1372
THE NEW ZEALAND GAZETTE.
[No. 50

with the teeth of the escapement-wheel as the same is
rotated, as specified. (4.) The general arrangement, con-
struction, and combination of parts in my improved fire-
escape as described and explained, as illustrated in the
sheet of drawings, and for the several purposes set forth.
(Specification, 5s.; drawings, 1s.)

No. 14082.—3rd October, 1901.—MANUEL ANTONIO GOMES
HIMALAYA, of 13, Rue de Buzenval, Boulogne-sur-Seine,
Department of Seine, France, Engineer. Improved appa-
ratus for making industrial use of the heat of the sun and
obtaining high temperatures.*

Claims.—(1.) An apparatus for obtaining high tempera-
tures by means of the convergence of the solar rays upon a
restricted focus, which may be formed in the centre of a
furnace, crucible, boiler, or the like by means of one or more
reflecting surfaces having the general shape of sectors (pre-
ferably truncated) of a paraboloid of revolution or of a
similar geometrical figure, these reflecting surfaces being
formed of a variable number of small reflectors or elementary
reflecting surfaces, substantially as above described. (2.) The
various forms and constructional arrangements of the appa-
ratus for obtaining high temperatures by means of the con-
vergence of solar rays upon a restricted focus, all sub-
stantially as described and set forth with regard to the
drawings accompanying my provisional specification and
the complete specification, namely: (a.) The forms of
carrying out the invention shown in Figs. 3, 4, 5, 6, 16, and
17, fitted with a single reflector having two adjustments.
(b.) The form (Figs. 14 and 15) fitted with two oppositely
arranged single reflectors symmetrically movable about the
central furnace. (c.) The form (Figs. 7 and 8) fitted with
two reflectors mounted symmetrically upon the same axes.
(d.) The form (Figs. 9 and 10) specially applicable to the
heating of a steam-boiler. (e.) The form (Fig. 11) applicable
to the production of nitrous acid by the combustion of the
nitrogen in the air. (f.) The form of the invention shown
in Figs. 12 and 13, fitted with three adjustments. (g.) The
form of the invention shown in Figs. 18 and 19, the furnace
being movable, upon the truck radially to or from the
reflector.
(Specification, 16s.; drawings, 15s.)

No. 14291.—27th November, 1901.—JOHN JOSEPH DAILY,
of 8, Armagh Street East, Christchurch, New Zealand,
Chemist. An improved non-puncturable lining for pneumatic
rubber tires and covering for air-tubes for cycles, motor-cars,
war carriages, and other wheel conveyances.*

Claim.—An improved non-puncturable lining for pneumatic
rubber tires and covering for air-tubes for cycles, motor-cars,
war carriages, and other wheel conveyances, from chemically
prepared animal hides in combination with shellac, varnish,
and vulcanised rubber, as described.
(Specification, 2s.)

No. 14425.—9th January, 1902.—ROBERT WHITSON, of
Auckland, New Zealand, Engineer. An improved exhaust-
condenser for explosive motors and engines, for condensing
and silencing the exhaust and discharge of the products of
combustion therefrom.*

[NOTE.—The title in this case has been altered. See List Pro-
visional Specifications, Gazette No. 6, of the 24th January, 1902.]

Claims.—(1.) In an improved exhaust-condenser as speci-
fied, the pipe leading from the exhaust-piece into a water-
jacketed receptacle, for the purpose set forth, substantially
as described. (2.) In an improved exhaust-condenser as
specified, the water-jacketed receptacle having within it one
or more baffle-plates, with the exhaust-piece leading into one
part thereof and an exhaust-pipe leading from another part
thereof, and with a vent-tap in bottom or side thereof, for
the purpose set forth, substantially as described. (3.) In an
improved exhaust-condenser as specified, the exhaust-pipe
leading from the water-jacketed receptacle to and entering
a discharge-box, with a water-pipe connected to said exhaust-
pipe, for the purpose set forth, substantially as described.
(4.) In an improved exhaust-condenser as specified, the dis-
charge-box having the exhaust-pipe projected therein and an
exhaust-outlet in the side thereof, for the purpose set forth,
substantially as described. (5.) In an improved exhaust-
condenser as specified, in combination with an explosive
motor and engine, the pipe leading from the exhaust-piece
into the water-jacketed receptacle, said water-jacketed
receptacle having within it one or more baffle-plates, and a
vent-tap in bottom or side thereof, the exhaust-pipe leading
from said water-jacketed receptacle to and entering the dis-
charge-box, with water-pipe connected to said exhaust-pipe,
said discharge-box having said exhaust-pipe projected therein,
and the exhaust-outlet in side of said discharge-box, all for
the purpose set forth, substantially as described.
(Specification, 3s. 9d.; drawings, 1s.)

No. 14514.—11th February, 1902.—JOHN GREENACRE, of
Huntly, Auckland, New Zealand, Settler. An improved
machine for sawing logs.*

Claims.—(1.) An improved machine for sawing logs, con-
sisting of the parts arranged, combined, and operating sub-
stantially as and for the purposes described and illustrated.
(2.) In apparatus for the purpose indicated, a hand-wheel
fixed upon a shaft journaled in a bracket mounted in a sup-
port, a saw having a pitman rod pivoted upon it, the other
end of which is pivoted upon the hand-wheel, and a rod fixed
to the saw and working in a guide upon the bracket, sub-
stantially as and for the purposes described and illus-
trated. (3.) The combination in apparatus for the purpose
indicated of a saw driven by a pitman rod from a wheel fixed
upon a spindle, and spur-gearing driven by a handle for giving
motion to said wheel, substantially as specified and illus-
trated. (4.) The combination in a machine for the purpose
described of a bracket working upon vertical guides and
carrying a wheel and parts by which a saw is operated, and a
screw by which said bracket may be adjusted vertically, sub-
stantially as specified and illustrated.
(Specification, 2s. 6d.; drawings, 1s.)

No. 14671.—25th March, 1902.—JOHN CHAMBERS AND SON,
LIMITED, of Auckland, New Zealand, Engineers (nominees
of Babcock and Wilcox, of 147, Queen Victoria Street, Lon-
don, England, Steam-boiler Manufacturers—the assignees
of George William Thode, Engineer with said Company).
Improvements in mechanical chain grate stokers for steam-
boiler or other furnaces.

Claims.—(1.) A chain grate stoker constructed and arranged
to operate substantially as described. (2.) The combination
with a chain grate stoker of a boiler or other furnace fur-
nished with a fuel-hopper and otherwise fitted as described
to accommodate the stoker and to exclude admission of air
except through the fire-grate. (3.) In combination with a
chain grate stoker, a feed-regulating device constructed and
arranged to operate substantially as described. (4.) In com-
bination with a chain grate stoker and its furnace, a lifting
door fitted and operated as described to adjust the depth of
fuel on the grate. (5.) In combination with a chain grate
stoker and its furnace, a dumping plate or plates fitted at
rear of the grate to prevent air-leak, and arranged to direct
the ash and clinker into the ash-pit as described.
(Specification, 3s. 6d.; drawings, 1s.)

No. 14672.—25th March, 1902.—JOHN CHAMBERS AND SON,
LIMITED, of Auckland, New Zealand, Engineers (nominees of
Babcock and Wilcox, of 147, Queen Victoria Street, London,
England; Steam-boiler Manufacturers—the assignees of
George William Thode, Engineer with said Company). Im-
provements in mechanical chain grate stokers, for steam-
boiler or other furnaces.

Claims.—(1.) The combination of parts constituting the
improved chain grate stoker substantially as described with
reference to the drawing. (2.) The combination with a
chain grate stoker of a lifting door operated by a screwed
spindle and hand-wheel to adjust the depth of fuel on the
grate, said lifting door being capable of being turned out-
wards like an ordinary fire-door, substantially as de-
scribed. (3.) The combination with a chain grate
stoker of feed-regulating device consisting of a worm h
gearing with a worm-wheel g on a sprocket-wheel shaft d,
a ratchet wheel k keyed on the worm-spindle i and
actuated by a pawl e carried on a bell-crank lever f,
a link l connected to said bell-crank lever f and a pivoted
arm m, to a slot in which the other end of the link l
is adjustably connected to regulate the extent of travel of
the pawl e, substantially as described. (4.) The combina-
tion with a chain grate stoker of a feed regulating device
consisting of a worm h gearing with a worm-wheel g on the
sprocket-wheel shaft d, a ratchet wheel k keyed on the
worm-spindle i and actuated by a pawl e carried on a bell-
crank lever f, a slotted segment n¹ centred loosely on the
worm-spindle i and carrying a shield m¹ adapted to cover
a greater or less number of teeth in the path of travel of the
pawl e, substantially as described. (5.) The combination
with a chain grate stoker of a pivoted door situated over the
ash-pit and adapted to normally prevent ingress of air
behind the stoker, and to be periodically opened to dis-
charge clinker and ash into the pit below, substantially as
described.
(Specification, 5s.; drawings, 6s.)

No. 14935.—29th May, 1902.—JOHN L. MCMILLAN, of
Ilion, Herkimer, New York, United States of America,
Designing Engineer. Rotary engines.