GB403256A - Improvements in and relating to railway track ballast tamping machines - Google Patents

Abstract

403,256. Tamping railway ballast. SCHEUCHZER, A., 11, Rue Neuve, Renens, Vaud, Switzerland. Sept. 8, 1932, No. 8210 /33. Convention date, Aug. 15, 1932. Divided application, under which a Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 9, 1932. [Class 104 (ii).] The machine comprises pairs of tamping tools 10 carried by a frame 2 which may be adjusted vertically by chain gear 9 driven by a motor 5 which also operates the tamping tools through shaft 14, eccentric gear 15, 16, and rods 43. The tools 10 are pivoted at 41 on levers 37 pivoted at 44 on slides which may be moved horizontally in the direction of the rails 12. The pivots 44 are connected by links 40 to opposite ends of a rocker 35 fixed to a shaft 38 which may be turned by a lever 50 connected at 51 to a screwed rod working in a nut rotatable by a gear wheel 53. The upper ends of the levers 37 are pivoted to the rods of pistons 47 which are normally held stationary by compressed air in the cylinders 48 supplied from a container 49. When the resistance of the ballast stops the tampers 10, the levers 37 rock about their pivots 44 and the pistons reciprocate in their cylinders. In another form, the upper row of the tampers are turned inwards, so that the tamping action takes place during a pulling movement of the rods 43. In the form shown in Fig. 4 the tampers are carried by levers 54 pivoted at their upper ends to the actuators 62 and connected by links 55 to rockers 56 carried by horizontally adjustable nuts 57. The upper ends of the rockers are connected to pistons 60 in cylinders 61 provided with spring-pressed inlet and outlet valves for compressed air.