780

THE COLLIERY GUARDIAN.

April 20, 1917.

COHTRACTS OPEH FOR COAL AMD COKE.

For Contracts Advertised in this issue received too late
for inclusion in this column, see Leader and Last
White pages.

Manchester., May 2.—The Electricity Committee of the
Manchester Corporation invite tenders for the supply of
their requirements of washed and dry coal during 12
months ending June 30, 1918.. Forms of tender may be
obtained on application to Mr. F. E. Hughes, secretary,
Electricity Department, Town Hall, Manchester. Tenders,
duly endorsed and addressed to the chairman of the Elec-
tricity Committee, Town Hall, Manchester, must be sent
in not later than May 2.

Abstracts of Contracts Open.

Bridge of Allan, April 28,—Screened and unscreened
treble, double, and single nuts (2,200 tons or less) for the
Gas Department. Forms from the manager, Gas Works,
Bridge of Allan, Scotland.

Bucknall (Stoke-on-Trent), April 28.—Coal and slack
for the Joint Hospital Board. Forms from E. B.
Sharpley, clerk, Town Flail, Hanley.

Bury (Lancashire), April 24. — Coal and coke (six
months) for the Joint Hospital Board. Forms from F.
Wild, clerk, Cross-street, Bury.

Cardigan, April 26.—20 tons culm for the Cardigan
Guardians. Tenders to D. Davies, clerk, Workhouse, St.
Dogmaels.

Edinburgh, April 30.—Gas coal (12 months) yielding
satisfactory quality of .coke, for the Gas Commissioners.
Forms from the engineer, 15, Calton-hill, Edinburgh.

Framlingham (Suffolk), April 27.—Coal for Framling-
ham College. Forms from the secretary.

Hoylake (Cheshire), April 28.—Best Arley cobbles,
free from slack, blasting powder, and other explosives, for
the Urban District Council. Forms from the engineer,
Town Hall, Hoylake.

Kirkcaldy, April 24.—Household coal (free from dross),
treble nuts, steam coal, and chirls for boiler, for the Joint
Hospital, near Thornton. Forms from D. Berridge, soli-
citor, Kirkcaldy.

Manchester, April 23.—Coal for the Guardians. Forms
from the Union Offices, All Saints, Manchester.

Maud (Aberdeen), April 24.—Coal (12 months) for the
Poorhouse. Forms from Mr. J. Niven, governor, Maud.

Richmond (Surrey), May 8.—Steam coal and house coal
for the Main Sewerage Board. Forms, from the engineer
to the Board, West Hall-road, Kew Gardens.

Spalding, April 28. — Gas nuts (not exceeding 6,000
tons) for the Urban District Council. Forms from the
engineer, Gas Works, Spalding.

Stratford-upon-Avon, April 24. — Gas coal or nuts
(about 6,000 tons) for Gas Committee. Forms from the
engineer, Gas Works.

The date given is the latest upon which tenders can be
received.

CONTRACTS OPEN FOR ENGINEERING, IRON
AND STEEL WORK, &c.

London, W., April 25.—Mechanical Stokers, etc.—
Mechanical stokers, induced fan draughts, boiler feed
pumps, centrifugal pumps, etc., for the Hammersmith
Borough Council. Forms from the engineer, Electricity
Department, 85, Fulham Palace-road.

x Manchester, April 24. — Wire. — Hand-drawn trolley
wire for the Tramways Committee. Forms from the
general manager, Tramways Office, 55, Piccadilly, Man-
chester.

OBITUARY.

Mr. Ebenezer- Morgan, formerly manager of Messrs.
Insoles Cwmmer Collieries, died a few days ago at an
advanced age. He was at one time engaged at Nixon’s
Collieries, Mountain Ash, and afterwards was manager at
Penrikyber.

The death is announced of Mr. C. F. Gooch, who at one
time resided in Cardiff and practised in South Wales as a
mining engineer. At one time he had charge of collieries
which were then owned by the Great Western Railway
Company. He was a son of the late Sir Daniel Gooch,
formerly chairman of the railway company.

Mr. Thomas T. Ferguson, iron merchant, aged 49, died at
his residence in Middlesbrough on April 14. He was widely
known and highly esteemed in Teesside commercial circles.

Mr. John T. Johnson, for many years under-manager of
East Holywell Colliery, died, after a long illness, at the age
of 70 years.

Mr. Reuben Isles, coal merchant, Richardshaw-lane,
Stanningley, died suddenly in the Great Northern Coal
Yard when speaking to somebody. He was 58 years of age.

Dr. Arthur Robert Steel, who has been drowned in the
Channel, was colliery doctor for Thornley and Wheatley
Hill Collieries prior to the death of his wife some six
months ago, after which he left Thornley to undertake a
voyage to Africa.

A Cannel Coal Claim.—In the City of London Court on
April 17, before his Honour Judge Rentoul, Messrs.
Cleeves and Company, coal merchants, 120, Fenchurch-
street, E.C., sued F. Hawkyard, Gas Works, Upwell, near
Wisbech, Cambridge, for J227 for Nottingham cannel coal
supplied. Defendant said that the coal supplied was not
Nottingham cannel coal, but shale. He had the coal for
gas making, but it was poor in quality, and the smell was
so abominable that the consumers threatened to discon-
tinue the use of it. One said he could not live in the house
where it was being burned. Some of the coal caught fire
through spontaneous combustion. Mr. Finch, plaintiffs’
solicitor, said that the same coal was supplied with satis-
faction to the Gas Light and Coke Company, the Tilbury
Gas Company, the Southend Gas Company, the Hastings
and St. Leonards Gas Company, the Malden Gas Com-
pany, the High Wycombe Gas Company, and the Mine-
head Gas Company. There were large contracts with each
of them. The case was adjourned for defendant to obtain
legal aid, and to raise a counter-claim for damages for
alleged misrepresentation,

ABSTRACTS OF PATENT SPECIFICATIONS
RECENTLY ACCEPTED.

100158. Process and Apparatus for Introducing and
Mixing the Binding Medium in Making Briquettes of Coal,
Coke, Peat, Ores, and the like. E. Kleinschmidt, 7,
Hynspergstrasse, Frankfort-on-Main, Germany. — This
invention relates to a process for the manufacture of
briquettes of coal, coke, peat, ores, or the like, of the kind
in which the briquette material is mixed with a binding
medium introduced in the form of a very fine spray or
mist, as, for example, in British Patent No. 17519/13. It
is desirable to employ small quantities of binding medium,
and therefore the separate particles of the briquette
material must be coated as uniformly and as thoroughly
as possible. It .is the object of the present invention to
achieve this result as effectively as possible. The inven-
tion therefore consists in attacking this particular pro-
’ blem, namely, the admixture of briquette material with
binding medium in the form of fine spray or mist by bring-
ing about a certain relative motion between the briquette
material and the particles of binding medium as follow :
The briquette material is as finely comminuted- particles
as possible is caused to fall like rain, and the particles of
binding medium are caused to move substantially at right
angles to the falling particles of briquette material. This
invention relates to a special type of material, namely,
material, especially fuel, which is to be formed into
briquettes by the action of a binding medium. ^r~ -
ways of carrying out the process are described.

caused to move substantially at right

the storage vessel /, for
a wind separator d, for

Various
In the
form of construction shown in fig. 1, the briquette,
material, i.e., the coal, coke, ore, or the like, is first
charged into hoppers a1, which are so formed or moved,
for example, like a rocking sieve, that the briquette
material escapes therefrom in approximately uniform quan-
tities, and falls down like
rain. The briquetting
material is then accumu-
lated in hoppers b1, and
may, when sufficiently
coated with the binding
medium, be conveyed
directly to the briquette
press. It is, however, pre-
ferable for the briquetting
material to be again ele-
vated by means of a bucket
conveyor c1 or the like, and
subjected again to a simi-
lar treatment in the hop-
pers a2, b2, a3, b3. The
binding medium passes into
example, at the point e, from
example, as fine pitch dust, and is then conveyed in suit-
able quantities by means of a distributing disc h to the
blast nozzle. Now, the essential feature of the invention
consists in the binding medium being conveyed, for
example, by means of an air or steam jet, approximately
at right angles through the briquette material which is
falling down like rain, as hereinbefore described, whereby
as is evident without further explanation, the binding
medium can coat as completely as possible each separate
particle of the briquette material, as the separate particles
of the briquette material cannot rub one against the other,
but are simply superimposed in the lower hoppers, b1, b2,
b3. The process and apparatus hereinbefore described are
applicable for any suitable binding medium, and the dis-
integration of the binding medium may be done, as was
mentioned at the commencement, either by mechanical
means or in any other suitable way. It may also be men-
tioned that when liquid binding medium is blown in by
means of a nozzle, a sprayer, or the like, the meeting of
the briquette material and the binding medium may take
place directly after the nozzle, so that the separate par-
ticles of the binding medium adhere in a finely distributed
liquid form to the particles of the briquette material. Of
course, the injection may, however, take place in such a
way that the separate particles of the binding medium first
harden into a dry dust, and then only come in contact
with the briquette material descending like rain. (Seven
claims.)

104522. Improvements in Reversing Motions. F. F.
Larivei, Victoria Works, Canal-road, Bradford.—The pre-
sent invention relates to improvements in reversing
motions, more particularly applicable to scouring dyeing
machines and the like, such as described in prior Patent
Specifications Nos. 26073/13 and 19433/11, but which are
also applicable to other purposes, the object being to pro-
vide a reversing motion which can by a simple adjustment
be thrown out of gear to permit the machine to continue
to rotate in one direction. The reversing motion is at the
same time so arranged that by a further simple adjust-
ment, the periods of the reversals or the length of time
which the machine runs in one direction or the other can
be easily adjusted. The reversing motion is of the type
in which a tumbler is moved
by suitable stops in the running
of the machine from one posi-
tion to another, and in being
moved throws one or other of
two clutches or the like con-
nected to a system of three
bevel
bring about the desired re-
versal. r'^
tional view of the device.

order to adjust the frequency
of the reversals, the two stops 1 and 2 are mounted, one of
them directly on the shaft 3 above referred to, while the
other is mounted on a sleeve 18 on the said shaft 3, both
this shaft 3 and the sleeve 18 being brought sufficiently to
the side of the apparatus to be accessible while the shaft
projects somewhat beyond the sleeve. The more the
angular adjustment separates the two stops 1 and 2, the
shorter will be the period of the reversals, that is to say,
if the stops be adjusted so as to lie at 90 degs., the one to
the other, the reversals will only take place for every
three-quarter turn on the shaft 3, upon which they are
mounted. On the other hand, if the stops be so adjusted
as to be coincident, then the reversals will only take place
after the completion of practically a whole revolution of
the shaft. (Three claims.)

101407.	7

Machinery.; Siemens-Schuckertwerke G.m.b.H., Siemens-
stadt, near Berlin.—This invention has reference to haul-
ing or winding machinery, and relates more particularly

wheels into action to

The figure is a sec-

' "	‘ . In

Improvements in H aiding t dr Winding

to systems in which indicators or safety devices are
operated from the rope pulleys, and in which two cages or
a cage and counterweight move oppositely.. In such
hauling or winding systems it is possible that in the event
of the rope stretching or slipping, difficulties may arise
owing to the safety and indicating devices which are
driven by the pulley being put out of step or adjustment
as it were, and so not acting properly. The man in charge
of the machinery is thus no longer in a position to keep
the cage in the prescribed place, and there is a danger that
if there is a series stretching or slipping of the rope, the
cage may be overwound and strike against the pulleys.
The present invention is designed to overcome this diffi-
culty, and to enable the man in charge to detect the con-
dition of the rope, or differences in its condition as regards
stretching or slipping, so that he can control the system
accordingly. Moreover, the invention can be arranged to
bring about the application of the safety brake in the case
of serious stretching or slipping of the rope. . According
to the invention, an indicator or relay circuit is provided,
comprising two variable resistances or rheostats, the mov-
able contacts or brushes of which are actuated, one by the

driving pulley, and one by a sheave or idle pulley over
which "the rope passes. The driving pulley and the idle
pulley or sheave so act on the brushes that under normal
conditions the resistance in the circuit does not vary. If,

the contact brush of the

Fty.d

Tty 2.

however, the rope should slip,
one regulating resistance is
displaced, or put out of step
relatively to that of the
other, thus causing a varia-
tion of resistance in the cir-
cuit which affects the current
operated device. This latter
may be an ordinary galvano-
meter instrument, such as an
ammeter or voltmeter, or it
may be a relay which either
directly or indirectly causes
the release of aii audible or
visual signal or of the safety
brake. Fig. 1 shows an ar-
rangement in which the con-
tact brushes are actuated
through worm gears, and the
resistance which is controlled
by the idle pulley can move
bodily round its centre or axis.

Fig. 2 illustrates an arrange-

ment in which a stationary resistance is used, having its
brush actuated from both idle pulleys through a differen-
tial gear. The apparatus shown in fig. 1 measures stretch
and slip in the leg A of the rope, it being sufficient for
most practical purposes to assume that the stretch or slip
in the leg B will be the same, the weights or loads under
normal conditions being approximately equal in the alter-
nate movements. In the example shown in fig. 2, the con-
tact brush of the regulating resistance w is actuated, not
by the movement of a single sheave only, but by the move-
ments of both sheaves s. In this case, a differential gear
box d has its opposite wheels connected with the two
sheaves, one through a reversing gear d1. The inter-
mediate or planet wheel acts through a toothed ring d2 on
the adjusting devices of the contact brush w. As the
movements imparted to the contact brush are equal (but
opposite) no matter which leg of the rope is loaded, the
limits of travel of the said contact brush relatively to the
regulating resistance w remain in the same position, and
hence the resistance does not need to rotate, as in fig. 1.
(Eight claims.)

104407. Improvements in and Relating to Controlling
Mechanism for Electric Motors Operating Cranes, Lifts,
and the like. The British Thomson-Houston Company
Limited, 83, Cannon-street, London, E.C. ; and W. L.
Wise, 28, Paradise-street, Rugby.—This invention relates
to. controlling mechanism for use in connection with elec-
trically operated travelling cranes, lifts, or the like
devices. With such devices it has been common practice
to arrange limiting devices, so that the motor circuit is
opened when the crane or other device reaches points of
its travel. These limiting devices had the disadvantage,
however, that it was within the power of the operator to
close the circuit of the motor after it had been opened by
the device while the motor was connected for running at
full speed, that is, with all the starting resistance short-
circuited. To overcome this defect, it was proposed (see,
for example. Patent No. 11926/07) to so interlock the
tripping device with the controller that it was only possible
to re-connect the motor in circuit, after the circuit had
been opened by the tripping device, by moving the con-
troller back to its first position, so that all the starting
resistance was connected in series with the motor. This

e-\

arrangement necessitates the addition of contacts to the.
controller, and in many cases the additional length of con-
troller drum required may be a serious disadvantage. It
was also proposed in Patent No. 17536/08 to provide an
electro-magnet device for
closing the motor circuit
after the limit switch had
been operated. The object
of this invention is to pro-
vide an improved controller
of the above type, in which
the above disadvantages are
overcome. Various alter-
native arrangements are de-
scribed. In the arrange-
ment shown in fig. 1 left
with the complete specifi-
cation, a single relay coil is
used, the operating coil of
which is marked r1, and the
contact f1, in combination
with a limit switch having
a movable contact arm and
two fixed contacts, lettered
c and d respectively. These

contacts are normally open, whereas in the schemes previ-
ously described they are normally closed. It will be seen
that when the controller is in the “ forward ” running
position, and the limit switch is knocked to the position
where the switch arm would make contact on d, the relay
coil will receive approximately full line potential, and
will open the contacts f1, thus opening the contactor oper-
ating coil e. If the controller is moved to the “ reverse ”
position while the limit switch is still closed on contact d,