858
THE NEW ZEALAND GAZETTE.
[No. 35

tion with a vacuum-chamber of a constantly acting exhaust-
mechanism connected therewith, a cover for the chamber, a
can-support carried by the cover, a seaming-mechanism,
means for subjecting the can to the action of the seaming-
mechanism, and means independent of the movement of the
cover for relieving the vacuum in the chamber, substantially
as described. (10.) The combination with a vacuum-chamber
of an exhaust-mechanism connected therewith, a chuck
mounted in the chamber, means for rotating the chuck, a
seaming-tool co-operating therewith, a cover for the chamber,
and a can-support rotatably mounted in the cover, sub-
stantially as described. (11.) The combination with a
vacuum-chamber of a constantly acting exhaust-mechanism
connected therewith, a chuck mounted in the chamber,
means for rotating the chuck, a seaming-tool co-operating
therewith, a cover for the chamber, and a can-support
rotatably mounted in the cover, substantially as described.
(12.) The combination with a vacuum-chamber of a con-
stantly acting exhaust-mechanism connected therewith, a
chuck mounted in the chamber, means for rotating the
chuck, a seaming-tool co-operating therewith, a cover for
the chamber, a can-support rotatably mounted in the cover,
and means independent of the movement of the cover for
relieving the vacuum in the chamber, substantially as de-
scribed. (13.) The combination with a vacuum-chamber of
an exhaust-mechanism connected therewith, a chuck mounted
in the chamber, means for rotating the chuck, a seaming-
tool co-operating with the chuck, a cover for the chamber, a
can-support rotatably mounted in the cover, means for
moving the cover to close the vacuum-chamber, and means
for giving the can-support a movement independent of the
cover to bring the can against the chuck, substantially as
described. (14.) The combination with a vacuum-chamber
of a constantly acting exhaust-mechanism connected there-
with, a chuck mounted in the chamber, means for rotating
the chuck, a seaming-tool co-operating with the chuck, a
cover for the chamber, a can-support rotatably mounted in
the cover, means for moving the cover to close the vacuum-
chamber, and means for giving the can-support a movement
independent of the cover to bring the can against the chuck,
substantially as described. (15.) The combination with a
vacuum-chamber of a constantly acting mechanism con-
nected therewith, a chuck mounted in the chamber, means
for rotating the chuck, a seaming-tool co-operating with the
chuck, a cover for the chamber, a can-support rotatably
mounted in the cover, means for moving the cover to close
the vacuum-chamber, means for giving the can-support a
movement independent of the cover to bring the can against
the chuck, and means independent of the movement of the
cover for relieving the vacuum in the chamber, substantially
as described. (16.) The combination with a vacuum-chamber
of a chuck mounted therein, means for rotating the chuck,
a seaming-tool co-operating with the chuck, a cover for the
chamber, a plunger on which the cover is carried, a spring
interposed between the plunger and the cover, a rotating
can-support mounted in the cover, and means whereby the
plunger is caused to move the can-support, substantially as
described. (17.) The combination with a receiver of an
exhaust-mechanism connected therewith, a chuck mounted
in the receiver, a seaming-tool movably mounted in the
receiver, means for moving the seaming-tool so as to cause
the seaming-mechanism to act upon the can, a valve in the
receiver, and means whereby the seaming-tool is caused to
open the valve to relieve the vacuum in the receiver, sub-
stantially as described. (18.) The combination with a re-
ceiver of a constantly acting exhaust-mechanism connected
therewith, a chuck mounted in the receiver, a seaming-tool
movably mounted in the receiver, means for supporting a
can in the receiver, means for moving the seaming-tool so as
to cause the seaming-mechanism to act upon the can, a valve
in the receiver, and means whereby the seaming-tool is
caused to open the valve to relieve the vacuum in the
receiver, substantially as described. (19.) The combination
with a vacuum-chamber of a chuck mounted therein, a
movably mounted seaming-tool co-operating with the chuck,
a cover for the chamber, a can-support carried by the cover,
a relief-valve in the chamber, and means whereby the seam-
ing-tool operates the relief-valve, substantially as described.
(20.) The combination with a receiver of an exhaust-mechan-
ism connected therewith, a chuck mounted in the receiver, an
arm mounted in the receiver, a seaming-tool carried by the
arm, a lever for operating the arm, a relief-valve in the
receiver, and means whereby the arm opens the relief-valve,
substantially as described. (21.) The combination with a
receiver of an exhaust-mechanism connected therewith, a
chuck mounted in the receiver, an arm mounted in the
receiver, a seaming-tool carried by the arm, a lever for
operating the arm, a relief-valve in the receiver, means
whereby the arm opens the relief-valve, and stops for con-
trolling the movement of the lever, substantially as de-
scribed.

(Specification, 11s.; drawings, 1s.)

No. 13501.—26th March, 1901.—THOMAS COLE and WILLIAM
LAWES COLE, both of St. Ann’s Road, Burdett Road, Bow,
London, England. Improvements connected with apparatus
for producing cold air for refrigerating and like purposes.

Claims.—(1.) The improvements connected with apparatus
for producing cold air for refrigerating and like purposes
described and set forth, whereby the compressed cold
air is caused to travel between fins or ribs arranged around
the expansion-cylinder, and thereby be deprived of its
moisture and cooled so that it enters the expansion-cylinder
in a perfectly dry and cold condition, as set forth. (2.) In
connection with apparatus for producing cold air for re-
frigerating and like purposes, providing fins, ribs, or the like
between the outer side of the expansion-cylinder and its
jacket, and placing therein division-plates for directing the
travel of compressed air around the cylinder in the same or
different directions, substantially as set forth. (3.) In con-
nection with apparatus for producing cold air for refrigerating
and like purposes, the combination with a jacketed expan-
sion-cylinder, having fins, ribs, or the like for affording a
greater surface for the air to deposit its moisture and con-
ducting the air around the cylinder in the same or different
directions, of a base or bed having holed partitions therein
corresponding to the partitions around the expansion-
cylinder, whereby the compressed air is caused to travel
through such partitioned box or casing as well as around
the expansion-cylinder, the deposited moisture on the fins or
ribs trickling down into the box or casing, to be there passed
to outside through a water-seal and valve, substantially as
set forth. (4.) In connection with apparatus for producing
cold air for refrigerating and like purposes, the combination
with an expansion-cylinder B of jacket C enclosing fins or
ribs F, partitions H and G, the whole or portion of the pipe
or pipes D, bed or casing I, having sloping bottom O, valve
arrangement Q, holed partitions G¹, H¹ for causing the com-
pressed air to travel circuitously around the cylinder B and
deposit its moisture upon the fins and cylinder-walls in its
travel, so as to enter the expansion-cylinder in a dry, cold
manner, substantially as set forth. (5.) In an apparatus for
producing cold air for refrigerating purposes and the like, an
air-compressor, an air-cooling device in communication
therewith, a ribbed expansion-cylinder, a casing in com-
munication therewith, a jacket surrounding the expansion-
cylinder, partitions in said casing for causing the air to
travel circuitously around said expanion-cylinder within said
jacket and deposit its moisture upon said ribs, means in said
casing for collecting said moisture, a valve-mechanism for
admitting air to the expansion-cylinder, and connections
between the latter and a suitable reservoir. (6.) In an
apparatus for producing cold air for refrigerating purposes
and the like, an air-compressor, an air-cooling device in
communication therewith, a casing, a valve-mechanism for
admitting air to said casing, an expansion-cylinder, a jacket
surrounding same, a moisture-collecting means interposed
between said expansion-cylinder and said jacket, partitions
in said casing for causing the air to travel around said
expansion-cylinder and to deposit its moisture upon said
collecting-means, a sloping bottom in said casing for re-
ceiving said moisture from said means, a valve-mechanism
for admitting air to said expansion-cylinder, and a reservoir
in communication with said expansion-cylinder.

(Specification, 15s.; drawings, 7s.)

No. 13505.—28th March, 1901.—THE MINE AND SMELTER
SUPPLY COMPANY OF THE CITY OF DENVER, Arapahoe,
Colorado, United States of America, a corporation created by
authority of the laws of the State of Colorado, and doing
business at Nos. 1430 to 1438, Seventeenth Street, Denver,
Arapahoe, aforesaid (assignees of Lafayette Durkee, of 1203,
South Eleventh Street; Denver aforesaid, Mining Engineer).
A motor-operated rock-drilling engine.

Extract from Specification.—This invention relates to im-
provements in motor-operated rock-drilling engines, and the
objects of this invention are: (1.) To provide an electrical-
power-operated rock-drill. (2.) To provide a rock-drill provided
with a reciprocating drill-holder that is actuated by a crank-
lever which is operated by mechanism operatively connected
to and driven by a motor. (3.) To provide a rock-drill in which
the drill-holder is reciprocated by a two-armed lever, one
arm of which is connected to the drill-holder in each direc-
tion of its reciprocal movement by a resilient member that
directly actuates the drill-holder. (4.) To provide a rock-
drill that can be run at a very high speed without its own
actuating mechanism interfering with some of its own mem-
bers.

[The number and length of the claims in this case preclude them
from being printed, and the foregoing extract from the specifica-
tion is inserted instead.]

(Specification, £1 13s.; drawings, 3s.)