436

THE COLLIERY GUARDIAN.

February 20, 1914i.

Ji 7201 (1913). Improvements in or relating to Conveyors for
use in Coalmines and Other Places. J. Bowman, of Rosefield,
Gardenside, Uddingston, Lanarkshire, Scotland, and J.
Jackson, of 4, Brackley-villas, Little Hulton, Bolton,
Lancashire.—Refers to that type of conveyor in which there
is a stationary trough composed of connected sections,
within which trough there is reciprocated a series or chain
of scrapers, which extend, for example, about half the length
of the trough. The present invention consists in pro-
viding a stationary trough having a base and approxi-
mately vertical sides, to contain a carrier composed of a
plate or plates extending nearly the width of the trough
but not of the full length thereof, the carrier being
supported by bearers, either fixed within the trough or
attached to the under surface of the said carriers, means
being provided for traversing the carrier from end to end of
the trough and ploughs, scrapers or the like f or discharging
the material from the carrier at a point of delivery. In
carrying the invention into practice the stationary trough
may be composed of a plurality of metal trays having two
vertical sides but without ends, preferably composed of
bent sheet metal, and the open ends of a sufficient number
of these trays to constitute the length of trough required,
are brought into contact with each other and connected
together. Within the trough is located the carrier com-
posed of a plurality of flat metal plates, the sides of which
nearly contact with the vertical sides of the trough, while
the ends of the plates are adjacent to each other, one
horizontally-arranged carrier plate being pivotally con-
nected to the next carrier plate, and so on, by drawbars
located on the under surfaces of the carrier plates, and this
articulated structure is less in length than the trough. . The
drawbars are so connected to each other that they may be
readily detached or separated all as hereafter described.
The carrier plates rest, and are capable of sliding upon,
bearers fixed within the trough or upon the carrier plates
on each side thereof and extending longitudinally, bearers

being sometimes provided at the longitudinal centre of said
carrier plates. The carrier, as has been usual with the type
of conveyor to which this invention relates, is traversed
backwards and forwards along the entire length of the
trough by ropes or chains attached to each end of the
carrier, passing around suitable pulleys, and operated by an
electric motor or other engine ; and means are provided for
discharging the load from the carrier at a point of discharge
during its passage from one end of the trough to the other,
as, for instance, by providing inclined plates or blades at
the point of discharge to deflect the load from the surface
of the carrier plates, and in the present construction one
side or one or more of the trays composing the trough may
be omitted at the point of discharge, while in order to clear
the trough from small coal or dust which passes to the
underside of the carrier, the latter may be provided with
depending scrapers, and the trough formed with apertures
in its base, through which apertures the said dust or small
coal is discharged. Fig. 1 is a transverse section taken
through a trough and carrier constructed according to the
invention, the section being on the plane represented by the
line X—Y at fig. 3. Fig. 2 is a plan view of a short length
of the trough and carrier showing the joining of two of the
metal tray composing the trough, and also illustrating the
junction of two of the carrier plates. Fig. 3 shows partly
in longitudinal section and partly in elevation the trough
and carrier plates. Fig. 4 is a plan view illustrating a
modified construction of the connection between the carrier
plates. Fig. 5 is a view similar to fig. 1, showing in trans-
verse section an arrangement of trough and carrier in
which the carrier plates are provided with skids or bearers,
and also with scrapers. (Ten claims.)

8392 (1913). Hydraulic or Pneumatic Wedge for Mining
and the like. J. H. Lewis, of 7 Page-street, Swansea, South
Wales.—Relates to an improved construction of wedge
of the kind which is operated by hydraulic or pneumatic
power after the wedge has been inserted into a hole bored
for the purpose by pneumatic or other means, in such
manner that the coal, rock, or the like is brought down by
the expansion of the operating parts of the wedge under
the action of the hydraulic or pneumatic pressure, acting
through a series of rams which are in communication with
a longitudinal hole through which the hydraulic medium

is conveyed to the rams. The invention consists more
particularly of an improved construction of the ram
fittings and their cylinders, and other detail features. The
accompanying drawing is a longitudinal section of one form.
The body 1 of the wedge, which is preferably made of cast
steel, is of cylindrical or tubular form, of a suitable length,
the front end 2 being pointed, and the back end provided
with a high-pressure union 3 for attachment of a long
flexible metallic hose 4 for conveying the water or air under
pressure to a longitudinal hole 5 in the wedge, the hydraulic

or air pressure being obtained preferably by a portable
hydraulic or air test pump, or from a suitable main source
of supply. The body portion 1 of the wedge is formed with
a number of screw-threaded holes 7 transversely to the
central longitudinal hole 5, say six or less, as the case may
be, on each side of the latter, these transverse holes forming
Beatings for screw-threaded bushes or liners 8 which serve
as cylinders for plungers 9, which are provided with leather
hydraulic cups 10 fixed to the plungers 9 by plates or
screws 11. Lifting bars 12 are arranged saddlewise across
the body portion on two sides, these bars 12 being con-
nected to each plunger or piston 9 so as to be operated
thereby by screw-threaded extension pieces 13 from the
pistons, and passing through the bars 12 and secured by
nuts 14 in such a manner that should any of the pistons
break, the broken ones can be easily replaced without
having to renew the whole. An auxiliary bar, or bars, 15 is
or are also provided which fits loosely over the lifting bars 12
for the purpose of givingan increased lift if the main bars 12
fail to bring down the coal when each plunger 9 is fully
extended. The auxiliary bar 15 (or bars) is fitted on by
first allowing the pressure to fall away from the internal
part by means of a release port 16 on or between the pump 6
and the wedge, which can be operated for reducing the
pressure, the release port being so arranged that upon the
breakaway of the coal or stone it can be opened and the
water which is in the wedge c n be returned direct to the
tank, so that the same water can be re-used indefinitely.
In order to prevent the plungers 9 from being force}! out
entirely from the bushes 8 when the bars are full out and
the plungers 9 fully extended, the usual outlet release 17, or
releases, is or are arranged in conjunction with a port or
ports 18 leading out from the threaded bushes 8, which ports
are uncovered when the pistons or plungers 9 reach a
pre-arranged limit of extension, thus providing a safety
device. (Four claims.)

10883 (1913) Improvements in Roller and Ring Mills for
Grinding, Crushing, Pulverising and the like. J. Y. Johnson,
of 47, Lincoln’s Inn-fields, London (communicated from
abroad by the Firm Gebriider Pfeiffer, of Kaiserlautern,
Germany).—Relates to improvements in roller and ring mills
for grinding, crushing, pulverising and the like, of the kind
in which the grinding ring to be rotated is carried and
driven by inner grinding rolls, which must be so supported
that all shocks produced in the interior are, as far as
possible, entirely absorbed. According to the invention,
plate springs are used as supporting members for the rolls

777

and their bearings, so that the need of guiding bodies or
oscillating levers of any kind is obviated. The plate springs
supporting the grinding rolls are secured at one end to the
side wall of the mill, the other ends of the plate springs
being capable of displacement so as to allow the rolls to
yield to any shocks that may occur. The accompanying
drawing illustrates examples of how the invention can be
carried into practice. Fig. 1 is a front view, and fig. 2 is a
cross-section of a ring mill; fig. 3 shows a modification.
(Five claims.)

23555 (1913). Improvements in or relating to Apparatus for
Quenching Coke. Berlin-Anhaltische Maschmenbau-Aktien-
Gesellschaft, of Reuchlinstrasse 10/17, Berlin, N.W. 87,
Germany.—Relates to apparatus for quenching coke of the
kind set forth in the prior British Patent Specification
No. 9269 cf 1912. According to this invention, all those

parts'of the walls of the coke tank below the level of the
quenching liquid, come into immediate contact therewith
directly the charging of the coke tank commences, and are
cooled in an efficient manner. To that end, the coke-
quenching apparatus is modified by omitting the pocket-
like chambers, in such a manner that on the immersion of

the coke tank the quenching liquid can directly enter its
bottom conduit through lateral openings as soon as the
valves controlling these openings have been automatically
opened by striking stops. The lateral openings of the
bottom conduit are at the same time intended to discharge
the excess of quenching liquid on the coke tank being
raised after the quenching is completed. A construction of
coke-quenching apparatus according to this invention is
illustrated in central vertical section in the accompanying
drawing. (One claim.)

23805 (1913). Improvements in Pulverising Apparatus.
A. Granger, residing at corner of 4th Street and Duncan-
road, Bulawayo, Rhodesia.—Has reference to apparatus for
pulverising ore, clinker and other hard material. Apparatus,
according to this invention, is shown in. the accompanying
drawings, in which fig. 1 is a vertical section on the line
A—A fig. 2; and fig. 2 is a front view partly in section. In
operation ore is fed into the feed-slot 5, water being also
added in the case of wet crushing. Upon the shaft being
rotated a disc, which is in the position of that shown in the

SI-
32'
30-
28 =

front of fig. 1, and at the right-hand of fig. 2, is rotated
eccentrically with the shaft 6, and after making a half-
revolution—-when its slot again becomes substantially
vertical—it drops upon and crushes the ore lying on the die.
After each drop the continued rotation causes the disc to
travel over the forward part of the face of the die 21, and
so grind the ore lying thereon. Whilst being so ground the
material is also swept up towards the discharge opening 3,
and is thus sxpelled from the mortar box as rapidly as
possible. O wing to their respective slots 8 being at right
angles, the two discs drop and grind alternately with one
another. (Six claims.)

26312 (1912). Improvements in Portable Breathing Devices for
use in Impure Air. G. A. Morgan, residing at 52027, Harlem-
avenue, Cleveland, Cuyahoga County, Ohio, and J. W. Wills,
residing at No. 2323, Central-avenue, Cleveland, Cuyahoga
County, Ohio, U.S.A.—Comprises a hood to be placed over
the head of the wearer, from which depends a tube provided
with an inlet opening for air, and the tube is long enough



G

O

to enter a layer of air underneath the dense smoke within
the hall or apartment entered by the fireman, and which
can be placed beyond the reach of gaseous fumes or dust,
and through which pure or much purer air can be furnished
to the user Fig. 1 is a side elevation; fig. 5 is a front
elevation of the hood enlarged; fig. 6 is a vertical section
of outlet valve and exhaust pipe. (Five claims.)

28782 (1912). Improvements in Safety Means for Pit Shaft
and other Sc 'ffold Workers when such Accidentally Slip at
Work. A. Hanley, 21, Alpha-xoad, Bristol.—Consists of a
combination of leather or other flexible parts loosely con-
nected by a link and a chain (or rope) with hooks at one or
each end. The parts fit on the workman’s legs, shoulders,
and waist, and the rope or chain is attached to a pole pit
guide chain, or other secure fixture, the other end or hook
being attached to the aforesaid link. If the workman slips

FIG.I.	FIC.2. , FIG.3. FIG.4

P4 (fl

R3

D4

from his working position he is held in a position of safety.
Parts R3, E, H3, and clip F are novel. Ring or link Ra,
figs. 1, 2, 5, 6, 7 and 8, loosely connects shoulder parts C ,
waist part B, and leg parts D3, and may have hook Hx
fixedly attached to it, as at fig. 5. Part E, fig. 7 (section),
and fig. 8 (back view) is secured to the part B, and prevents
too much movement of the parts 0, D if workman slips side-
ways. Hook H3 fig. 4 enables pole workers to attach chain A
better to pole cross pieces or ledgelike supports. Clip F