THE COLLIERY GUARDIAN.	February 2, 1917.

ABSTRACTS OF PATENT SPECIFICATIONS
RECENTLY ACCEPTED.

13796 (1915). Improvements Relating to Presses Applic-
able for the Production of Briquettes and for other Purposes.
E. R. Sutcliffe, of 93, Church-street, Leigh, Lancashiie; and
Pure. Coal Briquettes Limited, of Colum-buildings, Mount
Stuart-square, Cardiff.—Relates to the operation of presses,
and has for its object to effect the operation at high speed of
presses intended for the application of high pressures in the.
production of briquettes under high pressure from coal or
other carbonaceous substances without a binder. •- Rigs. 1
and 2 show in elevation and plan respectively the apparatus
a.s applied to a briquetting press (Patent Application No.
15601/15)* The apparatus comprises two steam cylinders
a, b, in axial line, the first cylinder a being of small diameter
and the second b of larger diameter. The first cylinder a is
adapted for the admission of steam at the rear only, so that
the forward end of the cylinder may be open, but it is pre-
ferred that the forward end a1 may be enlarged and provided
with a. flange a2 by which the small cylinder may be secured
to the large cylinder. It is also preferred to provide the rear
end of the large cylinder b with, a hollow cover pla.te b1,
through which the common piston rod c of the cylinders a, b
passes in a stuffing gland b2. The flange a2 on the enlarged
front end of a may be secured to the cover plate b1 at the
rear end of b, whilst a. similar hollow cover plate b3 may be
provided at the front end of the large steam cylinder, a suit-
able stuffing gland 64 being provided through which the rod c
may pass. The piston c1 of the cylinder a i.s secured at the
end of the. piston rod c by means of a nut c3, while the piston
c2 is mounted upon the rod c between an integral boss c4 upon
one side, and a nut c5 upon the other. A recess 5s;may be
provided in the cover plate M at the rear of the large steam
cylinder b, for the reception of the nut c5 on the piston assum-
ing its rearmost position. The plunger e of the hydraulic
actuating pump f for actuating the press is connected to or
farmed integral with the piston rod c aforesaid, as, for
example, by means of the connecting part e1. The small
steam cylinder a is provided at the rear end with a cover

FI8-.2.

Fif.l.

plate, a3, and with inlet and exhaust ports a4 one behind the
other. An inlet valve i and an exhaust valve, i1 are pro-
vided within a suitable valve casing, and means are provided
for the positive operation of the valves. The reference i1 is
applied to the inlet valve i. The valves i and i1 are mounted
within a. common integral casing i2, divided into two com-
partments by means of a vertical partition i3. The.inlet
valve i is mounted in one compartment with which is con-
nected the steam inlet pipe p, while, the exhaust valve, i1 is
mounted in the other with which is connected the exhaust
pipe u. The main steam inlet for the respective, cylinders
a and b is centrally disposed nt v, and’is connected with a
fitting to which the steam pipes p are connected upon each
side, and by which steam is always admitted into the back
end of the cylinder b through the port b6, while at the
front end of the large cylinder b inlet and exhaust ports b7
are respectively provided one port behind the other, by which
steam may be admitted to or exhausted from the front end of
the cylinder. The inlet valve o and the exhaust valve o1 at
the front end of the large steam cylinder b are positively
operated. The reference o1 is applied to the inlet valve o.
These valves may be mounted within a common .integral
casing o2, which is divided into two compartments by means
of a partition o3. Within one of these compartments the
inlet valve, o is mounted, steam passing into that compart-
ment through the inlet pipe p which communicates with it.
The other compartment has the exhaust valve o1 mounted
within it, and communicates with the exhaust pipe u1. The
ports b6 and b7 are. set in such position that a cushioning
space is formed at the respective ends of the cylinder b, end
a groove or grooves w are provided for the outlet of the con-
fined steam.. (Four claims.)

102827. Improvements in Steam Superheaters for Firetube
Boilers. J. G-.. Robinson, of Mere Bank, Fairfield, Man-
chester.—Consists in improvements in 'and relating to steam
superheaters for. fire tube boilers, and relates more particu-
larly to fire tube superheaters of the kind, in which a suitable
number of superheater elements or pipes are employed,, each
element extending into two or more fire tubes of the boiler.
The drawing is a front elevation, partly sectional, as viewed
through the smokebox doorway, of a superheater. 1 is the
smokebox shell, 2 the smokebox tube plate, and 3 the smoke
or fire tubes; 5 is a flanged T-pipe connected with the nutlet
end of the. saturated steam pipe leading from the steam space
of the boiler. 6 and 7 are headers, each consisting of a simple
box divided into two steam chambers by a transverse parti-
tion 6B, 7a ; the upper and lower chambers 8 and 9 of the
header 6 are respectively a saturated steam chamber and a
superheated steam chamber, and the upper and lower cham-
bers 10 and 11 of the header 7 are respectively a superheated
steam chamber and a. saturated steam chamber. Channels
12 and 13 are provided in the casting of the header 7; the
channel 12 leading to the saturated steam chamber 11,
extends along the rear wall of the superheated steam chamber
10,;.and the. channel 13 leading from the superheated steam
chamber 10 extends downwardiv (to the desired extent) along .
the front wall of the saturated steam chamber 11. The
channel 12 passes over the top of the chamber 10, and termi-
nates at its upper end in a tubular extension provided with a
flange 14, to which the flanged branch or elbow pipes 15 are
connected, these branch pipes being also connected to T-pipe
5. The channel 13 terminates in a port 13 a at a flange 16,
to which the steam pine leading to the cylinder valve chest
of the engine is secured. 17 is a tubular extension communi- •
eating with the top of the saturated steam chamber 8 of the
header 6, and 18 is a flange on the extension 17; the flanged
branch pipe 19 is connected at one end with the extension 17,
and at its other end with the T-pipe 5. 20 is a tubular exten-

sion communicating with a port in the. front wa.ll of the
chamber 9; and 21 is a flange on said extension. 22 are cover
plates removably secured on the outer sides of each header,
23 being flanges on the header walls to receive the studs and
to provide faces for properly jointing the cover plates 22 to
the. header in a steam tight manner. In the uppermost hori-
zontal row of smoke tubes there, are four elements, each com-
prising a plurality of U-loop portions or pipes extending into

-04

*23!

I3<

II j

two or three adjacent smoke tubes, one such portion to each
smoke tube. The first element, with U-loop pipes, occupying
the. first two smoke tubes, is marked 24a, the second element
in the row 24b, the third element 24°, and the fourth element
24/’1, the-U-loop pipes of each of these elements being con-
nected at their smokebox ends by U-bends 25. (Four
claims.)

102768. Improvements in Dynamo Electric Machines. R.
V. Morse, of Ithaca, New York, U.S.A.—Relates to dynamo
electric machine's of the homopolar or non-com mutating type,,
in which the magnetic field is so arranged that at any instant
all the armature conductors, irrespective of their angular posi-
tion , are moving across a field of magnetic flux of the same
relative sign or direction. Fig. 1 is a side view, partly in
section and partly in elevation, with certain parts broken
away; and fig. 2 is a half end elevation. The armature 1
preferably formed with few or no laminations, is mounted on.
a shaft 2 in the bearings 2", and the armature carries on or
near its periphery two sets or zones of numerous insulated
conductor bars 3, 31. The field structure 4, which surrounds
the armature, and is of substantialily 'the same length, is
provided with an annular recess, in which is seated the excit-
ing field coil 5, which encircles the armature, thus forming
two annular pole faces, one for each armature zone. Upon
the opposite ends of each zone or set of armature conductors
3, 3*, are placed the brushes 6, 61, closely spaced circum-
ferentially around the armature, and the brushes are con-
nected by the stationary conductors 7 extending -across the
pole faces, and with the external leads 8. The coil 5
encircles the armature, as does the field structure 4, in Which
it is embedded. The field coil 5, when energised by a suit-
able current,, produces a magnetic flux, which passes inside
the coil in one direction, and outside the coil in the opposite
direction. This flux enters the armature on one side of the
field coil, -and passes out from the armature on the other
side of the field coil. For example, on the right hand part

VI

of the armature 1 the magnetic flux passes inward from all
sides; while on the left hand part of the armature the mag-
netic flux is outward on all sides. Thus the armature zone
3 will rotate in an -annular field of one polarity, while the
armature zone 31 will rotate an annular field of another
polarity. Each field is of uniform polarity throughout its
entire circumference, so that an armature conductor may
continuously cut a field of constant polarity, permitting uni-
directional current flow. Such a field is colled homopolar,
and a bi-boinopolar field structure uses effectively two homo-
polar fields of opposite polarity in the same magnetic circuit.
Instead of having the armature carry several broad con-
ductors, each permanently connected to its pair of collector
rings, there is a much larger number of narrower armature
conductors 3, 31, which are insulated from each other and
from the armature core. As the armature rotates, the con-
ductors 3 make contact at one end with the brushes 6, 6
successively, while the other end makes contact with the
corresponding brushes 61, 61 successively. The conductors
31 of the other zone make contact with the brushes 6 and 61
of that zone in a similar manner. The brushes 6, 6, which
are slightly separated to prevent short-circuiting through an
armature conductor, form a practically continuous ring or
circle around the armature, as also do the corresponding sets
of brushes 61, 61. . By connecting the brushes through the
stationary conductors 7, or any other suitable external con-
nection, the armature conductors may be connected as many
times In series as there are pairs of brushes. The connec-
tions 7 need not necessarly cross the pole face, but may go
outside the field structure if desired. (Five claims.) .

102831. Improvements in Conveyors for Coaling Ships
and other such Purposes. Gt. Jones, of 25, Church-road,
Manor Park, Essex.—This invention relates to conveyors par-
ticularly designed for coaling ships, but applicable to other
purposes where, coal, grain, or other substance has to be
carried a variable distance 'and deposited in bunkers or other
places. The drawing is a side elevation of two conveyors

and the end of a third. The direction of delivery is from
left to right, and the end of a. conveyor 1 leading, say, from
an eleva,tor, is adapted to deliver the coal or other material to
conveyor 2, which in turn delivers to conveyor 3. Conveyor
2 comprises a framework 4, the two sides of which may
collapse towards each other by connecting them by .lattice
work or equivalent top and bottom framework. This con-
veyor has an endless -belt 5 running over driving pulleys 6
driven from the, suspended\.inotor 7 through flexible shaft 8,
gear 9, and chain 10, the latter positioned within the space
enclosed by the belt. The shaft 8 is connected to an upper
pinion 9* of the gear 9, but can be, attached to the lower
pinion 9b if desired. The conveyor 2 is supported by slings
11 hanging from the. girder or ship’s angle iron 12. The
slings are on wheels to permit- easy longitudinal movement
of the conveyor. The belt 5 runs over idlers preferably com-
prising rollers mounted upon a tube or the like, the axes of
the outermost rollers being inclined for the purpose of bend-
ing the belt in a concave manner as it passes thereover. The;
material is discharged from the belt 5 on to the chute 17
and hopper 17* to the belt of conveyor 3. The driving pulley
6 is made, in two parts, which have, between them a, chain
wheel, the whole being held together by bolts and annular
washers, which serve to keep dust out of the roller bearings.
The tautness of the belt is adjusted by screwed columns of
pillars which carry bearings for a. short shaft, on which are
idle rollers. These screwed pillars have hand wheels, by
which the shaft and its rollers can be raised and lowered.’
The conveyor 3 ma.y be hung from the girder 12 by a modified,
form of hanger. The conveyor is movable lengthwise on the.
girder 12, and in the lateral direction on the section 57, and.
carries a- motor 27 to drive the belt 28 through flexible shaft
29, gear 30, and chain 31. The belt 28 runs over driving
pulley 32, idlers 33, drum 34, and other idlers at 35 and 36.
The motor 27 also drives the worm reduction gear 37, to
which is anchored cable ’38 to provide lengthwise movement
through bar 39 connected to conveyors 2 and 3. A second,
motor 41, which is of the. automatically reversible type,

drives worm gear 42, with drum 4<3 having a cable 44, the
ends of which are anchored to about the extremities of the
crossbar 57. This cable swings the conveyor to and fro
laterally. The forward or delivery end of the. conveyor 3 has
a pivoted flap 46, which, co-acting with the contact 47, closes
an electric circuit, and energises a magnetic clutch at-drum
40, thereby moving the conveyors lengthwise. The flap is
moved by pressure of the heap of coal ar other material, and'
as soon as the conveyors have -moved back clear of the heap
the flap leaves the contact by gravity, the circuit is broken,
and the clutch becomes disengaged, until the heap again
presses upon the flap. (Eight claims.)

102906. Improvements in Tipping Mechanism for Railway
and like Wagons. W. Pattison, of 72, Albert-street, Brad- i
ford, Manchester.—Relates to tipping mechanism for railway
and the like wagons of the kind in which the wagon is tipped
bodily to discharge the contents. Fig. 1 is a side elevation
of a portable form of the invention, with a wagon in position;
fig. 2 is an end view of fig. 1. A portable carriage a is
provided with wheels b to travel along a railway track c.
The carriage has inclined rails d leading to a platform e, upon
which are secured rails / forming a continuation of, or con-
necting, the two sets of inclined rails at either end of the
carriage a. The, platform is supported upon four uprights g,
each pivotally connected at- h to the carriage a. Horizontal
extensions g1 at the uprights g are connected in pairs on each
side of the carriage by links i. At the centre, of each link is
a pin, one of which, enters a slot formed at one end of a
lever k,, while the other enters a slob formed in the. other end
of said lever, which is pivoted at the centre k to the carriage
a. A handle is secured to the lever k or to the axle of the
same, by means of which said lever is moved round its pivot,
which movement is transmitted to the uprights g to- swing the
same clear of the platform e. Crosswise of the carriage a is
a shaft I journalled in brackets, fixed to the framing at
either side. The ram m of an hydraulic jack is secured to
the shaft I, and rotates 'therewith. Said ram is located in the
pressure cylinder under the water reservoir n containing a

plunger Dump worked by a handle. The top of the reservoir
. is provided with an extension having a. transverse screwed
hole to receive a. screwed spindle q, which is rotated by the
handle r. At the opposite end of the. spindle, q a fitting s is
rotatably mounted, and is adapted to engage and grip the end
of the wagon, a thrust, bearing being provided to ensure that
the turning movement of s is not transmitted to the, spindle q.
Upon the fitting s, and eccentrically to the spindle, is formed
an eccentric to receive an eccentric strap, the rod s3 of which
operates the plunger of a power pump. The. suction valve of
this pump communicates with the reservoir n, while the
delivery valve communicates with the pressure, cylinder of
the ram m. The. ram m rotates with the shaft I, but is
capable of axial movement along the same in order that the
spindle q ma.y be adjusted transversely. To effect this axial
movement, the shaft I is formed with a rack I1, with which
meshes a pinion m1 on the ram m, said pinion being turned
by means of me hand wheel m2. Upon the, shaft I is also
: rigidly Secured the, pinion v, which meshes with a, small
’pinion w fixed to the shaft x. The latter is 'also mounted in
brackets, and is provided with a handle, by means of which
the shafts x and I mav be rotated in. order to raise or lower
the jack. To retain the jack in the raised position, a. cross-
bar y may be, passed through holes in the. framing just rear-
wardly of and in contact with the jack. A second jack,
similar to the. first, is mounted at the opposite, end of the
carriage. (Seven claims.)

102918. Improvements Relating to Presses Applicable for
the Production of Briquettes and for other Purposes. E. R.
Sutcliffe, of 93, Church-street, Leigh, Lancashire; and Pure