Patent GB-190804478-A (GB)
Title: Transportable Grain Mill Fitted with Cleaning, Grinding, and Sifting Apparatus.
Inventor: DROZ CAMILO
Filed: 1908-02-27
Granted: 1908-05-28
Abstract: 4478. Droz, C. Feb. 27. Roller mills.- Relates to a transportable grain mill carried by a wheeled carriage and fitted with cleaning, grinding, and sifting machines for producing three qualities of finished flour. Figs. 1 and 2 show longitudinal sections, and Figs. 3 and 4 show transverse sections. The mill is divided into two parts by a series of elevators, the front part containing the bolting and sifting apparatus and the rear part the cleaning and grinding machines. The wheat is fed from a hopper 1 by a roller 2 to an elevator 3 which delivers to the inner sieve of the sorter 4, any straw or dust present in the grain being removed by an exhaust fan 13 and discharged at an outlet 13'. The grain falling into a conveyer 6 is discharged into the outer screen of the sorter, and the good grain passes through a passage 9 to a small elevator 10 which delivers it to a machine 16 in which the germ is removed, while foreign matters pass out by a passage 7. The wheat is next treated in a brushing-machine 19, and is discharged by a conveyer 17 to an elevator 20 which delivers to a conveyer 21 feeding the first pair 28 of fluted rolls. The fan 13 removes dust from the machines 16, 19 and the elevators, and the grain may be moistened with water supplied by a pipe 27 from a reservoir 26. There are provided four pairs of fluted rolls adjustable by screws 218 and discharging into inclined bolters 30, 123, 131, 137 fitted inside with fixed brushes. The flour from the bolter 30 and the grits from the bolter 137 are discharged by conveyers 33, 139 into pipes 33<1>, 140 leading to a conveyer 35, which delivers to an elevator 37 feeding the centrifugal 39. The flour separated by the centrifugal is discharged as t h i r dquality flour at a spout 41, and the bran by a spout 42. The grits from the bolter 30, siftings f r o m the bolters 123, 131, and flour from the bolter 137 are delivered by conveyers 32, 124, 132, 138 to a bolter 43, the flour from which is discharged as second-quality flour at the spout 47, while the tailings pass by a pipe 55, elevator 56, and conveyer 57 to a sifter 58. The throughs of the sieve 58 pass by a conveyer 59, pipe 60, and elevator 61 to the first pair 64 of smooth rolls. Four pairs of smooth rolls mounted above inclined bolters 66, 54, 91, 105 are provided. The fine grits separated by the bolter 43 pass by conveyers 45, 59 and an elevator 50 to the second pair of smooth rolls. The flour separated by the bolters 66, 54, 91, 105 is delivered by conveyers 67, 77, 92, 106 to a transverse conveyer 68 and is discharged as first-quality flour at the spout 69, while the grits passing out at the ends of the bolters are delivered by conveyers 70, 78, 94, 107 to reciprocating sifters 72, 80, 96, 109, respectively. Clean grits from the sifters 72, 80 are delivered by a conveyer 73 to the elevator 50, and those from the sifters 96, 109 pass by conveyers 97, 110 to elevators 83, 101 respectively. The coarse grits falling from the ends of the sifters 72, 80 are collected by conveyers 73<1>, 88 and pass to the third pair of smooth rolls, while those from the ends of the sifters 96, 109 are collected by conveyers 99, 112 and pass to the fourth pair 104 of smooth rolls and the centrifugal 39, respectively. Three exhaust fans 142, 143, 144 fitted with regulating slides 12<1> remove light substances from the reciprocating sifters, and pipes 114, 115, 116 convey the blowings which fall from the ends of the sifters to the conveyers 35. The dust-laden air passes by passages 145, 146, 147 to collectors 148, 149, 150 arranged at the lower part of the mill, and the dust is delivered by collectors 151, 152, 153 carried by endless travelling chains. The different machines and conveyers are all driven by Galle chain and spur gearing from the main driving-shaft 155 and from one another.