1240

THE COLLIERY GUARDIAN.

December 11, 1914.

ABSTRACTS OF PATENT SPECIFICATIONS
RECENTLY ACCEPTED.

7520 (1914). Improvements in or Relating to Centrifugal
Exhaust Fans and Pressure Producing Fans or Blowers. E.
Allday, managing director of Alldays and Onions Pneumatic
Engineering Company Limited, of Great Western Works,
Sydenham-road, Birmingham, Warwickshire, and T. H.
Plummer, Great Western Works aforesaid.—The centrifugal
exhaust fans and pressure producing fans or blowers are
arranged in juxtaposition or side by side, and preferably
on the same shaft, and in the latter case there is provided a
flange on the inner side of the exhaust fan casing to over-
hang the inner half or part of the runner so as to catch a
part of the dust laden air and waste gases delivered by the

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runner. Further, there are provided on the inner side of the
exhaust fan casing curved guiding webs or vanes so as to
lead the air trapped by the overhanging flange described to
the axial inlet of the pressure fan casing, the runner of
which brings the dust laden air or waste gases up to the
requisite pressure. The inlet of the exhaust fan is con-
nected to the main or conduit, into which the fumes, waste
gases, and dust laden air are delivered or are drawn by the
suction in the said conduit, and the outlet of the pressure
fan or blower is connected to a main, by which the blast
for smiths’ hearths and furnaces or the like is conveyed.
Fig. 1 of the accompanying drawing is a diagrammatic illus-
tration of the arrangement for carrying the said invention
into effect; fig. 2 is a view at right angles to fig. 1. (Two
claims.)

14895 (1914). Improvements in or Relating to Axle Boxes
and Other Bearings. J. B. Beadman, of 2, West View-
terrace, Keighley, Yorkshire, and H. J. Macklin, of 49,
Lightburn-road, Ulverston, Lancashire.—Relates to improve-
ments in the axle boxes claimed and illustrated in the com-
plete specification of British Letters Patent, dated Oct. 31,
1911, under No. 24109, and used for railway wagons and
other vehicles. The object is to construct a railway or other
wagon axle box with means for separating the water auto-
matically from the oil and conducting it into a special
chamber provided with partitions over which the water can
escape before passing to the outlet, or providing a special
chamber with an outlet, thereby preventing the water, as
far as possible, becoming again mixed with the oil. Accord-
ing to the invention, the water chamber is either formed in
the axle box itself or is fixed to the bottom of the axle box
and secured in position by any suitable means, and a com-
munication is made by means of holes or passages both with
the oil chamber , and with the shield groove, which, in this
invention, is divided into three compartments by means of
a pair of upright partitions, the central compartment being



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smaller than the other two, and in direct communication
with the oil chamber. In some cases the central chamber
is provided with an outlet for the water, and in other cases
the larger compartments—arranged respectively on each side
of the central chamber, are provided with the outlet. The
outlet is generally made to taper outwards so as to prevent
it becoming clogged with dust or dirt. Fig. 1 is a sectional
elevation of an axle box with a detachable cover fixed
thereto, and with a water separating chamber attached to
its under surface, and provided with holes which communi-
cate respectively with the oil chamber and the shield guide,
and with a water outlet also in communication with the
shield guide; fig. 2 is a section on line A, B, fig. 1; fig. 3
is a sectional elevation of an axle box with a tapering well
and a recess formed in the lower part of the axle box with
the communication between the oil chamber and the shield
guide and with a water outlet; fig. 4 is a sectional elevation
on line C D, fig. 3. (Two claims.)

21374 (1913). Improvements in or Relating to Means for
Collecting and Discharging Solid Matter when Pumping
Liquids Containing Same. R. H. L. Pennell, of Gebel El

Asfar Farm, Khanka, Egypt, and J. Orten-Boving, of 9J,
Union-court, Old Broad-street, London.—The object is to
provide a trap which will collect the silt or solid matter
before it enters the pump, and to transfer the same silt or
solid matter into the delivery pipe of the pump, clear liquid
only being allowed to pass through the pump. A sedimenta-
tion chamber or trap is provided, arranged either for periodic







or continuous working, through which trap the liquid has to
pass on its way to the pump, and through which it has to
pass when it is delivered by the pump. Fig. 1 is a diagram-
matic plan showing a trap adapted for use when pumping
intermittently; fig. 2 is a plan thereof; fig. 3 is a diagram-
matic plan showing a rotary trap adapted for use when
pumping continuously; fig. 4 is an elevation thereof; fig. 5
is a sectional elevation of the trap; fig. 6 is a cross section
thereof. (One claim.)

23878 (1913). Improvements in Governors for Winding
Engines and Apparatus in Connection Therewith for the
Prevention of Overwinding. R. J. .Worth, of Longfield,
Norton-on-Tees, Durham.—Relates to centrifugal, governors
for winding engines and the special construction of such
governors to enable them to retain control of the engine
from full speed until the engine is nearly stopped, and to
attachments to such governors to stop the engine entirely
should the engineman attempt to raise the cage beyond the
allowed height or to start in the wrong direction. A
governor constructed according to the invention has a cross
head fixed to the governing spindle with projecting arms,
to which are hinged the links carrying the governor balls
and a sliding sleeve with arms projecting to the same dis-
tance, which are connected by other shorter links to the
governor balls. The projection of these arms is much
greater than is usual with governors intended to control an
engine at one speed only, and should be such that the balls
hang vertically when not revolving. Between the fixed
cross head and the movable sleeve there is a spiral spring,
the compression of which can be adjusted by nuts on either
the cross head or the sleeve, as most convenient. The
vertical motion of the governor sleeve works a lever, here-
inafter called the governor lever, in the ordinary manner;
the outer end of this lever is used to operate the throttle
valve and brake valve of the engine. The fulcrum of the
governor lever is carried on a movable rod, which rod is
movable vertically as required by a roller or pin working in
a specially shaped groove on a drum driven by positive gear



at less than one revolution per wind. At the point at which
reduction of speed should commence the scroll acts to draw
down the fulcrum of the governor lever. Should the engine-
man be reducing speed at the rate determined by this scroll
the fall of the governor sleeve is exactly proportionate to the
rate at which the fulcrum of the lever is being drawn down,
and the outer end of the governor lever therefore remains
stationary and has no effect on the speed of the engine; but
should the predetermined speed be exceeded at any period
during the pulling up, the governor sleeve will be above its
proper position, and the continued descent of the fulcrum
will bring down the outer end of the governor lever, thereby
shutting off steam and applying the brake as may be
required to bring the engine down to its correct speed.
During die full speed part of the wind, the fulcrum of the
governor lever remains stationary, and a slight increase of
speed causes the rise of the governor sleeve, and thereby the
fall of the outer end of the governor lever, thus shutting off
steam and applying the brake as may be required. Thus
the governor controls the speed of the engine from the time
it attains full speed until the lowest speed is reached, at
which the governor balls will move outwards under the
action of centrifugal force, and with this special construction
of governor this slowest speed of control may be as little as
one-eighth of the full speed, but it is sufficient to ensure full
safety if the governor can reduce the speed of the cage to
10 ft. per second. On the same drum as that carrying the
scroll for moving the fulcrum of the governor lever, or on
another drum fixed, to the same shaft, there are two cams,
one for each direction of rotation, and should the cage be
allowed to pass its allotted height one or other of these
cams comes in contact with a catch which releases a weight,
and the fall of this weight is arranged to lift the rod, which
closes the throttle valve and applies the brake. Where,

however, multiple deck cages are used, and the clearance
between the top of the cage and the head pulley is small,
the knock-off cams are constructed with two steps, one of
which actuates the catch should the top deck be raised above
its proper height, and means are provided whereby the
engineman can move the catch opposite the second step
while he is working the cage between the top and bottom
decks. As with a governor thus constructed it is necessary,
in order to control the engine within allowable limits of
speed, that a proportion of the total motion of the governor
sleeve not exceeding one-fourth for speeds of winding up to
40 ft. per second, and from one-fourth to one-eighth .for
speeds between 40 and 80 ft. per second, shall be sufficient
to shut off the steam and apply the brake, it follows that
this motion is too small in amount and insufficient in power
to operate directly on the throttle valve and brake, and must,
therefore, operate by means of a relay. This relay may be
a servo motor of any known type, but a special mechanical
relay as hereinafter described is preferred. In constructing
such a mechanical relay a rod, called the actuating rod, is
hinged so as to be capable of horizontal motion, and is con-
nected to the outer end of the governor lever so as to receive
the vertical motion imparted by the above-described governor
gear; when the engine is running at its correct speed the
lower end of the actuating rod is just clear of teeth on a
drum driven by the engine. Any increase in speed or any
drawing down of the fulcrum of the governor lever without
corresponding decrease in speed brings the end of this rod
in contact with the teeth, and gives to it a horizontal motion
in one direction or the other according to which direction
the engine is running. But as the motion to work the
throttle valve and brake must always be in one direction, and
as owing to the actuating rod and the teeth on the drum
moving in curves, the horizontal motion imparted to the
actuating rod is large for the first unit of its vertical motion,
and decreases with each subsequent unit of vertical motion,
it is necessary to introduce a compensating arrangement as
follows :—A link is attached to the actuating rod near its
lower end, which works a rack or sector gearing with a spur
pinion; fixed to this pinion is a lever, which hangs verti-
cally when the actuating rod is vertical, and the end of this
lever is connected to the rod which works the throttle valve
and brake. Thus any horizontal motion of the actuating rod
in either direction turns the lever from its vertical position,
thereby drawing up the rod which works the throttle valve
and brake, and as the motion imparted to this rod is small
for the first unit of. its angular motion, and increases for
each subsequent unit of such motion, this corrects the oppo-
site irregularity in the motion of the actuating rod, and
therefore the motion actually transmitted to the throttle
valve and brake is approximately proportionate to the motion
of the outer end of the governor lever, but increased by as
much as 20 times if required, and the power is only limited
by the strength of the teeth on the drum and of the gear
which drives it. Fig. 1 is a side elevation; fig. 2 is a front
elevation; fig. 3 is a back elevation of the lower part only;
fig. 4 is a part side elevation showing a modified arrange-
ment of the governor lever; figs. 5	and 6 show details	of the

knock off cams when adapted for	stopping the	cage at	two

different heights. (Four claims.)

24285 (1913). Improvements	in Haulage	Clips.	A.

Dootson, of 23, Adelaide-street, Hebden Bridge, Yorkshire.
—Relates to clips or gripping devices for laying hold of
travelling ropes or cables, so as to couple thereto colliery
tubs or trucks or other vehicles for purposes well understood.
These clips are of the type having a fixed and movable jaw,
the latter being movable upon or over the former by means
of a lever having a projecting part or cam surface by which
the haulage rope is gripped between them, guiding parts
being .employed to cause the movable jaw to move in a
straight path or approximately at right angles to the axis
of the haulage rope. The invention consists in constructing
the jaws of such shapes as will enable certain parts of the
inner one to take within guiding flanges formed on the other
or outer one in known manner, with the parts for contact
with the rope occupying staggered positions. The inner jaw
has an opening of somewhat triangular shape to receive a
projecting elongated cam piece extending laterally from a
hand lever (with which it is integrally formed) so that when
these parts are assembled each in its respective position, the
end of the cam piece will snugly fit into the properly shaped

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apex of the triangular opening, thus while permitting ample
motion for the jaws to be separated when receiving the rope,
too much motion of said jaws is prevented, and the motion
of the hand lever is limited to enable an appropriate spring
actuated retaining ratchet to be used in connection with
ratchet teeth formed on the edge of the outer jaw. The
jaws are also provided with lateral projections to facilitate
the passage of same over the guide or haulage pulleys, as
well as to limit the motions of the rope relatively thereto.
Fig. 1 is a side elevation of a haulage clip constructed in
accordance with the invention; fig. 2 is a sectional plan
thereof on line A—B; fig. 3 is a sectional end elevation of
said clip, taken on line C—D of fig. 1; fig. 4 is a front
elevation illustrating a modification; fig. 5 is a sectional plan
on line E—F of fig. 4; fig. 6 is a drawing in detail of a
part. (Four claims.)

25291 (1913). Improvement in Apparatus for Preparing,
and Sorting Comminuted or Powdered Coal or Other Fuel.
T. M. Coyle, of 4206, Juniata-street, St. Louis, Missouri,