148
THE NEW ZEALAND GAZETTE.
[No. 6

down nearly to the surface of the bath to shield the article
from the heat where it is drawn, substantially as described.
(5.) In combination with glass-drawing apparatus such as is
set forth in the preceding claim, glass-drawing mechanism
arranged to act upon the glass substantially as described.
(6.) In glass-drawing apparatus a drawing-pipe connected
to a supply of air or other fluid under pressure, and me-
chanism for automatically regulating the fluid-supply
during the drawing-operation, substantially as described.
(7.) Glass-drawing apparatus comprising a receptacle con-
taining molten glass, a frame above it, mechanism for
moving the frame vertically, and a blowing-pipe detachably
secured to the frame, substantially as described. (8.) In
combination with the receptacle containing molten glass
having its bottom within a heating-chamber, a water-cooled
ring above the level of the glass, substantially as and for the
purpose set forth. (9.) In glass-drawing apparatus, a tank
furnace having a front extension, means for heating the
glass in the extension, and means for shielding the glass
from the heat near the point of drawing, substantially as
described. (10.) Glass-drawing apparatus comprising a
tank furnace having a front extension supplied with molten
glass feeds from the tank, glass-drawing mechanism arranged
to draw from the glass in the extension, means for heating
that portion of the glass from which the article is drawn, a
device for chilling the article by radiation near where it is
drawn, and a shield for protecting it, where it is drawn, from
the external heat, substantially as described.
(Specification, 7s.; drawings, 3s.)

No. 14434.—15th January, 1902.—GEORGE WESTING-
HOUSE, of Westinghouse Building, Pittsburg, Pennsylvania,
United States of America, Manufacturer. Improvements in
internal-combustion engines.

Claims.—(1.) An internal-combustion engine with a
plurality of co-axial explosion-cylinders, the pistons of
which are connected in tandem, explosive charges being
supplied to each end of one cylinder and to one end of the
other cylinder, so that three impulses may be given to the
piston during every two revolutions of the engine-crank.
(2.) In a gas-engine having a plurality of co-axial explosion-
cylinders, inlet and exhaust valves for admitting explosive
mixture to the adjacent ends of the cylinders and exhausting
the products of combustion therefrom, said valves being all
located in a casing between the adjacent ends of the
cylinders, and being arranged to move at right angles to the
line of movement of the pistons, substantially as described.
(3.) In an internal-combustion engine having a plurality of
explosion-cylinders or a double-acting cylinder, the provision
of valves for cutting off the supply of explosive mixture from
either or both ends of the double-acting cylinder or from
any of the cylinders at will, so as to effect economy in
operation. (4.) Internal-combustion engines with two or
more co-axial cylinders constructed and operating sub-
stantially as described with reference to the drawings.
(Specification, 5s. 3d.; drawings, 2s.)

No. 14436.—7th June, 1901.—EDWARD COVERLY NEW-
COMB, of 1071, Centre Street, Jamaica Plain, Massachusetts,
United States of America, Mechanical Engineer, and PHILIP
VAN VOLKENBURGH, of 45, Cedar Street, New York City,
New York, United States of America, Lawyer. Improve-
ments in method and means for generating steam or vapour.

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

Extract from Specification.—My invention has special
reference to methods of and apparatus for generating steam
or vapour, although some of the features of the invention
may be advantageously employed for other purposes, such as
the heating of air, water, or other fluids. In order to main-
tain a supply of steam at a substantially uniform pressure
and temperature it has been the universal practice hereto-
fore to utilise potentially active reserve energy in one form
or another to compensate for the variations in the demand
upon the supply. In the ordinary steam-boiler the reserve
energy is mainly supplied by the body of water in the boiler,
which is maintained at the temperature and the pressure
of the steam generated therein. When the demand for
steam is below normal this body of water absorbs the heat
supplied in excess of that necessary to generate the steam
being used, and when the demand for steam exceeds that
generated by the normal source of heat the heat stored in
the water supplies the deficiency. According to another
type of steam-generator, a supply of heat is maintained
which is in excess of that necessary to generate sufficient
steam to meet the maximum demand of the apparatus, and
the water is supplied to the generator in limited quantities,
the attempt being to generate only sufficient steam to meet
the demand from time to time. In order to meet variations
in the demand for steam in generators of this type without
maintaining the source of heat at its maximum, a supply of
heat in reserve is always maintained in practice by provid-
ing a body of suitable heat-absorbing material, which acts
as a reservoir of heat to supplement the normal source of
heat when the demand for steam is in excess of the normal.
Generators of the first type are dangerous, especially in the
hands of careless or inexperienced operators, by reason of the
explosive nature of the body of water therein, as when
suddenly released from pressure. Generators of the second
type are unreliable in operation, and they are short-lived, and
when used for motive-power they require engines and other
apparatus of special construction, which apparatus is also
short-lived and unreliable in operation. Generators of both
types, moreover, require considerable experience and skill for
their successful manipulation. They are also more or less in-
efficient as to the absorption and utilisation of the heat, and
they are more or less bulky and heavy and expensive to con-
struct and maintain. It has been found impracticable, fur-
thermore, to deliver steam from the generators of either
class hitherto devised at a substantially uniform degree of
superheat, although it is well known that for power pur-
poses steam in a substantially uniform superheated con-
dition is much more efficient than when in a saturated or a
nearly saturated condition. My invention has for an object
to provide methods of and apparatus for generating steam
by which the defects above referred to are practically over-
come. While some of the features of my invention may be
embodied in apparatus designed for various purposes, as for
heating air, water, or other fluids, my invention is more par-
ticularly addressed to the provision of an apparatus whereby
a supply of steam or vapour may be uniformly maintained a
any desired degree of superheat, and at any desired pressure,
regardless of any variations of demand within the capacity
of the apparatus that may be made upon the supply, and
also to the provision of an apparatus whereby such a supply
of steam or vapour may be maintained without involving the
use of a considerable quantity of potentially active reserve
energy. Other objects of my invention are to provide an
apparatus of the character referred to which is automatic in
its operation and easy to control, and one which at the same
time is safe and reliable and efficient, even in the hands of
careless or inexperienced operatives; also one which may be
put into active condition without delay, and which is sensibly
instantaneous in its ability to accurately adjust itself to
greatly varying loads or demands upon it, and to otherwise
simplify and render more practical and efficient the use of
steam, and especially superheated steam, for power purposes,
and particularly in situations where the demand for power
varies greatly and the variations are sudden and irregular,
as in the propulsion of automobiles.

[NOTE.—The number and length of the claims in this case pre-
clude them from being printed, and the foregoing extract from the
descriptive part of the specification is inserted instead.]
(Specification, £3 18s.; drawings, 4s.)

No. 14437.—16th January, 1902.—THE BARWEST COASTER
BRAKE COMPANY, a corporation having their principal office
at 99, Chambers Street, New York, United States of America
(assignees of George Fisher Barton, of 614, West Gray Street,
Elmira, New York aforesaid, Engineer). Improvement in
driving and braking mechanism for wheels.

Claims.—(1.) A driving and braking mechanism for
wheels comprising a wheel-hub provided with an internal
flange, a driving-member extending within the wheel-hub and
rotatable independently thereof, and a clutch-dog provided
with a slot embracing the flange on the hub and being wider
than the flange to permit rocking thereon, said clutch-dog
having rocking and driving engagement with the driving-
member whereby it may be caused to engage with said
hub-flange and thereby rotate the hub when the driving-
member is rotated in a forward direction, substantially as
set forth. (2.) A driving and braking mechanism for wheels
comprising a wheel-hub provided with an internal flange, a
driving-member and a brake-actuating member within the
hub and rotatable independently thereof, and a clutch-dog
having rocking and driving engagement with the driving-
member and being adapted to engage the flange on the wheel-
hub when rocked in one direction from a neutral position,
and to engage with the brake-actuating member when rocked
in the opposite direction from a neutral position, substantially
as set forth. (3.) A driving and braking mechanism for wheels
comprising a wheel-hub provided with an internal toothed
driving-flange, a driving-member and a brake-actuating
member within the hub, said brake-actuating member being
provided with a toothed flange arranged opposite and con-
centric with the flange on the hub, and a clutch-dog having
oppositely inclined slots on opposite sides embracing said
flanges, and being wider than the flanges to permit rocking