US2654905A - Brush - Google Patents

Description

Oct. 13, 1953 G. K. DAVIS, JR

BRUSH Filed Sept. 10, 1947 zzvmvrox George K Davis Jr Attorney Patented Oct. 13, 1953 OFFICE BRUSH George K. Davis, J r., Long Beach, Calif. Application September 10, 1947, Serial No. 773,285 1 Claim. "(01. 15- 198) (Granted under Title 35, U. S. Code "msec. 266) This invention relates to brushes, and more particularly to that feature of brushes having to do with the securing in the brush body of the bristles of tufts of brush material.

It is an object of this invention to provide a brush in which the tufts of brush material may be quickly and easily replaced when they are worn.

It is another object of this invention to provide a brush which may utilize for its bristles short lengths of wire cable, thereby cheapening the manufacture of the brush.

In accordance with these and other objects which will become apparent in the following specification, the brush of the instant invention is constructed of a tubular body having a plurality of slots therein. Tufts of brush material are placed in the slots with the ends of the bristles extending outward of the body and the bights disposed within the body between the two adjacent slots through which the ends project. A ring or cap is secured over the edges of the slots to secure the brush tufts within the body.

Preferred embodiments of the invention will now be described in connection with the accompanying drawings, wherein:

Fig. 1 is an end view of a brush. 7

Fig. 2 is an exploded perspective view showing details of construction.

Fig. 3 is an end view of a modified form of brush constructed in accordance with this invention; and

Fig. 4 is a side view of the brush body of Fig. 3.

Referring to the drawing, ll designates a tubular body in the form of a right circular cylinder closed at one end by an end wall l2, preferably formed integral therewith. Projecting into the body i l and preferably formed integral with the end wall l2, is an axial boss I3, centrally bored at [4 to provide mounting means for a brush rotating shaft (not shown). From the edge I5 of the body II which is opposite to the end wall I2, extend a plurality of evenly distributed helical slots 2l-28. The width of the slots is sufficient to accommodate tufts of brush material, exemplified by the tuft 3|. The brush tuft 3| preferably consists of a short length of stranded resilient material such as wire cable.

The brush is assembled by placing tufts of brush material 3| in adjacent slots 21-28 with the ends 32 of the tuft extending outward of the brush and the bight 33 disposed within the body H between adjacent slots. The resiliency of the brush material keeps the bight 33 pressed against the periphery of the boss [3, thereby providing i r l 2 three securing points of the brush tuft. These points are: the adjacent slots through which the brush ends extend, and

the periphery of boss l3, against which the bight 33 presses.

It may be preferred to stagger the brush tufts 3| asthey are inserted into the slots i.- l28. In this event, the first tuft 3! is inserted into slots 2i and 22. The next tuft is inserted into slots 23 and 24. The next tuft is inserted into slots 25 and 26. The next tuft is inserted into slots 21 and 28, thereby completing the first layer of brush material. The next layer begins by inserting a tuft 3| into slots 22 and 23 and is completed by inserting the next three tufts into slots 24-25, 26-41, and 28-41, respectively. In this fashion the tuft layers are built up until they fill the entire length of the slots.

A cap 35, having an annular groove 36 on the inner face thereof, is then placed over the edge l5 of the body H, with the edge residing in the groove 33. The cap 35 is secured to the body H by means of screws 31 extending through holes 38 in the cap and into tapped holes 39 in the boss l3. The cap 35 is provided with a center hole 4| registering with the bore Hi to accommodate a rotatable brush mounting shaft.

The slots 2I--23 are made helical, to produce a more effective brushing action as the brush is rotated.

The modified form of brush illustrated in Figs. 3 and 4 has a cylindrical body 5i, which is not provided with an axial boss. The securing function of the boss l3 of Figs. 1 and 2 is fulfilled, in this modified form, by the bights 52 of the brush tufts 53. As seen in Pig. 3 the bights 52 of the brush tufts bear against each other in backto-back relation. An axial mounting bore 54 extends part way into the body 5|, stopping short of the slots 55, as seen in Fig. 4.

To retain the brush tufts 53 in position, and to strengthen the slotted wall of the cylinder 5|, a retaining ring 56 is slipped over the edge 51 of the body 5! from which the slots 55 extend. Ring 56 is held in place by means of an annular groove 58, formed in the body 5! adjacent the edge 51.

From the foregoing description, it will be seen that there has been described a manner of brush construction which produces, economically and quickly, an improved brush, the bristles of which may be readily replaced when worn.

It will be understood that this invention may be made and utilized in many suitable shapes and sizes, and that various modifications and changes may be made in this invention without departwhich determine the shape.

a plurality of mutually intersecting diametrical;

slots extending longitudinally inwardly from one end and through a substantial portion of the length thereof whereby said body portioncisi dievided into a plurality of elongated circular sectors each having a cross-sectional area which substantially less than the cross sectional .area;

of the body at the opposite end thereof, said body being formed of matei'ialllhas= spring, characaeristics when shaped in the form of saint elongated sectors, a plurality of tufts of resilient brush material woven, yieldably into .said; slots,

saidtufts having the ends thereofs-extendingasum stantially radially of the body'and' hayingthe-intermediate portions: thereof .bighted within adjacent slots, the bights of said brush tuits bear.- 25

ing against. each; otherxin. back-to-baek relation within. said: may, a pre-formed annular groove on the. exterior of said. bady'near said; firsta-men. tioned end thereof; andiinterrupted by saidislota.

said groove having a rectangular cross section, and a retaining snap ring releasably seated in said interrupted groove for holding said tufts in said slots, said ring having a rectangular cross section matching that of the groove for free seating of the ring therein, said ring being rigid and havingzan inner diameter-approximately equal to fillerdiameimt 0f the body." atrthe bottom. of said groove and less than the exterior diameter of the .hmiy between the groove and said end of the body adjacent thereto both before and after the ring is seated in the groove, said segments and tufts being yieldahly compressible to permit slipping of-th'e ring onto the exterior surface of the body followed-by snap action movement of the ring into. the gr ov GEORGE K. DAVIS, JR.

References Cited in the file of this patent UNITED STA'JZES PATENTS Number Name Date 282,782 Sahlstrom Aug.'7', 1- 883 3711975 Rhodes Oct. 25, I387 1,927,747 Justice Sept; 19 ,1933 2,084,360 Spruzaola- June22; 1937 2.1102378 Gerhard; Dec. 1-4, 1937 2115,0203 Kransfelder Apr; 26,1938

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