GB2139307A - Fastening rail-supporting members to railway sleepers - Google Patents

Fastening rail-supporting members to railway sleepers Download PDF

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Publication number
GB2139307A
GB2139307A GB08312474A GB8312474A GB2139307A GB 2139307 A GB2139307 A GB 2139307A GB 08312474 A GB08312474 A GB 08312474A GB 8312474 A GB8312474 A GB 8312474A GB 2139307 A GB2139307 A GB 2139307A
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GB
United Kingdom
Prior art keywords
shell
hole
sleeper
shells
screwspike
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.)
Granted
Application number
GB08312474A
Other versions
GB8312474D0 (en
GB2139307B (en
Inventor
Michael Joseph Batty
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pandrol Ltd
Original Assignee
Pandrol Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pandrol Ltd filed Critical Pandrol Ltd
Priority to GB08312474A priority Critical patent/GB2139307B/en
Publication of GB8312474D0 publication Critical patent/GB8312474D0/en
Publication of GB2139307A publication Critical patent/GB2139307A/en
Application granted granted Critical
Publication of GB2139307B publication Critical patent/GB2139307B/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/04—Fastening on wooden or concrete sleepers or on masonry without clamp members
    • E01B9/14—Plugs, sleeves, thread linings, or other inserts for holes in sleepers
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

A device for insertion in an oversize and/or malformed hole in a wooden railway sleeper and for receiving a screwspike for fastening a rail-supporting member to the sleeper, comprises a shell which is internally screw-threaded and consists of two or more of part- shells held together. Each part-shell is in the form of a curved sheet extending part of the way around the axis of the shell and having at least one outwardly-turned longitudinal flange (2) which opposes any tendency for rotational movement of the device about the axis when the device is inserted in a hole in a wooden railway sleeper and a screwspike is screwed into the device. <IMAGE>

Description

SPECIFICATION Fastening rail-supporting members to railway sleepers According to a first aspect of the invention, there is provided a device which is suitable for insertion in an oversize and/or malformed hole in a wooden railway sleeper and for receiving a screwspike for fastening a railsupporting member to the sleeper, the device comprising a shell which is internally screwthreaded and consists of a plurality of partshells held together, each part-shell being in the form of an arc extending only part of the way around the axis of the shell and having, at at least one extremity of the arc, an outwardly-turned flange which opposes any tendency for rotational movement of the device about said axis when the device is inserted in a hole in a wooden railway sleeper and a screwspike is screwed into the device.
According to a second aspect of the invention, there is provided a combination of a wooden railway sleeper having a hole in it extending downwardly from its top, a device according to the invention inserted in the hole, a rail-supporting member lying on the sleeper and a screw-spike passing through a hole in said member and into said device.
Preferably, the device comprises only two part-shells, each extending half-way around said axis. Whether it comprises only two partshells or more, there is preferably an outwardly-turned flange at each extremity of each arc.
The part-shells are preferably made of sheet metal and the internal screw-thread is preferably imparted to them in a stamping operation.
The internal passageway through the device preferably tapers, proceeding downwardly from the top of the device, to match conventional screwspikes. A bail or two or more bails preferably extends or extend around the assembly of the part-shells to hold them together.
An example in accordance with the invention is described below with reference to the accompanying drawings, in which: Figure 1 shows a front view of a part-shell, Figure 2 shows a side view of it, and Figure 3 shows a plan view of it.
The part-shell illustrated is one of two identical elongate part-shells which are to be assembled to make a complete shell and held together by two bails (not shown) extending around the shell near opposite ends of it.
Each part-shell is made of sheet metal and is in the form of a semi-circular arc which extends half-way around the axis 1 of the shell.
At each end of each arc there is an outwardlyturned flange 2 and the flanges of the two part-shells abut in the assembly of the two part-shells. The flanges are wider at the bottoms of the part-shells than at the tops so that the internal passageway through the complete shell tapers, proceeding downwardly, to match the taper on a conventional screwspike.
Grooves are formed in each part-shell in a stamping operation, possibly in the same relative movement of forming tools as is used to provide the arcuate shape and the flanges 2, these grooves being such that in the complete shell there is an internal screw-thread which matches the screw-thread on the screwspike.
When a hole, extending downwardly from the top of a wooden railway sleeper, is oversize and/or malformed, due for example to excessive wear having taken place, so that a conventional screwspike inserted in it would not be held sufficiently securely, the complete shell, with its bails, as described above may be inserted in the hole, with the wider ends of the flanges 2 lowermost and with the other ends also within the hole. Then a rail chair or baseplate may be placed on the sleeper, with a hole through it registering with the passageway through the shell, and the shank of a screwspike may be passed through the hole in the rail chair or base plate and screwed into the shell until the rail chair or base plate is held securely on the sleeper. The flanges 2 prevent rotation of the shell about the axis 1 during the screwing of the screwspike into the shell.This screwing action is accompanied by the two part-shells being forced apart, so that their ridged outer surfaces grip the wood, and the bails stretching and perhaps breaking.
For some screwspikes, the dimensions x, y and z of the part-shells may suitably be 30, 10 and 80 mm., respectively.
1. A device which is suitable for insertion in an oversize and/or malformed hole in a wooden railway sleeper and for receiving a screwspike for fastening a rail-supporting member to the sleeper, the device comprising a shell which is internally screw-threaded and consists of a plurality of part-shells held together, each part-shell being in the form of an arc extending only part of the way around the axis of the shell and having, at at least one extremity of the arc, an outwardly-turned flange which opposes any tendency for rotational movement of the device about said axis when the device is inserted in a hole in a wooden railway sleeper and a screwspike is screwed into the device.
2. A device according to Claim 1 and comprising only two part-shells, each extending half-way around said axis.
3. A device according to Claim 1 or 2, wherein there is a said outwardly-turned flange at each extremity of each arc.
4. A device according to Claim 1, 2 or 3, wherein the part-shells are made of sheet metal.
5. A device according to any preceding claim, wherein the internal screw-thread has
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (9)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Fastening rail-supporting members to railway sleepers According to a first aspect of the invention, there is provided a device which is suitable for insertion in an oversize and/or malformed hole in a wooden railway sleeper and for receiving a screwspike for fastening a railsupporting member to the sleeper, the device comprising a shell which is internally screwthreaded and consists of a plurality of partshells held together, each part-shell being in the form of an arc extending only part of the way around the axis of the shell and having, at at least one extremity of the arc, an outwardly-turned flange which opposes any tendency for rotational movement of the device about said axis when the device is inserted in a hole in a wooden railway sleeper and a screwspike is screwed into the device. According to a second aspect of the invention, there is provided a combination of a wooden railway sleeper having a hole in it extending downwardly from its top, a device according to the invention inserted in the hole, a rail-supporting member lying on the sleeper and a screw-spike passing through a hole in said member and into said device. Preferably, the device comprises only two part-shells, each extending half-way around said axis. Whether it comprises only two partshells or more, there is preferably an outwardly-turned flange at each extremity of each arc. The part-shells are preferably made of sheet metal and the internal screw-thread is preferably imparted to them in a stamping operation. The internal passageway through the device preferably tapers, proceeding downwardly from the top of the device, to match conventional screwspikes. A bail or two or more bails preferably extends or extend around the assembly of the part-shells to hold them together. An example in accordance with the invention is described below with reference to the accompanying drawings, in which: Figure 1 shows a front view of a part-shell, Figure 2 shows a side view of it, and Figure 3 shows a plan view of it. The part-shell illustrated is one of two identical elongate part-shells which are to be assembled to make a complete shell and held together by two bails (not shown) extending around the shell near opposite ends of it. Each part-shell is made of sheet metal and is in the form of a semi-circular arc which extends half-way around the axis 1 of the shell. At each end of each arc there is an outwardlyturned flange 2 and the flanges of the two part-shells abut in the assembly of the two part-shells. The flanges are wider at the bottoms of the part-shells than at the tops so that the internal passageway through the complete shell tapers, proceeding downwardly, to match the taper on a conventional screwspike. Grooves are formed in each part-shell in a stamping operation, possibly in the same relative movement of forming tools as is used to provide the arcuate shape and the flanges 2, these grooves being such that in the complete shell there is an internal screw-thread which matches the screw-thread on the screwspike. When a hole, extending downwardly from the top of a wooden railway sleeper, is oversize and/or malformed, due for example to excessive wear having taken place, so that a conventional screwspike inserted in it would not be held sufficiently securely, the complete shell, with its bails, as described above may be inserted in the hole, with the wider ends of the flanges 2 lowermost and with the other ends also within the hole. Then a rail chair or baseplate may be placed on the sleeper, with a hole through it registering with the passageway through the shell, and the shank of a screwspike may be passed through the hole in the rail chair or base plate and screwed into the shell until the rail chair or base plate is held securely on the sleeper. The flanges 2 prevent rotation of the shell about the axis 1 during the screwing of the screwspike into the shell.This screwing action is accompanied by the two part-shells being forced apart, so that their ridged outer surfaces grip the wood, and the bails stretching and perhaps breaking. For some screwspikes, the dimensions x, y and z of the part-shells may suitably be 30, 10 and 80 mm., respectively. CLAIMS
1. A device which is suitable for insertion in an oversize and/or malformed hole in a wooden railway sleeper and for receiving a screwspike for fastening a rail-supporting member to the sleeper, the device comprising a shell which is internally screw-threaded and consists of a plurality of part-shells held together, each part-shell being in the form of an arc extending only part of the way around the axis of the shell and having, at at least one extremity of the arc, an outwardly-turned flange which opposes any tendency for rotational movement of the device about said axis when the device is inserted in a hole in a wooden railway sleeper and a screwspike is screwed into the device.
2. A device according to Claim 1 and comprising only two part-shells, each extending half-way around said axis.
3. A device according to Claim 1 or 2, wherein there is a said outwardly-turned flange at each extremity of each arc.
4. A device according to Claim 1, 2 or 3, wherein the part-shells are made of sheet metal.
5. A device according to any preceding claim, wherein the internal screw-thread has been imparted to each part-shell in a stamping operation.
6. A device according to any preceding claim, wherein the internal passageway through the device tapers, proceeding downwardly from the top of the device, to match conventional screwspikes.
7. A device according to any preceding claim wherein at least one bal extends around the assembly of the part-shells to hold them together.
8. A device which is suitable for insertion in an oversize and/or malformed hole in a wooden railway sleeper and for receiving a screwspike for fastening a rail-supporting member to the sleeper, substantially as hereinbefore described with reference to the accompanying drawing.
9. A combination of a wooden railway sleeper having a hole in it extending downwardly from its top, a device according to any preceding claim inserted in the hole, a railsupporting member lying on the sleeper and a screwspike passing through a hole in said member and into said device.
9. A combination of a wooden railway sleeper having a hole in it extending downwardly from its top, a device according to any preceding claim inserted in the hole, a railsupporiing member lying on the sleeper and a screwspike passing through a hole in said member and into said device.
CLAIMS 1. A device which is suitable for insertion in an oversize and/or malformed hole in a wooden railway sleeper and for receiving a screwspike for fastening a rail-supporting member to the sleeper, the device comprising a shell which is internally screw-threaded when the device is made and before any screw-threaded member is inserted in it and consists of two and only two part-shells which are not integral with one another but are held together, each part-shell being in the form of an arc extending half of the way around the axis of the shell and having, at at least one extremity of the arc, an outwardly-turned flange which opposes any tendency for rotational movement of the device about said axis when the device is inserted in a hole in a wooden railway sleeper and a screwspike is screwed into the device.
2. A device according to claim 1, wherein there is a said outwardly-turned flange at each extremity of each arc.
3. A device according to claim1 or 2 in which each flange extends over the entire length of its part-shell.
4. A device according to claim 1, 2 or 3, wherein the part-shells are made of sheet metal.
5. A device according to any preceding claim, wherein the internal screw-thread has been imparted to each part-shell in a stamping operation.
6. A device according to any preceding claim, wherein the internal passageway through the device tapers, proceeding downwardly from the top of the device, to match conventional screwspikes.
7. A device according to any preceding claim, wherein at least one bail extends around the assembly of the part-shells to hold them together.
8. A device which is suitable for insertion in an oversize and/or malformed hole in a wooden railway sleeper and for receiving a screwspike for fastening a rail-supporting member to the sleeper, substantially as hereinbefore described with reference to the accompanying drawing.
GB08312474A 1983-05-06 1983-05-06 Fastening rail-supporting members to railway sleepers Expired GB2139307B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08312474A GB2139307B (en) 1983-05-06 1983-05-06 Fastening rail-supporting members to railway sleepers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08312474A GB2139307B (en) 1983-05-06 1983-05-06 Fastening rail-supporting members to railway sleepers

Publications (3)

Publication Number Publication Date
GB8312474D0 GB8312474D0 (en) 1983-06-08
GB2139307A true GB2139307A (en) 1984-11-07
GB2139307B GB2139307B (en) 1986-11-26

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GB08312474A Expired GB2139307B (en) 1983-05-06 1983-05-06 Fastening rail-supporting members to railway sleepers

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB741793A (en) *
GB1113394A (en) * 1964-10-26 1968-05-15 Fischer Artur Wall plug
GB1154574A (en) * 1965-07-06 1969-06-11 Olav Wesenberg Improvements in or relating to Expansible Anchor Bolts.
GB1343199A (en) * 1970-08-08 1974-01-10 Fischer Artur Wall plug
GB1409662A (en) * 1971-10-29 1975-10-08 Harris Ltd Edgar Expander device for retention in a hole
GB2007323A (en) * 1977-11-08 1979-05-16 Fischer Artur Improvements in and Relating to a Fixing Plug for Masonry
GB2047370A (en) * 1979-04-27 1980-11-26 Gregorovic D A hooking or attachment device for fixing into a wall or surface

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB741793A (en) *
GB1113394A (en) * 1964-10-26 1968-05-15 Fischer Artur Wall plug
GB1154574A (en) * 1965-07-06 1969-06-11 Olav Wesenberg Improvements in or relating to Expansible Anchor Bolts.
GB1343199A (en) * 1970-08-08 1974-01-10 Fischer Artur Wall plug
GB1409662A (en) * 1971-10-29 1975-10-08 Harris Ltd Edgar Expander device for retention in a hole
GB2007323A (en) * 1977-11-08 1979-05-16 Fischer Artur Improvements in and Relating to a Fixing Plug for Masonry
GB2047370A (en) * 1979-04-27 1980-11-26 Gregorovic D A hooking or attachment device for fixing into a wall or surface

Also Published As

Publication number Publication date
GB8312474D0 (en) 1983-06-08
GB2139307B (en) 1986-11-26

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PCNP Patent ceased through non-payment of renewal fee