Patent GB-190718233-A (GB)
Title: Improvements in Combined Mining and Loading Machinery.
Inventor: MORGAN EDMUND COBB
Filed: 1907-08-12
Granted: 1908-08-06
Abstract: 18,233. Morgan, E. C. Aug. 12. Undercutting &c. breaking-down appliances.- Relates to combined mining and loading machinery; particularly for coal, and comprises means for undercutting and breaking down the coal, and transporting the broken coal to the rear of the machine and loading it into trucks. The undercutting means comprises an endless chain 1 provided with cutters 2 and mounted on a platform laterally adjustable for cutting entries of different widths and vertically adjustable on a shoe 14. A reciprocated tool 22 for breaking down the coal is arranged above the undercutting-mechanism and connected to a piston 26 reciprocated in a cylinder 27, and is adjustable horizontally about a pivot 46 and vertically about pivots 72, 73 by means of fluid-actuated pistons. The tool 22 has a bevelled face 22<a> and is capable of rotary adjustment by means of gear 30, 31. Means are provided for restoring the tool 22 to an horizontal position after adjustment about the pivots 72, 73. The main frame 16 is held against backward movement during the advance of the cutters by vertically adjustable spuds 207 and also by laterally adjustable struts 98 pivoted by a system of links to fluid-actuated pistons, so that, after the struts have engaged with the walls, further application of pressure causes the frame 16 and the parts mounted thereon to move bodily with respect to the wall 7. The undercutting- mechanism is movable relatively to the main frame 16 by means of fluid-actuated pistons acting on arms 114, the rear part of the undercutting-frame being supported by means of a slide 93. The tool 22 is also movable longitudinally independently of the main frame and the undercutting. mechanism by means of pistons 95 acting on members 66. The frame 16 is preferably mounted on shoes 120, and is vertically adjustable thereon. The conveyer for removing the coal thrown down by the tool 22 comprises two endless chains 131,132 travelling in the same plane with their inner folds running in the same direction away from the cutters. The conveyer moves over platforms 15, 151, 125, 129, the part 125 being pivoted at 128 to facilitate the movement of the machine round curves. The part 129 is pivoted at 134 and is vertically adjustable so that a car 133 may be run under it to receive the discharge. The parts of the conveyer other than those which are moving away from the cutters are covered by shields 147, 148, 149, 150, 153, 154. The slack in the chains due to the relative movement of the undercutting- mechanism and the frame 16 is taken up by loops of the chains being passed around pulleys 155 connected to fluid-actuated pistons. The power for driving the cutters and conveyer is derived from a motor 163 through gearing 165, 166 and independent clutches 168, 169. The cutter chain 1 is driven by a sprocket-wheel 180 through universal joints 172, 175, a sliding connexion 174, and bevel gearing, and the conveyer chains by sprockets 185, 188 and bevel gearing. The main portion 130 of the machine and its connected parts, which normally rest on the floor, may be transported on rails when required, such rails 198 being carried by the machine and laid when required, the machine being raised for this purpose by fluid-actuated means 191 and moved on rollers 193. The car 133 may be mounted on the rails 198, and may be driven by a motor mounted on the car and having trolly connexion with a wire 212 mounted on a reel carried by the frame 130.