Патент USA US2115314код для вставки
April 26, 1938. 2,115,314 w. F. J. McERLEAN ORE MILL Filed Sept. 5, 1936 ' 2 Sheets-Sheet 1 4O?‘ 20 E 9 m-éa 29 . (26 36v @%1 u i‘NVENTOR W.F.J'. McErleon. BY» ATTORNEY I April 26, 1938. 2,115,314 w. F. J. McERLEAN ORE MILL 2 Shee’rls-Sheet 2 Filed Sept. 3, 1936 V my my m/W/w ' INVENTOF? W.F'.J.McEr‘|eon. BY ATTORNEY’ Patented Apr. 26, 1938 2,115,314 . PATENT OFFICE UNITED STATES 2,115,314 I ORE MILL Wallace Ferguson James McErlean, Vancouver, British Columbia, Canada Application September 3, 1936, Serial No. 99,293 (Cl. 83-45) 4 Claims. This invention relates to an improved mill for separating and amalgamating ore. ‘ An object of the present invention is the provi sion of an ore mill in which the ore is crushed 5 and ground to separate the mineral which, in turn, is removed therefrom by amalgamation. Another object is the provision of an ore mill adapted to grind the ore into a ?ne powder to. ensure substantially complete separation of the 10 15 mineral. ‘ The ore mill 0‘ comprises an open-ended re ceptacle l0 having a bottom II with a central ori?ce l2. A collar l3 surrounding the ori?ce l2, extends upwardly into the interior of the recep~ tacle l0 and a race l4 encircling said collar, lies 5 between the latter and the side of the receptacle. The race i4 is formed with a trough l5 adja cent to and extending around the collar I3, said trough having therein a quantity of mercury. A plurality of spaced-apart frustums l6 taper- 10 Another object is the provision of an ore mill in which friction is reduced to a minimum thus ing inwardly, are adapted to rotate in the race l4 and each have at their inner and outer ends increasing the life of the grinding elements and decreasing the amount of power necessary for are held in their spaced-apart positions by a cage operation. A further object is the provision of an ore mill which may be readily adjusted to handle ores of‘diiferent qualities. A further object is the provision of an ore mill of very simple construction and which will oper ate continuously with substantially 100% chi ciency in spite of the natural wearing of parts. A still further object is the provision of a device of the character described of strong, dur 25 able construction and which may be very easily 2 spindles I1 and I8 respectively. The frustums l6 consisting of a pair of concentric bands 19 and 20 15 held together by rods 2i lying between the frus tums. These bands I9 and 20 have a number of recesses 22 and 23 opening out into the lower edge thereof and into which the spindles l1 and I8 extend. The upper portions of the recesses rest 20 on the spindles so that the bands rotate around the collar l3 with the frustums and ride clear of the race M. A U-shaped member 24 having a central bear ing 25 and a supporting member 26 having a 25 central bearing 21 are both secured by bolts 28 manufactured. ' The present invention consists essentially of an to a ?ange 29 extending around the upper end ore mill comprising a receptacle having therein a of the receptacle III. A ?oating shaft 30 is jour plurality of- spaced-apart frustums and means ' nailed in the bearings 25 and 21 and extends for rotating said frustums and at the same time downwardly into the collar l3. A pulley 3| is 30 30 applying pressure thereto to grind the crushed keyed to the shaft 30 between the bearings 25 and 21 and a disk 32 is ?xedly mounted on said ore which is supplied to the receptacle. The min eral separated from the ore by this operation is shaft above the upper end of the collar l3. The disk 32 comprises a hub 33, spokes 34 and a rim gradually worked into a trough where it amal 35 upon the upper surface of which are formed 35 gamates with mercury while the tailings are 35 radiating ribs 36. The rim 35 is substantially ?oated out of the container in a suitable manner V-shaped in cross section with its lower surface as more fully described in the following speci? 31 faced with a removable layer of rubber 38 and cation and illustrated in the accompanying draw lying in, the same plane as the upper surfaces of ings, in which the frustums Hi. This rim is pressed against the - 40 Fig. 1 is a vertical section through the ore mill, 40 frustums by a number of weights 39 formed of a Fig. 2 is a plan view of the mill with certain suitable heavy metal such as lead resting on the parts broken away, » Fig. 3 is an elevational view of the assembled ribs 36. With this construction the rubber layer 38 ensures a positive frictional drive between the frustums removed from the mill, rim 35 and the frustums l6 and the weights 39 45 Fig. 4 is a plan view of the frustums as shown 45 in‘ Fig. 3, I Fig. 5 is a fragmentary view of an alternative form of the invention, and ' Fig. 6 is an elevation of the mill and the appa 50 ratus for supplying crushed ore thereto. Referring more particularly to the drawings, A is an ore crusher and B is a chute for conveying the crushed ore to the ore mill C, the crusher A and the mill C being driven by a suitable source of power (not shown). provide the desired pressure for the grinding operation. Water is supplied to the receptacle l0 through a pipe 40. ' In use, the ore is primarily, crushed in the crusher A and then passes along the chute B 50 to the mill C. The crushed ore enters the mill through the open end of the receptacle l0 and gradually works its way beneath the frustums l6 which are rotated by the power applied to the shaft 30 through the pulley 3| and suitable driv- 55. 2,110,314 ing means. The shaft 30 rotates the disk 32 which in turn rotates the frustums l6 through the frictional contact of the rim 35 and the layer of rubber 38 with the latter. As the frustums rotate they revolve about the collar I3 and grind the ore against the race, I4. 10 mercury. At the same time water is supplied to the container through the pipe 40 and the tail ings ground ?ne enough to ?oat, are ?oated over the collar l3 out of the mill. The flow of water to the receptacle is regulated so that it ?ows at 15' any desired rate over the top of the collar. In order to prevent the ?oating tailings from being trapped between the outer ends of the frustums and the wall of the receptacle, the weights 3! are mounted on the ribs 36 to allow the water to flow 20 therebeneath to the outlet. The number of weights may be varied to suit the ore being handled and the layer of rubber 38, when it becomes worn out, may be easily changed. As the frustums wear away, the disk 32 auto 26 matically lowers itself to compensate for'this wear and the mill thus operates continuously at substantially 100% ei?ciency throughout the life time of ,its various parts. This. wearing of the frustums is greatly reduced by reducing the con 30 tacting of metal against metal. The rubber 38 provides a frictional drive without the contacting of metal against metal and the frustums are sepa rated from each other by the bands I! and .20. If desired, a layer of ‘rubber H (see Fig. 5) may be placed over the surface of the race It. This sec ond layer of rubber which may be easily changed from time to time, separates the frustums from the race thus further reducing wear. The ore is very; finely ground in the present ore mill by the relatively large surfaces of the frus tums extending across the full width of the race ll. ‘This ore remains in the device and is ground > and reground until it is ?ne enough to ?oat thus ensuring practically all the mineral being re moved therefrom, and since the latter cannot ?oat, it remains in the container until it ?nally reaches the mercury in the trough. This ore mill is so complete and compact that it may be carried from place to place to extract minerals from ores in places where, up to the present time, it has been impractical to operate owing to the high cost of the‘ known types of ma chinery and the high .cost of transportation. There are many small properties containing val uable minerals which have not been touched be cause of the high cost of production with the pres ent machinery. 1. An ore mill comprising a receptacle, a plu rality of frustums rotatably mounted in the re ceptacle, supporting members mounted on said receptacle and having bearings centrally thereof, The ground ore is‘ , gradually worked to the trough l5 owing to the fact that the frustums taper inwardly and the mineral contained therein amalgamates with the 40 What I claim as my invention is: ‘ From the above it will readily be seen that a portable oremill has been provided which will extract practically all the mineral from the ore, in which the wearing of parts has been reduced a?oating shaft journalled in said bearings, means for rotating the shaft, a disk ?xedly mounted on said shaft having a rim with its lower surface faced with rubber, radial ribs formed on the up per surface of the rim, at least one weight mount ed on said ribs adapted to press the rim into frictional contact with the frustums and to ap— ply pressure thereon to grind ore supplied to the receptacle, means for extracting the mineral from the ore and means for removing the tail ‘ings from the receptacle. 15 2. An ore mill comprising a receptacle, a race mounted in said receptacle having its surface covered with a layer of rubber, a plurality of frustums rotatably mounted in the race, a ?oat 20 ing shaft mounted centrally of the receptacle, means for rotating the shaft, a disk ?xedly mounted on said shaft having a rim with its lower surface faced with rubber, radial ribs formed on the upper surface of the rim, at least one. weight mounted on said ribs adapted to press the rim into frictional contact with the frustums and to apply pressure thereon to grind ore sup plied to the receptacle, a trough in said receptacle containing mercury, said mercury being adapted 30 to extract the mineral from the ground ore by amalgamation, and means for removing the tail ings from the receptacle. 3. An ore mill comprising a receptacle with a bottom having a central ori?ce therein, a collar surrounding vsaid ori?ce and extending upwardly into the receptacle, a race encircling the collar, a plurality of spaced-apart frustums rotatably mounted in said race, a ?oating shaft mounted centrally of the receptacle, means for rotating the 40 shaft, a disk ?xedly mounted on the shaft above the collar, said disk having a rim with its lower surface faced with rubber, radial ribs formed on the upper surface of the rim, atleast one weight mounted on said ribs adapted to press the rim into frictional contact with the frustums and to apply pressure thereon to grind ore supplied to the receptacle, means for extracting the mineral from the ore and means for supplying water to the receptacle to ?oat the tailings. over the top 50 of the collar\ out of the receptacle. . 4. An ore mill comprising a receptacle with a bottom having an ori?ce therein, a collar sur rounding said ori?ce and extending upwardly into the receptacle, a race surrounding the collar, a ; plurality of frustums situated adjacent to and spaced from each other rotatably mounted in the race, said race having a trough adjacent to the inner ends of the frustums, a ?oating shaft mounted centrally of the receptacle, means for rotating the shaft, a disk mounted on said shaft to a minimum and which will operate continu- > having a rim with its lower face lying in the plane ously with substantially 100% e?iciency in spite of the upper surfaces of the frustums, a weight of the natural wear of parts. mounted on the rim adapted to press said rim ,Various modi?cations may be made in this in into frictional contact with the frustums and to vention without departing from the spirit thereof apply pressure thereon to grind ore supplied to or the scope of the claims, and therefore the exact the receptacle, means in the trough for extracting forms shown are to be taken as illustrative only the mineral from the ore by amalgamation, and and not in a limiting sense, and it is desired that means for supplying water to the receptacle to only such limitation shall be placed thereon as ?oat the tailings over the top of the collar out of 70 are disclosed in the prior art or are set forth in the receptacle. ‘ the accompanying claims. WALLACE FERGUSON JAMES McERLEAN.