Cutting – Tool with either work holder or means to hold work supply – Rotatable wound package supply
Patent
1995-07-28
1999-11-09
Rada, Rinaldi
Cutting
Tool with either work holder or means to hold work supply
Rotatable wound package supply
83298, 83334, 83337, 83650, 74 32, 225 72, 225106, B26D 538, B26D 726, B26F 302
Patent
active
059792841
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to the technical sector of apparatuses dispensing cellulose wadding, creped paper towels and towels of similar materials, especially those intended for wiping the user's hands and toilet paper.
There are a very large number of manual, semi-automatic and automatic dispensing apparatuses which perform the function mentioned above. The Applicant, in particular, has developed several apparatuses of this type with central unreeling, folding of the strip of material in accordion pleats and also as an automatic paper towel dispenser using a cutting device built into a drive drum. All of these apparatuses are currently in use and operate very reliably. The cost price of these various apparatuses varies greatly depending on their construction and they are suited to different market segments.
As part of his own research, the Applicant is interested in designing a new automatic apparatus of which the architecture includes a reduced number of parts so that he can target the market for low-cost paper towel or toilet paper dispensing apparatuses.
SUMMARY OF THE INVENTION
One object sought after according to the invention was to design an apparatus devised so that its various components can be assembled manually in a quick, simple manner without requiring any non-standard tools.
Another object sought after according to the invention was to design an apparatus in which the various components are, once fitted, self-locking and suitable for dispensing paper regardless of the tension stresses produced when the user pulls the paper.
Another object sought after according to the invention was to ensure the locking of the components of the apparatus in position by making use of the elasticity of certain fixed parts formed on the support housing and cover.
Another object sought after according to the invention was to produce an apparatus that can be quickly assembled or disassembled by an operator and that also allows the characteristics of the drum and cutting device to be altered if necessary without modifying the structure of the apparatus.
These objects and others will become apparent from the following description.
According to a first aspect, the automatic dispensing apparatus for material paper towels or toilet paper is distinctive in that it comprises a moulded housing made of plastic of which the upper part contains a take-off reel of paper towels or toilet paper, a cutting-blade holder support drum and a tensioning device that ensures feeding of the paper band to the drum and tensioning of the paper, the hinged cutting blade in the drum being moved by cooperation of a toothed heel associated with the shaft of the cutting blade holder and cooperating with a rack device internally fixed on one of the sides of the housing, the drum being associated with a start mechanism, a protective cover hinged relative to the housing and clicking onto the latter, and in that the protective housing is devised with parallel flanges that are perpendicular to the rear plane of the housing in the paper towel version or between a front flange and the rear wall of the housing in the toilet paper dispensing version in order to allow the drum and tensioning device to be fitted by clicking them in, said flanges or rear walls of the apparatus being made with tongues capable of elastic deformation due to preformed elasticity slits on the flanges and/or rear wall of the housing and the front flange also having scalloping to position the ends of the drum shaft.
According to another aspect, the various recesses for the ends of the shafts of the tensioning device of the drum face opposite each other and in that the tongues that receive the tensioning device press, by elasticity, the tensioning device against the drum and ensure that the tensioning device of the drum locks itself into position in the housing of the apparatus and in that unobstructed access to the areas for positioning the tensioning device and the drum is obtained through cutouts made on the front of said tongues and flanges allowin
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Goodman Charles
Rada Rinaldi
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