Dec. 6.] THE NEW ZEALAND GAZETTE. 2217

pipes, and a pipe opening communication between a compressed-air supply and each of said outlet-pipes and fitted with a back-pressure valve in each branch, all combined to operate substantially as and for the purposes described with reference to Figs. 4 to 6 of the drawings. (6.) In apparatus for lining casks, barrels, and the like vessels, means for heating and supplying air, comprising a furnace or other heater having air-pipes therein, an inlet to said air-pipes from the blower or other device, and an outlet to the distributing-pipes, both inlet and outlet being of smaller diameter than the air-pipes in the heater, so as to allow the air to expand in the heater air-pipes and to pass into the distributing-pipes under practically uniform pressure, substantially as described with reference to Figs. 1 to 3 of the drawings.
(Specification, 9s. ; drawings, 4s.)

No. 13039.—4th October, 1900.—DAVID MARKS, of Sydney, New South Wales, Gentleman (assignee of Robert Gregory, of Post Office Chambers, Pitt Street, Sydney aforesaid, Mining Engineer). Improvements in apparatus for treating auriferous wash, said improvements being particularly applicable to gold-dredging apparatus.

Claims.—(1.) In apparatus for treating auriferous wash, the combination of a shoot through which the large and small stuff passes whilst being acted upon by water, and a screen or grizzly receiving the wash from said shoot, allowing the smaller portions thereof to pass through it on to the tables, and conveying the boulders and larger portions over the tables and discharging them to waste, substantially as described. (2.) In apparatus for treating auriferous wash, a screen consisting of a rope or chain belt traversing the washing-tables, passing the finer wash on to the same for treatment, and conveying the boulders and large stuff to waste, substantially as described. (3.) In apparatus for treating auriferous wash, the combination of a riffle-box, a screen, and washing-tables, whereby the wash is broken up and irrigated in passing over the riffles, and is then separated into large stuff and wash, and the large stuff conveyed to waste, whilst the wash is deposited on the tables and there treated for the separation of the gold, substantially as described. (4.) In apparatus for treating auriferous wash, the combination of the drop shoot A, a riffle-box such as B, a rope or chain conveyor screen such as D, and tables C below the same, with or without elevator F for carrying off the tailings, substantially as described. (5.) In apparatus for treating auriferous wash, a riffle-box with iron riffles and a water-service, through which box the wash passes before reaching the screen or grizzly which separates the boulders from the wash, substantially as described. (6.) In apparatus for treating auriferous wash, the combination of a drop shoot, an elevator adapted to pass the wash through it while carrying off the boulders, a tray below said elevator, and tables receiving the wash and water from said tray, substantially as described with reference to Figs. 1 and 2 of the drawings. (7.) In apparatus for treating auriferous wash, the combination of a drop shoot, a screen or grizzly, a rope or chain elevator, an irrigating-pipe above the same, a tray below the same, and tables receiving the wash and water and treating the same for the separation of the gold, substantially as described. (8.) In apparatus for treating auriferous wash, the combination with the construction of apparatus set forth in the next preceding claim of a riffle-box set between the drop shoot and the elevator, substantially as described. (9.) In apparatus for the purpose set forth, a conveyor screen or grizzly consisting of a number of endless wire ropes carried over end wheels or a barrel and connected at intervals by slats, substantially as shown in Figs. 6 and 7 of the drawings. (10.) In apparatus for the purpose set forth, a slat-and-chain belt constructed substantially as shown in Figs. 4 and 5 of the drawings.
(Specification, 9s. 6d. ; drawings, 1s.)

No. 13064.—3rd March, 1900.—JOHN DARLING, of Gallow flats, Rutherglen, Lanark, North Britain, Engineer. Improvements in and connected with the windows of railway-carriages, cabs, omnibuses, ships, and suchlike.

[NOTE.—This is an application under section 106 of the Act, the date given being the official date of the application in Great Britain.]

Description.—A screw runs lengthwise in the centre of the space of the door or frame in which the window slides. At the lower end of this screw there is a pinion in which a rack connected to a lever works. This screw is suitably connected to the lower end of the sliding window, so that in operating the lever the rack gives motion to the pinion, which in turn revolves the screw, thereby raising or lowering the window.

Claim.—The general arrangement, combination, and operation of the parts of mechanism for opening and closing the windows of railway-carriages, cabs, omnibuses, ships

and suchlike, substantially as described, and illustrated on the sheet of drawings.
(Specification, 1s. 6d. ; drawings, 1s.)

No. 13094.—26th October, 1900.—FREDERICK WILLIAM BRIGHT, of 14, South Park Avenue, Kansas City, Kansas, United States of America, Mechanic. A machine for cooling and rinsing cans of cooked food.

Claims.—(1.) In a machine for cooling and rinsing cans of cooked foods, the combination, with a chain-and-basket conveyor, of a water-tank adapted to be traversed by said conveyor, a perforated water-pipe for spraying the cans in said conveyor with water, and a trough or pan for receiving a part of said spray and conducting the water to one end of said tank, substantially as described. (2.) In a machine for cooling and rinsing cans of cooked foods, the combination, with an endless chain-and-basket conveyor, of a chute for depositing cans in the basket thereof, a dumping-cam secured to the track of said conveyor for causing said baskets successively to dump their contents at a suitable point, and an endless belt for receiving the cans so dumped and conveying them to a point outside of said machine, substantially as described. (3.) In a machine for cooling and rinsing cans of cooked foods, the combination of a chain-and-basket conveyor, comprising a pair of endless sprocket-chains and a series of baskets pivotally attached to said chains and provided at their pivotal points with anti-friction track rollers, upper and lower tracks for said conveyor for throwing a spray of water into said baskets, and a water-tank through which said baskets are carried, said tank receiving at one end a water-supply from said spray, and having at its opposite end an overflow outlet, substantially as described. (4.) In a machine for cooling and rinsing cans containing cooked foods, the combination of a chain-and-basket can-conveyor, consisting of a pair of endless chains and a series of baskets hung therefrom, a pair of sprocket-wheels for driving said chains, a shaft by which said sprockets are driven, a worm-gear rotating said shaft, having secured to the worm-shaft thereof a driving sprocket-wheel, a chain and second sprocket-wheel driven by said sprocket, a gear-wheel secured to the shaft of said pulley, a driven gear-wheel, an upper pulley secured to the shaft of said driven gear, and a short conveyor belt located below a portion of said baskets and driven by said upper pulley, substantially as described. (5.) In a machine for cooling and rinsing cans containing cooked foods, a conveyor basket, comprising, in combination, a plurality of approximately semi-annular ribs arranged so as to form a semicylindrical frame, a pair of end plates registering with said ribs, a plurality of tie-rods passing through registering perforations in said ribs and plates, and bosses on said ribs adjacent to said perforations for separating said ribs from one another, substantially as described.
(Specification, 9s. ; drawings, 3s.)

No. 13115.—26th October, 1900.—WILLIS GORMAN DODD, of 1919, Pierce Street, San Francisco, California, United States of America, Mechanical Engineer. Concentrating-tables.

Claims.—(1.) In an ore-concentrator of the described class, the combination, with the concentrating-table, of an overflow-riffle or rib arranged diagonally across the working-face thereof, and of a series of parallel riffles or ribs joined to said diagonal riffle or rib, and extending longitudinally toward the foot or tail of the table. (2.) In an ore-concentrator of the described character, the combination, with the concentrating-table, having a movement whose tendency is to carry the material fed thereon toward the foot or tail of the table, of the overflow-riffle or rib arranged diagonally across the working-face of the table, and extending from its upper end to its lower side, a series of parallel riffles or ribs extending from the diagonal riffle or rib longitudinally toward the foot or tail of the table, and of a plain unriffled surface between the ends of the longitudinal riffles or ribs and tail of the table. (3.) In an ore-concentrator of the described character, the combination, with the concentrating-table, of an overflow-riffle or rib arranged diagonally across the working-face of the table, and extending from its upper end to its lower side portion, said riffle or rib decreasing in height from its upper to its lower end, and of a series of parallel riffles or ribs extending from the diagonal riffle or rib longitudinally of the table, or toward the tail or foot of the table, said ribs or riffles being of a height corresponding with the height of the diagonal riffle or rib at the juncture of said ribs therewith. (4.) As a new article, a concentrating-table for ore-concentrators, the working-face of which is provided with a diagonal overflow riffle or rib extending across the face thereof from its upper end to its lower portion, and with a series of parallel riffles or ribs extending from the diagonal riffle or rib longitudinally of the table or toward the foot or tail thereof.
(Specification, 9s. 9d. ; drawings, 1s.)