Abrasive Brush Having Bristles with fused Abrasive Globules

Author:  Steve A. Rands
Source:  US Patent 3,696,563
Doc ID:  1969048
Year of Publication:  1969
Abstract:  
The specification discloses an article of manufacture comprising an abrasive brush and the abrasive bristles comprising same, and a method for producing or manufacturing same.Each abrasive bristle is of a resilient type and has a free outer bristle end carrying an enlarged abrasive globule of relatively fused bonding material and particulated abrasive material which may be mounted on a bristle end directly by a fused-in-place junction between the bristle end and the globule or by auxililiary bristle end member having said bonding material and particulate material fused thereto and with said auxiliaray bristle end member being further provided with attachment means for attaching same to a corresponding free outer bristle member end. Said attachments mean may comprise brazed junction means, mechanical engagement means, or any other suitable attachment means. The specification discloses several methods of manufacturing the abrasive bristles, and basically said method comprises applying to the end of aheat-resistant bristle member a particualte abrasive material and a fusible type of bonding material (which is either liquefied before such application, during such application, or subsequent to such application) in one or more applicatory and subsequent hardening steps until a substantial deposit of same has been applied to and condensed upon each free outer bristle member end so treated, to an extent such as to comprise and define one or more corresponding fused-in-place, enlarged abrasive globules.