CA1254738A - Detachable receptacle and stripping apparatus for stripping lagging - Google Patents
Detachable receptacle and stripping apparatus for stripping laggingInfo
- Publication number
- CA1254738A CA1254738A CA000526469A CA526469A CA1254738A CA 1254738 A CA1254738 A CA 1254738A CA 000526469 A CA000526469 A CA 000526469A CA 526469 A CA526469 A CA 526469A CA 1254738 A CA1254738 A CA 1254738A
- Authority
- CA
- Canada
- Prior art keywords
- envelope
- stripping
- opening
- receptacle
- fastening means
- 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
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- Containers And Plastic Fillers For Packaging (AREA)
Abstract
ABSTRACT
A detachable bag (13) and shroud (12) which combine to form a strippng apparatus (11) for stripping and collecting fibrous cladding material (27) from a pipe (25). The shroud (12) is adapted to be detachably and sealingly secured to the pipe (25) and the bag (13) is likewise secured to the shroud (12). The bag (13) includes a fastening means (20) to attach an inner envelope (16) thereof to the bottom opening (19b) of the shroud and an outer cover (17) which can be sealingly attached to the outerside of the shroud (12) enclosing the envelope 116) and fastening means (20). The envelope (16) and shroud (12) are each provided with "Velcro" closure strips 121) along their respective inner faces adjacent the fastening means (20) to enable the envelope (16) and shroud (12) to be sealingly closed independently of the other either side of the fastening means (20) to prevent external exposure to the contents of either during attachment and detachment of the bag from the shroud.
A detachable bag (13) and shroud (12) which combine to form a strippng apparatus (11) for stripping and collecting fibrous cladding material (27) from a pipe (25). The shroud (12) is adapted to be detachably and sealingly secured to the pipe (25) and the bag (13) is likewise secured to the shroud (12). The bag (13) includes a fastening means (20) to attach an inner envelope (16) thereof to the bottom opening (19b) of the shroud and an outer cover (17) which can be sealingly attached to the outerside of the shroud (12) enclosing the envelope 116) and fastening means (20). The envelope (16) and shroud (12) are each provided with "Velcro" closure strips 121) along their respective inner faces adjacent the fastening means (20) to enable the envelope (16) and shroud (12) to be sealingly closed independently of the other either side of the fastening means (20) to prevent external exposure to the contents of either during attachment and detachment of the bag from the shroud.
Description
~s~
- lA -TIIIS INVE~TI~N relates to improvements in or relatin~ to stripping apparatus particularlv adapted for stripping fibrous claclding material from a body.
In recent times there has been a growin~ awareness amon~st the public about the dangers involved with the handlin~ of fibrous materials, particularly in the li~ht of the numerous respiratory problems affl;ctin~ persons who have worked in an environment containing fibrous materials.
This has been highl;ghted particularly ;n view of the problems in handling fibrous asbestos material and the relatively high incidence of persons working with the same contracting asbestosis. llnfortunately Eibrous materials hazardous to health, such as fibrous asbestos material have been used extensively in the building industry in the past as cladding and lagging materials. As a result of increasing public pressure, it has been necessary for the authorities to insist upon the removal or the melioriation of these materials in areas that pose a possible hazarcl to the health of persons therein. Consequently, eleborate provisions and regulations have been enforced to control the removal or melioriation of these materials, so as to minimise the risk to persons effecting these operations.
As a result, the use of protective apparatus in the form of flexible bags covering a body bearing fibrous material and/or protective clothing in the form of face masks and the like have become mandatory accessories to workmen involved with these operations.
To assist in removing lagging materials from pipes and the like, a detachable bag which sealingly encompasses a section of the pipe has been marketecl for several years under the trade mark "Asbebag" in various countries of the world including Australia. This bag is formed with a pair 5g~3~
of specially shaped flaps at ;ts open end which ~re placed about a longitudinal portion of the pipe from opposite sides thereof so as to form a circumscrihin~ sleeve portion about the pipe. A fastenin~ arran~ement provided on the meeting edges of the flaps can then be operated to secure the bag to the pipe. The opposite ends of the so formed sleeve portion can then be tied to sealin~ly en~age the bag with the pipe. The bag is also formed with a pair of arm portions which extend inwardly of the bag ancl which terminate with gloves so that an operator can insert his hands and perform manipulations within the interior of the bag for work on the pipe whilst maintainin~ isolation between the interior of the bag and the operator's hands.
Thus fibrous material can be stripped from the pipe and collected within ba~ without risking exposure to the stripped fibrous material.
Under the health regulations in Australia it is only practical to use the ba~ once, whereupon becoming full, it must be removed from the pipe and disposed of without allowing the stripped fibrous material to escape Erom the bag and come into contact with the operator. Accordin~ly, it is usually necessary to use several ba~s to completely strip a pipe covered in laggin~. Ilnfortunately, due to the special shape of the ba~s, manufacturin~ costs of the bags are exhorbitant and hence costs in completin~ a strippin~
operation can be excessive.
It is an object of the present invention to provide a receptacle for use with a strippin~ apparatus for stripping fibrous claddinK material from an elonoate body to enable stripped fibrous claddin~ material to be collected and be clisposed of without recluirin~ the removal and disposal of the entire strippin~ apparat-ls.
It is a preferred object of the invent;on to prov;cle a receptacle for use w;th a strippin~ apparatus for 3~
strippin~ fibrous cladding material from an elonF~ate body to enable stripped fibrous claddi.n~ materia] to be collected, which can be detached Erom a strippin~ means secured to the body, in a manner such that the col].ected ~ibrous material can be r-,aintained in isolation from the operator and the surrounding environment at all tirnes.
In accordance with one aspect of the present invention, there is provi.ded a detachahle receptacle Eor attachment to a protective stripping means used for strippin~ fibrous claddin~ material from an elongate body, said receptacle being adapted to collect said stripped material and comprisin~: a flexible envelope of substantially impermeable material having an openin~ to allow for the deposition of said cladding material therein; fastenin~
means to integrally connect the receptacle to a correspondin~ opening provided on said strippin~ rneans when it is secured to said body enablin~ communication between the evelope and stripping apparatus interior via said openings; envelope closure means provided on said envelope and disposed apart from said Eastenin~ means to close the envelope openin~ and substantially seal the contents of the envelope during attachment or detachment to said apparatus independently of said fastening means;
and an outer cover to enclose said envelope so as to facilitate containment of the envelope therein when sealed.
Preferably, the peripheral ed~e of the outer cover encompassing said envelope is capable of being releasahly and sealin~ly enga~ed to the outerside of the strippin~
means .
The envelope closure means preferahly comprises envelope closure strips attached to opposin~ inner faces of the envelope whereby the strips are adapted to interlock with each other when pressed to~ether.
73~3 The envelope is preferahly provided with a dependin~ flap means to cover said envelope closure means from contacting cladding material during passage of the material through the envelope opening when the receptacle is attached to the strippin~ means.
In accordance with another aspect of the present in~ention, there is provided a stripping apparatus for stripping fibrous cladding material from an elongate body, comprising:-a stripping means adapted to be detachably and sealinglysecured at one end to the longitudinal portion of said hody, the stripping means being formed of flexible material and having means whereby an operator can insert his hand and perform manipulations within the interior o:E
the stripping means for work on said body whilst maintaining isolation between the interior of said stripping means and the operatorls hands, and a stripping means opening at the other end through which stripped cladding material may pass for collection; and a detachable receptacle for collecting said cladding material stripped from the body comprising: a flexible envelope of substantially impermeable material having an opening to allow for the deposition of said cladding material therein; fastening means to ;ntegrally connect the receptacle to said stripping means openin~ enabling communication between the envelope and stripping apparatus interior via said openings; envelope closure means provided on said envelope and disposed apart from said fastening means to close the envelope openin~ and substantially seal the contents of the envelope duri.ng attachment or detachment to said apparatus independently of said fastening means; and an outer cover to enclose said envelope so as to facilitate containment of the envelope therein when sealed~
~2S~i'3~
Preferably, the stripping means -is provided with str;pping closure means disposecl apart from said fastenin~ means to close the stripping means opening and substantially seal the same during attachment or detachment of said receptacle.
The closure means preferablv comprises strippin~ closure strips attached to opposing inner faces of said stripping means, whereby the strips are adapted to interlock with each other when pressed together.
The openings are preferably normally biased open by the provision of a stiffening stay means formed within a said opening.
The stripping apparatus is preferably provided with depending flap means to cover said closure means from contacting cladding material during passage of the same to the receptacle.
This invention will be better understood in the light of the following description of one specific embodiment thereof. The description is made with reference to the accompanying drawings wherein:-Fig. 1 is a front perspective view showing thestripping apparatus attached to a pipe bearing fibrous cladding material;
Fig. 2 is a sectional end elevation taken along Section A-A of Fig. 1;
Fig. 3 is a ~ront perspective view of the stripl~ing means;
~ig. 4 is a sectional end elevation taken alon~ Section A-A of Fig. 3;
Fig. 5 is a front perspective view of the detachahle receptacle;
473~
Fiy~. 6 is a sectional end elevation taken alonp~ Section A-A of Fig. 5.
The em~odiment is directed towards a stripping apparatus which is specifically shaped for stripping fibrous cladding material in the form of lag~ing from a p;pe.
A stripping apparatus 11 essentially comprises a stripping means 12 and a detachable receptacle 13.
The receptacle 13 is constructed from flexible, impermeable material, which is preferahly a transparent, plastics material such as polythene, and has all seams fully welded. The receptacle is in the form of a ba~ and consists of an envelope 16 encompassed with an outer cover 17. The envelope is attached to the outer cover by means of a welded seam 1~ disposed along the bottom of the receptacle only, thereby facilitating relative independent manipulation of the envelope with respect to the outer cover and vice versa.
The envelope 16 has an envelope opening l9a at its upper end which in turn is provided with a fastener 20a which forms part of a fastening means in the form of a sliding clasp Eastener 20. The envelope is also provided with an envelope closure means which comprises a pair of envelope closure strips 21 attached to the opposing inner faces of the envelope and disposed apart from the fastener 20a. The closure strips are preferably co-operating parts of the type lcnown under the trade mark "Velcro", which are adapted to interlock with each other when pressed together.
A pair of depending flap means 22 are provided on the inner face of the envelope immediately above the envelope closure strips 21 to cover and protect the same from cladding material which may impinge thereupon during ~5~
passage through the envelope opening. The outer cover 17 is constructed to closely conform to the shape and size of the envelope therein. In addition, the sides of the receptacle may be gusseted to enable both the envelope and outer cover to be opened sufficiently for attachment to the stripping means 12 and to maximise the size of the envelope opening 19a for the passage of stripped claddin~
material therethrough.
The stripping means 12 is formed of flexible, impermea~le material which is preferaly a transparent plastics material such as heaby duty P.V.C. The top of the stripping means is provided with a pair of side flaps 23 located at opposite sides thereof which co-extend to form a pendent working portion 24. The flaps are shaped to form a sleeve portion at the top of the stripping means which approximately conforms to the size of the pipe 25 to which the stripping means is attached. Provided along the top terminating edge of each flap is a co-operating component of a sliding clasp fastener 26 which enables the stripping means to be detachably and sealingly secured to a portion of a pipe so that the flaps effectively wrap around the outer extremity of the pipe circumscribing the fibrous lagging material 27 therein one flap is longer than the other to enable the fastener to be displaced to one side Of the pipe for ease of fastening.
The stripping means is also provided with a pair of quick release tightening straps 14 for sealingly fastening the stripping means opposite the arm portions 28 so that an operator may locate various tools therein to facilitate the stripping operation. Located ahove the pouch and formed integrally with the strippin~ means, is a nozzle 3~
to which a hose may be attached and fluid~ preferably water, injected into the interior of the shroud and receptacle to facilitate cleaning the inside thereof from _ ~ _ extraneous cladcling material. Iike with the receptacle, the stripping means is provided with gussets l5 along the sides of the working portion 2~1, to allow widening of the same, thereby facilitating the stripping operation.
Now describing the method o usinF, the stripping apparatus, the detachable rec2eptacle 13 is attached to the bottom of theStripping meanS~-by conjoining the respective fasteners 20a, 20b and operating the clasp fastener to connect the respective openings 19 of the receptacle and stripping means. The closure means are separated and covered with the respective depending flap means so that the stripping apparatus defines an interna] chamber.
To sealingly close the interconnection between the bottom of the stripping means and the receptacle, the peripheral edge 35 of the outer cover 17 is disposed proximate the joined fasteners 20 and is attached to the outer side thereof by reinforcing tape to completely seal the joint.
The top flaps of the stripping means, which are separated, are then placed ahout the sides of the pipe and lagging, and closed thereabout by means of the sliding clasp fastener 26 to form the circumscribing sleeve portion about the pipe. The quick release tightening straps l4 are then tightened about the lateral arms 23 to sealingly so formed sleeve portion about the pipe.
The pendent working portion 24 forms a working station or an operator to strip la~ging from the pipe by havin~ a pair of arm portions 2~ with gloves at the ends thereof extending inwardly towards the interior of the shroud through which an operator ean insert his hands and perform manipulations therein for work on the pipe whilst maintaining isolation between the interior of the stripping means ancl the operator's han(ls.
5fl~7~
_ 9 _ The bottom of the stripping means forms a stripping means opening l9b which is provided with a Eastener 20b which forms the other part of the fastening means in the form of the clasp sliding fastener 20. The bottom of the strippi.ng means defining the opening 19b is hemmed to define a pocket 29 in which is inserted a stiffening stay means 30, which consists of a flexible nylon oval hoop, to bias the stripping means opening l9b towards the open posi.tion.
Disposed apart from the stripping means fastener 20b is a stripping closure means which consists of a pair of stri.pping means closure strips 31 attached to the respective opposing inner faces of the stripping means. As with the receptacle closure strips 21, the stripping means closure strips 31 are the co-operating parts of the type known under the trade mark "Velcro" and are adapted to interlock wi.th each other when pressing together, thereby sealing the interior of the stripping means. Similarly, a pair of dependin~ flap means 32 are attached to the inner faces of the stripping means above the respective stripping means closure strips to cover and protect the same from cladding material which may contact and impinge thereupon, duri.ng passa~e of the stripped materi.al into the receptacle.
A pouch 33 is attached to the inner surface of the stripping means opposite the arm portions 28 so that an operator may locate various tools therein to facilitate the stripping operation. Located a~ove the pouch and formed integrally with the stripping means, is a nozzle 34 to which a hose may be attached and fluid, preferably water, injected into the interior of the stripping means and receptacle to facilitate cleanin~ the insi.de thereof from extraneous cladding material. Like wi.th the receptacle, the stripping mearls, is provided with gussets 15 along the sides of the working portion 24, to allow 3~
widening of the same, therebv facilitatîn~ the stripping operati.on.
Now describi.ng the method of using the stripping apparatus, the detachable receptacle 13 is attached to the bottom of the stripping means 12 by conjoini.ng the respective fasteners 20a, 20b and operating the clasp fastener to connect the respective openings 19 of the receptacle and stri.pping means. The closure means are separated and covered wi.th the respective dependin~ flap means so that the stripping apparatus defines an lnternal chamber.
To sealingly close the interconnection between the hottom of the stripping means ancl the receptacle, the peripheral edge 35 of the outer cover 17 is disposed proximate the joined fasteners 20 and is attached to the outer side thereof by reinforcing tape to completely seal the joint.
The top flaps of the stripping means, which are separated~
are then placed about the sides of the pi.pe and lagging, and closed thereabout by means of the slidin~ clasp fastener 26 to form the circumscribing sleeve portion about the pipe. The quick release tightening straps 14 are then tightened about the lateral arms 23 to sealingly engage the sleeve portion of the strippin~ means to the pipe. At this point the operator may insert his hands within the arm portions 28 into the ~loves and commence stripping the lagging from the pipe. Stripped lagging material may then fall within the strippin~ apparatus and be deposited within the envelope of the detachahle receptacle.
~`o remove the detachable receptacle 13 from the strippi.ng means 12 the operator can firstly wash the interior of the stripping means and receptacle by attaching a hose to the nozzle 34 and wettin~ down extraneous fihrous material L73~3 therein. Subsecluently, the dependin~ flaps in the receptacle can then be lifted and the co-operating envelope closure strips pressed together, sefllinR the contents of the envelope from the stripping means. This operation can then be repeated with the stripping means closure strips sealing the contents of the stripping means from the region surrounding the interconnected fasteners.
The reinforcing tape can then be removed from the joint interconnecting the receptacle to the strippin~ means, and the clasp fastener 20 released, detaching the receptacle from the stripping means. Subsequently, the sealed envelope may be folded within the outer cover 17 and tie wire applied about the peripheral edge of the outer cover enclosing the sealed envelope therein.
At this point a used receptacle may he disposed of and a new receptacle attached to the stripping means by re-applying the clasp fastener 20 and reinforcing the Joint by locating the peripheral edge of the outer cover proximate the joint and sealin~ with reinforcing tape. The respective closure strips may then be separated and covered by the depending flaps allowing the operator to continue with the stripping operation.
In this manner, the same stripping means may be used repeatedly on a section of pipe without necessitating replacement thereof thus a number of disposable detachable receptacles can be used with the same stripping means, improving the efficiency and minimizing costs in completing a stripping operation.
It should be appreciated that the scope of the present invention is not limited to the scope of the specif;c emhodiment herein described. Partic-llarly, the invention is not limited to stripping lagging from pipes, but it may be embodied in different configurations so that it can be used to strip fribrous cladding materifll from other tvpes o~ ~odies bearing tlle same.
- lA -TIIIS INVE~TI~N relates to improvements in or relatin~ to stripping apparatus particularlv adapted for stripping fibrous claclding material from a body.
In recent times there has been a growin~ awareness amon~st the public about the dangers involved with the handlin~ of fibrous materials, particularly in the li~ht of the numerous respiratory problems affl;ctin~ persons who have worked in an environment containing fibrous materials.
This has been highl;ghted particularly ;n view of the problems in handling fibrous asbestos material and the relatively high incidence of persons working with the same contracting asbestosis. llnfortunately Eibrous materials hazardous to health, such as fibrous asbestos material have been used extensively in the building industry in the past as cladding and lagging materials. As a result of increasing public pressure, it has been necessary for the authorities to insist upon the removal or the melioriation of these materials in areas that pose a possible hazarcl to the health of persons therein. Consequently, eleborate provisions and regulations have been enforced to control the removal or melioriation of these materials, so as to minimise the risk to persons effecting these operations.
As a result, the use of protective apparatus in the form of flexible bags covering a body bearing fibrous material and/or protective clothing in the form of face masks and the like have become mandatory accessories to workmen involved with these operations.
To assist in removing lagging materials from pipes and the like, a detachable bag which sealingly encompasses a section of the pipe has been marketecl for several years under the trade mark "Asbebag" in various countries of the world including Australia. This bag is formed with a pair 5g~3~
of specially shaped flaps at ;ts open end which ~re placed about a longitudinal portion of the pipe from opposite sides thereof so as to form a circumscrihin~ sleeve portion about the pipe. A fastenin~ arran~ement provided on the meeting edges of the flaps can then be operated to secure the bag to the pipe. The opposite ends of the so formed sleeve portion can then be tied to sealin~ly en~age the bag with the pipe. The bag is also formed with a pair of arm portions which extend inwardly of the bag ancl which terminate with gloves so that an operator can insert his hands and perform manipulations within the interior of the bag for work on the pipe whilst maintainin~ isolation between the interior of the bag and the operator's hands.
Thus fibrous material can be stripped from the pipe and collected within ba~ without risking exposure to the stripped fibrous material.
Under the health regulations in Australia it is only practical to use the ba~ once, whereupon becoming full, it must be removed from the pipe and disposed of without allowing the stripped fibrous material to escape Erom the bag and come into contact with the operator. Accordin~ly, it is usually necessary to use several ba~s to completely strip a pipe covered in laggin~. Ilnfortunately, due to the special shape of the ba~s, manufacturin~ costs of the bags are exhorbitant and hence costs in completin~ a strippin~
operation can be excessive.
It is an object of the present invention to provide a receptacle for use with a strippin~ apparatus for stripping fibrous claddinK material from an elonoate body to enable stripped fibrous claddin~ material to be collected and be clisposed of without recluirin~ the removal and disposal of the entire strippin~ apparat-ls.
It is a preferred object of the invent;on to prov;cle a receptacle for use w;th a strippin~ apparatus for 3~
strippin~ fibrous cladding material from an elonF~ate body to enable stripped fibrous claddi.n~ materia] to be collected, which can be detached Erom a strippin~ means secured to the body, in a manner such that the col].ected ~ibrous material can be r-,aintained in isolation from the operator and the surrounding environment at all tirnes.
In accordance with one aspect of the present invention, there is provi.ded a detachahle receptacle Eor attachment to a protective stripping means used for strippin~ fibrous claddin~ material from an elongate body, said receptacle being adapted to collect said stripped material and comprisin~: a flexible envelope of substantially impermeable material having an openin~ to allow for the deposition of said cladding material therein; fastenin~
means to integrally connect the receptacle to a correspondin~ opening provided on said strippin~ rneans when it is secured to said body enablin~ communication between the evelope and stripping apparatus interior via said openings; envelope closure means provided on said envelope and disposed apart from said Eastenin~ means to close the envelope openin~ and substantially seal the contents of the envelope during attachment or detachment to said apparatus independently of said fastening means;
and an outer cover to enclose said envelope so as to facilitate containment of the envelope therein when sealed.
Preferably, the peripheral ed~e of the outer cover encompassing said envelope is capable of being releasahly and sealin~ly enga~ed to the outerside of the strippin~
means .
The envelope closure means preferahly comprises envelope closure strips attached to opposin~ inner faces of the envelope whereby the strips are adapted to interlock with each other when pressed to~ether.
73~3 The envelope is preferahly provided with a dependin~ flap means to cover said envelope closure means from contacting cladding material during passage of the material through the envelope opening when the receptacle is attached to the strippin~ means.
In accordance with another aspect of the present in~ention, there is provided a stripping apparatus for stripping fibrous cladding material from an elongate body, comprising:-a stripping means adapted to be detachably and sealinglysecured at one end to the longitudinal portion of said hody, the stripping means being formed of flexible material and having means whereby an operator can insert his hand and perform manipulations within the interior o:E
the stripping means for work on said body whilst maintaining isolation between the interior of said stripping means and the operatorls hands, and a stripping means opening at the other end through which stripped cladding material may pass for collection; and a detachable receptacle for collecting said cladding material stripped from the body comprising: a flexible envelope of substantially impermeable material having an opening to allow for the deposition of said cladding material therein; fastening means to ;ntegrally connect the receptacle to said stripping means openin~ enabling communication between the envelope and stripping apparatus interior via said openings; envelope closure means provided on said envelope and disposed apart from said fastening means to close the envelope openin~ and substantially seal the contents of the envelope duri.ng attachment or detachment to said apparatus independently of said fastening means; and an outer cover to enclose said envelope so as to facilitate containment of the envelope therein when sealed~
~2S~i'3~
Preferably, the stripping means -is provided with str;pping closure means disposecl apart from said fastenin~ means to close the stripping means opening and substantially seal the same during attachment or detachment of said receptacle.
The closure means preferablv comprises strippin~ closure strips attached to opposing inner faces of said stripping means, whereby the strips are adapted to interlock with each other when pressed together.
The openings are preferably normally biased open by the provision of a stiffening stay means formed within a said opening.
The stripping apparatus is preferably provided with depending flap means to cover said closure means from contacting cladding material during passage of the same to the receptacle.
This invention will be better understood in the light of the following description of one specific embodiment thereof. The description is made with reference to the accompanying drawings wherein:-Fig. 1 is a front perspective view showing thestripping apparatus attached to a pipe bearing fibrous cladding material;
Fig. 2 is a sectional end elevation taken along Section A-A of Fig. 1;
Fig. 3 is a ~ront perspective view of the stripl~ing means;
~ig. 4 is a sectional end elevation taken alon~ Section A-A of Fig. 3;
Fig. 5 is a front perspective view of the detachahle receptacle;
473~
Fiy~. 6 is a sectional end elevation taken alonp~ Section A-A of Fig. 5.
The em~odiment is directed towards a stripping apparatus which is specifically shaped for stripping fibrous cladding material in the form of lag~ing from a p;pe.
A stripping apparatus 11 essentially comprises a stripping means 12 and a detachable receptacle 13.
The receptacle 13 is constructed from flexible, impermeable material, which is preferahly a transparent, plastics material such as polythene, and has all seams fully welded. The receptacle is in the form of a ba~ and consists of an envelope 16 encompassed with an outer cover 17. The envelope is attached to the outer cover by means of a welded seam 1~ disposed along the bottom of the receptacle only, thereby facilitating relative independent manipulation of the envelope with respect to the outer cover and vice versa.
The envelope 16 has an envelope opening l9a at its upper end which in turn is provided with a fastener 20a which forms part of a fastening means in the form of a sliding clasp Eastener 20. The envelope is also provided with an envelope closure means which comprises a pair of envelope closure strips 21 attached to the opposing inner faces of the envelope and disposed apart from the fastener 20a. The closure strips are preferably co-operating parts of the type lcnown under the trade mark "Velcro", which are adapted to interlock with each other when pressed together.
A pair of depending flap means 22 are provided on the inner face of the envelope immediately above the envelope closure strips 21 to cover and protect the same from cladding material which may impinge thereupon during ~5~
passage through the envelope opening. The outer cover 17 is constructed to closely conform to the shape and size of the envelope therein. In addition, the sides of the receptacle may be gusseted to enable both the envelope and outer cover to be opened sufficiently for attachment to the stripping means 12 and to maximise the size of the envelope opening 19a for the passage of stripped claddin~
material therethrough.
The stripping means 12 is formed of flexible, impermea~le material which is preferaly a transparent plastics material such as heaby duty P.V.C. The top of the stripping means is provided with a pair of side flaps 23 located at opposite sides thereof which co-extend to form a pendent working portion 24. The flaps are shaped to form a sleeve portion at the top of the stripping means which approximately conforms to the size of the pipe 25 to which the stripping means is attached. Provided along the top terminating edge of each flap is a co-operating component of a sliding clasp fastener 26 which enables the stripping means to be detachably and sealingly secured to a portion of a pipe so that the flaps effectively wrap around the outer extremity of the pipe circumscribing the fibrous lagging material 27 therein one flap is longer than the other to enable the fastener to be displaced to one side Of the pipe for ease of fastening.
The stripping means is also provided with a pair of quick release tightening straps 14 for sealingly fastening the stripping means opposite the arm portions 28 so that an operator may locate various tools therein to facilitate the stripping operation. Located ahove the pouch and formed integrally with the strippin~ means, is a nozzle 3~
to which a hose may be attached and fluid~ preferably water, injected into the interior of the shroud and receptacle to facilitate cleaning the inside thereof from _ ~ _ extraneous cladcling material. Iike with the receptacle, the stripping means is provided with gussets l5 along the sides of the working portion 2~1, to allow widening of the same, thereby facilitating the stripping operation.
Now describing the method o usinF, the stripping apparatus, the detachable rec2eptacle 13 is attached to the bottom of theStripping meanS~-by conjoining the respective fasteners 20a, 20b and operating the clasp fastener to connect the respective openings 19 of the receptacle and stripping means. The closure means are separated and covered with the respective depending flap means so that the stripping apparatus defines an interna] chamber.
To sealingly close the interconnection between the bottom of the stripping means and the receptacle, the peripheral edge 35 of the outer cover 17 is disposed proximate the joined fasteners 20 and is attached to the outer side thereof by reinforcing tape to completely seal the joint.
The top flaps of the stripping means, which are separated, are then placed ahout the sides of the pipe and lagging, and closed thereabout by means of the sliding clasp fastener 26 to form the circumscribing sleeve portion about the pipe. The quick release tightening straps l4 are then tightened about the lateral arms 23 to sealingly so formed sleeve portion about the pipe.
The pendent working portion 24 forms a working station or an operator to strip la~ging from the pipe by havin~ a pair of arm portions 2~ with gloves at the ends thereof extending inwardly towards the interior of the shroud through which an operator ean insert his hands and perform manipulations therein for work on the pipe whilst maintaining isolation between the interior of the stripping means ancl the operator's han(ls.
5fl~7~
_ 9 _ The bottom of the stripping means forms a stripping means opening l9b which is provided with a Eastener 20b which forms the other part of the fastening means in the form of the clasp sliding fastener 20. The bottom of the strippi.ng means defining the opening 19b is hemmed to define a pocket 29 in which is inserted a stiffening stay means 30, which consists of a flexible nylon oval hoop, to bias the stripping means opening l9b towards the open posi.tion.
Disposed apart from the stripping means fastener 20b is a stripping closure means which consists of a pair of stri.pping means closure strips 31 attached to the respective opposing inner faces of the stripping means. As with the receptacle closure strips 21, the stripping means closure strips 31 are the co-operating parts of the type known under the trade mark "Velcro" and are adapted to interlock wi.th each other when pressing together, thereby sealing the interior of the stripping means. Similarly, a pair of dependin~ flap means 32 are attached to the inner faces of the stripping means above the respective stripping means closure strips to cover and protect the same from cladding material which may contact and impinge thereupon, duri.ng passa~e of the stripped materi.al into the receptacle.
A pouch 33 is attached to the inner surface of the stripping means opposite the arm portions 28 so that an operator may locate various tools therein to facilitate the stripping operation. Located a~ove the pouch and formed integrally with the stripping means, is a nozzle 34 to which a hose may be attached and fluid, preferably water, injected into the interior of the stripping means and receptacle to facilitate cleanin~ the insi.de thereof from extraneous cladding material. Like wi.th the receptacle, the stripping mearls, is provided with gussets 15 along the sides of the working portion 24, to allow 3~
widening of the same, therebv facilitatîn~ the stripping operati.on.
Now describi.ng the method of using the stripping apparatus, the detachable receptacle 13 is attached to the bottom of the stripping means 12 by conjoini.ng the respective fasteners 20a, 20b and operating the clasp fastener to connect the respective openings 19 of the receptacle and stri.pping means. The closure means are separated and covered wi.th the respective dependin~ flap means so that the stripping apparatus defines an lnternal chamber.
To sealingly close the interconnection between the hottom of the stripping means ancl the receptacle, the peripheral edge 35 of the outer cover 17 is disposed proximate the joined fasteners 20 and is attached to the outer side thereof by reinforcing tape to completely seal the joint.
The top flaps of the stripping means, which are separated~
are then placed about the sides of the pi.pe and lagging, and closed thereabout by means of the slidin~ clasp fastener 26 to form the circumscribing sleeve portion about the pipe. The quick release tightening straps 14 are then tightened about the lateral arms 23 to sealingly engage the sleeve portion of the strippin~ means to the pipe. At this point the operator may insert his hands within the arm portions 28 into the ~loves and commence stripping the lagging from the pipe. Stripped lagging material may then fall within the strippin~ apparatus and be deposited within the envelope of the detachahle receptacle.
~`o remove the detachable receptacle 13 from the strippi.ng means 12 the operator can firstly wash the interior of the stripping means and receptacle by attaching a hose to the nozzle 34 and wettin~ down extraneous fihrous material L73~3 therein. Subsecluently, the dependin~ flaps in the receptacle can then be lifted and the co-operating envelope closure strips pressed together, sefllinR the contents of the envelope from the stripping means. This operation can then be repeated with the stripping means closure strips sealing the contents of the stripping means from the region surrounding the interconnected fasteners.
The reinforcing tape can then be removed from the joint interconnecting the receptacle to the strippin~ means, and the clasp fastener 20 released, detaching the receptacle from the stripping means. Subsequently, the sealed envelope may be folded within the outer cover 17 and tie wire applied about the peripheral edge of the outer cover enclosing the sealed envelope therein.
At this point a used receptacle may he disposed of and a new receptacle attached to the stripping means by re-applying the clasp fastener 20 and reinforcing the Joint by locating the peripheral edge of the outer cover proximate the joint and sealin~ with reinforcing tape. The respective closure strips may then be separated and covered by the depending flaps allowing the operator to continue with the stripping operation.
In this manner, the same stripping means may be used repeatedly on a section of pipe without necessitating replacement thereof thus a number of disposable detachable receptacles can be used with the same stripping means, improving the efficiency and minimizing costs in completing a stripping operation.
It should be appreciated that the scope of the present invention is not limited to the scope of the specif;c emhodiment herein described. Partic-llarly, the invention is not limited to stripping lagging from pipes, but it may be embodied in different configurations so that it can be used to strip fribrous cladding materifll from other tvpes o~ ~odies bearing tlle same.
Claims (15)
1. A detachable receptacle for attachment to a protective stripping means used for stripping fibrous cladding material from an elongate body, said receptacle being adapted to collect said stripped material and comprising:
a flexible envelope of substantially impermeable material having an opening to allow for the desposition of said cladding material therein; fastening means to integrally connect the receptacle to a corresponding opening provided on said stripping means when it is secured to said body enabling communication between the envelope and stripping apparatus interior via said openings; envelope closure means provided on said envelope and disposed apart from said fastening means to close the envelope opening and substantially seal the contents of the envelope during attachment or detachment to said apparatus independently of said fastening means; and an outer cover to enclose said envelope so as to facilitate containment of the envelope therein when sealed.
a flexible envelope of substantially impermeable material having an opening to allow for the desposition of said cladding material therein; fastening means to integrally connect the receptacle to a corresponding opening provided on said stripping means when it is secured to said body enabling communication between the envelope and stripping apparatus interior via said openings; envelope closure means provided on said envelope and disposed apart from said fastening means to close the envelope opening and substantially seal the contents of the envelope during attachment or detachment to said apparatus independently of said fastening means; and an outer cover to enclose said envelope so as to facilitate containment of the envelope therein when sealed.
2. A detachable receptacle as claimed at claim 1, wherein the peripheral edge of said outer cover is capable of being releasably and sealingly attached to the outerside of said stripping means so as to encompass said envelope during connection to said stripping means.
3. A detachable receptacle as claimed at claim 1 wherein the envelope closure means comprises envelope closure strips attached to opposing inner faces of the envelope adjacent said envelope opening but spaced from said fastening means whereby the strips are adapted to inter-lock with each other when pressed together.
4. A detachable receptacle as claimed at claim 1, wherein the envelope is provided with depending flap means to cover said envelope closure means from contacting cladding material during passage of the material through the envelope opening when the receptacle is attached to the stripping means.
5. A detachable receptacle as claimed at claim 1, wherein said fastening means comprises a clasp fastener part of which is disposed along the envelope opening and the other part of which is to be disposed along the corresponding stripping apparatus opening.
6. A detachable receptacle as claimed at claim 1, wherein said outer cover is fixedly attached to said envelope near the end thereof opposite said envelope opening.
7. A stripping apparatus for stripping fibrous cladding material from an elongate body, comprising:-a stripping means adapted to be detachably and sealingly secured at one end to the longitudinal portion of said body, the stripping means being formed of flexible material and having means whereby an operator can insert his hand and perform manipulations within the interior of the stripping means for work on said body whilst maintaining isolation between the interior of said stripping means and the operator's hands, and a stripping means opening at the other end through which stripped cladding material may pass for collection; and a detachable receptacle for collecting said cladding material stripped from the body comprising: a flexible envelope of substantially impermeable material having an opening to allow for the deposition of said cladding material therein; fastening means to integrally connect the receptacle to said stripping means opening enabling communication between the envelope and stripping apparatus interior via said openings; envelope closure means provided on said envelope and disposed apart from said fastening means to close the envelope opening and substantially seal the contents of the envelope during attachment or detachment to said apparatus independently of said fastening means; and an outer cover to enclose said envelope so as to facilitate containment of the envelope therein when sealed.
8. A stripping apparatus as claimed at claim 7 wherein the stripping means is provided with stripping closure means disposed apart from said fastening means to close the stripping means opening and substantially seal the same during attachment or detachment of said receptacle.
9. A stripping apparatus as claimed at claim 8 wherein the stripping closure means comprises stripping means closure strips attached to opposing inner faces of said stripping means but spaced from said fastening means, whereby the strips are adapted to interlock with each other when pressed together.
10. A stripping apparatus as claimed at claim 7, wherein the peripheral edge of said outer cover is capable of being releasably and sealingly attached to the outerside of said stripping means so as to encompass said envelope during connection to said stripping means.
11. A stripping apparatus as claimed at claim 7 wherein the envelope closure means comprises envelope closure strips attached to opposing inner faces of the envelope adjacent said envelope opening but spaced from said fastening means whereby the strips are adapted to inter-lock with each other when pressed together.
12. A stripping apparatus as claimed at claim 7, wherein the openings are normally biased open by the provision of a stiffening stay means formed within a said opening.
13. A stripping apparatus as claimed at claim 7 wherein the stripping means is provided with depending flap means to cover said closure means from contacting cladding material during passage of the material to the receptacle.
14. A stripping apparatus as claimed at claim 7, wherein said fastening means comprises a clasp fastener one part of which is disposed along the envelope opening and the other part of which is to be disposed along the corresponding stripping apparatus opening.
15. A stripping apparatus as claimed at claim 7, wherein said outer cover is fixedly attached to said envelope near the end thereof opposite said envelope opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000526469A CA1254738A (en) | 1986-12-30 | 1986-12-30 | Detachable receptacle and stripping apparatus for stripping lagging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000526469A CA1254738A (en) | 1986-12-30 | 1986-12-30 | Detachable receptacle and stripping apparatus for stripping lagging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1254738A true CA1254738A (en) | 1989-05-30 |
Family
ID=4134665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000526469A Expired CA1254738A (en) | 1986-12-30 | 1986-12-30 | Detachable receptacle and stripping apparatus for stripping lagging |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1254738A (en) |
-
1986
- 1986-12-30 CA CA000526469A patent/CA1254738A/en not_active Expired
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| Date | Code | Title | Description |
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| MKEX | Expiry |