1940
THE NEW ZEALAND GAZETTE.
[No. 70

rolling tubes or hollow bodies having various operative parts,
disposed, arranged, and adapted to operate as set forth with
reference to and shown in the drawings.
(Specification, 11s.; drawings, 3s.)

No. 16783.—12th August, 1903.—JOHN VORBACH, of Ren-
wicktown, Marlborough, New Zealand, Blacksmith. Im-
provements in screw-cutting stocks and dies.

Claim.—In screw-cutting appliances having the dies or
cutters fitting in radial grooves in an annular ring and ad-
justed in position within such grooves by means of an annular
plate fitting above the ring with eccentric grooves on its
under-surface in which upwardly projecting pins on the dies
or cutters fit, a radial boss upon the periphery of the annular
plate, a crank-arm one end of which is articulated to one of
the radial faces of the boss, and a set-screw passing through
the free end of the crank-arm and adapted to bear against a
bearing-face projecting from the side of the annular ring,
substantially as specified.
(Specification, 4s.; drawing, 1s.)

No. 16784.—12th August, 1903.—EMIL MAXIMILIAN GOL-
TERMANN COLEMAN, of Cromwell Buildings, corner of Bourke
and Elizabeth Streets, Melbourne, Victoria, Watchmaker.
Improved mechanism for automatically igniting matches at
predetermined times.

Claims.—(1.) Improved mechanism for automatically ig-
iting matches at predetermined times, consisting in a
horizontal spring-operated bolt carrying a match at its
forward end, said bolt being mounted in a cylinder and
released by a tappet on the winding-handle of an alarm-
clock, so that the match is ignited upon a yielding striking-
surface and held in the desired position, substantially as set
forth and illustrated. (2.) In mechanism for automatically
igniting matches at predetermined times, a horizontal bolt
mounted in a slotted sleeve encircled by a spiral spring
arranged within a slotted cylinder having a spring buffer at
its forward end and a cocking-slit at one side to engage a
trigger secured to said horizontal bolt, substantially as set
forth and illustrated. (3.) In mechanism for automatically
igniting matches at predetermined times, a horizontal
cylinder containing a spring-operated partially rotatable
bolt having a hole near its forward end, beneath which is
a small trough on a bracket and in front of which is a
striking-surface, enclosed by a convenient cap open at its
forward end for the passage of said bolt, substantially as set
forth and illustrated. (4.) In mechanism for automatically
igniting matches at predetermined times, an inclined ad-
justable striking-surface carried in a shallow tray mounted
in a seating on a small bracket, the stem of said tray having
a coiled spring around it and the edges of said tray being cut
away forwardly and rearwardly and recessed on one side,
substantially as set forth and illustrated. (5.) In mechanism
for automatically igniting matches at predetermined times,
a gauge-rod fitting within a sleeve on a cap on the forward
end of a horizontal cylinder carrying a spring-operated bolt,
said gauge-rod having its forward end bent so as when turned
and locked to correctly indicate the corresponding position
of the match after ignition, substantially as set forth and
illustrated.
(Specification, 6s.; drawing, 1s.)

No. 16790.—7th August, 1903.—HEINRICH POETTER, of
Dortmund, Germany, Engineer. The manufacture of a
safety explosive or blasting substance.

Claims.—(1.) The manufacture of a safety explosive or
blasting substance by the intimate mixture of ammonium-
nitrate, dinitro-benzol, curcuma or turmeric, and organic
copper-salts as oxalate, tartrate, ferro-cyanate, benzoate,
tannate, gallate or pyrogallate of copper, substantially as
described. (2.) An explosive or blasting substance consist-
ing of the ingredients described and mixed substantially in
the proportions specified.
(Specification, 1s.)

No. 16794.—13th August, 1903.—WILLIAM MONTEATH,
a member of the firm of C. Monteath and Sons, of Market
and Cecil Streets, South Melbourne, Victoria, Ironfounder.
Improvements in and relating to flushing-cisterns.

Claims.—(1.) A flushing-cistern as A having the siphon
bend C seated in a depression or channel at its bottom and
lying at about right angles to back of cistern, in combination
with a movable bell as B, substantially as described and
shown. (2.) A flushing-cistern as A having a siphon bend as
C either fitted in or cast with the cistern and with the
siphon discharge-pipe next the back of cistern, substantially
as described and shown. (3.) In a flushing-cistern a pull-
cord lever as G carrying the bell B within the cistern, said
lever having a lug as G³ and a pin as G⁴ on it and fitting
within lugs as G¹ on edge of cistern, substantially as de-
scribed and shown. (4.) In a flushing-cistern a siphon bend
as C having a screwed nipple as C¹ cast in its outlet-end
to allow of its being secured in cistern by nut C² and to
downpipe D by coupling D¹, substantially as described and
shown. (5.) The flush-water cistern having siphon bend as
described, combined with the connections consisting of
pipe D, bend D² having lugs D³ projecting from its socket,
the divided clip E¹, the beaded branch E² of soil-pan, and
their appurtenant parts, substantially as described, explained,
and shown.
(Specification, 3s. 6d.; drawing, 2s.)

No. 16795.—13th August, 1903.—GEORGE WILLIAM BROWN,
of Preston Street, South Preston, Victoria, Engineer, and
GEORGE MICHAEL NORTON, of James Street, Coburg, Victoria,
Currier. Improvements connected with furnace fire-bridges
and adjoining parts of steam-generators.

Claims.—(1.) In devices of the class indicated, a fire-bridge
apertured at its left and right, in combination with short air-
inlet tubes located immediately beneath fire-bars, and outlet-
tubes which connect with said inlets, and incline upwardly
into the combustion-chamber, with their outlets at about the
bridge-level, as set forth. (2.) In devices of the class indicated,
the combination, with an apertured fire-bridge, of upwardly
inclined tubes extending into the combustion-chamber to
about the bridge-level, and groups of short inlet-tubes (having
a common trunk) extending to said apertures from immedi-
ately under the fire-bars, as set forth. (3.) In devices of the
class indicated, the combination, with the apertured fire-
bridge, of the tubes inclined upward into the combustion-
chamber having outlets at the end and under-side only, and
groups of short inlet-tubes having trunks communicating there-
with from immediately under fire-bars, as set forth. (4.) In
devices of the class indicated, the combination, with the
recessed and apertured fire-bridge, of groups of inlet-tubes,
and brackets 1 supported thereby with pivots m, damper-
actuating rod n, of damper-arms o, and a group of dampers p
to each damper-rod, as set forth. (5.) In devices of the class
indicated, the combination, with the apertured fire-bridge,
of the tubes inclined upward into the combustion-chamber
having outlets at the end and under-side only, and groups of
short inlet-tubes having trunks, communicating therewith
from immediately under fire-bars, brackets supported by
said inlet-tubes, a damper-actuating rod pivoted to each
said bracket, a group of damper-arms connected to each
damper-rod, and a damper to each arm, substantially as and
for the purposes set forth.
(Specification, 5s.; drawing, 1s.)

No. 16804.—12th August, 1903.—TURE GUSTAF RENNER-
FELT, of Broadway, 45, New York, United States of North
America, Engineer. Improvements in centrifugal liquid-
separators.

Claims.—(1.) A centrifugal separator provided with a
separating bowl or vessel wholly yielding, supported by
means rigidly attached to a rotatable shaft, substantially as
described. (2.) In a centrifugal separator, a bowl or vessel
operatively attached to a rotatable shaft by yielding means
adapted to yield both in vertical and lateral directions, sub-
stantially as described. (3.) In a centrifugal separator, a
bowl or vessel operatively attached to one end of a spiral
spring, the other end of which is directly attached to a
rotatable shaft, said spring constituting the entire means of
support for the bowl or vessel, substantially as described.
(4.) In a centrifugal separator, a bowl or vessel operatively
connected to a rotatable shaft by yielding means only, said
rotatable shaft being provided with end or thrust bearings, sub-
stantially as described. (5.) In a centrifugal separator, the
combination of a driving-shaft and a bowl with laterally
yielding means interposed between said shaft and the bowl,
the same constituting the sole means of support for the bowl,
substantially as described. (6.) In a centrifugal separator,
the combination of a bowl with yielding supporting-means
adapted to yield vertically and to permit the bowl or vessel
when rapidly rotated to lessen the strain upon the bearings,
substantially as described. (7.) In a centrifugal separator
the combination of a bowl detachably connected to a
support, which support is in turn yieldingly connected
to a rotatable shaft, substantially as described. (8.) In
a centrifugal separator, a spring, a bowl or vessel rigidly
attached to one end of said spring, the other end of
which is rigidly secured to a rotatable shaft, substantially as
described. (9.) In a centrifugal separator, a bowl or vessel, a
spiral spring rigidly secured at one end to said bowl or vessel