CA1188191A - Protective apparatus for facilitating the safe handling of substances dangerous to health - Google Patents
Protective apparatus for facilitating the safe handling of substances dangerous to healthInfo
- Publication number
- CA1188191A CA1188191A CA000414562A CA414562A CA1188191A CA 1188191 A CA1188191 A CA 1188191A CA 000414562 A CA000414562 A CA 000414562A CA 414562 A CA414562 A CA 414562A CA 1188191 A CA1188191 A CA 1188191A
- Authority
- CA
- Canada
- Prior art keywords
- bag
- pipe
- length
- flaps
- aperture
- 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
Abstract
Abstract "Protective apparatus for facilitating the safe handling of substances dangerous to health"
A protective apparatus suitable for removing asbestos lagging from pipes comprises a bag of plastics sheet material having a lower, sealed portion (20) and having an extended (34, 36) and transparent upper portion adapted to be detachably secured about a length of lagged (28) pipe (26), forming a seal (76, 78) with opposite ends of said length, said bag additionally having sleeve (38, 40) and glove or mitten (46,48) portions extending into the interior of the bag and through which an operator can insert his hands for work on the pipe (26), and having an aperture (54) through which water may be introduced into the bag.
A protective apparatus suitable for removing asbestos lagging from pipes comprises a bag of plastics sheet material having a lower, sealed portion (20) and having an extended (34, 36) and transparent upper portion adapted to be detachably secured about a length of lagged (28) pipe (26), forming a seal (76, 78) with opposite ends of said length, said bag additionally having sleeve (38, 40) and glove or mitten (46,48) portions extending into the interior of the bag and through which an operator can insert his hands for work on the pipe (26), and having an aperture (54) through which water may be introduced into the bag.
Description
3~
~ 2 ~
This invention relates to protective apparatus for facilitatlng the safe handling of substances dangerous to health or saf~ty, and it has a particularly important but not exclusive application in relation to the remov~l 5 of ~sbestos lagging from piping.
In rec~nt years a great deal of attention has been focussed on the long-term dangers involved in hand.Ling asbestos, and in many applications substitute materials are now being used. Asbestos lagging has, however, been 10 used for man~ years, for example on pipework, and when the lagging starts to disintegrate, whether as a result of phy3ical damage or age, it has to be stripped off.
This stripping work, which often produces a great deal of asbestos dust in a confined space, is considered a 15 hazard to health.
The present invention provides a protective apparatus comprising a bag having a lower, sealed portion and having an upper portion adapted ~o be detachably secured about a length of lagged pipe, forming a seal with opposite 20 ends of said length, said bag being made from plasties sheet material whiah is transparent in at least the regions thereof to be adjacent the pipe, and the bag having sleeve and glove or mitten portions extending into the interior of the bag and through which an operator can insert his hands 25for work on the pipe, and having an aperture through which water may be introduced into the bag.
~`
-- 3 ~
Preferably, the cuff between each sleeve portion and the respective glove or mitten portion is elasticated in order to provide a grip about the opera or's wrist~
Accordirlg to a preferred feature of the invention, 5 the bag has means for securing the front and back wall~
of the bag together at a location between the sleeve portions and the said lower portion of the bagO
According to another preferred feature of the invention, the bag is provided, at least in its lower portion, 10 with a gusset at each end, between the front and back walls, in order to increase the capacity of the bag for receiving stripped lagging.
According to a further preferred feature of the invention, the bag is provided, on the inside of the 15 back wall, and substantially opposite the sleeve portions, with a pocket or muff, in which tools may be placed while ~he bag is in use~ The pocket or muff preferably has a drainage hole so that it does not become filled with water and/or scrap lagging.
The invention will now be described in more detail, by way of example only, with reference to the accompanying drawings, in which~
Figure 1 shows a front view of a protective apparatus according to the inventiorl, and Figure 2 shows a cross-sectional view of the apparatus, on the line II-II of Figure 1~
Referring to the drawings, the protective apparatus 10 is made from transparent plastics sheet material and all its seams are welded. The apparatus is in the form of a bag with front and back walls 12, 14, joined together at their ends by gussets 16, 18. ~he lower 5 portion 20 of the bag acts as a receptacle for the stripped asbestos lagging. :~n its upper portion, the bag has front and back flaps 22, 24 which, in use, are placed about a length of a pipe 26 with asbestos lagging 28. The edges of the flaps 22, 24 meet when the 10 flaps are so placed ab~ t the plpe, and they have, formed integrally with them or welded to them, the components of a sliding clasp fastener 30, opera~ed by clasp 32, to form a seal be~ween the two flaps. The fastener 30 is conveniently disposed so as to be slightly forward 15 of the top of the pipe, as shown ( see Fig~ 2), when the flaps are secured togetherO The flaps 22, 24 have lateral extensions 34, 36 beyond the bag to cover adjoining lengths of the lagged pipe, thus forming a seal with opposite ends of the first-mentioned length.
20 The fastener 30, and the gussets 16, 18, extend along -the extensions 34, 36~
Two sleeve portions 38, 40 are secured to the front wall 12 of the bag, its upper portion, at apertures 42, 44, and extend into the interior of the bag. The two sleeve 25 portions 38, 40 terminate in respective mitten portions 46, 48, with respective elasticated cuffs 50, 52, ~o grip the operator ' s wristsO A further, smaller aperture 54 is provided in the front wall 12 between the two apertures -- 5 ~
42, 44, and a short, open ended sleeve 56, terminat.iny in an elasticated cuff 58, extends into the bag from the aperture 54, permitting a nozzle or the like for the injection of water to be inserted into the bag~
The two strips 60, 62 of a Velcxo (registered Trade Mark~ fastener are secured tc, the inner faces of the front and back walls 12, 14, respectively, below the apertures 42, 44, in order that the lower portion 20 of the bag can be sealed when the lagging 28 has been removed from 10 the pipe 26. The fastening strips 60, 62 are covered by respective plastics 1aps 64, 66, ~ecured, along their upper edges only, to the respective walls 12, 14. The flaps 64, 66 prevent stripped asbestos falling into the bag from striking and becoming attached to the Velcro 15 strips 60, 62,thus reducing their fastening efficiency, and also prevent the two strips from becoming fastened together unintentionally. When it is desired to use the Ve~n~ fastener, the two covering flaps 64, 66 are folded - upwards~ A muff 68, secured to the back wall 14 of the bag 20 at 70, 72, open at both ends, and provided with a drainage hole 74, serves to contain tools used by the operator during stripping o~ the lagging 28~
When the protective apparatus is to be used, with the clasp fas'cener 30 unfastened, the t~o flaps 22, 24 25 are placed around the length of lagged pipe 26 and are then fasten~ed together by sliding the clasp 32~ The flap extensions ~:34, 36 may be secured about ~he pipe by string or laces 76, 78 or othex convenient m~ans~ The operator then inserts his hands and arms into the.mitten and sleeve 3~.~
portions 46, 38 and 48, 40 and works on the lagying, usiny handtools as necessaryJ With the Velcro fastenex 60, 62 unfastened, the displaced lagging falls into the lower portion 28 of the bag, ~hich may if necessary be 5 supported on a table or other flat surface or in the angle of a V-shaped supporting surface. When the length of pipe has been stripped of lagging, or even during the actual stripping operation, the operator may insert a water spray through the aperture 54 and the sleeve 56 to clean lagging 10 remnants off the pipe and to damp down dust within the bagO
When the particular length of pipe has been strlpped, the two Velcro strips 60, 62 are pressed together to seal the lagging spoil in the lower portion 26 of the bag, the covering flaps 64, 66 having first been folded upward~ The shroud may then 15 be removed from the pipe by unfastening the clap fastener 30, and may be placed bodily within an outer bag fcr disposal in ~ccordance with existing regulations. The covering flaps 60, 62 tend to fall into overlapping relationship and assist in sealing the dust in the ~ottom of the bag.
20 When a long section of lagging is to be removed and the capacity of the bag permits, and when hangers or other suppo~ts for the pipe also permit, the bag may alternatively be moved along the pipe to the next length after the stxing or laces 76, 78 have been loosened~ The string or laces are 25 thenre-secured, the Velcro fastener is released, and work is continued on the next length of pipeO
Sectiorls of the lagged pipe not currently being worked on may be covered by plastics sleeves having a length wise extending sliding clasp fa.stener enabling them to be placed in position and removed.
The use of the protective apparatus according to the invention enables asbestos or other lagging to be 5 stripped from a pipe while containing the dust and waste material so that the operator i5 not subjected to the health hazard Qf asbestos or like dust.
~ 2 ~
This invention relates to protective apparatus for facilitatlng the safe handling of substances dangerous to health or saf~ty, and it has a particularly important but not exclusive application in relation to the remov~l 5 of ~sbestos lagging from piping.
In rec~nt years a great deal of attention has been focussed on the long-term dangers involved in hand.Ling asbestos, and in many applications substitute materials are now being used. Asbestos lagging has, however, been 10 used for man~ years, for example on pipework, and when the lagging starts to disintegrate, whether as a result of phy3ical damage or age, it has to be stripped off.
This stripping work, which often produces a great deal of asbestos dust in a confined space, is considered a 15 hazard to health.
The present invention provides a protective apparatus comprising a bag having a lower, sealed portion and having an upper portion adapted ~o be detachably secured about a length of lagged pipe, forming a seal with opposite 20 ends of said length, said bag being made from plasties sheet material whiah is transparent in at least the regions thereof to be adjacent the pipe, and the bag having sleeve and glove or mitten portions extending into the interior of the bag and through which an operator can insert his hands 25for work on the pipe, and having an aperture through which water may be introduced into the bag.
~`
-- 3 ~
Preferably, the cuff between each sleeve portion and the respective glove or mitten portion is elasticated in order to provide a grip about the opera or's wrist~
Accordirlg to a preferred feature of the invention, 5 the bag has means for securing the front and back wall~
of the bag together at a location between the sleeve portions and the said lower portion of the bagO
According to another preferred feature of the invention, the bag is provided, at least in its lower portion, 10 with a gusset at each end, between the front and back walls, in order to increase the capacity of the bag for receiving stripped lagging.
According to a further preferred feature of the invention, the bag is provided, on the inside of the 15 back wall, and substantially opposite the sleeve portions, with a pocket or muff, in which tools may be placed while ~he bag is in use~ The pocket or muff preferably has a drainage hole so that it does not become filled with water and/or scrap lagging.
The invention will now be described in more detail, by way of example only, with reference to the accompanying drawings, in which~
Figure 1 shows a front view of a protective apparatus according to the inventiorl, and Figure 2 shows a cross-sectional view of the apparatus, on the line II-II of Figure 1~
Referring to the drawings, the protective apparatus 10 is made from transparent plastics sheet material and all its seams are welded. The apparatus is in the form of a bag with front and back walls 12, 14, joined together at their ends by gussets 16, 18. ~he lower 5 portion 20 of the bag acts as a receptacle for the stripped asbestos lagging. :~n its upper portion, the bag has front and back flaps 22, 24 which, in use, are placed about a length of a pipe 26 with asbestos lagging 28. The edges of the flaps 22, 24 meet when the 10 flaps are so placed ab~ t the plpe, and they have, formed integrally with them or welded to them, the components of a sliding clasp fastener 30, opera~ed by clasp 32, to form a seal be~ween the two flaps. The fastener 30 is conveniently disposed so as to be slightly forward 15 of the top of the pipe, as shown ( see Fig~ 2), when the flaps are secured togetherO The flaps 22, 24 have lateral extensions 34, 36 beyond the bag to cover adjoining lengths of the lagged pipe, thus forming a seal with opposite ends of the first-mentioned length.
20 The fastener 30, and the gussets 16, 18, extend along -the extensions 34, 36~
Two sleeve portions 38, 40 are secured to the front wall 12 of the bag, its upper portion, at apertures 42, 44, and extend into the interior of the bag. The two sleeve 25 portions 38, 40 terminate in respective mitten portions 46, 48, with respective elasticated cuffs 50, 52, ~o grip the operator ' s wristsO A further, smaller aperture 54 is provided in the front wall 12 between the two apertures -- 5 ~
42, 44, and a short, open ended sleeve 56, terminat.iny in an elasticated cuff 58, extends into the bag from the aperture 54, permitting a nozzle or the like for the injection of water to be inserted into the bag~
The two strips 60, 62 of a Velcxo (registered Trade Mark~ fastener are secured tc, the inner faces of the front and back walls 12, 14, respectively, below the apertures 42, 44, in order that the lower portion 20 of the bag can be sealed when the lagging 28 has been removed from 10 the pipe 26. The fastening strips 60, 62 are covered by respective plastics 1aps 64, 66, ~ecured, along their upper edges only, to the respective walls 12, 14. The flaps 64, 66 prevent stripped asbestos falling into the bag from striking and becoming attached to the Velcro 15 strips 60, 62,thus reducing their fastening efficiency, and also prevent the two strips from becoming fastened together unintentionally. When it is desired to use the Ve~n~ fastener, the two covering flaps 64, 66 are folded - upwards~ A muff 68, secured to the back wall 14 of the bag 20 at 70, 72, open at both ends, and provided with a drainage hole 74, serves to contain tools used by the operator during stripping o~ the lagging 28~
When the protective apparatus is to be used, with the clasp fas'cener 30 unfastened, the t~o flaps 22, 24 25 are placed around the length of lagged pipe 26 and are then fasten~ed together by sliding the clasp 32~ The flap extensions ~:34, 36 may be secured about ~he pipe by string or laces 76, 78 or othex convenient m~ans~ The operator then inserts his hands and arms into the.mitten and sleeve 3~.~
portions 46, 38 and 48, 40 and works on the lagying, usiny handtools as necessaryJ With the Velcro fastenex 60, 62 unfastened, the displaced lagging falls into the lower portion 28 of the bag, ~hich may if necessary be 5 supported on a table or other flat surface or in the angle of a V-shaped supporting surface. When the length of pipe has been stripped of lagging, or even during the actual stripping operation, the operator may insert a water spray through the aperture 54 and the sleeve 56 to clean lagging 10 remnants off the pipe and to damp down dust within the bagO
When the particular length of pipe has been strlpped, the two Velcro strips 60, 62 are pressed together to seal the lagging spoil in the lower portion 26 of the bag, the covering flaps 64, 66 having first been folded upward~ The shroud may then 15 be removed from the pipe by unfastening the clap fastener 30, and may be placed bodily within an outer bag fcr disposal in ~ccordance with existing regulations. The covering flaps 60, 62 tend to fall into overlapping relationship and assist in sealing the dust in the ~ottom of the bag.
20 When a long section of lagging is to be removed and the capacity of the bag permits, and when hangers or other suppo~ts for the pipe also permit, the bag may alternatively be moved along the pipe to the next length after the stxing or laces 76, 78 have been loosened~ The string or laces are 25 thenre-secured, the Velcro fastener is released, and work is continued on the next length of pipeO
Sectiorls of the lagged pipe not currently being worked on may be covered by plastics sleeves having a length wise extending sliding clasp fa.stener enabling them to be placed in position and removed.
The use of the protective apparatus according to the invention enables asbestos or other lagging to be 5 stripped from a pipe while containing the dust and waste material so that the operator i5 not subjected to the health hazard Qf asbestos or like dust.
Claims (10)
1. A protective apparatus comprising a bag having a lower, sealed portion and having an upper portion adapted to be detachably secured about a length of lagged pipe, forming a seal with opposite ends of said length, said bag being made from plastics sheet material which is transparent in at least the regions thereof to be adjacent the pipe, and the bag having sleeve and glove or mitten portions extending into the interior of the bag and through which an operator can insert his hands for work on the pipe, and having an aperture through which water may be introduced into the bag.
2. An apparatus as claimed in claim 1, wherein the upper portion of the bag comprises two flaps which can be placed about the length of pipe from opposite sides thereof, the flaps meeting each other when so placed about the pipe and having respectively attached to their meeting edges the components of a fastener for securing them sealingly together about the pipe.
3. An apparatus as claimed in claim 2, wherein the fastener is a sliding clasp fastener.
4. An apparatus as claimed in claim 2, wherein the flaps have lateral extensions adapted to be releasably sealingly fastened about the respective ends of said length of pipe.
5. An apparatus as claimed in claim 2, wherein the bag has means for securing the front and back walls of the bag together at a location between the upper and lower portions of the bag.
6. An apparatus as claimed in claim 5, wherein the said securing means comprises respective fastening strips attached to the inner faces of the walls of the bag, which fastening strips interlock with each other when pressed together.
7. An apparatus as claimed in claim 6, wherein the said fastening strips are protected by respective flaps covering the strips from their margins nearer said other end of the bag, the flaps being displaceable to allow the strips to be pressed together.
8. An apparatus as claimed in claim 1, wherein an open-ended sleeve extends into the bag from the said aperture for the introduction of water.
9. An apparatus as claimed in claim 1, wherein the end of the said sleeve remote from the said aperture is provided with an elasticated cuff.
10. A method of stripping lagging from a length of pipe using a protective apparatus comprising a bag having a lower, sealed portion and having an upper portion adapted to be detachably secured about a length of lagged pipe, forming a seal with opposite ends of said length, said bag being made from plastics sheet material which is transparent in at least the regions thereof to be adjacent the pipe, and the bag having sleeve and glove or mitten portions extending into the interior of the bag and through which an operator can insert his hands for work on the pipe, and having an aperture through which water may be introduced into the bag.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB82.23095 | 1982-08-11 | ||
| GB8223095 | 1982-08-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1188191A true CA1188191A (en) | 1985-06-04 |
Family
ID=10532234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000414562A Expired CA1188191A (en) | 1982-08-11 | 1982-11-01 | Protective apparatus for facilitating the safe handling of substances dangerous to health |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1188191A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986005431A1 (en) * | 1985-03-13 | 1986-09-25 | William James Hamlet | A detachable receptacle and stripping apparatus for stripping lagging |
| AU576781B2 (en) * | 1984-09-10 | 1988-09-08 | William Francis Atkinson | Protector for handling health hazardous materials |
| AU580047B2 (en) * | 1984-04-18 | 1988-12-22 | Asbebag Ltd. | Protective device for facilitating the safe handling of substances dangerous to health |
| US4812700A (en) * | 1983-10-20 | 1989-03-14 | Gpac, Inc. | Portable containment device for treatment of hazardous materials |
| US4842347A (en) * | 1988-05-03 | 1989-06-27 | Jacobson Earl Bruce | Glove box for removal of hazardous waste from pipes |
| WO1989008511A1 (en) * | 1988-03-15 | 1989-09-21 | Johnny Pettersson | Improvements to a decontamination bag |
| US4872252A (en) * | 1988-12-02 | 1989-10-10 | Grayling Industries, Inc. | Method of removing hazardous material |
| US4883329A (en) * | 1988-10-14 | 1989-11-28 | Abatement Technologies, Inc. | Asbestos containment bag with slide fastener closure |
| US4912358A (en) * | 1988-11-01 | 1990-03-27 | Vitta Trust, C/O Michael F. Vitta, Trustee | Portable containment device for treatment of hazardous materials |
| US4960143A (en) * | 1988-02-12 | 1990-10-02 | Aerospace America, Inc. | Containment apparatus |
| US5520449A (en) * | 1995-03-24 | 1996-05-28 | Klak; Joseph V. | Asbestos glove bag |
| US5553933A (en) * | 1994-08-19 | 1996-09-10 | Grayling Industries, Inc. | Safety glove bag and method of making same |
-
1982
- 1982-11-01 CA CA000414562A patent/CA1188191A/en not_active Expired
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4812700A (en) * | 1983-10-20 | 1989-03-14 | Gpac, Inc. | Portable containment device for treatment of hazardous materials |
| AU580047B2 (en) * | 1984-04-18 | 1988-12-22 | Asbebag Ltd. | Protective device for facilitating the safe handling of substances dangerous to health |
| AU576781B2 (en) * | 1984-09-10 | 1988-09-08 | William Francis Atkinson | Protector for handling health hazardous materials |
| WO1986005431A1 (en) * | 1985-03-13 | 1986-09-25 | William James Hamlet | A detachable receptacle and stripping apparatus for stripping lagging |
| US4746175A (en) * | 1985-03-13 | 1988-05-24 | Hamlet William J | Detachable receptacle and stripping apparatus for stripping lagging |
| US4960143A (en) * | 1988-02-12 | 1990-10-02 | Aerospace America, Inc. | Containment apparatus |
| WO1989008511A1 (en) * | 1988-03-15 | 1989-09-21 | Johnny Pettersson | Improvements to a decontamination bag |
| WO1989010733A1 (en) * | 1988-05-03 | 1989-11-16 | Jacobson Earl Bruce | Improved glove box for removal of hazardous waste from pipes |
| US4842347A (en) * | 1988-05-03 | 1989-06-27 | Jacobson Earl Bruce | Glove box for removal of hazardous waste from pipes |
| US4883329A (en) * | 1988-10-14 | 1989-11-28 | Abatement Technologies, Inc. | Asbestos containment bag with slide fastener closure |
| US4912358A (en) * | 1988-11-01 | 1990-03-27 | Vitta Trust, C/O Michael F. Vitta, Trustee | Portable containment device for treatment of hazardous materials |
| US4872252A (en) * | 1988-12-02 | 1989-10-10 | Grayling Industries, Inc. | Method of removing hazardous material |
| US5553933A (en) * | 1994-08-19 | 1996-09-10 | Grayling Industries, Inc. | Safety glove bag and method of making same |
| US5520449A (en) * | 1995-03-24 | 1996-05-28 | Klak; Joseph V. | Asbestos glove bag |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |