932

THE COLLIERY GUARDIAN.

November 1, 1918.

resisting quantity or ferro silicon (such as the material
known in commerce as ironac) and/or other acid and
wear-resisting metal or material, which is ground so that
a very small clearance is left between the plunger and the
cylinder head which is of greater depth than is usual.
The inner wall of the cylinder is provided in the well-
known manner with a number of grooves (four, for example,
for retarding the escape of liquid round the plunger. The
plunger should be an easy sliding fit in the cylinder head,
and in practice a clearance of about two-thousandths of an
inch has been found successful. As regards the depth of
the cylinder head in practice it has been found satisfactory
to make its depth about equal to the diameter of the
plunger, but in some cases it may be desirable that it
should be nearer U times the diameter of the plunger.
(Three claims.)

119155. Self-closing Shaft Doors of Mine Galleries.
P. A. Newton, 6 Bream’s Buildings, Chancery-lane,
London, E.C. 4 (communcated by Monte Amiata Societa
Anonima Mineraria, of Abbadia, S. Salvatore, Siena,
Tuscany, Italy.—The object of the present invention is to
provide better means for ensuring the closing of the shaft
doors of mine galleries, thus enabling the accidents which
happen continually owing to the falling of workmen and
trucks into the shaft to be avoided. These accidents are
more frequent in those shafts where the cages serve to
load and unload the trucks not only at both ends, but also
at other intermediate stages, because the cages during
their course stop at one or another of these stages accord-
ing to need. While for the pit mouth as well as for the
pit bottom a simple and automatic pit closure may be
obtained easily by means of a ratchet grating, sliding
on guides and operated by the cages during their ascent
or descent, it is difficult to apply this arrangement to
the intermediate stages without adoptng complicated
devices, which would furthermore be very undesirable in
underground plant, where upkeep is not easy and the
machines must be operated in a moist and muddy en-
vironment.

119263. Discharge of Cargo in Bulk. A. Musker,
22, Northumberland-avenue, London, W.C. 2.—This in-
vention has reference to systems of the discharging or
removal of coal, ore, grain or like cargo in bulk from
barges or vessels, and the elevation and delivery thereof.
In Specification No. 110467 a system of discharging coal,
etc., in bulk from barges or vessels, and the elevation and
delivery thereof is described, in which a floating pontoon
carrying operating machinery is used and placed when
operating end on to the barge or vessel to be discharged.
While this system is very advantageous, in some cases it
is desirable that the space longitudinally taken up along-
side a ship, which is to receive the goods, and between it
and a quay, should be as small as possible; and the present
invention has for one of its objects and effects to provide
a system and arrangement by which said space is rendered
less than is necessary in operating according to the system
of the aforesaid invention. In the present system the space
taken up, is only that taken up by the barge or barges,
which will be between the side of the ship to receive the
coal or goods, and the quay, from which it—the ship—is
breasted off. (Six claims.)

119283. Conveyors. A. L. W. Begg, 1,482, Broadway,
New York.—This invention relates to conveyors or appara-
tus for the transportation of both freight and. passengers.
One of the objects of the invention is to provide a device
of this character that will furnish such transportation by
a gradual acceleration of movement of the articles car-
ried, with both safety and comfort. Another object of
the invention is to provide a device of this character that
can adapt itself to an irregular path of movement; the
object or passengers can be transported in a path that
diverges laterally, and which conveyor also is adapted to
carry passengers both up and down an incline, as well
as on a level. (Nine claims.)

119307. Pumps. The New Rotoplunge Pump Company
Limited, 24, Broadway, Westminster, S.W.l, C. Lakin-
Smith, 24, Broadway, Westminster, S.W.l, and N. G.
Beckwith, Kenilworth, Hampton-on-Thames, Middlesex.—
This invention relates to pumps and has reference par-
ticularly to pumps of that character where liquid from a
large cylinder is delivered to a small cylinder and any
excess above and beyond that required to fill the small
cylinder is returned through a non-return check valve to
the suction side of the larger cylinder. Such pumps are
particularly advantageous for lubrication purposes on air-
craft, since it has been found with lubrication pumps used
on aircraft that as the machine attains high altitudes the
delivery dimin1'shes owing to the increased viscosity of the
oil. This is probably due to the viscosity affecting the
flowing tendency of the oil with the result that the pump
cylinders do not get completely filled. The object of the
present invention is to provide an improved and compact
pump of the foregoing general character, and the invention
consists of a particular construction comprising an outer
casing, a cylinder body rotating within the casing and com-
prising a comparatively large cylinder and a compara-
tively small cylinder disposed at right angles one to the
other, double ended pistons reciprocating in the cylinders
by co-operation with internal eccentrics, the delivery from
the larger cylinder passing to the smaller cylinder through
a passage in the outer casing, any excess liquid beyond
that required to fill the smaller cylinder being returned
to the suction side of the larger cylinder through a passage
controlled by a non-return valve. (Two claims.)

119362. Means for Fastening Tokens or Tabs to Coal
Hutches, Etc. A. F. Ross, Rosslea, Park End, Girvan, and
T. Forsyth, 19, Glendoune-street, Girvan.—This invention
relates to means for fastening tokens or tabs to coal or
other hutches, corves, and such like. Under this inven-
tion the fastening means comprises a pivoted link or
staple having combined therewith a sliding locking pin
or its equivalent capable of being turned at a suitable
angle to the link or staple for the purpose of fastening the
token or tab securely to the coal or other hutch, corve,
or such like. The sliding locking pin is preferably made
with a loop or its equivalent at the one end which con-
stitutes the means whereby the device can be hung upon
a hook or nail when not in use. (Three claims.)

119379. Centrifugal Compressors. The British Thom-
son-Houston Company Limited, 83, Cannon-street, London,
E.C. (a communication from the General Electric Com-
pany, of Schenectady, NeW York).—The present inven-
tion relates to centrifugal compressors and particularly to
the regulation of two or more compressors operating in
parallel. When two or more compressors are operated in
parallel it is often desirable to apportion the total load
among them so that each will carry a certain proportion
of the total load at all times. For example, it may be
desirable in the case of two compressors operating in parallel
that each carry one-half the load, or that one carry two-
fifths and the other three-fifths of the load, or in the case
of three compressors operating in parallel that each carry
pne-third the load. The object of the present invention

is to provide an improved regulating mechanism for com-
pressors operating in parallel which will maintain the
desired apportionment of the total load among the several
compressors. (Three claims.)

119389. Hoisting Apparatus. G. Huntley, 6, Beech
Grove, Newland, and K. E. Vivian, 397, Spring Bank
West, both of Kingston-upon-Hull.—This invention has
reference to that type of hoisting apparatus wherein a
rack is secured to the rod of a piston of a fluid pressure
apparatus, which rack engages a pinion fast on the shaft
or a wheel to which one end of a hoisting rope is secured.
In apparatus of the kind referred to, it has been proposed
to employ a vertical cylinder, in which is a piston to the
rod of which the rack is connected, said cylinder being
provided with a valve chest, in which is a slide valve
which controls an admission port and an outlet port,
through the former of which steam is delivered into the
bottom of the cylinder to act on the underside of the piston
and force it and the rack up, and through the latter of
which the steam exhausts. With this apparatus the piston
has to descend by gravity alone. According to a modifi-
cation of the same device it has been proposed to employ
two cylinders side by side, in each of which is a piston
which between them carry the vertical rack, the one hav-
ing steam delivered into it at the bottom to force its
piston up and the other containing water or other liquid
and having a passage formed in the cylinder side connect-
ing the top and bottom of it, a screw valve being employed
to regulate the flow of the water or the like from one end
of the cylinder to the other, thereby enabling the speed
of the steam' piston and consequently the movement of
the rack and the hoisting wheel to be controlled, the two
pistons by their rods being connected working up and
down together. Apparatus of the kind described is only
adapted for use in cases where there is a supply of steam
of the necessary pressure at hand for use. The present
invention relates to improvements in apparatus of the
kind referred to, and it has for its object to provide
a portable hydraulic device for use on quays, dock sides, in
warehouses and the like where there is a supply of water
or other liquid of the requisite pressure, and it resides
in the improved construction of the apparatus whereby it
is readily portable, the ram is forced up by the liquid
delivered into the cylinder below the ram and is forced
down by liquid delivered into the upper part of the
cylinder, the arrangement of the ports to and from the
cylinder and of the valve which controls the same being
such that the liquid which forces up the ram and that
which causes its descent exhausts automatically at the
proper time to ensure regular working of the apparatus.
(Three claims.)

119413. Heating Flues of Chamber Ovens or Retorts.
C. W. Simpson, The Cottage, Ash Terrace, Headingley,
Leeds.—This invention relates to chamber ovens or retorts,
either of inclined or horizontal construction, for the car-
bonisation of coal or other carbonaceous matter, and it
consists more particularly in an improved and simplified
system or construction of heating flues for such chamber
ovens or retorts.

119415. Safety Appliance for Mine Cages. D. W.
Holmes, 11, Cleaves Houses, Foundry-road, Abersychan,
Monmouthshire, and H. J. Lewis, 9, Cleaves Houses, as
above.—This invention relates to devices for arresting the
motion of mine cages, lifts and the like when the hauling
rope breaks, and is directed to that kind of device in
which, slidable wedges are caused to grip rope conductors
by being forced into a recess or the like in a housing or
bracket fixed to or carried by the cage, said wedges being
actuated and in some cases assisted by springs on the
breaking of the hauling rope, by the fall of the carrying
chains of the cage, and by levers connected to the hauling
rope. In the above connection friction on the wedge when
the cage is running has been obviated by arranging the
housing of, and the wedge, intermediate of the conductor
guides, so that the swaying of the conductors only acts
upon said conductor guides. Further, the wedge housing
through which the conductor passes has been formed with
a vertical side having a semi-circular groove therein
parallel with the conductor and the opposite side flat and
at an aglee thereto for the reception therebetween of
the wedge whose face adjacent the conductor is formed
with a semi-circular groove therein parallel with the
conductor, said wedge being connected by a vertical rod
with the outer end of a lever which is pivotally mounted
on the roof of the cage and by its inner end connected
to a vertical rod to which the hauling rope is attached.
The object of the present invention is to provide a simple
and efficient device of the kind set forth, which can be
adapted to any cage without rearranging the rope con-
ductors to suit the device. The improved safety device
consists of a single lever pivotally mounted on the top
of the cage and connected by its inner end with the
hauling rope, and by its outer end to a depending rod
connected at its lower end to the outer end of a spring-
controlled lever pivotally mounted on cage, a wedge slidably
mounted in a housing on the cage and located intermediate
of the conductor guides being pivotally connected to the
lower end of the aforesaid depending rod, a stop being
provided on the back of the cage to engage the tail end
of the wedge to assist in maintaining the same out of
contact with the conductor in normal conditions.

Concessions to Deputies in Lancashire and Cheshire.—
A joint conference of the committees of the Lancashire
and Cheshire Coal Owners’ Association and the Lancashire
and Cheshire Colliery Deputies’ Association was held on
Saturday at the Wigan office of Sir Thomas R. Ratcliffe-
Ellis, the secretary to the Coal Owners’ Association. It
was decided that the war bonus of 18 per cent, should
be paid on the present day wage rate of 9s. 9d. Pre-
viously, with the exception of a few isolated instances,
it was paid on the basis of the day wage of 8s. 9d. The
request of the organised colliery deputies for an annual
holiday with full pay was also conceded, the coal owners
agreeing to grant an annual seven days’ holiday with
wages, the condition being that deputies granted the
holiday leave shall have worked for the colliery firm
granting the holidays a full twelve months. It was de-
cided that the Sunday night shift should be one hour
shorter than the ordinary week night shift. The coal
owners also agreed to adopt the system of the weekly
contract, so that in future a week’s notice will be neces-
sary from either side in the case of termination of service.
The claim of the colliery deputies for representation on
the pit committees was further allowed, the coal owners
agreeing to recommend that at. least one colliery deputy
should sit on each pit committee. These concessions
agreed upon by the joint conference are subject to con-
firmation by the general body of members of both the
Coal Owners’ and the Colliery Deputies’ associations.

NEW PATENTS CONNECTED WITH THE
COAL AND IRON TRADES.

Applications for Patents.

October 21 to 26 (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.]

Babcock and Wilcox. Grabs. (17307)

Bannister, F. M. Pumping installations. (17460)

Baumann, K., and British Westinghouse Electric and
Manufacturing Company. Axial flow steam turbines.
(17267)

Blair, D. R., and Clapp, H. B. Manufacture of iron and
steel. (17509)

Bolliger, A. High-tension continuous current machine.
(17245)

Brush Electrical Engineering Company, and Chilton, W.
Combined turbines and electric generators, etc.
(17341)

Brush Electrical Engineering Company and Chilton, W.
Turbine and electrical generator plants. (17342)

Chomier, L. Miners’ lamps. (17337)

Clements, H. Liquid fuel burners, boiler, etc., furnaces.
(17410)

Colebrook, F. C. T. Rotary engines, pumps, blowers, fluid
power transmitters, etc. (17261)

Davis, C. J. B. Internal combustion engines, steam
engines, and air compressors. (17451)

Evans, A. C. Means for coupling together and hauling
train of colliery trams. (17371)

Globe Pneumatic Engineering Company and Johnston, J.

Rotary compressors or exhausters. (17467)

Hall, I. Smoke-consuming furnaces. (17153)

Hollick, F. W. Grabs. (17307)

Howe, R. Internal combustion engines, etc. (17478)

Kimber, H. G. Hydrocarbon engines. (17381)

Langdon, A. G. Rotary pump. (17197)

Mirrlees, Bickerton and Day Limited. Hydrocarbon
engines. (17381)

Rippingille, F. S. Gravity conveyors or runways. (17247)
Russell, E. Internal combustion engines. (17135)

Soc. Anonima, F.I.A.T. Internal combustion engines.
(17312)

Soc. Franco-Beige de Fours a Coke. Heat recuperators
for air or gas. (17388)

Stott, O. Rotary blower or air compressor, applicable
also as a rotary pump for air, etc., and liquids.
(17140)

Windeler, G. E. Hydrocarbon engines. (17381)

Young, A. Machine for generation of electric currents,

■ also applicable as a motor. (17319)

Complete Specifications Accepted.

(To be published on November 14.)

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

1917.

13697. McClelland, T. Method of and means for electri-
cally producing a gas suitable for use in internal
combustion engines and for other purposes.
(119885)

14925. Giddings, J. L. Elevator. (119898)

15134. Bradley, A. Retorts for distilling, carbonising,
roasting and the like of coal, carbonaceous and
other materials. (119911)

15223. James, D. Rotary pumps. (119915)

16112. Plegat, A. J. Elastic fluid engines. (112767)

17224. Lucas, H., Breeden, C. L., and Cape, H. L.

Dynamo-electric machines. (119942)

17585. Chinese-American Company. Internal combustion
engines. (112930)

18836. Mavor and Coulson, and Moore, M. S. Cutter disc
machines for use in mining coal and other
minerals. (119954)

1918.

1140. Thomas, H. S., and Davies, W. R. Appliances
used in the manufacture of tin plates or sheets
and other like metal-coated plates or sheets.
(119969)

2372. Westwood, J. W. Treatment of heavy fuel oils
preparatory to burning. (119977)

4370. Restucci, G. Devices for superheating steam.
(119989)

10047. Aktiebolaget Atlas Diesel, and Andersson, G.
Pneumatic rock-drilling machines. (120010)

10206. Thuman, F. (Evans, O. B.). Process of burning
solid fuel. (120011)

15336. James, D. Rotary pumps. (120025)

Complete Specifications open to Public Inspection Before
Acceptance.

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

1918.

8273. Bockman, O. C. Electric induction furnaces.
(120030)

9534. Trefileries et Laminoirs du Havre, Anciens Etab-
Rugles et la Canalisation Electrique Reunis and
Roudy, C. Furnaces. (120031)

13747. Westinghouse Electric and Manufacturing Com-
pany. Turbine. (120038)

14177. Stein et Cie, C.M. Regenerative furnaces. (120039)

PUBLICATIONS RECEIVED.

Transactions of the North East Coast Institution of Engi-
neers and Shipbuilders (Vol. 34, Pt. 6), October 1918
(Newcastle-upon-Tyne: Published by the Institution,
Bolbec Hall), price 7s. 6d. net; The North of England
Institute of fining and Mechanical Engineers—Annual
Report of the Council and Accounts for the Year 1917-
1918 (Newcastle-upon-Tyne: Published by the Insti-
tute), issued October 1918, price 5s.; The Institution
of Mining and Metallurgy Bulletin No. 169 (published
by the Institution of Mining and Metallurgy, 1, Fins-
bury Circus, E.C. 2); The Beama Journal” (Vol. 4,
No. 4), October 1918 (London : King’s House, Kings-
way, W.C. 2), price Is. het; Union of South Africa—
Department of Mines and Industries: Annual Report
of the Government Mining Engineer for the Calendar
Year ended December 31, 1917, price 10s. 6d.; United
States Public Health Service—Treasury Department:
Hygienic Laboratory Bulletin No. Ill; Journal of the
Western Society of Engineers (Vol. 23, No. 2), March
1918, 50 cents a single number.