APRIL 18.] THE NEW ZEALAND GAZETTE. 1269

conductor, a movable coil, a contact-tongue, a contact-sur-
face of five or more separate insulated sections, and means in
connection with certain of the said insulated sections whereby
the movements of greater amplitude of the tongue are caused
either to send corresponding current-impulses into another
cable, or to perforate or impress corresponding additional in-
dications upon a tape or strip, or to operate one or more
separate indicating-devices such as ink-rollers or pencil-
points. (10.) The telegraphic receiving and retransmitting
and perforating or impressing arrangements substantially as
described, and illustrated with reference to Figs. 5, 6, and 7 of
the drawings.

(Specification, 19s. 6d. ; drawing, 3s.)

No. 22505.—4th March, 1907.—GEORGE RISCHMULLER,
of 842 37th Street, Oakland, Alameda County, California,
United States of America, Manufacturer of Door-openers.
Turbines.

Extract from Specification.—This invention relates to im-
provements in turbines, the object of this invention being—
first, to provide a turbine which can be constructed at a com-
paratively small cost, requiring very little machining or fitting
of parts; second, to provide one which will be as small and
compact as possible for a given development of power, and
for this reason to so construct it that at no time shall there
be any dead steam contained in any of the recesses of the
turbines not actually doing work in propelling the turbine;
third, to provide one in which the recesses for admitting
the steam shall vary but slightly in size, and shall be distributed
as evenly as possible over the surface of the moving member,
and yet at the same time allow for the expansion of the steam
in passing from one series of recesses to another; fourth,
to provide one in which the pressure on both sides of the
movable member shall be evenly balanced, thereby avoiding
any vibration or undue friction; fifth, to provide a con-
struction in which the steam shall enter and leave the re-
cesses in the most effective manner for imparting its momentum
to the movable member.

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

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

No. 22507.—4th March, 1907.—FRANK WEST SUTER, of
67 St. John’s Park, Upper Holloway, North London, Eng-
land, and CHARLES WAYMAN, of 12 Princes Avenue, Church
End, Finchley, North London, England, Engineers. An
improved safety-lamp and air-carburetting apparatus there-
for.

Claims.—(1.) In a lamp for burning carburetted air, utilis-
ing the heat of the flame to warm the air flowing into and
enveloping the carburetting-chamber, substantially as and for
the purpose described. (2.) In a lamp for burning carburetted
air, the combination with the carburetting-chamber of an
air-jacket and air-inlets so disposed near the burner or in
conjunction with a globe, such as R, that the inflowing air
is heated before entering the jacket-space and the carburetter,
substantially as described. (3.) In a lamp for burning car-
buretted air, the combination with the carburetting-chamber
of an air-jacket through which passes air heated by the flame,
and ports or valves so arranged and operated as to enable
the simultaneous regulation of the flow of air into the car-
buretter, the flow of inflammable mixture therefrom, and the
supply of fresh air from the jacket-space to this mixture
in the burner-tube, substantially as described. (4.) The com-
bination and arrangement of parts constituting the com-
plete lamp for burning carburetted air, substantially as de-
scribed, or illustrated in Figs. 1, 2, 2A, and 2B, or in Figs. 3,
4, 5, 6, and 7, or in Fig. 8, of the drawings.

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

No. 22517.—6th March, 1907.—HENRI PATAUD, of 15
Rue de la Federation, Paris, France, Civil Engineer. Im-
provements in vehicle-wheel rims.

Claims.—(1.) A detachable rim comprising two grooved
rings, which when fitted into each other form an annular
housing in which is placed an elastic collar characterized by
this, that the elastic collar has a recess m in which is intro-
duced a rubber washer l intended to be pressed, in the working-
position of the rim, against a recess n on the movable part
of the rim, so as to insure tightness of the annular housing.
(2.) A detachable rim according to claim 1, in which the open-
ing and closing of the collar are effected by turning a screw t,

engaging a piece in the form of a wing-nut s, in which it may
turn freely, and whose free ends are joined to toggle-links
f, g, which in their turn are articulated to the free ends of
the elastic collar, said screw having its purchase from a
cover u, secured tightly on the fixed part of the rim.

(Specification, 2s. ; drawing, 1s.)

No. 22518.—6th March, 1907.—THE IMPERIAL WRITING-
MACHINE COMPANY, LIMITED, a body corporate established
under the laws of the Dominion of Canada, and having its
headquarters at No. 80 St. Francois Xavier Street, Montreal,
Quebec, Canada (assignees of Charles Wesley Davis, Manu-
facturer, and George William Davis, Superintendent, both of
No. 45 Mackay Street, said City of Montreal, and Wellington
Parker Kidder, of Jamaica Plains, Boston, Massachusetts,
United States of America, Inventor). Improvements in
typewriters.

Extract from Specification.—The invention may be said
briefly to consist of a new carriage-frame, including means
for securing the same to the machine-frame; new anti-
friction means for supporting the carriage in its supporting-
frame; novel marginal stops, new tabulator mechanism,
novel escapement mechanism, including universal-bar me-
chanism, and devices for yieldingly retaining the universal
bar and escapement pawls in their normal positions; novel
space-back mechanism; novel automatic ribbon-feeding and
reverse mechanism operated through the medium of the
universal-bar mechanism; novel means for operating the
ribbon-rocker so that the rocker can be rocked when the
ribbon is being reversed without affecting the operation of
the universal bar; novel means for releasing the escapement
rack from its pinion; novel means for varying the extent
of rotation of the platen; novel platen-lock; novel means
for pressing the paper upon the platen; novel type-bar and
type-bar action whereby all sliding connections or contacts
between the type-bar and key-levers are dispensed with;
means for overcoming the unsteadiness of the space-bar;
shift devices and lock including a particular spring connection
between certain of the parts whereby the shift-keys are re-
turned to their normal positions and yieldingly held there;
a novel stop for limiting the movement of the space-bar in
both directions; novel arrangement of the shift-shafts to facili-
tate assembling and dismembering of the operating mechanism
of the machine.

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

(Specification, £2 18s. ; drawing, 11s.)

No. 22525.—5th March, 1907.—NELSON GOODYEAR, of
Manhattan, New York (Post-office address, 21 Barclay Street,
New York City, New York), United States of America,
Engineer. Improvements in acetylene-generators.

Extract from Specification.—This invention relates to
acetylene-generators, and its objects are, in general, to improve
upon the construction of such generators and increase their
efficiency and certainty of operation. Other objects of the
invention are to improve the carbide-feeding mechanism of
the generator, to insure the opening of a vent to a generating-
chamber when the flush-out or lime-gate for moving the
residuum is open, to insure the opening of the vent when
water is introduced into the generating-chamber, and to pre-
vent the vent from being left open after charging the machine.
The gasometer is of an improved type, of which the filter is
contained within the gasometer-tank, and suitable drainage-
means, blow-off and gas-washing means are provided in the
gasometer.

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

(Specification, £1 ; drawing, 2s.)

No. 22526.—5th March, 1907.—GEORGE TAYLOR MUIR,
THOMAS MCLEOD MUIR, and JAMES KENNEDY MUIR (the
Younger), trading together as “J. and T. Muir,” of Leveson
Street, North Melbourne, Victoria, Australia, Ironfounders
(assignees of Walter Charles Turpel, of Golden Anchor Hotel,
George Street West, Sydney, New South Wales, Australia,
Moulder). Improved manufacture of sash-weights and
apparatus used therein.

Claims.—(1.) An improved manufacture of sash-weights
consisting in forming a series of moulds in one box, with a
common transverse gate pattern, plugging the outer ends of
each mould, fitting removable line-slot chill-cores therein,