GB1587181A - Rail clips - Google Patents
Rail clips Download PDFInfo
- Publication number
- GB1587181A GB1587181A GB9238/76A GB923876A GB1587181A GB 1587181 A GB1587181 A GB 1587181A GB 9238/76 A GB9238/76 A GB 9238/76A GB 923876 A GB923876 A GB 923876A GB 1587181 A GB1587181 A GB 1587181A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rail
- clip
- sleeper
- shows
- present
- 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
Links
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
- E01B9/32—Fastening on steel sleepers with clamp members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
Description
(54) IMPROVEMENTS IN OR RELATING TO RAIL CLIPS
(71) I, MICHAEL JOHN FRENCH, a
British Subject, of Hurley Lodge, Mill
Lane, Hurley, Berkshire, do hereby declare the invention, for which I pray that a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement: - The present invention relates to train rail clips, in particular, but not exclusively to รก system of fastening rails to steel sleepers as currently used by the South African
Railways.
The South African Railway uses steel sleepers with fastening holes punched therein, utilising three different clips to provide adjustment for three different gauges of tracks for main lines required, with an additional three other clips being used for sidings and marshalling yards.
The main line - types are types A, B and
C and the sidings and marshalling yards are types D, E and F. Although there are variations in most dimensions of the types of clips presently in use, the main difference is the dimension between the tongue cooperating with the edge of the holes punched in the steel sleepers and the undercut machined face which fits the edge of the rail. This dimension varies considerably, for clip A being 1i inch, for clip B being 1 15/16 inch, for clip C being 2Q inch, for clip D being 2 5/16 inch, for clip E being 1 9/16 inch and for clip F being 2 7/16 inch.
It is an object of the present invention to provide a method whereby existing (and new) rail mounted on steel sleepers can be insulated and it is a second object, to provide a clip which is capable of reducing the number of stock clips by being capable of performing the separate functions of two or more clips in different orientations of use.
According to the first aspect of the present invention there is provided a rail clip for mounting a rail on steel sleepers, which comprises a substantially rectangular block of insulating material, two or three sides of the block being undercut to fit
the flange of a rail, and a hole for mount
ing the clip, the hole being unequal dist
ances from theundercut sides, the distance
between the mounting hole and at least
one non-undercut side being sufficient to
enable a rail to be lifted from a sleeper past the clip or lowered past the clip onto
the sleeper, when the clip is oriented so that the said non-undercut side is parallel to the edge of the rail flange.
According to the second aspect of the
present invention there is provided a
method of mounting a rail on a steel
sleeper, which comprises installing the rail
on the steel sleeper by inserting an insulated
pad between the rail and the sleeper, the insulated pad being located in both longi
tudinal and transverse directions on the
sleeper by lugs cooperating with holes in
the sleeper, the rail being fastened to the
track through the agency of a clip in
accordance with the first aspect of the
invention.
According to an embodiment of the first aspect of the present invention, there is provided rail clip having locating lugs
provided on two sides of the hole between
the hole and two opposed undercut sides.
As will be appreciated, the undercut faces of the clip will lip over the rail.
With the clip of the first embodiment, the
bolts holding the same to a rail can be loosened and the clips on both side of a rail turned so that the vertically cut side is adjacent the rail; the rails may then be changed or moved. Obviously, the rail is originally inserted into the fastenings with the clips in this position. It is important to note that the flat insulating pad which sits between the rail and the sleeper will extend outwardly covering the bolt and the
slot and with the lug extending downwardly by, for example, half an inch into the -face of the slot furthest from the rail to ensure that the bolt bears against this lug, taking up the slack in the slot and transferring the side thrust on the rail to the sleeper. Since adjustment is attained with a clip, the bolt must be located in the constant position.It is also preferred to include a second lug projecting vertically about an eighth of an inch above the flat insulating pad so that the flap clip (of the first aspect of the present invention) bears on this lug and the rail like a bridge with the bolt pulling down in the middle and giving the clamping force required. The existing clips have one lug which locates in the back of the slot and by including the lug in the insulated base plate the present invention enables the use of an adjustable clip at the same time locating the insulated pad definitively on the sleeper. The existing pads can work loose.
Existing clips are made of malleable iron and it is proposed, as referred to above, to make the new clip of an insulating material, for example by injection moulding with a special I.C.I. powder, nylon 66 with 30% glass reinforcing. To reduce the stress in the lip overlying the rail, it is proposed to use a disc spring which will collapse under the load of the nut and will reinforce and increase the bearing area of the nut on the clip. It is preferable that the disc spring will be of sufficient diameter to always project over the section of the clip which is over the rail.
It will be seen that the present invention can enable the insulation of existing and new rail track mounted on steel sleepers and can insulate the rail from the sleeper by insulated pads which are located in both horizontal directions on the sleeper by lugs. The existing slots of the sleepers are used in the combined insulating fastener. South African Railways currently use six differing clips to obtain their gauge requirements and to suit rails of different ways and shape whereas the new clip will have at least two and preferably three (depending on the type) uses. When made of nylon, the various faces can of course be colour coded.
The clip proposed according to the preferred embodiment of the first aspect of the present invention will of course enable the stock of clips to be reduced from six clips to three clips. lf this were made of a plastics material, such as nylon 66 reinforced with glass fibre, it may also be colour coded.
In the accompanying drawings, there is shown, by way of example, various features.
Figure 1 shows a plan view of an insulating pad for use in the invention,
Figure 2 shows a side view of the pad of Figure 1,
Figure 3 shows an underneath view of a plastics material clip according to the first aspect of the present invention,
Figure 4 shows a side view of the clip of Figure 3,
Figure 5 shows an underneath view of another clip in accordance with the first aspect of the present invention,
Figure 6 shows a side view of the clip of Figure 5,
Figure 7 shows a section through a rail mounted by present means (Prior Art),
Figure 8 shows views of present bolts (Prior Art), and
Figure 9 shows views of a present clip (Prior Art).
WHAT I CLAIM IS: - 1. A rail clip for mounting a rail on steel sleepers, which comprises a substantially rectangular block of insulating material, two or three sides of the block being undercut to fit the flange of a rail, and a hole for mounting the clip, the hole being unequal distances from the undercut sides, the distance between the mounting hole and at least one non-undercut side being sufficient to enable a rail to be lifted from a sleeper past the clip or lowered past the clip onto the sleeper, when the clip is oriented so that one of the said non-undercut sides is parallel to the edge of the rail flange.
2. A rail clip according to Claim 1, wherein locating lugs are provided on two sides of the hole between the hole and two opposed undercut sides.
3. A method of mounting a rail on a steel sleeper, which comprises installing the rail on the steel sleeper by inserting an insulated pad between the rail and the sleeper, the insulated pad being located in both longitudinal and transverse directions on the sleeper by lugs cooperating with holes in the sleeper, the rail being fastened to the track through the agency of a rail clip in accordance with Claim 1 or 2.
4. A rail clip in accordance with Claim 1 for mounting a rail on steel sleepers, substantially as hereinbefore described with reference to Figures 3, 4, 5 and 6 of the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (4)
1. A rail clip for mounting a rail on steel sleepers, which comprises a substantially rectangular block of insulating material, two or three sides of the block being undercut to fit the flange of a rail, and a hole for mounting the clip, the hole being unequal distances from the undercut sides, the distance between the mounting hole and at least one non-undercut side being sufficient to enable a rail to be lifted from a sleeper past the clip or lowered past the clip onto the sleeper, when the clip is oriented so that one of the said non-undercut sides is parallel to the edge of the rail flange.
2. A rail clip according to Claim 1, wherein locating lugs are provided on two sides of the hole between the hole and two opposed undercut sides.
3. A method of mounting a rail on a steel sleeper, which comprises installing the rail on the steel sleeper by inserting an insulated pad between the rail and the sleeper, the insulated pad being located in both longitudinal and transverse directions on the sleeper by lugs cooperating with holes in the sleeper, the rail being fastened to the track through the agency of a rail clip in accordance with Claim 1 or 2.
4. A rail clip in accordance with Claim 1 for mounting a rail on steel sleepers, substantially as hereinbefore described with reference to Figures 3, 4, 5 and 6 of the accompanying drawings.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA00771402A ZA771402B (en) | 1977-05-26 | 1977-03-08 | Improvements in or relating to rail clips |
GB9238/76A GB1587181A (en) | 1977-05-26 | 1977-05-26 | Rail clips |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9238/76A GB1587181A (en) | 1977-05-26 | 1977-05-26 | Rail clips |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1587181A true GB1587181A (en) | 1981-04-01 |
Family
ID=9868071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9238/76A Expired GB1587181A (en) | 1977-05-26 | 1977-05-26 | Rail clips |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1587181A (en) |
ZA (1) | ZA771402B (en) |
-
1977
- 1977-03-08 ZA ZA00771402A patent/ZA771402B/en unknown
- 1977-05-26 GB GB9238/76A patent/GB1587181A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ZA771402B (en) | 1978-07-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee | ||
PCPE | Delete 'patent ceased' from journal |
Free format text: 5107,PAGE 171 |
|
PCNP | Patent ceased through non-payment of renewal fee |