JULY 27.] THE NEW ZEALAND GAZETTE. 1821

pervious top through which the air passes to cause the ore to
stratify, the riffles upon said top by which the gradual separa-
tion of the stratas can be effected, and the longitudinal
vibration which causes the material to travel from the head
to the foot of the table. A further important feature is the
use of tapering riffles upon dry-concentrating table having a
pervious top, said riffles being either of advancing terminals or
otherwise arranged. It will therefore be obvious that changes
may be made in the details of construction and configuration
without departing from the spirit of the invention as defined
by the claims.

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

(Specification, 18s.; drawings, 4s.)

No. 19614.—20th June, 1905.—HENRY MOORE SUTTON,
WALTER LIVINGSTON STEELE, and EDWIN GOODWIN STEELE,
all of Dallas, Texas, United States of America, Electricians.
Improvements in dielectric separators.

Extract from Specification.—Our invention, briefly stated,
consists in developing in the particles or components to be
separated dielectric hysteretic impedance. Our invention
also consists in various modifications in the degree, periodi-
city, and maintenance of said impedance as will be hereinafter
more fully set forth. Dielectric hysteretic impedance may
be produced from various sources of energy, and by various
manners of and means for applying the same. In the present
instance we employ an alternating, varying, or, it may be, pul-
sating static current to produce dielectric hysteresis in the
substance we desire to separate, and this dielectric hysteresis
impedes the static charges on the surface of the particles of
the mixture, and is what we have denominated dielectric
hysteretic impedance. This, the governing factor in our
process, may be produced by static currents that alternate
in polarity making an alternating static field, or by static
charges which are pulsating but of the same polarity making
a pulsating static field, or by static charges which vary in
strength making a static field of varying intensity, or by alter-
nating static currents of unequal periods, the positive polarity
being of longer duration than the negative, or vice versa; or the
said impedance may be produced by any one of the above-
mentioned types of currents, or by a combined or simultane-
ous use of any one or more of them, as variation of a static
current will produce dielectric hysteresis, but the latter seems
more marked in an alternating static current. And we have
discovered that certain substances respond to a given periodi-
city more readily than others, the range observed, though
not to be taken as a limitation of our invention, being from
two to twenty-five alternations per second. The development
of a sufficient dielectric hysteretic impedance to cause par-
ticles to be swerved from a normal path, or to adhere to a
conveying surface, is the proper measure of frequency of
alternation or variation, and this differs with the different
particles of substances. This result having been produced in
some of the particles, other particles thereof in which impe-
dance develops at a different speed of alternation or variation
are in condition for actual separation by subsequent treat-
ment or by mechanical or other means. Again, some
particles are more susceptible to a negative charge than to
a positive, or vice versa, as the molecules more easily turn
on their axis in one direction than the other, so that changes
in polarity of the static field and of periodicity have effective
value in developing in the particles the desired hysteresis.

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

(Specification, 12s.; drawing, 1s.)

No. 19615.—20th June, 1905.—THE AUTOMATIC METER COM-
PANY, of Crossley Building, San Francisco, California, United
States of America, Manufacturers and Vendors of Meters,
assignees of Richard William Gallagher, of Montclair Apart-
ments, San Francisco, aforesaid, Electrician. Bill-delivery
mechanism for meters.

Claims.—(1.) In an apparatus of the character described,
the combination, with meter-gearing, of a recording-wheel, a
gear-wheel for intermittently advancing said recording-
wheel, means for moving the recording-wheel bodily to take
a record therefrom, and an operative connection between
said gear-wheel and gearing, substantially as described.
(2.) In an apparatus of the character described, the com-
bination, with meter-gearing, of a wheel provided with pins
for perforating paper to form a character, a gear-wheel for
intermittently advancing said recording-wheel, means for
moving the recording-wheel bodily to take a record there-
from, and an operative connection between said gear-wheel
and gearing, substantially as described. (3.) In an apparatus
of the character described, the combination, with meter-
gearing, of a recording-wheel, a gear-wheel for intermittently
advancing said recording-wheel, means for moving the re-
cording-wheel bodily to take a record therefrom, an opera-
tive connection between said gear-wheel and gearing, inopera-
tive when the wheel has been so moved, and means adapted
to be brought into operative connection with said gear-wheel
when the latter is out of operative connection with the gear-
ing to turn said wheels to zero, substantially as described.
(4.) In an apparatus of the character described, the com-
bination with meter-gearing of a recording-wheel, an opera-
tive connection between said gearing and recording-wheel
whereby the recording-wheel is advanced intermittently from
the continuous advance of the gearing, means for moving
said recording-wheel bodily to take a record therefrom, and
means for turning said recording-wheel independently of the
gearing, substantially as described. (5.) In an apparatus of
the character described, the combination, with meter-gearing,
of a recording-wheel, a gear-wheel for advancing said record-
ing-wheel, said wheel being operatively connected with the
gearing, means for moving said recording-wheel bodily to
take a record therefrom, a shaft, a gear-wheel thereon, and
means for moving said latter gear-wheel into mesh with the
former when the recording-wheel has been so moved bodily
and revolving said recording-wheel independently of the
gearing, substantially as described. (6.) In an apparatus of
the character described, the combination of a recording-
wheel, a gear-wheel operatively connected therewith, a longi-
tudinally movable shaft threaded at one end, a gear-wheel
on said shaft, an internally threaded winding-key on said
threaded end, and an abutment against which said winding-key
impinges after it has been screwed through a predetermined
distance on the threaded shaft, whereby the continued turn-
ing of said key moves said shaft longitudinally, substantially
as described. (7.) In an apparatus of the character described,
the combination of a fixed shaft, a recording-wheel and a
driving-wheel loose on the shaft, a stop carried by the record-
ing-wheel, a cam carried by the driving-wheel, a coiled spring
connected at its ends to said wheels, a latch, and a fixed
bearing therefor, said latch engaging said stop to arrest
the movement of the recording-wheel, and being en-
gaged by the cam to be withdrawn from said stop to
release said recording-wheel, substantially as described.
(8.) In an apparatus of the character described, the
combination of a fixed shaft, a recording-wheel and
driving-wheel revolving loosely thereon, a coiled spring con-
nected at its ends to said recording-wheel and driving-wheel,
a circular series of stops on the recording-wheel, a circular
series of cams on the driving-wheel, a pair of diametrically
opposite latches, and a bearing-plate therefor secured to the
shaft, said latches moving radially from the shaft, each latch
in turn engaging one of the stops while the other latch is
midway between two stops on the opposite side of the
recording-wheel, and each latch in turn being engaged by one
of said cams, substantially as described. (9.) In an apparatus
of the character described, the combination of a frame for
supporting a sheet of paper, a carrier-plate adapted to be
moved towards said frame, pins secured to the under-side of
said plate, standards on said plate, a recording-wheel pivotally
mounted between said standards, said recording-wheel having
pins thereon adapted to perforate the paper on said frame when
the plate is moved thereon, meter-gearing, and an operative
connection between said gearing and said recording-wheel,
substantially as described. (10.) In an apparatus of the
character described, the combination of a frame for support-
ing a piece of paper, a plate movable towards said frame, a
recording-wheel and a dating-wheel carried by said plate,
meter-gearing operatively connected with said recording-
wheel, and means for turning the dating-wheel, operated by
the movement of the plate, substantially as described. (11.)
In an apparatus of the character described, the combination
of a plate for supporting a sheet of paper, a frame movable to
and from said plate, a recording-wheel carried by said frame,
meter-gearing operatively connected with said recording-
wheel when in one position, a shaft extending beneath the
plate, eccentrics secured to the ends of the shaft outside the
plate, collars on said eccentrics, and a bar connected to the
frame and connected at its ends to said collars, substantially
as described. (12.) In an apparatus of the character de-
scribed, the combination of a plate for supporting a sheet of
paper, a frame movable to and from said plate, a recording-
wheel carried by said frame, pins on said recording wheel
adapted to perforate said paper, meter-gearing operatively
connected with said recording-wheel when in one position,
means for moving said frame to and from said plate to cause
the pins to perforate the paper, and means operated with the
return movement of the frame, but only after the pins have
left the paper, to advance said paper, substantially as de-
scribed. (13.) In an apparatus of the character described,
the combination of a meter, operated automatically and con-
tinuously by the passage of the current being measured,
recording-wheels, means for moving said recording-wheels
intermittently in correspondence with the amount measured,
and means for taking an impression from said recording-
wheels, substantially as described. (14.) An apparatus of
the character described, the combination of counting-wheels