US2274002A - Paint brush - Google Patents

Description

Fb. 24, 1942 A L sALTzMAN 2,274,002

PAINTvBRUSH Filed March 21, 1940 FIGA.

` um 12 um Ulmy n WM M .MNM um ATTORNEY 7 TOR AUGUSTE L. SALTZMAN Patented Feb. 24, 1942v f f y j i l 2,274,002

`UNLTED STATES PATENT *foi-FICE Auguste L. Saltzman, Orange, N. J., assig'nor to` Rubberset Company, Newark, N..J., a corporation of New .Jersey Application March-21, 1940, lSerial No. 325,123

5 claims. (o1. 15p-193) This invention relates to 'an improved paint brush and more particularly to the formation of the ferrule of such a brush and the relationship thereof to the bristle knot or brushing body.

A feature of the invention is the formation of the lower end of the ferrule of a paint brush to provide rm, interlocking ridges and depressions parallel with the bristles. Thus, interlocking elements are provided on the ferrule and bristle knot which will effectively prevent both transverse and longitudinal shifting of the bristles relative to the ferrule without danger of displacing any portion of the bristles from the main body.

More specically the invention contemplates, in its preferred form, the provision of a plurality of beads extending around the ferrule adjacent its lower, or bristle-receiving, end and a series of angularly disposed passages communicating with one or more of the beads and permitting the free flow of the cementing material from the bead or beads into such passages.` l

An object of the invention has been to provid a brush, having the features and advantages stated, which is simple and economical to produce and at the same time presents a particularly attractive appearance.

Other objects, features and advantages of the invention will appear from a detailed description of an illustrative form of the same which will now be Vgiven in conjunction with the accompanying drawing, in which:

Fig. 1 is an elevational view of a brush embodying the invention.

Fig. 2 is an enlarged transverse section through the brush along the broken line 2-2 of Fig. 1.

Fig; 3 is an enlarged longitudinal section along the line 3-3 of Fig. 1.

Fig. 4 is an elevational View of a modified form of ferrule, and

Fig. 5 is an elevational view of a further modiiied form of ferrule which may be employed in connection with the invention.

j Referring now to Figs. 1 to 3 of the drawing,-

the brush may comprise a conventional handle I formed of wood or other appropriate material and ofv a shape and size enabling it to be readily grasped. At the lower end of the handle there is provided a ferrule II, formed preferably of sheet metal, and extending from the lower end of this is abrushing body I2 of any appropriate form, preferably consisting of a group or body of bristles. Adjacent the upper end of the ferrule there is formed a bead I3 extending around the ferrule, this serving the purpose of strengthening the ferrule and also the purpose of ornamentation. Any suitable means, such as nails I4, may be employed` for securing the handle in place in the upper end of the ferrule.

LAdjacent its lower end the ferrule is preferably provided with a pair of transversely extending beads I and IB appropriately spaced. These beads are connected by a series'of diagonally disposed ribs I1 which may yeither be parallel, as shown, or may be disposed in any other appropriate relation. They may be either'closely or widely spaced, as desired, so long as a sufficient number of the ribs is provided around the ferrule to place the beads I5 and I6 in appropriate communication, or to provide,'in themselves, adequate reinforcement of the ferrule and adequate interlocking of the ferrule with the cementing agent, as will be explained. Itwll be understood that at the inner surface of the ferrule, depressions or channels will be provided at the points forming the beads and ribs. The small parallelogram-like surfaces shown in Figure 1 between adjacent ribs are ush with the main portion of the ferrule on both the inner and outer surfaces of the latter. As` indicatedby the dotted-line showing of the ribs on the opposite side of the brush, in Figure 1, these are inclined in the opposite direction from those shown in full lines,

.thu-s serving to better lock the bristle knot against displacement in the ferrule.

The upper end I8 of the bristle body I2 may bel of any appropriate form. It may either be square-cut across the top, as indicated at I9, or it may beprovided with an appropriate concavity which is complemental to the form of thel brushing end of the bristles. The upper end of the bristle body is preferably impregnated with a suitable adhesive or cementing substance, such as rubber cement, which is applied to the bristle butt in any convenient way, as by dipping the bristle' butt into a bath of the cement after partially' inserting it in the ferrule or by pouring the cementr into' the ferrule after the knot has been vfully inserted." If the dipping method is followed, the thoroughly impregnated bristle butt, upon being iinally positioned in the ferrule, may have an excess of the cement squeezed from the knot, if the cement has not yet been fully dried, and this excess may then be permitted to ow into the channels -formed by the beads I and I6 and the ribs |1. However, if the knot is finally positioned after the cement has been fully dried, the extra pouring of cement, to be presently mentioned, will be depended upon to flow around the end of the knot and into the channels formed by the beads and ribs. So also, if the cement is applied only after the bristle knot is inserted in the ierrule, it will seep into the spaces between the bristles as Well as around the bristles and into the channels mentioned. Preferably the bristle butt will be inserted in the ferrule to a plane adjacent that of the center of the bead I5, as indicated in Fig. 3, although it may be inserted to a plane either somewhat above or below the bead I5, as desired. After the rst layer of cement, applied by dipping or pouring as explained, has dried to a desirable extent, a second layer 20 of the cement, or similar adhesive material, may be poured over the top of the bristle butt. It will be understood that this is accomplished before the handle I0 is inserted in the upper end of the ferrule.

As indicated, the cement or bonding material, of either the first or the second pouring, or both, is allowed to seep or flow about the butt ends of the bristles for a desired distance, and also into the adjacent beads and ribs. At the same time the cement is suitably subjected to drying or evaporation to a desired degree. Then after the layer 2E) has dried suitably, the assembled butt and ferrule, as a whole, is treated to a solidifying or hardening process, such as vulcanizing if a rubber compound is used, thus firmly bonding the bristle ends, one to the other, and the mass to the ferrule.

It will be seen that in the construction described, a very rm bond will be provided between the bristle knot and ferrule and these will become a substantially unitary structure. elements will be interlocked by virtue of the projecting portions of the cement inter-engaging with the recesses formed by the inner surfaces of the beads and ribs. The interlocking projections and recesses are such that the bristle body is not only held against longitudinal movement but also against transverse twisting movement within the ferrule. The bond or anchorage between the bristle body and ferrule may be sufficiently sturdy to avoid the necessity of the usual nails which are passed through the lower end of a conventional brush, particularly in brushes of the larger sizes. Should it be desired to supplement the interlocking action of the ribs and beading, nails may, if desired, be employed, these being passed through some, or all, of the spaces formed between the ribs I1.

It will be understood that even if a material is used for the ferrule to which the cementitious material will not bond or adhere, the key-like formations in the headings and ribs will securely hold the bristle butt in and to the ferrule, resulting in a rigidly united, fixed structure, similar to that previously described.

in Figure 4 there is illustrated a modied form of ferrule, which may be employed in accordance with the present invention. The ferrule may, as before, have a bead I3 extending around the same adjacent its top. Adjacent its lower end the ferrule may be provided with a pair of beads These 2| and 22 extending around the same. These may be spaced substantially the same as the beads I5 and I6 of the first embodiment or slightly more, if desired, However, in lieu of providing a single set of ribs extending from one bead to the other, there may be provided a series of downwardly extending ribs 23 disposed diagonally from the bead 2| toward the bead 22 but terminating some distance from bead 22. Similarly, a series of ribs 24 may extend upwardly in a diagonal direction from the lower bead 22 toward the bead 2| but may terminate some distance from the bead 2|. The series of ribs 24 may, as shown, be interspersed between the ribs 23, but, if desired, either the ribs 23 or the ribs 24 may be omitted and the series of ribs retained may, in that case, be spaced somewhat closer together. It will be apparent that in the use of this ferrule in the same manner as explained in connection with the ferrule of the first embodiment, a firm interlocking action will be produced between the bristle knot and ferrule which will form a rigid, substantially unitary structure.

Referring now to Fig. 5, there is shown a further modied arrangement of ribbing at the lower end of the ferrule. As in the other forms, a pair of transversely extending beads 25 and 25 may be provided around the ferrule. These beads may be connected by a series of diagonally disposed ribs 21 inclined in one direction and a se-ries of diagonally disposed ribs 28 inclined in the opposite direction. The arrangement may be such that a series of triangular spaces is provided between the diagonal sets of ribs 21 and 28 vand the beads 25 and 26, or if the spacing of the ribs is greater, the intervening spaces may be of trapezoidal form. .As a further variation, the ribs 21 might extend downwardly from bead 25 and terminate a slight distance from bead 25 while ribs 28 may extend upwardly from bead 26 and terminate slightly short of bead 25. It will be seen that the ribs and beads of the ferrule of Figure 5 will function in substantially the same way as the ribs and beads of the iirst-described form and will provide an eiective bond and interlock between the bristle knot and ferrule.

A Variety of other arangements of beads and diagonally disposed connecting ribs, capable of forming a number of different, attractive designs, will suggest themselves in the light of the foregoing. The ribs may, if desired, be curved from one bead to the other in lieu of being straight, as indicated in Figs. 1, 4 and 5. One or both of the beads might be omitted, if desired, and the ribs alone depended upon to impart the desired `stiifening effect and to provide the interlocking action.

While certain illustrative forms of the invention have been disclosed in detail, and certain modiiications have been suggested, it will be understood that numerous other changes may be made in the construction and arrangement of the ferrule and bristle knot without departing from the general principles and scope of the invention. The terms and expressions employed herein have been used as terms of description and not of limitation.

What I claim is:

l. A paint brush which comprises a bristle body, a ferrule for retaining said bristle body, said errule having a plurality of circumferentially extending beads, and a plurality of ribs inter-connecting said beads. said ribs being disvof said beads and ribs.

posed diagonally between said beads at a substantial acute angle to the length of the bristles in said bristle body, said beads and ribs presenting recesses on their inner sides, and cementing means binding the end of said bristle body and interlocking with the recesses on the inner sides 2. A paint brush which comprises a bristle body, a ferrule surrounding one end of said bristle body and retaining the same, said ferrule having a plurality of circumferentially extending beads in the region of the retained end of said bristle body and having also a plurality of ribs extending in different directions serving to inter-connect said beads, the longitudinal center line of each of said ribs extending across a plurality of bristles in said bristle body, said beads and ribs presenting recesses on'their inner sidesy and cementing means binding the ends of the bristles of said bristle body and interlocking with the recesses on the inner sides of said beads and ribs.

3. A paint brush which comprises a bristle body, a ferrul-e surrounding one end of said bristle body and retaining the same, said ferrule having a plurality of ribs extending diagonally at a substantial acute angle with respect to the length of the ferrule and disposed adjacent the bristle body retaining end thereof, said ribs pre- -senting recesses of substantial width on their inner sides extending at said acute angle to the length of the bristles in said b-ristle body, and cementing means binding the end o-f the bristles of said bristle body and interlocking with the recesses on the inner sides of said ribs.

4. A paint brush which comprises a bristle fbody, a ferrule surrounding one end of said bris.- tle body and retaining the same, said ferrule having a plurality of circumferentially extending beads in the region of the retained end of said bristle body and having also a plurality of ribs extending diagonally at a substantial acute angle with respect to the length o-f the bristles in said bristle body from one of said beads toward the other but terminating a slight distance from said other bead, said beads and ribs presenting recesses on their inner sides and cementing means binding the ends of the bristles of said bristle body and interlocking with the recesses )on the inner sides of said beads and ribs.

5. A paint brush Which comprises a bristle body, a ferrule surrounding one end of said bristle body and retaining the same, said ferrule having a plurality of circumferentially extending beads in the region of the retained end of said bristle body and having also a plurality of ribs extending diagonally from one of said beads toward the other but terminating a slight distance from said other bead, and having another series of ribs extending diagonally from said other bead toward said one bead but terminating a slight distance therefrom, the ribs of both of said series crossing the lbristles of said bristle body at a substantial acute angle, said beads and ribs presenting recesses on their inner sides and cementing means binding the ends of the bristles of said bristle body and interlocking with the recesses on the inner sides of said beads and ribs.

AUGUSTE L. SALTZMAN.

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