US3751751A

US3751751A - Student{40 s and artist{40 s paint brushes

Info

Publication number: US3751751A
Application number: US00206100A
Authority: US
Inventors: G Karl
Original assignee: Individual
Current assignee: Individual
Priority date: 1970-12-21
Filing date: 1971-12-08
Publication date: 1973-08-14
Anticipated expiration: 1990-08-14
Also published as: GB1330556A; FR2119389A5; NL7117437A; CH545082A; DE2062815A1; IT944181B; BE776334A

Abstract

To enable the usual ferrule of a student''s or artist''s painting brush to be made of a plastics material, and to provide for secure anchorage of the usual hair or bristle tuft into said ferrule, the latter accommodates a metal insert which surrounds one end of the tuft and is firmly located in the ferrule, such insert constituting an element to which the tuft can be reliably adhered.

Description

United States Patent 9 Karl Aug. 14, 1973 56] References Cited UNITED STATES PATENTS 573,711 12/1896 Schuck 15/192 1,694,364 12/1928 Albright, 3d 15/192 2,122,980 7/1938 3,432,874 3/1969 3,641,611 2/1972 Primary ExaminerPeter Feldman Attorney-Kenwood Ross and Chester Eli 1 1a yiri ABSTRACT To enable the usual ferrule of a students or artist's painting brush to be made of a plastics material, and to provide for secure anchorage of the usual hair or bristle tuft into said ferrule, the latter accommodates a metal insert which surrounds one end of the tuft and is firmly located in the ferrule, such insert constituting an element to which the tuft can be reliably adhered.

1 Claim, 5 Drawing Figures 1 STUDENT'S AND ARTIST'Q PAINT BRUSHES This invention concerns students and artists painting brushes.

Students and artists painting brushes normally comprise a handle that is comfortable to hold in the hand, a ferrule fastened to the handle and a tuft of hairs or bristles inserted securely in the ferrule. It is usual for the handle to be made from wood and the ferrule to be made from sheet metal. According to the shape, there are two general types, namely round brushes and flat brushes. In the case of round brushes it has already been proposed to produce both the handle and the ferrule from a plastics material. Polystyrene has been used as such material.

Polystyrene ferrules are, however, not resistant to corrosive substances which are often contained in paint. This couldbe combated by using, for the ferrule, a plastics material which resists the corrosive substances in the paint. Consequently, thought could be given to producing the ferrule from polyethylene or polypropylene. However, this has not been practicable because hitherto it has not been possible to stick the tuft of hair or bristles fast in a polyethylene or polypropylene ferrule. To remedy this and, in addition, to ensure that the plastic ferrule can subsequently be coldformed to enable it to be brought into the shape of a flat brush, is the object of the invention.

With this object in view, thepresent invention provides a students or artists painting brush comprising a handle, a ferrule of plastics material secured'to one end of said handle, a bristle tuft secured by one end into said ferrule, and a metal insert located in said ferrule, and surrounding said one end of said bristle tuft, and serving to anchor said bristle tuft to said ferrule.

The tuft of hair or bristles can be securely anchored to the metal insert by adhesion, that is to say by glueing-in, so that, since the metal insert is located securely in the ferrule, the tuft itself is connected virtually nonreleasably to the latter. By means of the metal insert, the prerequisite is provided that the tuft of hair or bristles can be fastened satisfactorily in the plastics ferrule.

Furthermore, if the ferrule consists of a paintresistant material, for instance of the nature of polypropylene or of the co-polymer known under the trade name Hostaformf' the problem which hitherto seemed insuperable, namely that of providing a corrosion-resistant plastics ferrule in whichthe tuft of hair or bristles is secured by adhesion, is solved.

A design which is particularly favourable in production is achieved if the plastics ferrule is designed as a body of rotation having at least one tuft-insertion aperture in its free end.

From such a plastic ferrule, formed as a body of revolution, a flat brush ferrule, can be obtained in a simple way, in accordance with a further feature of the invention, by the plastics ferrule, together with the metal insert and the inserted (more especially glued-in) tuft of hair or bristles, is cold-formed to the desired flattened configuration. In this connection it is particularly advantageous if the metal insert is in the form of a circular ring, tube or cylinder.

The invention will be described further, by way of example, with reference to the accompanying drawings,

in which:

FIG. 1 illustrates a conventional or known form of flat brush having a sheet metal ferrule and a wooden handle, the brush being shown in a front view and a side view;

FIG. 2 is a part sectional side view showing diagrammatically, a plastics handle and a plastics ferrule, being components of a painting brush conforming to the present invention;

FIG. 3 is a part-sectional side view, of the ferrule of FIG. 2, this figure showing that the ferrule incorporates, in the holding region of the tuft of hair or bristles (not shown), a circular metal insert;

FIG. 4 is an enlarged fragmentary sectional view showing details of the upper part of the ferrule shown in FIG. 3; and

FIG. 5 illustrates the eventual or finished form of the brush, the upper part of which is shown in a front view and a side view.

Referring firstly to FIG. 1, in conventional or known forms of students or artists painting brushes it is customary to work the tufts of hair or bristles into a metal ferrule I and to connect the latter securely to a handle 2 made of wood.

This principle of construction has been retained in the case of brushes having plastics handles in accordance with the invention. As shown in FIG. 2, a ferrule la is securely mounted, by a spigot and socket connection, on the plastics handle 2a. The ferrule la is designed as a body of revolution.

Located securely in the holding region 4 of the tuft 5 of hair or bristles, in the ferrule la (which consists, by way of example, of polypropylene or the co-polymer known under the trade name Hostaforrn") is a metal ring 6 (FIGS. 3, 4). The inner surface 7 lies flush with the inner surface 8 of the plastics ferrule la. By reason of this design, the tuft 5 of hair or bristles, in the holding region 4, is located in direct contact against the inner surface 7 of the ring 6 and is anchored, by means of adhesive, securely to the metal ring 6.

The plastics ferrule 11: which is formed as a body of revolution, as shown in FIGS. 3 and 4, together with the metal ring 6 and the glued-in tuft 5 of hair or bristles, can be cold-formed, by application of pressure at two opposing sides of the free end of the ferrule la to form it into the'flat configuration shown in FIG. 5.

Although the above description relative to FIGS. 2 to 5 of the drawings disclose a preferred embodiment of the students or artists painting brush of the invention, and the manner in which it is made, it is to be understood that variations may be made to the details thereof without departing from the scope of the invention as defined by the following claims.

I claim:

I. A painting brush comprising: a handle, a ferrule of plastics material secured to one end of the handle and having an inner surface provided with an annular ringreceiving recess, a bristle tuft secured by one end into the ferrule, and a metal annular ring located in the recess of the ferrule and having an inner surface flush with the inner surface of the ferrule and surrounding the one end of the bristle tuft and serving to anchor the bristle tuft to the ferrule.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,751,751 Dated August 14, 1973 Inventor(s) Georg Karl It is certified that error-appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

On title page, at; item [76 7 change "George Karl" to "Georg Karl Signed I ahd sealed this 20th day of November 1973.

(SEAL) Attestt EDWARD M.FLETCHER,JR. RENE D. TEGIMEYER Attesting Officer Acting Commissioner of Patents FORM PO-105O (10 69) USCOMM-DC 60376-P69 as. GOVERNMENT PRINTING OFFICE rises 0-366-334.

Claims

1. A painting brush comprising: a handle, a ferrule of plastics material secured to one end of the handle and having an inner surface provided with an annular ring-receiving recess, a bristle tuft secured by one end into the ferrule, and a metal annular ring located in the recess of the ferrule and having an inner surface flush with the inner surface of the ferrule and surrounding the one end of the bristle tuft and serving to anchor the bristle tuft to the ferrule.