1094

THE COLLIERY GUARDIAN.

November 22, 1918.

ABSTRACTS OF PATENT SPECIFICATIONS
RECENTLY ACCEPTED.

119723. Gas Producers. S. Glover, St. Annes, St.
Helens; J. West, Alton Lodge, Park Crescent, South-
port ; and West’s Gas Improvement Company Limited,
Miles Platting, Manchester.—This invention relates to gas
producers, and has for its object to provide improved
means for extracting ash from the producer furnace and
for ensuring a more uniform rate of gas production
throughout the furnace by providing for a uniform depth
or thickness of incandescent coke through which the air
or gases being acted upon pass, and for the withdrawal
of the producer gas at points distributed around the
furnace. The invention comprises the arrangement at the
lower end of the producer furnace of a revolving member
having an inwardly projecting spiral rib upon its interior,
which acts during the rotation of the member to draw
ashes down the furnace and discharge them from the lower
open end, beneath which is situated a plate or the like
to prevent self-discharge of the furnace. The invention
further comprises the provision at the upper end of the
ash extracting element aforesaid of an annular trough-
like part to form a water seal, and the arrangement, if
desired, of means for admitting steam or any other gas
or vapour to the furnace at about the said upper end
of the extractor. (Five claims.)

119835. Apparatus for Washing Coal— The Grange Iron
Company Limited and H. P. Doyle, both of Grange Iron
Works, Durham.—This invention relates to improvements
in or modifications of the apparatus for washing coal or
the like described in the specification of Patent No. 15827
of 1915. According to that specification the apparatus
consists of a reciprocating paddle or piston provided with
valves and combined with a fixed inclined mesh plate,
so that progressively reduced agitation is produced only
during the forward stroke of the paddle or piston, whereby
material, whilst being progressively agitated or separated,
is also carried steadily down the mesh plate. In working
the invention described in the earlier specification, it was
found that the motion-' of the door through which the
dirt passed was too violent, and to overcome this objection
dashpots are provided to cushion the motion of the doors.
Scrapers are also provided, reciprocating upon the mesh
plate to prevent the holes in the mesh plate from becoming
blocked, as well as a settling tank into which the water
flowing from the coal is led and separated from the slurry
which is carried over with it, and in this settling tank
are baffle plates having openings arranged out of line with
each other. (Three claims.)

. 119911. Retorts for Distilling, Carbonising and Roasting
Coal. A. Bradley, 46, Westbourne-terrace, Hyde Park,
London, W.—An objection to an endless chain or band
Conveyor in a continuously operating horizontal retort or
kiln for carbonising fuel or roasting ores is that it is practi-
cally essential that the idle length of the conveyor should
travel outside the retort or kiln, involving considerable
waste of heat. The substitution of a worm conveyor avoids
this waste, but introduces other troubles, namely, jamming
of the charge and increased production of dust. By
Causing the charge to travel successively through two or
more superimposed chambers set in the same furnace, it
has been arranged that there is no idle length of the chain
conveyor, but the output from such plants is small com-
pared with that from a single retort chamber of the same
capacity, and dust production is greater. Moreover, for
low temperature carbonisation, control of temperature in
the retort chamber is of paramount importance, but is very
difficult to attain when the charge passes through several
retorts set in the same furnace. This invention relates
to a continuously operating plant for low temperature
carbonisation or for roasting ores, in which an endless chain
or band conveyor travels in two adjacent separately heated
horizontal or slightly inclined retorts or kilns, each pro-
vided with a charging device for introduction of fresh
material. (Three claims.)

119954. Cutter Disc Machines for Use in Mining Coal.
Mavor and Coulson Limited, and M. S. Moore, 47, Broad-
street, Mile End, Glasgow.—Cutter disc machines for use
in mining coal and other minerals, hereinafter referred
to generally as cutter disc machines, have, in one type
of construction (Specification No. 18870 of 1912) been pro-
vided with a supporting frame upon which the cutter disc
is mounted, comprising an upper bearing ring and a
lower bearing ring, with an inner cylindrical bearing and
an outer cylindrical bearing intervening between the
rings, integral with the supporting frame and the cutter
disc, for use in conjunction with the frame, has comprised
associated parts having bearing surfaces complementary to
the bearings of the frame. Machines of this type are
used considerably in mining under conditions where the
head room is so restricted that dismantling operations
involving raising or inclining the supporting frame are
impracticable or inconvenient. Dismantling operations, for
instance, are required in order to fit new bearing bushes
to the parts. This invention, which relates to cutter
disc machines of the type described above, refers to con-
structional improvements and to the provision of a support-
ing frame and cutter disc having bearing bushes of which
the bushes, are capable of being removed and renewed with-
out necessitating raising or inclining the supporting frame
or disturbing the position of the cutter disc relative to
the supporting frame. Provision is made whereby access
may be obtained through an aperture in the supporting
frame to the central portion of the disc beneath, within
the region extending to the upper ring and outer cylindrical
bearing parts, so that a bushing fitted about these parts
in the cutter disc may be withdrawn through the aperture,
and whereby the other parts to complete the bearing
support for the cutter disc are adapted to be placed in
position and secured from the upper side of the supporting
frame. (Five claims.)

119969. Manufacture of Tin Plates. H. S. Thomas,
“ Hazelwood,” Cardiff-road, Llandaff, and W. R. Davies,
“ Forest-Lyn,” Church-road, Whitchurch.—This invention
consists of improvements on the invention described in
Specification No. 6080 of 1915, the principal objects being
to obtain a more elastic pressure of the wipers of the
grease pot rolls of tinning machines than is provided by
the prior patented arrangement referred to, whereby a
more efficient removal of the tin from the rolls results
with considerably less wear on the brushes. According to
the present invention, the hinged brush or wiper support-
ing arms are connected by means of connecting rods with
the short arms of levers situated above the grease pot, the
long arms of the levers having in them slots through which
project stationary rods having on them coiled springs or
weights which bear on the upper sides of the long arms
of the levers and ensure the proper pressure on the brushes
or wipers. The rods are or may be screwed at their
upper ends for the reception of screw nuts by which the
compression of the springs can be adjusted from time to
time. The connecting rods have preferably a hooked shape

to facilitate their connection with the short arms of the
levers. Where weights are employed on the long arms of
the levers they may be suspended therefrom. (Four
claims.)

120011. Process of Burning Solid Fuel. F. Thuman,
38, Victoria-street, Westminster (a communication from
Owen Brooke Evans, Lansdowne, Delaware, Pennsylvania).
—The present invention is applicable not only to the fur-
naces of gas producers in which combustion is incomplete
and from which gas generated is led away, but also to
other furnaces in which combustion is complete. The prin-
cipal object of the present invention is to prevent the
adherence of clinker to the side wall of the furnace, and
thereby permit of the easy cleaning of the fire. In one
way of practising the invention, a burning fuel bed is fed
through a furnace and superposed regions where ash would
and would not fuse are created and maintained in the
burning fuel bed by appropriate blast control, including, if
desired, the use of cooling agents. In passing from one
of these regions to the other, clinker goes through a tem-
perature zone of solidification, and, if unconsumed fuel or
carbon goes through this zone in admixture or association
with the clinker, it prevents the latter from solidifying or
agglutinating into large masses, but it does not prevent the
clinker in solidifying from adhering to the furnace walls.
To prevent the solidifying clinker from adhering to the
side wall of the furnace, in accordance with the invention,
space is provided and maintained between the lateral sur-
face of the fuel bed and the surface of the furnace side
wall in the vicinity of the temperature zone of solidifica-
tion, and Xhis is done by separating the surfaces of the
furnace wall and of the fuel bed at the temperature zone
of clinker solidification, thus providing against contact
between the surface walls and the lateral surface of the
fuel bed, and by appropriately controlling the blast and
its application to the fuel bed in order to maintain the
temperature zone of clinker solidification at the place
where such separation occurs. Thereafter the carbon or
unconsumed fuel which was carried along with the admix-
ture entering the zone or region where the clinker solidifies,
may be burned out, thus leaving the clinker in such divided
condition that it can be readily removed to clean the fire.
Broadly speaking, the invention consists in preventing the
adherence of clinker to the walls of the furnace by pro-
viding and maintaining space between the surface of the
furnace side wall and the surface of the fuel bed in the
neighbourhood of the temperature zone of solidification of
clinker, by passing the solidifying clinker out of contact
with the' furnace side wall, and the invention also consists
in controlling the location of this temperature zone by
appropriate blast control and application, the blast being
applied either by suction or pressure.

120025. Rotary Pumps. D. James, 14, Percy-road,
Cynonville, Pontrhydyfen, Port Talbot.—This invention
relates to improvements in rotary pumps of the type in
which radial blades are arranged to slide radially within a
rotating drum eccentrically mounted in a casing. In carry-
ing out the invention a cylindrical casing is cast integrally
with a base plate, the casing being provided with flanged
ends to which the closing covers or disc plates are secured
by bolts. The bush carriers and glands are arranged
eccentrically upon the closing or disc covers, and are prefer-
ably cast therewith, but the bearings are preferably
arranged exterior to the glands. The shaft therefore is
arranged eccentrically with relation to the axial centre line
of the casing but parallel therewith. Ports are provided
on each side of the casing, the one for inlet and the other
for outlet. The ports may be of the same area, so that
when the direction of the pump is changed and turned in
the opposite direction, the movement of the fluid or liquid
is reversed, the inlet will become the outlet port, and
the outlet port the inlet port. Instead of forming the
ports in the cylindrical casing wall, they are formed
of crescentic or like shape in the walls of the disc closing
covers, and the two ports are connected to one conduit,
preferably formed in the cylindrical casing wall. A metal
drum is keyed upon the shaft of such diameter that it
touches, or nearly so, the interior surface of the cylindrical
casing at one point or line. Slots are provided in the
drum, and fit blades or impellers constructed in each slot
adapted to slide radially therein. At each end of the said
drum a cylindrical recess is made concentrically adjacent to
the cover or bearing plate, so that in sliding inwardly in
succession, each blade slides into such recess. Within the
recess are fitted metallic rings conveniently of brass of
the same thickness as the axial depth of the recess, the
outer diameter of the rings being such that they are always
in contact with the inner ends of the radial blades and
always therefore keep the outer edge or end of the blade
in contact with the inner surface of the cylindrical casing.
The said rings have a double movement therefore—by the
one movement they are carried round by their contact with
the inner edge of the blades, and they have also an eccen-
tric movement relatively to the shaft. Suitable packing is
provided. The base plate is preferably cast not as usually
with the cylindrical casing, but with projecting portions
and holding down bolts arranged with each cover plate, the
end of each such projection serving to carry an outside
standard and bearing for the pump shaft. The blade or
impeller is formed of a plurality of plates, and some of
such plates, preferably the outside plates, are made in
two portions, each outside plate being divided diagonally
from the outer corner to the opposite inner corner. The
opposed plates of each blade are divided in such manner
that the diagonal divisions cross each other. This arrange-
ment enables the two portions of the plate to slide laterally
on their diagonal edges to a very slight degree, in order
that the ends of each such plate may be pressed upon the
inner surface of the covers of the cylindrical casing, the
better to prevent leakage of the liquid in the pump. Near
the exterior or peripheral edge of each side of the drum a
circular groove is formed extending between each slot, and
within the groove are fitted segments of packing rings
adapted to be pressed outwardly or laterally upon the
cover plate to prevent leakage of liquid by the drum. Each
groove holding the segment of metallic packing ring is of
such depth that a segment of rubber of corresponding form
is fitted in front of the metal ring segment. On each
side of each slot adjacent the flat formed upon the drum
periphery to accommodate the leather packing, a hole iff
drilled communicating with a laterally formed channel, in
which is fitted at the ends a rubber plug engaging the
segment of metallic ring before mentioned. In this manner
the pressure of the water or other liquid being pumped is
transmitted through the holes drilled in the periphery of
the pump to the lateral channels, and the liquid or water
by pressing outwardly the rubber plugs transmits the fluid
pressure to the metallic segments, and therefore to the
rubber segmental packing. A coiled spring may be fitted
between the two rubber or metal plugs in the said lateral
channel in order to press the rubber or metal plugs out-
wardly, and thus to press the rubber segmental rings upon
the faces of the covers. As the rubber segmental rings by
friction with the cover may tend to be moved endwise in

their grooves by the rotation of the drum, a groove may
be formed on. one side of each slot provided with rubber
and metal packing, which packing is pressed upon the face
of the sliding blade by such endwise movement of the
segmental rings. The said groove may extend across the
inner face of the slots on one or on both sides and be pro-
vided with metallic and rubber packing strips engaging
the face or faces pf the blades. (Seven claims.)

NEW PATENTS CONNECTED WITH THE
COAL AND IRON TRADES.

Applications for Patents.

November 11 to 16 (inclusive.)

[Note.1-Applications arranged alphabetically under the
names of the applicants (communicators in parentheses).
A new number will be given on acceptance, which will
replace the application number.]

Akt.-Ges. Brown, Boveri, et Cie. Process for removing
water of condensation from condensers. (18768)

Atkins, H., and Colquhoun, J. A. Crude oil burners for
firing brick kilns, furnaces, etc. (18845)

Bisacre, F. F. P. Steam boilers, etc. (18627)

Boulton, P. R. Steam power generating plant. (18520)

Bowen, R. Apparatus for production of artificial fuel.

(18432)

British Thomson-Houston Company. Dynamo-electric
machines. (18754)

British Westinghouse Electric and Manufacturing Com-
pany and Miller, L. Electric motor control systems.
(18559)

British Westinghouse Electrical and Manufacturing Com-
pany. Dynamo-electric machines. (18585)

Clement R. Balanced impeller for centrifugal pumps, fans
and blowers. (18833)

Clifford, I. Gravity motors. (18623)

Cornish, A. H. Internal combustion engines. (18604)

Crochat, H. Internal combustion engines. (18682)

Dickinson, J. R. Furnace fire grates of steam boilers, etc.
(18429)

Dobson, D. R. Gas producers. (18430)

Drake, W. A., and Drakes Limited. Regenerative fur-
naces. (18405)

(Enrick, B. R., and Porter, J. K.) Deep well pumps.
(18840)

Falvet, F. E. Manufacture of iron or steel or their alloys.

(18519)

Fox, H. S. Furnace. (18717)

Harvey, L. C. Feeders for pulverised fuel. (18839)

Kirke, P. St. G. Gas fired furnaces. (18718)

Manfred, H. C. Internal combustion engines. (18697)
Martin, C. H. Furnace. (18717)

Massey, T. H. Rotary compressors or pumps. (18470)
Petters Limited. Internal combustion engines. (18604)
Pickard, W. Gas producers. (18430)

Renshaw, W. R. Utilising waste gases of furnaces, kilns,
and ovens. (18654)

Robey, E. W., and Wood, W. R. Apparatus for removal
of ash clinkers, etc., from furnaces. (18530)

Schneebeli, H. Two-stroke cycle internal combustion
engines. (18545)

Shuttleworth, J. M. System of handling peat. (18599)

Stansfield, J. W. Providing blast or draught for furnaces,
etc. (18411)

Tilston, E. Internal combustion engines. (8448)

Walker, H. G. Controllers for electric motors. (18454)
Whitaker, F. P. Dynamo-electric machines. (18754)
Windle, A. E. Combined atomisers and burners for
liquid fuels. (18726)

Complete Specifications Accepted.

(To be published on December 5.)

[Note.—The number following the application is that
which the specification will finally bear.]

1917.

3213. Frame, W. J. Multi-stage centrifugal fans and
pumps. (120401)

16119. Parsons, Sir C. A., Cook, S. S.-, and Douglas, L. M.
Geared turbine installations. (120419)

16195. Walker, J. H. Lifting or hauling gear. (120422)
16380. King, F. Brown-. Apparatus and means for drain-
ing mines. (120437)

16507. Baur, C. H. vom. Electric furnace. (120444)

17103. Glover, S., West, J., and Wild, W. Retorts for
the continuous carbonisation of coal and the
like. (120458)

17580. Alley, S. E. Tappet valve-steam engines. (120466)
17893. Marsh, G. Manufacture of refractory substances,
artificial slate and the like. (120471)

19216. Boulton and Paul, and North, J. D. Internal
combustion engines. (120480)

1918.

1323. Babcock and Wilcox (Babcock and Wilcox Com-
pany). Oil burning apparatus. (120489)

2164. Kelso, J. C. Controllers for electric motors.
(120495)

3161. Wragg, W. Doors for furnaces and the like.
(120502)

4270. Marten, T. H. Automatic braking apparatus for
lowering appliances. (120508)

4520. Ingall, C. H. Internal combustion engines.
(120510)

8285. Batchelor, H. Furnaces. (120522)

9486. Horiuchi, H. Water tube boilers. (120527)

9534. Trefileries and Laminoirs du Havre, Anciens Etab-
lissements L. Weiller, Soc. Co-operative de •
Rugles et la Canalisation Electrique Reunis, and
Roudy, C. Furnaces. (120031)

11983. Rayner, G. H. T. Valve apparatus for rock drills
and the like fluid pressure operated tools.
(120533)

Complete Specifications open to Public Inspection Before
Acceptance.

[Note.—The number following the application is that
which the specification will finally bear.]

1918.

16547. Barbet et Fils et Cie, E. Process for removing
the tar from pyroligneous liquids. (120558)

16518. Aubert, A. M. Regenerative tipping furnaces.
(120559)

16599. Barbet et Fils et Cie, E. Process and apparatus
for the treatment of pyroligneous liquids
derived from the carbonisation of wood.
(120560) -

17693. Smith, C. H. Briquets, and method of making
same. (120585)