CA1052246A - Railway axle end cap screw locking device - Google Patents
Railway axle end cap screw locking deviceInfo
- Publication number
- CA1052246A CA1052246A CA267,624A CA267624A CA1052246A CA 1052246 A CA1052246 A CA 1052246A CA 267624 A CA267624 A CA 267624A CA 1052246 A CA1052246 A CA 1052246A
- Authority
- CA
- Canada
- Prior art keywords
- plate
- tabs
- locking device
- screw
- end cap
- 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
Landscapes
- Connection Of Plates (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
A locking plate for the axle and cap screws of railway axles equipped with roller bearings is formed with an aperture positioned to accommodate a cap screw and at least one tab on the periphery of the plate near the cap screw aperture deformable into rotation-preventing engagement with the cap screw.
A locking plate for the axle and cap screws of railway axles equipped with roller bearings is formed with an aperture positioned to accommodate a cap screw and at least one tab on the periphery of the plate near the cap screw aperture deformable into rotation-preventing engagement with the cap screw.
Description
-iOS~2~
The invention relates to railway axles and consists particularly in locking plates for the end cap screws on roller bearing axles.
According to the invention there is provided a lock-ing device for a railway axle end cap screw having a polygonal head, comprising a plate having a circular aperture of sufficient size to accommodate the shank of the screw and a peripheral edge spaced radially from said aperture and shaped for anti-rotational relation with the inner surface of the adjacent portion of the end cap rim, and a pair of plate-like tabs substantially normal to the plane of said plate on said peripheral edge of said plate and intersecting said plate on normals to radii of said aperture, said tabs being wholly spaced radially from the center of said aperture a greater distance than the maximum radius of the cap screw head whereby to provide sufficient clearance for rotation of the cap screw into end cap securing position and being of substantially greater length than the thickness of the head of said cap screw and having their ends remote from said plate preformed to facilitate forcibly folding said tabs into the space between the polygonal head of the cap screw and the end cap rim where-by through engagement with the rim and the cap screw head at locations spaced circumferentially thereof, to prevent undesired rotation and loosening of the screw.
In the accompanying drawings:
FIG. 1 is an elevational view of an end cap locking plate constructed according to the invention, showing its application to an end cap prior to locking of the cap screws.
FIG. 2 is a transverse sectional view taken along line 2-2 of FIG. 1.
FIG. 3 is a fragmentary view taken from line 3-3 of FIG. 1 showing the first step in deformation of a tab into locking engagement between a cap screw head and the axle end cap rim. ~
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FIG~ 4 is a view corresponding to FIG~ 3 but showing the tab partially deformed toward locking configura~ion.
FIG~ 5 corresponds to FIGS~ 3 and 4 but shows the tab fully deformed into cap screw locking condition.
FIG~ 6 is a sectional view corresponding to FIGr 2 but showing a modified form of the invention in which the locking tabs are of different shape.
FIGS. 7, 8 and 9 correspond to FIGS~ 3, 4 and 5 but show the various steps in the deformation to locking condition of tabs of the type illustrated in FIG~ 6~
FIG~ 10 is a sectional view corresponding to FIG~ 2 but showing tabs which are separate from and welded to stubs on the plate rather than being integral with the locking plate.
FIG~ 11 is an elevational view of an individual locking plate for one cap screw.
FIG~ 12 is a view taken along line 12-12 of FIG~
showing the tab construction, FIGS~ 13 and 14 show two additional tab configurations -applicable to any of the embodiments illustrated in FIGS~ 1-12 The numeral 1 indicates a railway roller bearing axle end cap formed with a generally triangular upstanding rim 3 having arcuate corner portions 5 and apertured adjacent each corner as at 7 to permit the passage therethrough of the shank portion 9 of cap screws each having a hexagonal head 11 for securing the axle end cap 1 to the end surface of the axle.
For preventing undesired rotation of cap screws 9, 11 from their secured positions, a metal plate 13 of generally triangular shape with rounded corners 15 and straight sides 17 conformed generally to the shape of end cap rim 3 but being slightly smaller than the inside dimensions of the latter is similarly formed with circular apertures 19 in each of its corners to receive the shanks of the cap screws and is circu-larly apertured at its center at 21 to accommodate a lubrication jrc:~' lOS'~2~6 fitting (not shown) at the center of the end cap.
Adjacent the points of tangency of the curved apices 15 of plate 13 with straight sides 17 thereof are formed upstand-ing tabs 23 the upper portions of which are bend radially out-wardly at 25 and the terminals of which are curved upwardly and inwardly as at 27 in semicylindrical configuration, Prior to application of the end caps to the axle ends, locking plates are positioned in the space bounded by rim 3 of the end cap, cap screws are inserted through the registering apertures 19 and 7 and screwed into the threaded cap screw holes (not shown) in the axle end until the end cap is tightly secured to the axle end.
A hammer is then utilized in the manner shown in FIGS. 3 and 4 to deform tabs 23, 25, 27 into the conditon shown in FIG. 5 wherein they fully occupy the space between aach of the cap screw sides or angles and the inner surfaces of the end cap rim 3 thereby locking the cap screw heads against rotation.
The embodiment shown in FIGS. 6-9 is identical to that illustrated in FIGS. 1-5 except for the shape of tabs 31, the upper portions of which are similarly rebent radially outwardly at 33 and then rebent upwardly and inwardly and downwardly to form a substantially full circular upper terminal 35.
~ In FIGS. 7, 8 and 9 the steps of deforming tabs 31, 33, 35 by use of a hammer H into locking position of FIG. 9 are shown.
The em~odiment of Fig. 10 utilizes short radial stubs 39 which are bent upwardly and separate tabs having an upstanding straight lower portion 41 bent radially outwardly at 43 and up-wardly and inwardly in semicircular configuration at 45, the up-standing portion 41 being welded to stubs 39. This c3nstruction may be utilized to conserve the axtra amount of metal which would be wasted if the full length tabs were integral with the locking plate. It will be understood that the separate tabs may be of any desired configuration such as the semicircular type of FIGS. 1-5 or the substantially fully circular type of FIGS. 6-9.
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The embodiment of FIGS. 11 and 12 utilizes a small individual locking plate 46 for each cap screw, rather than a large plate arranged for locking engagement with all three cap screws. Plate 46 has a pair of short angularly disposed sides 47 connected at their remotely spaced ends by a long straight side 48 and at their closely spaced ends by an arcuate edge 4~9.
A central hole 50 is formed for the cap screw shanks to pass through, and a pair of radial tabs 51, similar to those shown in FIGS. 1-5, extend upwardly from the periphery of plate 46 between side 47 and arcuate edge 49. The plates are positioned in the corners of the end cap with sides 47 parallel to rim 5, screws llinserted through holes 50 and tabs 51 hammered down between the screw heads and rim 5 as shown in FIGS. 3-5.
Rotation of the individual plate with respect to the end cap rim, as well as rotation of the individual screw with respect to the plate is accomplished by engagement of the tabs with at least one face and one angle of the screw heads and the inner surfaces of the end cap rims.
FIG. 13 illustrates another form of tab 51a, applicable to three-screw locking plates of FIGS. 1-10 or to the single-screw locking plates of FIGS. 11-12, in which the upper portion is curved first outwardly at 52 in a substantial semicircle and then reverse curved upwardly and inwardly at 53 in a larger semicircle to form a generally "S" shaped upper portion.
In FIG. 14 tab 55 is bent obliquely outwardly at 57 and then obliquely inwardly at 59 to form a "V" shaped terminal.
This tab configuration is equally applicable to the three-screw or single screw locking plates.
~~ / Jr
The invention relates to railway axles and consists particularly in locking plates for the end cap screws on roller bearing axles.
According to the invention there is provided a lock-ing device for a railway axle end cap screw having a polygonal head, comprising a plate having a circular aperture of sufficient size to accommodate the shank of the screw and a peripheral edge spaced radially from said aperture and shaped for anti-rotational relation with the inner surface of the adjacent portion of the end cap rim, and a pair of plate-like tabs substantially normal to the plane of said plate on said peripheral edge of said plate and intersecting said plate on normals to radii of said aperture, said tabs being wholly spaced radially from the center of said aperture a greater distance than the maximum radius of the cap screw head whereby to provide sufficient clearance for rotation of the cap screw into end cap securing position and being of substantially greater length than the thickness of the head of said cap screw and having their ends remote from said plate preformed to facilitate forcibly folding said tabs into the space between the polygonal head of the cap screw and the end cap rim where-by through engagement with the rim and the cap screw head at locations spaced circumferentially thereof, to prevent undesired rotation and loosening of the screw.
In the accompanying drawings:
FIG. 1 is an elevational view of an end cap locking plate constructed according to the invention, showing its application to an end cap prior to locking of the cap screws.
FIG. 2 is a transverse sectional view taken along line 2-2 of FIG. 1.
FIG. 3 is a fragmentary view taken from line 3-3 of FIG. 1 showing the first step in deformation of a tab into locking engagement between a cap screw head and the axle end cap rim. ~
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irc~
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FIG~ 4 is a view corresponding to FIG~ 3 but showing the tab partially deformed toward locking configura~ion.
FIG~ 5 corresponds to FIGS~ 3 and 4 but shows the tab fully deformed into cap screw locking condition.
FIG~ 6 is a sectional view corresponding to FIGr 2 but showing a modified form of the invention in which the locking tabs are of different shape.
FIGS. 7, 8 and 9 correspond to FIGS~ 3, 4 and 5 but show the various steps in the deformation to locking condition of tabs of the type illustrated in FIG~ 6~
FIG~ 10 is a sectional view corresponding to FIG~ 2 but showing tabs which are separate from and welded to stubs on the plate rather than being integral with the locking plate.
FIG~ 11 is an elevational view of an individual locking plate for one cap screw.
FIG~ 12 is a view taken along line 12-12 of FIG~
showing the tab construction, FIGS~ 13 and 14 show two additional tab configurations -applicable to any of the embodiments illustrated in FIGS~ 1-12 The numeral 1 indicates a railway roller bearing axle end cap formed with a generally triangular upstanding rim 3 having arcuate corner portions 5 and apertured adjacent each corner as at 7 to permit the passage therethrough of the shank portion 9 of cap screws each having a hexagonal head 11 for securing the axle end cap 1 to the end surface of the axle.
For preventing undesired rotation of cap screws 9, 11 from their secured positions, a metal plate 13 of generally triangular shape with rounded corners 15 and straight sides 17 conformed generally to the shape of end cap rim 3 but being slightly smaller than the inside dimensions of the latter is similarly formed with circular apertures 19 in each of its corners to receive the shanks of the cap screws and is circu-larly apertured at its center at 21 to accommodate a lubrication jrc:~' lOS'~2~6 fitting (not shown) at the center of the end cap.
Adjacent the points of tangency of the curved apices 15 of plate 13 with straight sides 17 thereof are formed upstand-ing tabs 23 the upper portions of which are bend radially out-wardly at 25 and the terminals of which are curved upwardly and inwardly as at 27 in semicylindrical configuration, Prior to application of the end caps to the axle ends, locking plates are positioned in the space bounded by rim 3 of the end cap, cap screws are inserted through the registering apertures 19 and 7 and screwed into the threaded cap screw holes (not shown) in the axle end until the end cap is tightly secured to the axle end.
A hammer is then utilized in the manner shown in FIGS. 3 and 4 to deform tabs 23, 25, 27 into the conditon shown in FIG. 5 wherein they fully occupy the space between aach of the cap screw sides or angles and the inner surfaces of the end cap rim 3 thereby locking the cap screw heads against rotation.
The embodiment shown in FIGS. 6-9 is identical to that illustrated in FIGS. 1-5 except for the shape of tabs 31, the upper portions of which are similarly rebent radially outwardly at 33 and then rebent upwardly and inwardly and downwardly to form a substantially full circular upper terminal 35.
~ In FIGS. 7, 8 and 9 the steps of deforming tabs 31, 33, 35 by use of a hammer H into locking position of FIG. 9 are shown.
The em~odiment of Fig. 10 utilizes short radial stubs 39 which are bent upwardly and separate tabs having an upstanding straight lower portion 41 bent radially outwardly at 43 and up-wardly and inwardly in semicircular configuration at 45, the up-standing portion 41 being welded to stubs 39. This c3nstruction may be utilized to conserve the axtra amount of metal which would be wasted if the full length tabs were integral with the locking plate. It will be understood that the separate tabs may be of any desired configuration such as the semicircular type of FIGS. 1-5 or the substantially fully circular type of FIGS. 6-9.
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The embodiment of FIGS. 11 and 12 utilizes a small individual locking plate 46 for each cap screw, rather than a large plate arranged for locking engagement with all three cap screws. Plate 46 has a pair of short angularly disposed sides 47 connected at their remotely spaced ends by a long straight side 48 and at their closely spaced ends by an arcuate edge 4~9.
A central hole 50 is formed for the cap screw shanks to pass through, and a pair of radial tabs 51, similar to those shown in FIGS. 1-5, extend upwardly from the periphery of plate 46 between side 47 and arcuate edge 49. The plates are positioned in the corners of the end cap with sides 47 parallel to rim 5, screws llinserted through holes 50 and tabs 51 hammered down between the screw heads and rim 5 as shown in FIGS. 3-5.
Rotation of the individual plate with respect to the end cap rim, as well as rotation of the individual screw with respect to the plate is accomplished by engagement of the tabs with at least one face and one angle of the screw heads and the inner surfaces of the end cap rims.
FIG. 13 illustrates another form of tab 51a, applicable to three-screw locking plates of FIGS. 1-10 or to the single-screw locking plates of FIGS. 11-12, in which the upper portion is curved first outwardly at 52 in a substantial semicircle and then reverse curved upwardly and inwardly at 53 in a larger semicircle to form a generally "S" shaped upper portion.
In FIG. 14 tab 55 is bent obliquely outwardly at 57 and then obliquely inwardly at 59 to form a "V" shaped terminal.
This tab configuration is equally applicable to the three-screw or single screw locking plates.
~~ / Jr
Claims (12)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A locking device for a railway axle end cap screw having a polygonal head, comprising a plate having a circular aperture of sufficient size to accommodate the shank of the screw and a peripheral edge spaced radially from said aperture and shaped for anti-rotational relation with the inner surface of the adjacent portion of the end cap rim, and a pair of plate-like tabs substantially normal to the plane of said plate on said peripheral edge of said plate and intersecting said plate on normals to radii of said aperture, said tabs being wholly spaced radially from the center of said aperture a greater distance than the maximum radius of the cap screw head whereby to provide sufficient clearance for rotation of the cap screw into end cap securing position and being of sub-stantially greater length than the thickness of the head of said cap screw and having their ends remote from said plate preformed to facilitate forcibly folding said tabs into the space between the polygonal head of the cap screw and the end cap rim whereby through engagement with the rim and the cap screw head at locations spaced circumferentially thereof, to prevent undesired rotation and loosening of the screw.
2. A locking device according to claim 1 wherein said plate has an inner peripheral edge in spaced but proximate relation with said circular aperture.
3. A locking device according to claim 2 wherein the lower portion of each of said tabs is substantially normal to said plate and the upper portion is bent outwardly away from said plate and has its terminal curved upwardly and inwardly.
4. A locking device according to claim 2 wherein the lower portion of each of said tabs is substantially normal to said plate and the upper portion is of S-configuration.
5. A locking device according to claim 2 wherein the lower portion of each of said tabs is substantially normal to said plate and the upper portion is of V-configuration.
6. A locking device for the hexagonal-headed end cap screws of railway axles comprising an equilaterally triangular plate having rounded corners concentric with the screw centers and substantially tangent to the adjacent sides of the plate, circular openings in the plate of sufficient size and positioned to accommodate the shanks of the screws, and upstanding plate-like tabs on the periphery of the plate adjacent the respective points of tangency of the rounded corners and sides of the plate and intersecting said plate on normal to radii of the respective screw openings, said tabs being preformed to facilitate forcibly folding them downwardly to occupy the space between the hexagonal heads of the respective screws and the upstanding peripheral rim of the axle end cap and by engagement with the rim and the re-spective screw heads at locations spaced apart circumferentially thereof preventing undesired rotation and loosening of the screws.
7. A locking device according to claim 6 wherein the lower portion of said tabs are substantially normal to the plane of said plate and the upper portions are bent radially outwardly with their terminals curved upwardly and inwardly to form substantially semicircles.
8. A locking device according to claim 6 wherein the lower portions of said tabs are substantially normal to the plane of said plate and the upper portions are bent radially outwardly with their terminals curved upwardly, inwardly and downwardly to form substantially full circles.
9. A locking device according to claim 6 wherein the Lower portion of each of said tabs is substantially normal to said plate and the upper portion is of S-configuration.
10. A locking device according to claim 6 wherein the lower portion of each of said tabs is substantially normal to said plate and the upper portion is of V-configuration.
11. A locking device according to claim 4 wherein said tabs are integral with said plate.
12. A locking device according to claim 4 wherein said plate is formed with upwardly bent radial stubs and separate tabs are lapped against said stubs and welded thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA267,624A CA1052246A (en) | 1976-12-10 | 1976-12-10 | Railway axle end cap screw locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA267,624A CA1052246A (en) | 1976-12-10 | 1976-12-10 | Railway axle end cap screw locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1052246A true CA1052246A (en) | 1979-04-10 |
Family
ID=4107480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA267,624A Expired CA1052246A (en) | 1976-12-10 | 1976-12-10 | Railway axle end cap screw locking device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1052246A (en) |
-
1976
- 1976-12-10 CA CA267,624A patent/CA1052246A/en not_active Expired
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