US3228146A - Cleaning tool - Google Patents

Cleaning tool Download PDF

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Publication number
US3228146A
US3228146A US368804A US36880464A US3228146A US 3228146 A US3228146 A US 3228146A US 368804 A US368804 A US 368804A US 36880464 A US36880464 A US 36880464A US 3228146 A US3228146 A US 3228146A
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frame
main
cleaning
engagement
nozzle
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Expired - Lifetime
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US368804A
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Jr Walter E Rosengarten
Archibald T Flower
David L Buchanan
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Priority claimed from US192817A external-priority patent/US3178793A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks

Definitions

  • the present invention relates to devices for cleaning pipes and mains, particularly where limited access is provided, as through a small excavation.
  • a purpose of the invention is to provide means for cleaning a pipe and particularly a pipe joint which is inaccessible, and is located in a relatively small or narrow excavation.
  • a further purpose is to provide means for cleaning a pipe joint prior to attaching a mold for sealing the joint.
  • a further purpose is to permit cleaning of a .pipe joint by a person at a point remote from the main in which the joint is contained.
  • FIGURE 1 is an axial elevation of the cleaning device of the invention about to be inserted on a main which is shown in section.
  • FIGURE 2 is a section taken from the line 2-2 of FIGURE 1.
  • FIGURE 3 is an enlarged view taken from the line 33 of FIGURE 1.
  • FIGURE 4 is an enlarged partial sectional elevation of the frame and nozzle of the cleaning device of the invention.
  • FIGURE 5 is an axial elevation of the cleaning device of the invention applied to the top side of a main.
  • FIGURE 6 is an axial elevation of the cleaning device of the invention showing the nozzle at the underside of a main.
  • FIGURE 7 is a section taken on the line 7-7 of FIG- URE 5.
  • FIGURE 8 is a fragmentary longitudinal elevation showing the cleaning device of the invention being applied to a joint.
  • the present invention relates to mechanism permitting cleaning of a pipe for any purpose for which this is required, and particularly cleaning .a main which is inaccessible to the workmen.
  • the cleaning is accomplished by sand-blasting, grit-blasting, wheat-blasting, or refractory-blasting.
  • a handle 20 is pivotally connected at 21 to frame 22, having arcuate elements or jaws 23 and 24 suitably pivoted at 25.
  • a connecter element 26 supports elements 23 and 24 to pivot 25 and also supports pivot 27 to which handle 20 is attached at 21.
  • Handle 20 has a suitable U-shaped bend 28 at the end adjacent frame 22.
  • Rollers 30 are pivotally mounted on arcuate elements 23 and 24 which engage circumferentially on the pipe 116. As best seen in FIGURE 7, there are two rollers 30 on the outer end of element 23 and one roller near the pivot and one roller on the outer end of element 24, the rollers being disposed at approximately 120 intervals around the circumference.
  • a nut and bolt 31 retains helical compression spring 32 which biases the segments 23 and 24 together as best seen in FIGURE 4.
  • a nozzle 33 having orifice opening 34 is held to arcuate element 24 by extension 35 and retainer 36.
  • Retainer 36 is held against extension 35 by nuts and bolts 37 which are spring loaded by helical compression springs 38 to secure the nozzle 33 by engaging surface 40 of the nozzle.
  • a shoulder 41 and nut 42 threaded on nozzle 33 prevent longitudinal movement of the nozzle with respect to the .arcuate element 24.
  • the spring loaded yieldable retainer 36 allows the nozzle 33 to be rotated selectively.
  • a hose 43 is connected to the nozzle at 44 whereby sand or other abrasive can be brought to the nozzle and into contact with the pipe, the hose being connected at the outer end to any suitable air compressor and abrasive pickup mechanism as well known.
  • a hole is dug from the street or pavement surface to the level of the main.
  • This hole can be suitably of a cross-section of 4" x 18" at the surface and is then extended to any necessary dimension surrounding the pipe to introduce the cleaning mechanism.
  • the cleaning device 29 is lowered into the hole with the arcuate portions or jaws 23 and 24 disposed on either side of the top portion of the pipe 1165, as shown in FIGURE 1.
  • These arcuate sections 23 and 24 are normally biased toward a closed or radially inward position by helical spring 32 acting against nut and bolt 31.
  • the arcu'ate sections 23 and 24 are extended by forcing the rollers 311 against the pipe section in a downward direction so that the sections expand and then contract and snap in place about the pipe as shown in FIGURE 8.
  • the operator uses the handle 20 to maneuver the sections 23 and 24- carrying nozzle 33 with its opening 34.
  • the arcuate sections 23 and 24 are rotated around the pipe into positions shown in FIGURE 5 and FIGURE 6 as the blast is applied to the face of the bell as shown in FIGURE 2, or to to the spigot as shown in FIG- URE 5.
  • the shoulder 41 is provided with radial studs 49 so that the nozzle may be rotated with a suitable forked rod applied from above ground for adjustment of the direction of the blast. It is also relatively easy to remove the cleaning device from the hole to rotate the nozzle 33 to get a selected direction for the blast.
  • the cleaning device is rotated through the entire 360 circumference of the pipe by alternatively flopping the handle so that the U bend 28 is on the one side of the pipe during the 180 rotation as shown in FIGURE 5, and then on the other side of the pipe through the reremaining 180 of rotation as shown in FIGURE 6.
  • the handle rotates'about the pivot 27 during this flopping from one side to the other.
  • the cleaning mechanism is removed by pulling upwardly on the handle.
  • a frame comprising a plurality of radially-inwardly-biased pivotally-attached elements forming snap-engagement jaws [for detachably embracing a main and having roller means for providing circumferential rolling contact therewith, said frame having capacity for engagement with said main by movement radially theretoward, said jaws in disengaged position being open to a spacing somewhat less than the outside diameter of said main for facilitating such engagement, a nozzle rotatably carried by said frame for rotation on a generally tangential axis, and handle means attached to said frame for selectively positioning said nozzle around said main.
  • said handle means comprises a handle connected to said frame adapted for rotation on an axis parallel to a longitudinal axis of said frame and on an axis generally radial to said frame.
  • said handle means for positioning said frame comprises a handle extending above the excavation for manual operation thereabove, said handle being pivotally connected tosaid frame for rotation on an axis parallel to a longitudinal axis of said frame and on an axis generally radial to said frame, and said handle being provided with a U-bend adjacent to its connection with said frame and also adapted to force said frame into embracing engagement with said main.

Description

Jan. 11, 1966 w. E. ROSENGARTEN, JR., ETAL 3,228,145
CLEANING TOOL Original Filed May 7, 1962 wzkrzt/m if.
United States Patent M 3,228,146 CLEANING TOQL Walter E. Rosengarten, J12, 2895 Gradyville Road, Broorm all, Pa.; Archibald T. Flower, 2637 Church Road, Glenside, Pa.; and David L. Buchanan, 6333 Valley Green Road, Flourtown, Pa.
Originm application May 7, 1962, Ser. No. 192,817, new Patent No. 3,178,793, dated Apr. 20, 1965. Divided and this application May 20, 1964, Ser. No. 368,804
4 Claims. (Cl. 518) The present invention is a division of our copending application, Serial No. 192,817, filed May 7, 1962, for Process and Apparatus for Sealing Mains, now Patent No. 3,178,793, dated April 20, 1965.
The present invention relates to devices for cleaning pipes and mains, particularly where limited access is provided, as through a small excavation.
A purpose of the invention is to provide means for cleaning a pipe and particularly a pipe joint which is inaccessible, and is located in a relatively small or narrow excavation.
A further purpose is to provide means for cleaning a pipe joint prior to attaching a mold for sealing the joint.
A further purpose is to permit cleaning of a .pipe joint by a person at a point remote from the main in which the joint is contained.
Further purposes appear in the specification and in the claims.
In the drawings, we have chosen to illustrate one embodiment only of the cleaning device, choosing a form shown from the standpoints of convenience in illustration, satisfactory operation and clear demonstration of the principles involved.
FIGURE 1 is an axial elevation of the cleaning device of the invention about to be inserted on a main which is shown in section.
FIGURE 2 is a section taken from the line 2-2 of FIGURE 1.
FIGURE 3 is an enlarged view taken from the line 33 of FIGURE 1.
FIGURE 4 is an enlarged partial sectional elevation of the frame and nozzle of the cleaning device of the invention.
FIGURE 5 is an axial elevation of the cleaning device of the invention applied to the top side of a main.
FIGURE 6 is an axial elevation of the cleaning device of the invention showing the nozzle at the underside of a main.
FIGURE 7 is a section taken on the line 7-7 of FIG- URE 5.
FIGURE 8 is a fragmentary longitudinal elevation showing the cleaning device of the invention being applied to a joint.
Describing in illustration but not in limitation and referring to the drawings:
In the distribution of gas for domestic, commercial and industrial use, a network of mains is employed to carry the gas from central points to points of usage. These mains in many instances have bell and spigot joints which are typically packed by jute and then leaded or cemented at the outside. \Vhen these joints were originally installed, many of the mains would distribute carbureted water gas or coke oven gas or other manufactured gas which contained a substantial amount of moisture, tars and oils. These liquids had, over a period of time, saturated the packing materials to provide relatively leakfree joints.
In recent years, there has been a shift over to natural gas which is of a comparatively dry nature. Shrinkage of packing has occurred causing leakage.
We have proposed to close such leaks by making rela- 3,228,l45 Patented Jan. 11, 196$ tively narrow excavations, applying a mold around the bell and spigot joint, and sealing the joint by molding a sealing compound.
In order to obtain good adherence, it is important to clean the metal of the pipe adjacent to the joint. The present invention relates to mechanism permitting cleaning of a pipe for any purpose for which this is required, and particularly cleaning .a main which is inaccessible to the workmen.
In accordance with the invention, the cleaning is accomplished by sand-blasting, grit-blasting, wheat-blasting, or refractory-blasting.
A preferred blasting mechanism is shown in the drawings.
A handle 20 is pivotally connected at 21 to frame 22, having arcuate elements or jaws 23 and 24 suitably pivoted at 25. A connecter element 26 supports elements 23 and 24 to pivot 25 and also supports pivot 27 to which handle 20 is attached at 21. Handle 20 has a suitable U-shaped bend 28 at the end adjacent frame 22. Rollers 30 are pivotally mounted on arcuate elements 23 and 24 which engage circumferentially on the pipe 116. As best seen in FIGURE 7, there are two rollers 30 on the outer end of element 23 and one roller near the pivot and one roller on the outer end of element 24, the rollers being disposed at approximately 120 intervals around the circumference. A nut and bolt 31 retains helical compression spring 32 which biases the segments 23 and 24 together as best seen in FIGURE 4.
A nozzle 33 having orifice opening 34 is held to arcuate element 24 by extension 35 and retainer 36. Retainer 36 is held against extension 35 by nuts and bolts 37 which are spring loaded by helical compression springs 38 to secure the nozzle 33 by engaging surface 40 of the nozzle. A shoulder 41 and nut 42 threaded on nozzle 33 prevent longitudinal movement of the nozzle with respect to the .arcuate element 24. The spring loaded yieldable retainer 36 allows the nozzle 33 to be rotated selectively.
A hose 43 is connected to the nozzle at 44 whereby sand or other abrasive can be brought to the nozzle and into contact with the pipe, the hose being connected at the outer end to any suitable air compressor and abrasive pickup mechanism as well known.
In operation, a hole is dug from the street or pavement surface to the level of the main. This hole can be suitably of a cross-section of 4" x 18" at the surface and is then extended to any necessary dimension surrounding the pipe to introduce the cleaning mechanism. After the hole is dug and cleaned of loose earth, the cleaning device 29 is lowered into the hole with the arcuate portions or jaws 23 and 24 disposed on either side of the top portion of the pipe 1165, as shown in FIGURE 1. These arcuate sections 23 and 24 are normally biased toward a closed or radially inward position by helical spring 32 acting against nut and bolt 31. The arcu'ate sections 23 and 24 are extended by forcing the rollers 311 against the pipe section in a downward direction so that the sections expand and then contract and snap in place about the pipe as shown in FIGURE 8.
The operator uses the handle 20 to maneuver the sections 23 and 24- carrying nozzle 33 with its opening 34. The arcuate sections 23 and 24 are rotated around the pipe into positions shown in FIGURE 5 and FIGURE 6 as the blast is applied to the face of the bell as shown in FIGURE 2, or to to the spigot as shown in FIG- URE 5. The shoulder 41 is provided with radial studs 49 so that the nozzle may be rotated with a suitable forked rod applied from above ground for adjustment of the direction of the blast. It is also relatively easy to remove the cleaning device from the hole to rotate the nozzle 33 to get a selected direction for the blast. The cleaning device is rotated through the entire 360 circumference of the pipe by alternatively flopping the handle so that the U bend 28 is on the one side of the pipe during the 180 rotation as shown in FIGURE 5, and then on the other side of the pipe through the reremaining 180 of rotation as shown in FIGURE 6. The handle rotates'about the pivot 27 during this flopping from one side to the other.
After the bell 57 and spigot 53 have been sand-blasted, the cleaning mechanism is removed by pulling upwardly on the handle.
In view of our invention and disclosure, variations and modifications to meet individual whim or particular need will doubtless become evident to others skilled in the art, to obtain all or part of the benefits of our invention without copying the device shown, and we, therefore, claim all such insofar as they fall within the reasonable spirit and scope of our claims.
Having thus described our invention what we claim as new and desire to secure by Letters Patent is:
1. In a device for cleaning mains, a frame comprising a plurality of radially-inwardly-biased pivotally-attached elements forming snap-engagement jaws [for detachably embracing a main and having roller means for providing circumferential rolling contact therewith, said frame having capacity for engagement with said main by movement radially theretoward, said jaws in disengaged position being open to a spacing somewhat less than the outside diameter of said main for facilitating such engagement, a nozzle rotatably carried by said frame for rotation on a generally tangential axis, and handle means attached to said frame for selectively positioning said nozzle around said main.
2. The cleaning device of claim 1, wherein said handle means comprises a handle connected to said frame adapted for rotation on an axis parallel to a longitudinal axis of said frame and on an axis generally radial to said frame.
3. The cleaning device of claim 2, wherein adjacent to its connection to said frame said handle has a U-bend adapted to fit around the main such that said connection is capable of being maneuvered to the diametrically opposite side of the main.
4. The cleaning device of claim 1, adapted for use in cleaning an underground main having a portion exposed in a narrow excavation, wherein said handle means for positioning said frame comprises a handle extending above the excavation for manual operation thereabove, said handle being pivotally connected tosaid frame for rotation on an axis parallel to a longitudinal axis of said frame and on an axis generally radial to said frame, and said handle being provided with a U-bend adjacent to its connection with said frame and also adapted to force said frame into embracing engagement with said main.
References Cited by the Examiner UNITED STATES PATENTS 1,829,831 11/1931 Hiskey 118-307 2,516,222 7/ 1950 Lindmark 51320 2,603,920 7/1952 Wagstoflf.
2,914,891 12/1959 Nix 51-241 2,951,319 9/1960 Kornhaus 51-8 LESTER M. SWINGLE, Primary Examiner.

Claims (1)

1. IN A DEVICE FOR CLEANING MAINS, A FRAME COMPRISING A PLURALITY OF RADIALLY-INWARDLY-BIASED PIVOTALLY-ATTACHED ELEMENTS FORMING SNAP-ENGAGEMENT FJAWS FOR DETACHABLY EMBRACING A MAIN AND HAVING ROLLER MEANS FOR DETACHABLY CIRCUMFERENTIAL ROLLING CONTACT THEREWITH, SAID FRAME HAVING CAPACITY FOR ENGAGEMENT WITH SAID MAIN BY MOVEMENT RADIALLY THERETOWARD, SAID JAWS IN DISENGAGED POSITION BEING OPEN TO A SPACING SOMEWHAT LESS THAN THE OUTSIDE DIAMETER OF SAID MAIN FOR FACILITATING SUCH ENGAGEMENT, A NOZZLE ROTATABLY CARRIED BY SAID FRAME FOR ROTATION ON A GENERALLY TANGENTIAL AXIS, AND HANDLE MEANS ATTACHED TO
US368804A 1962-05-07 1964-05-20 Cleaning tool Expired - Lifetime US3228146A (en)

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Application Number Priority Date Filing Date Title
US192817A US3178793A (en) 1962-05-07 1962-05-07 Apparatus for sealing mains
US368804A US3228146A (en) 1962-05-07 1964-05-20 Cleaning tool

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4136527A (en) * 1976-01-23 1979-01-30 Mannesmann Aktiengesellschaft Cooling continuously cast ingots
US4625464A (en) * 1984-06-18 1986-12-02 Tetsushi Kubo Pipe processing device
US4880335A (en) * 1987-08-21 1989-11-14 Arabian American Oil Company Method and apparatus for removing concrete coating from pipe
EP0408883A1 (en) * 1989-07-17 1991-01-23 CRC-Evans Pipeline International, Inc. High pressure water jet cleaner and coating applicator
US5216849A (en) * 1991-05-29 1993-06-08 Navajo Refining Company Apparatus and method for sandblasting pipe
US5458683A (en) * 1989-07-17 1995-10-17 Crc-Evans Rehabilitation Systems, Inc. Device for surface cleaning, surface preparation and coating applications
US5520734A (en) * 1989-07-17 1996-05-28 Crc-Evans Rehabilitation Systems, Inc. High pressure water jet cleaner and coating applicator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1829831A (en) * 1928-06-26 1931-11-03 Mcrae Paint Products Inc Pipe painting apparatus
US2516222A (en) * 1945-01-26 1950-07-25 Johnson & Borsell Ab Graining of lithographic and other printing plates
US2603920A (en) * 1947-10-06 1952-07-22 Delapena & Son Ltd Honing device
US2914891A (en) * 1957-07-22 1959-12-01 Joe B Nix Apparatus for severing pipe
US2951319A (en) * 1957-07-01 1960-09-06 Floyd I Kornhaus Device for sand-blasting bores

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1829831A (en) * 1928-06-26 1931-11-03 Mcrae Paint Products Inc Pipe painting apparatus
US2516222A (en) * 1945-01-26 1950-07-25 Johnson & Borsell Ab Graining of lithographic and other printing plates
US2603920A (en) * 1947-10-06 1952-07-22 Delapena & Son Ltd Honing device
US2951319A (en) * 1957-07-01 1960-09-06 Floyd I Kornhaus Device for sand-blasting bores
US2914891A (en) * 1957-07-22 1959-12-01 Joe B Nix Apparatus for severing pipe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4136527A (en) * 1976-01-23 1979-01-30 Mannesmann Aktiengesellschaft Cooling continuously cast ingots
US4625464A (en) * 1984-06-18 1986-12-02 Tetsushi Kubo Pipe processing device
US4880335A (en) * 1987-08-21 1989-11-14 Arabian American Oil Company Method and apparatus for removing concrete coating from pipe
EP0408883A1 (en) * 1989-07-17 1991-01-23 CRC-Evans Pipeline International, Inc. High pressure water jet cleaner and coating applicator
US5458683A (en) * 1989-07-17 1995-10-17 Crc-Evans Rehabilitation Systems, Inc. Device for surface cleaning, surface preparation and coating applications
US5520734A (en) * 1989-07-17 1996-05-28 Crc-Evans Rehabilitation Systems, Inc. High pressure water jet cleaner and coating applicator
US5216849A (en) * 1991-05-29 1993-06-08 Navajo Refining Company Apparatus and method for sandblasting pipe

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