Patent GB-191125137-A (GB)
Title: Improvements in Crushing Machines.
Inventor: SYMONS EDGAR B
IPC: B02C15/02
Filed: 1911-11-11
Granted: 1912-11-07
Abstract: 25,137. Symons, E. B. Nov. 11. Roller-and-ring mills.-In a roller-and-ring crushing - mill in which the roll or rolls are caused to rotate on thir own axes by independent means, the rolls E<7>, Fig. 1, are pivotally mounted at their lower ends and are free to swing radially at their upper ends, and the material is fed in a thin annular stream over the crushing-ring A<12>, which is formed with a lower smooth vertical zone A<15>, and with an upper zone at an inclination to the rolls and having inclined channels A<17> diminishing in depth downwards. Or the divergent portion of the crushing-surface may consist of two or more surfaces at different angles to the vertical. The stone &c. is fed by a shoot C<16> on to a rotating plate F<10>, and passes down a stationary conical apron C<14> and through pockets C<5>, Fig. 3, in the feed-ring C into the channels of the crushing-ring. The holding-ring A' is adjustable upon the top of the base A by means of screws A<8>, and the ring C, which has radial walls C<4>, is adjustable upon the top of the ring A<7> by means of screws C<2>. The roll E<7>, Fig. 5, is secured on the shoulder E<6> by the end piece E<9>, and the wheel E'‹, which rotates in opposition to the flexible or spring track C<9>, is provided with flexible spring spokes E<11> and a flexible tyre E<12>. The track C' is slidably mounted on a ring C<7> at the base of the walls C<4>, and is held against rotation by a chain C<10> attached to an annular guard-ring C<11> on the top of the walls C<4>. A sleeve B<5>, mounted on the central shaft B and driven by bevel-wheels B<11>, B<12> from the driving-shaft B<13>, carries a disk B<3> working on a bearing-cap B<2> at the top of the shaft B. The gudgeon-pins D<7> are held in lugs on cradles D, which are mounted on a flange B<8> of the sleeve B<5> and held against spacing-shims D<2> by means of nuts D<3> on bolts D<5> projecting from the sides of a triangular member D<6> on the sleeve, A cylindrical housing D<10>, pivotally mounted on the pins D', has a bearing-sleeve D<12> for the lower end of the shaft E of the roll, and a nut E<5> in the housing bears against the flange of a sleeve E' screwed on the shaft E, and limits the longitudinal movement of the shaft. The upper end of the shaft E is held in a bearing-sleeve E<15> in a housing E<13> having a shoulder on which is screwed a sleeve E<18>, the flange E<19> of which abuts against a flange E<16> screwed on the shaft in the opposite direction to the sleeve E'. A rectangular extension or collar F on the housing E<13> is slidably mounted between members in a wall F<2> bolted by its lugs F<7> to a flange F<8> of the sleeve B<5>, and the outward movement of the roll is limited by shims F<3>. The segments F<14>, which are secured to a flange F<15> on the sleeve B<5> and interposed between the tops of the rolls and the wheels E<10>, are spaced so as to form slots in which the shafts E can rock. Oil is pumped into a chamber G<1> in the base of the sleeve A<3>, and passes up through a hole G<2> in the shaft B to a chamber G<3> surrounding the bearing - cap B<2> and disk B<3>. A pipe G<4> leads oil to the chamber F<5> at the top of the housing E<13>, and, after passing down between the shaft E and the sleeve E<15> and between the shoulder E<14> and flange E<16>, the oil is conveyed from the chamber E<20> by a tangential passage E<21> to a vertical pipe G<6> discharging into the casing A<4>. A pipe G<8> communicating by a passage G<7> with the chamber G<3> discharges into a passage leading to the bottom of the shaft E, and the oil is returned from the chamber D" by a passage D<19> and pipe G<9> to the casing A<4>. The bearings B<14>, B<15> of the driving-shaft are supplied with oil by a passage G<10>, and the pocket G<13> at the end of the bearing B<15> is connected by a pipe G<14> to a pipe G<11> which leads back to the reservoir.