US2348515A

US2348515A - Brush

Info

Publication number: US2348515A
Application number: US432288A
Authority: US
Inventors: John G Baumgartner
Original assignee: Individual
Current assignee: Individual
Priority date: 1942-02-25
Filing date: 1942-02-25
Publication date: 1944-05-09
Anticipated expiration: 1961-05-09

Description

4 May 9, 1944- J. G. BAUMGARTNER 2,348,515

BRUSH Filed Feb. 725, 1942 @ji/75 ff x Pitentd Ml, 9.9

UNITED STATES PATENT OFFICE BRUSH John G. Baumgartner, Aurora, nl. AApplication February 2s, 1942, serial Nb. 432,288

4 claims. (ci. 15195) l This. invention relates generally to brushes and in particular to a brush adapted for use in applying finger nail liquids, in artists work and the like.

Brushes now commonly used in applying finger nail liquids. paste. glue and the like, and also at such one end to secure the bristles thereto.

A linger gripping portion for these brushes,

' which also serves in many instances as a cap for the container holding `the liquid or paint to befapplied, is generally` provided with a cavity adapted toreceive in frictional engagement the other end of the handle. Because of the thin metal used in the construction ofthe handle, the handle is easily jammed on being inserted within the cavity in the cap or nger gripping portion. As a result the handle voften times is incapable of being frictionally engaged with the cap. Cement, therefore, is usually required to accomplish the securing together oi.' the cap and brush handle. It is` apparent, of course, that on cracking of the cement the handle and cap are readily separable.

A further disadvantage in these prior art brushes is that the handles are generally made come this objection to metal handles have not Y been entirely satisfactory because the plastic is also attacked by lacquer.

Also these brushes whether made with plastic `or metal handles are relatively expensive to manufacture both because ofthe materials utilized in their construction and the large amount of hand work required in their assembly.

It is an object of this invention, therefore,

to provide an improved brush.

invention is found in the provision of a finger nail brush having a wooden handle with one end adapted to have bristles secured directly thereto by staple means.

A further feature of this invention is found in the provision of a brush for applying liquids from within a container, which is provided with a wooden handle having a bristle portion secured directly to one end thereof, and having its opposite end constructed for positive frictional engagement with the cap for the container.

Further objects, features, and advantages of this invention will become apparent from `the following description when taken in connection with the accompanying drawing in which:

Fig. 1 shows in actual size a'complete assembly of the brush of this invention;

Fig. 2 is illustrated similarly to Fig. 1, with a wooden handle with a diameter of about oneeighth of an inch having a bristle portion at one end and a nger gripping portion at the other end thereof.` A -brush of thistype having a wooden handle has never been available commercially because of the many ldiiiiculties encountered in the attempts made to use a wooden handle of 'such small diameter. However, a wooden handle is very desirable from an oper- 'ating standpoint because it is impervious to lacquer and the like, and lfurther is much cheaper in cost than the metal and plastic handles, in the prior art brushes. The matter of cost is very important in these small brushes because very large quantities of them are used every year. Thus any small saving resulting from an improvement in the making of an individual brush assumes large proportions when considered in terms of quantity production.l

Referring to the drawing the brush offthis in. vention is shown in actual size in Fig. land includes a handle vIt) with a bristle portion Il at one end l2 and a nger gripping portion I3 at the other end Il thereof.. Handle lll is composed of wood and from a consideration of Fig. 1

tended axially of the handle.

is seen to be oi a diameter on the order of about one-eighth of an inch.

'I'he end I2 oi the handle I Il (Figs. 3 and 4) is provided with a cavity I8 extending axially therein to a depth which is at least equal to the diameter of the handle I 0. The bristle portion II is receivable within the cavity I8 and is secured directly to the handle I by a staple I'I straddling the bristle -portion II and inserted within the cavity I6 for anchoring at the bottom I8 thereof.- The staple I'I is located entirely within the handle I Il with the leg portions thereof ex- The bottom I8 of the cavity I8 is of a substantially concave form to accommodate the bristle portion I I and provide for a more firm holding of the bristle portion by the staple Il.v By virtue of the depth of the cavity I6 all of the bristles in the bristle portion II are retained or guided by the wall of the cavity so as to extend substantially axially outwardly from the handle end I2 to form a single tuft at such end.

In the use of the brush, on dipping of the bristle portion II within the liquid to be applied, `\the end I2 of the handle I0 is often times also dippedl" With an end I2 of straight form the liquid running oi the handle I0 accumulates at the end I2 in droplet form, and either dries` at such end or drops oi the end at a point remote from the point oi liquid application. 'This acform with the open end thereof counterbored an tion of the accumulated liquid is eliminated in the present invention by rounding the 'outer periphery of the handle I0 at the end I2, as indicated at I5, to provide for a flow of the liquid from the handle to the point of application at the bristle portion II. The handle end I2 is i thus always retained clean and free of any liquid accumulation.

The end I 4 of the handle. III is an axially extending slot I9 dividing the end I4 provided with into portions 2l and 22 for a purpose to be later i explained (Figs. 2 and 4).

The linger gripping portion I3, is of a construction such that it may be used as a cap or a cover for a bottle or the like 23 containing the liquid to be applied by the brush. l Although the for use on a bottle for iinger nail liquids it is to be understood that the invention is not to be so limited since other types of finger gripping portions may be utilized with the handle I8 and bristle portion II. It is obvious also that the brush is completely operative without the portion I3.` The finger portion I3 is formed with a p eripherally threaded bore 24 adapted for threaded engagement with the threaded neck portion 26 of the bottle`23 (Figs. 3 and 4).v In concentric arrangement with the bore 24 and extended axially` thereof is a projection 2l having an axial cavity 28 therein. 2

The end I4 of the handle is of a diameter cor,- responding substantially to the diameter of the cavity 28. As shown in Fig. 4 the cavity 28 is of a tapered form inwardly thereof so that the handle end I4 is readily received at the open end Afinger gripping' portion is illustrated as adapted portion receivable in said cavity,

centered at one end amount suiiicient to initially receive the handle end Ilfor insertion within the cavity. On the continued movement ofthe handle end I8 withl plying finger nail liquids or adapted for'use in line painting work and the like which is rugged in construction and relatively inexpensive in cost. Although the handle is of a relatively small diameter it is completely rigid over its entire length. Since it is not attacked by the lacquer co'mmonly used in linger nail liquids andpaints its rigidity is retained over its entire service life. In fact the lacquer tends to preserve the wood so as to prolong its normal service life. The direct connection of a bristle portion at one end of the handle by a staple, and of a nger gripping portion at the other end of the handle in a frictional engagement simplifies and speeds up the assembly of the brush and appreciably reduces the number of manual operations required in such assembly. By virtue of the savings in assembly.

reference to a speciiic embodiment thereof it is to be understood that it is not to be so limited since changes can be made therein which are within the full intended scope of this invention as defined by the appended claims. y

I claim:

l. A brush including a wooden handle of relatively small diameter having an axially extending cavity at one end thereof, with the wall of said cavity being straight over its axial length, and said cavity having a diameter equal substantially to twice the thickness of'sai wall, a bristle and a staple inserted entirely within said cavity and chored in the-bottom of said cavity for sec i g said bristle portion directly to said handle.

2. A brush including a wooden handle having a diameter on the order of one eighth of an inch, said handle having an axially extending cavity thereof, said cavity having an axial length equal to substantially the diameter of said wooden handle, with the wall of said cavity being of a straight form over the complete axial length thereof, and said cavity having a diameter equal thickness of said Wall, a bristle portion receivable in said cavity. and means anchored ih the bottom of said cavity and engaged with said bristle portion to hold the bristle portion in said cavity,

approximately to double the tegral with said wooden member and having an outside surface of substantially the same contour and size as the adjacent portion f of the wooden member, bristles extending into said bored cavity to the bottom thereof, and a staple having legs frictionally secured in said wooden member at the bottom of the bored cavity and securing said bristles. with said thin cylindrical wall supporting said bristles for extension outwardly from said one end of the wooden member in a direction substantially axially thereof.

4. A brush including a wooden member of relatively small diameter having a cylindrical bore in one end extending axially thereof, said wooden member including integral therewith a relatively thin wall of -substantially the same thickness over its length and constituting the wall dening the cylindrical bore, bristles extending into said bore. and a staple for securing said bristles to said wooden member straddling said bristles and having legs anchored in the wooden member at the bottom of said cylindrical bore, with the wall of said bore acting to support said bristles so that they extend in a substantially axial direction from the one end of the wooden member.

JOHN G. BAUMGARTNER.