822
THE NEW ZEALAND GAZETTE.
[No. 17

degree of oxidation, substantially as and for the purpose
set forth. (5.) The application of the process specified in
claim 1 to the manufacture of first-class conducting pro-
ducts by treating natural compounds or earths containing
silica, alumina, magnesia, lime with a metallic oxide, and
melting said bodies, earths, or compounds in presence of
oxygen, substantially as and for the purpose set forth.
(6.) The application of the process specified in claim 1 to the
manufacture of first-class conducting products by treating
silica, alumina, magnesia, or lime or a compound of said
bodies in a pure state, mixing the same with a metallic oxide,
and melting the mixture in presence of oxygen, substantially
as and for the purpose set forth. (7.) The method of realising
the melting in presence of oxygen which consists in mixing
with the oxide and the materials added thereto a body
capable of producing by melting the oxygen required to avoid
reduction of the oxide, such as saltpetre, dioxide of manganese,
sulphate of zinc (ZnSO₄), and the like. (8.) The method
of carrying the process into practice which consists in varying
the resistance and conductivity of the resulting product
as desired, and in previously determined proportions, this
result being attained by varying in the mixture the propor-
tions of oxide becoming conducting by melting and the
non-conducting bodies. (9.) The several applications of the
products obtained by the process and particularly in the shape
of cast or moulded materials for heating purposes by electric
resistance, the manufacture of ceramic products either by
adding a natural or plastic agglomerating material or by
substituting for the latter a portion of the product itself
in the form of fine powder, the manufacture of ceramic bodies
composed of parts having different conductibilities, and
being nevertheless of homogeneous composition, and the like.
(10.) As new industrial products, the conductors of different
degrees of conductibility obtained by the said processes.

(Specification, 7s.)

No. 23922.—18th January, 1908.—PERCY HENRY SHAILER,
of The Carlton, City Road, Auckland, New Zealand, Engi-
neer; and WALTER SULLY, of Teddington Hall, Teddington,
Surrey, England, Gentleman. Improvements in automatic
couplings.

Claims.—(1.) An automatic coupling for railway-vehicles in
which each vehicle is provided within an arrow-headed hook,
a socket for said hook consisting of a fixed portion and a
portion moveable in a vertical plane, and means for lifting
the hook on uncoupling all said parts being mounted on a
central spring buffer-rod, substantially as described. (2.) An
automatic coupling as in claim 1 in which the arrow-headed
hook and moveable portion of the socket are pivotally mounted
on the same pin in the head of the buffer-rod, substantially
as described. (3.) An automatic coupling as in claim 1 in
which the lifting of the arrow-headed hook or uncoupling is
effected by the lifting upwards of the edge flap of the fixed
portion of the socket against which the lower fang of the
arrow-headed hook on the opposite vehicle on couplings rests,
substantially as described. (4.) In an automatic coupling
of the type described, a central spring-mounted ledge the face
of which is enlarged and made convex so as to act as a buffer,
substantially as described.

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

No. 23931.—21st February, 1907.—MAX ROSENTHAL, of
24 Michaelkirchplatz, Berlin, S.O. 16, Germany, Merchant.
Heating-apparatus specially adapted for heating rooms.

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

Claim.—A heating-apparatus consisting of a reflector
heated by the flame of a bunsen burner and throwing the
rays of heat downwards, and a shade covering the same,
characterized by this that the shade is provided with an in-
sulating cover i and air-jacket k for preventing the rays of
heat from passing upwards and overheating the burner
tube a passing through the shade into the heating-space e.

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

No. 23953.—30th January, 1908.—JOHN BAILLIE, of
Palmerston North, New Zealand, Engine-fitter. An improved
construction of tile for boiler-furnaces.

Claim.—A tile for boiler-furnaces constructed with one
end having an overhanging portion with an undercut-opening
beneath adapted to receive one member of a T-iron crosspiece,

and for its overhanging portion to extend across the face
thereof, and having its other end formed with an extending
portion upon its lower half adapted to pass and fit beneath
the crosspiece of a T iron, substantially as and for the pur-
poses specified.

(Specification, 2s. 6d.; drawing, 1s.)

No. 23959.—28th January, 1908.—BENJAMIN CRAWFORD,
of St. Mary’s Road, Ponsonby, Auckland, New Zealand,
Plumber. A combined smoke-flue auxiliary fire-box and boiler
to work with range-fire or with separate fire, or with gas or
electricity, or the like.

Claims.—(1.) The combined smoke-flue auxiliary fire-box
and boiler specified, the same having, in combination, a flue
surrounded by water-jackets, said flue being fitted with
auxiliary fire-grate formed of horizontal bars with perforated
fire-door at front, or hopper with lid perforated and vertical
fire-bars, said water-jacket being connected to supply-tank
and hot-water reservoir by supply and delivery pipes, said
jacket also being connected to return-pipes, said return-pipes
passing through the water-jacketed flue or being connected
to pocket formed within such flue, sludge-cock provided for
said pipes, and stopcock on return-pipe, for the purpose set
forth, as described and illustrated. (2.) In the combined
smoke-flue auxiliary fire-box and boiler specified covered by
claim 1, the formation of water-jackets as shaped within and
around the exit-flue in the manner and for the purpose set
forth, as described and illustrated. (3.) In the combined
smoke-flue auxiliary fire-box and boiler specified covered by
claim 1, the auxiliary fire-grate with horizontal fire-bars
and perforated fire-door fitted thereto, in the manner and
for the purpose set forth, as described and illustrated.
(4.) In the combined smoke-flue auxiliary fire-box and boiler
specified covered by claim 1, the auxiliary fire-grate formed
within hopper with vertical fire-bars, and perforated lid to
hopper, said hopper having suitable lugs for fitting the sides
of said auxiliary fire-grate, for the purpose set forth, as de-
scribed and illustrated. (5.) The construction, arrangement,
and combination of the different parts specified, for the purpose
set forth, as described and illustrated.

(Specification, 5s. 6d.; drawing, 2s.)

No. 23970.—5th February, 1908.—WILLIAM ERNEST
HUGHES, of Queen’s Chambers, Wellington, New Zealand,
Registered Patent Agent (the nominee of Linotype and
Machinery, Limited, of 188 and 189 Fleet Street, London,
England—the assignees of John Glennie Holbourns, of 188
and 189 Fleet Street aforesaid, Linotype-operator, and Henry
Alexander Longhurst, of 1 Bethune Road, Stoke Newington,
Middlesex, England, Engineer). Improvements in linotype
machines.

Claims.—(1.) The combination in a linotype machine of
means for locking the escapement-levers, means for disen-
gaging the escapement-rods from the escapement-levers and
holding them disengaged, means for locking the keyboard,
and means common to the said three means for actuating
them by a single movement in one direction, and for reversing
them by a reversal of the said movement. (2.) The com-
bination with the matrix-magazine of a linotype machine
capable of being detached from and replaced upon the same
and having a series of escapement-levers of rock-shaft parallel
therewith, and adapted by having a co-operating face to lock
the said levers when it is turned in one direction, and to
unlock them when it is turned in the opposite direction, a
spring turning the shaft to unlock them, and a detent to hold
the shaft in the locked position. (3.) The combination in a
linotype machine of reciprocating key lever-rods, faces in or
on them, a rock-shaft having a face co-operating with the said
faces to either lock or unlock the said rods according to the
direction in which it is turned, escapement-rods, escapement-
levers actuated by the said rods and from which levers the
said rods are detachable, a rock-shaft, connections between the
latter and the escapement-rods adapted to disengage the said
rods from the said levers and to re-engage them according to
the direction in which the said rod is turned, a matrix-maga-
zine having escapement-levers, a rock-shaft having a face co-
operating with the said levers to lock or to unlock them
according to the direction in which it is turned, a spring
tending to turn the said shaft to unlock the said levers, a re-
ciprocating bar to actuate the said rock-shafts, connections
between them and the said bar, and means for actuating it.
(4.) The combination in a linotype machine of means for
disengaging the escapement-rods from the escapement-levers