3534
THE NEW ZEALAND GAZETTE.
[No. 105

movable projections arranged to enter the depressions of the
inseam of a shoe for guiding the same at a uniform distance
from the cutter. (5.) An inseam-trimmer comprising a cutter,
and an adjustable or other gauge arranged to engage the welt
substantially at the crease or angle only, the distance of the
work from the cutter being determined solely by the gauge.
(6.) An inseam-trimmer comprising a cutter, and a gauge
consisting of a freely rotatable wheel mounted to engage the
stitches of a shoe-inseam and position the cutter solely by
the engagement of the wheel with said stitches. (7.) An
inseam-trimmer comprising a knife oscillating in a path
extending transversely across the inseam of a shoe, and a
gauge arranged to engage the inseam to support it against the
thrust of the knife. (8.) An inseam-trimmer comprising a
gauge adapted to bear against the inseam of a shoe, and an
oscillating knife having a cutting-edge oblique to its path
of motion and arranged to press the work against the gauge
during the cutting stroke, the operative stroke of the knife
exerting pressure in a direction toward the gauge. (9.) An
inseam-trimmer comprising an oscillating knife-blade curved
circularly about its centre of oscillation and having its cutting-
edge oblique to its path of motion, a stop beside said blade
adapted to bear upon the insole of a shoe, and a gauge con-
structed and arranged to engage the stitches of the inseam
of the shoe and guide the same at a uniform distance from
the knife and hold the work against the cutting-pressure of
the knife, the operative stroke of the knife exerting pressure
in a direction towards the gauge. (10.) An inseam-trimmer,
comprising an oscillating knife-blade curved circularly about
its centre of oscillation and having its cutting-edge oblique
to its path of motion, and a gauge consisting of a serrated
or other disc loosely pivoted approximately in the path of
oscillation of the knife, the operative stroke of the knife
exerting pressure in a direction toward the gauge.

(Specification, 8s. ; drawing, 1s.)

No. 23599.—16th October, 1907.—FRED BENNITT, of Bar-
ber Building, Joliet, Will, Illinois, United States of America,
Lawyer (assignee of Arthur Smith Dwight, of 25 Broad
Street, and Richard Lewis Lloyd, of 71 Broadway, New
York, United States of America, Engineers). Improvements
in and relating to processes of roasting and sintering ores.

Extract from Specification.—Referring to Fig. 1, which
typifies the essential features of construction and the
mode of operation of a class of devices that have been
heretofore used in desulphurising and sintering ores, 1 indicates
the approximately vertical walls of the ore holder or recep-
tacle; 3 indicates means for confining or retaining the mass
of ore on one of its sides, in this case being at the bottom ;
4 indicates a duct through which can be supplied oxygen
or other agent for supporting combustion or maintaining
the chemical reaction which is desired in the interior of the
ore-mass. This supply-duct is shown as communicating
with a distributing-chamber 7 below the ore supporting or
retaining wall or floor 3. As indicated by the arrows, the gas,
or other reagent, is delivered through the duct 4 into the
distributing-chamber 7 below the mass, and is forced upward
through the lower surface of the ore-mass. In operation the
ore is ignited, in any suitable way, at the bottom. With an
apparatus such as shown in Fig. 1, the disturbing or agitating
action on the particles in the bottom of the mass caused
by the up-blast of air can, to some extent, be balanced or over-
come by the weight of the superincumbent parts of the mass
as above explained, and throughout such lower parts more
or less complete sintering can be attained. The sinter so
formed in the lower part of the mass is, generally, relatively
highly porous or cellular, and more freely permeable (than
the original mass of pulverulent fines) by the currents or jets
of air. Consequently, as the combustion, and the sintering,
advances upward the lifting efficiency of the air-blast becomes
relatively greater, and the particles of the ore in the upper
regions of the mass become more and more liable to agitation,
displacement, and disturbance. The forcing of the air up-
ward through the more or less pulverulent mass results in
the formation at the upper surface of “blowholes” or
“craters,” these extending to a greater or less depth from
that surface, and furnishing not only centres of violent dis-
turbance, but also channels of least resistance for the escape
of air. Consequently, there is throughout the top stratum
of the mass a lack of uniformity in the reaction of the oxygen
and the combustible parts of the ore. Highly seared lines
of particles forming craters are left surrounded by regions of
fine non-agglomerated material.

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

(Specification, £1 14s. 6d.; drawing, 1s.)

No. 23601.—16th October, 1907.—NEIL LESLIE NICHOL-
SON, of Invercargill, New Zealand, Sawmiller. An improved
gauge for saw-benches.

Claims.—(1.) A gauge for saw-benches, comprising, in
combination, a bar having a cross-head on its forward end,
a supporting-frame for carrying the bar and consisting of
rollers mounted in a frame and upon which the bar rests so
as to be capable of sliding longitudinally at right angles to
the saw-bench, and means for retaining the forward end of
the bar at any desired distance from the saw, substantially
as specified. (2.) A gauge for saw-benches, comprising, in
combination, a bar having a cross-head on its forward end
and holes at intervals throughout its length, a supporting-
frame carrying the bar at right angles to the saw-bench
and consisting of a pair of cheeks arranged one on each side
of the bar, a pair of rollers extending across between the
cheeks at their back end and arranged one above and one
below the bar, a single roller extending across between the
cheeks at their forward end and underlying the bar, a block
fixed to the cheeks above the bar, a gauge-pin fitting into
any one of the holes in the bar, and a gauge-block adapted
to be held on the bar by the gauge-pin, substantially as
specified. (3.) The general arrangement, construction, and
combination of parts in my improved gauge for saw-benches,
substantially as described and explained, as illustrated in the
drawings, and for the several purposes set forth.

(Specification, 4s. 3d. ; drawing, 1s.)

No. 23603.—17th October, 1907.—ARTHUR ALVIN FRIE-
STEDT, of No. 1,200 Tribune Building, Chicago, Cook, Illinois,
United States of America, Manufacturer. Improvements in
metal sheet piling.

Claims.—(1.) In sheet piling constructions comprising sec-
tion units and means for loosely retaining joining sections
in assembled relation, the arrangement being that said means
does not extend throughout the length of said section. (2.) A
sheet-piling construction as set forth in claim 1, wherein
said means are in the form of clips, and wherein the clips
are located at diagonal corners of the pile units. (3.) A
sheet-piling construction as set forth in claim 2, wherein the
clips are located in diagonal planes with respect to said sections,
thereby separating the clips of adjoining sections. (4.) A
sheet-piling construction as set forth in claim 1, wherein the
sections are provided with engaging flanges, and wherein the
clips co-operate with said flanges to prevent lateral displace-
ment of the pile units. (5.) A sheet-piling construction as
set forth in claim 4, wherein the clips are so constructed as
to permit endwise telescoping assembling of the pile units.
(6.) A sheet-piling construction as set forth in claims 4 and 5,
wherein engaging sides of joining sections are each provided
with one clip secured at one end to the section and free at
the other end, the free end of the clip of one section engaging
and holding the joining section in interlocking telescoping
relation to its companion section.

(Specification, 6s. 6d. ; drawing, 2s.)

No. 23615.—17th October, 1907.—JAMES RICHARD
MALLYON, of “Otterbourne,” Yass, New South Wales, Aus-
tralia, Station-manager. An improved locking-attachment
for retaining gates in open and closed positions.

Claims.—(1.) An improved locking-bar for gates, com-
prising a guiding-rod secured to the gate, a locking-bar piv-
ally and movably connected to said guiding-rod, catches for
supporting the free end of said bar, and means for securing
the bar in position when the gate is closed, and for retaining
the gate at a desired width of opening, substantially as and
for the purposes set forth. (2.) An improved locking-bar
for gates, comprising a guiding-rod secured to the gate, a bar
fitted at one end with a lug piece, which is pivotally con-
nected to a link slidably mounted on said guiding-rod, a
metal shoe fitted to the free end of said bar and provided
with an aperture for the reception of a pin, a catch on the
latching-stile and on the latching-post of said gate, sub-
stantially as and for the purposes described, and as illustrated
in the drawings. (3.) The combination of parts constituting
the improved locking-bar, constructed and operating sub-
stantially as described with reference to the drawings.

(Specification, 3s. 6d. ; drawing, 1s.)