3018
THE NEW ZEALAND GAZETTE.
[No. 88

combination, a hollow drill through which air under pres-
sure passes to the hole being drilled, an air-box closing
around said drill and exterior of the hole being drilled,
means for keeping such air-box against the face of the rock,
and a leadaway pipe terminating in media in a receptacle,
substantially as and for the purposes set forth. (2.) In
apparatus for preventing the escapement of dust caused
by mining-drills of the pneumatic type, in combination, a
hollow drill through which air under pressure passes to the
hole being drilled, an air-box having packing between it and
the surface of the rock around the hole being drilled, and
between the box and the drill a spring to keep the air-box
against the face of the rock, and a tube leading from the
air-box into an air-purifier, substantially as and for the pur-
poses set forth. (3.) In apparatus for preventing the escape-
ment of dust caused by mining-drills of the pneumatic type,
in combination, a hollow drill 1 through which air under
pressure passes to the hole being drilled, an air-box 7
closing around said drill and exterior of the hole being
drilled, a tapered recess or seat 9 in said box, a plug
or pad 10 held in position by a spring 11, a ring of packing 8,
and a tube 15 leading from said air-box into an air puri-
fier 16, substantially as and for the purposes set forth. (4.) In
apparatus for preventing the escapement of dust caused by
mining-drills of the pneumatic type, in combination, a
hollow drill 1 through which air under pressure passes to the
hole being drilled, an air-box 7 closing around said drill and
exterior of the hole being drilled, a tapered recess or seat 9
in said box, a plug or pad 10 held in position by a spring 11,
a ring of packing 8, and a tube 15 leading from said air-box
into an air-purifier 16 containing liquid in which chemical
media is placed, substantially as and for the purposes set
forth.

(Specification, 4s. 9d.; drawing, 1s.)

No. 23351.—22nd August, 1907.—CHARLES HENRY THOMAS
ALSTON, of 34 Great St. Helen’s, London, England, Mecha-
nical Engineer. Improvements in or connected with in-
ternal-combustion engines.

Extract from Specification.—In connection with this en-
gine, when the piston reaches the end of its stroke and the
products of combustion have been exhausted, say, by the
piston passing exhaust-ports in the cylinder, a charge of
scavenging air is first forced into the cylinder by an air-
pump, which sweeps out in front of it the remaining pro-
ducts of combustion. Then, subsequently to this, air and
combustible fluid are forced into the cylinder—that is, into
the air already contained in it at the upper part of same,
which in turn presses forward the air already delivered to-
wards the piston, part of this air escaping through the then
open exhaust-port. The piston returns, closing the ports,
and compresses the contents of the cylinder to the required
degree, ignition takes place, and the piston is pressed out-
wards.

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

(Specification, 14s.; drawings, 2s.)

No. 23354.—23rd August, 1907.—ARTHUR LAWTON, of
Wright Street, Vogeltown, Wellington, New Zealand, Me-
chanic. A novel and improved reversible corrugated iron or
metal mat and frame.

Claims.—(1.) A corrugated mat and frame, having for the
purpose indicated a sheet of metal with small corrugations,
the two edges of which have in combination a bar of round
iron inserted, substantially as described and set forth.
(2.) For the purpose indicated, lengths of hoop iron crossways
of and bent around the edges of a sheet of corrugated metal,
the whole securely riveted together, substantially as described
and set forth. (3.) For the purpose indicated, a strip of
metal having a single corrugation, the method of securing
the corners by rivets, substantially as described and set forth.
(4.) The combination and arrangement of parts comprising
the improvements in mats, substantially as and for the pur-
poses described and set forth, and illustrated on the drawings.

(Specification, 1s. 6d.; drawing, 1s.)

No. 23388.—17th September, 1906.—FRANCIS WENTWORTH
BREWSTER, of the Golfer’s Club, Whitehall, London, Eng-
land, Gentleman. Improvements in golf clubs.

[NOTE.—This is an application under section 106 of the Act, the
date given being the official date of the application in Great
Britain.]

Claims.—(1.) A golf-club cross-head having its length in
its striking direction cast of aluminium alloy with a through
packing-hole extending from side to side transversely to its

striking direction, and with a through shaft-hole extending
from top to bottom at right angles to said direction and at
an inclination to the level of the club-head and intersecting
said transverse packing-hole, and having a packing of wood
shaped and fitted to said transverse packing-hole and formed
with a through shaft-hole in alignment with said firstly men-
tioned shaft-hole, and with a through pin-hole intersecting
said secondly mentioned shaft-hole, as set forth. (2.) In a
golf-club, in combination, a cross-head having its length in
its striking direction cast of aluminium alloy with a through
packing-hole extending from side to side transversely to its
striking direction and with a through shaft-hole extending
from top to bottom at right angles to said direction and at
an inclination to the level of the club-head and intersecting
said transverse packing-hole, a packing of wood shaped and
fitted to said transverse packing-hole and formed with a
through shaft-hole in alignment with said firstly mentioned
shaft-hole and with a through pin-hole intersecting said
secondly mentioned shaft-hole, a club shaft fitted to said
shaft-holes through the casting and wood packing, and a
pin passing through said pin-hole through the packing and
through the club shaft whereby the packing and the club
shaft are caused each to secure the other in the club-head,
as set forth.

(Specification, 4s.; drawings, 2s.)

No. 23525.—13th September, 1907.—LOUIS HENRY
ROGERS, of 227 Willis Street, Wellington, New Zealand,
Commercial Traveller, and ALEXANDER MYERS, of Wel-
ington aforesaid, Merchant. An improved composition for
preventing leakage of air through punctures in pneumatic
tires.

Claims.—(1.) The described composition of matter, con-
sisting of siliceous limestone which has been calcined and
crushed, casein, and water, substantially as described and
for the purpose specified. (2.) The described composition
of matter for stopping punctures in pneumatic tires, con-
sisting of siliceous limestone which has been crushed and
calcined eighty-seven and five-tenths parts, casein eight and
three-tenths parts, and water in quantity sufficient to give a
consistency corresponding to cream, substantially as de-
scribed.

(Specification, 1s. 9d.)

An asterisk (*) denotes the complete specification of an
invention for which a provisional specification has been
already lodged.

NOTE.—The cost of copying the specification and drawing
has been inserted after the notice of each application. An
order for a copy or copies should be accompanied by a post-
office order or postal note for the cost of copying.

The date of acceptance of each application is given after
the number.

Extracts from the drawings accompanying the foregoing
complete specifications appear at the end of this Gazette.

J. C. LEWIS,
Registrar.

Provisional Specifications accepted.

Patent Office,
Wellington, 2nd October, 1907.

APPLICATIONS for Letters Patent, with provisional
specifications, have been accepted as under:—

No. 22707.—A. Baker, clothes-hanger.
No. 22942.—J. L. Thompson, securing blinds to spring
rollers.
No. 22946.—C. L. Russell, removing dust from floors.
No. 23314.—J. R. Moore, collapsible table.
No. 23315.—J. K. Anderson, riveting-machine.
No. 23369.—J. D. McLaurin, meat-brand.
No. 23394.—W. Lizzani, billiard-table.
No. 23398.—B. F. Cranwell, seed-broadcaster.
No. 23399.—E. J. Newman, cycle-tire cover.
No. 23401.—M. E. Cummins, fruit-preserving pan.
No. 23402.—J. G. Hudson and W. McKeegan, signalling
apparatus.
No. 23406.—J. C. Drewet, centrifugal or hydro-extractor.
No. 23407.—F. Broughton, trolley-pole.
No. 23419.—R. H. Millar, trolley-pole.
No. 23420.—A. E. Macindoe, automatic feed-regulator for
boilers, &c.
No. 23421.—W. J. O’Connor, hammer and spanner.