US2191399A - Wall or like plug - Google Patents
Wall or like plug Download PDFInfo
- Publication number
- US2191399A US2191399A US136931A US13693137A US2191399A US 2191399 A US2191399 A US 2191399A US 136931 A US136931 A US 136931A US 13693137 A US13693137 A US 13693137A US 2191399 A US2191399 A US 2191399A
- Authority
- US
- United States
- Prior art keywords
- plug
- wires
- strands
- wall
- fibrous material
- 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
- 239000002657 fibrous material Substances 0.000 description 10
- 239000002184 metal Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 238000009954 braiding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000010618 wire wrap Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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
- F16B13/02—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose in one piece with protrusions or ridges on the shaft
Definitions
- This invention relates to wall or like plugs of the kind formed of fibrous material made up into a tubular structure by plaiting together or weaving strands of the fibrous material or by holding the strands in this formation by the aid of an adhesive or binding material, such plugs being intended to be inserted in holes in bricks, stone, plaster and like materials with a view to providing a suitable lining in the hole for the reception of a nail, screw or like fastening driven into the plug previously inserted in the hole and thereby ensuring a firm holding or retention of the said fastening therein.
- the strands of fibrous material may in some cases enclose or be wrapped around wires, or the tubular structure may be provided with a lining of soft metal to reinforce the plug and to facilitate entrance of the screw.
- the object of the present invention is to provide a plug which whilst possessing all the known desirable features of a fibre plug, especially a capability of expanding under the influence of a screw or nail driven into it, nevertheless has a substantial resistance to expansion or splittingif tapped on its end, for example, with a hammer, in order to drive it into a hole in which the plug fits closely.
- the plug is stiffened longitudinally bythe incorporation of a number of metal wires in such a manner that they exercise practically no restraining infiuence on the expansion of the plug when a screw or nail is driven into it, but give greater rigidity to the plug.
- wires 3 may be.
- wires 1 fibrous strandsB and if desired the are plaited or braided with latter may be given a twist in one direction whilst the wires have a twist in the opposite direction.
- the pitch of the helical coils or plaiting of r the wires is preferably not less than the pitch of a wood screw which the plug is intended to shown in Figure 4, where there is diagrammatically illustrated a single strand 9 of fibrous materialhaving wires l0 and II arranged around the strand so as to provide relatively long strips of wire on the exterior and interior faces of the plug.
- the wires may advantageously be arranged so that a large proportion of bare metal is exposed on the outer surface of the plug, and the wires may be made some of soft metal or alloy, and some of hard metal or alloy, to ensure a maximum grip on the wall of the hole into which the plug is inthe withdrawal. of the hole.
- a wall plug for the reception of driven fastenings comprising fibrous material, and wires incorporated with the fibrous material, the wires being plaited with the fibrous material in such a manner that parts of the wires are exposed on the outer surface of the plug.
- a wall plug for the reception of driven fastenings comprising strands of fibrous material arranged to form a tubular plug, and wires wound spirally around a plurality of the individual strands.
- a wall plug forthe reception of driven fastenings comprising strands of fibrous material arranged to form a tubular plug, and metal Wires, each of said wires being in conjoint cooperative relationship with an individual fibrous strand to form a composite fibre wire strand, parts of the wire being exposed on the exterior of the plug.
- a wall plug for the reception of driven fastenings comprising strands of fibrous material
Description
Feb. 20, 1940.
J. J/RAWLINGS 2,191,399
WALLOR LIKE PLUG Filed April 14, 1957 INVJINI'OR JOHN JOSEPH RA'XWLINGS Y ATTORNEYS Patented Feb. 20, 1940 WALL R LIKE PLUG John Joseph Rawlings,
London, England, as
signor to The Rawlplug Company Limited,
South Kensington, London,
England Application April 14, 1937, Serial No. 136,931
In Great Britain April 20,
Claims.
This invention relates to wall or like plugs of the kind formed of fibrous material made up into a tubular structure by plaiting together or weaving strands of the fibrous material or by holding the strands in this formation by the aid of an adhesive or binding material, such plugs being intended to be inserted in holes in bricks, stone, plaster and like materials with a view to providing a suitable lining in the hole for the reception of a nail, screw or like fastening driven into the plug previously inserted in the hole and thereby ensuring a firm holding or retention of the said fastening therein.
The strands of fibrous material may in some cases enclose or be wrapped around wires, or the tubular structure may be provided with a lining of soft metal to reinforce the plug and to facilitate entrance of the screw.
When a plug is constructed by weaving or plaiting strands of fibrous material into a tubular form, on insertion into a prepared hole it tends to expand if tapped on the end, thus impeding its further entry into the hole, whilst if it is composed entirely of fibrous strands laid side by side, there is a tendency for it to split or open out.
The object of the present invention is to provide a plug which whilst possessing all the known desirable features of a fibre plug, especially a capability of expanding under the influence of a screw or nail driven into it, nevertheless has a substantial resistance to expansion or splittingif tapped on its end, for example, with a hammer, in order to drive it into a hole in which the plug fits closely.
According to this invention the plug is stiffened longitudinally bythe incorporation of a number of metal wires in such a manner that they exercise practically no restraining infiuence on the expansion of the plug when a screw or nail is driven into it, but give greater rigidity to the plug.
In the accompanying drawing, Figures 1 to 4 show diagrammatically various embodiments of the invention.
For the purpose set forth, wires 3 may be.
wrapped helically around individual strands 4 of fibre and the strands plaited together to form a wall plug, as shown in Figure 1;- or strands 6 of fibre with exterior wire wrappings 5 may be laid side by side to form a tube and held in this formation by an adhesive or like binding material as shown in Figure 2. In a further arrangement according'to this invention, as shown in Figure 3, wires 1 fibrous strandsB and if desired the are plaited or braided with latter may be given a twist in one direction whilst the wires have a twist in the opposite direction.
The pitch of the helical coils or plaiting of r the wires is preferably not less than the pitch of a wood screw which the plug is intended to shown in Figure 4, where there is diagrammatically illustrated a single strand 9 of fibrous materialhaving wires l0 and II arranged around the strand so as to provide relatively long strips of wire on the exterior and interior faces of the plug.
In accordance with this invention the wires may advantageously be arranged so that a large proportion of bare metal is exposed on the outer surface of the plug, and the wires may be made some of soft metal or alloy, and some of hard metal or alloy, to ensure a maximum grip on the wall of the hole into which the plug is inthe withdrawal. of the hole.
I claim:
the plug longitudinally from 1. A wall plug for the reception of driven fastenings comprising fibrous material, and wires incorporated with the fibrous material, the wires being plaited with the fibrous material in such a manner that parts of the wires are exposed on the outer surface of the plug.
2. A wall plug for the reception of driven fastenings, comprising strands of fibrous material arranged to form a tubular plug, and wires wound spirally around a plurality of the individual strands.
3. A wall plug forthe reception of driven fastenings, comprising strands of fibrous material arranged to form a tubular plug, and metal Wires, each of said wires being in conjoint cooperative relationship with an individual fibrous strand to form a composite fibre wire strand, parts of the wire being exposed on the exterior of the plug.
4. A wall plug for the reception of driven fastenings, comprising strands of fibrous material,
tionship with an individual fibrous strand, such relationship consisting in arranging the wire around the strand so as to provide relatively great lengths of wire on the exterior and interior faces of the strand when forming part of the 5 tubular structure.
JOHN JOSEPH RAWLING-S.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB11229/36A GB478563A (en) | 1936-04-20 | 1936-04-20 | Improvements relating to wall or like plugs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2191399A true US2191399A (en) | 1940-02-20 |
Family
ID=9982363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US136931A Expired - Lifetime US2191399A (en) | 1936-04-20 | 1937-04-14 | Wall or like plug |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2191399A (en) |
| GB (1) | GB478563A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6065387A (en) * | 1998-07-28 | 2000-05-23 | Blair; Jim S. | Piston apparatus for gas/liquid pipeline |
-
1936
- 1936-04-20 GB GB11229/36A patent/GB478563A/en not_active Expired
-
1937
- 1937-04-14 US US136931A patent/US2191399A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6065387A (en) * | 1998-07-28 | 2000-05-23 | Blair; Jim S. | Piston apparatus for gas/liquid pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| GB478563A (en) | 1938-01-20 |
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