixed to the ring 31, e.g. by providing the rod end portions with a thread for screwing into an internally threaded hole in the ring 31. Around each rod 39 there is a compression spring 41, one end of which bears against the inward side of the ring 31 and the other end bears against a lug 43 rigidly connected to the housing 10 and situated against the downward side of the flange 36. With the aid of the nuts 40 the washers 42 are caused to bear against their respective cam surface 37 on the ring 35. against the bias of the springs 41, which urge the ring away from the open forward or lower end of the housing 10. The ring 35 is provided with a radially projecting pin 44 which serves as a manual operating means. When the ring 35 is turned with the aid of this pin, the ring 31 will be moved axially upwards or downwards on the housing 10 de¬ pending on which way the ring 35 has been turned, thus causing the jaws 24 to move in the opposite direction. In one turning direction these are brought into engagement with the flange 15 on the pipe stub 14 for fastening the housing 10 to it, while turning in the other direction will cause them to release their engagement with the flange 15 and allow removal of the device in its entirety from the pipe stub 14. In Fig. 1 there is illustrated a tool generally denoted by the numeral 45, with the aid of which the bung 17 can be manoeuvered by hand from a position outside the housing when the housing 10 is mounted on the pipe stub 14. This tool has a tubular spindle 46 with a circular cross section and which is movably and rotatably mounted in a sealed through opening in the housing 10 at the closed end there¬ of. At its end situated outside the housing 10 the spindle 46 is provided with a handle, while at its other end it is provided with a holder means, generally denoted by the numeral 48, for the bung 17. As will be most easily seen from figs. 6 and 7, the bung holder means 48 includes a shaft, the upper portion 51 of which is inserted in the spindle and locked in it with a locking pin 50, the bottom of the spindle butting against a flange 78 on the shaft, which continues outwards with a portion 61 having a smaller diameter. The means also in¬ cludes a cylindrical body 52 which is fastened to a disc - shaped lid 54 by two screws 53, these two parts limitedly rotatable about.the spindle. The lid 54 is provided with a hole accomodating the spindle and a recess 77 accomodating the circular flange 78. The body 52 is preferably a plastics ejection moulded detail, which has an upper cylindrical portion 52' of a greater diameter, and a downward generally cylindrical portion 52'' of a less diameter. The downward portion 52 ' ' is however provided with two diametrically opposed circum¬ ferential recesses 55 extending the full height of this portion and having a radially inwardly tapering shape, as is most clear in Fig. 9. In its upper portion 52' the body 52 is provided with a generally rectangular recess 56, as seen in plan, which extends into this portion from the upper side of the body. In its lower portion 52" the body is provided with a flat, relatively shallow cavity 57, extending in the transverse direction of this portion between both recesses 55, and has a shape more closely illustrated in figs. 9 and 11. In the wall between the cavity 56 and cavity 57 there are two parallel through slots 58, which are situated on either side of a central through hole 59 in this wall. There is also a corresponding central through hole 60 in the wall of the portion 52'' situated outwards of the cavity 57. These two holes 59 and 60 serve as journaling holes for the downward portion 61 of the spindle. The cavity 57 acco odates two grippers 62, one on top of the other, which with the aid of central through holes 63 therein are pivotably mounted on the shaft portion 61, each having two gripping jaws 64 formed at their outer ends with claw-like gripping portions 65. The grippers 62 can be pivoted about the shaft portion 61 between inoperative and operative positions. The inoperative position is illu¬ strated in Fig. 9, where both gripping portions 65 of each pair of coacting gripping jaws 64 associated with different grippers are retracted from the recesses 55 and with their portions 65 situated at a maximum distance from each other. The operative position is illustrated in Fig. 11, where the portions 65 are urged together in the recesses 55, in which positions the gripping portions of the gripping jaws can releasably engage with projections 20 of a bung 17, these projections being accomodated in said recesses, for re¬ leasably retaining the bung with the bung holder means 48. In the recess 56 and in its longitudinal direction there are two juxtaposed, generally rectangular, movable blocks 66 serving as carriers for the grippers 62. Each block 66 is provided with a downwardly directed pin 67 (as seen in Fig. 7) for coaction with a gripper 62, the pin passing through an opening 58 in an elongate hole 68 in a gripper 62. The spindle 51 is provided inside the recess 56 with a radially projecting blade 69 for providing a sliding move¬ ment to the blocks 66, and thus in turn actuating the grippers 62. Accordingly, when the tool spindle is turned in relation to the bung hole means 48, the grippers 62 are also actuated. As will be seen from figs. 8, 10 and 12 the blade 69 is adapted for actuating the blocks 66 via two rubbing plates extending substantially transverse the blocks 66, the shorter plate 70 situated uppermost in Fig. 10 is retained at its short ends by a slot 71 in the res¬ pective block, while the somewhat longer plate 72, down¬ wards of the plate 70 in Fig. 10, projects into larger recesses 73 in the blocks. Accomodated in the blocks there are two compression springs 74 oriented in the longitudinal direction of the blocks, such as to have one end bearing aganist the downward side of the plate 72 and the other end bearing against an end wall 75 in the respective block 66. The arrangement described above operates in the following manner. When the device has been placed over the hole 13 formed in the pipe stub 14 and is fastened to the flench 15 with the aid of the fastening means 11, the bung holder means 48 is urged against the bung 17 with the aid of the handle 47. The lower portion 52" of the chief portion 52 of the bung holder body can now be inserted into the cavity 19, provided that the bung holder means has been previously brought into a position in which the recesses 55 are si¬ tuated directly opposite the respective projections 20 of the bung 17, and that both grippers 62 are in their in¬ active positions illustrated in Fig. 9. The tool spindle 46 is then rotated with the help of the handle 47 in an anti¬ clockwise direction. The blade 69 will then be moved from its position illustrated in Fig. 8 in relation to the bung holder body to the position illustrated in Fig. 12, where the springs 74 ensure good retention of the projections 20 on the bung 17 between the gripping portions 65 of the jaws 64. For continued anti-clockwise movement of the spindle 46 rotation is translated from it to the bung 17 via the wall surfaces of the recesses 55 facing towards this turning direction. The bung 17 is thus screwed out of the pipe stub 14. The bung 17, still retained positively by the bung holder means 48 can then be withdrawn axially with the aid of the handle 47, away from the pipe stub and into a posi¬ tion which allows free fluid passage through the housing 10 between the hole 13 and an opening in the circumferential wall of the housing 10 formed by a projecting pipe stub 76. If so desired, the bung 17 can be once again screwed into the pipe stub 14 with the aid of the tool 45 for closing the hole 13. When the bung has been tightened down, the gripping jaws 64 will be moved back again into their in¬ active positions as illustrated in Fig. 9 for continued rotation of the handle 47 in a clockwise direction, thus releasing the projections 20 of the bung 17, so that the bung holder means 48 can be removed from it, and the entire device be removed. A particular advantage of the bung holder means described above is that the springs included in it not only ensure positive retention of the projections 20 of the bung, but also make it possible to utilise the means for retaining bungs having projections with highly varying widths. The housing 10 and the rings 26, 31 and 35 together with the body of the bung holder means 48 may be suitably pro¬ duced by ejection moulding a suitable plastics. However, the jaws 24 and grippers 62 should be made from metal e.g. steel. The embodiment of a bung holder means 80 illustrated in Fig. 13 is solely intended for use with bungs 17 of the type illustrated upwardly to the left in Fig. 5. Charac¬ teristic for this bung 17 is that each of the diametrically opposing projections 20 accomodated in the cavity 19 of the bung have a through opening extending practically periphe¬ rally or tangentially. Bungs of the kind just mentioned dominate the market comp¬ letely at present for containers made as barrels, and if such a container should be provided with a bung of some other type this bung can easily be exchanged for one of this type so that a device with a bung holder means which can only be used with such a bung may be used. As will be most easily seen from figs. 14 and 15, the gripping means of the bung holder means 80 are formed by two grippers 90 extending in a peripheral direction diamet¬ rically opposite each other. Each is insertable in a through opening extending substantially peripherally or tangentially in each of- said projections of the bung 17 and is adapted for retaining the bung 17 to the holder means 80 by coaction with inner wall surfaces of said opening. In the simplest case, these grippers 90 may be made as elonga¬ te elements rigidly connected at their ends to the body of the bung holder means 80, and can be made integral there¬ with, or may be separate elements rigidly attached thereto. In turn the body can be rigidly connected to the tool spindle 46. Preferably, the grippers 90 should be limitedly movably mounted in the body. Suitably, the latter can be provided with two diametrically opposed peripheral re¬ cesses, for accomodating the respective projection on the bung. The grippers can then be movable between an inactive position retracted from said recesses and an operative position where they thrust into the respective recesses. The grippers 90 can to advantage be joined to each other by an intermediate connection member, which advantageously is integral with them. The grippers 90 are then preferably formed by arcuate end portions of a metal wire element 89, which also includes an intermediate portion forming said connection element. In addition, the body of the plug holder means can be limited¬ ly rotatably mounted on the tool spindle 46, while the connecting element can be non-rotatably connected to the tool spindle for moving the grippers 90 between their inactive and active positions by turning the tool spindle in relation to the body. As will be seen from Fig. 16, the bung holder means 80 has two main parts, an upper part 81 and a lower part 82, which is limitedly rotatably mounted on the tool spindle 46. The lower part 82 is made as a generally cylindrical body, having on its underside a transverse recess 83, which formes a free space accomodating the transverse middle portion of the plate member 21 on the bung. At either end of this recess there are recesses 84 in the circumference of the part 82 for receiving the loop-like projections 20 formed by folding the end portions of the plate 21. The upper side of the part 82 is provided with a recess 85, which includes a central, cylindrical portion 86, 2 sector portions 87 on either side thereof, and two narrow arcuate grooves forming the portions 88, which extend from an outer corner of the respective portion 87 to its respective recess 84. In the recess 85 there is a metal wire element 89 arranged to rest in a horizontal position on the bottom thereof. This element 89 has two opposing arcuate end portions 90 and an intermediate, straight connection member 91 extend¬ ing diametrically on the part 82. The element 89 is rota- table in the part 82, between the positions illustrated in figs. 14 and 15, with the aid of the tool spindle 46, which is rotatably mounted at its lower end in the central cy¬ lindrical portion 86 of the recess 85 and is provided with a transverse slot 92 for accomodating the middle section of the connecting member 91. The upper part 81 of the bung holder means 80 is formed as a circular lid mounted on the lower part 82 and is fastened to the latter with the aid of two screws 93, extending through free holes 94 in the part 81 and threaded 95 into the part 82. There is a central opening 96 in the part 81, in which the tool spindle is rotatably mounted. The part 81 has at its lower side a shallow circular recess 97 for accomodating the upper end portion of the part 82. It is in addition provided with two diametrically opposed projections 98 extending downwards from the bottom surface of the recess 97 and into the portions 87 and 88 of the recess 85, for keeping the metal wire element 89 resting against the bottom of the recess 85. The tool spindle 46 is provided with a.transverse locking pin 89 engaging against the bottom surface of the recess 97 for preventing the spindle from being withdrawn from the bung hold holder means 80. The bung holder means 80 functions in the following way. When the metal wire element 89 is in the position illust¬ rated in Fig. 14, the lower part 82 can be inserted in the cavity 18 of the bung 17 with the projections 20 accomoda¬ ted by the recesses 84. When the element 89 is turned by the tool spindle 46 from the position illustrated in Fig. 14 to the one illustrated in Fig. 15, both the portions 90 acting as grippers are inserted in the generally peripheral or tangential opening in each of the projections 20 between the substantially vertical legs thereof, indicated by chain-dotted lines in Fig. 15. The bung holder means 80 can thus retain the bung 20 and allow it to be screwed out of the pipe stub 14 to be withdrawn axially from the latter.

Claims: CLAIMS 1. Filling and emptying device for a fluid in containers e.g. oil barrels, including an emptying or filling hole (13) closable by a bung (17) , which has an outwardly open substantially cylindrical cavity (19) and two mutually spaced projections (20) said device including a generally cylindrical housing (10) , which is adapted for removably mounting at an open end thereof over said hole (13) with the aid of a fastening means (11) including at least two jaws (24) projecting from the open end of the housing, and engaging with a flange (15) on the pipe stub (14) of the hole (13), for bringing the housing (10) into sealed en¬ gagement against the flange (15) , said housing (10) having in its cylindrical wall an opening (76) through which fluid can be supplied to or discharged from the housing (10) , there also being a tool (45) for manual operation of the bung (17) for filling and/or emptying the container from a position situated outside the housing, said tool (45) including a spindle (46) extending displaceably and rota¬ tably in the housing (10) through an end thereof situated opposite the open end of the housing and provided outside the housing with a handle (47) , while at its other end it is provided with a bung holder means (48) , (80) for releas¬ able retention of the bung (17), c h a r a c t e r i z e d i n t h a t after fastening the housing (10) sealingly against the flange (15) with the aid of the fastening means (11) via a manoeuvering means (35), the bung holder means (48, 80) including gripping means (65, 90) is arranged such as to periferally grip and retain the bung (17) by releasably engaging both projec¬ tions (20) of the bung (17) , thus enabling, apart from screwing the bung (17) in and out of the hole (13) , regula- table emptying and/or filling of the container contents without the container needing to be put into an upright position, before its horizontal orientation for emptying and/or filling. 2. Device as claimed in claim 1, c h a r a c t e ¬ r i z e d i n t h a t the gripping means comprises two pairs of limitedly movable gripping means (65) arranged on the body (52, 54) of the bung holder means (48), said gripping means in each pair being adapted for being brought into engagement with the mutually opposing portions of one of said both projections (20) in a circumferential direc¬ tion. 3. Device as claimed in claim 2, c h a r a c t e ¬ r i z e d i n t h a t the gripping means comprises gripping portions (65) of grippers (64) pivotably mounted on the body (52, 54) of the bung holder means (58), and which are pivotable about a mutual axis (61) , which in turn extends concentric with the longitudinal axis of the tool spindle (46) . 4. Device as claimed in claim 3, c h a r a c t e ¬ r i z e d i n t h a t the bung holder means (48) is provided with two grippers (62) each of which has two gripping jaws (64) mutually, rigidly connected, for engage¬ ment with their respective projection (20) of the bung (17) both grippers (62) being rotatable about a common axis (61) of rotation, which is preferably coincidental with the longitudinal axis of the tool spindle (46) . 5. Device as claimed in 2 or 4, c h a r a c t e ¬ r i z e d i n t h a t the body (52, 54) of the bung holder means is limitedly, rotatably mounted on the tool spindle (46) , which has rigidly fixed to it actuation means (69) for the grippers (64) , by which the gripping portions (65) of said grippers are movable between positions for releasable engagement with the projections (20) of the bung (17) and an inactive position in which they are out of engagement with said projections (20) , and in that the actuation means (69) is adapted for operating the grippers (64) using the intermediary of carrier means (66) for the gripping jaws (64) , the gripping means (66) being limitedly movably mounted on the body (52, 54) of the bung holder means (48) for moving the grippers (64) towards their positions of engagement using the intermediary of springs (74) arranged between said actuating means (69) and carrier means (66) , the latter being mounted rectilinearly dis- placeably in the body (52, 54) of the bung holder means (48). 6. Device as claimed in claim 1 c h a r a c t e ¬ r i z e d i n t h a t the gripping means is formed by two diametrically mutually opposing grippers (90) extending in a peripheral direction, which are insertible in sub¬ stantially peripherally or tangentially extending through openings in the projections (20) of the bung (17) , and are adapted for retaining the bung (17) at the bung holder means (80) by coaction with inner wall surfaces said ope¬ nings. 7. Device as claimed in claim 6, c h a r a c t e ¬ r i z e d i n t h a t the grippers (90) , which are connected to each other by an intermediate connection member (91) and are formed from arcuate end portions of a metal wire element (89) , which also includes an intermedia¬ te portion forming said connection member, are limitedly movably mounted at the body (81, 82) of the bung holder means (80) , which is provided with two mutually diametri¬ cally opposing peripheral recesses (84) for accomodating the respective projection (20) of the bung (17) , said grippers (90) being movable between inactive positions retracted from recesses (84) and active positions thrust into said recesses (84) . 8. Device as claimed in claim 6 or 7, c h a r a c t e ¬ r i z e d i n t h a t the body (81, 82) of the bung holder means (80) is limitedly rotatably mounted on the tool spindle (46) and in that the connection element (91) is non-rotatably connected to the tool spindle (46) for moving the grippers (90) between their inactive positions and their active positions by turning the tool spindle in relation to the body of the bung holder. 9. Device as claimed in claim 1, c h a r a c t e ¬ r i z e d i n t h a t the fastening means (11) includes three jaws (24) at uniform pitch along the circumference of the housing (10) , the jaws having leg-like main portions (25) which are kept in place with the aid of outwardly folded end portions (29) accommodated in a ring (31) ser¬ ving as actuation means-for the jaws (24), said ring being arranged axially displaceable inwards of a fixed ring (26) arranged at the forward end of the housing (10) and jaws (24) on the housing (10) encompassing said jaws, said ring (31) being operable, and accordingly the jaws (24) , with the aid of an actuation means (35) rotatably mounted on a support flange (36) . 10. Device as claimed in claim 9, c h a r a c t e ¬ r i z e d i n t h a t the actuating member comprises a ring (35) coacting with the support flange (36) , said ring (35) having on its side facing away from the support flange a pair of helically rising cam surfaces (37) , each exten¬ ding along half the circumference of the ring (35) , these surfaces having elongate slots (38) for coaction with end portions of rods (39) extending axially and exterior to the housing (10) , the ends of these rods being adapted for being glidably guided in the slots (38) when the ring (35) is turned, the first ring (31) then being urged axially upwards on the cylindrical surface of the housing (10) with the aid of the rods (39) , there thus being achieved reli- able fastening of the housing above the emptying or filling hole (13) .

Inventors: ASTROEM ERIK JOHAN HALVARD, AASTROEM, ERIK, JOHAN, HALVARD
Applicants: ASTROEM ERIK JOHAN H, AASTROEM, ERIK, JOHAN, HALVARD
Application year: 1992
Main classification: B67B7
IPC codes: B67B7, B67D5