Patent GB-190601330-A (GB)
Title: Improvements relating to Railway Couplings.
Inventor: PAVIA NICOLA
Filed: 1906-01-17
Granted: 1906-05-24
Abstract: 1330. Pavia, N., and Casalis, G. Jan. 17. Couplings, automatic. -The coupling-members consist of a coupling- head 1, slotted to receive two rotatable hooks 3, and a hollow coupling- link 8 carried at the end of the draw-bars 2, 2<a>, Figs. 1 and 2. The rotatable hooks 3, pivoted on bolts 4 on the coupling-hook 1 and provided with teeth 5, are formed with a rear projection 7 and a hook 6 which engages with transverse bars 9 on the coupling-link 8. A movable member 12 located in a recess in the draw-bar 2 projects below the draw-bar in the uncoupled position, and is provided with a projection 13 adapted to be engaged by the rear projection 7 of the lower coupling-book 3 when the latter is turned by the vehicles coming together. A locking-sleeve 14 slidably mbunted on the draw-bar 2 is provided with projections 21, 22 adapted to be engaged by levers 19, 20 secured to a transverse shaft 16 operated by a weighted lever 17..The coupling is set by turning the lever 17 so that the arm 19 acting on the projection 21 moves the sleeve 14 until it bears against the projecting end of the member 12. On two vehicles coming together, the hooks 3 are rotated by engaging with the transverse bars 9, and as the member 12 is raised the sleeve 14 passes over the ends of the hooks 3 and retains them. The lever 17 is retained in its two extreme positions by a cam 36, Fig. 1, mounted on the shaft 16 and acted on by a spring 38. The lower hook 3 is provided with a weighted tail 10, or is pressed into the pendent position by a spring 46, Fig. 7, and a spring 48 may be employed to move the sleeve 14 to locking position. A spring 47 may also be employed to raise the member 12 so that its end projects. The weighted lever 17 may be replaced by a slotted lever 51, Fig. 9, secured to the transverse shaft 16 and connected to the vehicle by a spring 53 engaging at one end in the slot 52. The action of the spring 53 is such, that, after the release of the coupling by rotation of the lever in the direction of the arrow, the sleeve 14 is entirely removed from the member 12 and the vehicles may bear against one another without coupling. In order that the ordinary couplings may be used, the draw-bars 2, 2<a> may be moved aside by the shunter, and are retained in that position during the coupling of the vehicles by the hook 20, Fig. 5, and a similar hook 39 mounted on the shaft 16 and rotated by the shaft through the medium of a projection 41, Fig. 6, on the shaft. The hooks 20, 39 pass into slots in an angle-iron 41<b> and engage with projections 44, 44<a> on the draw-bars. On rotation of the shaft 16, the draw-bars are moved to the normal position by the action of a spring 32, Fig. 2, which is slightly compressed when the draw-bars are moved aside. Draw-gear; buffers.-The draw-bars 2, 2a are pivoted to balance beams 26, 27, Figs. 1 and 2, slotted at 29 for connexion with the draw-bar 24 of the vehicle. The ends of draw-bars 2, 2<a> bear on a plate 31, to which is secured the base of a buffer spring 32. The spring 32 and springs 34 are fixed at their inner ends to a back-plate 33 and are adapted to absorb the lighter shocks. When they are compressed or extended a certain extent, the pin 28 on the main draw-bar 24 comes to one end of the slot 29, and further compression or extension is borne by the usual springs connected to the draw bar 24.