3088
THE NEW ZEALAND GAZETTE.
[No. 99

disc, and at night the exhibition of a light. According hereto
a rocking shaft mounted horizontally in bearings has upon
one end a crank upon which is revolvably mounted a wheel-
cam, the shaft being so placed that the wheel-cam is depressed
and the shaft rocked by a train approaching the crossing. A
rope sheave, loosely mounted upon the shaft, has a project-
ing lug which is engaged by a tappet fixed upon the rocking
shaft whereby said rope sheave is partially revolved and a
cord is wound upon its circumference which is grooved for
its reception. The cord is attached to one end of a sliding
rod which carries a bracket loosely threaded upon a second
sliding rod and bearing against a spring thereon, the second
rod being operated as soon as the spring has been compressed
beyond a predetermined limit. A rope attached to this
second sliding rod leads to the signalling-apparatus herein-
after described. To return the rocking shaft so that its cam
will be in operative position, a second sheave revolvably
mounted upon it is connected by a rope to a spring-returned
slide-rod which, when the rope first referred to is released as
hereinafter explained, returns the rocking shaft with its cam
to its normal position. Near the railway crossings is fixed
a vertical standard at the upper end of which is a counter-
balance semaphore arm, an electric lamp, and pivoted arms,
the ends of which carry coloured transparent discs which,
when said arms are operated, fall upon each side of the lamp
referred to. The rocking spindle upon which the semaphore
arm is fixed has a cam upon one end which engages with a
corresponding cam projecting from one of the arms carrying
the coloured discs whereby the spindle upon which it is fixed
is rocked and the other corresponding arm moved with it in
front of the electric lamp. When it is desired to prevent the
disc arms from coming into operation simultaneously with
the semaphore arm, a cam, revolvably mounted upon the
rocking shaft of the semaphore arm, can be turned over to
engage with a cam upon the end of one of the disc arms and
prevent it from turning with the semaphore arm. This cam
is operated by a vertical rod having a handle which can be
raised into a catch to hold the cam in position. The rope
referred to before as being secured to the end of the second
sliding rod is carried along the side of the railway and con-
nected to one end of a spring-returned bell-crank lever one
end of which, when the bell-crank lever is operated, engages
with a spring projecting laterally from a rope sheave. This
spring is normally retained by a sliding catch, but when moved
laterally by the bell-crank referred to the sheave is free to
partially revolve under the influence of a balance-weight upon
the semaphore arm, whereby said arm is caused to assume its
horizontal or danger position. Simultaneously with this ope-
ration tappet pins, projecting from the side of the sheave, close
electrical circuits between an electrically driven alarm-gong and
the electric lamp referred to, the electro-motive power being
supplied from ordinary batteries or otherwise. To return the
disc to its normal position after the train has passed the
crossing, the sliding catch referred to is fixed upon the hori-
zontal spring-return slide-rods. These slide-rods are moved
by the pull of a rope wound round a sheave upon a rocking
shaft having a crank upon which is a roller cam operated by
the departing train in the manner hereinbefore referred to.
The rope is wound upon this sheave, whereby the rod slides,
and causes the sliding catch to pass over and beyond the
spring upon the rope sheave. When the train has passed, the
rod is returned by its spring taking with it the sliding catch,
which thereby revolves the rope sheave and draws the sema-
phore arm down to its vertical or safety position.
[NOTE.—The above extract from the specification is inserted in place
of the claims.]
(Specification, 11s. ; drawing, 1s.)

No. 20333.—18th November, 1905.—WALTER McINTYRE,
of Westport, New Zealand, Wheelwright (assignee of James
Smith, of Westport, New Zealand, Blacksmith). Improved
drill for boring coal and the like.*

Claim.—The improved drill for boring coal and the like,
the same being formed of a length of metal of three-cornered
cross-section twisted longitudinally, and with three cutting
points formed by splitting up the centre and bending up and
sharpening the three corners of the metal, substantially as
specified.
(Specification, 2s. 3d. ; drawing, 1s.)

No. 20358.—23rd November, 1904.—GEORGE WILLIAM
MELLOR, of 12 Coleman Street, London, England, Solicitor,
(acting as sole executor of George Skaats Mayhew, deceased,
of 2 Basinghall Avenue, London, England, Engineer). Im-
proved machine for forming compound deals.
[NOTE.—This is an application under section 106 of the Act, the date
given being the official date of the application in United States of
America.]

Extract from Specification.—My invention comprises a
bottom clamp extending throughout the length of the machine,
and adapted to slide on the table of the machine, operating in
conjunction with a series of top clamps, all said clamps being
driven by suitable mechanism so as to press the pieces of
wood together and to form the deal as above described.
[NOTE.—The above extract from the specification is inserted in place
of the claims.]
(Specification, 15s. ; drawing, 4s.)

No. 20427.—5th December, 1905.—JOHN STRATHERN, of
Kingsland, Auckland, New Zealand, Agent. A mixture for
making potatoes, bulbs, roots, and seed when planted or sown
proof against blight and other parasite.*

Claims.—(1.) The mixture specified consisting of the in-
gredients named in the proportions of shell lime half a hun-
dred avoirdupois weight, sulphide of copper one hundred
avoirdupois weight, permanganate of potash two and a half
pounds avoirdupois weight, common soap one pound avoir-
dupois weight, and water twenty-five gallons mixed for the
purpose set forth as described. (2.) Applying the solution
made by the mixture specified and covered by claim 1 to
the article treated for a period of twelve hours or more accord-
ing to the health of the article, for the purpose set forth, as
described.
(Specification, 2s. 3d.)

No. 20428.—8th December, 1905.—PHILIP JOHN COCKS, of
Opawa, Christchurch, New Zealand, Clerk in Holy Orders,
and FRANK OSMUND ANDREWS, of Salisbury Street, Christ-
church, New Zealand, Engineer. An improved poultry-
feeder.*

Extract from Specification.—The invention comprises a
feeding-trough having a hinged lid protected by a cover. A
platform pivoted at the back of the apparatus is connected
to the hinged lid so that the platform is depressed by the
birds walking thereon, which action raises the hinged lid and
gives access to the food contained in the trough. When the
birds leave the platform the lid closes automatically. An
adjustable balance weight is provided whereby the lid is
made to operate with any desired weight upon the platform.
[NOTE.—The above extract from the specification is inserted in place
of the claims.]
(Specification, 2s. 6d. ; drawing, 1s.)

No. 20530.—5th January, 1906.—HUBERT PATRICK KEOGH,
of No. 31 Queen Street, Melbourne, Victoria, Australia,
M.L.A. of the State of Victoria. Improvements in the treat-
ment of sulphide ores containing zinc.*

Claims.—(1.) The process of extracting zinc from sulphide
ores or ore products containing the same, which consists in
converting by heat the zinc contained in the ore into soluble
sulphate of zinc and oxide of zinc, washing out the soluble
sulphate with water, adding to the solution thus obtained
calcium-chloride, drawing off the solution of chloride of zinc
so formed, adding the latter to the treated ore, digesting the
whole to form an oxychloride of zinc, decomposing said
oxychloride by an alkaline hydrate, and removing the preci-
pitated zinc compound and washing the same, all substan-
tially as described. (2.) In the process for extracting zinc
from sulphide ores or ore product containing the same, the
steps of heating the ore to form zinc-oxide and dissolving out
said oxide by digesting the ore with chloride of zinc, all sub-
stantially as described.
(Specification, 3s. 6d.)

No. 20582.—17th January, 1906.—CHARLES HENRY
FABIAN, of Wellington, New Zealand, Sheet-metal Worker.
Improved adjustable plant-support.*

Claims.—(1.) A plant-support consisting of a spring band
and standard, the band secured around the plant or plants
by the insertion of said standard, substantially as set forth.
(2.) A plant-support comprising an open spring band having
two spring eyes for the purpose of joining. (3.) A plant-
support comprising an open spring band having, for the pur-
pose of joining, two spring eyes for use in combination with
a standard, substantially as set forth. (4.) The combination
and arrangement of parts comprising the improved plant-
support, substantially as and for the purposes set forth and
illustrated in the drawing.
(Specification, 2s. ; drawing, 1s.)