APRIL 30.1 THE NEW ZEALAND GAZETTE. 1099

cross-shaft inside said connecting-rods, a sleeve between said
guide-rods, which sleeve has at the top thereof a lubricator-
box and at the bottom thereof a pump-rod, said pump-rod
passing through a hole in the frame, the lower end of said
connecting-rods being pivoted to crank-pins, all as and
for the purposes described and as illustrated in the
drawings. (4.) In an improved motion-changing gear for
windmills, a countershaft having an intermediate portion
rotating in a bearing integral with or detachable from a frame
having a vertical passageway or hole therethrough, over-
hanging portions at each end of the said shaft, in combina-
tion with a toothed wheel on one end of said countershaft
having therein two or more crank-pin holes radially ar-
ranged, sad on the other end a crank-arm having two or
more holes therein, said holes being in alignment with those
described and as illustrated in the drawings. (5.) An improved
motion-changing gear for windmills, consisting of a windwheel
sleeve having a toothed pinion thereon driving a toothed.
whecl secured to an overhanging shaft, said wheel having
therein two or more radially arranged crank-pin holes, the
intermediate portion of the said overhanging shaft rotating
within a bearing on the windwheel frame, in combination
with a crank-arm secured to an extended overhanging por-
tion of the aforesaid shaft, and having therein radially
arranged crank-pin holes in a similar plane to those afore-
said, the lower ends of connecting-rods attached to the outer
ends of ormk-pins, the inner ends of which crank-pins are
within the toothed wheel and crank-arm respectively, the
upper end of said connecting-rods being secured to the outer
ends of a cross-shaft, guide-rods pivoted to said cross-shaft
and to an extension of the frame, a sleeve pivoted to said
cross-shaft between the said guide-rods to the bottom of
which is attached the upper portion of the pump-rod and to
the top of mid sleeve a lubricator-box, all as and for the
purposes described and as illustrated in the drawings.
(Specification, 4s. ; drawing, 1s.)

No. 16209.—8th April, 1903.—GEORGE HARRY HAYES,
of 61, Guildford Street, Russell Square, London, England,
Engineer. Improvements in pneumatic drills and like
machines.

Claims.—(1.) In a hand portable pneumatic tool of the
type set forth, an axially oscillating, controlling, and reversing
valve, consisting of a single part arranged across or at right
angles to relatively tied cylinders, a sleeve on the machine-
handle and means operatively connecting said valve and the
sleeve whereby the valve may be moved longitudinally for
the purpose of reversing the revolution of the crank-shaft and
tool. (2.) In a portable pneumatic drilling-machine, com-
prising at least two sets of fluid-pressure cylinders in each set,
and the cylinders in one set arranged substantially at right
angles with the cylinders in the other set, a central transverse
fluid-pressure passage in the machine body between the sets
of parallel cylinders, two controlling valve-chambers between
and at right angles to the parallel set of cylinders and to the
fluid-pressure passage, a partially rotating cylindrical valve in
each valve-chamber, means on the crank-shaft for oscillating
said valves so as to control the admission of fluid-pressure to
and its exhaust from the cylinders, and means on the machine-
handle operatively connected to said valves so as to move
both valves simultaneously for reversing the working of the
machine, substantially as set forth. (3.) A hand portable
pneumatic drilling-machine, having a main casing or body
formed in one casting, comprising at least four fluid-pressure
cylinders arranged in pairs, two controlling valve-chambers
arranged transversely to and between the pairs of cylinders,
a central transverse fluid-pressure passage connecting directly
with the valve-chambers and with the pressure inlet in the
machine-handle, an oscillating, controlling, and reversing
valve in each chamber for controlling the admission of pres-
sure to and its exhaust from a pair of cylinders, a collar slid-
ably mounted on each valve and held against rotation on the
valve, means connecting said collars with eccentrics on the
crank-shaft, and a T-shaped yoke connecting said valves and
itself operatively connected to a sleeve on the machine-handle,
all substantially as described with reference to the drawings
and for the purposes specified. (4.) In a portable pneumatic
drilling-machine, the combination with relatively fixed
cylinders of an oscillating, controlling, and reversing valve,
consisting of a single hollow part arranged transversely to a
pair of cylinders, means connected with the crank-shaft for
oscillating the valve, and means connected with the machine-
handle for moving the valve longitudinally, a double set of in-
let passages on the exterior of the valve and a double set of
exhaust ports leading to its interior, said passages and ports
having substantially the form and arrangement as illustrated
in Figs. 5, 7, and 11 of the drawings, all operating substantially as and for the purposes set forth. (5.) In a portable
pneumatic drilling-machine, the combination with relatively
fixed cylinders of an oscillating, controlling, and reversing
valve, consisting of a single hollow part arranged transversely
to a pair of cylinders, means connected with the crank-shaft for

oscillating the valve, and means connected with the machine-
handle for moving the valve longitudinally, a double set of
inlet ports connecting with the interior of the valve, a double
set of exhaust passages having substantially the form and ar-
rangement illustrated in Figs. 6, 12, and 15 of the draw-
ings, all operating substantially as and for the purposes set
forth. (6.) In a portable pneumatic tool, substantially as
set forth and claimed, an oil-bath gear-case, comprising an
annular section or part 58 detachably connected to the
machine body, an annular cover part or neck 58a detachably
connected to the machine body and to the gear-case, and
fluid-pressure exhaust ports in the gear-case and cover, said
ports registering with the controlling valve-chambers in the
machine body, substantially as described and illustrated in
Figs. 3 and 16 of the drawings.
(Specification, 13s. ; drawings, 4s.)

No. 16211.—6th April, 1903.—LOUIS JOSEPH RENOV, of
Auch, France, Manufacturer. Improvements in boilers for
cooking purposes.

Claims.—(1.) A boiler of the class described, consisting of a
receptacle and cover of the form of a pointed arch, which,
being surrounded by a cylindrical casing, is fixed to the
latter, substantially as described. (2.) A boiler of the class
described and referred to in the first claiming clause, having
between its receptacle and cover, which both are tightly
united by means of flanges and screw-bolts, a channel-like
place for receiving the condensed water generated in the
boiler, substantially as described. (3.) A boiler of the class
described and referred to in the preceding claiming clauses,
having a double bottom with a steam inlet and outlet cock
and an outlet tube with a cock fixed to the principal bottom
of the boiler, substantially as described.
(Specification, 3s. 3d. ; drawing, 1s.)

No. 16221.—7th April, 1903.—ROBERT LOUIS HOWELL
MURRAY, of 193, Karangahape Road, Auckland, New Zea-
land, Electrician. Improvements in acetylene-gas genera-
tors.

Claims.—(1.) The construction of an automatic water-
supply valve, weighted rod, and tsp connections. (2.) A car-
bide crate so arranged in compartments with a vertical
ledge which allows the water to operate upon the carbide in
one at a time, then passing to the next compartment. (3.) A
vertical pipe fixed in dome of gas-holder to act as a
safety-valve. (4.) The manner in which the generating-
chamber door is made gastight by a projection in the door
pressing in a rubber bend inserted in a dovetailed groove in
the opposite face. (5.) The arrangement of filter and puri-
fier, and the general construction and combination of parts,
as set forth in the drawings and specification.
(Specification, 4s. 3d. ; drawing, 1s.)

No. 16224.—14th April, 1903.—CHARLES MACINTOSH MOR-
BISON, of Auckland, New Zealand, Billiard-marker. An im-
proved pocket-book.

Claims.—(1.) In pocket-books and the like, securing the
two side covers of the book together by means of a tape
secured to one cover and wound around and across both
covers in such a manner that the tape will form hinges to
permit of the pocket-book opening from either side, as
specified. (2.) In pocket-books and the like, securing the
two side covers of the book together by means of a tape
secured to one cover and wound mound and across both
covers in such a manner that the tape will form hinges to
permit of the pocket-book opening from either side, and will
also form bands across the inside faces thereof adapted to
retain papers and the like placed beneath them, as specified.
(Specification, 2s. 3d. ; drawing, 1s.)

No. 16226.—15th April, 1903.—WILLIAM DURHAM SAR-
GENT, of 170, Broadway, New York, United States of
America, Manufacturer. Method of making brake-shoes and
product thereof.

Claim.—(1.) The process of making brake-shoes which
consists in forming a briquette or insert-block of cast metal
containing filaments of malleable metal and afterwards
placing said blocks in a sand mould and imbedding the
same by casting around them the metal to form the body
of the shoe. (2.) The process of making brake-shoes which
consists in providing a metal-mould, placing therein a quan-
tity of malleable metal, pouring in a quantity of hard cast
metal to form a briquette, and thereupon placing a series of
said briquettes in a brake-shoe mould and covering the same
with softer cast metal, substantially as described. (3.) The
process of making brake-shoes which consists in providing
a briquette or insert composed of hard cast metal cast