Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1982-08-31
1985-04-16
Jillions, John M.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
B65H 7548
Patent
active
045111014
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 or flex cables.
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 and constructed and arranged such that on paying out said latching mechanism is sequentially and repetitively put into and out of condition to prevent winding in of said member.
Preferably there is a first means for putting the latching mechanism into said condition and a second means for putting the latch mechanism out of said condition. Said first means and said second means may be associated with the reel or with a casing or support for the reel.
The latching mechanism may include a ratchet wheel and a pawl. The pawl is preferably biased by an over-the-centre mechanism to be in a first or a second position in which it can and cannot engage with the ratchet wheel to prevent winding in of said member. The ratchet wheel may have a ramp surface for moving the pawl from the first position to the second position and means for moving the pawl from the second position to the first position may also be associated with the ratchet wheel but at an angularly rotated position.
The latching means may be able to latch one or more times per rotation of the reel.
Constructions of latching mechanisms and winding devices in accordance with this invention will now be described with the aid of the accompanying drawings in which:
FIG. 1 is a side elevation of the latching mechanism forming part of a winding device,
FIG. 2 is a cross-section through the mechanism of FIG. 1 and shows parts of the winding device,
FIG. 3 is a side elevation of another latching mechanism forming part of another winding device,
FIG. 4 is a cross-section through the mechanism of FIG. 3 and shows parts of the winding device,
FIG. 5 is a top perspective view of a reeling device in accordance with this invention,
FIG. 6 is a bottom perspective view of the reeling device of FIG. 5, and
FIG. 7 is a partial cross-sectional view of the reeling device of FIG. 5.
The latching mechanism and winding device shown in FIGS. 1 and 2 comprises an outer casing of which one part 1 is shown and a drum or reel of which one part 2 is shown which is mounted to the casing on a shaft 3 to rotate thereon. The shaft 3 is fixed against rotation.
A cam plate 4 is mounted on the shaft 3 and is free to rotate on the shaft in the direction of the arrow 6 but is restricted against rotation in the opposite direction by projections 7 on the shaft 3 which have abutment surfaces 8 and ramp surfaces 9, and flexible arms 21 on the cam plate 4 which can ride up the ramp surfaces 9 for rotation in the direction of the arrow 6 or abut against the abutment surfaces 8 to restrict against rotation in the opposite direction. The cam plate 4 has ramp surfaces 22 and recesses 23.
Secured to the outer casing part 1 are abutments 24, an abutment 25 and a pivotally mounted latch 26 having a latching recess 27. The latch 26 may be gravity biased if oriented as shown or spring-loaded if some other mounting position is desired.
Secured to the drum 2 at 180.degree. spacings are two pawl mechanisms each comprising a pivotally mounted pawl 31, an over-the-centre lever 32 which passes through a guide 33 fixed to the drum 2 and a biasing spring 34. An abutment 36 and a projection 37 are carried by each pawl 31 and abutments 38 are carried by the drum 2. The abutments 24 are radially in line with the projections 37.
Spring means, not shown, biases the drum 2 in the recoil direction indicated by arrow 40.
The manner of operation of the winding device of FIGS. 1 and 2 is as follows.
Payout
From a position in which a hose, cable or other element is fully woun
REFERENCES:
patent: 2391840 (1945-12-01), Meletti
patent: 2563714 (1951-08-01), Foster
patent: 2976959 (1961-03-01), Husted
patent: 2990132 (1961-06-01), Mills
patent: 3384108 (1968-05-01), Kern, Jr.
patent: 3490715 (1970-01-01), Nicpon
patent: 3590656 (1971-07-01), Lloyd, Jr.
patent: 4227661 (1980-10-01), King et al.
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