Title of Invention	RAIL BRACE
Abstract	The rail fastening of this invention relates to the top structure of a rail track and is designed to secure rails to rail supports such as sleepers, slabs, and so on. The rail fastening comprises an anchor firmly embedded in a reinforced-concrete sleeper and a cushion placed on the rail- supporting part between the anchor heads. Two spring clips with ends thereof engaging the supports of the anchor head through a tension controller have loops thereof resting on the clip pad to press the rail against the sleeper through an isolating rail insert. The isolating rail insert is an L- bar having a tab in the middle part thereof and a vertical flange located between the side edge of the rail foot and the supports of the anchor head. The inner wall of the anchor head base is straight in the area of contact with the isolating rail insert being an extension of the vertical surfaces of the supports of the anchor head. The outer wall of the anchor head base has pattern tapers, side walls are straight, the walls being joined at the corners along a radius. The engineering effect of this invention consists in making the rail fastening reliable in operation and using harder and more wear-resistance isolating rail inserts to prevent their rapid wear, particularly on curved sections of the track.

Title of Invention

RAIL BRACE

Abstract

The rail fastening of this invention relates to the top structure of a rail track and is designed to secure rails to rail supports such as sleepers, slabs, and so on. The rail fastening comprises an anchor firmly embedded in a reinforced-concrete sleeper and a cushion placed on the rail- supporting part between the anchor heads. Two spring clips with ends thereof engaging the supports of the anchor head through a tension controller have loops thereof resting on the clip pad to press the rail against the sleeper through an isolating rail insert. The isolating rail insert is an L- bar having a tab in the middle part thereof and a vertical flange located between the side edge of the rail foot and the supports of the anchor head. The inner wall of the anchor head base is straight in the area of contact with the isolating rail insert being an extension of the vertical surfaces of the supports of the anchor head. The outer wall of the anchor head base has pattern tapers, side walls are straight, the walls being joined at the corners along a radius. The engineering effect of this invention consists in making the rail fastening reliable in operation and using harder and more wear-resistance isolating rail inserts to prevent their rapid wear, particularly on curved sections of the track.

Full Text	PCT/Ru2005/000481 RAIL FASTENING FIELD OF THE INVENTION The rail fastening of this invention relates to the top structure of a railroad track and is designed to secure rails to reinforced-concrete, polymer-concrete or composite rail supports such as sleepers, beams, slabs, blocks, ground plates, and the like, and can be used on mainline railroads, including high-speed tracks, in tunnels, underground railroads, and approach railroads of industrial enterprises. STATE OF THE ART Known in the art is a rail fastening comprising a U-shaped anchor with a downwardly extending leg secured rigidly in a reinforced-concrete sleeper, spring clips, each connected to a respective end of the anchor through a clip tension controller, one branch of each clip being designed to engage the rail and the other branch engaging a baseplate fitted on the sleeper, a cushion placed under the rail, each end of the anchor having two hook-shaped supports spaced apart along the rail and embracing the controller, the surfaces of the supports engaging the tension controller following curves of two radii (Invention Certificate SU 1401095A1, E01B 9/00, August 7, 1988). The prior art rail fastening has the following drawbacks. The anchor is fabricated by casting, the casting technique requires the anchor to have a pattern taper. The base of the anchor head is of a diamond shape, pattern tapers are provided on both sides of the base. The inside surface of the anchor heads are virtually vertical flat surfaces formed by ribbed supports. These vertical surfaces come into contact with the vertical flange of an isolating rail insert and receive the lateral force from the end of the rail foot while operation. The joint formed by the inside surfaces of the diamond-shaped base of the (tapered) heads and the virtually flat vertical surfaces of the supports produce protrusions that, as a rule, are sharp and have casting burrs. When the rail fastening is assembled, the vertical flange of the isolating rail insert is located in both the area of the vertical support surfaces and the area of the inside surfaces of the (tapered) heads. In operation, the vertical and lateral loads cause the rail to sag and turn, in which case the end of the rail foot is in contact with the flange in both areas. For this reason, pressure applied by the lateral force causes the protrusion to dent the vertical flange of the rail pad, if the rail pad is made of a pliant material, or to crack the pad, if the pad is made of a harder and less pliant material. SUMMARY OF THE INVENTION The engineering effect of this invention is achieved by correcting the above drawbacks, in 2 particular, preventing damage caused by the prior art invention and, accordingly, ensuring reliable performance of the fastening, using harder and more wear-resistant isolating rail inserts and obviating their rapid wear, particularly on track curves where lateral forces applied by the wheel to the rail are much larger than they are on straight track sections and are virtually constant. This effect is achieved in a rail fastening comprising: an anchor having heads and downwardly extending legs rigidly embedded in a reinforced-concrete sleeper, each head thereof has two supports spaced apart along the rail and provided with lugs to engage the top surface of a sleeper, a rail cushion placed between the anchor heads on the sleeper part supporting the rail, two spring clips each having a straight portion and two rounded portions ,or loops, said spring clips are fitted on the anchor heads and have their ends interacting through a tension controller with the respective supports of the anchor head, the loops rest on the clip pad deposited on the sleeper and the straight portions press the rail against the sleeper through the isolating rail inserts, the isolating rail insert is designed as an L-bar having in the middle part thereof a tab positioned between the supports of the anchor head, the vertical flange of each isolating rail insert being located between the side edge of the rail foot and the supports of the anchor head to be joined to the base of the anchor head, the inner wall of the anchor head base in the area where it is joined to the isolating rail insert is made straight as an extension of the vertical surfaces of the supports, the outer wall of the anchor head base has pattern tapers, the side walls of the anchor head base being straight, and connection at the corners of the anchor head base walls following a radius. Fig. 1 is a general view of the rail fastening; Fig. 2 is a top view of Fig. 1; Fig. 3 is a view of the anchor with a lug (according to the closest prior art invention); Fig. 4 is a view of the anchor without a lug in the area of connection to the flange of the isolating rail insert (according to the present invention). PREFERRED EMBODIMENT OF THE INVENTION The rail fastening of this invention comprises an anchor 1 having heads and downwardly extending legs 2 fitted firmly in a reinforced-concrete sleeper 3. Each head of the anchor 1 has two supports 5 spaced apart from one another along a rail 4. Each head is provided with lugs 6 to be engaged with the top surface of the sleeper 3. A rail cushion 7 is placed on the rail supporting part of the sleeper 3 between the heads of the anchor 1. Two spring clips 8 are fitted on the heads of the 3 anchor 1 to have their ends engaging through a tension controller 9 the respective supports 5 of the head of the anchor 1. The clip 8 has a straight part and two loops. The loops rest on a clip pad 10 placed on the sleeper 3, and the straight part presses the rail 4 against the sleeper 3 through an isolating rail insert 11. The isolating rail insert 11 is an L-bar having a tab 12 in the middle part thereof to be positioned between the supports 5 of the head of the anchor 1. The vertical flange of the isolating rail insert 11 is placed between the side edge of the foot of the rail 4 and the supports 5 to be joined to a base 13 of the head of the anchor 1. The base 13 of the anchor head of the anchor 1 is symmetrical in one plane only. The inner wall 14 of the base 13 is actually straight, being an extension of the vertical surfaces of the supports 5. The outer wall 15 of the base 13 of the heads of the anchor 1 has pattern tapers 16 sloping away from the casting mold joint, the side walls of the base 13 are straight, and the side, outer and inner walls are joined along a radius of 4 to 7 mm. Pattern tapers may only be provided in an area projecting 8 to 10 mm to one side of the supports 5.on the inner wall of the base 13 of the anchor head. The fastening is assembled using the following method. A rubber rail cushion 7 is placed on the rail-supporting area of the sleeper 3. After the rail 4 has been laid, isolating rail inserts 11 are inserted between the side edges of the foot of the rail 4 and the supports 5, the tab 12 in the middle part of the rail pad being positioned between the supports 5 of the head of the anchor 1. The spring clip 8 is fitted on top of the head of the anchor 1, its straight part being placed on the isolating pad 11, and the mounting ends are positioned over the base 13 of the head of the anchor 1. Protective clip pads 10 are placed under the loops of the spring clip 8 in contact with the sleeper, the loops of the clip 8 resting on the surface of the pads 10. The tension controller 9 is brought into engagement with the hooks of the supports 5 and turned one or more facets forward to adjust the tension of the spring clip 8. Since the contact area 14 between the base 13 of the head of the anchor 1 and the vertical flange of the isolating rail insert 11 is actually straight, being an extension of the vertical surfaces of the supports 5, and there being no sharp lugs between the supports 5 and the base 13 of the anchor head 1, with a train wheel applying pressure to the rail, the lateral force does not cause denting or cracking of the vertical flange of the rail pad 10. Accordingly, rapid failure of the harder and wear-resistant isolating inserts 11 is prevented, particularly on curved sections of the track, where lateral forces directed from the wheel against the rail are actually constant and significantly larger than they are on straight sections of the track. 4 Claims What is claimed is: 1. In an intermediate rail fastening comprising an anchor having heads and downwardly extending legs, said anchor being firmly embedded in a reinforced-concrete sleeper, each head of said anchor having two supports spaced apart along the rail and lugs to engage the top surface of the sleeper; a rail cushion placed on the rail-supporting part of the sleeper between the anchor heads; two spring clips fitted on the anchor heads to have their ends engaging through a tension controller the respective supports of the anchor head, and their loops resting on the clip pad laid on the sleeper, and their straight parts pressing the rail against the sleeper through an isolating rail insert, said isolating rail insert being formed by an L-bar having in the middle part thereof a tab positioned between the supports of the anchor head, an improvement wherein the vertical flange of each isolating rail insert is placed between the side edge of the rail foot and the supports of the anchor head to engage the base of the anchor head, the inner wall of the base of the anchor head is straight in the area of contact with the isolating rail insert to serve as an extension of the vertical surfaces of the supports of the anchor head; the outer wall of the base of the anchor head has pattern tapers; the side walls of the base of the anchor head are straight, and the corners of the walls of the base are joined along a radius. The rail fastening of this invention relates to the top structure of a rail track and is designed to secure rails to rail supports such as sleepers, slabs, and so on. The rail fastening comprises an anchor firmly embedded in a reinforced-concrete sleeper and a cushion placed on the rail- supporting part between the anchor heads. Two spring clips with ends thereof engaging the supports of the anchor head through a tension controller have loops thereof resting on the clip pad to press the rail against the sleeper through an isolating rail insert. The isolating rail insert is an L- bar having a tab in the middle part thereof and a vertical flange located between the side edge of the rail foot and the supports of the anchor head. The inner wall of the anchor head base is straight in the area of contact with the isolating rail insert being an extension of the vertical surfaces of the supports of the anchor head. The outer wall of the anchor head base has pattern tapers, side walls are straight, the walls being joined at the corners along a radius. The engineering effect of this invention consists in making the rail fastening reliable in operation and using harder and more wear-resistance isolating rail inserts to prevent their rapid wear, particularly on curved sections of the track.

Full Text

PCT/Ru2005/000481
RAIL FASTENING
FIELD OF THE INVENTION
The rail fastening of this invention relates to the top structure of a railroad track and is
designed to secure rails to reinforced-concrete, polymer-concrete or composite rail supports such as
sleepers, beams, slabs, blocks, ground plates, and the like, and can be used on mainline railroads,
including high-speed tracks, in tunnels, underground railroads, and approach railroads of industrial
enterprises.
STATE OF THE ART
Known in the art is a rail fastening comprising a U-shaped anchor with a downwardly
extending leg secured rigidly in a reinforced-concrete sleeper, spring clips, each connected to a
respective end of the anchor through a clip tension controller, one branch of each clip being
designed to engage the rail and the other branch engaging a baseplate fitted on the sleeper, a
cushion placed under the rail, each end of the anchor having two hook-shaped supports spaced
apart along the rail and embracing the controller, the surfaces of the supports engaging the tension
controller following curves of two radii (Invention Certificate SU 1401095A1, E01B 9/00,
August 7, 1988).
The prior art rail fastening has the following drawbacks. The anchor is fabricated by casting,
the casting technique requires the anchor to have a pattern taper. The base of the anchor head is of
a diamond shape, pattern tapers are provided on both sides of the base. The inside surface of the
anchor heads are virtually vertical flat surfaces formed by ribbed supports. These vertical surfaces
come into contact with the vertical flange of an isolating rail insert and receive the lateral force
from the end of the rail foot while operation. The joint formed by the inside surfaces of the
diamond-shaped base of the (tapered) heads and the virtually flat vertical surfaces of the supports
produce protrusions that, as a rule, are sharp and have casting burrs. When the rail fastening is
assembled, the vertical flange of the isolating rail insert is located in both the area of the vertical
support surfaces and the area of the inside surfaces of the (tapered) heads. In operation, the vertical
and lateral loads cause the rail to sag and turn, in which case the end of the rail foot is in contact
with the flange in both areas. For this reason, pressure applied by the lateral force causes the
protrusion to dent the vertical flange of the rail pad, if the rail pad is made of a pliant material, or to
crack the pad, if the pad is made of a harder and less pliant material.
SUMMARY OF THE INVENTION
The engineering effect of this invention is achieved by correcting the above drawbacks, in

2
particular, preventing damage caused by the prior art invention and, accordingly, ensuring reliable
performance of the fastening, using harder and more wear-resistant isolating rail inserts and
obviating their rapid wear, particularly on track curves where lateral forces applied by the wheel to
the rail are much larger than they are on straight track sections and are virtually constant.
This effect is achieved in a rail fastening comprising:
an anchor having heads and downwardly extending legs rigidly embedded in a reinforced-concrete
sleeper, each head thereof has two supports spaced apart along the rail and provided with lugs to
engage the top surface of a sleeper,
a rail cushion placed between the anchor heads on the sleeper part supporting the rail,
two spring clips each having a straight portion and two rounded portions ,or loops, said spring clips
are fitted on the anchor heads and have their ends interacting through a tension controller with the
respective supports of the anchor head, the loops rest on the clip pad deposited on the sleeper and
the straight portions press the rail against the sleeper through the isolating rail inserts,
the isolating rail insert is designed as an L-bar having in the middle part thereof a tab positioned
between the supports of the anchor head, the vertical flange of each isolating rail insert being
located between the side edge of the rail foot and the supports of the anchor head to be joined to
the base of the anchor head,
the inner wall of the anchor head base in the area where it is joined to the isolating rail insert is
made straight as an extension of the vertical surfaces of the supports, the outer wall of the anchor
head base has pattern tapers, the side walls of the anchor head base being straight, and connection
at the corners of the anchor head base walls following a radius.
Fig. 1 is a general view of the rail fastening;
Fig. 2 is a top view of Fig. 1;
Fig. 3 is a view of the anchor with a lug (according to the closest prior art invention);
Fig. 4 is a view of the anchor without a lug in the area of connection to the flange of the
isolating rail insert (according to the present invention).
PREFERRED EMBODIMENT OF THE INVENTION
The rail fastening of this invention comprises an anchor 1 having heads and downwardly
extending legs 2 fitted firmly in a reinforced-concrete sleeper 3. Each head of the anchor 1 has two
supports 5 spaced apart from one another along a rail 4. Each head is provided with lugs 6 to be
engaged with the top surface of the sleeper 3. A rail cushion 7 is placed on the rail supporting part
of the sleeper 3 between the heads of the anchor 1. Two spring clips 8 are fitted on the heads of the

3
anchor 1 to have their ends engaging through a tension controller 9 the respective supports 5 of the
head of the anchor 1. The clip 8 has a straight part and two loops. The loops rest on a clip pad 10
placed on the sleeper 3, and the straight part presses the rail 4 against the sleeper 3 through an
isolating rail insert 11. The isolating rail insert 11 is an L-bar having a tab 12 in the middle part
thereof to be positioned between the supports 5 of the head of the anchor 1. The vertical flange of
the isolating rail insert 11 is placed between the side edge of the foot of the rail 4 and the supports
5 to be joined to a base 13 of the head of the anchor 1. The base 13 of the anchor head of the
anchor 1 is symmetrical in one plane only. The inner wall 14 of the base 13 is actually straight,
being an extension of the vertical surfaces of the supports 5. The outer wall 15 of the base 13 of the
heads of the anchor 1 has pattern tapers 16 sloping away from the casting mold joint, the side walls
of the base 13 are straight, and the side, outer and inner walls are joined along a radius of 4 to
7 mm.
Pattern tapers may only be provided in an area projecting 8 to 10 mm to one side of the supports
5.on the inner wall of the base 13 of the anchor head.
The fastening is assembled using the following method. A rubber rail cushion 7 is placed on
the rail-supporting area of the sleeper 3. After the rail 4 has been laid, isolating rail inserts 11 are
inserted between the side edges of the foot of the rail 4 and the supports 5, the tab 12 in the middle
part of the rail pad being positioned between the supports 5 of the head of the anchor 1. The spring
clip 8 is fitted on top of the head of the anchor 1, its straight part being placed on the isolating pad
11, and the mounting ends are positioned over the base 13 of the head of the anchor 1. Protective
clip pads 10 are placed under the loops of the spring clip 8 in contact with the sleeper, the loops of
the clip 8 resting on the surface of the pads 10. The tension controller 9 is brought into engagement
with the hooks of the supports 5 and turned one or more facets forward to adjust the tension of the
spring clip 8.
Since the contact area 14 between the base 13 of the head of the anchor 1 and the vertical
flange of the isolating rail insert 11 is actually straight, being an extension of the vertical surfaces
of the supports 5, and there being no sharp lugs between the supports 5 and the base 13 of the
anchor head 1, with a train wheel applying pressure to the rail, the lateral force does not cause
denting or cracking of the vertical flange of the rail pad 10. Accordingly, rapid failure of the harder
and wear-resistant isolating inserts 11 is prevented, particularly on curved sections of the track,
where lateral forces directed from the wheel against the rail are actually constant and significantly
larger than they are on straight sections of the track.

4
Claims
What is claimed is:
1. In an intermediate rail fastening comprising an anchor having heads and downwardly
extending legs, said anchor being firmly embedded in a reinforced-concrete sleeper, each head of
said anchor having two supports spaced apart along the rail and lugs to engage the top surface of
the sleeper; a rail cushion placed on the rail-supporting part of the sleeper between the anchor
heads; two spring clips fitted on the anchor heads to have their ends engaging through a tension
controller the respective supports of the anchor head, and their loops resting on the clip pad laid
on the sleeper, and their straight parts pressing the rail against the sleeper through an isolating rail
insert, said isolating rail insert being formed by an L-bar having in the middle part thereof a tab
positioned between the supports of the anchor head, an improvement wherein the vertical flange of
each isolating rail insert is placed between the side edge of the rail foot and the supports of the
anchor head to engage the base of the anchor head, the inner wall of the base of the anchor head is
straight in the area of contact with the isolating rail insert to serve as an extension of the vertical
surfaces of the supports of the anchor head; the outer wall of the base of the anchor head has
pattern tapers; the side walls of the base of the anchor head are straight, and the corners of the
walls of the base are joined along a radius.

The rail fastening of this invention relates to the top structure of a rail track and is designed
to secure rails to rail supports such as sleepers, slabs, and so on. The rail fastening comprises an
anchor firmly embedded in a reinforced-concrete sleeper and a cushion placed on the rail-
supporting part between the anchor heads. Two spring clips with ends thereof engaging the
supports of the anchor head through a tension controller have loops thereof resting on the clip pad
to press the rail against the sleeper through an isolating rail insert. The isolating rail insert is an L-
bar having a tab in the middle part thereof and a vertical flange located between the side edge of
the rail foot and the supports of the anchor head. The inner wall of the anchor head base is straight
in the area of contact with the isolating rail insert being an extension of the vertical surfaces of the
supports of the anchor head. The outer wall of the anchor head base has pattern tapers, side walls
are straight, the walls being joined at the corners along a radius. The engineering effect of this
invention consists in making the rail fastening reliable in operation and using harder and more
wear-resistance isolating rail inserts to prevent their rapid wear, particularly on curved sections of
the track.

RAIL BRACE

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