DE1200246B - Ring brush - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

A46b

German class: 9b-3/12

Number: 1200 246

File number: G 40747 HI / 9 b

Filing date: June 3, 1964

Opening day: September 9, 1965

The invention relates to ring brush, in which the bristle bundle by driving in a conical The handle is attached in the bristle carrier ring, this at the handle-side end by a clamped, at the same time serving as a handle storage lid and the latter from a covering the bristle ends Disk is completed, manufactured according to the method of patent 1,152,382.

A permanent and rigid connection of all tolerances, which are predominantly made of plastic subject components of the brush is achieved in the main patent in that the handle in one narrower bearing hole of a perforated insert washer in the cover plate has been driven in. During this process, the pressure exerted on the filling disc brings about these to break so that they act as loose jaws against the collar engaging in the bristle carrier ring the end cover is pressed, whereby all components of the brush with each other a rigid connection obtain.

However, it has been shown that in this process the contact pressure of the insert washer is relatively must be large in order to ensure a permanent and rigid connection of all components, because not only the insert disc on the lid collar, but also the lid collar the bristle carrier ring must receive a firm adhesion.

In addition, the use of a separate perforated insert disc, which is necessary for their production requires considerable tool costs, relatively expensive, especially since this disc is made of special, Explosible plastic must be made. It has also been found that the demolition of the Insert disk takes place only partially or on one side, so that the insert disk is then only one-sided Exerts pressure.

In order to be able to insert the brush handle through the bundle of bristles into the bearing hole, it is well known that The end of the handle should be sharpened and subsequently blunted due to existing accident prevention regulations will. Blunting the tip of the handle is easy to do with a wooden handle, however not so easy with a so-called insulating brush with a plastic handle.

There are already ring brushes become known in which the conical brush handle in a relatively strongly dimensioned insert washer is driven in and thereby fixed in this. Able to do this but the insert disk does not bring about an intimate connection with the bristle carrier ring.

Ring brush

Addendum to the patent: 1152 382

Applicant:

Rudolf Geitz, Schwelm (Westphalia), Kölner Str. 68

Named as inventor:

Rudolf Geitz, Schwelm (Westphalia)

Furthermore, it is already known to put the handle in the bearing ring of a thin-walled, in the bristle carrier ring engaging end cover to be fastened

ao gen, with the bearing ring for the stem by radiating Stiffeners is stiffened.

This design of the brush allows a solid handle attachment, but this handle attachment can not to connect the end cover intimately with the bristle carrier ring at the same time.

The object of the further development of the invention is to eliminate the disadvantages mentioned and to form the ring brush in such a way that the conical handle in the End cover and this receives a solid attachment in the bristle carrier ring.

This object is achieved according to the invention in that the bearing hole for the conical stem in the End cover has an inner collar extending over the entire height of the end cover, which is connected to the outer edge of the lid by webs arranged in a radial manner.

This design of the ring brush not only simplifies and reduces the cost of its manufacture, because a separate blastable insert disc is saved, but by the plastic inherent elasticity when driving the conical stem into the bearing hole of the end cover his inner collar inevitably rotated, this pressure over the connecting webs of the Cover is transferred directly to the outer edge of the cover, which hereby also a Preserves elongation and presses firmly against the bristle carrier ring.

To this method of attachment also for an insulating brush To be able to use a handle made of plastic, goes according to the invention of

509 660/29

Inside collar on the lid into a hollow plastic handle, into which a pointed piece of handle from the bristle side Is driven in from the end.

When it is driven into the hollow handle, the stem piece causes the end cover to expand in the same way and thus not only a solid attachment of the handle piece in the hollow plastic handle, but at the same time also a solid attachment of the cover plate in the bristle carrier ring. aside from that this training of the brush has the advantage that the subsequent rounding of the pointed end of the stem piece is saved, since the pointed end is protected in the one provided with a blunt end Hollow stem remains.

In order to simplify the production of the brush provided with a handle made of plastic, according to FIG According to the invention, a hollow plastic handle is introduced into the bearing hole of the cover from the end on the bristle side, into the - also from the bristle-side end - drive a sharpened stem piece ao which clamps the hollow plastic handle on the inner or inner and outer collar in the bearing hole.

The subject matter of the invention is shown in the drawings, for example; it shows

F i g. 1 shows a longitudinal section through the ring brush with the sharpened ones driven into the end cover Wooden handle,

Fig. 2 is a bottom view of the cover,

F i g. 3 shows a longitudinal section through a so-called insulating ring brush with one with the end cover integrally manufactured hollow plastic handle before the complete driving in of a sharpened one Wooden handle piece in its end position and

FIG. 4 shows the same longitudinal section as FIG. 3, however with a hollow plastic handle inserted in the cover and a sharpened one driven into it Wooden handle piece.

The bristle carrier 1 made of metal or plastic is ring-shaped in a manner known per se designed. The bristles 2 are by driving the shaft provided with a pointed end 3 in the Fixed bristle carrier ring, the end part of the bristle bundle firmly against the jacket of the bristle carrier ring is pressed. So that the end of the bristle bundle soaked with a binding agent is attached to the The bristle carrier ring 1 receives good adhesion, the contact surface on the bristle carrier ring can advantageously be provided in a known manner with circumferential fine grooves. At the end of the handle of the bristle carrier ring 1 is clamped in this serving as a handle bearing cover 4, in which for better storage of the handle 3, the handle bearing hole S with one extending over the entire height of the lid 4 extending inner collar 4 'is provided. The inner collar 4 'is here through several webs 6 arranged in a radial manner with the outer edge engaging in the bristle carrier ring 1 4 ″ of the cover 4 integrally connected. Since the bearing hole 5 in the cover 4 is narrower than the stem diameter, takes place when driving in the stem, the pointed end of which becomes blunt after driving is, inevitably an expansion of the inner collar 4 '. This stretching pressure becomes inevitable Transferred via the webs 6 to the outer edge 4 "of the cover 4, so that this is firmly against the jacket the bristle carrier ring 1 presses, whereby all components with each other a permanent rigid connection obtain.

In order to increase the adhesion of the pressing surfaces, they can optionally be provided with fine grooves be provided. To cover the lid 4 against the bristle bundle end 2 soaked with binding agent, a thin, smooth disk 7 placed in between can be provided.

In the so-called insulating brushes shown, the hollow handle 8 is made of plastic; the outer The stem end is rounded. The hollow plastic handle 8 can be produced in one piece with the end cover 4 or be drawn in tightly in the cover 4 as a loose part. The stretch of the inner collar 4 'and the outer edge 4 "of the cover 4 is done by driving in a sharpened piece of wooden handle 9 in the narrower inner collar 4 ', which merges into the hollow plastic handle 8, or by driving a sharpened wooden handle piece 9 into the hollow handle drawn into the bearing hole 5 of the cover 4 8. The sharpened wooden handle remains in the cavity 10 of the plastic handle 8, so that a subsequent Blunting of the stem piece end 9 can be saved.

Claims (3)

Patent claims: 1. Ring brush, in which the bristle bundle by driving a conical handle into the bristle carrier ring is attached, this at the end of the handle by a pinched, at the same time as Handle storage serving lid and the latter closed by a disc covering the bristle ends is produced according to the method according to patent 1152 382, characterized in, that the bearing hole (5) for the conical stem (3) in the end cover (4) extends over the entire height of the end cover (4) extending inner collar (4 '), which with the outer edge (4 ") of the lid (4) through radially arranged webs (6) is connected. 2. Ring brush according to claim 1, characterized in that the inner collar (4 ') on the lid (4) merges into a hollow plastic handle (8) into which a pointed handle piece (9) from is driven in the bristle-side end. 3. Ring brush according to claim 1, characterized in that a hollow plastic handle (8) is introduced from the bristle-side end into the bearing hole (5) of the cover (4), in the - also from the bristle-side end - a sharpened stem piece (9) is driven, which the hollow plastic stem (8) on the inner or Inner and outer collar (4 ') clamped in the bearing hole (5). Considered publications:
German utility model No. 1 884 919,
873 129.1 778 215. For this purpose, 1 sheet of drawings 509 660/29 8.65 © Bundesdruckerei Berlin