GB2034850A - Anchoring of bolts in masonry holes - Google Patents
Anchoring of bolts in masonry holes Download PDFInfo
- Publication number
- GB2034850A GB2034850A GB7938899A GB7938899A GB2034850A GB 2034850 A GB2034850 A GB 2034850A GB 7938899 A GB7938899 A GB 7938899A GB 7938899 A GB7938899 A GB 7938899A GB 2034850 A GB2034850 A GB 2034850A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bolt
- anchoring
- hole
- ribs
- masonry
- 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.)
- Withdrawn
Links
- 238000004873 anchoring Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 18
- 230000001070 adhesive effect Effects 0.000 abstract description 18
- 239000003795 chemical substances by application Substances 0.000 abstract description 10
- 150000001875 compounds Chemical class 0.000 description 15
- 239000000428 dust Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000012791 sliding layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
Abstract
The periphery of the anchoring portion of the bolt 4 is provided with a plurality of individual ribs 3 extending obliquely with respect to the longitudinal axis of the bolt. One end of each rib 3 lies on the same circumferential line as one end of the next rib. A hole for receiving fixing agent (e.g. adhesive) is drilled in the masonry, which hole has a diameter corresponding to the diameter of the bolt measured across the ribs. <IMAGE>
Description
SPECIFICATION
Anchoring bolt for masonry
This invention relates to an anchoring bolt for masonry and to a method of anchoring employing that bolt.
The present invention provides an anchoring bolt for masonry, the periphery of the anchoring portion of the bolt being provided with a plurality of individual ribs, and at least some of the ribs being arranged obliquely with respect to the longitudinal axis of the bolt.
The present invention also provides a method of anchoring a bolt according to the invention in masonry, the method comprising drilling a hole in the masonry, the hole having a diameter corresponding to the diameter of the bolt measured across the ribs, providing fixing agent in the hole and inserting the bolt into the hole.
The present invention further relates to the anchoring of a bolt in masonry, preferably a concrete building component such as a panel, by inserting the anchoring part of the bolt into a drilled hole containing a fixing agent, for example an adhesive compound.
An anchor bolt for embedding in an adhesive compound is known which is constructed as a threaded bolt with which the components of a multi-component adhesive compound are mixed in the drilled hole using a power drill. The introduction of the adhesive compound into the drilled hole can be effected, for example by using a glass cartridge containing the adhesive and having several compartments for separating the adhesive components. The cartridge is shattered and crushed by the threaded bolt in the drilled hole.
The holding value of the anchoring is very strongly influenced, firstly, by the intimate mixing of the components of the adhesive compound, and, secondly, by the nature of the wall of the drilled hole. As the hole is being drilled, drill dust is forced into the pores and open spaces of the hole, and can be blown out only with great difficulty or not at all as the drilled hole is cleaned up. This drill dust therefore forms a sliding layer between the hardened adhesive compound and the wall of the drilled hole which appreciably reduces the holding value of the anchorage. The mixing of the adhesive compound using a threaded bolt also presents problems, especially if the mixing time is relatively long, because some of the adhesive compound is carried by the threads of the threaded bolt out of the drilled hole.It is therefore practically impossible to achieve over the depth of the drilled hole a through mixing which will be adequate for the optimal reaction of the components.
The present invention is based on the problem of producing a bolt with which the above described disadvantages can be overcome.
According to the invention this is achieved by providing the anchoring part of the bolt with external ribs, the external measurement of which ribs corresponds approximately to the diameter of the drilled hole and at least some of the ribs are arranged obliquely with respect to the longitudinal direction of the bolt.
By matching the external measurement of the external ribs to the diameter of the drilled hole, the external edge of the external ribs scrapes drill dust away from the wall of the drilled hole, so that the adhesive compound is able to adhere to the solid concrete. Moreover, the external ribs fix the bolt centrally in the drilled hole during the hardening phase of the adhesive compound. It is thus no longer necessary to hold the bolt as the adhesive compound is hardening, as is required with known anchoring processes (using a threaded bolt) where the diameter of the drilled hole is greater than the diameter of the bolt.
The arrangement of some of the external ribs obliquely with respect to the longitudinal direction of the bolt provides not only a very thorough mixing of the adhesive compound, but also a good wedging action against being pulled out once the adhesive compound has hardened. Because the oblique ribs are discrete the adhesive compound is prevented from being carried out of the drilled hole.
Advantageously, the end of one oblique rib may lie in each case on the same circumferential line as the start of the next oblique rib. Thus, for the entire length of the anchoring part of the bolt there is produced an offset scraper edge which rubs the drill dust off the wall of the drilled hole along the entire length thereof.
An anchoring bolt constructed in accordance with the invention and a method of anchoring that bolt in masonry will now be described, by way of example only, with reference to the accompanying drawing, in which.
Fig. 1 shows the anchoring bolt connected to a power drill attachment, and
Fig. 2 shows an anchorage in masonry using the anchoring bolt.
Referring to the accompanying drawing, to effect the anchorage shown in Fig. 2, first of all a hole 2 is drilled in masonry 1 (which may be a wall or panel or other building part, made for example of concrete). The diameter of the hole 2 corresponds approximately to the diameter of the bolt 4 as measured across its ribs 3. The drilled hole is then filled with a fixing agent 5. The latter may, for example, be an adhesive compound and have two or more components, which are packed, for example, in a foil tube having respective compartments for each component.
The components of the fixing agent can be mixed in the hole by the bolt 4, the latter being connected, for that purpose to a power drill (not shown). To transmit torque from the power drill to the bolt 4 an adaptor 6 is used one end of which, has a slightly tapering and thus tight-fitting receiving bore 7, which is pushed over the external thread 8 of the bolt 4. The other end of the adaptor 6 has an opening 9 which is provided with two diametrically opposite longitudinal slots 10.
The blades 11 of a twist drill are engageable in these slots so that torque can be transmitted from the drill to the adaptor 6.
Each of the ribs 3 extends obliquely relative to the longitudinal axis of the bolt.
As a result, the ribs not only scrape the drill dust away from the wall of the drilled hole but also they serve intimately to mix the components of the fixing agent together.
By pressing the bolt 4 into the drilled hole the fixing agent is forced from the bottom of the hole towards the mouth of the hole, so that the hollow spaces between the wall of the drilled hole and the outer periphery of the bolt are completely filled. By so axially arranging the ribs that the end of one oblique rib lies on the same circumferential line at the start of the next oblique rib, a scraper edge extending over the whole length of the anchoring part4a is provided which serves to clean the wall of the drilled hole. Because the ribs 3 are separate from one another, the fixing agent is prevented from being carried out of the drilled hole during mixing.
The oblique ribs may have a very good wedging action and thus impart to the bolt a very high resistance to withdrawal, free of expansion pressure, once the fixing agent has hardened.
When the correct insertion depth of the bolt is reached, the adaptor 6 is removed from the bolt 4.
When the fixing agent has hardened, an article 12, such as a building panel can be fastened to the building part 1 by screwing a nut 13 onto the external thread 8 of the bolt 4.
Claims (5)
1. An anchoring bolt for masonry, the periphery of the anchoring portion of the bolt being provided with a plurality of individual ribs, and at least some of the ribs being arranged obliquely with respect to the longitudinal axis of the bolt.
2. An anchoring bolt as claimed in claim 1, in which the ribs are so axially arranged that one end of each rib lies on the same circumferential line as one end of the next rib.
3. An anchoring bolt substantially as hereinbefore described with reference to, and as illustrated by the accompanying drawing.
4. A method of anchoring a bolt as claimed in any one of claims 1 to 3 in masonry, the method comprising drilling a hole in the masonry, the hole having a diameter corresponding to the diameter of the bolt measured across the ribs, providing fixing agent in the hole and inserting the bolt into the hole.
5. A method of anchoring a bolt in masonry substantially as hereinbefore described with reference to, and as illustrated by the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782848761 DE2848761A1 (en) | 1978-11-10 | 1978-11-10 | ANCHORING A BOLT BY ADHESIVE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2034850A true GB2034850A (en) | 1980-06-11 |
Family
ID=6054309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7938899A Withdrawn GB2034850A (en) | 1978-11-10 | 1979-11-09 | Anchoring of bolts in masonry holes |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS5568951A (en) |
| AT (1) | AT368254B (en) |
| BE (1) | BE879930A (en) |
| BR (1) | BR7907075A (en) |
| DE (1) | DE2848761A1 (en) |
| DK (1) | DK456679A (en) |
| ES (1) | ES246372Y (en) |
| FR (1) | FR2441080A1 (en) |
| GB (1) | GB2034850A (en) |
| GR (1) | GR65273B (en) |
| HU (1) | HU178539B (en) |
| NL (1) | NL7907035A (en) |
| SE (1) | SE7908590L (en) |
| YU (1) | YU248079A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4404875A (en) * | 1980-07-18 | 1983-09-20 | Usm Corporation | Installer drive unit for chemical anchor |
| GB2169050A (en) * | 1984-12-15 | 1986-07-02 | Dowty Group Services | Anchor bolt and method of application thereof to associated structure |
| GB2289738A (en) * | 1994-05-25 | 1995-11-29 | Ramset Fasteners | Chemically-set anchor stud system |
| US5730565A (en) * | 1994-11-08 | 1998-03-24 | Fischerwerke, Artur Fischer Gmbh & Co. K.G. | Anchor bolt for anchoring with compound mass |
| AU696114B2 (en) * | 1994-05-25 | 1998-09-03 | Ramset Fasteners (Aust.) Pty. Limited | Chemically-set anchor stud system |
| WO1999022151A1 (en) * | 1997-10-23 | 1999-05-06 | Upat Gmbh & Co. | Element for securing railway rails on a solid track |
| EP0947713A1 (en) * | 1998-04-02 | 1999-10-06 | Societe De Prospection Et D'inventions Techniques Spit | Fastening a rod to a concrete support |
| EP1428937A1 (en) * | 2002-12-10 | 2004-06-16 | TOGE-Dübel A. Gerhard KG | Method for fixing a traffic guiding device on asphalt covering of a road |
| US7785041B2 (en) | 2008-05-21 | 2010-08-31 | Hilti Aktiengesellschaft | Setting method for anchoring a fastening element |
| WO2012117112A1 (en) * | 2011-03-02 | 2012-09-07 | Powers Fasteners Europe Bv | Anchor bolt systems and methods of installing anchor bolts |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT399207B (en) * | 1993-06-16 | 1995-04-25 | Wetternek Hans | Wall anchor |
| DE4403131A1 (en) * | 1994-02-02 | 1995-08-03 | Fischer Artur Werke Gmbh | Anchor bolt for anchoring by means of a compound and method for its production |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1391863A (en) * | 1964-01-25 | 1965-03-12 | J Bechu Ets | Anchor for fixing a screw in a fiber panel |
| FR2033559A5 (en) * | 1969-02-27 | 1970-12-04 | Negroni Et Cie | |
| DE2538821A1 (en) * | 1975-09-01 | 1977-03-03 | Hilti Ag | ADHESIVE ANCHORS |
| DE2556493A1 (en) * | 1975-12-16 | 1977-06-30 | Alfons Harke | Adhesively fixed wall anchor bolt - uses helical web to influence adhesive flow behind outer sealing ring |
| GR65667B (en) * | 1978-10-17 | 1980-10-16 | Fischer Artur | Anchoring of one element of fastening by contagions mass |
-
1978
- 1978-11-10 DE DE19782848761 patent/DE2848761A1/en not_active Withdrawn
-
1979
- 1979-09-19 GR GR60073A patent/GR65273B/en unknown
- 1979-09-21 NL NL7907035A patent/NL7907035A/en not_active Application Discontinuation
- 1979-10-12 YU YU248079A patent/YU248079A/en unknown
- 1979-10-17 SE SE7908590A patent/SE7908590L/en not_active Application Discontinuation
- 1979-10-17 HU HUFI000714 patent/HU178539B/en unknown
- 1979-10-18 FR FR7925925A patent/FR2441080A1/en not_active Withdrawn
- 1979-10-23 ES ES1979246372U patent/ES246372Y/en not_active Expired
- 1979-10-29 DK DK456679A patent/DK456679A/en unknown
- 1979-10-30 AT AT0700779A patent/AT368254B/en not_active IP Right Cessation
- 1979-10-31 BR BR7907075A patent/BR7907075A/en unknown
- 1979-11-08 JP JP14391979A patent/JPS5568951A/en active Pending
- 1979-11-09 BE BE0/198043A patent/BE879930A/en unknown
- 1979-11-09 GB GB7938899A patent/GB2034850A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4404875A (en) * | 1980-07-18 | 1983-09-20 | Usm Corporation | Installer drive unit for chemical anchor |
| GB2169050A (en) * | 1984-12-15 | 1986-07-02 | Dowty Group Services | Anchor bolt and method of application thereof to associated structure |
| GB2289738A (en) * | 1994-05-25 | 1995-11-29 | Ramset Fasteners | Chemically-set anchor stud system |
| AU696114B2 (en) * | 1994-05-25 | 1998-09-03 | Ramset Fasteners (Aust.) Pty. Limited | Chemically-set anchor stud system |
| US5730565A (en) * | 1994-11-08 | 1998-03-24 | Fischerwerke, Artur Fischer Gmbh & Co. K.G. | Anchor bolt for anchoring with compound mass |
| WO1999022151A1 (en) * | 1997-10-23 | 1999-05-06 | Upat Gmbh & Co. | Element for securing railway rails on a solid track |
| EP0947713A1 (en) * | 1998-04-02 | 1999-10-06 | Societe De Prospection Et D'inventions Techniques Spit | Fastening a rod to a concrete support |
| FR2777052A1 (en) * | 1998-04-02 | 1999-10-08 | Spit Soc Prospect Inv Techn | ROD FOR FIXING TO A CONCRETE SUPPORT |
| EP1428937A1 (en) * | 2002-12-10 | 2004-06-16 | TOGE-Dübel A. Gerhard KG | Method for fixing a traffic guiding device on asphalt covering of a road |
| US7785041B2 (en) | 2008-05-21 | 2010-08-31 | Hilti Aktiengesellschaft | Setting method for anchoring a fastening element |
| WO2012117112A1 (en) * | 2011-03-02 | 2012-09-07 | Powers Fasteners Europe Bv | Anchor bolt systems and methods of installing anchor bolts |
Also Published As
| Publication number | Publication date |
|---|---|
| HU178539B (en) | 1982-05-28 |
| YU248079A (en) | 1983-01-21 |
| SE7908590L (en) | 1980-05-11 |
| DE2848761A1 (en) | 1980-05-22 |
| FR2441080A1 (en) | 1980-06-06 |
| ATA700779A (en) | 1982-01-15 |
| GR65273B (en) | 1980-07-31 |
| ES246372U (en) | 1980-02-01 |
| NL7907035A (en) | 1980-05-13 |
| JPS5568951A (en) | 1980-05-24 |
| AT368254B (en) | 1982-09-27 |
| BE879930A (en) | 1980-03-03 |
| DK456679A (en) | 1980-05-11 |
| ES246372Y (en) | 1980-08-16 |
| BR7907075A (en) | 1980-06-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |