[0001] The invention relates to mop wringers and buckets for use in wet mopping. It is particularly
concerned with wringers of the type which mount on a mop bucket and which are manually
operated, by means of a lever handle, to squeeze out into the bucket a mop inserted
in the wringer.
[0002] Known wringers of the foregoing type mount on the rear wall of the bucket, which
is severely stressed with a buckling force which has to balance the operating force
applied to the wringer handle. Thus the length of the handle which can be used is
limited by the necessity of avoiding over-stressing of the bucket wall, which in turn
limits the squeeze pressure which can be applied to a mop. A further disadvantage
is that yielding of the bucket wall results in a non-positive yielding "feel" when
applying the operating force to the handle.
[0003] A principal aim of the invention is to provide a wringer mounting which enables a
longer operating handle to be employed with a resultant improved wringing-out action.
[0004] According to the invention a mop wringer with a lever operating handle mounts on
the rear wall of a bucket and when it is so mounted is supported on the side walls
of the bucket at or towards the front of the wringer, with the wringer engaging the
bucket in a manner which opposes the tendency for the back of the wringer to lift
off the bucket when an operating force is applied to the wringer handle. Preferably
the mounting of the wringer on the rear wall of the bucket provides the engagement
which opposes the tendency for the back of the wringer to lift.
[0005] Front support of the wringer may be by means of a cross member or side support members
on the wringer, or a wringer support member or members may be may be mounted on the
bucket. These arrangements can be employed to adapt existing wringer and/or bucket
constructions/designs to provide wringer support in accordance with the invention.
Alternatively, front support of the wringer may be provided by a supporting formation
of the bucket, for example by integrally moulded internal support ribs or ledges.
[0006] In a preferred arrangement a cross member fixed at the front of the wringer rests
on the side walls, and this member may engage the bucket side walls so as to oppose
any tendency for the side walls to spread apart as the wringer is operated. Such cross
member is conveniently manufactured from a length of flat metal strip attached to
the front of the bucket, with bent and twisted ends which provide a formation to engage
the bucket side walls. This cross member may be manufactured and supplied for use
to adapt an existing wringer for support on an existing bucket in accordance with
the invention.
[0007] In another arrangement, outrigger support members integral with or having a firm
connection to the sides of the wringer rest on the bucket side walls for support of
the wringer towards the front thereof. Alternatively, support at the front of the
wringer may be provided by a separate saddle member which extends over and between
the side walls below the wringer, or separate individual saddle members may respectively
fit over the side walls and project inwardly to support the wringer.
[0008] As the operating moment applied to the wringer handle is no longer withstood by bending
and buckling forces applied to the rear wall of the bucket, but by an upward tension
at the rear wall and downward compressive forces at the side walls, a longer handle
can be used and a more solid "feel" is provided as the operating force is applied.
The longer leverage thus obtained enables a wringer to be manufactured with which
the average cleaning operative can achieve a completely wrung-out mop, whereas with
present handle lengths mops are commonly incompletely wrung out. At the same time
thinner bucket walls will often suffice with a moulded bucket, thus saving on the
cost of the moulding material and providing a cheaper bucket construction.
[0009] As the length of the handle is increased the front floor support of the bucket may
have to be moved forwardly to prevent the bucket tipping over towards the operative
when operating the wringer. Thus the forward floor support may be positioned in a
lateral plane which is disposed in front of the bucket and which preferably contains
the position on the handle to which the operative force is applied with the handle
at the wringing position.
[0010] The invention will now be further described with reference to the accompanying drawings
which illustrate, by way of example, several embodiments of the invention. In the
drawings:
Fig. 1 is a perspective view of a hand-operated wringer mounted on a mop bucket, in
accordance with a preferred embodiment of the invention;
Fig. 2 diagrammatically illustrates a rear mounting of the wringer of Fig. 1;
Figs. 3A and 3B are respectively top and front views of a cross member of the preferred
embodiment;
Figs. 4 and 5 are partial views illustrating another embodiment;
Figs. 6 and 7 are diagrammatic views respectively illustrating two further embodiments;
Fig. 8 is a plan view of a bucket of yet another embodiment; and
Fig. 9 is a diagrammatic front view with the bucket sectioned on the line IX-IX in
Fig. 8.
[0011] Fig. 1 illustrates a hand-operated wringer 1 with an operating lever handle 2 and
which mounts on top of a mop bucket 3 as shown. Movement of the handle from a generally
upright resting position (not shown) to the more or less horizontal and forwardly
projecting position ("wringing" position) illustrated applies a squeeze pressure to
a mop, such as 4, inserted in the wringer 1 from above. The wringer 1 is of conventional
general construction and hence is not further described herein except for the novel
features associated with the invention.
[0012] In accordance with the invention the wringer 1 mounts on the rear wall 5 of the moulded
plastics bucket 3, and it is supported at the front on the bucket side walls 6 and
7. Such front support is provided by a cross member 8 which is fixed at the front
of the wringer 1, by suitable fixings 9 such as screws or rivets, and which rests
on the rim 10 of the bucket. The ends 8a and 8b of the cross member 8 hook over and
seat on the rim 10 so as to oppose any tendency for the side walls 6 and 7 to spread
apart during a wringing operation.
[0013] The cross member 8, which may be manufactured and supplied for attachment to existing
wringers to provide the manifold advantages of the invention, is as shown more particularly
in Figs. 3A and 3B. As can be seen therefrom the member 8 is formed from a length
of flat metal strip, for example being of galvanized mild steel, with end portions
8a and 8b twisted through 90° and then bent down at right angles to provide end flanges
11a and 11b. Thus the member 8 has end formations which hook over and seat on the
bucket rim 10. The main flat body 8c of the member 8 has suitable fixing holes 8d
for the described fixings 9.
[0014] The rear mounting of the wringer 1 on the rear wall 5 is such that it opposes a tendency
for the back of the wringer 1 to lift off the bucket as the operating force is applied
to the handle 2 as indicated by the arrow F. In Fig. 2 there is illustrated an example
of a suitable rear mounting of the wringer 1, comprising a hook-like rear formation
which as the wringer 1 is fitted hooks around and beneath the rim 10 of the bucket.
This formation may be provided on each of two space mounting projections 12 at the
rear of the wringer 1.
[0015] As a result of the rear mounting and front support of the wringer 1 the wringing
force is distributed, largely as a compressive load on the bucket 3 by the cross member
8 as indicated by the arrows L in Fig. 1. As the wringing force is not withstood by
buckling forces on the rear wall, as it is in a conventional arrangement, the wringing
action has a "solid" feel and wringer deflection does not dissipate the wringing forces.
Furthermore, a longer handle 2 can be employed which enables much greater wringing
forces to be applied for given operative effect. The invention enables a handle to
be used which in some circumstances can be of the order of twice the length of the
handles as normally used in the past.
[0016] For mobility the bucket 3 is mounted on four corner castors, referenced 13 at the
rear and 14 at the front. As can be appreciated from the view of Fig. 1, the increased
length of the handle 2 not only increases the wringing efficiency but it facilitates
use of the handle 2 for propelling and steering the bucket 3 on the castors 13,14.
The rear castors 13 are fitted to floor support outriggers such as 15 and the front
castors 14 to outriggers 16. The outriggers 15 are generally aligned with the rear
wall 5, and normally the outriggers 16 would be similarly disposed with respect to
the front wall 17 of the bucket 3, as is shown in broken lines for the left-hand corner
in Fig. 1. However, in view of the increased length of the handle 2 the front castors
14 are moved forwardly, to prevent the bucket 3 tipping over forwardly when the operating
force is applied to the handle 2. The outriggers 16 are now cranked to extend forwardly
so that the front floor reaction forces indicated by the arrows R lie in a lateral
plane, in front of the main body volume of the bucket 1, which plane also contains
the arrow F. Thus the castors are effectively brought into line with the vertical
handle load to prevent the bucket tipping.
[0017] In the modification of Figs. 4 and 5 outrigger support members 30 and 31 are positioned
at the two sides near to the front of the wringer 1. Each support 30 or 31 has a lower
recess, 32 or 33, which seats on the bucket rim 10 to provide the same advantages
as the cross member 8 of the arrangement of Figs. 1 to 3. However, in this case the
rim 10 is engaged on both its inner and outer sides so that the support members 30
and 31 act to strengthen the bucket side walls against both inward and outward movement
and thus provide particularly firm lateral relative location of wringer and bucket.
The cross member of the earlier embodiment may if desired be modified so that it likewise
engages on both sides of the rim 10. The supports 30 and 31 are detachably secured
to the wringer 1, each having a plug-in connection thereto as shown in Fig. 5. Flanged
projections 34 and 35 respectively engage at a lower open ended slot 36 and an upper
keyhole slot 37 at the sides of the wringer.
[0018] Fig. 6 illustrates how the front support of the wringer 1 may be provided by a separate
saddle member or sling 40 which at the ends 41 and 42 hooks over the side walls 6
and 7. The member 40 extends below the wringer 1 under wringer cheek plates 43,44
near the front thereof to provide direct vertical support. The support member 40 may
be sufficiently rigid to tie in the bucket sides and thus oppose any tendency for
outward spreading of the side walls 6 and 7.
[0019] In the embodiment of Fig. 7, the single separate saddle member 40 is in effect split
into two double-hook like support members 50 and 51. At the upper ends 52 and 53 the
members 50 and 51 respectively hook over the bucket side walls 6 and 7. At the lower
ends 54 and 55 the members 50 and 51 respectively hook under the cheek plates 43 and
44 near to the front of the wringer 1.
[0020] The remaining embodiment of Figs. 8 and 9 employs a design of bucket which enables
the advantages of the invention to be achieved with an existing wringer construction.
The bucket 60 is moulded with internal ledges 61 at the sides, these ledges 61 extending
from the bucket rear wall 62 for a distance slightly greater than that spanned by
the wringer 63. Front feet 64 of the wringer 63, which are normally provided to enable
the wringer to be stood on the floor when not in use, respectively rest on the ledges
61. This supports the wringer 63 on the bucket side walls 65, of which the ledges
61 form part, at the front in accordance with the invention. The wringer 63 mounts
on the rear wall 62 as before.
[0021] In that it enables a longer handle to be fitted to the wringer the invention has
important ergonomic advantages in addition to that of better wringing-out of a mop.
Thus the invention provides excellent benefits for people regularly using mop buckets
and wringers, particularly in lessening the back strain commonly suffered by cleaning
operatives. Not only can a given or improved wringing action be achieved with far
less effort than hitherto, but the handle can be operated higher up so that less stooping
is involved when wringing out a mop.
1. A mop wringer arrangement, wherein the wringer (1;63) has a lever operating handle
(2) and mounts on the rear wall (5;62) of a bucket (3;60) and is supported on the
side walls (6,7;65) of the bucket (3;60) at or towards the front of the wringer (1;63),
with the wringer (1;63) engaging the bucket (3;60) in a manner which opposes the tendency
for the back of the wringer (1; 63) to lift off the bucket (3;60) when an operating
force is applied to the wringer handle (2).
2. A mop wringer arrangement according to claim 1, wherein the mounting on the rear wall
(5,62) provides said engagement which opposes the tendency for the back of the wringer
(1;63) to lift.
3. A mop wringer arrangement according to claim 1 or claim 2, wherein a cross member
(8) [or side support members(30,31)] fixed at or adjacent the front of the wringer
(1) is (or are) adapted to rest on the side walls (6,7) of the bucket (3) for support
at or towards the front of the wringer (1).
4. A mop wringer arrangement according to claim 3, wherein the cross member (8) is adapted
to engage the bucket side walls (6,7) so as to oppose any tendency for the side walls
(6,7) to spread apart as the wringer (1) is operated.
5. A mop wringer arrangement according to claim 4, wherein said wringer support is provided
by a cross member (8) formed from a length of flat metal strip attached to the front
of the wringer (1), end portions (8a,8b) of the strip (8) being twisted with respect
to the flat main body thereof and the ends bent downwards to provide end formations
(11a,11b) which hook over the respective side walls (6,7) of the bucket (3).
6. A mop wringer arrangement according to claim 1 or claim 2, wherein support at the
front of the wringer (1) is provided by a separate saddle member (40) which extends
over and between the side walls (6,7) below the wringer (1).
7. A mop wringer arrangement according to claim 1 or claim 2, wherein support at the
front of the wringer (1) is provided by separate individual saddle members (50,51)
which respectively fit over the side walls (6,7) of the bucket (3) and project inwardly
thereof to support the wringer (1).
8. A mop wringer arrangement according to claim 1 or claim 2, wherein support of the
wringer (63) at or towards the front thereof is provided by a supporting formation
(61) of the bucket (60).
9. A mop wringer arrangement according to claim 8, wherein the bucket side walls (65)
are moulded with internal support ledges (61) or ribs on which the wringer (63) rests.
10. A mop wringer arrangement according to any one of the preceding claims, wherein front
floor support means (14) of the bucket (3) are positioned in a lateral plane in front
of the bucket (3).