and a supplemental reversing-valve located in the conduit, as
set forth. (8.) An apparatus for propelling vessels by the
reactionary force of explosive gases upon a body of water, a
submerged conduit communicating intermediately with a
chamber wherein the gases are exploded and having branch-
passages in opposite directions, a reversible valve-device
interposed at the junction of the passages, operated to close
the passage from the conduit to the explosion-chamber and
also the inlet-branch of the conduit in either direction de-
sired, and to open the passage from the explosion-chamber
to the outlet-branch, as set forth. (9.) The combination with
an explosion-cylinder of a communicating submerged conduit
with inlet and outlet passages and an interposed and re-
versible valve-device that operates to open the communicat-
ing-passage between the cylinder and the outlet of the
conduit to expel the water, to close the communicating-
passage between the inlet and outlet branches of the conduit
during the action of the explosive and expulsion of the water
and gases, to close the passage between the cylinder and the
conduit, and to open the passage between the inlet and outlet
of the conduit to admit the water thereto at each interval of
explosive action in the cylinder, as set forth. (10.) An
apparatus for propelling vessels by means of the reactionary
force of explosive gases consisting essentially in an explosion-
cylinder having a reciprocating compressing-piston and a
submerged water-conduit communicating therewith, and
valve-devices for governing the respective inlets and outlets
of said cylinder and conduit, operated by an independent
source of power, as set forth. (11.) In an apparatus for
propelling vessels by an explosive force, an explosion-
chamber having a piston with an intermittent movement,
and a water-conduit communicating with said chamber that
is filled and exhausted during each cycle of movement of
said piston, fitted with a valve-device that is operated to
open for the inlet of the water to said conduit during the
greater part of said cycle of movement of the piston, and
closed during the remainder or lesser part, whereby the
entering water is given an extended period to fill the conduit
at each double stroke of the piston, as set forth.

(Specification, 12s.; drawings, £4 12s. 6d.)

No. 12025. — 28th September, 1899. — WRIGHT'S TAPER-
ROLLER BEARINGS SYNDICATE (LIMITED), of 1 and 2, Great
Winchester Street, London, England (assignees of William
Hamilton Wright, of Bridgeburg, Ontario, Canada, Manufac-
turer). Improvements in or relating to roller-bearings.

Claims.—(1.) In a roller-bearing, the combination with a
sleeve such as C, carrying two cones such as D, each cone
forming the inner wall of a roller-race, and a casing having
two taper surfaces such as A', each surface forming the
outer wall of the same, of two full series of taper rollers,
each series having a free way in its race, and the rollers
being in continuous line-contact with the walls of the race,
substantially as described. (2.) In a roller-bearing, a sleeve
such as C, which carries the roller-cones D, whereby the
bearing is rendered self-contained, and can be removed from
the shafting without disturbance of its parts. (3.) In a roller-
bearing, the combination with the shaft of a sleeve such as C,
which carries the various parts of the bearing, and is capable
of slight longitudinal movement along the shaft. (4.) A
roller-bearing comprising a sleeve C, adjustable cones D,
with bearing-surfaces D', lock-nuts F, feathered washers F',
a casing with taper surfaces A', and caps G', washers G, G',
two full series of rollers E, and retaining-devices E', E',
E', or H, H', H', substantially as described. (5.) In a roller-
bearing, the combination with one series of rollers adapted to
receive the axial load of another series of rollers adapted
to receive the end-thrust. (6.) The complete roller-bear-
ing substantially as described, or illustrated in Fig. 1 of
the drawings. (7.) The complete thrust-bearing substan-
tially as described, or illustrated in Fig. 2 of the draw-
ings. (8.) The complete car-journal box substantially as
described, or illustrated in Fig. 3 of the drawings.
(9.) In a roller-bearing for vehicles, the combination
with an adjustable cone such as D', forming one bear-
ing-surface of a roller-race, of a locking-device comprising
an adjustment-ring D', locking-ring D', both screwed
within the cone, and a feathered washer between D' and D',
substantially as described. (10.) In a roller-bearing for
vehicles, the combination with an adjustable cone such as
D', forming one bearing-surface of a roller-race, of a locking-
adjustment device D', D', D', screwed in one direction
within the cone, and a lock-nut D' screwed in the reverse
direction outside the same, and washer D', substantially as
described. (11.) In a wooden vehicle-hub having a rim-band
and a bearing-casing, covering the wooden surface exposed
between the band and the casing by a metal ring, substan-
tially as described. (12.) In a wooden vehicle-hub, the com-
bination with a bearing-casing inside the wood of a metal
ring such as A', having a flange such as A', threaded ex-
ternally to screw into the bearing-casing, and threaded inter-
nally to receive the end-cap, substantially as described.

(13.) In a roller-bearing, a cage such as H, H', H', substan-
tially as and for the purpose described, or as illustrated in
Figs. 10, 11, and 12 of the drawings. (14.) In a vehicle-
hub, the combination with a bearing-casing of an end-cap,
substantially as described, or illustrated in Figs. 6 or 7 of
the drawings. (15.) In a roller-bearing for vehicles, the com-
bination with a felt or similar split washer such as G' of a
spring such as G', for closing it, substantially as described.
(16.) In a roller-bearing for vehicles, the combination with a
series of tapered rollers and a casing forming the outer
bearing-surface of a roller-race of a sleeve such as K, sub-
stantially as described. (17.) In a roller-bearing for vehicles,
a sleeve such as K, which carries the various parts of the
bearing, whereby the bearing is rendered self-contained, and
can be removed from the axle without disturbance of its
parts. (18.) The complete vehicle-hub and axle-bearing sub-
stantially as described, or illustrated in Fig. 4 or in Fig. 9
of the drawings. (19.) In a thrust-bearing for a propeller-
shaft, the combination with a disc secured on the shaft, and
having an annular race bearing-surface on each face and two
adjustable discs secured in the casing, one face of each ad-
justable disc forming one of the outer bearing-surfaces of the
said races, of two series of tapered rollers, substantially as
described. (20.) A thrust-bearing having two series of
rollers to take the thrust, one in each direction. (21.) In a
thrust-bearing, the combination with two series of rollers
of a disc or collar rotating between them with the shaft.
(22.) In a thrust-bearing, the combination with two outer
adjustable races such as E', E', and two series of rollers
such as D', of a disc or collar such as C', secured upon the
shaft and rotating therewith between the two series of
rollers. (23.) A thrust-bearing for a propeller-shaft com-
prising a casing B', a central disc C' secured on the shaft,
two adjustable discs E', E', secured in the casing-washers
G', G', locking-rings F', F', and caps J, J', packing H',
two full series of tapered rollers D', and retaining-flanges
D', D', substantially as described. (24.) The complete
thrust-bearing substantially as described, or illustrated in
Figs. 13 and 14 or in Fig. 15 of the drawings. (25.) In a
stern-tube bearing for a propeller-shaft, the combination
with a series of tapered rollers of a sleeve secured on the
shaft, and forming one bearing-surface for the rollers, and an
adjustable casing forming the other bearing-surface, substan-
tially as described. (26.) In a stern-tube bearing for a pro-
peller-shaft, the combination with tapered rollers of a casing,
comprising a bearing-chamber and a packing-chamber, and
adjustable longitudinally relative to the rollers, substan-
tially as and for the purpose described. (27.) A stern-tube
bearing for a propeller-shaft comprising a sleeve secured on
the shaft, a full series of tapered rollers L, retaining-flanges
L', L', and a casing having a tapered bearing-surface K', a
packing-portion K', adjusting- and lock-nuts K', K', and end-
caps K', K', substantially as described. (28.) The complete
stern-tube bearing substantially as described, or illustrated
in Fig. 16 of the drawings.

(Specification, £1 2s.; drawings, £2 2s.)

No. 12033.—30th September, 1899.—HENRY MARK LEVINGE,
Medical Practitioner, and JESSIE LEVINGE, wife of Henry
Mark Levinge, of Halcombe, Rangitikei, New Zealand. An
invention for the making of ink, suitable for writing, from
the products obtained from the destructive distillation of
wood.

This product, obtained by the destructive distillation of
wood, is less volatile than the other products so obtained,
so that a second distillation evaporates off the other con-
stituents, leaving behind a greenish-yellow matter which,
exposed to the air or contact with certain chemicals, turns
intensely black. The ink may be made by evaporating
this difficultly volatile product to dryness, then adding suffi-
cient water to redissolve, and filtering, or, having evaporated
to dryness, adding sufficient water to redissolve, with a little
alkali, potash, or soda.

(Specification, 1s.)

No. 12044.—2nd October, 1899.—ROLAND PHILIP FINCHAM,
of Prospect Terrace, Mount Roskill, Auckland, New Zea-
land, Publisher's Agent. An improved knife-cleaner.

The cleaner is formed of a number of strips of wood so
arranged that, when joined together and doubled over in
the form of a book, the strips on one side will be at right
angles to those on the other side. Fibrous material is
secured inside the cover to form the cleaning-surface for
the knives.

Claims. — (1.) The combination and arrangement of the
materials as and for the purpose described, and illustrated in
the drawings. (2.) The use and arrangement of the fibrous
material for the purpose described. (3.) Specially the
arrangement of the woodwork or other suitable material,
such arrangement insuring complete flat contact of both
sides of the knife-blade at once with the cleaning material