US3895877A

US3895877A - Applicator brush and method of making same

Info

Publication number: US3895877A
Application number: US338384A
Authority: US
Inventors: Kenneth A Fomby
Original assignee: Individual
Current assignee: Individual
Priority date: 1973-03-05
Filing date: 1973-03-05
Publication date: 1975-07-22
Anticipated expiration: 1992-07-22

Abstract

An applicator brush handle with a self contained attachment cap for sealing a container, with the cap closing the container in air tight relation, when not in use, and with the handle extending upward from the cap, which handle and cap are molded integrally to eliminate assembly. The brush has a ferrule therearound and may be readily attached to the end of the handle so as to project into the container when not in use, and the cap or cover may be readily removed, as by unscrewing, or the like, when it is desirable to use the material within the container, such as glue, cement, paint or other liquid to be coated onto a surface. Provision is made for embedding a metallic lid insert into the mold cavity and injecting plastic material thereinto so that the metallic cap will be rigidly affixed to the handle and to the portion to which the brush bristles are affixed. Further provision is made for molding the cap or cover integrally with the handle and with the portion to which the brush bristles are attached. Further provision is made to mold a socket in the stem to receive the brush bristles.

Description

United States Patent 1 1 Fomby APPLICATOR BRUSH AND METHOD OF MAKING SAME Kenneth A. Fomby, c/o K & D Tooling & Machine, 402 Lindsay St., Gainesville, Tex. 76240 [22] Filed: Mar. 5, 1973 [21] Appl. No.: 338,384

[76] Inventor:

[52] US. Cl 401/129; 15/248 R; 15/171;

264/243; 300/21 [51] Int. Cl. A46b 3/02; A46b 11/00 [58] Field of Search 15/19l-194,

15/171, 248 R, 257.05; 206/15.1 B; 264/243, 267, 273; 403/274, 349; 425/129 R; 401/121, 122, 126-130 July 22, 1975 Primary Examiner-Daniel Blum Attorney, Agent, or Firm-Wayland D. Keith [57] ABSTRACT An applicator brush handle with a self contained attachment cap for sealing a container, with the cap closing the container in air tight relation, when not in use, and with the handle extending upward from the cap, which handle and cap are molded integrally to eliminate assembly. The brush has a ferrule therearound and may be readily attached to the end of the handle so as to project into the container when not in use, and the cap or cover may be readily removed, as by unscrewing, or the like, when it is desirable to use the material within the container, such as glue, cement, paint or other liquid to be coated onto a surface. Provision is made for embedding a metallic lid insert into the mold cavity and injecting plastic material .thereinto so that the metallic cap will be rigidly affixed to the handle and to the portion to which the brush bristles are affixed. Further provision is made for molding the cap or cover integrally with the handle and with the portion to which the brush bristles are attached. Further provision is made to mold a socket in the stem to receive the brush bristles.

2 Claims, 7 Drawing Figures APPLICATOR BRUSH AND METHOD OF MAKING SAME BRIEF SUMMARY OF THE INVENTION This invention relates to a self contained applicator brush. a closure cap for a receptacle and a handle to enable a substantial portion of the brush handle, the closure cap and the brush receiving stem to be molded in assembled relation, thereby to avoid hand assembly of the several parts of the device, thus creating greater efficiency in the manufacture, and the molding of several of the parts integrally insures the rigidity of the device and enables the parts to be maintained in substan tially unitary relation.

OBJECTS OF THE INVENTION An object of this invention is to provide a method of molding a brush handle, a metallic container can or closure, a brush stem, with certain configurations on the brush holder so the brush bristles may be attached thereto.

Another object of the invention is to provide an integrally molded brush handle, a metallic screw cap or closure, and a brush bristle holder portion on the opposite side of the metallic cap or closure to receive brush bristles.

A further object of the invention is to provide a plastic handle and a stem portion ofa brush, to which brush bristles are attached, which are molded integrally within a metallic screw cap or closure and are anchored thereto against longitudinal or rotary movement.

BRIEF DESCRIPTION OF THE DRAWINGS In the drawing:

FIG. I is a side elevational view of a brush handle, a metallic screw cap and a brush stem with bristles attached thereto. with the metallic screw cap surround ing the plastic brush handle and stem element in unitary anchored relation, showing a container, in dashed outline. as associated therewith;

FIG. 2 is a fragmentary clevational view of a portion of the brush handle and brush stem, showing the metallic cap or cover anchored in fixed relation thereto, with parts being broken away and with parts being shown in section to bring out the details of construction;

FIG. 3 is a sectional view taken on the line 3-3 of FIG. I, looking in the direction indicated by the arrows;

FIG. 4 is a side elevational view similar to FIG. I, but of a modified form of the invention;

FIG. 5 is a top plan view of the modified form of the invention:

FIG. 6 is an exploded, elevational view of the invention, with parts being broken away and with parts being shown in section to show the details of construction; and

FIG. 7 is a fragmentary elevation view, with parts broken away and with parts shown in section. to show the attachment of the brush to the hollow brush stem.

DETAILED DESCRIPTION OF THE INVENTION With more detailed reference to the drawing in which like reference characters designate like parts in the several views thereof, the numeral I designates generally a composite brush. a metallic screw cap and a handle, for attachment to a container 2. The cap or cover 4, in the present instance, is shown to be screw threaded to be complementally received on the container 2. The contents of the container 2 may be glue, cement, paint or other liquid to be applied with a brush.

The cap or cover 4 is centrally apertured, as indicated at 6, which aperture has one or more notches 8 formed therear'ound within the cover 4, which notches extend outward from the central aperture 6 to form an anchor with the plastic material being molded thereinto and therethrough to maintain the cover 4 against relative movement with respect to the handle 10 and the stem 12,"as indicated at 14 and as will best be seen in FIG. 3. The handle 10 preferably has ridges 11 formed thereon to increase the friction when the handle is gripped for turning, when the material contained in the container 2 is to be applied to a surface by means of the brush.

The metallic cap or cover 4 is shown to be screw threaded, as indicated at 16, however, other conventional fastening means may be employed and still be within the purview of the invention, and the fastening means is not to be considered as limited to threads. The metallic cover 4 preferably has serrations or a roughened portion 18 to allow the cap to be gripped and turned for ready removal thereof from the container, which cap includes the entire unit 1. The cap 4 has an apertured gasket 20 therein, which gasket may be of oiled paper, fiber or other suitable material that is compatible with the liquid within the container 2, with which it isto be used.

The cap 4 and gasket 20 are inserted into a mold cavity into which mold cavity plastic molding material is directed so that the mold cavity will be filled with plastic, to mold the handle 10, andstem l2,'with'an annular groove 22 one end and with

bosses

24 and 26 formed thereon intermediate the length of the handle 10 and stem 12, with the boss 24 being'located on one sideof the metallic cap or cover 4 and with the boss 2'6being located on the opposite side of the'metallic cap or cover 4, with the gasket 20 being intermediate the cap 4 and the boss 26, so as to firmly hold the metallic cover against longitudinal movement, after the plastic becomes hardened. The mold cavity is normally filled with-thermo-plastic, which is injected in liquid form and which will harden upon cooling, however, any type of plastic which will harden in any manner is within the purview of the present invention.

With the metallic cover or cap 4 molded intermediate the length of the handle 10 and stem 12, a brush, which has bristles 28 inserted within a metallic ferrule 30. The upper portion of the bristles 28 are normally set within cement or a binder as shown at 66 FIG. 6, and crimp rolls or knurles 32 are applied to the ferrule to bindingly engage the ferrule 30 with the bristles 28, whereupon the hollow portion of the ferrule is moved upwardly onto the stern portion 12 to the desired position thereon and indentations 34 made in the metallic ferrule 30, which indentations are so formed as to register with the annular groove 22 in the stem 12 to anchor the brush against movement with respect to the ferrule 30. The ferrule 30 fixedly secures the brush in place on the unit, which unit is readily attachable to a container 2. as shown in FIG. 1.

While the present handle 10 and stem 12 have been shown to be round, as a matter of disclosure, it is to be understood that these portions may be made in any de sired configuration, with the aperture within the cap or cover 4 being of complementary shape.

MODIFIED FORM OF THE INVENTION A modified form of the invention is shown in FIGS. 4 through 7. This form of the'invention has a unitary plastic handle, cover and brush stem molded interally, with a bristle brush mounted therein, which unit is designated generally by the numeral 51, and has the plastic handle, the cap or cover and the brush stem, having a socket therein, molded interally and is designated generally by the numeral 52. The plastic unit 52 has a handle 54 on the upper end thereof, with ribs 56 spaced therearound to enable the handle to be readily gripped, A cap or cover 58 is molded integrally with the handle and is preferably threaded, as indicated at 60, with a stem 62 extending downward therebelow. The lower end' of the stem 62 has a socket 64 formed therein to receive a bonded portion 66 of brush 68. The bristles of the brush 68 are bonded together by cement, with the cementous bonded portion, as indicated at 66 being fully received in a complementary socket 64 of the stem 62 so when the lower edge 70 of the socket is crimped by a heated tool to curve under, as indicated at 72 the bonded portion 66 of the brush 68 is firmly secured to the stem 62, In order to further stabilize the brush within the socket 64 a rivet 74 is passed through the cementous portion 66, A gasket 76, which may be of fiber, paper rubber, or other suitable material, is fitted within the upper portion of the cap 58 to seal against the top of the container, such as the container shown in FIG. 1.

The present brush arrangement serves the same purpose as the above described arrangement, however the present brush 1 is constructed of only two major parts, therefore requiresless time toassemble and will stand rough usage without disintegrating. The handle 54 and stem 62, are hollow, as indicated at 78, above the socket 64, w,hich gives a substantially uniform cross section for molding and requires lessplasticmaterial, and gives a handle and brush of lighter weight.

I claim: v

1. A method of making an applicator brush for a container, comprising the steps of;

a. providing a mold cavity having a portion to receive plastic to integrally form a handle and a stem portion, which stem portion is to receive a brush thereon,

l. introducing molding material into the mold cavity,

2. said stem portion and said handle portion being -in'tegrally molded with a container cover positioned within the length of said handle portion and said stem portion, 7

b. providing a brush for attachment to the end of said stem portion,

1. providing said cover with a central aperture, with at least a portion of the aperture being noncircular so the moldable plastic introduced through the non-circular aperture will extend therethrough to lock said cover against rotational movement with respect to the handle, and

2, forming a boss of plastic integrally with said stem and said handle on each side of said container cover to restrain the cover against relative longitudinal movement with respect to the handle and the stem.

2. A applicator brush for use with a container, which brush comprises;

a. a handle and a brush stem integrally molded of plastic,

b. a brush secured to the end of said stem portion,

c. a container cover positioned intermediate the length of said handle and said stem portions of said brush,

Lsaid container cover being centrally apertured, a portion of said aperture being non-circular,

2. said integrally formed handle and brush stem having a plastic boss formed on each portion thereof, which bosses are respectively integral withthe handle and stem and being in abutting relation with each side of said cover to maintain said cover against relative longitudinal movement with respect thereto.

Claims

1. A method of making an applicator brush for a container, comprising the steps of; a. providing a mold cavity having a portion to receive plastic to integrally form a handle and a stem portion, which stem portion is to receive a brush thereon, 1. introducing molding material into the mold cavity, 2. said stem portion and said handle portion being integrally molded with a container cover positioned within the length of said handle portion and said stem portion, b. providing a brush for attachment to the end of said stem portion, 1. providing said cover with a central aperture, with at least a portion of the aperture being non-circular so the moldable plastic introduced through the non-circular aperture will extend therethrough to lock said cover against rotational movement with respect to the handle, and 2. forming a boss of plastic integrally with said stem and said handle on each side of said container cover to restrain the cover against relative longitudinal movement with respect to the handle and the stem.

2. said integrally formed handle and brush stem having a plastic boss formed on each portion thereof, which bosses are respectively integral with the handle and stem and being in abutting relation with each side of said cover to maintain said cover against relative longitudinal movement with respect thereto.

2. A applicator brush for use with a container, which brush comprises; a. a handle and a brush stem integrally molded of plastic, b. a brush secured to the end of said stem portion, c. a container cover positioned intermediate the length of said handle and said stem portions of said brush,

2. forming a boss of plastic integrally with said stem and said handle on each side of said container cover to restrain the cover against relative longitudinal movement with respect to the handle and the stem.

2. said stem portion and said handle portion being integrally molded with a container cover positioned within the length of said handle portion and said stem portion, b. providing a brush for attachment to the end of said stem portion,