1876
THE NEW ZEALAND GAZETTE.
[No. 85

heating-stove, and the steam from which is passed into the
producer. (4.) In the production of gas, the employment of
a producer and of a distilling-apparatus of approximately
equal dimensions, through both of which is passed the gas
previously heated to the maximum temperature of the cycle,
the said operation being continued so that when the com-
binable contents of the producer have been consumed the
distilling-apparatus is charged with non-volatile products of
distillation, whereby when the flow of gas is reversed the
distilling-apparatus can be used as a producer and the pro-
ducer as a distilling-apparatus. (5.) A modification of the
process described, in which the producer is caused to serve
also as a distilling-apparatus, the gas being withdrawn from
below, cooled to its minimum temperature with withdrawal
of surplus volume and heated to its maximum temperature
by passage through the cycle, and again passed into the
producer at the top thereof and caused to descend through
the upper layer of fresh fuel, whereby the incandescent fuel
in the lower part of the producer is caused to break up the
distillation products into more stable compounds. (6.) Ap-
paratus for producing gas by endothermic reaction, charac-
terized by the interconnection of the parts in such a manner
that the gas itself serves as the heat-conveyer to the pro-
ducer from a stove or stoves in which said heat has been
previously stored, and so that the producer-gas is uncon-
taminated by residual gases from atmospheric combustion.
(7.) Apparatus for the production of gas as set forth in
claim 1, comprising a pair of stoves, one of which acts as a
heating-stove and the other of which acts as a cooling-stove
and stores the abstracted heat, and one or more producers
connected in closed circuit with said stoves, a fan being pro-
vided for promoting a circulation of the gas at its maximum
temperature through the producer or producers, thence into
the cooling-stove, and thence into the heating-stove at its
minimum temperature. (8.) In apparatus as set forth in
claims 6 and 7, additional stoves, means for connecting one
or more of said additional stoves with the producing-device
at will, connections from the operating-stoves to the other
stoves, and means for causing a circulation of gas in either
direction through the producing-device and any one or more
of the stoves at will. (9.) In a gas-making plant, the com-
bination of a gas-producer, two stoves for heating gas to be
delivered thereto, a steam-generator and a condenser, a
means for connecting said producer and steam-generator in
closed series with the said stoves alternately, and means
for heating said stoves alternately. (10.) The improvements
in the process of manufacturing gas substantially as de-
scribed. (11.) A gas-manufacturing plant arranged and
operating substantially as described with reference to Fig. 3,
or to Figs. 4 to 18, of the drawings.
(Specification, £1 1s.; drawings, 6s.)

No. 13925.—22nd August, 1901.—HERMANN BECK and
ANATOLE BORSU, of 1, Holborn Circus, London, England,
Manufacturers’ Agents, and FRIEDRICH KUKEN and ADOLF
HALEMMER, of Bielefeld, Germany, Manufacturers. Im-
provements in centrifugal separators.

Claims.—(1.) In a centrifugal separator, the use, in com-
bination with a rotating bowl, of an insertion composed of a
series of tapered plates such as a surrounding a central
inlet-tube, to which they are attached in such a manner as
to leave slots between their adjoining edges by which the
separated or partially separated milk can pass outwards
towards the periphery of the bowl, substantially as described.
(2.) In a centrifugal separator, the use in combination with a
rotating bowl of an insertion composed of a series of tapered
plates a surrounding a central inlet-tube g, to which they
are attached in such a manner as to leave spaces or slots
between their adjoining edges, a cylindrical cover or mantle i
surrounding said plates, ribs d for dividing up the space
inside the plates, and ribs c for dividing up the space
between the plates and the mantle into several sections,
substantially as described, and illustrated in the drawings.
(Specification, 5s. 6d.; drawings, 2s.)

No. 13930.—26th August, 1901.—GEORGE FANNIN, of In-
vercargill, New Zealand, Clerk. An improvement in the
manufacture of shirts, blouses, or other garments with which
cuffs are or may be used, consisting of a wristband to which
a detached cuff can be attached.

Claims.—(1.) An improvement in the making of shirts,
blouses, or other garments with which cuffs are or may be
worn, consisting of a wristband, as described in the specifi-
cation and illustrated on the drawing, made of linen, calico,
flannel, or other suitable material, sewn on to each sleeve of
the shirt or other garment at the place where the cuff is
usually sewn on the sleeves of shirts or other garments, and
instead of such cuff. (2.) The attachment, by means of
studs, to such wristbands of ready-made detached and de-
tachable cuffs, as set forth, and illustrated on the drawings.
(Specification, 1s. 3d.; drawings, 1s.)

No. 13932.—27th August, 1901.—CHARLES CURHAM, Gas-
works Manager, and REGINALD JOHN KEITH JACKSON,
Solicitor, both of Masterton, New Zealand. A chemical
preparation for the destruction of codlin-moth and blight in
fruit-trees and other trees.

Claim.—A chemical preparation for the drenching
of fruit-trees and other trees for the purpose indicated,
consisting of or containing ammonia, iron-oxide, calcium-
oxide, and sulphuretted hydrogen, compounded and com-
bined substantially in the manner and in the proportions
specified.
(Specification, 1s.)

No. 13953.—29th August, 1901.—ROLAND PHILIP FINCHAM,
of Wellington, New Zealand. An improved washing-board
and rubber.

Claims.—(1.) The improved apparatus for washing clothes
consisting of the washing-board, and rubber for employment
therewith, constructed, arranged, and operating substantially
as specified and illustrated. (2.) The combination of a
washing-board having a corrugated surface, the corrugations
running from top to bottom of the board, and a rubber for
employment thereon consisting of one or a plurality of rollers
having corrugations to correspond with the board, and jour-
nalled in a pair of cheeks between which a handle is secured
by which the rubber may be operated, substantially as speci-
fied and illustrated. (3.) A washing-board having a corru-
gated surface, and holes pierced therethrough, substantially
as and for the purpose specified.
(Specification, 1s. 6d.; drawings, 1s.)

No. 13954.—28th August, 1901.—ALFRED BILLENS, of
Christchurch, New Zealand, Lamp-maker. Improvements
in hand-pumps.

Claims.—(1.) In hand-pumps, the combination with a
pump-barrel having a suction-valve in communication with
the outside supply of an irregular-cone-shaped reservoir that
contains the pump-barrel and receives the discharge from its
delivery-valve, said reservoir being provided with a delivery-
pipe and a foot, as and for the purposes set forth. (2.) In
hand-pumps of the class described, the combination with a
pump-barrel of an irregular-cone-shaped reservoir, said reser-
voir being provided with a delivery-pipe, a gland attach-
ment consisting of the combination of a concavely shaped
diaphragm that seats upon the rim of the pump-barrel and
which contains the packing, and a cover that screws upon
the said barrel, the whole as described and illustrated, and
for the purposes set forth. (3.) The gland attachment to
hand-pumps consisting of the combination of a concavely
shaped diaphragm that seats upon the rim of the pump-
barrel and which contains the packing, and a cover that
screws upon the pump-barrel, thereby holding the gland in
place, as set forth.
(Specification, 1s. 6d.; drawings, 1s.)

No. 13958.—31st August, 1901.—FREDERICK WALTER
PAGE, of Chertsey, Canterbury, New Zealand, Settler. An
improved fencing-dropper.

Claims.—(1.) The improved dropper for wire fencing con-
structed and operating substantially as specified. (2.) A
fencing-dropper having tongues formed integral with it by
partly punching and forcing out the material of which the
dropper is constructed, each tongue adapted to be bent over
one of the wires in a fence, substantially as and for the pur-
poses specified and illustrated.
(Specification, 1s. 6d.; drawings, 1s.)

No. 13966.—3rd September, 1901.—THOMAS ALBERT
PRUDEN, of Waipukurau, Hawke’s Bay, New Zealand,
Painter. An improved composition for destroying cock-
roaches and other noxious insects.

Claim.—A composition for the destruction of cockroaches
and other noxious insects consisting of boracic acid, soda,
and sulphur, mixed together in the manner and in the pro-
portions specified, and with or without a small percentage
of colouring-matter.
(Specification, 1s.)