Note: Descriptions are shown in the official language in which they were submitted.
it
REELING DEVICE
This invention relates to a latching
mechanism and to a reeling device.
The reeling devices in accordance with
this invention can be used to reel anything desired
but most application will be found in reeling hoses
or electrical cable or flex.
The present invention provides in one
aspect a reeling device including a reel for holding,
paying out and winding in a linearly extendible,
flexible member, means for biasing said reel in a
-direction of rotation for winding in said member
and a latching mechanism adapted to prevent winding
in of said member; the latching mechanism including a
member rotatable with the reel and movable under
centrifugal force between a non-latching and latching
position in consequence of the rate of rotation ox
the reel exceeding a predetermined magnitude.
The latching mechanism preferably includes
said member which is attached to the reel and a
stationary latch attached to a frame or casing.
Manually operable means may be provided to
prevent latching at any rotational speed of the reel.
In another aspect the present invention
provides a reeling device including a reel for holding,
paying out and winding in a linearly extendible,
flexible member, means for biasing said reel in a
direction of rotation for winding in said member and
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means to limit the maximum rotational speed of the
reel. That means preferably comprises brake means
adapted to be brought into operation as a result of
centrifugal force.
of
Specific constructions/reeling devices and
associated latching mechanisms will now be
described with the aid of the accompanying drawings
in which:-
Figure 1 is a side elevation of part of a
10 first reeling device,
Figure 2 is a cross-section on line A-A
in Figure 1,
Figure 3 is a side elevation of part of a
second reeling device,
I Figure 4 is a cross-section through the
second reeling device,
Figure 5 is a cross-section through a third
reeling device,
Figure 6 is a side view of part of the
third reeling device,
Figure 7 is another side view of part of
the third reeling device,
Figure 8 is a cross-sectional view of
part of the third reeling device,
Figure 9 is a cross-section of an
alternative,
Figure 10 is a side view of part of the
third reeling device,
Figure 11 is a cross-section on line A-A
in Figure 10,
Figure 12 is another cross-section of the
part shown in Figure 10,
Figure 13 is a cross-section on line B-B
in Figure 12, and
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So
Figure 14 is a side view of an alternative.
The reeling device shown in Figures 1 and 2 come
proses an outer casing 1 which supports a shaft 2 on
which a reel 3 for hose or the like is mounted for rota-
lion. A spring (not shown) is attached to -the shaft 2
and reel 3 for biasing the reel to rotate in a recoil
direction indicated by arrow 4. An end 6 of the shaft 2
is flattened to enable it to be rotated to tension the
spring.
A latching mechanism for the reel 3 comprising
an abutment 21 which extends from the casing 1 and a car-
nor 22 which is secured to the reel 3 and which carries
two members 23 which are mounted to pivot on pins 24 be-
tweet abutments 26 and 27. The members 23 carry project
lions 28. The abutment 21 has a first, radially inward,
guide surface 30, a second radially outward, guide sun-
face 29 and a lip 31.
When it is desired to pay out hose from the reel
3 the hose is grasped and pulled and will pay off the
reel. In paying out the reel 3 turns in the opposite
direction to arrow 4 and the projections 28 will be moved
by the surface 29 of abutments 21, which acts as a cam
surface to ride over the abutments 21. Gravity will also
assist the projections 28 to pass over the abutments 21
as is shown by the bottom one of the members 23 in Figure
1.
To wind in hose the hose is released to allow
the spring to turn the reel 3 in the direction of arrow 4
and winding in will occur. If the reel 3 rotates at a
relatively fast rate the members 23 will be flung out
under the influence of centrifugal force (see the lower
member 23 in Figure 1) and the projections 28 will pass
over the abutment 21 without engaging therewith. How-
ever, if reel 3 rotates at a relatively slow rate the
members 23 will not be flung out to the same extent and
5~9
instead will pass between the lip 31 on the abutment 21
and the shaft 2 and is guided by the surface 30 into
abutment with the abutment 21. As a result of abutting
abutment 21 the reel 3 will be prevented from winding
in.
Thus, at relatively fast rates of rotation of
reel 3 latching will not occur but at relatively slow
rates of rotation of reel 3 latching will occur and those
relatively slow rates may be had by a user holding the
hose and controlling, by hand friction, its rate of wind-
no in.
Since it may be desired that winding in without
latching should occur at such relatively slow rates of
rotation ox reel 3 a manual means comprising a guide 41
mounted on an axially slid able pivot 42 provided with a
push button 43 can be used. If the guide 41 is slid from
the full line position in Figure 2 to the dash line post-
lion in Figure 2 by pushing on the button 43 the guide 42
will be in a position to guide the projections 28 over
the abutment 21 by moving the members 23 outwardly. The
ability of pivot 42 to pivot is of use in paying out
after latching with the button 43 depressed in that the
projections 28 can cause the guide 41 to pivot so as not
to restrict paying out.
The reeling device ox Figures 3 and 4 is similar
to that of Figures 1 and 2 and like numerals denote like
parts.
In this instance, however, the carrier 22 has
two tunes 51 on arms 52 pivotal mounted thereto at 53,
the tubes 51 carry sliders 54 having the projections 2
and brake surfaces 56, the arms 52 are connected to a
linkage 57 which is pivotal mounted at 58 through pins
59 located in slots 61 and are limited in their movement
by abutments 62, and the casing 1 has a brake surface
63.
Lot
5.
To pay Owlet hose From the reeling device of
Figures 3 and 4 the hose is pulled to cause the reel
3 to rotate in the opposite direction to arrow 4 the
carrier 22 rotates the projections 28 move over the
surface 29 of abutment 21. Gravity effects on the
lower one of the tubes 51 are at least partly
eliminated by the linkage 57.
To wind in hose the hose is released to
allow a spring (not shown) to turn the reel 3 in the
direction of arrow 4 and winding in will occur. If
the reel 3 rotates at a relatively fast rate the
sliders 54 will be flung out under the influence of
centrifugal ours the tubes 51 will pivot about 53
and the projections 28 will clear the abutment 21.
However if reel 3 rotates in excess of a predetermined
speed the surfaces 56 will act on surface 63 to
cause braking.
If reel 3 rotates at a relatively slow
rate the sliders 54 will not be flung out to the
same extent and latching can occur in which the
projections 28 engage with the abutment 21.
The guide I permits similar manual release
as in respect of Figures 1 and 2.
The reeling device of Figures 5 - 8 and
10 - 13 is similar to that of Figures 1 and 2 and
like reference numerals denote like parts. Further
the reeling device has arms 71 attached to the carrier
22 via pivots 72; the arms 71 carry rollers 73 and
brake surfaces 56 and have ends 74 which bear on
piston rods 76; the carrier also supports cylinders
77 in which are located springs 78 and flexible
damper pistons 79 which are connected to the rods 76
a sleeve 79 is mounted to the casing 1 and rotatable
supports a cam plate 81 having ramp surfaces 80 and 82
291
I
,
recesses 83 and apertures 84 having undercut teeth
I on one side, a lever 87 having an undercut tooth
88 and which is pivoted to the casing l at 89 and a
spring loaded push button 91.
The lever 87 is so biased by the spring
loaded push button 91 to normally have the tooth 88
engaged in one of the apertures 84 and with the
respective one of the teeth 86 to prevent the cam
plate 81 rotating on the sleeve 79 but by pressing
lo on the button 91 the tooth 88 can be disengaged
from the apertures 84 and teeth 86.
To pay out hose the hose is pulled on and
the reel 3 it turned in the opposite direction to
arrow 4. The carrier 22 rotates and revolves the arms
71, the rollers 73 roll up the surtaxes 82 and around
the cam plate 81 which will not interfere with paying
out of the hose.
To recoil hose the hose first pulled
on then released and the reel 3 is allowed to turn
rapidly and the surfaces 80 will act on the rollers 73
to cause the arms 71 to move outwardly. In this
respect it should be noted that the speed of rotation
of the drum needs to exceed a particular speed and
the slope of the surfaces 80 and the tension of
springs 78 need to be such that the rollers 73 will
pass over and not enter recesses I However, at
a lower speed of rotation the rollers 73 will enter
the recesses 83 to give latching. Thus, user control
over the speed of rotation of the reel 3 provides, as
selected, recoil or latching against recoil. If
however recoil occurs in excess of a predetermined
speed the arms 71 will move so much under the influence
of centrifugal force that the surface 56 will contact
the surface 63 id create a braking effect.
35I
I 3
.
Alternatively, ho pushing on the button 91
- the can plate 81 is freed to rotate on the sleeve 79
and recoil cam occur irrespective of whether the
rollers 73 are or are not located in the recesses 83.
The pistons 79 will serve to exert a
damping effect on movement of the arms 71.
The alternative of Figure 9 merely uses a
solid piston 95 and the alternative of Figure 14 is
merely a slightly different configuration of parts.
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