1892
THE NEW ZEALAND GAZETTE.
No. 71

giving to the mixture of air and gas a lengthened free flow in
a continuous but gradually enlarging confined space, in order
to maintain a constant velocity of the mixture to the point
of ignition, as shown and described. (2.) The method of
producing the incandescence of a mantle or other suitable
surface or body from gases having a calorific value of from
135 to 150 heat units or thereabouts which consists in the
employment of the low-grade gas at the rate of 30 cubic feet
per hour, in combination with a supply of air equal to 1⅓
the volume of the gas, or thereabout, the mixture being
given a free flow for a distance of 6 in. in a continuous but
gradually enlarging confined space to the point of ignition,
where it is burned without the intervention of any obstruc-
tion other than a piece of wire gauze to prevent lighting
back, as set forth. (3.) The means of obtaining a hot flame
of small volume, suitable for incandescent gas-lighting, from
gases having a low calorific value of from 135 to 150 heat units
or thereabout, as shown and described, and consisting in
the combination of a gas-nozzle having an opening outlet of
about ⅛ in., and capable of passing 30 cubic feet of gas per hour
at a pressure of 2 in. of water, in combination with a mixing-
chamber having regulatable ports in its lower part of an
area capable of passing in a supply of air equal to about 1⅓
the volume of gas, a burner-tube extending from the top of
the chamber, having an inlet-opening of ⅝ in. diameter, and
tapering slightly for a portion of its length, with a rapidly
increasing taper to 1 in. diameter for the remainder of its
length, such length being about 6 in., and a piece of wire
gauze covering the outlet to prevent lighting back, all as set
forth. (4.) A gas-burner for burning gas of low calorific
value, constructed, arranged, and operating as shown and
described.
(Specification, 3s. 3d.; drawings, 1s.)

No. 15246.—14th August, 1902.—THE AMERICAN TOBACCO
COMPANY, a corporation organized and existing under the laws
of the State of New Jersey, having a place of business at
No. 111, Fifth Avenue, in the City, County, and State of
New York, United States of America (assignees of Washing-
ton Irving Tuttle, of Baltimore City, State of Maryland,
United States of America, Superintendent). Improvements
in sealed cans, and means for opening same.

Claims.—(1.) A loose rotatable cover for cans or boxes,
bearing a pivotally mounted cutter adapted to be swung from
inoperative to operative position, said cover being provided
with means adapted to engage the cutter in one of these
positions and positively lock it against swinging movement
in either direction, substantially as described. (2.) A loose
rotatable cover for cans or boxes, bearing a pivotally mounted
cutter adapted to be swung from inoperative to operative posi-
tion, said cover being provided with means adapted to engage
the cutter in each of these positions and positively lock it
against swinging movement in either direction, substantially
as described. (3.) A loose rotatable cover for cans or boxes,
bearing a pivotally mounted cutter adapted to be swung from
inoperative to operative position, said cover and cutter being
provided with locking-means coacting in one of these posi-
tions of the cutter to positively lock the latter against swing-
ing movement, said locking-means comprising an opening or
slit in the cover and a stop on the cutter adapted to spring
into said opening or slit, substantially as described. (4.) A
loose rotatable cover for cans or boxes, bearing a pivotally
mounted cutter adapted to be swung from inoperative to
operative position, said cover and cutter being pro-
vided with locking-means coacting in both positions
of the cutter to positively lock the cutter against
swinging movement, said locking-means comprising open-
ings or slits in the cover and a stop on the cutter adapted
to spring into said openings or slits, substantially as de-
scribed. (5.) A loose rotatable cover for cans or boxes, bearing
a pivotally mounted cutter adapted to be swung from in-
operative to operative position, said cover and cutter being
provided with locking-means coacting in one of these posi-
tions of the cutter to positively lock the latter against
swinging movement, said locking-means comprising an open-
ing or slit in the cover and a stop on the cutter adapted to
spring into said opening and to hook over the edge thereof,
substantially as described. (6.) A loose rotatable cover for
cans or boxes, bearing a pivotally mounted cutter adapted to
be swung from inoperative to operative position, said cover
and cutter being provided with locking-means coacting in
both positions of the cutter to positively lock the cutter
against swinging movement, said locking-means comprising
openings or slits in the cover and a stop on the cutter adapted
to spring into said openings or slits and to hook over the
edges thereof, substantially as described. (7.) A loose rotat-
able cover for cans or boxes, bearing a pivotally mounted cutter-
arm having on one side of its pivot a downwardly projecting
knife and an upwardly projecting stop, the cover being pro-
vided with an opening or slit for engaging the stop, substantially
as described. (8.) A loose rotatable cover for cans or boxes,
bearing a pivotally mounted cutter-arm having on one side
of its pivot a downwardly projecting knife and an upwardly
projecting stop, the cover being provided with a pair of open-
ings or slits for engaging the stop in the operative and
inoperative positions of the cutter, substantially as described.
(9.) A can or box provided with a top or end having
a substantially central depression, and with a loose cover
bearing a pivotally mounted cutter-arm adapted to be swung
from inoperative to operative position, said cutter-arm having
a downwardly projecting knife which in the inoperative
position of the cutter-arm is in line with said depression,
substantially as described. (10.) A can or box provided with
a top or end having a depression, and with a loose cover
bearing a pivotally mounted cutter-arm adapted to be swung
from inoperative to operative position, said cutter-arm having
a downwardly projecting knife which in the inoperative posi-
tion of the cutter is in line with said depression, and said
cover being provided with means for locking said cutter
in inoperative position, substantially as described. (11.) A
loose rotatable cover for cans or boxes, provided with a
depression on its under side and bearing a pivotally mounted
cutter located in said depression, substantially as described.
(Specification, 6s.; drawings, 1s.)

No. 15251.—12th August, 1902.—EDWARD THOMAS
RODNEY COATES, of Matakohc, Auckland, New Zealand,
Farmer; JOSEPH GORDON COATES, of Matakohc aforesaid,
Farmer; and WILLIAM KIDD ELDER, of Penrose, Auckland
aforesaid, Engineer. An improved trenching and ditching
plough.

Claim.—In a trenching and ditching plough as specified,
the enlarged mouldboard having its front part curved in-
wardly at an angle where it commences to curve of about 15°,
and its upper end curved inwardly at an angle of from
20° to 25°, with a corresponding curve between the parts
named; the double horse-shoe clasp, the front bevelled wheel
with curved spindle adjusted to beam of plough, and the muzzle
or clevis made longer with an increased number of holes,
for the purpose set forth, substantially as described and
illustrated.
(Specification, 3s.; drawings, 1s.)

No. 15268.—15th August, 1902.—AXEL GRÖNBERG, of Wasa,
Finland, Proprietor. Improvements in or relating to fur-
naces.

Claims.—(1.) A smoke-consuming furnace in which two
currents of heated air meet at the back of the furnace and
assist the combustion of the smoke as it leaves the grate,
substantially as described. (2.) A smoke-consuming furnace
comprising a series of longitudinally arranged hollow grate-
bars with upwardly directed ends at the rear of the grate,
and a series of longitudinally arranged air-supply tubes
passing upwards through the combustion-chambers and then
downwards towards the open ends of the hollow grate-bars,
substantially as described. (3.) The complete construction
of furnace substantially as described, or illustrated in Figs. 1,
2, and 3, or in Figs. 5 and 6, of the drawings.
(Specification, 3s. 6d.; drawings, 2s.)

No. 15277.—21st August, 1902.—MICHAEL JAMES ROBERT-
SON, of 200, Moorabool Street, Geelong, Victoria, Inventor.
Improvements in cash-carriers and apparatus therefor.

Claims.—(1.) In cash-carriers, and apparatus therefor, the
combination of a post, an arm one end of which is secured
to the post and the other end has a step thereon, an
elongated hole in said arm, a pivot pin, a pivoting-piece
pivoted to said pivot pin, a lever secured to the upper mem-
ber of said bracket, having at one end an adjustable balance-
weight and at the other a drop, a pull handle, a flat spring
the upper end of which is attached to the lower member and
has a neck in its middle, and a fork at its lower end, all as
and for the purposes described, and as illustrated in the
drawings. (2.) In cash-carriers, and apparatus therefor, the
combination of a post, a flat retaining-spring one end of
which is secured to the said post and the other has an
inclined step thereon, ears depending beneath said spring, a
releasing-rod the bottom end of which is pivoted to said
ears and the upper end of which has adjustable cross-arms
thereon, said upper end passing through an elongated hole
in an arm attached to the post, all as and for the purposes
described, and as illustrated in the drawings. (3.) In cash-
carriers, and apparatus therefor, the combination of a
metallic carrier the upper end of which is supported by
pockets therein hanging to studs protruding from a cover,
said cover being attached to or integral with a framework,
said framework being supported by two carrier wheels rotat-
ing on axles secured to standards above said framework,
rollers beneath said framework rotating on axles secured
to ears, buffers at each end of the said framework, all