Patent GB-190809183-A (GB)
Title: Grading Machine.
Inventor: SNOW ARTHUR WARREN
Filed: 1908-04-28
Granted: 1908-11-26
Abstract: 9183. Snow, A. W. April 28. Excavating.-A grading- machine is designed to travel along a road or roughly-laid railway track and to draw or push in earth or other ballast from the sides of the road bed in advance of the travelling wheels of the machine. In the case of a railway, the machine is adapted to lift the rails and sleepers in advance while ballast is being shovelled in. The shovelling and rail-lifting apparatus are mounted on a framework which is adjustable along a double boom 22, Figs. 3 and 8, extending in front of a carriage 9 supported on a turntable 7 on an underframe 6 mounted on suitable trucks. The two sides of the boom are guyed to uprights 26,' which are pivoted at 27 and guyed back to the rear of the carriage 9 by ties 28 adjustable simultaneously by screws 28<a> and nuts 29, which can be rotated as required through sui table gearing connecting them at will with an engine 11. The boom is by these means adapted to varying gradients. To adapt it to curves, the carriage 9 is rotated by means of pinions 12 engaging a curved rack 6<a> and connected also through suitable gearing with the engine 11. Two pinions 12 are employed, one on each side, so that there is always one in gear through a wide range of movement. The engine 11 is connected through chain gearing 75, 71 to the wheels of one of the trucks for the purpose of propelling the machine. The track is lifted by means of four pairs of claws 67, 68, Fig. 7, attached to two cross-beams 65, which are connected by tackle 54, 54<a> to winding-drums on a shaft 48, Fig. 3. This shaft is driven by chain gearing from the crankshaft of the engine 11 and is fitted with clutches for connecting it to the several drums. The shovelling - apparatus is mounted so as to be capable of travelling bodily along the booms 22 on feet 80, Fig. 7, and comprises a set of shovels 114, on each side, carried by a long bent arm 112 pivoted to brackets 101, which can be traversed to-andfro on horizontal guides 97, 99, which are vertically adjustable in guides 80<a>, 80b, &c., the adjustments being made through suitable gearing by engines 104, 111 under the control of the operator. The lower ends of the shovel arms are connected by rods 113, 125 to transverse bars 84, 84<a>, which can be traversed to-and-fro by suitable gearing actuated by engines 95, 96. The bars 84, 84<a> are also connected by suitable gearing to the brackets 101 so that both the upper and the lower ends of the shovel arms are moved together during part of the movement of the latter. Individual shovels are connected to the arms 112 by pivoted arms 124<a>, which can be locked to the arms 112 by catches 122 or left free so that the shovels become inoperative. The inclination of each shovel blade relative to its arm can be adjusted by a rod 117 and a rack 116 actuated by gearing 118, 119 and a handle 120, the rack being locked by a dog 117<b>, Fig. 2, actuated by an eccentric 117<a>. The apparatus is controlled by an operator seated on a support 145, Fig. 8. Steam is supplied to the engines of the shovelling- apparatus by a jointed pipe 146 counterbalanced by weights 147.