Abstract: In one aspect of the invention a system for removing a layer of a paved surface comprising a vehicle is adapted to traverse a paved surface in a selected direction. The vehicle has a milling drum with an axle substantially parallel and connected to the vehicle within a milling chamber. The drum is adapted to rotate around the axle between the paved surface and the vehicle. A conveyor belt is attached to a forward end of the vehicle and comprises a portion proximate an opening of the milling chamber. The belt is adapted to carry loose aggregate from the milling drum away from the paved surface. At least one nozzle is disposed on an underside of the vehicle and is in communication with a reservoir through a pathway. The at least one nozzle is adapted to direct the loose aggregate towards the portion of the conveyor belt.

Abstract: A mining machine comprising a discharge boom including a tail slide plate slidably connected between left and rear side frames, and a tail roller assembly mounted on the tail slide plate. The tail roller assembly includes a take-up roller mounted centrally between the side frames and between a pair of spacer blocks and a pair of bearing blocks, each of the spacer blocks and bearing blocks being connected to a rearward edge of the tail slide plate. The mining machine also has an opening in each of the side frames, and two slide plate guides, one on each side frame, each of which is positioned outside of the respective side frame adjacent a respective one of the side frame openings, and mounted for sliding movement relative to its respective side frame.

Abstract: A continuous miner including a support frame having a support frame front, and a sumping frame mounted on the support frame for forward and rearward movement relative to the support frame. The sumping frame has a sumping frame front, and the miner further includes a cutting drum pivotally mounted on the sumping frame, the cutting drum being positioned near the sumping frame front. The miner also includes a gathering head for gathering mined minerals pivotally mounted on the sumping frame front, and a hydraulic cylinder for pivoting and fixing the gathering head relative to the sumping frame in both the raising and lowering directions.

Abstract: A mining machine (20) for combined entry and retreat cutting of material located in underground seams including, a movable mainframe (21), a wing (50, 51) extending ahead of the movable mainframe, a cutter assembly (100) positionable proximate the end of the wing for entry cutting a hole in the material when the wing is aligned with the direction of movement of the mainframe, a pivotal connection (130) between the mainframe and the wing for orienting the wing at an angle to the direction of the movement of the mainframe, and a carriage mechanism (80) for moving the cutter assembly along the wing for cutting of the material in proximity to the wing during retreat cutting of the material.

Abstract: A method of and an arrangement for loosening, loading and transporting of stratified minerals includes a single continuously rotating and forceably guided pulling organ, a plurality of loosening elements integrated in the pulling organ in its working run extending in a longitudinal direction of a longwall, and a plurality of transporting elements also integrated in the same single pulling organ at its transporting run located behind the working run at a back filling side, wherein the loosening elements perform loosening and loading functions, whereas the transporting elements perform the transporting functions in an opposite longitudinal direction of the longwall.

Abstract: A mining machine is disclosed comprising a mobile base and a cutting head assembly at a forward end of the mobile base having a cutter drum rotatable about an output shaft disposed along the longitudinal axis of the cutter drum. A drive system for the cutting head assembly comprises at least one motor for driving at least one toothed motor pinion and a generally cylindrical combination gear having generally circular end surfaces. A bevel or face gear is formed in at least one of the end surfaces, having teeth adapted to mate with and be driven by the toothed motor pinion. The combination gear has a worm gear formed in the outside cylindrical surface, which is disposed in driving engagement with the teeth of an output gear integrally and coaxially connected to the output shaft of the cutter drum.

Abstract: The front end portion of an endless belt type conveyor is detachably connected to the floor of a self-propelled tunneling shield, and the rear end of the conveyor is supported inclined upwardly by a trailing, mobile power unit which rides on spaced apart rails disposed along the tunnel floor. A pair of double acting hydraulic cylinders advance and retract a boom supporting carriage along support rails mounted along the length of the conveyor. An elongate boom is mounted on the carriage for movement with the carriage toward and away from the tunnel face. A combination digging and hoeing excavator tool is carried by the front end portion of the boom to loosen material at the tunnel face and then hoe the loosened material rearwardly onto the conveyor.