Patent GB-759457-A (GB)
Title: Improvements in and relating to loading machines
IPC: E02F3/348
Filed: 1954-11-24
Abstract: 759,457. Tractor-mounted belt conveyer loading machines. BARBER-GREENE CO. Nov. 24, 1954 [March 4, 1954], No. 34095/54. Class 78 (1). A loading machine for loose material consists of a threewheeled tractor on which is mounted an inclined elevating conveyer, the conveyer being pivotally mounted at the rear of the tractor for movement in a vertical plane to one side of the single front steerable wheel 12 adjacent which the front end of the conveyer engages the ground, and a tie-bar 75 transferring longitudinal forces from the pivotal mounting to the forward end of the tractor. As shown, the conveyer is pivotally mounted by brackets 55, 56 on a sleeve 47 in turn pivotally carried by brackets 40, 50 on brackets 37, 39 secured to the rear axle 13. The tie-bar 75 is pivoted at 76 to sleeve 47 and is adjustably connected at 79 to the forward end of the tractor, the rear axle thereby being protected from longitudinal forces in the conveyer frame 19. Frame 19 consists of channels 26, Fig. 6, bolted to plates 24 forming side guards for material carried by an endless belt 23 carrying projections 36 for preventing backward sliding of the material. Belt 23 is guided by troughed idlers 31 mounted in bearings carried by a central longitudinal member 32 secured to transverse plates 25, and by plates 29 secured to plates 24 and forming guides for the edges of the belt. The lower run is supported on spaced idlers 33 on common shafts 34. The front end of the framework is guided in the vertical plane by a roller 83 carried by the inner channel 26 engaging between a pair of channel members 87 bolted in spaced relation at top and bottom and carried by further channel member adjustably secured longitudinally of the tractor frame by bolts 93 engaging selected holes 94 in the frame. The front end of the conveyer engages the ground by means of a pair of collector blades 162, 163, Fig. 5, the latter of which is pivotally mounted at 171 and urged downwardly by a spring 175 to counteract the tendency for the tractor to heel over to the side carrying the conveyer. To prevent excessive pressure of the blades 162, 163 on the ground the front end of the conveyer is partially suspended on the tractor frame by a tension spring 105. Blade 162 extends longitudinally in line with the tractor rear wheel on that side to divide the material whilst blade 163 extends diagonally towards the line of the tractor front wheel to collect material. The conveyer framework may be raised out of contact with the ground by a rope 95 passed over pulleys 97, 100 on the tractor and connected to a power take-off link 103 on the tractor. Material is fed to the belt over a shoe 161 by a number of arms 119 each carried by a crank-pin of a multi-throw crankshaft journalled in a frame 123. An upward extension of each arm is pivoted to a link 141 in turn pivoted to the forward end of frame 123. Frame 123 is pivoted on a shaft 125 to plates 124 carried by the conveyer framework and is urged downwardly against buffers 130 carried by plates 124 by springs 135. The crankshaft is driven by chain gearing from shaft 125 which is coupled by further chain gearing to two shafts 71a, 69, Fig. 2, carried by the conveyer framework, the latter being coupled by further chain gearing to a shaft journalled within the sleeve 47 and driven by a belt 61 from a motor 16, while the former is coupled by chain gearing to the upper belt pulley of the conveyer.