CA1076082A - Rail fastener - Google Patents
Rail fastenerInfo
- Publication number
- CA1076082A CA1076082A CA285,789A CA285789A CA1076082A CA 1076082 A CA1076082 A CA 1076082A CA 285789 A CA285789 A CA 285789A CA 1076082 A CA1076082 A CA 1076082A
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- CA
- Canada
- Prior art keywords
- rail
- fastener according
- anchor
- spring clip
- rail fastener
- 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.)
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Abstract
ABSTRACT OF THE DISCLOSURE
A rail fastener includes an anchor member fixed atop the crosstie and removably retaining a spring clip having a pair of adjacent parallel legs insertable within said anchor member. The improved spring clip, generally "B" shaped, is provided with a loop member joining the two legs and having opposite portions respectively engaging the rail base flange and anchor member.
A rail fastener includes an anchor member fixed atop the crosstie and removably retaining a spring clip having a pair of adjacent parallel legs insertable within said anchor member. The improved spring clip, generally "B" shaped, is provided with a loop member joining the two legs and having opposite portions respectively engaging the rail base flange and anchor member.
Description
This invention relates generally to rallway appll-ances, and more particularly, to an improved rail fastener for securing railway rails to cros~ties constructed either of concrete, plastic, metal or wood.
The present rail fastener lncludes an elastlc metal c.llp formed from steel rod or bar stock to provlde a unitary member adapted to cooperate with an anchor or shoulder member fixably lnstalled adjacent the rail base flange to ; removably secure the rall clip in a position retalning a .. portion of the clip in an overlying and biasing manner upon the upper surface of one of the ral.l base flanqes. By this r arrangement the spring clip and anchor member combine to reduce , .
longitudinal creeping of the rail as well as inhlbit pumping of the crosstie into the ballast as normally caused by wave motlon of the rail due to passage of traffic thereover.
Additionally, tendency of the rail to overturn is resisted .
.~ to a greater degree than with many earlier types of cllps.
-~ Many attempts have been made to produce spring cllps intended to accomplish the above related ob~ectives. Examples , . .
of earlier efforts in this area are found in Patent No.
3,004,716 issued October 17, 1961 and 3,297,253 issued January 10, 1967. In the examples of the referenced prior art, spring clips are disclosed having an irregu-ar configuration from one end of the rod stock to the other and thereof, such that a plurallty of compound curves must be formed in order to produce the sprlng clip and the resultant clip may on.ly be applied in one direction ad~acent each rail base flange. By the present arrangement, on the other hand, an improved spring 107608;Z
cllp is produced which is symmetrical ~bout both sldes of center line p~ssing between its two parallel mountlng legs, and although a curved loop member ls lncluded in the lnstant spring clip, th~s loop member deflnes a slmple curve rather than a complex compound curve as found in many of the prior art devices of thls type. A slgnl~lcant advantage of the present arranqement will be obvious when considering the relative ease of manufacture thereof and also the more positlve control of the resultant clam~ing or biasing action that ls afforded by the instant device in vlew of its vastly simpler sy~metrical construction. The increased downward clamping forcè as pro-duced by the instant clip having two mounting legs offers a ;~ decidedly significant improvement over the previously used fasteners having but a sing~e leg.
Accordlngly, one of the primary objects of the ~i present invention is to provlde an improved rail fastener including a spring cllp of symmetrlcal construction and sub-stantially defining a "B" shaped configuration.
Another object of the present invention is to provide an improved rail fastener including a spring clip formed from a unitary bar or rod stock and including a pair of adjacent parallel mounting legs having distal portions pro~ectlng in the same direction and substantially confined within an en-circling loop member joined to the ends of the mounting legs.
Still another object of the present invention is to provide an improved rail fastener including a spring clip of unitary bar or rod constructlon havlng a pair of parallel and adjacent mounting legs removably insertable within one or more transverse openings provlded ln an anchor member affixed to a crosstie ad~acent a rail base flange.
Wlth these and other ob~ects in view whlch will more readlly appear as the nature of the invention ls better under-stood, the invention consists ln the novel construction, combination and arrangements of parts hereinafter more fully descrlbed, illustrated and claimed.
Preferred and practical embodiments of the lnvention are shown in the accompanying drawings, in which:
FIG. 1 is a perspective view of a spring clip according to the present invention.
FIG. 2 is a side elevation, partly in section, of the rait fastener of the present invention as applled to a concrete crosstie.
FIG. 3 is a view simitar to FIG. 2 and lllustrates an anchor member of alternatlve construction.
FIG. 4 is an end elevation, partly in section, of a rait fastener according to the present invention as applied to a wood cro3stie.
FIG. 5 is a perspective view of a modification of the spring ctip of the present invention.
FIG. 6 is a side view, partty in section, and ittustrates the spring clip of FIG. S as instatled with an anchor member imbedded in a concrete crosstie.
FIG. 7 is a view similar to FIG. 6 and iltustrates a modified form of anchor member.
FIG. 8 is a top plan view of a modificatlon of the spring clip of the present invention.
1076~8Z
FIG. 9 ls an end elevatlon of the spring cllp Of FIG. 8.
- FIG. 10 is a top plan vlew of another form of spring clip of the present invention.
FIG. ll ls a vertical sectlonal vlew taken along the line ll-ll of FIG. 10.
FIG. 12 ls a side elevation, partly in section, ~" slmilar to the srrangement shown ln FIG. 2, but with the anchor member coated with insulation.
~ Similar reference characters designate corresponding - parts throughout the several views of the drawings.
Referrlng now to the drawings, particularly FIGS.
1-3, the present invention will be seen to include a spring clip A which is adapted to be removably secured in lts use ; posltion by means of an anchor member 1 suitably fixed to a crosstie 2 and including one or more attachment grooves or openings 3 disposed adjacent the edge 4 of a rail base flange F. The spring clip A as shown most clearly ln FIG. 1 comprises an el~stic device formed from a single piece of metal and preferably is produced ~rom steel rod Or bar stock.
The spring clip A as shown in the embodiment of FIGS. 1-4 is produced from rod stock and includes a pair of adjacent and parallel straight mounting legs 5-5 termin-ating in distal portions 6-6 pro~ecting in the same direction.
The balance of the spring clip A comprises a loop member 7 which will be seen to surround or encompass the descrlbed mounting legs 5-5 and includes a curved cross-over arm 8 ~oined at its opposlte ends by an lnslde rall bearlng portion 9 and outside tle snchor portlon 10 respectlvely, which latter two portions are ln turn connected to the mountlng legs 5 by means of end connectlng portlons 11-11. The above described arrangement of the various portions of the r spring clip A approxlmately deflnes a "B" shaped conflguration and except for the cross-over arm 8, ls made up of a plurallty of straight sections, each disposed normal to the next adjacent section. The cross-over arm 8, on the other hand, comprises an arched element formed with a slmple curve for reasons which will become obvious hereinafter.
- An important feature to be noted regardlng the subject sprlng clip A ls that the construction thereof -defines a symmetrlcal configuration along elther side of an axls passing parallel to and between the two mounting legs-5-5. Such an arrangement facllitates the manufacture of the spring clip A by removing the requirement for more specialized dies and forming apparatus and subsequently facilitates the use of the spring clip as will be described later on.
The anchor means for retainlng the spring clip A
in its use position of FIGS. 2-4 may comprise any one of several types of elements. In the case of a plast~c or concrete CrOSStie 2 as shown in FIGS. 2 and 3, it ls possible to provide a cast anchor member 1 or la which may be imbedded within the composition of the crosstie at the time of its manufacture. 1 and la reflect alternate forms of tie anchor members suitable for use with plastic or concrete crossties, and each lncludes a shank 12 adapted to be fully i~bedded within the composition of the crosstie and which supports, in a fixed manner, ad~acent the upper surface 13 of the cross-tie, a head generally deslgnated 14. Each head lncludes a cap ~5 disposed ln an elevated manner above a larger platform 16, which platform includes an lnner surface 17 selected to establish the track gauge upon the subsequent placement of a rail flange edge 4 ad~acent thereto. Pro-jecting outwardly from the cap 15, the platform 16 termlnates in an outer surface 19.
- As previously mentioned, the anchor member heads 14 are provided with one or more transverse attachment means in the form of a groove or opening 3 for removably retaining the spring clip A in its use position and the anchor tie member 1 of FIG. 2 will be seen to include a pair of trans-verse grooves 3-3 separated by means of a web 20. A feature to be noted at this point is that the inner periphery of the web 20 and cap 15 in the upper area of the seat of the groove 3 is provided with a curved bearing surface 3a con-gruent with the curved circumference of the rod stock forming the mounting legs 5-5 of the spring clip A, thereby providing a mating fit and positive retention means en-compassing approximately 90- of the clrcumference of the clip mounting .le~s when they have been axially inserted lnto the grooves 3-3 by any suitable means such as a maul.
Additionally, the terminal pOrtiOnS 18 of the cap 15 defining the grooves 3-3 extend downwardly to restrict the outer portions of the grooves to a height less than the diameter of the clip stock ln order to ensure retention of the clip legs 5 in a fully seated posltion against the bearlng surface 3a.
, When the spring cllp is fully seated as in FIG. 2 of the drawings it will be understood that the inside rail bearing portion 9 will be deflected upwardly against a tremendous resilient force as transmitted by the cross-over arm 8 with the result that a significant downward biasing action will be offered by the entire length of the under-surface of the rail bearing portiOn 9 against the top surface 2l of the rail base flange F, while the top surface 22 of the outer portion of the platform l6 serves as an abutment for the outside tie anchor portion 10 of the spring clip to limit downward displacement of the outside portion lO
when both of the mounting legs 5-5 are seated within the tie anchor member attachment grooves 3-3.
The modified anchor member la illustrated in FIG. 3 of the drawings includes a slngle elongated trans-verse opening 3' in the cap 15 thereof, which opening 3' is oval in configuration and includes a major axis equal to no less than twice the diameter of one of the mounting legs 5 and a minor axis equal to no less than the diameter of one of the mountlng legs 5, such that when the two legs are simultaneously urged into the attachment opening 3' as shown in FIG. 3, there will be no free play. Since use of the anchor member la means that the two mounting legs 5-5 will be drawn together and the outside-most mounting leg will be elevated above the longitudinal axis of the lnside mounting leg 5, lt will follow that the outside tie anchor portion 10 of the spring clip A needs to be retained at a more elevated position than that as shown in the embodiment of FIG. 2 in order to obtain the same maximum force or biasing action between the undersurface of the inside rail bearing portion 9 and the top surface 21 of the rail base flange F, and accordingly, it will be obqerved that the top surface 22a of the platform ~6 in the embodiment of FIG. 3 ls dis-posed at the same elevation as the bottom-most portion of t~e transverse openlng 3'.
When utilizing the spring clips of the present in-vention in combination with a wood crosstie 2a as shown in FIG. 4 of the drawlngs, the anchor means for securing and retain~ng the clip in its use position may most readily be provided by means of a base plate lb comprising a steel plate completely underlying the rail base flanges F and extending significantly beyond the two edges 4-4 of the rail base to provide the platform portions 16'. The base plate lb is provided with a rib 23 immediately adjacent each rail base flange edge 4 and intermediate this edge and the base plate platform 16'. The rib 23 comprises an up-wardly curved deformation in the base plate, resulting in the transverse attachment gro~ve or opening 24 being formed beneath its undersurface and the upper surface 25 of the crosstie. It will thus follow that this attachment means 24 performs in a manner similar to the grooves 3-3 of the anchor member 1 and the opening 3' of the anchor member la and is adapted to receive the two mounting legs 5-5 of the spring clip A in the juxtaposed manner illustrated in FIG. 4.
Qulte obviously the dimensions of the rod stock forming the spring clip A is preferably selected to ensure the point contact as shown ln this figure of the drawings, thus ensuring :` ~07608Z
a rigid securlng of the clip legs when axlally ln~erted lnto the openlng 24.
FIG. 5 of the drawings illustrates a modlfled sprlng clip B havlng a general configuratlon similar to that of the spring clip A wlth the exceptlon that this latter sprlng clip is formed from rectangular or square bar stock lnstead of the cy.lindrical rod stock of the spring clip A. Accordingly, it will be appreclated that the clip B contains the same described features as the cllp A, including the palr of ad~acent parallel mounting legs 5'-5' having the distal portions 6' projecting in the same direction and enclosed by the loop member 7' which in turn comprises the curved cross-over arm 8', parallel inslde rail bearing portion 9' and outside tie anchor portion 10', which in turn are respectively connected to the two mounting legs by means of the end connecting portions 11'. As in the case of the earller described sprlng clip A, the mounting legs and connectlng portions and inside and outside pOrtiOnS of the spring clip B are normally disposed in a common horizontal plane when in the at rest position of FIG. 5 prior to application to a suitable anchor member in a track installation and likewise the simple curved configuration of the cross-over arm 8' extends upwardly and perpendicular to the balance of the spring clip.
The spring clip B, like the spring clip A, may be utilized in combination with either a concrete or plastlc crosstle as well as with a wooden crosstie. In the case of a wood tie 2a the clip B is lnstalled using the same type of base plate lb as shown in the embodiment of FIG. 4 of the drawings, whi.le when installed in combination with a plastic ~07608Z
or concrete tie the cast anchor member lc of FIG. 6 or ld of FIG. 7 is employed. The tie anchor member lc ls sub-stantially similar to the anchor member 1 of FIG. 2 wlth the exception that the cap 15a and central web 20a are formed with straight walled portlons to provide the attachment grooves or openings 26-26 having a polygona.t cross-section providing a close matlng fit with the rectangu.tar CrosS-SeCtiOn of the bar stock forming the spring cllp B. Similarly, in the embodiment of FIG. 7 of the drawings the transverse opening 27 of the anchor member td is formed with a rectangular configuration to accept the two mounting legs 5'-5' of the spring clip B with a close mating flt.
As is well known in the rail fastener art, an insu.late~ installation may be provided by including a suitable tie pad 28 between the undersurface of the rail base and the upper surface of the crosstie and this tie pad may be combined with an appropriate insulated clip 29 dis-posed between the spring clip portion 9 and the upper surface 2l of the rail base flange and extending downwardly to separate the rail edge 4 from the anchor member as shown in FIG. 7 of the drawings.
The spring clip C disclosed in FIGS. 8 and 9 of the drawings comprlses a further modification and is preferably constructed of rod stock and wil.l be seen to include the same arrangement of a pair of adjacent and parallel mounting legs 5"-5", each having distal portions 6" projecting in the same direction and which are connected by the loop member 7"
comprising in turn the inside rail bearing portion 9" and outside tie anchor engaging portion 10" which latter portlons -lO-, are ~oined to the mounting legs by means of the end connecting pOrtiOnS 11". The loop member 7" will be noted to include a cross-over arm portiOn as do the other described embodiments and although not specifically iden-tified in Fig. 8, it will be understood this CroSS-OVer arm comprises the centr~l-most pOrtiOn of the loop member 7" in the area ad~acent the leg ends 6"-6" and, like the remaining embodiments, extends in a d$rection perpendicular to the running length of the rail base flange. In this arrangement the entire loop member 7" is preferably disposed in a single plane when in the at rest condition with the two mounting legs 5" disposed in a curved and slightly offset manner as shown most clearly in PIG. 9 of the drawings, which con-figuration facilitates the initial entry of the distal leg portions 6'1 into the attaclument grooves or openings of the selected anchor member. It will be appreciated that either of the shoulder or anchor members 1, la or lb may be used in combination with the spring clip C to provide a rail fastener installation.
The spring clip C itlustrated in FIGS. 10 and 11 may likewise be utilized with either the tie plate form of anchor member or one of the disclosed cast-in-tie forms of shoulder or anchor members and is constructed in a manner generally similar to the clips A & B. The mounting legs 52-52 are preferably slightly inclined upwardly from the end connecting portions 11 and the distal portions 6 thereof ex-tend substantlall~ beyond the vertical plane of the cross-over arm 8. ~o .acilitate insertion of the legs 52 into the openings 26a on either side of the central web 20b of the shoulder or anchor member le, each distal portlon 6a ls provided with a chamfer 27 as shown in FIG. 10.
To lnsure a fully insulated rall fastener assembly any one of the embedded shoulder or anchor members may be coated or covered with any sultable insulating material such as ceramic, epoxy or urethane prior to casting within the crosstie. Such an arrangement is shown in FIG. 12 whereln it will be seen that the shank 12 and platform 16 of the member le are thusly encapsulated, as at P.
The present rail fastener lncludes an elastlc metal c.llp formed from steel rod or bar stock to provlde a unitary member adapted to cooperate with an anchor or shoulder member fixably lnstalled adjacent the rail base flange to ; removably secure the rall clip in a position retalning a .. portion of the clip in an overlying and biasing manner upon the upper surface of one of the ral.l base flanqes. By this r arrangement the spring clip and anchor member combine to reduce , .
longitudinal creeping of the rail as well as inhlbit pumping of the crosstie into the ballast as normally caused by wave motlon of the rail due to passage of traffic thereover.
Additionally, tendency of the rail to overturn is resisted .
.~ to a greater degree than with many earlier types of cllps.
-~ Many attempts have been made to produce spring cllps intended to accomplish the above related ob~ectives. Examples , . .
of earlier efforts in this area are found in Patent No.
3,004,716 issued October 17, 1961 and 3,297,253 issued January 10, 1967. In the examples of the referenced prior art, spring clips are disclosed having an irregu-ar configuration from one end of the rod stock to the other and thereof, such that a plurallty of compound curves must be formed in order to produce the sprlng clip and the resultant clip may on.ly be applied in one direction ad~acent each rail base flange. By the present arrangement, on the other hand, an improved spring 107608;Z
cllp is produced which is symmetrical ~bout both sldes of center line p~ssing between its two parallel mountlng legs, and although a curved loop member ls lncluded in the lnstant spring clip, th~s loop member deflnes a slmple curve rather than a complex compound curve as found in many of the prior art devices of thls type. A slgnl~lcant advantage of the present arranqement will be obvious when considering the relative ease of manufacture thereof and also the more positlve control of the resultant clam~ing or biasing action that ls afforded by the instant device in vlew of its vastly simpler sy~metrical construction. The increased downward clamping forcè as pro-duced by the instant clip having two mounting legs offers a ;~ decidedly significant improvement over the previously used fasteners having but a sing~e leg.
Accordlngly, one of the primary objects of the ~i present invention is to provlde an improved rail fastener including a spring cllp of symmetrlcal construction and sub-stantially defining a "B" shaped configuration.
Another object of the present invention is to provide an improved rail fastener including a spring clip formed from a unitary bar or rod stock and including a pair of adjacent parallel mounting legs having distal portions pro~ectlng in the same direction and substantially confined within an en-circling loop member joined to the ends of the mounting legs.
Still another object of the present invention is to provide an improved rail fastener including a spring clip of unitary bar or rod constructlon havlng a pair of parallel and adjacent mounting legs removably insertable within one or more transverse openings provlded ln an anchor member affixed to a crosstie ad~acent a rail base flange.
Wlth these and other ob~ects in view whlch will more readlly appear as the nature of the invention ls better under-stood, the invention consists ln the novel construction, combination and arrangements of parts hereinafter more fully descrlbed, illustrated and claimed.
Preferred and practical embodiments of the lnvention are shown in the accompanying drawings, in which:
FIG. 1 is a perspective view of a spring clip according to the present invention.
FIG. 2 is a side elevation, partly in section, of the rait fastener of the present invention as applled to a concrete crosstie.
FIG. 3 is a view simitar to FIG. 2 and lllustrates an anchor member of alternatlve construction.
FIG. 4 is an end elevation, partly in section, of a rait fastener according to the present invention as applied to a wood cro3stie.
FIG. 5 is a perspective view of a modification of the spring ctip of the present invention.
FIG. 6 is a side view, partty in section, and ittustrates the spring clip of FIG. S as instatled with an anchor member imbedded in a concrete crosstie.
FIG. 7 is a view similar to FIG. 6 and iltustrates a modified form of anchor member.
FIG. 8 is a top plan view of a modificatlon of the spring clip of the present invention.
1076~8Z
FIG. 9 ls an end elevatlon of the spring cllp Of FIG. 8.
- FIG. 10 is a top plan vlew of another form of spring clip of the present invention.
FIG. ll ls a vertical sectlonal vlew taken along the line ll-ll of FIG. 10.
FIG. 12 ls a side elevation, partly in section, ~" slmilar to the srrangement shown ln FIG. 2, but with the anchor member coated with insulation.
~ Similar reference characters designate corresponding - parts throughout the several views of the drawings.
Referrlng now to the drawings, particularly FIGS.
1-3, the present invention will be seen to include a spring clip A which is adapted to be removably secured in lts use ; posltion by means of an anchor member 1 suitably fixed to a crosstie 2 and including one or more attachment grooves or openings 3 disposed adjacent the edge 4 of a rail base flange F. The spring clip A as shown most clearly ln FIG. 1 comprises an el~stic device formed from a single piece of metal and preferably is produced ~rom steel rod Or bar stock.
The spring clip A as shown in the embodiment of FIGS. 1-4 is produced from rod stock and includes a pair of adjacent and parallel straight mounting legs 5-5 termin-ating in distal portions 6-6 pro~ecting in the same direction.
The balance of the spring clip A comprises a loop member 7 which will be seen to surround or encompass the descrlbed mounting legs 5-5 and includes a curved cross-over arm 8 ~oined at its opposlte ends by an lnslde rall bearlng portion 9 and outside tle snchor portlon 10 respectlvely, which latter two portions are ln turn connected to the mountlng legs 5 by means of end connectlng portlons 11-11. The above described arrangement of the various portions of the r spring clip A approxlmately deflnes a "B" shaped conflguration and except for the cross-over arm 8, ls made up of a plurallty of straight sections, each disposed normal to the next adjacent section. The cross-over arm 8, on the other hand, comprises an arched element formed with a slmple curve for reasons which will become obvious hereinafter.
- An important feature to be noted regardlng the subject sprlng clip A ls that the construction thereof -defines a symmetrlcal configuration along elther side of an axls passing parallel to and between the two mounting legs-5-5. Such an arrangement facllitates the manufacture of the spring clip A by removing the requirement for more specialized dies and forming apparatus and subsequently facilitates the use of the spring clip as will be described later on.
The anchor means for retainlng the spring clip A
in its use position of FIGS. 2-4 may comprise any one of several types of elements. In the case of a plast~c or concrete CrOSStie 2 as shown in FIGS. 2 and 3, it ls possible to provide a cast anchor member 1 or la which may be imbedded within the composition of the crosstie at the time of its manufacture. 1 and la reflect alternate forms of tie anchor members suitable for use with plastic or concrete crossties, and each lncludes a shank 12 adapted to be fully i~bedded within the composition of the crosstie and which supports, in a fixed manner, ad~acent the upper surface 13 of the cross-tie, a head generally deslgnated 14. Each head lncludes a cap ~5 disposed ln an elevated manner above a larger platform 16, which platform includes an lnner surface 17 selected to establish the track gauge upon the subsequent placement of a rail flange edge 4 ad~acent thereto. Pro-jecting outwardly from the cap 15, the platform 16 termlnates in an outer surface 19.
- As previously mentioned, the anchor member heads 14 are provided with one or more transverse attachment means in the form of a groove or opening 3 for removably retaining the spring clip A in its use position and the anchor tie member 1 of FIG. 2 will be seen to include a pair of trans-verse grooves 3-3 separated by means of a web 20. A feature to be noted at this point is that the inner periphery of the web 20 and cap 15 in the upper area of the seat of the groove 3 is provided with a curved bearing surface 3a con-gruent with the curved circumference of the rod stock forming the mounting legs 5-5 of the spring clip A, thereby providing a mating fit and positive retention means en-compassing approximately 90- of the clrcumference of the clip mounting .le~s when they have been axially inserted lnto the grooves 3-3 by any suitable means such as a maul.
Additionally, the terminal pOrtiOnS 18 of the cap 15 defining the grooves 3-3 extend downwardly to restrict the outer portions of the grooves to a height less than the diameter of the clip stock ln order to ensure retention of the clip legs 5 in a fully seated posltion against the bearlng surface 3a.
, When the spring cllp is fully seated as in FIG. 2 of the drawings it will be understood that the inside rail bearing portion 9 will be deflected upwardly against a tremendous resilient force as transmitted by the cross-over arm 8 with the result that a significant downward biasing action will be offered by the entire length of the under-surface of the rail bearing portiOn 9 against the top surface 2l of the rail base flange F, while the top surface 22 of the outer portion of the platform l6 serves as an abutment for the outside tie anchor portion 10 of the spring clip to limit downward displacement of the outside portion lO
when both of the mounting legs 5-5 are seated within the tie anchor member attachment grooves 3-3.
The modified anchor member la illustrated in FIG. 3 of the drawings includes a slngle elongated trans-verse opening 3' in the cap 15 thereof, which opening 3' is oval in configuration and includes a major axis equal to no less than twice the diameter of one of the mounting legs 5 and a minor axis equal to no less than the diameter of one of the mountlng legs 5, such that when the two legs are simultaneously urged into the attachment opening 3' as shown in FIG. 3, there will be no free play. Since use of the anchor member la means that the two mounting legs 5-5 will be drawn together and the outside-most mounting leg will be elevated above the longitudinal axis of the lnside mounting leg 5, lt will follow that the outside tie anchor portion 10 of the spring clip A needs to be retained at a more elevated position than that as shown in the embodiment of FIG. 2 in order to obtain the same maximum force or biasing action between the undersurface of the inside rail bearing portion 9 and the top surface 21 of the rail base flange F, and accordingly, it will be obqerved that the top surface 22a of the platform ~6 in the embodiment of FIG. 3 ls dis-posed at the same elevation as the bottom-most portion of t~e transverse openlng 3'.
When utilizing the spring clips of the present in-vention in combination with a wood crosstie 2a as shown in FIG. 4 of the drawlngs, the anchor means for securing and retain~ng the clip in its use position may most readily be provided by means of a base plate lb comprising a steel plate completely underlying the rail base flanges F and extending significantly beyond the two edges 4-4 of the rail base to provide the platform portions 16'. The base plate lb is provided with a rib 23 immediately adjacent each rail base flange edge 4 and intermediate this edge and the base plate platform 16'. The rib 23 comprises an up-wardly curved deformation in the base plate, resulting in the transverse attachment gro~ve or opening 24 being formed beneath its undersurface and the upper surface 25 of the crosstie. It will thus follow that this attachment means 24 performs in a manner similar to the grooves 3-3 of the anchor member 1 and the opening 3' of the anchor member la and is adapted to receive the two mounting legs 5-5 of the spring clip A in the juxtaposed manner illustrated in FIG. 4.
Qulte obviously the dimensions of the rod stock forming the spring clip A is preferably selected to ensure the point contact as shown ln this figure of the drawings, thus ensuring :` ~07608Z
a rigid securlng of the clip legs when axlally ln~erted lnto the openlng 24.
FIG. 5 of the drawings illustrates a modlfled sprlng clip B havlng a general configuratlon similar to that of the spring clip A wlth the exceptlon that this latter sprlng clip is formed from rectangular or square bar stock lnstead of the cy.lindrical rod stock of the spring clip A. Accordingly, it will be appreclated that the clip B contains the same described features as the cllp A, including the palr of ad~acent parallel mounting legs 5'-5' having the distal portions 6' projecting in the same direction and enclosed by the loop member 7' which in turn comprises the curved cross-over arm 8', parallel inslde rail bearing portion 9' and outside tie anchor portion 10', which in turn are respectively connected to the two mounting legs by means of the end connecting portions 11'. As in the case of the earller described sprlng clip A, the mounting legs and connectlng portions and inside and outside pOrtiOnS of the spring clip B are normally disposed in a common horizontal plane when in the at rest position of FIG. 5 prior to application to a suitable anchor member in a track installation and likewise the simple curved configuration of the cross-over arm 8' extends upwardly and perpendicular to the balance of the spring clip.
The spring clip B, like the spring clip A, may be utilized in combination with either a concrete or plastlc crosstle as well as with a wooden crosstie. In the case of a wood tie 2a the clip B is lnstalled using the same type of base plate lb as shown in the embodiment of FIG. 4 of the drawings, whi.le when installed in combination with a plastic ~07608Z
or concrete tie the cast anchor member lc of FIG. 6 or ld of FIG. 7 is employed. The tie anchor member lc ls sub-stantially similar to the anchor member 1 of FIG. 2 wlth the exception that the cap 15a and central web 20a are formed with straight walled portlons to provide the attachment grooves or openings 26-26 having a polygona.t cross-section providing a close matlng fit with the rectangu.tar CrosS-SeCtiOn of the bar stock forming the spring cllp B. Similarly, in the embodiment of FIG. 7 of the drawings the transverse opening 27 of the anchor member td is formed with a rectangular configuration to accept the two mounting legs 5'-5' of the spring clip B with a close mating flt.
As is well known in the rail fastener art, an insu.late~ installation may be provided by including a suitable tie pad 28 between the undersurface of the rail base and the upper surface of the crosstie and this tie pad may be combined with an appropriate insulated clip 29 dis-posed between the spring clip portion 9 and the upper surface 2l of the rail base flange and extending downwardly to separate the rail edge 4 from the anchor member as shown in FIG. 7 of the drawings.
The spring clip C disclosed in FIGS. 8 and 9 of the drawings comprlses a further modification and is preferably constructed of rod stock and wil.l be seen to include the same arrangement of a pair of adjacent and parallel mounting legs 5"-5", each having distal portions 6" projecting in the same direction and which are connected by the loop member 7"
comprising in turn the inside rail bearing portion 9" and outside tie anchor engaging portion 10" which latter portlons -lO-, are ~oined to the mounting legs by means of the end connecting pOrtiOnS 11". The loop member 7" will be noted to include a cross-over arm portiOn as do the other described embodiments and although not specifically iden-tified in Fig. 8, it will be understood this CroSS-OVer arm comprises the centr~l-most pOrtiOn of the loop member 7" in the area ad~acent the leg ends 6"-6" and, like the remaining embodiments, extends in a d$rection perpendicular to the running length of the rail base flange. In this arrangement the entire loop member 7" is preferably disposed in a single plane when in the at rest condition with the two mounting legs 5" disposed in a curved and slightly offset manner as shown most clearly in PIG. 9 of the drawings, which con-figuration facilitates the initial entry of the distal leg portions 6'1 into the attaclument grooves or openings of the selected anchor member. It will be appreciated that either of the shoulder or anchor members 1, la or lb may be used in combination with the spring clip C to provide a rail fastener installation.
The spring clip C itlustrated in FIGS. 10 and 11 may likewise be utilized with either the tie plate form of anchor member or one of the disclosed cast-in-tie forms of shoulder or anchor members and is constructed in a manner generally similar to the clips A & B. The mounting legs 52-52 are preferably slightly inclined upwardly from the end connecting portions 11 and the distal portions 6 thereof ex-tend substantlall~ beyond the vertical plane of the cross-over arm 8. ~o .acilitate insertion of the legs 52 into the openings 26a on either side of the central web 20b of the shoulder or anchor member le, each distal portlon 6a ls provided with a chamfer 27 as shown in FIG. 10.
To lnsure a fully insulated rall fastener assembly any one of the embedded shoulder or anchor members may be coated or covered with any sultable insulating material such as ceramic, epoxy or urethane prior to casting within the crosstie. Such an arrangement is shown in FIG. 12 whereln it will be seen that the shank 12 and platform 16 of the member le are thusly encapsulated, as at P.
Claims (18)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A fastener for securing a rail base flange to a crosstie including, anchor means secured atop said crosstie and having attachment means disposed adjacent said rail base flange, a spring clip of unitary metallic stock having a pair of adjacent and parallel mounting legs terminating in distal free end portions projecting in the same direction and engaging with said attachment means on said anchor means, said engaged mount-ing legs disposed parallel to the running length of said rail base flange, a single loop member joining said clip legs and including oppositely disposed rail bearing and tie anchor portions engaging said rail base flange and anchor means, respectively, said loop member including an upwardly curved cross-over arm extending in a vertical plane perpendicular to the running length of said rail base flange and connected at opposite ends to said rail bearing and tie anchor portions respectively, an end connecting portion in turn joining each said rail bearing and tie anchor portions respectively to said mounting legs, and said curved cross-over arm extends vertic-ally above the plane of all remaining structure of said clip both when applied to said anchor means and when removed therefrom.
2. A rail fastener according to claim 1 wherein, said spring clip defines a B-shaped configuration in top plan.
3. A rail fastener according to claim 1 wherein, said spring clip stock is cylindricalin cross-section.
4. A rail fastener according to claim 1 wherein, said spring clip stock is polygonal in cross-section.
5. A rail fastener according to Claim 1 wherein, said spring clip stock is rectangular in cross-section.
6. A rail fastener according to Claim 1 wherein, said spring clip is symmetrical about an axis passing between said mounting legs.
7. A rail fastener according to Claim 1 wherein, said attachment means includes a pair Of grooves in said anchor means.
8. A rail fastener according to Claim 1 wherein, said attachment means includes a single opening in said anchor means within which both said mounting legs are disposed.
9. A rail fastener according to Claim 1 wherein, said loop member cross-over arm includes a single curved element disposed in a single vertical plane and encompassing therebeneath said mounting legs.
10. A rail fastener according to Claim 1 wherein, said rail bearing and tie anchor portions are parallel to said mounting legs and normal to said end connecting portions and said cross-over arm.
11. A rail fastener according to Claim 1 wherein, said rail bearing, tie anchor and end connecting portions and said mounting legs are disposed in a common plane when said spring clip is removed from said anchor means.
12. A rail fastener according to Claim 1 wherein, said rail bearing, tie anchor and end connecting portions are disposed in a common plane when said spring clip is removed from said anchor means and said parallel mounting legs are vertically inclined away from said end connecting portions to said distal portions.
13. A rail fastener according to Claim 7 wherein, said anchor means includes an anchor member having a shank disposed within said crosstie, a head connected to said shank and provided with a platform atop said crosstie, and said grooves are disposed in said head above said platform.
14. A rail fastener according to Claim 8 wherein, said anchor means includes an anchor member having a shank disposed within said crosstie, a head connected to said shank and provided with a platform atop said crosstie, and said opening is disposed through said head above said platform.
15. A rail fastener according to Claim 8 wherein, said anchor means includes a base plate underlying said rail base flange and extending beyond the edge thereof to provide a platform atop said crosstie, and said platform includes a raised rib defining said opening therebeneath.
16. A rail fastener according to Claim 9 wherein, said mounting leg distal portions extend beyond the vertical plane of said loop member curved element.
17. A rail fastener according to Claim 9 wherein, said leg distal portions include opposed chamfers.
18. A rail fastener according to Claim 13 including, an insulating composition surrounding said shank and said platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA285,789A CA1076082A (en) | 1977-08-30 | 1977-08-30 | Rail fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA285,789A CA1076082A (en) | 1977-08-30 | 1977-08-30 | Rail fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1076082A true CA1076082A (en) | 1980-04-22 |
Family
ID=4109432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA285,789A Expired CA1076082A (en) | 1977-08-30 | 1977-08-30 | Rail fastener |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1076082A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008080219A1 (en) * | 2007-01-05 | 2008-07-10 | Pultrusion Technique Inc. | Insulating anti-corrosive rail clamp integrally made of a polymeric composition |
-
1977
- 1977-08-30 CA CA285,789A patent/CA1076082A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008080219A1 (en) * | 2007-01-05 | 2008-07-10 | Pultrusion Technique Inc. | Insulating anti-corrosive rail clamp integrally made of a polymeric composition |
| US8870088B2 (en) | 2007-01-05 | 2014-10-28 | Pultrusion Technique Inc. | Insulating anti-corrosive rail clamp integrally made of polymeric composition |
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| Date | Code | Title | Description |
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| MKEX | Expiry |