No. 27237.—3rd February, 1910.—ELIAS ELKENRIES, of
110 Nassau Street, New York, United States of America,
Electrical Engineer. Method of and means for manufacturing
metal pipe and tubing.

Claims.—(1.) That improvement in the art of electrically
uniting adjacent metallic surfaces which consists in subjecting
such surfaces to be united to the action of a suitable direct,
alternating, or other electric-heating current confined wholly
to those portions of the metal adjacent to the line of union,
and preferably by three pole contacts, fixed or stationary,
sliding or rotary.... (4.) That improvement in the art
of forming tube from hot tube-skelp which consists in aug-
menting the residual heat in newly formed hot skelp by raising
the edges of the hot tube-skelp to welding-temperature and
welding said edges together.... (12.) In an apparatus
for electrically uniting adjacent metal surfaces, the com-
bination with contact-means, preferably a three-pole contact
device, fixed or stationary, sliding or rotary, for confining the
action of the current wholly to those portions of the metal
adjacent to the line of union, and a suitable source of direct,
alternating, or other electric-heating current electrically
connected with said contact-means in such a manner as to
assure the confinement of the current to the areas specified.
[NOTE.—Here follow seven other claims.]
(Specification, £1.)

No. 27520.—2nd April, 1910.—HERBERT EDWARD TERRICK
HAULTAIN, Professor of Mining in the University of Toronto,
Ontario, Canada; and JAMES WILLIAM MOFFAT, Mining
Engineer, of 366 Sackville Street, Toronto aforesaid. A
process of and apparatus for reducing metallic-oxide ores.

Claims.—(1.) A process of reducing metallic-oxide ores
which consists in passing ore through a reduction-chamber
containing a reducing-gas, and burning surplus reducing-
gas in the reducing-chamber outside the ore.... (4.) A
specific manner of carrying out the process set out in the
preceding claims in which the reducing-atmosphere is produced
by introducing pulverised carbon into the showered ore
intermediate the bath of molten metal and the point of
introduction of the ore.... (7.) A process of reducing
metallic-oxide ores which consists in continuously showering
finely divided ore through an unobstructed chamber directly
into a bath of the molten material heated by electric energy,
introducing pulverised carbon into the shower intermediate
the surface of the bath and the point of introduction of the
ore, and gradually withdrawing the molten metal from the
bath at a point sufficiently remote from the shower to avoid
the immediate withdrawal of the newly smelted metal.
[NOTE.—Here follow six other claims.]
(Specification, 9s. 6d.)

No. 27524.—7th April, 1910.—ALEXANDER JOHN AR-
BUCKLE, of 1 Main Street, Belgravia, near Johannesburg,
Transvaal, Mechanical Engineer. Improvements in apparatus
for treating crushed-ore products for the recovery of the
metal-contents thereof.

Claims.—(1.) In apparatus or plant for treating crushed-ore
products for the recovery of the metal-contents thereof, the
combination with a settling or dewatering vessel of one or
a plurality of sectional screw conveyors arranged in sectional
intercommunicating casings, substantially as described and
shown.
[NOTE.—Here follow four other claims.]
(Specification, 10s. 6d.)

No. 27556.—14th April, 1910.—ALFRED HENRY WILLIAMS,
of King William Road, Hyde Park, South Australia, Store-
keeper. Improvements in the manufacture of incandescent
mantles for gas-lighting.

Claims.—(1.) The method of producing an incandescent
mantle which consists in dipping the impregnated and burnt-off
stocking in petroleum oil, then drying it, then dipping it in
a bath consisting of a mixture of collodion, alcohol, olive oil,
and spirits of camphor, then drying it, then dipping it in a
solution of gelatine, and finally drying it, substantially as
described.
[NOTE.—Here follow four other claims.]
(Specification, 3s.)

No. 27584.—19th April, 1910.—HERMAN WILLEM KNOTTEN-
BELT, of Rue Defacqz 55, Brussels, Belgium, Manufacturer.
Improvements in petroleum and shale oils.

Claims.—(1.) The improved process of treating petroleum
and shale oils consisting in separating by distillation fractions
suitable after treatment as substitutes for turpentine and for
illuminating purposes, and in treating the lighter fraction with
nitric oxide, and in treating the heavier fraction with a solution
of ammonia carrying litmus, substantially as described, for
the purpose of obtaining an approximately odourless light
spirit and a higher percentage of illuminating-oil.
[NOTE.—Here follow six other claims.]
(Specification, 10s.)

No. 27604.—18th April, 1910.—ALEXANDER STORRIE, of
Invercargill, New Zealand, Engineer and Implement-maker.
Means of and apparatus for inspecting vacuum or air tubes
in milking-machinery while working.

Extract from Specification.—I make a glass protected as in
sight feed-glasses and somewhat like the protected glasses
well known in milk-tubes, but place these in the tubes where
it is essential that milk should not pass or get in to.
[NOTE.—The above extract from the specification is inserted in place
of the claims.]
(Specification, 2s.)

No. 27636.—8th May, 1909.—FRANCOIS DALLE MAGNE, of
Pasajes, Spain, Civil Engineer; and HENRI DALLE MAGNE, of
Pasajes aforesaid, Civil Engineer. Improvements in ore-
concentrating and -separating apparatus.

[NOTE.—This is an application under section 98 of the Act, the date
given being the official date of the application in France.]

Claims.—(1.) An apparatus of the type described in the princi-
pal patent, wherein the variable circular oscillating movement of
the grooved platform can be varied as desired by means of
eccentrics mounted on the transverse-shafts and connected
together by cranks and a coupling-rod, one of these eccentrics
being given an oscillating movement from the motor-shaft,
the setting-angle of the first eccentric being adjustable with
regard to the actuating-crank which allows of varying the
form of movement communicated to the platform.
[NOTE.—Here follows one other claim.]
(Specification, 3s. 3d.)

No. 27711.—13th September, 1909.—WILLIAM ASTON, of
44 Charles Street, Footscray, Victoria, Australia, Furnaceman;
and JOHN ASTON, of 44 Charles Street aforesaid, Clerk.
Improvements in air-bridges for furnaces.

[NOTE.—This is an application under section 98 of the Act, the date
given being the official date of the application in Australia.]

Extract from Specification.—According to this invention the
bars 1 of the air-bridge are inclined and formed on their faces
with a dovetail channel 2 into which is removably fitted a
correspondingly shaped firebrick facing 3, portion of which
extends forwardly from said bars and projects laterally suffi-
ciently to protect the sides of same.
[NOTE.—The above extract from the specification is inserted in place
of the claims.]
(Specification, 4s. 6d.)

No. 27730.—12th May, 1910.—FRANCIS ARTHUR RICH, of
Remuera, Auckland, New Zealand, Civil Engineer. An im-
proved stove, oven, and hot-water heater for use with gaseous
and vapourised fuels.

Claims.—(1.) The improved stove, oven, and water-heater
combination consisting of the fire-box with water-pipes placed
above, below, or beside the burners therein, deflector for
deflecting heat into flue leading to other flue surrounding oven-
chamber, and exhaust-outlet from said other flue, said fire-
box and other flue around said oven-chamber having in-
sulating chambers around them respectively, said oven-
chamber having door fitted to cover it and lids to cover said
burners in the manner and for the purpose set forth, as de-
scribed and illustrated. (2.) In the improved stove, oven, and