134

THE COLLIERY GUARDIAN.

July 21, 1916.

engaged by the cotter while the drill is being removed, and
when it is required to remove the bushing packing may be
introduced through the cotter hole to bear on the end of the
bushing and enable the driving pressure of the cotter to be
applied to the bushing. The extreme inner end of the drill
shank 5 >and of the bushing 4 are reduced slightly that a
slight upsetting of the end will not 'affect the bearing fit of
the cones, <and similarly the outer end of the bushing is
rounded, as at 11. The tapered bushing prevents the dis-
placement of the bushing when removing the drill, and not
only enables the socket to be renewed when worn, without
discarding the piston rod, but such renewal will not be so
frequent, as a higher carbon steel may be used for the bushing
than it is advisable to use for the piston rod. (Two claims.)

11451 (1915). Improvements in Colliery and like Winding
Drums or Rollers. W. V. Dewhurst, of 261, Gleadless-road,
Heeley, Sheffield.—Relates to colliery and like winding
drums or rollers, particularly for winding rollers used for
hauling corves in mines. A single rope is employed upon the
drum, and the winding drum is provided with a right and
left handed groove upon its periphery in which the winding
rope travels. A helical groove or grooves extend in one
direction from one end of the barrel portion of the drum to
the other, and a helical groove or grooves also extend in a
reverse direction throughout the length of the barrel, thus
forming a combined right hand and a left hand single,
double, or multiple thread across the barrel of the drum or
roller. Fig. 1 is a front elevation, and fig. 2 a transverse
section of fig. 1 on the line AB. A shaft a has securely

mounted thereon the drum b, which has helical cut or cast
grooves c and d formed in its periphery and running in
opposite directions. Two U section grooves only are shown,
but they may be either single, double, or multiple so long as
the numbers in both directions are the same, and the grooves
may be of V or any other desired section. Such a drum
causes the rope to travel across the whole surface of the
barrel and then back again, thus providing a very wide
wearing surface which very considerably lengthens the life
of the drum. It may also be made considerably lighter'♦han
heretofore, which materially reduces its cost. (Three claims.)

16748 (1915). Improved Means for Utilising Methane or
Marsh Gas given off from Mine Workings and like Places.
E. Moxon, of 119, Parson Cross-road, Wadsley Bridge,
Sheffield.—Relates to means for drawing off and utilising
the methane or marsh gas, given off from mine workings and
like places, for lighting and power purposes. Fig. 1 shows a
general arrangement of the invention in connection with
an upcast shaft of a mine, and fig. 2 is a plan section on the
line A B (fig. 1). The means for drawing off the methane
from the exhausted air are arranged near the upper end of
an upcast air shaft a of a mine (fig. 1). A downwardly
depending baffle b is provided at the point where the drift
enters the upcast a, thus restricting the opening b1. Beyond
this baffle b the drift opens out into a settling chamber c, of
relatively much greater height than the said opening. At
the end of this chamber c the portion d of the drift gradually
tapers toward the fan, the entrance d1 of the drift being pre-
ferably of rectangular form and having an area equal to the
area of the inlet of the fan e, situate at the outlet of the
drift. On top of the settling chamber c is formed a gas

chamber f, which may have any suitable form of baffled
entrance f1, connecting it with the chamber c below, and
leads in turn to a gas main g, to which may be connected
one or more branches gl, g2, leading to gas reservoirs h,
preferably of the bell-shaped water-sealed type. The bad
air and gas from the upcast shaft a psases through the
restricted orifice bl, leading into the settling chamber c, at a
high velocity, when it expands, and the methane rises to the
upper part of the chamber while the air occupies the lower
portion. As the fan drift d which leads off from this
chamber is approximately on a level with the floor, the . air is
drawn away by the fan e, while the methane occupying the
upper portion of the chamber c, above the baffled air, con-
tinues to rise and passes into the superimposed ga>s chamber
/, and so into the gas main g, and the gas reservoirs h, from
whence it may be drawn off through pipes h1, as required.
Valves and cocks i are provided at suitable positions on .the
gas main and the outlets therefrom and on the service pipes
h1, for regulating and shutting off the gas supply as may be
required, non-return valves /, are also provided where
necessary. (Two claims.)

University of Sheffield.—The matriculation examination
for the Degree in Mining will be held on September 12.
Applications for information should be sent to the registrar
before August 26. The mining diploma (day) course com-
mences on October 4. The certificate (Saturday afternoon)
course commences on September 23; and the mining teachers’
course on September 30. The courses in electricity applied to
mining commence on September 23. Particulars relating to
these courses can be obtained from the registrar.

NEW PATENTS CONNECTED WITH THE
COAL AND IRON TRADES.

Applications for Patents.

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

Andersen, 0. L. K. (9815). Production of means for pre-
venting fur depositing in boilers, etc.

Babcock and Wilcox (9867). Superheater boilers.

Bailey, A. J. and F. M. (9915). Fluid pressure reducing
valves.

Bailey, A. J. and F. M. (9916). Fluid pressure gauges.

Bradburn, W. H., and Cox, A. (9903). Appliances for use
with internal combustion engines, to adapt same for use
with paraffin, etc.

Breslauer, M. (9937). Dynamo electric gears of the unipolar
type.

British Thomson-Houston Company (General Electric Co.)
(9766, 9812). Regulators for polyphase transmission
systems.

British Thomson-Houston Company (General Electric Co.)
(9938). Protection of electric transmission systems.

Callender’s Cable and Construction Company, and Kay, C.
W. (9760). Towing ropes, wires, or cables.

Chemiscbe Fabrik Griesheim-Elektron (9714). Process for
production of alloy containing magnesium, and serving
for deoxy disation of cast iron or steel.

Clark, P. H. (9916). Fluid pressure gauges.

Ooatalen, L. (9857). Internal combustion engines.

Coles, S. 0. Cowper- (9848). Electrolytic process for manu-
facture of metallic wire and strip.

Constantinesco, G. (9930). Transmission of impulsive
forces.

Dale, W. B. (9915). Fluid pressure reducing valves.

Dale, W. B. (9916). Fluid pressure gauges.

David, D. (9722). Shackle or coupling link.

Davis and Son, J., and Dearie, G. (9797). Mine signalling.

Davis, H. N. (9830). Liquid fuel burners.

Downes, A. (9854). Elastic fluid engines.

Duflos, A. (9832),. Breaking or cutting metal bars or blooms
in a cold state.

Ferguson, J. M. (9887). Internal combustion engines.

Fessenden, R. (9721). Operation of motive power apparatus.
France, A. G. (9912). Connection devices for tension wires,
etc.

Gann, J. (9868). Automatic vehicle signaller.

Grayson, E. (9786). Reversible pick and socket.

Greene, A. C. (9679). Boring through ground.

Grimwade, W. R. (9770). Process of distillation of tar, tar
oils, carbolic acid, cresylic acid, etc.

Gunn, A. L. (9705). Packing material.

Hadfield, Sir R. A. (9725). Manufacture of rolls.

Heyl, G. E. (9765). Furnaces for steam generators.

Holmes, P. (9797). Mine signalling.

Lawson, E. D. (9705). Packing material.

Marston, F. (9941). Belt elevators.

Milligan, J. (9728). Mine signalling apparatus.

Mills, E. (9854). Elastic fluid engines.

Muirbead, W. (9906). Manufacture of basic steel.

Naamlooze Vennootschap Holland Ventiel (9823). Check
valves.

Norris, H. K. (9967). Mechanical lubricators.

Roots, J. D. (9708). Internal combustion engines.

Southall, J. (9953). Internal combustion engines.

Stirling, D. R. (9793). Means for lighting oil fuel burners.
Tasker, E. E. (9923). Steam and gas superheaters.

Taylor, W. (9668). Breeze washing and purifying plant.

Twigg, W. R. (9830). Liquid fuel burners.

Walton, H. (9772). Turbines.

Webster, H. R. (9798). Gas testing apparatus.

White, W. A. (9767). Liquid fuel furnaces.

Wilkinson, H. 0. (9878). Means for varying stroke of
reciprocating engine.

Wil'lans and Robinson (9887). Internal combustion engines.

Wood, T. E. (9688). Apparatus for water cooling, con-
densing, air heating, superheating, etc.

Wood, W. R. (9881). Travelling grate stokers.

Complete Specifications Accepted.

(To be published on August 3.)

1915.

216. Reversing and regulating gear for internal combustion
engines. Kilburn (Geb. Sulzer Akt.-Ges.).

5223. Steam condensers. Ramsay.

8507. Setting of gas retorts. Carpenter, and Riter-Conley
Manufacturing Company.

9876. Means for actuating the fuel pumps of internal com-
bustion engines. Ogle.

9908. Combined lighting and ignition systems for use with
internal combustion engines. Neuland.

9988. Means for mixing and burning gases. Hall.

10040. Atomisation of liquids, and in particular of liquids
having a considerable viscosity. Lipinski.

10056. Water tube boilers. Turnbull.

10101. Apparatus for casting ingots, and particularly steel
ingots. Kennedy.

10242. Shaft packings. British Thomson-Houston Company
(General Electric Company).

10247. Internal combustion engines. Tacchi, and Centrum
Syndicate Limited.

10331. Valve gear for pneumatic tools. Christiansen.

10379. Turbines. Brockelbank.

10802. Valves and cocks. Derham.

10940. Filters, specially applicable to feed water filters.
Watson and Billetop.

11315. Scrubbers for coal and like gas. British Coke Ovens
Limited, and Schuster.

11319. Fuel economiser blocks for domestic fires. Kirke.

11588. Water purifier, oil remover, and circulator for steam
generators and the like. Pomeroy’s “ Moa ”
Water Softener Syndicate Limited, and Pomeroy.

12670. Fastenings for wire ropes and the like. Head,
Wrightson and Company, Wnightson, and Rin-
quist.

13455. Apparatus for cleaning coal. Wood.

13849. Mining for military and other purposes. Thomson.

13882. Controlling the supply of oil fuel to internal combus-
tion engines. Crossley and Hutton.

15069. Motor pistons. Rich.

16979. Method of polishing and preserving iron or steel from
rust. Van der Meulen.

17574. Furnaces for heating billets for tool forgings and the
like. Price.

17928, Feed water heaters for steam generators. Daneri.

1916.

[Note.—The numbers following the application are those
which the application will finally bear.]

234. Apparatus for removing dust and the like in the opera-
tion of stone cutting and other tools. Fraser, D.

100817

2532. Firebricks and the like, and cores for use therewith.

Williams, E., and Girling, W. H. 100823

2810. Means for supplying steam to horizontal coke ovens.

Geb. Hinselmann (firm of).	100348

4025. Air compressors. Reavell and Company, and Reavell,
W.	100810

5011. Fluid pressure gauges. Bradley, E., and Richards,

G. B.	100814

5774. Valves and valve gear of internal combustion engines.

Serex, C. E.	100821

6125. Axial flow turbines. Reede, A. A. W. van. 100404

6613. Treatment of feed water for preventing corrosion and
incrustation in steam generators and the like.
Laraque, H.	100830

8106. Valve mechanism. Miller, H. P. E., and Tetlow, E.

100827

Complete Specifications Open to Public Inspection Before
Acceptance.

1916.

[Note.—The numbers following the application are those
which the application will finally bear.]

9358. Gas producer plants. Dolensky, E.	100843

9541. Electric rotary converters. British Westinghouse
Electric and Manufacturing Company. 100847

9714. Process for the production of an alloy containing mag-
nesium and serving for the de-oxydisation of cast
iron or steel. Chemische Fabrik Griesheim-Elek-
tron.	100848

GOVERNMENT PUBLICATIONS.

*** Any of the following publications may be obtained
on application at this office at the price named post free.

COAL SHIPMENTS : TABLES FOR 1914 and 1915,
3|d.

Reports of the Registrar of Friendly Societies on Trade
Unions for 1914, 4|d.

Bills, 1916 : Gas Standard of Calorific Power, Id.; National
Insurance (Part 2), Munition Workers, 14-d.; Registration of
Business Names, 2d.; Public Works Loans, Id.

Customs and Excise : Sixth Report for 1914-15, Is. l|d.

Finance Bill as Amended and on Report and on Re-com-
mittal, 6|d.

Board of Education : Interim Report of the Consultative
Committee on Scholars, 6d.

Trade of Australia for 1915, 5d.

PUBLICATIONS RECEIVED.

The Coming Crash of Peace and Britain’s Mechanical
Renaissance. By T. C. Elder. London : Simpkin, Mar-
shall, Hamilton, Kent and Company Limited. Price, 2s.#
net.

“ Mining Magazine ’’ (Vol. 15, No. 1), July, price Is.; “.The
National Physical Laboratory Report for 1915-16’’;
“ Monthly Bulletin of the Canadian Mining Institute ”
(No. 51), July; “ The Journal of the Western Society of
Engineers ’’ (Vol. 21, No. 1), January; “ List of Members,
Articles and By-Laws of the Institution of Mechanical
Engineers, 1916’’; “Transactions of the Institution of
Mining Engineers ” (Vol. 51, Part 3), price 6s.; “ Queens-
land Government Mining Journal ’’ (Vol. 17, No. 189),
February, price 6d.

Uruguayan Coal Duty.—The Uruguayan Minister, London,
has received the following telegram from the Minister of
Finance, Monte Video :—“ The new law which modifies the
Customs duty on mineral coal has been sanctioned. In lieu of
1 peso ($ gold) per ton which was charged on same for import
duty, there will be charged on the quantity stated in the bill
of lading five hundredths of a $ gold (0$*05c.) on coal dis-
charged for any destination, and each collier will pay 15c. per
ton as port dues. There will be absolute liberty for the coal
business as soon as the duty is paid. This reform complies
exactly with the request made by Mr. Charles Pettit (manager
of the English firm of Mann, George Depots Limited,
London), who thereby considers that the Port of Monte Video
is superior to any other for the supply of coal to ships. I
beg your Excellency to bring this to the notice of the interested
parties in Great Britain.’’

American Bureau of Mining Economics.—Upon the recom-
mendation of a committee of the American Mining Congress,
there is now being organised a Bureau of Mining Economics,
to advise the public of the real importance of the mining
industry to every other business, and to point out the needs
of the industry. The proposed Bureau will be in charge of a
high-grade statistician, equipped with all the necessary faci-
lities for assembling, compiling, and making available for
practical use all possible information.' concerning every phase
of the mining industry. The service of the Bureau is to be
open to members of Congress, to members of State legisla-
tures, and any others to whom the information might bo of
use, and concerning which enquiry might be made. This
wrork is to be under the direction of a committee, representing
the various branches of the mining industry, to be selected
by the directors of the American Mining Congress and the
subscribers to the service. The expense of the Bureau is to
be met by subscriptions so divided that every branch of the
industry may contribute its proper share in a broad, imper-
sonal way, so that the organisation may speak as the repre-
sentative of the whole industry, and it will consider only such
matters as are of general interest, and upon which there is
substantial agreement among mining men. It is proposed to
furnish prompt information to all subscribers concerning pro-
posed legislation before Congress and the several State legis-
latures ; to provide for such publicity as will be serviceable in
fostering good and discouraging bad legislation : to advise all
those whose special interest in any undesirable legislation
would seem likely to secure their actual opposition to its enact-
ment, and to carry on a propaganda to educate the public to
a proper appreciation of the needs of the mining industry. The
details for the operation of this Bureau will be under the
direction of the committee referred to, the members thus far
selected being Messrs. S. D. Warriner, of Philadelphia;
Frank S. Peabody, of Chicago; B. F. Bush, of St. Louis;
and Dr. L. D. Ricketts, of Arizona.