DE7229792U - Flat-wire brooms, in particular for street cleaning - Google Patents

Description

Flat-wire brooms, in particular for street cleaning

The innovation concerns brooms that are equipped with wire, which is inserted in the form of bundles into the broom body and from there Security organs are detained, of particular importance are those with wire-tipped brooms for street cleaning, where the rotary brushes or those used as rinnate brooms Disc brooms are exposed to particularly heavy loads. A set of flat wire is usually used as the trim either inserted into the aluminum broom body and replaced after it has worn out, or in disposable pieces Wood or plastic can be punched into saok holes in these cheaper broom bodies by machine, compare the utility models from applicant no. 7 141 656 and 7 201 049ο Instead of flat wire fittings, in the interests of all-round good ones Flexibility, combined with high breaking strength and durability, also proposed as a cladding wire bundled steel wire

Dr. REINHOLD SCHMIDT, 7603 OPPENAU, PO Box 25, Allmendplatz 4, phone (07804) 710

to use stranded wire that is suitable for all types of brooms, compare the applicant's further utility model No. 7 141 655t

In practical operation it has now been found that, especially for street cleaning purposes, all of these previously known cutlery materials sometimes do not have the required rigidity to loosen and sweep away heavy soiling from a base. Of course, you can always increase the rigidity by increasing the wire thickness, but then there is an unfavorable relationship to the price of the trimmings, and it is becoming increasingly difficult to pull the material into the broom body, be it by hand or by machine ; and cutlery made of stranded steel wire occasionally tends to be zsjQ. Turn up,

The steel wire trimming that has proven itself best for heavy use also has the undesirable peculiarity that becomes more obvious the larger the wire thickness, that it has its best sweeping effect in the direction at right angles to its actual surface, but that when subjected to stress in its own surface direction or approaches this direction too strongly, the wire becomes harder and harder and tends to break as a result not only does the sweeping work of such a flat wire

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sentence, but also by hand or machine taking place drawing in and punching in the different broom bodies is due to this directional difference difficult in behavior towards bending forces.

The aim of the innovation is to find a solution that is suitable for all types of brooms, but especially for brooms used for street cleaning that are heavily used To create cutlery material with a long service life, which is free from the deficiencies of the cutlery materials described, can exert a high sweeping effect in all directions and move perfectly into the broom body even with high rigidity leaves",

: According to the engagement one goes for this purpose from the in itself for It is best to use tried and tested flat wire material for heavy use, but use this for the equipment of the broom body in the form of bundles of helically twisted thread.

Such a broom trimmings, which; depending on the stress, from more or less thick flat wire is made, as a result of its helical coiling, has one in all directions evenly distributed flexural strength and elasticity. The trimmings do not smoke when they are pulled in and punched into the broom.

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body, still, when using in the broom or in the Ke hrm ag ο nine Be considerate of a preferred direction in which the flat side of the wire lies; because such a preferred Direction is no longer available »Due to the spiral twist, the wire adapts itself to all stresses acting on it any direction automatically to these stresses and their directions. It is enough for the coiled one Flat wire to choose a relatively small thickness, and still a much larger one - and also on all sides Evenly distributed - to get stiffness, which can be achieved e.g. when using stranded wire with much higher Material thicknessη would have to work at a correspondingly high cost.

The twisted flat wire, like the known strand, by hand or by machine in any broom body made of metal or wood and just like the strand; anchor with the same holding devices.

One embodiment shows a wooden broom body, in which the bundles of helically twisted flat wire are drawn in as trimmings. The flat wire is an oil-hardened one Steel wire 0.45 mm thick and 2.8 mm wide. This wire is about two full turns over a length of approx. 10 cm twisted.

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Depending on requirements, tons of?: Ven «r: stick _; especially the rigidity, both through the choice of the flat wire material (preferably metal, possibly also bare drawn wire), through its dimensions (thickness and width), as well as through the number of its coils per unit of length can be varied and adapted to all requirements. The kits of the broom body and securing the bundle used in a known manner, as is described, for example in the above mentioned older utility models ₀ and displayed.

S chutζ entitlement ;

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Claims (1)

'■■■■ ζ S c h u t claim Flat-wire brooms, in particular for street cleaning, characterized in that the cutlery material consists of bundles consists of helically twisted flat wire " 722979223.11.72