Show 2 X 71 7 X L MINING AND metallurgical PATENTS C X W 6 the following mining and metallurgical patents have been issued by the united states patent office i metallurgical furnace no john armitage drake of ovenden 0 vend en england in a regenerative furnace the combination with an outer casing and a series ol of longitudinal heating flues f f arranged therein one above the other and formino forming for a tortuous passage for the products ot of combustion of a series of transverse im perforate imperforate walls i 1 sup aai Z 7 porting 1 the said flues and forming a series of cold air passages having no communication with each other tiles arranged in the said passages so that the cold air is conducted aroun around deach each heating flue and a series of longitudinal air inlet passages it arranged under the said flue f each said cold air passage being provided with a separate inlet passage so that the air passing through each can be regulated separately to secure acure uniformity of temperature dumping car no john T argo r of poindexter Pein dexter kentucky assignor of two thirds to john and fred mccarty of same bame place t e at 23 zw NO A dumping cap cai comprising a wheeled truck or support adapted to serve as a plat form car a body platform detachable and mounted upon said truck and tilting boxes adapted to rest in a horizontal position upon said body platform and pivoted at their bases to the opposite ends thereof and having handles at at their outer ends whereby they may be tilted and the body platform rotated Hoi hoisting stino machine LIa chine no john B simpson 0 of f mo assignor of one fourth to willis T howerton of same place in a hoisting apparatus the combination with a drum shaft and a drum having a clutch member of a driving gear keyed to the shaft for axial movement thereon and having a cooperating clutch member a ring mounted upon the keys of the gear between it and the drum springs bearing upon said ring and upon the gear a fixed object a clutch setting device interposed between the gear and the fixed object and adapted for extension to impart axial movement to the gear gear and against said spring said fixed object having a clutch member adapted for engagement with the first named clutch member means for engaging and disengaging the clutch members and means for retarding the speed of the drum when the clutch members are disengaged coal and slate separator no martin J kerrigan of stockton pennsylvania assignor of one half to charles mcdon v jill 11 I 1 W ald aid of Wilkes barre pennsylvania the combination in a coal and slate separating machine of a rotating cylinder provided with longitudinal blades loosely pivoted at its periphery on axes parallel with that of the cylinder guard or deflecting bars secured to the frame overlapping and hol holding diny 7 the blades in backward tan tangential gemial positions for part of each revolution of thle the cylinder a chute above the cylinder for discharging the coal and slate on the exposed ends of said blades while thus held and an inclined plate below the cylinder for receiving coal the blades forming pockets adapted to receive the slate and carry the same past the point of discharge for the coal concentrator no george gates of jackson california an endless belt concentrator having an oscillating frame upon which it is carried means by which the belt is caused to travel 0 P t AN z 03 d slowly from the lower toward the upper end mechanism for distributing and gr grading ding pulp and depositing it upon the belt consisting of a series of par parallel albel traverse perforated troughs having their upper edges connected to form a continuous overflow irom from one troug trough h rh to another whereby the pulp is graded according to its gravity and is deposited at different points on the belt means whereby v said framo is oscillated and means for recye regulating 11 the travel of the belt |