96 100.output

* GB780095 (A)
Description: GB780095 (A) ? 1957-07-31
Improvements in or connected with friction couplings
Description of GB780095 (A)
PATENT SPECIFICATION
Inventor: JOHN ANDREW FISHLEIGH Date of filing Complete Specification:
Feb. 23, 1956.
( t} Application Date: Feb. 23, 1955. p' Complete Specification
Published: July 31, 1957.
Index at acceptance:-Class 80(2), S2(A3A: X).
International Classification:-FO6d.
lo. 5432/55.
COMPLETE SPECIFICATION
Improvements in or Connected with Friction Couplings We, J. A.
FISHLEIGH & SON LIMITED, Of North Fordlands, Northaam, Bideford,
Devonshire, a British Company, do hereby declare the inventions for
which we pray that a patent may be granted to us, and the method by
which it is to be performed, to be particularly described in and by
the following statement: -
This invention relates to a friction coupling, such as for use in a
baling machine or any other power driven machine, and has for its
object to provide a friction coupling which gives an audible alarm
when the coupling is slipping.
According to this invention, in a friction coupling incorporating two
plates or members, clutch plates or discs and a fabric-lined "slip"
plate or disc between the members, the members and clutch plates or
discs being urged together by spring pressure, an audible alarm is
incorporated and means provided so that when the friction coupling
slips, the "slip" plate or disc revolves and actuates the audible
alarm.
The invention will be dearly understood from the following description
aided by the accompanying drawings, in which:Figure 1 is sectional
elevation and Figure 2 an end view showing one example. Figure 3 is a
sectional elevation showing another example, and Figure 4 a detail
view.
In the example shown in Figures 1 and 2, the coupling comprises two
members in the form of discs 1, 2. One member 2 is formed with a
centre socket 3 having a splined or round bore for engaging on the
splined or round shaft of a baler or other machine in use, a lock
screw 4 or key being provided. The other member 1 is provided with a
rotatably mounted centre or hub 5 having a projecting splined shaft 6
on which a splined or round shaft of a universal joint from the
tractor or other power take off can be connected.
In each member 1, 2 is a ring of holes through which are passed bolts
7, the heads of the bolts 7 are outside one member 2 and on each bolt
7 and outside the member 1 is a (Price 3s. 6d.1 helical spring 8 with
a nut 9 so that the members 1, 2 are urged towards each other. Between
the members 1, 2 are two steel clutch plates 10, 11 in the form of
discs and' between these two plates 10, 11 are fibre or like discs 50
12, 13 riveted to a flange 14 of the hub 5, the springs 8 urging the
members 1, 2 and plates 10, 11 onto the fibre or like discs 12, 13 so
that the whole coupling turns with the rotation of the power drive
under frictional grip 55 between the fibre or like discs 12, 13 and
the clutch plates 10, 11, but if an obstruction occurs in the machine

being driven, the fibre discs 12, 13 slip and damage is avoided.
The steel plates 10, 11 are coupled to the 60 members 1, 2 by the
bolts 7 passing through half-circular recesses in the peripheries oil
the plates 10, 11.
On the outside of one member 2 is secured a bell 15 and on the other
side of the member 65 2 is rotatably mounted a wheel 16 set against
the flange 14, the wheel through a shaft actuating a striker 17 inside
the bell 15 so that if an obstruction occurs in the machine being
driven, the flange 14 or "slip" plate and fibre discs 70 12, 13 slip
and damage is prevented, the flange 14 also rotates the wheel 16
actuating the striker 17 and gives an audible alarm on the bell 15.
In the example shown in Figures 3 and 4, 75 the periphery of the
flange or slip plate 14 is formed with ratchet teeth 18 and on one
side of the bolts 7 is secured a spring 19, the free end of which
engages on the flange 14 so that if the flange 14 rotates in relation
to the 80 members 1, 2 an audible clicking sound is produced by the
end of the spring 19 riding over the ratchet teeth 18. More than one
spring can be employed.
Although the invention has been described 85 as applied to a baler it
should be understood that the alarm scan be applied to other friction
couplings.
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* GB780096 (A)
Description: GB780096 (A) ? 1957-07-31
Improvements in or relating to methods of manufacturing cocks for
controlling the flow of fluids
A high quality text as facsimile in your desired language may be available
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The EPO does not accept any responsibility for the accuracy of data
and information originating from other authorities than the EPO; in
particular, the EPO does not guarantee that they are complete,
up-to-date or fit for specific purposes.
780,096 Date of Application -and filing Complete Specification: March
7, 1955,.
No. 6685/55.
Application made in France.on March 6, 1954.
Complete Specification Published: July 31, 1957.

Index at acceptance:-Class 83(3), K(2A4J: 7B8X: 7BX: 8).
IntenatiQlnal Classification:-B23c.
COMPLETE -SPECIFICATION
Improvements in or relating to methods of Manufacturing Cocks for
Controlling the -Flow of Fluids I, FRANCOIS JUSTIN DEUpS, of -French
Nationality, of 8 -Rue de la Petite Arche, Paris (16 ), France, do
hereby declare the -invention, for which I pray that a patent may S be
granted to me, and the method by which it is.to be performed, to be
particularly described in and by the following statement:-
This invention relates to methods of manufacturing cocks for
controlling the flow of fluids and- has as its object more
particularly to ensure the fluid tightness of such cocks.
According to the present invention there is provided a method of
manufacturing a seating in a cylindrical shut-off member for a cock,
in which the seating is -generated by one milling operation with the
aid of a hollow cylindrical milling cutter having its teeth disposed
on one end thereof, said member and the milling cutter being moved
relative to each other in such a manner, that a cylinder co-axial with
the member and turning therewith, rolls without sliding on a plane
fixed with respect to the axis of the cutter and parallel to, or
containing, the free ends of the teeth of the miling cutter.
For a better understanding of the invention and the method of carrying
the same into effect, reference will now be made to the accompanying
drawings, in which:Figure 1 is a sectional side -elevation of a
shell-type cock, along the line 21-21 of Figure 2, Figure 2 is a
sectional plan view of the shell-type cock shown in Figure 1, Figure 3
is a sectional plan view to an enlarged scale of the shut-off member
taken along the line 11-1 of Figure 1, and shows a milling cutter,
Figure 4 is a sectional plan-view of another shut-off member, Figure 5
shows a detail of the member of Figure 4.drawn-to a larger scale.
Figure 6 is a sectional plan view of a further shut-off member, Figure
7 shows a detail of the member of [Fnc. 3s. 6d.] -Figure 6 drawn to a
larger scale, and Figure 8 is -a diagramnihatic sectional view of a
milling cutter and a part of a shut-off -member being machined, the
section being 50 taken through the cutter axis and showing
two-different positions of the cutter.
In the drawings like references designate -like parts.
Figures 1 and 2 show the construction for 55 a shell-type cock
-having.a rotatable shut-off member 1 located inside a body 2. When
the cock-is in the closed position between the upstream and the
downstream sides, fluid-tightness is obtained by means of rings 60 of
plastic or similar material 4 (there are two such rings illustrated in
the drawings), situated in seatings 3 of suitable shape formed -in the
shut-off member 1.
The seatings 3 and the natural dimensions 65 -of the rings 4 which are
placed therein (i.e.
the dimensions of the ring before its introduction into the seating)
are such that the rings do not tend to escape from their seatings, and
this is -ensured more especially by 70 making each ring of slightly
small dimensions than those of the seating. The ring is made - to bear
both against the rotatable shut-off member and against the body 2, by
virtue of the fact that the amount by which 75 its projects out of the
seating when the shutoff member is isolated from the body is greater
than the clearance between the shutoff member and the body. The
pressure ex:erted by the rings on the body is always 80 directed
perpendicularly to the relative movement of the ring with respect to
the body at the point in question.
The cock also comprises in a manner known per se supplementary rings 5
which 85 are intended to ensure a sealing effect between the upstream
and downstream sides -of the body and the exterior of the cock, said
-sealing effect being necessary more particularly when the cock is
being manipulated. 90 A plain pin 6 holds the cock in the correct
axial position; and since the cock -shell is cylindrical, the cock
described is balanced (i.e there is no upward force in the member (1))

and only a small pin is necessary to keep it in position.
The seatings are formed by a milling operation similar to the milling
of gears.
Figure 3 shows this method of production.
A hollow cylindrical milling cutter 20 turns about its imaginary
vertical axis 21. The bottom end of the milling cutter 20 has teeth
23, the lower ends of the teeth being defined by a plane 22 which
together with the axis 24 of the shut-off member 1 is perpendicular to
the plane of the figure. In order to carry out the milling operation,
the shut-off member 1 is arranged in a mounting which causes it to
turn about the axis 24. The milling cutter 20 turns about the axis 21
which is perpendicular to the axis 24, and at the same time is
dispfaced bodily sideways, the axis 21 remaining parallel to its
initial position and the lower ends of the teeth remaining in the
plane 22.
The speed of rotation of the shut-off member about its axis 24 is such
that the plane 22 or an adjacent parallel plane rolls without sliding
over a circumference such as with centre 24 which is tangential to
said plane. It will readily be seen that in this manner a seating is
cut whose depth is delimited by the circumference 25.
In fact the cutting edges of the teeth 23 of the milling cutter
generate developments of circles 30-3 i which constitute the lateral
surfaces of the seatings 3; these seatings have, therefore, the form
of gear teeth gaps the bottoms of which are always limited by the
cylinder whose cross-section is the circumference 25.
It will readily be seen that the cutting edge 26 of the teeth of the
milling cutter generates the profile 30, and the cutting edge 27 the
profile 31.
The milling cutter shown in Figure 3 has cylindrical cutting edges,
but of course it is possible to use any other type of cutter, for
instance a milling cutter with conical cutting edges.
As has alreadly been indicated, the rings -4 are mounted with
pre-tension in their seatings. Consequently, they each bear against
the shut-off member 1 especially in the region of those points of
contact between the ring 4 and the member 1 at the tangents common to
the ring and the inner side wall of the seating 3 and drawn from a
point 36 as shown in Figure 3. Said tangents form a cone of angle c.
and it will readily be appreciated that the greater this angle is, the
more strongly will the ring 4 bear against the inside of the seating,
and therefore the better will it remain fast with the shut-off member.
It will be seen, moreover, that the lateral profile of the seating at
the point of contact 65 with the outer limit circumference 34 of the
shut-off member forms an angle fl with the perpendicular to the said
circumference; the value of this angle is so chosen as to prevent any
jamming of the ring when the shut-off 70 member is being operated.
Figure 4 is a sectional view of the shutoff member with a different
profile for the seatings; the developments are replaced by elongated
epicycloidal profiles, and the angle 75 13 has become nil. which is
the most favourable condition for preventing any risk of jamming.
Figure 5 shows, to a larger scale, the profile of the seating of
Figure 4. 80 Figure 6 shows a seating wherein the angle PI has become
negative: Figure 7 shows, to a larger scale, the corresponding
profile.
Ficure 8 indicates how the cutter 20 is employed to form a seating 3
that widens as it 85 deepens. The cutter 20 is shown in two different
positions. In the first position the axis of rotation of the cutter is
at 21A and the plane that is fixed in relation to the axis is shown at
22A. This plane rolls on the 90 cylinder 25A that is concentric with
the member 1. In the second position of the cutter 20, the cutter axis
is at 21B and the plane at 22B. The cutter teeth in the first position
are shown as 23A and in the second 95 position as -23B. During rolling
of the cutter 20, the point A cenerates the curve BC and the edge 26
forms the curve BD. The -edge 27 generates the curve EF and the point
H forms the curve FG. 100 It will be appreciated that the shape of the

section of the seating 3 is largely determined by the value of the
diameter of the cylinder 25A in relation to the diameter of the member
1. 105
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* GB780097 (A)
Description: GB780097 (A) ? 1957-07-31
Improvements in or relating to methods of making edible food products from
peanuts
Date of Application and filing Complete Specification: March 8, 1955.
780,097 No. 6760/55.
6' Complete Specification Published: July 31, 1957.
Index at aoceptance:-Class 49, B1(C:L:V) International
Classification:-A231.
Improvements in or relating to Methods of Making Edible Food Products
from Peanuts We, GEORGE CALIL, a British Subject, residing 42, rue
Blanche, Paris, (Seine), France, and MAURICE GUERNIER, a Citizen of
the French Republic, residing 34, Avenue de New York, Paris, (Seine),
France, do hereby declare the invention, for which we pray that a
patent may be granted to us, and the method by which it is to be
performed, to be particularly described in and by the xo following
statement:-
The present invention relates to the making from peanuts of food
products for human consumption.
Up to now, oil cakes prepared from pea16 nuts have been used as cattle
food, because they not only contain impurities but their taste is much
too unpleasant and inconstant to permit their use as human food, in
spite of their considerable food value. Various attempts have been
made to improve these oil-cakes by sorting, cleaning and roasting them
for example, but the results have not been satisfactory.
Now, according to the present invention, it has been found that food
products highly suitable for human consumption can be prey pared,
provided that after cleaning the kernals to remove foreign matter, the
red skins surrounding the peanut kernels are removed completely, the
kernels thereafter being pressed by an expeller process to extract the
major portion of the oil content therefrom whilst avoiding any
excessive heating, the resulting cake being reduced to a fine powder

and subsequently roasted in this condition to reagglomerate the
product into granules and improve its flavourThis cake may be
subsequently transformed into a well-balanced nitrogenous food by
adding suitable complemental substances thereto.
The process of this invention may be carried out starting from either
non-shelled or shelled seeds. In the first case, the peanuts are
shelled and then subjected to an air [Price 3/61 stream to separate
the shells from the kernels, and the kernels themselves are washed in
the shortest possible time to remove any traces of earth and other
foreign matter, as well as spoiled peanuts, and the washed product is
50 rapidly dried: due to the quick drying process the red skins will
be cracked and stripped from the kernels; an air stream will then
remove these skins from the mass of treated peanuts. Then the kernels
are roughly 55 crushed and subjected to an air stream, so as to remove
any remaining skins and the germs.
One fraction of the kernels, about 5%, is thus carried along with the
skins and may be pressed separately for oil-production purposes. If
the seeds are received in their shelled condition the same washing and
subsequent steps are followed, but with somewhat greater care. The
kernels are accurately sorted to remove any previously crushed 65
kernels; the other, subsequent operations are effected with entire
kernels.
The washing step may be carried out in a few minutes by using an
apparatus comprising an Archimedean screw, so as to humidify 70 only
the red skin surrounding the kernel; the drying step may be commenced
in a centrifugal drier and completed in a matter of a few minutes in a
rotary drier.
The cleaning and drying operations are 75 effected before extracting
the oil and making the cakes. The thus cleaned and dried kernels are
then fed to expellers, which by steam treatment, cause complete
disintegration of the cell tissue and wherein the oil is extracted 80
in the usual manner. However, the pressure is applied very gradually
to avoid any excessive heating.
The cake is then reduced to a fine powder by a supersonic crushing
operation or any 85 other suitable treatment adapted to avoid any
excessive heating; then the product is roasted for a few minutes at a
temperature ranging from 80 to 120'C. Thus, the aroma is developed in
the final phase of the treat780,097 ment and within the cake itself.
The roasting results in desiccation and re-agglomeration of the
proauct into granules.
All these steps may be carried out continuously.
A balanced and nitrogenous product may be obtained by incorporating
amino-acids into the oil cake, in the form of amino-acid bearing
substances (which are either missing or present in too small
proportions in the cake), notably nitrogen-bearing substances of
animal origin, and other amino-acids essential for human nutrition,
such as methionine, cystine and lysine, these substances acting as fat
antioxidants.
Inorganic salts, such as chalk or sodium carbonate, may also be added,
as well as oligo-elements. Improvers such as sugar, salt, sodium
glutamate and so forth may also be added.
The aggregrate of oil cake and additives is crushed to a fine powder,
for example by employing supersonic crushers, and the resulting powder
may be pressed for example to a lozenge form, each lozenge
representing for example a daily dose of nitrogen. More blended tastes
may be obtained by adding complemental products to the first crushing
before roasting the finely crushed kernels.
Certain flavours may even be added to impart special tastes likely to
improve by maturing.
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* GB780098 (A)
Description: GB780098 (A) ? 1957-07-31
Improvements in or relating to the protection of fire extinguishers against
corrosion
780,098 Date of filing Complete Specification: Feb. 24, 1956.
Application Date: March 10, 1955.
No. 7104/55.
Index at acceptance: -Class 123(1), D1.
International -Classification:-F061.
Improvements in or relating to the Protection of Fire Extinguishers
against Corrosion I, HAROLD HUTCHINSON, a British Subject, of Attifyre
Limited, Shaftsbury Road, Acton, London W.3., do hereby declare the
invention, Tfor which I pray that a patent may be granted to me, and
the method by which it is to be performed, to be particularly
described in and by the following statement:-
This invention relates to fire extinguishers of the kind comprising a
metal body adapted to contain a liquid charge which is either water
from a domestic supply or a solution with a water base.
Fire extinguishers of the kind above referred to have hitherto been
subject to the disadvantage that in course of time they are liable to
become corroded, particularly near the water level line inside the
extinguisher, and experience has shown that this is particularly - so
in the case of extinguishers of the water type. Various types of
coating have been employed to retard or inhibit this corrosion, in
particular rubberised coatings employing chlorinated rubber mixtures,
latex, and the like. - Also, various types of plastic or paint
coatings have been employed, but all these suffer from weaknesses,
which [may be hardening through age, deterioration through changes of
temperature and the oxidising effect of the water/air mixture inside
the extinguisher, and especially the lack of adequate and permanent
bonding between the coating and the steel body of the extinguisher,
permitting the coating either to peel away, flake or crack, or
eventually become porous after prolongedt use or storage.
The object of the present invention is to overcome the disadvantages
described in the preceding paragraph and to provide a simple and
effective method of applying a durable protective coating to the
interior of a fire extinguisher body. According to the invention a
method of internally Icoating a fire extinguisher body of the kind
above described consists in preparing a mixture of distilled bitumen

and air blown [Price 3s. 6d.] bitumen, in pre-heating the fire
extinguisher body and in applying thereto a quantity of the melted
bitumen mixture.
In carrying the invention into effect and in the preferred manner the
coating for the interior of a fire extinguisher body is produced by
first preparing a mixture of crude oil based steam distilled bitumen
and crude oil based air blown bitumen in approximately equal
proportions by heating to a temperature of the order of 190 degrees C.
The extinguisher body is then pre-heated to a temperature
(approximately 210 degrees C.) higher than the melting point of the
bitumen mixture, and thereafter a quantity of the melted mixture is
applied to the internal walls of the extinguisher.
A convenient method of applying the mixture to the internal surface of
the fire extinguisher body is to fill the body with the hot bitumen
mixture and immediately drain it by inverting its position. This
operation removes the surplus bitumen mixture and leaves a uniform
tcoating over the entire surface of the extinguisher body which after
cooling is ready for use and retains its characteristic as a uniform
coating for an indefinite period.
The application of the bitumen mixture in the manner described has
been found to prodtce a!comnplete bonding between the bitumen mixture
and the metal which is of such durability that the coating mixture
will not crack or flake from the metal even should the metal be bent
at an acute angle. The coating itself remains slightly pliable under
all climatic and temperature variations. The coating described also
possesses the advantage that it is com.
pletely waterproof, is unaffected by prolonged contact with water
and/or air, and as a consequence will avoid altogether the danger of
liquid percolating through cracks or flakes and causing invisible
corrosion between the coating and the metal wall of the extinguisher.
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* GB780099 (A)
Description: GB780099 (A) ? 1957-07-31
Improvements in or relating to laundry washing machines
Date of Application and filing Complete Specification: April 7, 1955.
Application made in Germany on April 8, 1954.
Application made in Germany on July 8, 1954.
Application made in Germany on Feb. 12, 1955.
Application made in Germany on Feb. 12, 1955.
780,099 No. 10357/55.
Index at acceptance:-Class 138(2), A(1E:8).
International Classification:-D06f.
Improvements in or relating to Laundry Washing Machines We, W A M S L

E R HERD-UND OFEN G.m.b.H., a German body corporate, of 372,
Landsbergerstrasse, Munich, Germany, do hereby declare the invention,
for which we pray that a patent may be granted to us, and the method
by which it is to be performed, to be particularly described in and by
the following statement:This invention relates to a laundry washing
machine which consists of an impeller mounted inside a wash-tub. It is
the purpose of the impeller to swirl the detergent solution in the tub
in such a manner that the detergent flows round and through the
washing, rubbing it together and beating it, so as to terminate the
washing process within 4 to 5 minutes with hot detergent solution.
It is the object of the present invention, in washing machines of this
type, to eliminate as far as possible any intertwining of the washing,
resulting from rotary flow, and leading to prolongation of the washing
process, and at the same time to obtain a shape which permits the
provision of a spin drier drum in the minimum amount of space.
According to the invention there is provided a laundry washing machine
having a wash tub containing at least one impeller, and a spin drier
drum located in a recess of the wash tub, characterized in that the
wash tub comprises four side walls at right angles to each other of
which two adjacent walls are of equal length and are longer than the
remaining two walls, the latter being joined by a wall which is
concave outwardly thus providing a cross-sectional shape having two
limbs at right angles, the impeller or impellers being situated near
the junction of the two limbs and said concave wall receiving the spin
drier drum.
The spin drier drum and the impeller or impellers may have a common
driving [Price 3/61 motor, which may conveniently drive both together.
It is known to drive the two mechanisms, namely the impeller and the
spin drier each by a separate motor, because the two 50 drives have
different characteristics. The impeller requires little starting
torque; full load is only reached at full operating speed. The spin
drier drum, on the other hand, requires a high starting torque, 55
which becomes a minimum when the operating speed is reached.
The single driving motor used according to a feature of the invention
has such a characteristic that it can carry out not 60 only the
washing operation at full operational speed but also the spin drying
operation.
An embodiment of a washing machine according to the invention is
hereinafter 65 described, by way of example, with reference to the
accompanying drawings, in which:
Fig. 1 is a plan of the machine; Fig. 2 is an elevation of the machine
70 with a wall of the housing removed; Fig. 3 is a section of the
bottom of the wash-tub along the line A-A in Fig. 1, the outer housing
being omitted.
Inside an all-embracing housing 1, which 75 is substantially square in
cross-section, there is on the one hand a wash-tub 2 with two
impellers 3 and on the other hand a spin drier drum 4. The wash-tub
has a cross-sectional shape having two limbs 580 and 6 at right angles
to one another. The two impellers 3 are situated near the junetion of
the two limbs 5 and 6. The walls 7 and 8 facing the spin drier drum 4,
form a circular arc, at the centre of which is 85 the drive shaft 9 of
the spin drier drum 4.
This lies inside a square two sides of which are defined by the two
external sides 10 and 11 of the two arms 5 and 6.
The impellers 3 rest near the bottom of 90 780,099 the tub 2 and are
mounted on shafts 12 which have V-belt pulleys 13 of large radius. The
V-belt pulleys 13 are connected bv means of a V-belt 14 to a V-belt
pulley 15 of smaller radius (the radius is about half the radius of
the pulleys 13), which is mounted on the shaft of a driving motor 16
which also carries the spin drier drum 4. The motor 16 is mounted on
springs 17. Its stator may, in addition, be turnable against spring
tension so that, as a result of the reaction force, it turns through a
small angle contrary to the direction of rotation of the rotor. This
turning can be utilized in known manner to actuate a mechanical brake

on the drum 4. A simple mechanical brake may, of course, also be
provided, in so far as such a brake is necessary at all in view of the
fact -that the impellers 3 already act as a brake. At the top the
washing machine is covered with a plate 18 which extends over the
upper edges of the tub 2 and of the drunm. In addition, a cover 19 may
also be articulated to the housing, 1 so as to permit the washing
machine to be completely closed at the top so as to protect it from
dirt when not in use, and if necessary to form a surface on which to
deposit articles. As shown in Fig. 2, the plate 18 is drawn down
somewhat over the drum 4 so as to form the seating for a circular lid.
Whereas in wash-tubs with one impeller, the washing becomes entangled
as a result of the rotational flow about the axis of the impeller, and
the washing process is eonsequently prolonged, such entangling is
largely prevented as a result of the special shaping of the wash-tub
2. Above all, rotary circulation of the washing about the axis of the
impeller is prevented and hence the entanglement of the washing The
circulation of the washing takes place in planes parallel to the wall
10 or 11 of the wash-tub. At the bottom of the container, the
impellers drive the flowing detergent solution, by which the washing
is carried along, away from the impellers in the direction of the two
limbs 5 and 6.
The solution flows into the hollow space in these two limbs, since the
wall 7 likewise guides the current of liquid into these spaces. Near
the bottom, therefore. the items of washing move into the spaces in
the limbs at the ends of which they rise with the current. Near the
surface, the current drives the washing back towards the impellers.
Above the impellers, they are again drawn down and begin the
circulation again from the beginning. Entangling of the washing in the
zone immediately above the impellers therefore could not occur at all,
or only over a very long period of running.
The special shape of the wash-tub not only has the advantage
mentioned, however, lut in addition also resul's in the fact that the
spin drier drum can be housed in a manner taking up very little extra
space. 70 As a result of the common drive, the impellers and the spinl
drier drum also operate simultaneouslyv. This is an advantage with
this washing principle because the washing operation by means of the
75 impeller takes about four minutes, that is to say, exactly the same
time as the washing is generaill spin dried by means of the drum 4.
Sueeessive washing operations can therefore be earried out
simultaneously, without any difficulty by treating in the drum the
elaroe previously treated in the wash-tub at the same time as the
following eharge is treated in the washtub. 85 With two impellers
present,. which is very advantageous in itself. two different flows of
the washing liquid can be distinguished. One flow is a circular one
about the rotational axes of the two impellers. 90 The second flow is
a radial flow, which is substantially in the plane of the two
impellers. The washing liquid flowing radially collides between the
two impellers and circular eddies are formed which do not 95 lead to a
washiing effect but nevertheless form an undertow which attracts the
washing present in the washing liquid. Nevertheless the washing should
come into contact with the impellers as little as possible, 100 or not
at all, and in particular it should not get into the space between the
two impellers because here the washing is partieularly subjected to
wear.
To remedy this, a separating member is 105 provided between the two
wash-tub impellers lying in the same plane, which prevents the mutual
impingement of radialflow washing liquid.
The two impeller discs 3 are spaced 110 apart at a distance which is
not greater than the diameter of one impeller disc.
Between the two discs 3 is a separating member 20 in the form of a
ridge stamped out of the bottom of the wash-tub and the 115
cross-section of lwhich is in the shape of a gable-ended roof. The top
of the separating member 20 lies above the plane of the impeller discs
3. The side faces are directed obliquely downwards towards the 120

impeller discs 3. The height of the separating member 20 corresponds
to about a quarter to half the diameter of the impeller discs.
The two impeller discs 3 both riun in an 125 anti-clockwise direction.
The washing liquid therefore circulates against the wall of the tub in
the direction of the arrows shown. In addition to this flow, there is
also a radial flow in the region of the plane 130 780,099 in which the
impeller discs lie. The radial flows of the two impeller discs would
collide if the separating member 20 were not present, and would form
an undertow which could attract the washing.
The presence of the separating member prevents such a whirlpool and
the radial flows are diverted upwards in the direction of the arrows
21 in Fig. 3, whereby the washing is moved away from the impeller
discs 3, particularly from the space between the two impeller discs.
It is known to mount the lower end of the shaft of a vertical spin
drier resiliently in a rubber sleeve and thus to compensate for the
out-of-balance resulting from uneven charging with washing.
It is now necessary to make the spin drier drum comparatively long on
the one hand so as to keep the lower bearing end of the drum shaft
near floor level and on the other hand to keep the mouth of the drum
at operating height. In this case, the resilient mounting of the lower
end of the drum shaft is not sufficient, and an intermediate shaft is
inserted between the motor shaft and the drum shaft.
Any out-of-balance of the drum is compensated for by the intermediate
shaft, which permits a parallel displacement of the drum in relation
to the floor or bottom of the drum housing. When out-of-balance is
present, the intermediate shaft automatically adapts itself to the
axis passing vertically through the centre of gravity of the drum.
Naturally, it is understood that the resilience of the coupling
members and of the bearing must not be too great.
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