GB191119235A - Improvements in Stone-breaking Machines. - Google Patents

Abstract

19,235. Soc. Drouard FrÞres. Nov. 29,1910, [Convention date]. Roller mills. - In a stone-breaking machine comprising two pairs of rollers 2,12, and 24, 24<a>, Figs. 1 and 2, arranged one above the other, the rollers are fitted with detachable cellular or toothed sleeves 5, 17, 29, 29<a>, and the upper rolls turn at high speed and break the largest particles by blows, while the lower rolls are set nearer together and serve to complete the crushing. The sleeves 5, 17 are secured on the shafts 2, 12 by a key 18, and pin 19, and a shoulder 20 prevents any longitudinal displacement. The lower shafts 24, 24<a> carry cylinders 27, 27<a>, provided at one end with a driving- cross 28 to engage the sleeves 29, 29<a>, which are secured against longitudinal movement by pins 30. Two heavy fly-wheels are mounted on the driving-shaft 2, which also carries wheels meshing with wheels 15, 16 at the ends of the shaft 12. An intermediate shaft 21 protected by a sleeve 22 carries wheels 23 gearing with wheels on the lower back shaft 24, from which the shaft 24<a> is driven by wheels 26, 26<a> at each end. Springs 33 pressing the roller 29<a> towards the roller 29 rest in housings 35 on a cross-bar 36 and bear against adjusting-nuts 38 on rods 34, which bear against the bearings 25<a>. Blocks 39, 40 fill up the side spaces between the upper and lower rollers. The sleeves may be fitted to the upper shafts in the same manner as those on the lower shafts. Cylinders with teeth dovetailed thereon, or cylinders with toothed sleeves may be used. The machine may be mounted on a wheeled frame,