CA1266963A - Device for inserting and centering associated screw- in pipes - Google Patents
Device for inserting and centering associated screw- in pipesInfo
- Publication number
- CA1266963A CA1266963A CA000456643A CA456643A CA1266963A CA 1266963 A CA1266963 A CA 1266963A CA 000456643 A CA000456643 A CA 000456643A CA 456643 A CA456643 A CA 456643A CA 1266963 A CA1266963 A CA 1266963A
- Authority
- CA
- Canada
- Prior art keywords
- bail
- jaws
- closure means
- device per
- jaw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 229910000639 Spring steel Inorganic materials 0.000 claims 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Earth Drilling (AREA)
Abstract
ABSTRACT
The invention relates to an inserting and centering device for associated screw-in pipes. Two semi-cylindrical jaws are connected in articulating manner on the cylindrical inside surfaces of which are provided an annular projection having an annular, down-ward shoulder to rest on the socket edge of the pipes.
The jaws further comprise, at their upper end, a conical flare joining the said projection. Each jaw is equipped with one handle. The device further includes a closure mechanism to keep together the jaws when they are in the closed position wherein the jaws enclose with play the pipe socket. One handle of at least one jaw at the same time is designed to be a part of the closure mechanism.
The invention relates to an inserting and centering device for associated screw-in pipes. Two semi-cylindrical jaws are connected in articulating manner on the cylindrical inside surfaces of which are provided an annular projection having an annular, down-ward shoulder to rest on the socket edge of the pipes.
The jaws further comprise, at their upper end, a conical flare joining the said projection. Each jaw is equipped with one handle. The device further includes a closure mechanism to keep together the jaws when they are in the closed position wherein the jaws enclose with play the pipe socket. One handle of at least one jaw at the same time is designed to be a part of the closure mechanism.
Description
~ i3 BACKGROUND OF THE INVENTION
The invention concerns a device for inserting and centering associated screw-in pipes, as defined in the pre-amble of Claim 1.
Such known devices are provided with handles near the open end of the jaws. When the jaws are closed, the handles subtend an acute angle and point to the operator.
The closure means is separately made in the form of a drop latch. This design suEers from the drawback that when open-ing the closure means, the engagement must be loosened around one of the handles, which, in view of the devices most of the time being rather heavy, can become problematical.
Another drawback is that, after the jaws are opened, the device can only be removed toward the rear as seen by the operator, whcreby one hand mu~t be left Eree and only the 1~ other hand 1~ available to hold the heavy dev:Lce. Where ~pace perm-Lt~, th~ opcrator also may stand on the side opposite the closure mean~, in which case, however, the hand:Les can only be se:L~ed wLth dlfEiculty becau~e they are ~, ~ .9~
on the opposite side and pointing away from the operator.
Furthermore, operating the closure means is also rendered more difficult.
OBJECTS AND SUMMARY OF THE INVENTION
It is the object of the present invention to so improve the device defined in the preamble of the Claim 1 that handling is made easier thereby.
This problem is solved by the characteristics of the design as stated in the Claim 1, The especial advantage of the solution oE the invention is that one of the handles is simultaneously designed to be a part of the closure means, As a result, the required change of hands in the known device is eliminated and accordingly the device can always be fully held with both hands, Moreover, the design of the inven-tion permits operation of the device from the hinge sidein such a manner that the device can always be applied from the front and can always be removed toward the front.
~lereby, handling is ~substantially facil.itated, This de-vice is e~pecLally suLted for pipes of lesser diameters`
whercby 9ing:1.e~man operatLon is wholly feasLble, Pipes of larger diameters requlre correspondingly larger devices demandlng more than one-man operatlon, A clevice Eor handling such pLpes oE larger c'ia-meters Ls stated in Claim 8. This device is designed in such a manner that two operntors can handLe it, also being assured to pLpes of very lar~e diam~ers. The especial advantage oEEered thereby i9 that one oE the handles is designed to be part of the closure means, Consequently, the operation oE the quite heavy device is made appreciably easier, Ad~antageous and appropriate furt,her development.s of the embodiments of the Claims 1 and 8 are stated in the ~urther claims, If, furthermore, the handle of the other jaw, which is close to the closure means, is also designed to be an opening means Eor the closure, as stated in Claims ~ 9~3 12 through 14, then an additional advantage is that the device of the invention can be opened from each side.
This advantage is especially significant when the heavy device of the invention hangs from a cable, as it often does in practice, so tha~ the device can be opened from the side nearest the operator who no longer has to change sides.
The invention is discussed below in further detail in relation to the enclosed drawings showing illustrative embodiments.
DESCRIPTION OF THE DRAWINGS
FIGURE 1 is a perspective of a first embodiment of the device of the invention when in the open state, together with two pipe ends to be joined;
FIGURE 2 is a topview of the device of the in-vention o~ Figure 1 when in the closed state;
FLGURE 3 is a sideview of the device oE F:igure1 looking onto the closure means; FIGURE 4 is a sideview oE a second embodiment of the device of the inventiGn, looking onto the closure means;
FIG~RF, S is a topview oE the device oE Flgure 4;
FIGUR~ 6 is a third embodiment oE the device of the invent:Lon, seen ln topvlew; and, FIGIIRE 7 :Ls a ~ourth ~rnbod~ment of the device of the invention, seen in topvLew.
The drawlng of Figures 1 through 3 sho~7s an :Lnsertion and centering device Eor as~ociated screw-in pipes 30, 32, in particular for sinking pipes. The device comprises two semi-cylindrical jaws 4, 20 jointly articulating by means of a hinge or joint 36. Annular projections 42 and 44, each with a dow~lward annular shoulder 46 and 48, respectively, are provided on the cylindrical inner surfaces 38, 40 of these jaws. The device rests by means of this shoulder on the edge o~ the socket 34 of ~ 3 the pipe 32 while being assembled The jaws are provided at their upper ends with conically flaring parts 50 and 52, respectively, which join the projections. Handles 2 and 24, respectively, are mounted on the outside of the jaws and approximately centrally.
The handle 2 of the jaw 4 is designed as part of the closure means 6. For that purpose, the handle 2 pivots about an axis 54 and about the jaw. A rotatably supported connecting rod 8 connects the handle 2 with the one free end 14 o~ a double lever 12 which pivots about an axis 56 and which is also mounted on the jaw 4. The other free end 16 of the double lever includes a hook 18 which, :Eor the closed jaw position, overlaps a tooth 22 mo~mted on the other jaw 20, as best shown in Figure 2.
Preferably, the locking system 10 is designed to be of the self-latching snap-in type.
When the two jaws are closed, the handles 2,
The invention concerns a device for inserting and centering associated screw-in pipes, as defined in the pre-amble of Claim 1.
Such known devices are provided with handles near the open end of the jaws. When the jaws are closed, the handles subtend an acute angle and point to the operator.
The closure means is separately made in the form of a drop latch. This design suEers from the drawback that when open-ing the closure means, the engagement must be loosened around one of the handles, which, in view of the devices most of the time being rather heavy, can become problematical.
Another drawback is that, after the jaws are opened, the device can only be removed toward the rear as seen by the operator, whcreby one hand mu~t be left Eree and only the 1~ other hand 1~ available to hold the heavy dev:Lce. Where ~pace perm-Lt~, th~ opcrator also may stand on the side opposite the closure mean~, in which case, however, the hand:Les can only be se:L~ed wLth dlfEiculty becau~e they are ~, ~ .9~
on the opposite side and pointing away from the operator.
Furthermore, operating the closure means is also rendered more difficult.
OBJECTS AND SUMMARY OF THE INVENTION
It is the object of the present invention to so improve the device defined in the preamble of the Claim 1 that handling is made easier thereby.
This problem is solved by the characteristics of the design as stated in the Claim 1, The especial advantage of the solution oE the invention is that one of the handles is simultaneously designed to be a part of the closure means, As a result, the required change of hands in the known device is eliminated and accordingly the device can always be fully held with both hands, Moreover, the design of the inven-tion permits operation of the device from the hinge sidein such a manner that the device can always be applied from the front and can always be removed toward the front.
~lereby, handling is ~substantially facil.itated, This de-vice is e~pecLally suLted for pipes of lesser diameters`
whercby 9ing:1.e~man operatLon is wholly feasLble, Pipes of larger diameters requlre correspondingly larger devices demandlng more than one-man operatlon, A clevice Eor handling such pLpes oE larger c'ia-meters Ls stated in Claim 8. This device is designed in such a manner that two operntors can handLe it, also being assured to pLpes of very lar~e diam~ers. The especial advantage oEEered thereby i9 that one oE the handles is designed to be part of the closure means, Consequently, the operation oE the quite heavy device is made appreciably easier, Ad~antageous and appropriate furt,her development.s of the embodiments of the Claims 1 and 8 are stated in the ~urther claims, If, furthermore, the handle of the other jaw, which is close to the closure means, is also designed to be an opening means Eor the closure, as stated in Claims ~ 9~3 12 through 14, then an additional advantage is that the device of the invention can be opened from each side.
This advantage is especially significant when the heavy device of the invention hangs from a cable, as it often does in practice, so tha~ the device can be opened from the side nearest the operator who no longer has to change sides.
The invention is discussed below in further detail in relation to the enclosed drawings showing illustrative embodiments.
DESCRIPTION OF THE DRAWINGS
FIGURE 1 is a perspective of a first embodiment of the device of the invention when in the open state, together with two pipe ends to be joined;
FIGURE 2 is a topview of the device of the in-vention o~ Figure 1 when in the closed state;
FLGURE 3 is a sideview of the device oE F:igure1 looking onto the closure means; FIGURE 4 is a sideview oE a second embodiment of the device of the inventiGn, looking onto the closure means;
FIG~RF, S is a topview oE the device oE Flgure 4;
FIGUR~ 6 is a third embodiment oE the device of the invent:Lon, seen ln topvlew; and, FIGIIRE 7 :Ls a ~ourth ~rnbod~ment of the device of the invention, seen in topvLew.
The drawlng of Figures 1 through 3 sho~7s an :Lnsertion and centering device Eor as~ociated screw-in pipes 30, 32, in particular for sinking pipes. The device comprises two semi-cylindrical jaws 4, 20 jointly articulating by means of a hinge or joint 36. Annular projections 42 and 44, each with a dow~lward annular shoulder 46 and 48, respectively, are provided on the cylindrical inner surfaces 38, 40 of these jaws. The device rests by means of this shoulder on the edge o~ the socket 34 of ~ 3 the pipe 32 while being assembled The jaws are provided at their upper ends with conically flaring parts 50 and 52, respectively, which join the projections. Handles 2 and 24, respectively, are mounted on the outside of the jaws and approximately centrally.
The handle 2 of the jaw 4 is designed as part of the closure means 6. For that purpose, the handle 2 pivots about an axis 54 and about the jaw. A rotatably supported connecting rod 8 connects the handle 2 with the one free end 14 o~ a double lever 12 which pivots about an axis 56 and which is also mounted on the jaw 4. The other free end 16 of the double lever includes a hook 18 which, :Eor the closed jaw position, overlaps a tooth 22 mo~mted on the other jaw 20, as best shown in Figure 2.
Preferably, the locking system 10 is designed to be of the self-latching snap-in type.
When the two jaws are closed, the handles 2,
2~, are diarnetrically opposite each other.
In an alternative embodiment to the design sho~n in the drawings, the handle 2 also can be made to be ro~
tati.onal about its horiæontal axl~ 26. In that case, it ls not the pivot-lng but the rotatlonal motlon which is transmitt~d to the locking system 10, :Lmplemente~ Eor in~tance also by a bowden cable (omitted) in lieu o~ the 2S collnection rod 8.
The drawings show the components of the closure mea~s 6 of the locking system 10 in the ~orm oE elements mounted on the ~aws. The cLosure-means components (excep-tion, of course, being made oE ~he handle 2), however, can be designecl to be sunk in part or in whole into the jaws (omitted).
The inserting and centering device for associated screw in pipes shown in the drawings takes into account optimal biotechnical factors. Obviously, the handles 2 and 24 can be mounted centrally, that is, diametrically when ~ ~ 6~ ~3 the closed position is achieved. Furthermore, they may also be closer to the hinge 36. The design shown and described, in any event, assures that the device can be applied from ~he front and can also be removed toward the front, whereby its operation is substantially made easier.
The drawings of Figures 4 through 7 show an insertion and centering device 1' for (omitted) associated screw-in pipes, in particular ~or the sinking of pipes.
This device includes two semi-cylindrical jaws 2' and 4' connected together in articulating manner by a hinge or a joint 6'. The cylindrical inside surfaces 8', 10' of these jaws are provided with annular projections 12', 14', each with a downward annular shoulder 16' and 18', respectively. By means o this shoulder, the device rests on the edge oE the socket oE the pipe when in the assembled state. The jaws are provided at their upper ends with a conical flaring 20' and 22', respectively, joinlng the said projections. Two handles 24', 26' and 28', 30', re~pectively, are mounted next ~o each other in the cir-cumerential direction on the outside o~ the jaws 2' and 4', and assume the shape oE balls. The bail 30' o~ the jaw 4' Ls designed to be part oE a closure means 32'. To that end, the baLl 30' ls mo~mted to be pivotable at :Lts one end 34' about an axl.s 36'. A hook 40' is forrned at 2S the other end 38' oE the bail 30' and overlaps a tooth 42' mounted on the other Jaw 2' when these jaws are closed, as best shown Ln FLgures 5 through 7. PreEerably, the clasure means 32' is designed to be selE-latchLng. The end 38' of the bail 30' is made to pass through a U-shaped or rec~angu:Lar eye 44' which acts as a guide means and as a stop for the plvoting motion. A compression spring 46' is mounted within the eye to load the pivoting bail 30' towards the closed position.
In the embodiment shown in Figure 5, the bail 26' of the other jaw 2' i8 adjacent the closure means 32' and also is pivotable, providing a closure-means opener. To ~ 3 that end, the bail 26', just as bail 30l, is mounted in pivotable manner by its one end 48' about a fulcrum 50' on the jaw 2'. The other free end 52 ' of the bail 26' passes underneath the outer end, i.e. the hook 40' of the bail 30' in such a manner that bail 30' is moved by the outward pivoting motion of the bail 26' from the closed position into the open position. The end 52 ' of the bail 26' also is made to pass through a U-shaped or rectangular eye which acts as a guide. A compression spring may be mounted also in this eye 54' to load the bail 26' toward the closed position of the closure means 32'. ~lowever, such a spring is not mandatory.
Furthermore, the loading of the bail 30' and/or 26' can be implemented by using torsion springs mounted in the vicinity of the fulcra 36' or 50'.
F'igure 6 shows a simplified design of the in-serting and centering device. In this embodiment, the bail 26' of Figure 5 is again designed to be a fixed bail 56', as are the bails 24' and 28'. Otherwise, the device of Figure 6 is identical with that of Figure 5. The salhe components Eor the two devices therefore are denoted by the same references cmd the descr:Lption relating to Figure 5 should be considered for :Eurther accounts.
Flgure 7 shows a third embodiment oE the lnsert-~.ng and centering dev:Lcc. The bail 30' of the devices oEFi~ures S and 6 i8 designed to be a spring-~teel bail 58'.
This spring-s~eel bail 58' ig rlgldly mo~mted at i~s end 60' to the jaw ~' and is loaded by its own stres.s in the directlon o~ closing of the closure means 32'. In the device of Fj.gure 7, the bail near the closure means 32' also is deslgned to be a Eixed bail 56'. This bail 56', however, may be de~signed also to be an elastic bail 62' and may, like the bail 26' of Figure S, serve as a closure-means opener. Otherwise, the embodiment of Figure 7 corresponds to ~he devices of Figures 5 and 6. Accord~
ingly, the components identical with those of the devices .
':
of Figures 5 and 6 are denoted by the same references and to prevent unnecessary repetitions the descriptions relating to Figures 5 and 6 should be considered.
The inserting and centering device of Figures ~ through 7 is intended especially for pipes of sub-stantial diameters. As these devices are correspondingly heavy, they require operation by two men and they must be knocked around the pipe socket. In the embodimen~ of Figure 6, the device can be opened only by means of the one bail 30'. On the other hand, in the embodiment of Figure 5, the device can be opened by either of the two handles 30' or 26'. Due to the large weight of the device, it will frequently be suspended ~om a cable and the opening then can be implemented every time by one man from the side closest to him.
In an alternative embodiment to the design sho~n in the drawings, the handle 2 also can be made to be ro~
tati.onal about its horiæontal axl~ 26. In that case, it ls not the pivot-lng but the rotatlonal motlon which is transmitt~d to the locking system 10, :Lmplemente~ Eor in~tance also by a bowden cable (omitted) in lieu o~ the 2S collnection rod 8.
The drawings show the components of the closure mea~s 6 of the locking system 10 in the ~orm oE elements mounted on the ~aws. The cLosure-means components (excep-tion, of course, being made oE ~he handle 2), however, can be designecl to be sunk in part or in whole into the jaws (omitted).
The inserting and centering device for associated screw in pipes shown in the drawings takes into account optimal biotechnical factors. Obviously, the handles 2 and 24 can be mounted centrally, that is, diametrically when ~ ~ 6~ ~3 the closed position is achieved. Furthermore, they may also be closer to the hinge 36. The design shown and described, in any event, assures that the device can be applied from ~he front and can also be removed toward the front, whereby its operation is substantially made easier.
The drawings of Figures 4 through 7 show an insertion and centering device 1' for (omitted) associated screw-in pipes, in particular ~or the sinking of pipes.
This device includes two semi-cylindrical jaws 2' and 4' connected together in articulating manner by a hinge or a joint 6'. The cylindrical inside surfaces 8', 10' of these jaws are provided with annular projections 12', 14', each with a downward annular shoulder 16' and 18', respectively. By means o this shoulder, the device rests on the edge oE the socket oE the pipe when in the assembled state. The jaws are provided at their upper ends with a conical flaring 20' and 22', respectively, joinlng the said projections. Two handles 24', 26' and 28', 30', re~pectively, are mounted next ~o each other in the cir-cumerential direction on the outside o~ the jaws 2' and 4', and assume the shape oE balls. The bail 30' o~ the jaw 4' Ls designed to be part oE a closure means 32'. To that end, the baLl 30' ls mo~mted to be pivotable at :Lts one end 34' about an axl.s 36'. A hook 40' is forrned at 2S the other end 38' oE the bail 30' and overlaps a tooth 42' mounted on the other Jaw 2' when these jaws are closed, as best shown Ln FLgures 5 through 7. PreEerably, the clasure means 32' is designed to be selE-latchLng. The end 38' of the bail 30' is made to pass through a U-shaped or rec~angu:Lar eye 44' which acts as a guide means and as a stop for the plvoting motion. A compression spring 46' is mounted within the eye to load the pivoting bail 30' towards the closed position.
In the embodiment shown in Figure 5, the bail 26' of the other jaw 2' i8 adjacent the closure means 32' and also is pivotable, providing a closure-means opener. To ~ 3 that end, the bail 26', just as bail 30l, is mounted in pivotable manner by its one end 48' about a fulcrum 50' on the jaw 2'. The other free end 52 ' of the bail 26' passes underneath the outer end, i.e. the hook 40' of the bail 30' in such a manner that bail 30' is moved by the outward pivoting motion of the bail 26' from the closed position into the open position. The end 52 ' of the bail 26' also is made to pass through a U-shaped or rectangular eye which acts as a guide. A compression spring may be mounted also in this eye 54' to load the bail 26' toward the closed position of the closure means 32'. ~lowever, such a spring is not mandatory.
Furthermore, the loading of the bail 30' and/or 26' can be implemented by using torsion springs mounted in the vicinity of the fulcra 36' or 50'.
F'igure 6 shows a simplified design of the in-serting and centering device. In this embodiment, the bail 26' of Figure 5 is again designed to be a fixed bail 56', as are the bails 24' and 28'. Otherwise, the device of Figure 6 is identical with that of Figure 5. The salhe components Eor the two devices therefore are denoted by the same references cmd the descr:Lption relating to Figure 5 should be considered for :Eurther accounts.
Flgure 7 shows a third embodiment oE the lnsert-~.ng and centering dev:Lcc. The bail 30' of the devices oEFi~ures S and 6 i8 designed to be a spring-~teel bail 58'.
This spring-s~eel bail 58' ig rlgldly mo~mted at i~s end 60' to the jaw ~' and is loaded by its own stres.s in the directlon o~ closing of the closure means 32'. In the device of Fj.gure 7, the bail near the closure means 32' also is deslgned to be a Eixed bail 56'. This bail 56', however, may be de~signed also to be an elastic bail 62' and may, like the bail 26' of Figure S, serve as a closure-means opener. Otherwise, the embodiment of Figure 7 corresponds to ~he devices of Figures 5 and 6. Accord~
ingly, the components identical with those of the devices .
':
of Figures 5 and 6 are denoted by the same references and to prevent unnecessary repetitions the descriptions relating to Figures 5 and 6 should be considered.
The inserting and centering device of Figures ~ through 7 is intended especially for pipes of sub-stantial diameters. As these devices are correspondingly heavy, they require operation by two men and they must be knocked around the pipe socket. In the embodimen~ of Figure 6, the device can be opened only by means of the one bail 30'. On the other hand, in the embodiment of Figure 5, the device can be opened by either of the two handles 30' or 26'. Due to the large weight of the device, it will frequently be suspended ~om a cable and the opening then can be implemented every time by one man from the side closest to him.
Claims (17)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An inserting and centering device for associated screw-in pipes, in particular to be used when sinking pipes, having two semi-cylindrical jaws connected in an articulated manner and provided on their cylindrical inside surfaces with an annular projection comprising an annular shoulder to rest on the socket edge of a pipe and further provided at their upper ends with a conical flare joining the said projections, each of said jaws being equipped with a handle, said device further including a closure means to keep the jaws together when in the closed position wherein the jaws enclose the pipe socket with play, characterized in that one handle of one of the jaws simultaneously forms a part of the closure means and that said one handle is pivotably mounted on said one jaw and is operationally connected by a rotationally supported connecting rod to a locking system.
2. Device per claim 1, characterized in that the locking system includes a double lever engaged at one free end by the connecting rod and provided at the other free end with a hook which in the closed position of the jaws overlaps a tooth mounted on the other jaw.
3. Device per claims 1 or 2, characterized in that the jaws are provided with centrally mounted handles whereby these handles are diametrically opposite when the jaws are closed.
4. Device per claims 1, 2 or 3 characterized in that said one handle can rotate about its horizintal axis.
5. Device per claims 1, 2, or 3 characterized in that said one handle is connected by a bowden cable to the locking system.
6. Device per claims 1, 2 or 3 characterized in that the components of the closure means or of the locking system or several of these components are sunk in part or in whole into the jaws.
7. An inserting and centering device for associated screw-in pipes, in particular for sinking pipes with large diameters, having two semi-cylindrical jaws connected to each other in an articulared manner and provided or their cylindrical inside surfaces iwth an annular projection including an annular shoulder to rest on the socket edge of the pipe, said jaws further being provided with a conical flare at their upper end joining the projection, said device further including a closure means to keep together the two jaws when in the closed position, wherein they enclose the socket with play, characterized in that each jaw is provided wth handles mounted next to each other in the circumferential direction, of which one handle simulataneously forms a part of the closure means.
8. Device per claim 7, characterized in that said one handle forming a part of the closure means comprises a bail of which the other end is designed to be a closing element of the closure means and cooperates with a closing element of the closure means mounted on the other jaw.
9. Device per claim 8, characterized in that said closing element of said bail comprises a hook and said closing element of the jaw comprises a tooth overlapped by said hook when the jaws are in the closed position.
10. Device per claim 9, characterized in that all the handles comprise bails.
11. Device per claim 10, characterized in that the bail near the closure means and belonging to the other jaw comprises an additional opener for the closure means.
12. Device per claim 11, characterized in that one end of a second bail is rotationally mounted on the other jaw and the other end is mounted in such a manner that by pivoting said second bail to the outside, said first mentioned bail forming a part of the closure means will be moved out of the closed position.
13. Device per claim 12, characterized in that the end of the bail passes underneath the hook of the bail.
14. Device per claim 12, characterized in that at least the bail forming a closing element is loaded by a spring towards the closed position of the closure means.
15. Device per claim 14, characterized in that the bails to guide and limit the pivoting motion each are made to pass through a U-shaped or rectangular eye mounted on the associated jaw.
16. Device per claim 15, characterized in that a compression spring is mounted at least in the eye of the bail forming a part of the closure means and loads said bail.
17. Device per claim 14, characterized in that at least the pivoting bail comprising a part of the closure means is formed by a spring-steeL bail which is pre-stressed when the closure means is in the closed position, one end or said spring-steel bail being rigidly connected to the associated jaw.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833331867 DE3331867A1 (en) | 1983-09-03 | 1983-09-03 | Inserting and centring device for pipes to be screwed to one another |
| DEP3331867.0 | 1983-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1266963A true CA1266963A (en) | 1990-03-27 |
Family
ID=6208190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000456643A Expired CA1266963A (en) | 1983-09-03 | 1984-06-14 | Device for inserting and centering associated screw- in pipes |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS6060391A (en) |
| CA (1) | CA1266963A (en) |
| DE (1) | DE3331867A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3537471C1 (en) * | 1985-10-22 | 1987-01-08 | Wilfried Dreyfuss | Insertion and centring device for pipes to be screwed to one another |
| JP6259543B1 (en) * | 2017-10-02 | 2018-01-10 | 嘉正 佐藤 | Double air supply / exhaust tube disconnection tool and double air supply / exhaust tube disconnection method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1660853A (en) * | 1924-10-29 | 1928-02-28 | Elihu C Wilson | Automatic pipe tongs |
| US4213237A (en) * | 1978-09-25 | 1980-07-22 | Winslow Whiting | Stabbing guide |
-
1983
- 1983-09-03 DE DE19833331867 patent/DE3331867A1/en active Granted
-
1984
- 1984-05-09 JP JP9115984A patent/JPS6060391A/en active Granted
- 1984-06-14 CA CA000456643A patent/CA1266963A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6060391A (en) | 1985-04-06 |
| JPH0434038B2 (en) | 1992-06-04 |
| DE3331867A1 (en) | 1985-03-21 |
| DE3331867C2 (en) | 1993-01-07 |
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