1770

THE NEW ZEALAND GAZETTE.

No. 55

plunger, and also certain parts associated with the former
class of lamp to facilitate use of same on the bridge of a vessel.
The signal-lamp consists of a cylindrical or rectangular
metal case with necessary ventilation-apertures. It contains a
reflector in the rear side, a converging lens in the face, and
behind the lens a shutter the two leaves of which swing to
meet and overlap at the centre to close, and swing apart to
open. The shutter is normally held closed by gravity and by
a spring; in the fixed lamp it is moved to open and display
the light by pulling a lanyard, in the portable lamp by pressing
a finger-button.

[NOTE.-The above extract from the specification is inserted in place
of the claims.]

(Specification, 9s.; drawing, 4s.)

No. 24747.-28th July, 1908.-CHARLES UDDSTROM, of
Greymouth, in the Dominion of New Zealand, Cabinetmaker.
Improvements in means for mounting circular saws on their
spindles.*

Claims.-(1.) Means for mounting a circular saw on its
spindle, characterized by a cone adapted to be forced into
the central opening of the saw so as to centre it with respect
to and secure it upon the spindle, substantially as described.
(2.) Means for mounting a circular saw on its spindle, con-
sisting of the parts combined, arranged, and operating sub-
stantially as described.

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

No. 24753.-30th July, 1908.-NORMANBY CONSTANTINE
CHRISTIE, Doon Street, Invercargill, New Zealand, Fitter, and
WALTER HENDERSON, of Dee Street, Invercargill aforesaid,
Merchant. Improvements in or relating to railway air-
brake systems.*

Claims.-(1.) A railway-train air-brake apparatus of the
class described, characterized by its being provided with
means for automatically sounding an alarm on any angle-
cock of such apparatus being shut so as to render it wholly
or partly inoperable, substantially as described. (2.) A rail-
way-train air-brake apparatus characterized according to
claim 1, in which the alarm-sounding means consists of
an electrical signalling-apparatus which is automatically
operated to sound the alarm by the shutting of any angle-
cock of such apparatus so as to render it wholly or partly
inoperable completing or breaking an electric circuit, sub-
stantially as described. (3.) In a railway-train air-brake
apparatus of the class described, provided with means for
automatically sounding an alarm on any angle-cock of such
apparatus being shut, means for preventing the operation
of the alarm on the necessary shutting of the rear and front
angle-cocks of the train, substantially as described. (4.) In
a railway-train air-brake apparatus according to claims 1,
2, or 3, means whereby the engine-driver can make the alarm-
sounding means temporarily inoperative during shunting and
like operations, substantially as described. (5.) In a rail-
way-train air-brake apparatus according to claim 4, means,
actuated by the pulling of the locomotive-whistle lever, for
automatically making the alarm-sounding means again opera-
tive in the event of the engine-driver neglecting to do so,
substantially as described. (6.) In a railway-train air-brake
apparatus according to claim 2, forming the rubber coupling-
hoses with an electrical conductor formed in and through
the substance thereof, substantially as and for the purpose
set forth. (7.) The combination with a railway-train air-
brake apparatus of the class described, of an electrical signal-
ing-apparatus constructed, arranged, and operating sub-
stantially as and for the purposes set forth.

(Specification, 17s. ; drawing, 3s.)

No. 25215.-12th November, 1908.-WILLIAM HENRY
TRENGROVE, of Trengrove and Petherick, Wellington, New
Zealand, Engineer. Improvements in internal-combustion
engines.*

Extract from Specification.-According hereto, a main
cylinder having a reciprocating piston is caused to rotate
within a fixed casing, whereby a hole in the end of the
cylinder is brought alternately into correspondence with holes
in the casing, thereby forming portways for the admission
and exhaust of the motive fluid.

[NOTE.-The above extract from the specification is inserted in place
of the claims.]

(Specification, 14s.; drawing, 6s.)

No. 25452.-16th January, 1909.-GEORGE TIFFIN
STEWART, Civil and Mechanical Engineer, and HECTOR
HALHEAD STEWART, Mechanical Engineer, both of Feathers-
ton, New Zealand. A searing and docking knife.

Extract from Specification.-It consists of a hollow metal
blade through which a gas-flame circulates to heat it, the
gas being supplied to the blade through a flexible tube from
an acetylene or other gas generator, which may be portable
or otherwise.

[NOTE.-The above extract from the specification is inserted in place
of the claims.]

(Specification, ls. 9d.; drawing, ls.)

No. 25526.--8th June, 1908.-WILLIAM WHITE, of Railway
Exchange Building, Chicago, Illinois, United States of America,
Engineer. Improvements in systems of washing and filling
locomotive and other boilers.

[NOWE.-This is an application under the International and Inter-
colonial Arrangements, the date given being the official date of the
application in the United States of America.]

Claims.-(1.) A boiler washing and filling system, com-
prising means for receiving and conveying the blown-off
steam and water from the boiler, a water-supply and me-
chanism located in the path of and adapted to be operated
by the blown-off steam and water, whereby the fresh cold-
water supply is automatically controlled. (2.) A boiler
washing and filling system, comprising a washout-water
supply and a filling-water supply, means for receiving and
conveying the blown-out products from the boiler, and me-
chanism located in the path of and adapted to be operated
by the blown-out products from the boiler, whereby the
filling-water supply is regulated, substantially as described.
(3.) A boiler washing and filling system, comprising tanks,
means for conveying the blown-out products from the boiler
to the tanks, a heater, means whereby the products are
separated and the heat-units of the steam conveyed to the
heater, and mechanism intermediate of the heater and initial
point of the system and adapted to be operated by the
blown-out products so as to open and control a water-supply
for the heater, substantially as described. (4.) A boiler
washing and filling system, comprising a washout-water
supply and a filling-water supply, means for receiving and
conveying the blown-out products from the boiler, and
mechanism located in the path of the blown-out products,
whereby they are diverted into a film or spray, substantially
as described. (5.) The system and apparatus for washing
and filling boilers, substantially as described, and illustrated
in the drawings.

(Specification, 7s. 6d. ; drawing, 3s.)

No. 25712.-19th March, 1909.-WILLIAM DALZIEL, of Old
Renwick Road, Blenheim, New Zealand, Farmer. An im-
proved construction of hay-press.

Claims.-(1.) The improved hay-press, characterized by the
use of a pair of sides arranged vertically upon a platform,
and provided with means for staying them at the desired
distance apart, substantially as specified. (2.) An improved
hay-press, comprised by a platform, a pair of sides arranged
vertically upon such platform, stay-bars extending between
such sides and provided with means for adjusting their length,
a top adapted to fit between the sides and provided with bars
projecting laterally from its side edges, vertical slides in the
press-sides into which such bars fit, and means whereby the
top may be drawn down between the sides, substantially as
and for the purposes specified. (3.) The improved hay-press
constructed, arranged, and operated substantially as de-
scribed and explained.

(Specification, 3s. 9d.; drawing, ls.)

No. 25765.-31st March, 1909.-GEORGE HENRY PEDLAR, of
Oshawa, Ontario, Canada, Manufacturer. Improvements in
corrugated culvert or pipe sections.

Claims.-(1.) A transversely bent and corrugated pipe or
culvert section, characterized by having the edges at the
side flattened, whereby the corresponding sections may be
readily attached together. (2.) A culvert or pipe section
according to claim 1, in which certain of the edges are shaped
to form a groove into which the edges on the opposite sections
may enter. (3.) A modification of the culvert according to
claim 2, in which the groove is formed by a flange twice