(under subclass 11) Devices for holding brush-backs or blocks while being subjected to drilling, tuft-setting, filling, or other brush-making operations, except those for automatically positioning the back or block to bring to the working point successive areas corresponding to the desired positions of the tufts in the completed brush, for which see this class, ....
SEE OR SEARCH CLASS
269, Work Holders, appropriate subclasses. Class 269 is the residual locus for patents to a device for clamping, supporting and/or holding an article (or articles) in position to be operated on or treated. See notes thereunder for other related loci.