404

THE COLLIERY GUARDIAN

August 23, 1918.

117421. Improved Means for Controlling Pneumatic Per-
cussive Tools. C. H. Haeseler, 2532 South Twenty-second-
street, Philadelphia, Pa., U.S.A.—Relates to pneumatic
tools as described in Application No. 117313, and is in-
tended to provide means for holding the working tool in
association with the percussive tool, and to provide fluid
pressure means to retain the working tool beyond the range
of the piston of the percussive tool when the latter is
not held against the work. The fluid pressure means used
during the forward stroke of the piston is preferably live
motive fluid, and during the forward stroke of the
piston compressed motive fluid. The tool is provided
with a handle consisting of a grasping portion and
a head block or sleeve. The grasping portion is pro-
vided with throttle valve mechanism, and the head block
contains the main distribution valve casing. A casing
or cylinder is provided with a piston chamber in which
reciprocates a piston, the forward end of which is pro:
vided with an impact portion of a reduced diameter. The
impact portion is adapted to loosely fit and extend through
an aperture, and impacts against the shank of a working
tool of any desired character. The aperture is of less
diameter than the piston chamber, thereby forming a
shoulder, which prevents the piston from passing through
the forward end of the casing. The aperture communicates
with another aperture which receives the shank of the
working tool. A motive fluid inlet is provided with a
nipple, adapted to be connected with a flexible hose lead-
ing to a source of motive fluid supply. A tool retainer,
consisting of a cylindrical sleeve having its forward end
provided with an inwardly extending flange, the inner
wall of which is preferably bevelled, has an aperture in
its outer end which communicates with a bore of such
internal diameter as to form a proper working fit with
the forward end of the working tool. The bore communi-
cates with a second bore of greater internal diameter
opening through the rear end of the retainer. At the rear
end of the retainer internal lugs are provided which
project into the second bore, and are shaped to conform
to seat forming lugs on the cylinder. A spring, preferably
helical, is contained within the second bore. The outer
face of the tool retainer is preferably knurled. The work-
ing tool is provided with a flange having a bevelled or
inclined face to co-operate with the inner bevelled wall of
the tool retainer. The cylinder is provided at its inter-
mediate ends with exhaust ports communicating with the
piston chamber and with the atmosphere. (Three claims.)

117348. Improvements in Apparatus for Feeding Fuel to
Gas Generators or the like. G. H. Bentley and E. G.
Appleby, both of 12, The Broadway, Westminster, London.
—-Relates to apparatus for feeding fuel to gas generators
or the like, into which the fuel is fed by means of a
rotary drum which delivers it on to an adjustable cone.
The feed drum is fitted with gearing, by means of which
it can be turned in one direction and then in the other.
This may be effected by means of a double ratchet wheel
and double pawl. It is found that by intermittently
reversing the drive of the feed drum a level surface is
maintained in the generator. The cone is pivoted to the
end of an arm carried by a frame which is detachably
secured to a frame supporting the feed drum. When
it is desired to repair the cone, the arm carrying it is
turned by means of a weighted lever until the cone is lifted
clear of the mouth of the generator. The frame carrying
the cone is then detached from the main frame, thus
allowing the repairs to be easily carried out. (Three claims.)

117374. Improverdf&hts in Caps for Rock Drills and
similar Fluid Pressure-operated Tools. F. A. Barstow,
16, Pilley Green, and F. F. Mairet, The Willows, both
of Tankersley, near Barnsley.—Relates to caps for rock
drills and similar fluid pressure-operated tools, and con-
• sists in an improved construction of drill cap having the
orifice in the outer end, and formed to admit of it being
passed over a drill having a cutting edge of larger width
than the collar on the shank, or even of larger width than
the nose of the machine. (Six claims.)

117375. Improvements in Firegrates for Furnaces with
a View to Facilitating the Removal of Ash. T. W. Stinch-
combe, 580, Chatsworth-road, Chesterfield, Derbyshire.—
Relates to firegrates for furnaces, such a,s those connected
with steam generators, for gas producers, refuse de-
structors, metallurgical or other purposes, and consists in
an improved form of construction with a view to facili-
tating the removal of ash. The firegrate is in two longi-
tudinal sections, curved or inclined downwards laterally
towards a central trough, so that the ash in the fuel has
a tendency to gravitate towards the said trough. The fire-
bars are made up of two rows of separate bars, tied,
together by bolts and supported on tie rods and on the
edges of the trough. In some cases the firebars may be
made in one piece instead of two. The ashes are removed
from the trough by means of a series of push plates
arranged in steps or as a gradual inclined plane, and
operated as a whole or independently. Any suitable
mechanical arrangement may be employed for actuating
the push plates. The movement of the pusher plates tends
to keep the ashes in the trough and immediately above
it continually moving forward towards the outlet from
the ash-pit, and this constant withdrawal of ashes tends
to create hollows in the middle of the fuel bed, which,
however, are more or less instantaneously filled up by
the gravitation of fuel and ashes from the side sections
of the fire-bar. In this way the principal part of the fire
is kept free from ash, and consequently is maintained in
a state of efficient combustion. The parts of the trough
subjected to the greatest heat are protected by jackets
through which steam, air or water may circulate. (Five
claims.)

117476. Improvements in Air Supply Fittings for Chain
Grate Stokers. Babcock and Wilcox Limited, 30 Farring-
don-street, London, E.C. 4; A. E. Parker, 56, Lyncroft-
gardens, West Hampstead, London, N.W. 6; S. Davy,
162, Rosendale-road, Dulwich, London, S.E. 21 ; and
D. G. Meiklereid, 98, Burnt Ash-hill, Lee, Kent.—Relates
to improvements in and connected with mechanical chain
grate stokers, and consists in an arrangement in the stoker
of fixed division plates and movable division plates hinged
thereto in conjunction with movable division plates in the
form of louvres or the like in the side walls of the stoker,
whereby, such stoker can be used under conditions of
natural draught, or alternatively, and without any inter-
ference with the working of the stoker, with air under
pressure. The stoker carriage is formed with an aperture
designed to receive and make contact with an air duct in
the wall of the furnace in such manner as not to interfere
with the free withdrawal of the stoker from the furnace,
the connections being so arranged that when the stoker
is in its proper position in the furnace the openings through
the carriage frames are completely shrouded and the
material escape of air thus prevented. A plate or a series
of plates mounted beneath the stoker and supported by
transverse members forms a carrier of known form for the
bottom run of chain, and serves to receive the fine coal or

ashes dropped through the upper half of the grate, which
coal or ashes are carried forward to the front of the stoker.
(Three claims.)

NEW PATENTS CONNECTED WITH THE
COAL AND IRON TRADES.

Applications for Patents.

August 12 to 17 (inclusive).

[Note.—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.]

Albrecht, W. H. Fabric for manufacture of bags for
propellant explosives. (13251)

Alexander, F. H., and Gillie, J. W. Sextants. (13047)
(American Linseed Company). Apparatus for containing
and consuming fuel. (13071)

Anderson, F. A. Furnaces for distillation of coal, etc.'
(13221)

Beccari, G. Domestic oven for making charcoal, designed
for carbonisation of wood and manufacture of illu-
minating gas. (13161)

Beccari, G. Continuous action oven or pyre for manufac-
ture of charcoal. (13162)

Bennett, W. F. Fuses for blasting. (13134)

Brady, N. P. W. Furnaces for distillation of coal, etc.

(13-221)

Carlin, J. Debris-tipping systems. (13269)

Colquhoun, T. G. Ash dumper for mechanical chain-grate
stokers. (13239)

Covert, E. C. Feeding pulverulent fuel. (13322)

Cram, T. B. Material conveyers for furnaces. (13153)
Deacon, M. Furnaces for distillation of coal, etc. (13221)
Etcheverry, H. H. G. Cable track-ways for railways,
tramways, etc. (13065)

Fairrie, J. L. Conveyer rollers. (13250)

Ferguson Furnace Company. Material conveyers for
furnaces. (13153)

(Friedrichs, F.). Pumps. (13147)

Harwood, E. G. Appliance to fix on fire-places with open
grates, making same into closed grates. (13243)

Helps, G. Manufacture, utilisation and combustion of
fuel. (13256) .

Hill-Jones Limited, T. Manufacture of artificial fuel.

(13414)

Hofmann, A. Mechanically stoked furnace. (13288)
Hughes, C. M. C. Manufacture of artificial fuel. (13414)
Naish, W. A. Rolling metals and alloys. (13149)
Oakley, M. C. Gripping clutch for ropes and bars.

(13274)

Rayner, G. H. T. Tool-retaining devices for percussive
rock drills, etc. (13245)

Rayner, P. Tool-retaining devices for percussive rock
drills, etc. (13245)

Semple, J. B. Detonation of explosives. (13360)

Soddy, F. Method of separating and fractionating con-
stituents of coal gas by means of charcoal and of
improving absorptive power of charcoal for gases.
13117)

(Trump, E. N.). Pumps. (13147)

Yates, H. Ash dumper for mechanical chain grate
stokers. (13239)

Complete Specifications Accepted.

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

(To be published on September 5.)

1916.

11225. Rogers, Sir H., and Walter, C. M. Furnaces for
the heat treatment of metals. (117903)

18034., Creischere, T. M., and Creischer, R. G< Machine
for making pellets from pulverulent or granular
explosive materials. (117904)

1917.

9701. Hughes, J. E. Fuel from waste materials and
the making and utilising of the same. (117921)
11557. Hodgson, L. S. Method of and appliances for
casting metal ingots. (117955)

11586. Grey, T., and Williams, T. M. Self-acting me-
chanical brake for railway and tramway
vehicles. (117956)

11593. Rowlands, P. O. Apparatus for separating dust
or powder from gases or air containing it.
(117957)

11909. Automatic Telephone Manufacturing Company and
Green, H. Electric signalling systems more
particularly for use in mines. (117969)

11917. Mascart, C. Band conveyers. (116254)

12887. Stafford Coal and Iron Company and Richmond,
J. R. Process for the recovery of potassium
salts from blast furnace flue dust or the like.
(117991)

14578. Brampton Bros, and Wadhams, G. Driving or
conveying chains. (118008)

16272. Dyson, S. Liquid fuel. (118021)

16565. Murdoch, F. T. Cranes. (118027)

17299. Soc. J. Munier et Cie. Elevators for blast furnaces,
kilns or the like. (111673)

17931. Hoyle, J. R., and Burn, H. S. Annealing,
tempering, or heat treatment furnaces for
metals. (118040)

18126. Oxley and Sons, G., and Oxley, G. H. Apparatus
and appliances for casting clusters or groups
of metal ingots. (118042)

Complete Specifications open to Public Inspection before
Acceptance.

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

1918.

349. Soc. pour 1’Exploitation des Brevets Bellem et
Bregaras. Puirip with controllable delivery.
(118081)

11760. Motala Verkstads Nya Aktiebolag. Feeding de-
vices for pulverulent fuel. (118100)

11761. Motala Verkstads Nya Aktiebolag. Feeding de-
vices for pulverulent fuel. (118101) •

12788. Soc. Anon, des Produits Refractaires de 1’Ouest.
Manufacture of silica bricks. (118116)

Conversion of Wasteful Grates.—The Coal Controller
is appointing a committee to devise some scheme whereby
wasteful grates may be converted into coal-savers. There
is no suggestion of new stoves or grates, the aim being
the conversion of old ones at a trivial outlay. The
committee will also consider schemes for using up coal
dust, available from the domestic cellar as well as at
the pits.

GOVERNMENT PUBLICATIONS.

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

Company Law Amendment Committee.—Report of the
Company Law Amendment Committee, price 2d.

Mines and Quarries.— General Report, with Statistics,
for 1917 by the Chief Inspector of Mines. Part I.—
Divisional Statistics and Reports, price Is. 3d. (London :
Published by His Majesty's Stationery Office.)

PUBLICATIONS RECEIVED.

“ Social and Industrial Reform,’' by Sir Charles W‘. Macara,
Bart (Manchester: Sherratt and Hughes, 34, Cross-
street), price 5s.; “ Cassier’s Engineering Monthly ”
(Vol. 54, No. 2), August, 1918: (The Louis Cassier Com-
pany Limited, 33, Bedford-street, W.C. 2), price Is. 6d.;
“ The Place and Importance of Science in Education."
An Address delivered before “ The Association for the
Scientific Development of Industry," Manchester, by
Edw. C. Reed, price 3d.; “Year Book of the Michigan
College of Mines, 1917-1918-Announcement of Courses
for 1918-1919" (published by the College, June 1918);
“Mine and Quarry" (Vol. 10, No. 4), July 1918 (pub-
lished by the Sullivan Machinery Company); “ The
Journal of the Chemical, Metallurgical and Mining
Society of South Africa" (Vol. 18, No. 12), June 1918,
single copies 3s.; “ The Journal of the South African
institution of Engineers" (Vol. 16, No. 12), July 1918,
single copies 2s.; “ I he Mining Congress Journal"
(Vol. 4, No. 7), July 1918, price 20c.; United States
Bureau of Mines—Department of the Interior (Bul-
letin 132), “Siliceous Dust in Relation to Pulmonary
Disease among Miners in the Jollin District, Missouri,"
by E Higgins and others; (Bulletin 149), “Bibliography
of Petroleum and Allied Substances, 1915," by E. H.
Burroughs; (Bulletin 151), “Recovery of Gasoline from
Natural Gas by Compression and Refrigeration," by
W. P. Dykema; (Bulletin 164), “Abstracts of Current
Decisions on Mines and Mining, reported from September
to December 1917," by J. W. Thompson; (Technical
Paper 144), “The Quick Determination of Incombustible
Matter in Coal atd Rock-dust Mixtures in Mines," by
A. C. Fieldner and Othei^; (Technical Paper 184),
“Weights of Various Coals," by S. B. Flagg; (Technical
Paper 185), “Use of the Interferometer in Gas Analysis,"
by F. M. Seibert and W. C. Harpster; (Technical Paper
189), “Temperature-Viscosity Relations in the Ternary
System CaO-Al2O3-SiO2," by A. L. Field and P. H.
Rayter; (Technical Paper 194), “Report of the Com-
mittee on the Standardisation of Mining Statistics,"
compiled by Albert H. Fay; “ Monthly Statement of
Coal-mine Fatalities in the United States, March 1918 —
List of Permissible Explosives, Lamps and Motors,
Tested Prior to April, 1918," compiled by Albert H. Fay.

The Industrial Reconstruction Council.—A series of
conferences and discussions is announced by the Indus-
trial Reconstruction Council, to be held at 6 p.m. in the
hall of the Institute of Journalists, Tudor-street, E.C., at
fortnightly intervals, alternately with the lectures at the
Saddlers’ Hall. The first of these will be opened by
Mr. R. Wilson, of the Ministry of Labour, on Tuesday,
September 10, with an address on Works Committees.
On September 24 the subject will be “ Trade Boards,”
and the speaker Mr. J. J. Mallon, of the Anti-Sweating
League.

Mine Managers’ Examinations.—The following is the
list of successful candidates at the examination held by
the Board for Mining Examinations on May 22 and 23,
1918 : For a first-class certificate of competency as manager
of a mine :—Messrs. W. Adam, W. Bailey, G. R. Barke,
W. Bartley, T. Blair, G. G. Bourne, T. H. Breed,

F.	Buckroyd, W. Claytor, D. D. Davies, L. Davies, M. H.
Davies, L. Dunning, D. T. Evans. J. O. Evans, J. S.
Evans, E. R. Flint, W. Frame, W. J. B. Gair, D. Gibb,
W. Gillespie, R. Gregory, W. Gregson, H. S. Handy,
E. Harrison, A. Heatherington, A. Hinton, L. Howells,

S.	Hughes, A. Hutt, A. E. Jones, D. Jones (Bargoed),
W. A. Jones, G. Lancaster, K. G. Lazenby, J. L. Le
Brun, R. Lewis, 8. Lockett, G. Lord , J. L. Merry,
J. Miller, G. Moxon, W. H. Napier, R. G. Natress,

T.	Noden, J. C. Pickles, R. H. Powell, C. G. Priest,

D.	Ramsay, J. Rees, E. Rhoden, J. E. Richardson,

G.	Riley, A. W. Rogers, R. Rogerson, R. Rosser, T. W.
Scothorne, T. J. Sims, W. A. Spray, H. V. Starr,

G.	Stewart, D. J. Thomas, E. Thomas, J. Thomson, A. M.
Tripriey, J. E. Waring, T. E. Watkins, J. H. Wilkinson,
A. Williams, J. Williams, A. Winstanley (Sheffield),
A. Winstanley (Wigan), J. Woodland. In addition to
the above two war service candidates (J. H. Lang and
C. Lymn) have successfully passed the examination, but
before a certificate of competency can be issued to them
they are required to obtain some further practical expe-
rience in order to complete the period required by the Coal
Mines Act, 1911. For a second-class certificate of com-
petency as under-manager of a mine :—Messrs. H. G.
Andrew, S. J. Andrews, A. Armstrong, W. A'stley, W. T.
Bailey, W. G. Barnett, J. Barton, R. Belfitt, O. Bellerby,
L. Booth, W. Bridgewater, R. Carrier, H. Clayton,

H.	Clement, C. W. Cole, E. Corless, A. Croasdale, W.
Curran, J. E. Daniel, T. Davenport, C. W. A. Deans,

G.	Doughty, J. Dunn, G. Evans, C. J. Fletcher, F. M.
Fletcher, C. Freeland, Junr., A. E. Fry, P. Fullwood,

R.	Green, R. S. Griffith, H. Griffiths, J. A. Hardwick,
A. Hardy, J. Harris, W. J. Harris, J. D. Hill, E. A.
Hipkiss, J. J. Hopkins, J. Howe, T. A. Howells, J.
Huges, H. James, I. James, J. W. Johnson, F. J. John-
ston, J. Jones, T. Jones (Troedyrhiw), R. C. Kay, C. R.
Lamb, J. E. Leader, G. R. Lister, J. T. Machin, W.
Mackie, F. J. Mann, C. H. Maycock, P. McD. McGhee,

S.	F. Middup, A. Moore, D. J. Morgan, E. H. Morgan,
J. Mexham, R. Muir, F. Nicholas, A. R. Peers, E. Platt,
W. Platt, W. Price, C. Priest, G. Raynes, J. Rimmer,

H.	Rogers, C. Rolfe, J. Sables, E. H. M. Saxton,
A. Scott, W. Satchell. G. H. Shaw, M. Sinclair, H. Smith,
W. J. Smith, C. E: Staples, W. Stewart, G. Sydserff,
A. E. Tagg, H. Talbot, B. V. Teather, A. E. Temple-
man, D. Thomas, G. D. Thomas, S. Thomas, A. Thomson,
H. Vernon, W. Walters, W. Wandless, A. E. White, T. E.
Woozley, T. Wright. For a certificate of qualification
as surveyor of mines :—Messrs. W. D. Allan, J. E. Bellis,
J. Benzies, Junr., A. D. Bowdler, G. F. Buckle, B.
Bunting, G. K. Burrows, W. Clarke, A. T. Conn, A. M.
Creswick, J. Davidson, J. Davies, Junr., H. J. Finney,

R.	W. Gallantry, T. Gordon, R. E. Hall, H. Jenkins,

E.	C. Johnson, J. W. Johnson, E. King, T. E. Liddell,
A. Morgan, D. M. Mowat, A. Myatt, B. H. Rand,

S.	Rogers, J. T. Shaw, W. J. Smith, A. H. Summers,
J. Sutherland, J. Traill, C. Turnbull, R. H. Walters,

T.	W. D. White, D. R. Williams, J. T. Williams.