1062

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THE COLLIERY GUARDIAN.

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May 24, 1918.

the back movement of the said sprocket wheel. The inven-
tion has for its object to simplify and render the construc-
tion of the said type of apparatus more reliable and
effective. An apparatus constructed in accordance with
this invention consists of a bar having at one end a plate-
like projection in which is mounted a short shaft projecting
from each side thereof. To one end of the said shaft is
suitably secured a notched disc, and on the said plate
a spring bolt in operative connection with the said notched
disc. On the other end of the said shaft a sprocket wheel
is suitably secured, over which is placed the chain secured
to the prop to be pulled down. Adjacent to the said
sprocket wheel, a ratchet wheel is secured upon the respec-
tive end of the said shaft, and a lever is fulcrumed thereto
having a spring pawl arranged in engagement with the
said ratchet wheel. (Two claims.)

114745. Coupling of Colliery Trams. A. Davies,
Penybank Cottage, Fforestfach, near Swansea. — The
improvement is composed of a wire or rope with a lock
jaw at each end, and the length of the usual journey
of trams generally worked in collieries. It is easily fixed
to the journey of trams, whether full or empty, and in
case the coupling, or so-called shackler hitching plate,
should break, the improvement will hold the whole journey
of trams within six inches. The power and strength
of the improvement can be fixed to answer the inclination
of collieries or loading of trams. Where one rope is used
in slants or drifts the improvement is to be fixed to the
chain of the haulage rope and underneath the trams to
the last hitching or shackle ; where two ropes are used
called tail and main, the improvement can be fixed to
both ropes as easily as it can be fixed to one. It is
claimed that this improvement is a great life saver as well
as a great property saving improvement underground ;
and by means of it a more regular output of coal can
be obtained. Where the hitchplate or shackle breaks,
it causes great damage, knocking timber and causing great
falls, and smashing pipes and causing the colliery to
flood.

114756. Safety Automatic Devices for Cages and Shafts
for Coal Pits. E. A. Considere, 16, Pudge-road, Coventry.
—This invention has reference to safety automatic devices
for mine cages and shafts, particularly of the kind
described in Specification 4273/09, and has for its object
to provide improved arrangements upon the cage and shaft,
designed so that in the case of the cage the maximum
amount of play or sag of the hoisting rope is allowed when
winding without the automatic brakes upon the cage
coming promiscuously into operation upon the guide
ropes, or their equivalent, the automatic brakes upon the
cage are prevented from coming into action upon the
guide ropes when the cage comes to rest at the top, bottom,
and at intermediate landing stages in the shaft, thus
prolonging the life of the guide ropes which would other-
wise become quickly destroyed by the constant contact
of the brakes upon the guide ropes. The automatic brake
may be attached to the guide ropes without the necessity
of threading the guide ropes through the toggles or links
of the brakes, thus facilitating the mounting of the cage
upon the guide ropes and shaft. The automatic brakes are
permanently disconnected from the connection between
the hoisting rope and the brakes in the event of coming
into action by the absence of tension upon the hoisting
rope, thereby allowing the cage to be hoisted in the latter
event in full action upon the guide ropes, thus ensuring
the safety of the passengers in the cage. (Six claims.)

114764. Pit Props. W. Foggo, "The Glen,” Brereton,
Rugeley.—This invention has reference to wooden pit
props, and the like, the object being to provide simple
and efficient means for securing together, end to end, two
or more short lengths of timber so as to form a prop
of the required length. This invention comprises a
malleable cast iron or other metallic socket-like connector
which is of tubular formation, and preferably of circular
form in cross section, and is shaped so as to taper out-
wardly from about the centre to the two ends, which
latter are made of about the same internal diameter as
are the short lengths of wooden props, or the like, to
be connected together. The two open ends of the con-
nector thus form two taper sockets into which the tapered
ends of two short lengths of prop can be driven and
thereby connected together and thus form a prop which
will withstand the compressive strains to which it will
be subjected. Thus short lengths of pit props, each of
which is itself too short to form a prop may be used up.
The said connector is preferably strengthened by having-
longitudinal ribs cast on the central portion of its exterior,
and extending to or towards its open ends. (Three
claims.)

____________________________

MEW PATENTS CONNECTED WITH THE
COAL AND IRON TRADES.

Applications for Patents.

May 13 to 17 (inclusive).

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

Abrahams, E. Goldsmid-, and Parker, J. W. Apparatus
for generation, from incandescent carbonaceous
material, of fuel gas for internal combustion engines.
(8296)

Acock, R. Fuel economisers for fire places, etc. (8035)
Anderson, J. Control of alternating current electric

motors. (8226)

Andrew, T. Fans. (8157)

Anzulond, A., and Murphy, E. Earth boring machine.

(8256)

Armstrong, R. B. Water-tube steam boilers. (8142)
Batchelor, H. Furnaces. (8285)

Baumann, K. Turbines. (8254)

Bockman, 0. C. Processes for reduction and smelting of
ores. (8271)

Bockman, 0. C. Reduction of ores. (8272)

Bockman, O. C. Electric induction furnaces. (8273)
Bockman, O. C. Furnaces, etc. (8274)

British Westinghouse Electric and Manufacturing Com-
pany. Electric motor control systems. (8002)

British Westinghouse Electric and Manufacturing Com-
pany. Apparatus for maintaining vacuum in steam
condensers, evaporating plant, etc. (8253)

British Westinghouse Electric and Manufacturing Com-
pany. Turbines. (8254)

Coppin. T. I. Internal combustion turbines. (8095)
Cranmore, W. E. Pit props, piles, telegraph poles,

columns, etc., and manufacture of same. (8192)
Crowcroft, A. Furnaces. (8137)

Davies, J., and Tuck and Company. Shackles for colliery
tramcars, etc. (7986)

Ellinghaus, F. Internal combustion engines. (8151)

Ellison, G. Control of alternating current electric motors.

(8226)

Freer, W., and Schauermann, F. L. Liquid fuel. (8079)

Fryer, G. Dynamo-electric machines. (8334)

Gaddis, F. Steam engine. (7962)

Gronvall, J. G. Mechanism for reversing internal com-
bustion engines. (8073)

Harrison, G. B. Stabilised magnetic compass. (7969)

Hawthorn, Leslie and Company, R. and W. Water-tube
steam boilers. (8142)

Holt, R. D. Electric generators. (8081)

Horiuchi, H. Vertical cylindrical water-tube boilers.

(8284)

Kinchin, J. W. Internal combustion engines. (8104)

Lymm, A,. H., and Rambush, N. E. Gas producers.

(8258)

McCafferty, J. Stemming or tamping tool for mining,
quarrying, etc. (8056)

McDermott, W Apparatus for concentration of crushed
ores. (8076)

Miller, L. Electric motor control systems. (8002)

Morris, F. Furnaces. (8137)

Niblock, J. Internal combustion engines. (8123)

Nielsen, R. H. Apparatus for automatically greasing or
lubricating rails or flanges of wheels while passing
around curves. (8021)

O’Donnell, J.P. Powdered fuel, and process of treating-
same. (8310)

Oldham, G. and J. Miners’ safety, etc., electric lamps.

(8161)

Portable Electric Motors Limited. Dynamo-electric
machines. (8334)

Reed, V. Z. Extraction of hydrocarbon products from
shales and coals. (8330)

Richmond Gas Stove and Meter Company, and St. Leger,
A. Automatic feeding water heaters or boilers.
(8037)

Rizzo, G. Steam generators. (8017)

Roth, P. O. Boiler. (8329)

Rowlands, P. O. Liquid pumps. (7977)

Scanes, A. E. L. Apparatus for maintaining vacuum in
steam condensers, evaporating plant, etc. (8253)

Sheard, J. T. Manufacture of sulphate of ammonia.

(7972)

Smeeton-Wright Furnaces Limited. Gas fired furnaces.

(8309)

Smith, V. Water-tube boilers. (7965)

Suchostawer, D. Electric dynamos. (8300)

Wright, S. System of firing steam boilers. (8183)

Wright, T. Gas fired furnaces. (8309)

Zwicky, J. Pumps and compressors. (8303)

Complete Specifications Accepted.

(To be published on June 6.)

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

1916.

14059. Giesecke, C. Process for sintering fine ores, flue
dust, purple ore, iron filings, and the like.
(115441)

1917.

3812. Segay, A. Explosives. (113083)

4249. Heyl, G. E. Process for obtaining a distillate of
shale free from sulphur. (115452)

6377. Veasey, J. H. Rock drills. (115462)

6492. Rees, E. S. G. Centrifugal pumps, condensers, and
the like. (115473)

6508. Crompton and Company, and Pensabene, N. High-
frequency alternating current dynamos.
(115475)

6555. Wood, H.N. Portable conveyers and like haulage
or transport apparatus. (115478)

6557. Wells, R. F. Aerial railways. (115480)

6774. Hathaway, D. J. Internal-combustion engines of
the two-stroke type. (115499)

7354. Holt, W., and Brooks, B. Self-regulating dynamo-
electric machines. (115509)

7695. Jones, T. A. Miners’ and like safety lamps.
(115515)

10009. Lewis, E. F., and Lewis, R. J. Concrete props and
beams for supporting the roofs of coal mines
and other mines, and for like purposes. (115539)

10135. Jorgensen, A. V. N. Steam boiler furnaces.
(115541)

10396. Connolly, J. Crucible furnaces. (115543)

10712. Notarianni, G. Safety device for mines, tunnels
and quarries for use in blasting. (115545)

11004. Hird, L. E. Devices for controlling the fuel con-
sumption in domestic and other fire-places.
(115549)

11678. Wrightson, W. P. Ventilating pipes for colliery
and other purposes. (115555)

12478. British Westinghouse Electric and Manufacturing
Company (Westinghouse Electric and Manu-
facturing Company). Control systems for elec-
tric motors. (115563)

12480. British Westinghouse Electric and Manufacturing-
Company (Westinghouse Electric and Manu-
facturing Company). Phase balancers or phase
converters for polyphase distributing systems.
(115564)

12856. Shannon, H. Liquid fuel. (114411)

13286. Watson and Company, T. H., Greaves, H. A.,
and Etch ells, FI. Electrical system for electric

• furnaces. (115570)

13485. Justice, P. M. (Pirani, S. G.). Method of obtain-
ing motor fuels and light paraffin oils from shale,
and benzene, toluene, and solvent naphtha from
coal. (115573)

15195. Davey, H. Fuel economy of multiple effect steam
engine and steam turbine plants. (115582)

15416. Foster, H. C. Flooks for cranes, derricks, and the
like. (115584)

16894. Achard, R. Heat interchangers. (112263)

17651. Morley, W. H. U. Fire bars. (115592)

18316. Butterley Company, and Bircumshaw, J. Pit props.
(115596)

19254. Rayner, G. H. T., and Rayner, P. Valve apparatus
for rock drills and the like fluid pressure
operated tools. (115605)

1918.

152. Adams, W. L. Internal combustion engines.
(112461)

Complete Specifications open to Public Inspection Before
Acceptance.

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

1918.

7650. Grondal, G. Mechanical roasting furnace. (115639)

7734. Grondal, G. Mechanical feeding furnace. (115640)

7741. Motala Verkstads Nya Aktiebolag. Feeding devices
for pulverulent fuel. (115641)

7813. Does de Bije, A. J. M. A. R. van der. Furnaces.
(115644)

7862. Boissier, H. Solid fuel. (115645)

7908. Bohn, I. Rock drilling machines. (115647)
________

Restoration of Lapsed Patent.

An Order has been made restoring the Letters Patent
granted to Jens Orten Boving for “ An improved method
of and apparatus for compressing air or other gases,”
No. 11411/1910.

________________________

GOVERNMENT PUBLICATIONS.

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

Colonial Reports—Annual :—(No. 956) Northern Terri-
tories of the Gold Coast—Report for 1916 (London : Pub-
lished by His Majesty’s Stationery Office). Price 3d.

_________________________

PUBLICATIONS RECEIVED.

The Metallurgy of the Non-Ferrous Metals,” by William
Gowland, F.R.S., A.R.S.M. (London : Charles Griffin
and Company Limited, Exeter-street, Strand, W.C. 2),
price 25s. net; “A Handbook of Briquetting,” by
G. Franke (Volume 2) (London : Charles Griffin and
Company Limited, Exeter-street, Strand, W.C. 2), price
15s. net; “Bulletin of the Imperial Institute” (Vol. 15,
No. 4), October-December, 1917 (London: John Murray,
Albemarle-street, W. 1), price 2s. 6d. net; “Employes’
Magazine” (Vol. 5, No. 1), April 1918; “The Mining
Congress Journal ” (Vo. 4, No. 4), April 1918, 20c.
per copy; “The Oil and Petroleum Manual, 1918,”
by Walter R. Skinner (London: Published by Walter R.
Skinner, 11-12, Clements-lane, Lombard-street, E.C. 4),
price 4s. net; “ Decimal Money Tables—Containing Con-
version Tables for the Reduction of English Money
from or into any Foreign Money,” by A. M. Pooley,
B.A. (Published by the Syren and Shipping Limited,
91 and 93, Leadenhall-street, London, E.C. 3), price
2s. 6d. net; “Compressed Air Magazine” (Vol. 23,
No. 4), April, 1918, single copies 10c.; “The Journal
of Industrial and Engineering Chemistry ” (Vol. 10.
No. 5). May 1, 1918; “Central Association of Miners’
Permanent Relief Societies—1918 Conference”; “Bulle-
tin of the American Institute of Mining Engineers ”
(No. 137), May, 1918; “The Journal of the South
African Institute of Engineers ” (Vol. 16, No. 9), April,
1918,single copies 2s.; United States Bureau of Mines—
Department of the Interior :—(Technical Paper 181) “ De-
termination of Unsaturated Hydrocarbons in Gasoline,”
by E. W. Dean and H. H. Hill; (Bulletin 110) “Con-
centration Experiments with the Siliceous Red Hema-
tite of the Birmingham District, Alabama,” by Joseph
T. Singewald, Jun. ; “ Coal Mine Fatalities in the
United States, 1917—List of Permissible Explosives.
Lamps and Motors Tested Prior to January 31, 1918,”
compiled by Albert H. Fay.

__________________________

CATALOGUES AND PRICE LISTS RECEIVED.

Clayton and Company (Huddersfield> Limited (Karrier
Works, Huddersfield).—The company’s latest publication
is a folder which on being opened out flat presents all the
information at one view, without the need of turning over
pages. It deals with the “ Karrier ” industrial and public
service vehicles, which have established a name for trust-
worthiness under the exacting conditions of war service.
Special attention is directed to industrial chassis (50 h.p.).
The load capacity is tons gross, and the chassis is par-
ticularly suitable for bodies having a large area of wind
resistance. The folder contains a mass of useful details.

Simplex Conduits Limited (Garrison-lane, Birmingham).
—As the catalogue of electric light fixtures issued by
Simplex Conduits Limited is out of print, and the present
conditions make it impossible to issue a new and more
complete one, the company, for the convenience of their
clients, has issued a booklet illustrating a few of the
new designs, together with some of the better known
patterns. It is hardly necessary to point out that orders
for fittings not actually in stock must be accompanied with
a permit from the Ministry of Munitions. There is, how-
ever, quite a demand for the lesser expensive fittings for
the offices of the many new munition works and depart-
mental offices. We also understand that the company
has still a fair stock of pre-war fixtures, and would be
pleased to send illustrations and quotations upon request.

Johnson and Phillips Limited (Charlton, London, S.E.).—
A booklet descriptive of the firm’s all-steel draw-out truck
type switchboards is excellently printed in green and
black on fine paper. A switchboard of the kind men-
tioned is one in which the switches and other apparatus
are mounted on a movable “ truck ” so arranged that
when the truck is in the working position all live metal
is entirely enclosed behind its sheet steel front, and when
the truck is drawn out for inspection of the gear the act
of withdrawal automatically makes the parts mounted
on the truck “ dead ” and safe of access, at the same time
screening the fixed contacts which remain alive. This
type has been specially designed for generating stations,
district sub-stations, mines, works, etc., and is as nearly
“ fool-proof ” as any electrical apparatus can be. All
the details are clearly specified and illustrated in the
booklet.

____________________________

Exports and Imports of Mining Machinery.—The value
of imports and exports of mining machinery during
April is given below :—

April.	Jan.-April.

1917.	1918.	1917.	191?

£ £ £ £

Imports ......... 18,377 ... 2,631 ... 57,093 ... 51,859

Exports ......... 51,826 ... 44,669 ...257,373 ...187,606

These figures are not inclusive of prime movers or elec-
trical machinery. The following shows the value of
exports of prime movers other than electrical:—

April.	Jan.-April.

1917.	1918.	1917.	1918.

All prime movers £	£	£	£

(except electrical)... 223.892 ...211,439..1,284,176... 968.351

Rail locomotives .... 66,309	...110,113...	472,512...	516,968

Pumping ............. 23,843	13,725...	159,506...	75,881

Winding .............	—	... 1,489...	3,551...	8,788