US3896627A - Anchoring - Google Patents
Anchoring Download PDFInfo
- Publication number
- US3896627A US3896627A US408688A US40868873A US3896627A US 3896627 A US3896627 A US 3896627A US 408688 A US408688 A US 408688A US 40868873 A US40868873 A US 40868873A US 3896627 A US3896627 A US 3896627A
- Authority
- US
- United States
- Prior art keywords
- sleeve
- bolt
- diameter portion
- bore
- thread engaging
- 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 - Lifetime
Links
- 238000004873 anchoring Methods 0.000 title description 3
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims abstract description 5
- 229920003023 plastic Polymers 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 239000004705 High-molecular-weight polyethylene Substances 0.000 description 1
- 235000019687 Lamb Nutrition 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 241001575928 Siler Species 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/14—Non-metallic plugs or sleeves; Use of liquid, loose solid or kneadable material therefor
- F16B13/141—Fixing plugs in holes by the use of settable material
Definitions
- the container 2 holds a self-setting fixing composition.
- the composition comprises the interactive ingredients of a self-setting polyester or epoxy resin mix. where required the interactive ingredients being kept separate from one another while the container remains intact.
- the material of which the container is made will depend on the nature of the composition; suitable materials for use with a polyester resin mix are unplasticized polyvinyl chloride and acrylonitrile butadiene styrene.
Abstract
A plastics sleeve for use in holding a bolt in a borehole has a bore having two diameter portions, one wider than the other so that an internal shoulder is formed. A metal thread engaging means, such as a helically coiled spring wire, is inserted in the wider diameter portion to abut the shoulder. The threaded end of the bolt is passed through the narrower diameter portion and rotated to engage the metal thread engaging means. A cap, preferably holding a container of a self-setting mix, is fitted in the mouth of the wider diameter portion and the assembly then inserted in a borehole to rupture the container to release the composition to anchor the sleeve in the hole.
Description
United States Patent Brown 1 July 29, 1975 1 1 ANCHORING 3,589,423 6/1971 Metz 85/32 cs Inventor: J Vincent Brown, n ugh, 3,702,060 11/1972 Cumming 61/45 B England FOREIGN PATENTS OR APPLICATIONS [73] Assignee. Fosmc Switzerland 1,268,624 6/1961 France 85/63 [22] Filed: Primary Examiner-Marion Parsons, Jr.
[2]] Appl. No.: 408,688
Foreign Application Priority Data Oct. 31, 1973 United Kingdom 50176/73 [52] U.S. Cl 61/45 B; 52/698; 85/61; 85/63 [51] Int. Cl E2ld 20/02 [58] Field of Search 85/35, 32 CS, 61, 62, 63; 61/45 B; 52/698 [56] References Cited UNlTED STATES PATENTS 2,022,946 12/1935 Staempfli 85/32 CS 2,570,003 10/1951 Palmer 85/87 2,829,502 4/1958 Dempsey 85/63 3,108,404 10/1963 Lamb 85/63 3,357,730 12/1967 Siler 85/61 Attorney, Agent, or Firm-Caesar, Rivise, Bernstein & Cohen [57] ABSTRACT A plastics sleeve for use in holding a bolt in a borehole has a bore having two diameter portions, one wider than the other so that an internal shoulder is formed. A metal thread engaging means, such as a helically coiled spring wire, is inserted in the wider diameter portion to abut the shoulder. The threaded end of the bolt is passed through the narrower diameter portion and rotated to engage the metal thread engaging means. A cap, preferably holding a container of a selfsetting mix, is fitted in the mouth of the wider diameter portion and the assembly then inserted in a borehole to rupture the container to release the composition to anchor the sleeve in the hole.
6 Claims, 3 Drawing Figures PATENTEU JUL29|975 SHEET ANCHORING' The invention relates to the fixing of a bolt or the like in a bore hole in a substrate, for example. the fixing of an anchor bolt in a hole in a mine gallery roof.
A device for the purpose specified, according to the invention, comprises a generally tubular sleeve. the bore of the sleeve comprising a major diameter portion and a minor diameter portion which, at their union, define a shoulder in the bore intermediate the ends of the sleeve, thread engaging means being located in the major diameter portion in abutment with the shoulder for engagement with the threaded end portion of a bolt received in the sleeve through the minor diameter portion, and a cap closing the mouth of the major diameter portion.
A preferred embodiment of the invention is described with reference to the accompanying drawings in which:
FIG. 1 is a sectional view of the device, a bolt to be anchored and a container holding a self-setting composition;
FIG. 2 is an exploded perspective view of the parts shown in FIG. 1; and
FIG. 3 is a sectional view showing a bolt secured in a hole by the device of FIG. 1.
The assembly of FIGS. 1 and 2 includes a tubular sleeve 1 molded of plastics material such as a polyacetal. DELRlN or a high molecular weight polyethylene. The exterior of the sleeve 1 has longitudinally spaced apart annular ridges 3. A metal collet 4 having peripherally projecting spokes 5 is located in a groove between adjacent ridges at one end, the lower as shown. At the upper end, the mouth of the sleeve is closed by a cap 6 having a lower part 7 which fits closely in the bore 8 of the sleeve 1. The cap 6 has a peripheral wall 9 providing a recess which receives and locates one end of a frangible container 2.
The container 2 holds a self-setting fixing composition. Preferably the composition comprises the interactive ingredients ofa self-setting polyester or epoxy resin mix. where required the interactive ingredients being kept separate from one another while the container remains intact. The material of which the container is made will depend on the nature of the composition; suitable materials for use with a polyester resin mix are unplasticized polyvinyl chloride and acrylonitrile butadiene styrene.
The bore 8 of the sleeve 1 comprises a lower portion 8-a of a relatively minor diameter and an upper portion 8-h of a relatively major diameter so that an annular shoulder 8-(' is formed in the interior wall of the sleeve intermediate its ends. The minor diameter portion 8-a may be about 5 mm less than the major diameter portion 8-b. A tubular metal screw thread forming element 10 fits within the larger diameter portion 8-h of the bore and has one end abutting the shoulder 8-('. This element comprises a length of spring wire coiled into a helix and having screw threads on its interior and exterior surfaces. Such elements are available commercially under the name HELlCOlL." The element 10 is inserted into the sleeve before the cap 6 is placed in position and rotated into engagement with a screw thread formed in the wall of the major diameter portion S-b. After the element 10 is received in the sleeve. a shear pin I1 is passed across the bore through the sleeve. The minor diameter portion 8-a of the sleeve is 'dimensionedsuch that a bolt 12 having a threaded end portion 13 may pass throughthe minor diameter portion to-engagethe element 10:
Toanc hor the bolt 12 in, for example, the roof of a mine gallery, a bore hole 14 (no.3) is made in the roof 15. For a bolt about l6.25"mm in diameter, the hole 14 is preferably about 36 mm in diameter. The bolt is inserted into the open end of the sleeve 1 and threaded into the element 10 until it engages the pin 11, the resistance then encountered indicating that the bolt is fully engaged with the element 10. The container 2 is placed in position on the cap 6 and the assembly is then pushed upward into the bore hole with container 2 leading. The assembly is hammered home to crush the container 2 so releasing its contents and inter-mixing them to form the self-setting mix and also urging the spokes 5 of the collet 4 into engagement with the wall of the bore hole 14. the self-setting mix 16 flows down the annular clearance between the sleeve 1 and the bore hole wall until it reaches the collet 4 which limits egress of the mix from the bore hole. The cap 6 prevents the mix from entering the bore 8 of the sleeve 1. The composition is preferably of a viscosity such that it flows to reach the collet 4 in seconds which means that the operator can then let go of the bolt 12 quickly and move on to the next hole. The bolt may be threaded fully home by applying a torque sufficient to shear the pin 11 and the bolt will then travel home a length dependent on that of the wider diameter portion 8-b generally about 4 or 5 cm.
The pull-out strength of the anchorage formed is enhanced by the shear strength of the engagement of the sleeve 1 with the element 10 and also the compressive strength of the material of the sleeve which lies outwardly of the shoulder 8-c. Because the bolt 12 and the screw thread 10 with which it engages are protected from contact with the set composition, the bolt can be withdrawn whenever desired.
Without further elaboration, the foregoing will so fully illustrate my invention, that others may, by applying current or future knowledge, readily adapt the same for use under various conditions of service.
What is claimed as the invention is:
l. A device for use in the fixing of a bolt or the like in a borehole, comprising a generally tubular sleeve including a bore and formed of a compressible plastic material, said sleeve being adapted to be anchored in the borehole by means of a self-setting composition released into location between the sleeve and the borehole wall, the bore of the sleeve comprising a major portion of a first predetermined diameter and a minor portion of a second, smaller, predetermined diameter, said bore portions forming a shoulder at their junction and intermediate the ends of the sleeve, said minor diameter portion including an open end to receive a threaded end portion of a bolt so that said bolt portion can extend therethrough, thread engaging means located in the major diameter portion and in abutment with the shoulder for engagement with the threaded end portion of the bolt extending through the minor diameter portion, and cap means sealing the major diameter portion of the bore to prevent the ingress of the self-setting mix therein upon its release to thereby preclude contact between said composition and the threaded end of the bolt extending into said major diameter portion.
5. A device according to claim 4 in which the means comprises a frangible pin extending across the bore of the sleeve between the cap of the major diameter portion and the adjacent end of the thread engaging means.
6, A device according to claim 1 in which the cap means is adapted to hold a frangible container of said self-setting composition.
Claims (6)
1. A device for use in the fixing of a bolt or the like in a borehole, comprising a generally tubular sleeve including a bore and formed of a compressible plastic material, said sleeve being adapted to be anchored in the borehole by means of a self-setting composition released into location between the sleeve and the borehole wall, the bore of the sleeve comprising a major portion of a first predetermined diameter and a minor portion of a second, smaller, predetermined diameter, said bore portions forming a shoulder at their junction and intermediate the ends of the sleeve, said minor diameter portion including an open end to receive a threaded end portion of a bolt so that said bolt portion can extend therethrough, thread engaging means located in the major diameter portion and in abutment with the shoulder for engagement with the threaded end portion of the bolt extending through the minor diameter portion, and cap means sealing the major diameter portion of the bore to prevent the ingress of the self-setting mix therein upon its releAse to thereby preclude contact between said composition and the threaded end of the bolt extending into said major diameter portion.
2. A device according to claim 1 in which the exterior surface of the thread engaging means is in threaded engagement with the sleeve.
3. A device according to claim 1 in which the thread engaging means comprises a helically coiled metal wire.
4. A device according to claim 1, including means initially to limit reception of the bolt in the sleeve when a light torque is applied to the bolt and which will yield when the torque is increased.
5. A device according to claim 4 in which the means comprises a frangible pin extending across the bore of the sleeve between the cap of the major diameter portion and the adjacent end of the thread engaging means.
6. A device according to claim 1 in which the cap means is adapted to hold a frangible container of said self-setting composition.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB50176/73A GB1481599A (en) | 1974-10-18 | 1974-10-18 | Production of articles moulds or formers |
Publications (1)
Publication Number | Publication Date |
---|---|
US3896627A true US3896627A (en) | 1975-07-29 |
Family
ID=10454950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US408688A Expired - Lifetime US3896627A (en) | 1974-10-18 | 1973-10-23 | Anchoring |
Country Status (2)
Country | Link |
---|---|
US (1) | US3896627A (en) |
GB (1) | GB1481599A (en) |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4023373A (en) * | 1976-06-14 | 1977-05-17 | Union Forge, Inc. | Anchor bolt assembly and utilization |
US4051683A (en) * | 1976-06-28 | 1977-10-04 | Jennmar Corporation | Method and apparatus for supporting a mine roof |
US4129007A (en) * | 1977-08-04 | 1978-12-12 | Celtite, Inc. | Anchor device for resin anchor system |
US4147458A (en) * | 1977-06-20 | 1979-04-03 | Elders G W | Roof pin |
US4160614A (en) * | 1978-03-23 | 1979-07-10 | Jennmar Corporation | Expansion shell assembly and method for combining resin bonding and mechanical anchoring of a bolt in a rock formation |
US4305687A (en) * | 1979-01-26 | 1981-12-15 | Jack Parker | Anchoring system for rock bolts |
US4347020A (en) * | 1980-01-02 | 1982-08-31 | Birmingham Bolt Company | Mine roof bolt assembly |
US4349299A (en) * | 1980-02-26 | 1982-09-14 | Stephen F. Koval | Roof bolt tension head and method of use |
US4413930A (en) * | 1980-11-21 | 1983-11-08 | Jennmar Corporation | Method and apparatus for combining resin bonding and mechanical anchoring of a bolt in a rock formation |
US4516883A (en) * | 1983-04-01 | 1985-05-14 | Die-Matic Corporation | Mine roof bolt mounting assembly |
US4655645A (en) * | 1984-12-31 | 1987-04-07 | H&S Machine & Supply Co., Inc. | Method and apparatus for anchoring roof bolts |
US4679966A (en) * | 1985-12-13 | 1987-07-14 | Jennmar Corporation | Roof bolt apparatus with expansion shell and coupling |
US4776143A (en) * | 1986-06-16 | 1988-10-11 | Ferdinand Pointner | Anchor |
US5033909A (en) * | 1990-04-27 | 1991-07-23 | Ingersoll-Rand Company | Coupling for anchor rod and sleeve |
US5052333A (en) * | 1986-03-03 | 1991-10-01 | Jacob Woudsma | Plug |
US5073064A (en) * | 1990-04-27 | 1991-12-17 | Birmingham Bolt Company | Method and apparatus for retorquing an installed mine roof bolt |
US5219248A (en) * | 1992-05-14 | 1993-06-15 | The Eastern Company | Mine roof expansion anchor with improved bore hole engagement means and method of installation thereof |
US5344257A (en) * | 1992-12-02 | 1994-09-06 | The Eastern Company | Mine roof expansion anchor and bail element |
EP0687821A1 (en) * | 1994-06-13 | 1995-12-20 | Illinois Tool Works Inc. | Construction fastener assembly |
EP0770785A1 (en) * | 1995-10-26 | 1997-05-02 | Illinois Tool Works Inc. | Anchor dowell |
US5653078A (en) * | 1995-09-29 | 1997-08-05 | Erico International Corporation | Variable embedment anchor and method |
US5785463A (en) * | 1996-01-11 | 1998-07-28 | Jennmar Corporation | Combination cable bolt system |
KR100383453B1 (en) * | 2000-07-19 | 2003-05-14 | 주식회사 삼보기술단 | Fixture for Rock Bolt |
US20040165958A1 (en) * | 2001-04-20 | 2004-08-26 | Mclaren Matthew David | Inserter and cap |
KR100489937B1 (en) * | 2002-03-08 | 2005-05-17 | 김유신 | Anchor for Engineering works |
US20090067932A1 (en) * | 2005-12-02 | 2009-03-12 | Fox William G | Re-tensionable cable bolt apparatus and related method |
CN102165140A (en) * | 2008-09-25 | 2011-08-24 | 犀牛技术公司 | Re-tensionable cable bolt apparatus and related method |
US8550751B2 (en) | 2009-08-03 | 2013-10-08 | Dsi Underground Systems, Inc. | Non-tensionable cable bolt apparatus and related method |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2022946A (en) * | 1935-01-10 | 1935-12-03 | Staempfli Joseph | Bolt lock |
US2570003A (en) * | 1950-04-06 | 1951-10-02 | Palmer Welloct Tool Corp | Expansible sleeve anchoring device |
US2829502A (en) * | 1953-12-17 | 1958-04-08 | Joseph B Dempsey | Mine roof bolt installation |
US3108404A (en) * | 1960-06-07 | 1963-10-29 | Lyle N Lamb | Anchor device for hollow masonry type walls |
US3357730A (en) * | 1961-10-27 | 1967-12-12 | Joseph T Siler | Methods and means for parts assembly |
US3589423A (en) * | 1969-06-10 | 1971-06-29 | Norco Inc | Locking-type machine nut |
US3702060A (en) * | 1971-02-25 | 1972-11-07 | James Deans Cumming | Resin-bonded expansion shell |
-
1973
- 1973-10-23 US US408688A patent/US3896627A/en not_active Expired - Lifetime
-
1974
- 1974-10-18 GB GB50176/73A patent/GB1481599A/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2022946A (en) * | 1935-01-10 | 1935-12-03 | Staempfli Joseph | Bolt lock |
US2570003A (en) * | 1950-04-06 | 1951-10-02 | Palmer Welloct Tool Corp | Expansible sleeve anchoring device |
US2829502A (en) * | 1953-12-17 | 1958-04-08 | Joseph B Dempsey | Mine roof bolt installation |
US3108404A (en) * | 1960-06-07 | 1963-10-29 | Lyle N Lamb | Anchor device for hollow masonry type walls |
US3357730A (en) * | 1961-10-27 | 1967-12-12 | Joseph T Siler | Methods and means for parts assembly |
US3589423A (en) * | 1969-06-10 | 1971-06-29 | Norco Inc | Locking-type machine nut |
US3702060A (en) * | 1971-02-25 | 1972-11-07 | James Deans Cumming | Resin-bonded expansion shell |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4023373A (en) * | 1976-06-14 | 1977-05-17 | Union Forge, Inc. | Anchor bolt assembly and utilization |
US4051683A (en) * | 1976-06-28 | 1977-10-04 | Jennmar Corporation | Method and apparatus for supporting a mine roof |
US4147458A (en) * | 1977-06-20 | 1979-04-03 | Elders G W | Roof pin |
US4129007A (en) * | 1977-08-04 | 1978-12-12 | Celtite, Inc. | Anchor device for resin anchor system |
US4160614A (en) * | 1978-03-23 | 1979-07-10 | Jennmar Corporation | Expansion shell assembly and method for combining resin bonding and mechanical anchoring of a bolt in a rock formation |
US4305687A (en) * | 1979-01-26 | 1981-12-15 | Jack Parker | Anchoring system for rock bolts |
US4347020A (en) * | 1980-01-02 | 1982-08-31 | Birmingham Bolt Company | Mine roof bolt assembly |
US4349299A (en) * | 1980-02-26 | 1982-09-14 | Stephen F. Koval | Roof bolt tension head and method of use |
US4413930A (en) * | 1980-11-21 | 1983-11-08 | Jennmar Corporation | Method and apparatus for combining resin bonding and mechanical anchoring of a bolt in a rock formation |
US4516883A (en) * | 1983-04-01 | 1985-05-14 | Die-Matic Corporation | Mine roof bolt mounting assembly |
US4655645A (en) * | 1984-12-31 | 1987-04-07 | H&S Machine & Supply Co., Inc. | Method and apparatus for anchoring roof bolts |
US4679966A (en) * | 1985-12-13 | 1987-07-14 | Jennmar Corporation | Roof bolt apparatus with expansion shell and coupling |
US5052333A (en) * | 1986-03-03 | 1991-10-01 | Jacob Woudsma | Plug |
US4776143A (en) * | 1986-06-16 | 1988-10-11 | Ferdinand Pointner | Anchor |
US5033909A (en) * | 1990-04-27 | 1991-07-23 | Ingersoll-Rand Company | Coupling for anchor rod and sleeve |
US5073064A (en) * | 1990-04-27 | 1991-12-17 | Birmingham Bolt Company | Method and apparatus for retorquing an installed mine roof bolt |
US5219248A (en) * | 1992-05-14 | 1993-06-15 | The Eastern Company | Mine roof expansion anchor with improved bore hole engagement means and method of installation thereof |
US5344257A (en) * | 1992-12-02 | 1994-09-06 | The Eastern Company | Mine roof expansion anchor and bail element |
EP0687821A1 (en) * | 1994-06-13 | 1995-12-20 | Illinois Tool Works Inc. | Construction fastener assembly |
US5653078A (en) * | 1995-09-29 | 1997-08-05 | Erico International Corporation | Variable embedment anchor and method |
EP0770785A1 (en) * | 1995-10-26 | 1997-05-02 | Illinois Tool Works Inc. | Anchor dowell |
US5785463A (en) * | 1996-01-11 | 1998-07-28 | Jennmar Corporation | Combination cable bolt system |
US5954455A (en) * | 1996-01-11 | 1999-09-21 | Jennmar Corporation | Combination bolt system |
KR100383453B1 (en) * | 2000-07-19 | 2003-05-14 | 주식회사 삼보기술단 | Fixture for Rock Bolt |
US20040165958A1 (en) * | 2001-04-20 | 2004-08-26 | Mclaren Matthew David | Inserter and cap |
KR100489937B1 (en) * | 2002-03-08 | 2005-05-17 | 김유신 | Anchor for Engineering works |
US20090067932A1 (en) * | 2005-12-02 | 2009-03-12 | Fox William G | Re-tensionable cable bolt apparatus and related method |
US7896581B2 (en) * | 2005-12-02 | 2011-03-01 | Rhino Technologies Llc | Re-tensionable cable bolt apparatus and related method |
CN102165140A (en) * | 2008-09-25 | 2011-08-24 | 犀牛技术公司 | Re-tensionable cable bolt apparatus and related method |
US8550751B2 (en) | 2009-08-03 | 2013-10-08 | Dsi Underground Systems, Inc. | Non-tensionable cable bolt apparatus and related method |
Also Published As
Publication number | Publication date |
---|---|
GB1481599A (en) | 1977-08-03 |
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