JULY 9.] THE NEW ZEALAND GAZETTE. 1877

No. 24295.—14th April, 1908.—DAVID SPEIRS, of Island Block, near Lawrence, New Zealand, Dredge Hand. Improved hot-well for separating oil from the water from condenser.

Claims.—(1.) In hot-wells, the dividing same into several compartments for separating the oil or grease from the water by trap or inverted-siphon action, taking the water from below and delivering it at a higher level to the next tank, all substantially as described, and as explained, and as illustrated in the drawing. (2.) In combination, in a hot-well for condensing-engines, the divisions and general apparatus set forth for separating the water and the oil each for reuse, all substantially as set forth. (3.) The hot-well of a condensing-engine divided into settling-compartments for separating the oily substances from the water, all substantially as set forth.

(Specification, 1s. 9d.; drawing, 1s.)

No. 24382.—9th May, 1908.—THOMAS HUME AUSTIN, of De Carle Street, St. Kilda, Dunedin, New Zealand, Pattern-maker (nominee of William K. Austin, of New York, United States of America). Improvements in rotary engines.

Claims.—(1.) In rotary steam-engines, the method of grouping the cylinders of each size, in three, of a large centre one and two small side ones, with an eccentrically situated rotary piston-head furnished with balanced sliding-blocks, all substantially as set forth, and as illustrated in the drawing. (2.) In combination in a rotary engine, the reversing-gear for diverting the steam into the usual exhaust-ports, with an eccentrically placed rotary piston-head and spring, steam-balanced blocks for retaining the steam till desired, all substantially as set forth. (3.) In combination, a balanced rotary engine with valves for instantly reversing the same, and a system of pipes and valves for directing the steam into other than the smallest cylinders in case of need, all substantially as shown and set forth. (4.) In combination in a balanced rotary engine, the system of self-closing packing as set forth, tightened by steam-pressure, with the steam-balanced sliding-blocks kept steam-balanced, all substantially as set forth. (5.) Groups of two equal cylinders instead of the three shown, all substantially as described and as explained.

(Specification, 3s. 6d.; drawing, 2s.)

No. 24390.—13th May, 1908.—FRANK COTTON, of Hornsby, near Sydney, New South Wales, Australia, Engineer. An improved method of and means for burning fuel for firing steam-boilers.

Claims.—(1.) The process of burning fuel for heating a steam-boiler which consists in top-loading the fuel into a closed-bottom shaft-furnace, blowing into the mass of said fuel a blast of air with superheated steam to effect complete combustion of the fuel in said furnace, leading the incandescent gases from the top of the fuel-bed direct to the flues and fire-tubes of the boiler, and removing the excess of ashes from the bed of the furnace. (2.) Producing completely oxidised incandescent gases for firing a steam-boiler by blowing a blast of air with superheated steam into and up through a deep bed of fuel contained in a chamber having a closed bottom and a top-gas-emission flue. (3.) A furnace for the purposes set forth, consisting of a vertical chamber having top-fuel-loading and bottom-ash-removing vents and top-gas-emission flue, which chamber is adapted to carry a deep bed of fuel and is fitted with tuyères for delivering a blast of air and superheated steam into the body of live fuel therein. (4.) A stack-furnace for a steam-boiler wherein all the air required for complete oxidation of the fuel is supplied through tuyères blown by jets of superheated steam which direct it into the bed of live fuel in said stack, and wherein also incandescent gases are conveyed from above the fuel-bed into a flue which leads them to the heating-surfaces of the boiler.

(Specification, 7s. 6d.; drawing, 2s.)

No. 24401.—16th May, 1908.—FREDERICK DE JERSEY CLERE, of 86 Lambton Quay, Wellington, New Zealand, Architect. Improvements in constructional brick and steel or iron work.

Claims.—(1.) In constructional work of the class described, the employment of bricks having grooves dividing one face thereof into equal parts, and vertical steel rods around which the bricks are built, the grooves of opposing bricks forming holes for the said rods, as set forth. (2.) In constructional work of the class described, the employment with bricks and rods described in claim 1 of shortened bricks formed by cutting off one part of said bricks at their first groove, as set forth. (3.) In hollow walls of the class described, the employment of steel rods and stretchers composed of bricks divided by grooves into equal parts and arranged to overlap longitudinally, and closers opposing the overlapping ends of the bricks, as set forth. (4.) In a screen-wall of the class described, strengthening-pillars composed of steel rods and bricks divided by grooves into equal parts, and forming in alternate courses headers in the wall, as set forth. (5.) In constructional work of the class described, the employment of a brick having rectangular grooves dividing its face into equal parts, as set forth. (6.) The combination and arrangement of parts comprising the improvements in constructional brick and steel or iron work, substantially as and for the purposes set forth, and illustrated in the drawing.

(Specification, 3s. 9d.; drawing, 1s.)

No. 24409.—20th May, 1908.—JOSEPH BARTLETT DAVIES and HARCOURT BELL, of No. 330 Flinders Lane, Melbourne, Accountant, and No. 12 Sturt Street, South Melbourne, Engineer, respectively, Victoria, Australia. Improvements in a machine for forming enlarged or extended heads upon nails and the like.

Claims.—(1.) In a machine for forming enlarged or extended heads upon nails and the like, the combination with a series of races adapted to feed the nails, of a series of reciprocating-gates, one for each race, having inclined channels adapted to alternately correspond with the bottom of the said races leading to the tubes through which the nails pass and moving upon a face-plate, substantially as described. (2.) In a machine for forming enlarged or extended heads upon nails and the like, the combination with a series of races adapted to feed the nails, of a series of reciprocating-gates, one for each race, having inclined channels adapted to alternately correspond with the bottom of the said races leading to the tubes through which the nails pass and moving upon a face-plate, the said races being turned at the bottom in the direction of the reciprocating movement of the said gates, substantially as described. (3.) In a machine for forming enlarged or extended heads upon nails and the like, the combination with tubes through which the nails pass to the plungers, of spring clips for holding the same in place, substantially as described. (4.) In a machine for forming enlarged or extended heads upon nails and the like, the combination with covers over the spring jaws through which the plungers force the nails, of means for locking the same in place consisting of a pivoted locking-bar having notches at each end engaging projecting headed pins with a wing-nut in the centre on the pivot-screw so that tension may be applied thereto, substantially as described. (5.) In a machine for forming enlarged or extended heads upon nails and the like, the combination with a disc-magazine having a series of inclined races leading therefrom, of an escapement-device arranged one for each race, consisting of a spring finger bearing upon the top of the race, and a pin projecting upwards through a hole in the bottom of the race, both the spring fingers and the upwardly projecting pin being attached to a rocking-shaft so that they alternately obstruct the passage of the discs, substantially as described. (6.) In a machine for forming enlarged or extended heads upon nails and the like, the combination with a series of races leading from the disc-magazine and curved at the bottom from an inclined to a horizontal position, of a series of pawls or fingers, one for each race, adapted to move up and down within the open slots of the said races and feed the discs around the said curves of the said races, substantially as described. Here follow eight more claims.

(Specification, £1; drawing, 6s.)

No. 24413.—20th May, 1908.—CHARLES WESLEY NANCE, of No. 348 Oxford Street, Paddington, Sydney, New South Wales, Australia, Provision-merchant. A process serviceable with apparatus for the tanning and treatment of hides and skins.

Claims.—(1.) In an exhaustion process serviceable with apparatus for the tanning and treatment of hides and skins with deoxygenized tanning-liquors of varying densities, and for drying the leather, the use, in combination with each