Winding – tensioning – or guiding – Unwinding – With drive mechanism
Reexamination Certificate
1999-11-19
2001-01-30
Walsh, Donald P. (Department: 3754)
Winding, tensioning, or guiding
Unwinding
With drive mechanism
C242S422500, C242S598100
Reexamination Certificate
active
06179243
ABSTRACT:
FIELD OF THE INVENTION
The invention relates to the technical field of machines for dispensing wipes made of paper, cellulose wadding, crepe paper or similar materials intended, in particular, for wiping users' hands, the dispensing of toilet paper and dispensing of paper towels.
BACKGROUND OF THE INVENTION
The Applicant has developed numerous patents for machines of the above-mentioned type and the reader is briefly reminded of the features of such machines which essentially comprise a housing (
1
) having a back surface (
1
a
) and two lateral wings (
1
b
), the lower part of said housing extending downwards with a sloping profile, the entire assembly having a shape suitable for accommodating a cover (
2
). The lower part of the housing is capable of accommodating, in a known manner, an internally hollow drum (
3
) which houses a cutting device (
4
). The upper part of the housing accommodates two end shields (
5
a
) (
5
b
) capable of accommodating an articulated reel holder (
6
) having end fittings (
6
d
) that support a reel of wipe material (B). Said reel of wipes is capable of resting against drum (
3
) in a manner which allows the strip of material to be fed through and unwound to the rear between the drum and the back wall of the housing so that said strip of material emerges from the lower part of the machine. To ensure the reel of material grips the drum, it is necessary to exert a certain constant pressure while the reel of material is being unrolled, regardless of the forces applied.
The reel-holder end shield is capable of swivelling in order to allow constant adjustment against said drum. It is therefore necessary to seek to obtain and monitor correct unwinding of the paper strip depending on the diameter and weight of the roll of paper and depending on the tensile force exerted on the protruding end of the paper as it leaves the machine. One must also take into account the nature of the paper which can vary depending on the tightness of the turns and coils.
SUMMARY OF THE INVENTION
The aim sought after was therefore to devise a material dispensing machine that included a device for regulating the unwinding of the paper strip, thus making it possible to monitor, accurately and reliably, the dispensing of said paper strip.
According to a first aspect, the machine comprises a regulating device making it possible to ensure the reel exerts constant pressure on the drum, this device being associated with each of the arms of the reel holder in a flexible, elastic manner with rails forming a slide being located between the lateral wings of the housing and the reel-holder arms in order to allow sliding and limited displacement of the sliders loosely-mounted on said rails with the capacity for controlled, appropriate elastic movement and allowing, depending how much of the reel of material has been used up, said material to press against the drum with constant tension.
These aspects and others will become apparent from the following description.
REFERENCES:
patent: 4691503 (1987-09-01), Frerich
patent: 5054706 (1991-10-01), Granger
patent: 5558302 (1996-09-01), Jesperson
patent: 5772291 (1998-06-01), Byrd et al.
patent: 0192591 (1986-08-01), None
patent: 2592022 (1987-06-01), None
patent: 2621304 (1989-04-01), None
Rivera William A.
Wall Marjama & Bilinski
Walsh Donald P.
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