APRIL 2.] THE NEW ZEALAND GAZETTE. 941

metal or other springy material, one end of which is secured
to a post or board while the other end is adapted to be sprung
into and held by clips secured also to the post or board, as
specified.
(Specification, 2s.; drawings, 1s.)

No. 16131.—25th March, 1903.—LEWIS PETER FORD, of
32, Victoria Street, Westminster, London, England, Gentle-
man. Mould for the manufacture of large blocks of artificial
stone.

Claims.—(1.) In the manufacture of artificial stone, where
use is made of the expanding property of lime or cement to
obtain compression, the use of a cylindrical mould. (2.) In
a mould for the manufacture of blocks of artificial stone,
where use is made of the expanding property of lime or
cement to obtain compression to solidify the blocks, the
combination of a cylindrical body, means for rigidly closing
the same, detachable ends, and fine perforations in the body
and ends, substantially as set forth. (3.) In a mould for the
manufacture of blocks of artificial stone, where use is made
of the expanding property of lime or cement to obtain
compression to solidify the blocks, the combination of a
cylindrical shell, means for rigidly closing the same,
perforations in said shell, detachable ends, an inner lining
made of thin metal, and finer perforations in said inner
lining, substantially as set forth. (4.) In a mould for
the manufacture of blocks of artificial stone, where use is
made of the expanding property of lime or cement to obtain
compression to solidify the blocks, the combination of a
cylindrical shell, means for rigidly closing the same, per-
forations in said shell, detachable ends, means for securing
the ends to the cylindrical shell, perforations in said ends, a
lining made of thin metal, and finer perforations in said
lining, substantially as set forth. (5.) In a mould for the
manufacture of blocks of artificial stone, where use is made
of the expanding property of lime or cement to obtain com-
pression to solidify the blocks, the combination of a cylindri-
cal shell, a butt-joint in said shell, means for rigidly closing
said butt-joint, perforations in said shell, detachable ends,
a thin metal lining, finer perforations in said lining arranged
more closely than those in the shell, and flanges on said lining
adapted to be closed by the butt-joint of the shell, substantially
as set forth. (6.) In a mould for the manufacture of blocks
of artificial stone, where use is made of the expanding pro-
perty of lime or cement to obtain compression to solidify
the blocks, the combination of a cylindrical shell, a butt-
joint in said shell, fastening-means attached to the meeting
edges of the shell, bolt-holes in the fastening-means in close
proximity to the shell, bolts and nuts by which such fasten-
ing-means are secured together, a recess in said fastening-
means adjacent to the said butt-joint, projections and re-
cesses formed on or in said fastening-means, perforations in
said shell, detachable ends, a thin metal lining, and finer
perforations arranged more closely together in said lining,
substantially as set forth. (7.) In a mould for the manufac-
ture of blocks of artificial stone, where use is made of the
expanding property of lime or cement to obtain compression
to solidify the blocks, the combination of a cylindrical shell,
a butt-joint in said shell, fastening-means attached to the
meeting edges of the shell, bolt-holes in the fastening-means
in close proximity to the shell, bolts and nuts by which such
fastening-means are secured together, means for opening
said shell, a recess in said fastening-means adjacent to the
said butt-joint, projections and recesses formed on or in said
fastening-means, screwed studs fixed in the ends of said
fastening-means, perforated portions attached to each end of
the cylindrical shell, perforations in said shell, detachable
ends, perforations in said ends, holes in the edges of said
ends, nuts and bolts for securing the ends to the cylindrical
shell, a thin metal lining, and finer perforations in said
lining, substantially as set forth. (8.) The improved mould
for the manufacture of blocks of artificial stone, substantially
as set forth.
(Specification, 6s. 6d.; drawings, 2s.)

No. 16132.—25th March, 1903.—ROBERT HARVEY, of 17,
London Street, Newtown, near Sydney, New South Wales,
Master Plumber, and CHARLES JOHN BRUCE, of “Blink
Bonnie,” Torrens Street, Blakehurst, New South Wales,
Plumber. A self-tilting table adapted to receive moving
liquid or matter so as to automatically direct the flow,
divert and discharge the same.

Claims.—(1.) A tilting tray or table consisting of a receiver
having tubular parts for enclosing fluid metal or the like,
arranged to pass from corner to corner to serve as a counter-
poise during the tilting operations of said tray, substantially
as set forth. (2.) In a tilting tray or table adapted to dis-
charge in two or more directions, the openings formed at the
discharging-points adjacent to the resting-places for holding
the liquid metal or the like, as and for the purposes set forth.
(3.) In a tilting-tray poised upon a central pivot, tubular
parts attached to said tray arranged for the intermittent
flow of liquid metal or the like, the combination therewith
of floats, as and for the purposes set forth. (4.) In a poised
tilting tray operated by rising and falling floats, and counter-
poised in the manner set forth, the combination therewith of
outlet-valves, as and for the purposes set forth. (5.) The
general combination and arrangement of the parts, consist-
ing of a tilting tray or table, a pivot supporting same, tubular
parts enclosing liquid metal or the like attached to said tray,
the floats suspended therefrom, the valves and attachments
therefor operated by the said table, as described and shown,
and for the purposes set forth.
(Specification, 5s.; drawings, 2s.)

No. 16133.—25th March, 1903.—Sir W. G. ARMSTRONG,
WHITWORTH AND COMPANY, LIMITED, of Elswick Works,
Newcastle-on-Tyne, England, Manufacturing Engineers
(assignee of Robert Wright, of Elswick Works aforesaid,
Engineer). Improvements in stops or buffers for holding
wagons while being tipped for discharging their contents.

Claims.—(1.) The combination with a tipping-platform of
stops or buffers carried by curved brackets supported from
the sides of the platform, substantially as described. (2.) The
arrangement of stops or buffers, substantially as described,
and illustrated in the drawings.
(Specification, 1s. 9d.; drawings, 1s.)

No. 16138.—26th March, 1903.—LEVI ZEIGLER LEITER,
of Dupont Circle, Washington, United States of America,
Capitalist (assignee of Robert Moss, of Chicago, Illinois,
United States of America, Chemist). Improvement in
coking-ovens.

Claims.—(1.) In a coking-oven, the combination with the
coking-chamber of a series of air-discharging apertures or
openings in the wall of the oven, each aperture or opening
having a lateral inclination tangential to the horizontal plane
of the side wall of the oven for projecting air into the coking-
chamber at a lateral angle, and giving a circulation thereto
circumferentially around and within the coking-chamber,
substantially as described. (2.) In a coking-oven, the com-
bination with a coking-chamber of a series of air-discharging
apertures or openings located in the wall of the oven in the
same horizontal plane in relation one to the other, a dis-
charge pipe or nozzle entered into each aperture or opening,
and having a lateral inclination tangential to the horizontal
plane of the side wall of the oven, for projecting air into the
coking-chamber at a lateral angle and giving a circulation
thereto circumferentially around within the coking-chamber,
and an air-supply pipe common to all the discharge pipes or
nozzles for supplying air under pressure to the discharge
pipes or nozzles, substantially as described. (3.) In a coking-
oven, the combination with the coking-chamber of a bottom
therefor, an air-supply chamber throughout the bottom, a
flooring or covering for the air-supply chamber having per-
forations or slits therein gradually increasing in width from
the point of admission to the side farthest removed from the
admission of the air, for discharging air throughout the
surface of the bottom of the oven in proportionate ratio of
quantity and supply into the coking-chamber, substantially
as described. (4.) In a coking-oven, the combination with
the coking-chamber of a series of air-discharging apertures or
openings in the wall of the oven, each aperture or opening
having a lateral inclination for projecting air into the
coking-chamber at an angle and giving a circulation
thereto around and within the coking-chamber, a bottom
for the coking-chamber, an air-supply chamber in the bot-
tom, and a flooring or covering for the air-supply chamber
having perforations or slits therein gradually increasing in
width from the point of admission to the side farthest re-
moved from the admission of the air, substantially as de-
scribed. (5.) In a coking-oven, the combination with the
coking-chamber of a bottom therefor having heat imparted
thereto from highly heated gases drawn from the upper por-
tion of the chamber and conducted through and in direct
contact with the surface of the bottom, an air-supply cham-
ber in the bottom, and a flooring or covering for the air-
supply chamber extending throughout the bottom and
having perforations or slits therein for projecting air into the
lower portion of the coking-chamber, substantially as de-
scribed. (6.) In a coking-oven, the combination with the
coking-chamber of an eduction-flue opening into the coking-
chamber at the upper portion thereof, a bottom for the coking-
chamber, a passage or channel extending throughout the
bottom and having communication with the eduction-flue,
an air-supply chamber throughout the bottom above the
heat-conducting passage or channel, and a covering or flooring
for the air-supply chamber extending throughout the surface