US2874399A

US2874399A - Brush construction

Info

Publication number: US2874399A
Application number: US371042A
Authority: US
Inventors: Friedman Solomon
Original assignee: Osborn Manufacturing Corp
Current assignee: Osborn Manufacturing Corp
Priority date: 1953-07-29
Filing date: 1953-07-29
Publication date: 1959-02-24
Anticipated expiration: 1976-02-24

Description

' Feb. 24, 1959 s; \FRIEDMAN 2,874,399 BRUSH CONSTRUCTION Filed JuZLy 29, 1953 INVENTOR. 50LOM0/V F/Y/EDMQ BY I Maw TTOP/VEYS.

United States Patent "ice 2,874,399 BRUSH CONSTRUCTION Solomon Friedman, Brooklyn, N. Y., assignor to The Osborn Manufacturing Company, Cleveland, 01110, a corporation of Ohio Application July 29, 953, Serial No. 371,042

1 Claim. (Cl-.- 15-169) This invention relates as indicated to novel brush construction, and more particularly to certain types of end brushes, usually hand brushes such as glue and paint brushes.

The usual hand brushes for applying glue, for example, comprise a tuft or bundle of bristles, the butt ends of which may be set in rubber or the like and secured within an annular metal ferrule fixed to the end of a wooden handle. In order to obtain certain desired degrees of flexibility of the bristle material in use, it has become customary to provide a bridle in the form of a twisted wire ring encircling the bundle of bristles at a point spaced from the ferrule usually about one-third the length of the exposed bristle tuft from such ferrule. The wire is wrapped tightly around the bundle of bristles and may be retained in position by means of metal tabs secured in the ferrule and clinched over the loop of wire. Such bridles are expensive of manufacture for the reason that they are applied by hand, involving several operations, and furthermore the attainable results are restricted to those producible by a fairly tightly wrapped bridle. The bundle of bristles is of necessity tightly compacted in the region of such bridle, restricting the flexing of the bristles between the bridle and the ferrule more than may ordinarily be desired. The principal reason for desiring a bridle at all is to obtain adequate control of the bundle of bristles in use when the latter is employed for the application of glue, for example, or subjected to a scrubbing action in the application of paint to a stencil while at the same time permitting a degree of flexibility to the inner portions of the bristles intermediate the bridle and ferrule. As above indicated, the usual bridle falls short of achieving this principal objective.

Such glue brushes and also the usual paint brushes have another common failing in that after having been used for a period glue or paint or other brush-applied materials tend to accumulate between the.bristles in the region adjacent the ferrule, and this material is'seldom entirely removed by the usual cleaning operations. Accordingly, this portion of the bristle body shortly becomes stifi and substantially rigid, greatly changing the action of the brush in use. In consequence, many paint brushes are thrown away long before they are worn out. Ohviously it is desirable to prevent this to the extent possible.

In view of the foregoing, it is one of the objects of my invention to provide a novel bridle for hand brushes which will adequately support the brush material in use while at the same time affording the desired degree of flexibility and relative movement to the inner end portions of the bristles.

A further object is to provide a drip lip for my new bridle which will assist in guarding against the tendency of paint to flow back to the inner end portions of the bristles and stiffen the same where exposed in the region intermediate the bridle and ferrule.

Other objects will appear as the description proceeds.

Patented Feb. 24', 1959 To the accomplishment of the foregoing and related ends, said invention then comprises the features hereinafter fully described and particularly pointed out in the claim, the following description and the annexed drawing sitting'forth in detail certain illustrative embodiments of the invention, these being indicative, however, of but a few of the various ways in which the principle of the invention may be employed.

In said annexed drawing:

Fig. 1 illustrates a painters brush with a removable bridle embodying my invention;

Fig. 2 is a side view of the Fig. l assembly showing the hinge on such bridle;

Fig. 3 is a view of the other side of the Fig. 1 assembly showing the catch on such bridle.

Referring now more particularly to said annexed drawing, the embodiment there illustrated shows a paint brush, chip brush or the like having a wooden handle portion 2'? to which brush material 28 is secured within the usual sheet metal ferrule 29. The sheet metal bridle member comprises two

portions

30 and 31 hingedly joined at 32 and embracing ferrule 29. An ordinary snap catch 33 may be provided at the other side of the brush from hinge 32 to secure the bridle in place. Holes such as 34, 35 and 36 are punched in the bridle in longituclinal alignment to receive dimples such as 37 struck up from ferrule 29, thereby to, retain the bridle member in a selected adjusted position relative to the ferrule and the brush material protruding therefrom.

Not only is the bridle member obviously of somewhat larger dimensions than the ferrule 2% for the greater part of its extent, but also

lateral regions

38 and 39 may be deformed outwardly so as not to bear against and restrict movement of the brush bristle material where the latter enters the ferrule. The true bridle is formed by the some what more constricted neck portion 40, preferably having an outwardly flaring drip lip 41, and this neck may be dimensioned to afford the degree of restriction to brush bristle movement desired. In contrast to bridles previously employed in the art, however, I prefer that such bridle should not tightly constrict the brush bristle ma terial, at least not to an extent preventing relative move-' ment of the inner end portions of the bristles. If de-, sired, a rubber band may be snapped around constricted neck 49 of the bridle to supplement catch 33. Also, the bridle may be wrapped in masking tape, if desired, likewise to hold the same in closed position and facilitating cleaning of the bridle after use since the tape may merely be stripped therefrom.

Since the bridle illustrated in the drawing is adapted for axial adjustment as desired, a varying degree of effective bristle length may be obtained, yet without unduly compressing such bristles in the region of the bridle proper.

The ferrule and bridle will ordinarily be of thin sheet metal but obviously certain plastic or fiber sheet material may instead be employed.

I have thus provided a novel brush assembly including a bridle which is adapted to leave the inner end portions of the brush bristles free for a certain degree of interaction while at the same time surrounding and controlling suchbrush material in a region spaced from the ferrule. The bridle may be made both adjustable and removable as shown, facilitating cleaning of the brush and permitting the obtaining of various degrees of stiffness of the brush material. My new construction is useful not only with glue brushes but also with certain stencil bnlshes, paint and varnish brushes, and chip brushes, for example.

Other modes of applying the principle of the invention may be employed, change being made as regards the details described, provided the features stated in the following claim or the equivalent of such be employed.

I therefore particularly point out and distinctly claim as my invention:

In a hand brush having an elongated handle, a bundle of brush bristle material extending axially therefrom, and a sheet metal ferrule encircling one end of said handle and one end of said bundle of brush material with the latter protruding therefrom; a sheet metal bridle closely encircling said ferruleand extending therebeyond to contact and restrain said brush bristle material, said bridle comprising two hingedly connected portions, snap means adapted to secure said portions together embracing said ferrule, said bridle being provided with a plurality of small openings and said ferrule with correspond ing protuberances adapted to interengage to hold said ferrule in selected adjusted axial position relative to said ferrule, the sides of said bridle in the region directly overlying said brush bristle material being deformed outwardly to avoid engagement with said brush bristle material, and a constricted neck at the extreme end of said bridle adapted to embrace said brush bristle material and restrict movement thereof without tightly compressing the same, said constricted neck portion terminating in an outwardly flaring peripheral flange adapted to serve as a drip lip and a retainer means for a rubber band or other securing means which may be placed thereabout.

References Cited in the file of this patent UNITED STATES PATENTS 74,224 Hergesheimer Feb. 11, 1868 107,200 Shuttleworth Sept. 6, 1870 801,027 Lockery Oct. 3, 1905 1,390,881 Cantor Sept. 13, 1921 2,345,991 Rishel Apr. 4, 1944 2,419,899 Kantor Apr. 29, 1947