Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1982-09-13
1984-12-11
Jillions, John M.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
2421077, B65H 7548
Patent
active
044873808
DESCRIPTION:
BRIEF SUMMARY
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.
The present invention provides in one aspect a reeling device including a reel for holding, paying out and winding in a linearly extendable, 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 of 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 extendable, flexible member, means for biasing said reel in a direction of rotation for winding in said member and 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.
Specific constructions of reeling devices and associated latching mechanisms will now be described with the aid of the accompanying drawings in which:
FIG. 1 is a side elevation of part of a first reeling device,
FIG. 2 is a cross-section on line A--A in FIG. 1,
FIG. 3 is a side elevation of part of a second reeling device,
FIG. 4 is a cross-section through the second reeling device.
The reeling device shown in FIGS. 1 and 2 comprises an outer casing 1 which supports a shaft 2 on which a reel 3 for hose or the like is mounted for rotation. 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 comprises a projection 21 which extends from the casing 1 and a carrier 22 which is secured to the reel 3 and which carries two members 23 which are mounted to pivot on pins 24 between abutments 26 and 27. The members 23 carry projections 28.
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 projections 21, which acts as a cam surface to ride over the projections 21. Gravity will also assist the projections 28 to pass over the projections 21 as is shown by the bottom one of the members 23 in FIG. 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 FIG. 1) and the projections 28 will pass over the projection 21 without engaging therewith. However, if reel 3 rotates at a relatively slow rate the members 23 will not be flung out to the same extent and instead will pass between the lip 31 on the projection 21 and the shaft 2 and as a result of abutting projection 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 winding in.
Since it may be desired that winding in without latching should occur at such relatively slow rates of rotation of reel 3 a manual means comprising a guide 41 mounted on an axially slidable pivot 42 provided with a push butto
REFERENCES:
patent: 1948158 (1934-02-01), Barr
patent: 2555560 (1951-06-01), Timm
patent: 3039717 (1962-06-01), Appleton
patent: 3528624 (1970-09-01), Tamarin
patent: 3596849 (1971-08-01), Tamarin
patent: 3889897 (1975-06-01), Van Zelderen
patent: 4206888 (1980-06-01), Magvar
patent: 4227661 (1980-10-01), King et al.
patent: 4293107 (1981-10-01), Ziv
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