Brush material and brushes utilizing the same, particularly power driven rotary brushes, in which the brush bristles have a central core and a thin outer plastic coating, with granular abrasive preferably secured to such core beneath such coating.

A synthetic fiber end tapering method is provided which comprises the steps of binding the synthetic fiber filaments into a bundle; immersing the end portion of said bundle in a first liquid having ability to dissolve said synthetic fibers, so as to dissolve the surfaces of the filaments in said bundle in such a way that the degree of dissolving will be greater at the tip part of said end portion of the fiber bundle than at the upper part thereof; and then immersing the thus treated end portion ...

A rotary brush construction comprised of an elongated, channel-shaped member wrapped around a cylindrical core and rigidly secured thereto to form a plurality of closely spaced, spiral flights by which the brush elements are firmly secured to the core. The method is carried out by cutting the core substantially lengthwise thereof into two or more segments, either before or after the flights of the channel-shaped member are secured thereto, and mounting the channel-shaped member upon the core wit...

A wet mop head construction and a method of making such construction comprising a pile fabric having an improved headband for attachment to the gripping elements of a wet mop tool and wherein the headband is comprised of a fabric material sewn about an end of the main body pile fabric portion with end portions of the headband extending from the pile fabric to partially cover and prevent the gripping elements of a mop tool from contacting a surface being treated by the mop head.

This disclosure depicts assembling apparatus and methods which are especially useful in joining a handle with a brush head or the like having an open-ended ferrule into which an end of the handle is inserted. In order to facilitate insertion of the handle into the ferrule, the ferrule is first compressed to distort its cross-sectional configuration such that it mates more closely with the cross-sectional configuration of the handle end. Other novel features and method steps are disclosed.

The invention relates to a method of and apparatus of producing tufts of hairs or bristles using a perforated plate and apparatus for use in such a method. The hairs or bristles are introduced from a bundle into holes in the perforated plate using ultrasonic vibrations to facilitate the insertion. Ultrasonic vibrations can also be used to shape the tufts to a desired profile prior to setting the hairs or bristles with a binder. The method and apparatus for use therewith have been found of partic...

The outlet of a magazine for a supply of parallel bristles in a bursh making machine is adjacent to an oscillatable element which transfers compacted tufts of bristles to an inserting tool. The supply of bristles in the magazine is compacted by one or more reciprocable tamping members which compact the bristles during movement toward the outlet. Fresh bristles can be admitted in unconfined condition or in the form of bundles containing batches of parallel bristles confined in tubular envelopes. ...

Method and apparatus for making a wound rope or cord bound brush. The method and apparatus of the invention makes it possible to vary the angle at which the brush bristles project from the surface of the brush core (a) in either direction tangentially of the brush core with respect to a longitudinal axial plane thereof, and/or (b) the angle of the bristles longitudinally of the brush with respect to transverse planes through the axis of the brush.

A method and an apparatus for joining plastic brush bristles with plastic brush backs provides for heating the tips of brush bristle strands until they are soft and heating zones of the plastic brush backs to which the bristles will be mounted until they are soft. Thereafter, the soft tips of the bristles are brought into contact with the soft zones of the brush backs to fuse the bristles to the brush backs. In the particular structure and method of the machine of this invention, two relatively ...

There is disclosed an apparatus for and a method of making a brush wherein bristle tufts are bound to a brush core by a helically wound notched strip of a suitable material such as metal spaced radially of the core, the roots of the bristle tufts passing through the notches in the strip. The strip has longitudinally spaced formations integral therewith for spacing the strip radially of the brush core, thereby avoiding the use of a further, separate strip for that purpose. The bristle binding str...