Patent GB-191326898-A (GB)
Title: Improvements in or relating to Grain Grinding Machines.
Inventor: MOORE WILLIAM FORRESTER
IPC: B02C7/18
Filed: 1913-11-22
Granted: 1914-03-12
Abstract: 26,898. Moore, W. F., and Moore, G. J. Nov. 22. Disk mills.-Relates to a vertical mill for grinding grain in which an adjustable spring- pressed stationary disk acts in conjunction with a rotary disk, and in which the grain is fed to the disks by a shaking screening-shoe and by a screw conveyer on the shaft of the running disk. The resiliently-supported screening-shoe is operated by an eccentric drive, the delivery from the hopper to the shoe being adjustable by means of a duplex gate, and the elongated hollow hub of the stationary disk within which the screw conveyer works is so arranged within its casing that it slides in an axial direction under the influence of a separately-detachable spring device capable of ready adjustment and locking. The stationary head 14, Fig. 5, is adjustable by means of a hand-wheel 32 on a bolt 22 passing through a screw 27, which regulates the spring 37 and is carried by the detachable cap 25. The screw 27 is formed at its outer end with a clutch-member 28 to engage with the hub 29<a> of a releasing-lever 30, which is loose on the bolt 22 and has a countersunk face 29 engaging a bevel on the inner end of the wheel 32. Lock-nuts 31, 36 are provided for the screw 27 and hand-wheel 32. A removable key 39 prevents the throat 15 from rotating and ensures that the opening 16 registers with the outlet 17 of the feed-shoot 18. The grinding-heads 11, 14 are provided with grinding- plates 12, 13 and distributing-plates 41. The feed-hopper 42, Fig. 4, is mounted on a table 50 supported on standards 76 secured to the base 4, and delivers through a box 45 to an inclined feed-shoe 58, which is suspended by flat springs 57 and provided with a distributing-pan 59 and screens 60, 61. A gate hinged on a rod 43, Fig. 8, passing through the sides of the box 45 and operated by a lever 52 and link 53, is formed with a central pocket 47 provided with a gate 48 operated by a lever 49 and link 51. When a rapid feed is required, the gates are moved away from the inclined end 55 of the box 45, and when a slow feed is desired the gate 48 only is opened. The shoe 58 is agitated by an eccentric 71 on a shaft 72 supported in ball bearings 73, 74, Fig. 9, on brackets on the legs 76. The brackets partly surround the bearings and have set-screws 77 adjustable in bosses 78 and fitting at their inner ends into caps 79, which have concave heads 80 fitting in openings 81 in the surface of the bearings. Nuts 82 on the screws 77 lock the bearings in the adjusted position. The rod 71<b> is screwed into the eccentric strap 71<a> and fastened at the other end to a flat spring 90 attached to the shoe 58. The shoe 58 has an end outlet 67 for the tailings from the upper screen 61, and a bottom outlet 68 for the fine material passing through the lower screen 60, the grain passing by a spout into the shoot 18. The shaft 72 is provided with fast and loose pulleys 92, 91, the driving-belt passing around a pulley 105 on the shaft 1 to the pulleys 91, 92 and down to a tensioning-pulley 106 mounted on a hollow stud 106<a>, which is adjustable vertically in a bracket 106<b> by a screw 107. The fast pulley 92 is provided with adjustable balance-weights 98, 99, and the loose pulley 91 runs on two sets of ball bearings 91<a>, 91<b> separated by a ring 94 and held in place by adjustable nuts 95. The driving-pulley 100 on the shaft 1 is perforated to allow air to escape from beneath the belt.