1844
THE NEW ZEALAND GAZETTE.
[No. 66

screen, an apron therefor, a shute from the apron, a shute from the end of the screen, a motor, means for operating the bucket-chain therefrom, a winch, means for operating same, and means for revolving the bed-plate on the truck, substantially as specified and illustrated. (3.) In a machine for the purpose indicated, the combination of a truck, a bed-plate revolvable thereon, a tumbler-framing fixed upon the bed-plate, a bucket-ladder pivoted in the framing, top and bottom tumblers, a bucket-chain, buckets thereon, picks upon the bottom tumbler-shaft, means for receiving and carrying away material raised by the buckets, a motor, means for operating the bucket-chain therefrom, a winch, means for operating same, and means for revolving the bed-plate on the truck, substantially as specified and illustrated. (4.) In a machine for the purpose indicated, the combination of a truck, a bed-plate revolvable thereon, a tumbler-framing fixed upon the bed-plate, a bucket-ladder pivoted in the framing, top and bottom tumblers, a bucket-chain, buckets thereon, means for receiving and carrying away material raised by the buckets, a motor, means for operating the bucket-chain therefrom, a winch, means for operating same, and means for operating the bed-plate on the truck, substantially as described and illustrated. (5.) In a machine for the purpose indicated, the combination of a bed-plate revolvable upon a platform, a tumbler-frame fixed upon the bed-plate, a bucket-ladder pivoted to the frame, top and bottom tumblers, a bucket-chain, and buckets, means for revolving the bed-plate upon a central pivot, the said platform being supported upon a carriage, pontoon, or the like, substantially as described. (6.) In a machine for the purpose indicated, the combination of a platform, a bed-plate, friction-rollers supporting the bed-plate upon the platform, a king-post, and means for revolving said bed-plate upon the runners about the king-post, substantially as specified and illustrated.
(Specification, 9s.; drawings, 4s.)

No. 15593.—31st October, 1902.—GEORGE WARD WRIGHT, of 82, William Street, Melbourne, Victoria, Mining Engineer. Process and apparatus for concentrating ores.*

Claims.—(1.) The employment of induced draught for the separation of metals and minerals from their ores, and also in the separation of one metal or mineral from another. (2.) A process for concentrating ores in which the pulverised ore is screened and allowed to fall through a chamber or chambers through which or a portion thereof a suction draught is created in such a manner as to draw away dusty matter or gangue from the falling body, substantially as and for the purposes set forth. (3.) A process for concentrating ores in which the pulverised ore is screened and allowed to fall through a chamber or chambers through which or a portion thereof a suction draught is created in such a manner as to draw away dusty matter or gangue from the falling body, the residue, consisting of the concentrated ore, being then arranged to fall into a trough, substantially as and for the purposes set forth. (4.) A process for concentrating ores in which the pulverised ore is screened and allowed to fall through a separating-box or separating-boxes and there subjected to an induction draught obtained from a fan or like displacement mechanism, which draws the finest gangue or light refuse material through a valve-box communicating with the before-mentioned chambers, the said dust and gangue being deposited in valve-box and conducted to a tailings shoot or dump by induced air-current, substantially as and for the purposes set forth. (5.) A process for concentrating ores in which the pulverised ore is screened and allowed to fall through a chamber or chambers through which or a portion thereof a suction draught is created in such a manner as to draw away the dusty matter or gangue from the falling body, the balance of the material that may have escaped from the screening being led away by an elevator, reground in a mill, and returned to the screen, the concentrated ore then falling into a receiver below according to its different grades, substantially as and for the purposes set forth. (6.) In apparatus for concentrating ores, in combination, a chamber or chambers through which the pulverised ore is fed, a passage or passages leading to or through such chamber or chambers, and means for creating an induction draught to induce or draw away the fine dust or gangue, substantially as and for the purposes set forth. (7.) In apparatus for concentrating ores, in combination, a screening-device as B, a chamber or chambers as C in communication with passages H and K and dust-collector I leading to fan or other exhaustive mechanism, feeding-boxes as D beneath C, a separator box or boxes E, with valve-box L, both in communication through passage J with a fan or other exhaustive mechanism, receiving-trough as F, substantially as and for the purposes set forth. (8.) In apparatus for concentrating ores, in combination, mill-rollers as A from whence the pulverised ore is conducted, a shaking, revolving, or rotary screen as B,

an elevator as N, chambers as C, feeding-boxes as D, and an induction-draught passage or passages leading from fans or the like displacement mechanism, substantially as and for the purposes set forth, and as illustrated in the drawings. (9.) The several parts set forth and illustrated on the drawings comprising my apparatus for the concentration of ores, substantially as and for the purposes set forth.
(Specification, 5s.; drawing, 1s.)

No. 15604.—5th November, 1902.—ERSKINE BOWMAR, of Nottingham Meadows, Gore, New Zealand, Farmer. An improved canister for sowing turnip, rape, and other seeds.*

Claims.—(1.) A canister used for sowing seed constructed with a horizontal and vertical chamber, as shown in drawings and described. (2.) A canister used for sowing seed constructed with a horizontal and vertical chamber having an internal worm rightly attached inside horizontal for the purpose of feeding seed to discharge-holes, substantially as shown in drawings and described. (3.) A canister used for sowing seed constructed with a double horizontal chamber and a single vertical chamber having a right- and left-hand worm rightly attached to the inside of periphery of horizontal for the purpose of feeding seed up to discharge-orifice, substantially as shown in drawings and described. (4.) A canister used for sowing seed constructed with a double horizontal and two vertical chambers having right- and left-hand worms rightly attached to the inside of horizontal chamber for the purpose of feeding seed to the discharge-orifices, substantially as shown in drawings and described. (5.) A canister used for sowing seed constructed with a single horizontal and two vertical chambers having right- and left-hand worms rightly attached to the inside of horizontal for the purpose of feeding seed up to discharge-orifices, substantially as shown in drawings and described.
(Specification, 2s. 3d.; drawing, 1s.)

No. 15650.—19th November, 1902.—UNITED SHOE MACHINERY COMPANY, of Paterson, State of New Jersey, United States of America, a corporation duly organized under the laws of the said State of New Jersey, and having their principal place of business at 205, Lincoln Street, Boston, Massachusetts, United States of America (assignees of Benjamin Franklin Mayo, of Salem, Essex, Massachusetts aforesaid, Inventor). Improvements in or relating to machines for rounding or trimming the soles of boots and shoes.*

Extract from Specification.—The sole-rounding machine embodying our invention, hereinafter specifically described, comprises a pattern for determining the path of movement of the rounding-knife, and a rounding-knife mounted upon a carrier pivotally mounted upon a support. It also comprises means for oscillating the carrier to bring it into such a position with relation to the edge of the pattern that the pull or thrust on the knife is always substantially tangential to the curve of the pattern. By so oscillating the carrier the pull or thrust on the knife does not tend to move the knife away from the pattern when passing into the curves of the shank portion or when passing around the heel and toe, and also the knife, or the guide in contact with the pattern, is allowed to move easily inwardly or outwardly, and follows the pattern without exerting an objectionable pressure thereon. The means for oscillating the carrier which we have provided comprises a cam and connections between the cam and carrier, and these connections are so arranged that substantially the entire force exerted by the cam is transmitted to the carrier in a direction substantially at right angles to a line connecting the point about which the carrier oscillates and the point at which the force is applied. By the use of a cam the carrier can be oscillated to cause it to assume the desired positions during the sole-rounding operation, and by arranging the connections between the cam and carrier as above stated the power used in running the machine is applied to the best advantage, and the machine runs easily and smoothly. It is desirable in sole-rounding machines to provide means independent of the pattern for causing the knife to travel in a path corresponding approximately to the contour of the pattern, as thereby the inward and outward movements in relation to that path of the knife, or of the guide in contact with the pattern, due to the varying curvatures of the pattern are less in extent, the pressure of the knife or guide on the pattern is more uniform, and the knife or guide more easily follows the pattern. To accomplish this result we have provided a cam for imparting inward and outward movements to the carrier, which cam operates with the cam and connections hereinbefore referred to for oscillating the carrier to so actuate the carrier that the knife mounted thereon is moved in a path approximating to the contour of the pattern, and in order to allow the knife,