Abstract: A method of manufacturing a die for embossing a desired circuit pattern of a metal foil onto a substrate comprises steps of forming, on the work surface of die material, a first circuit-coating pattern corresponding to the contour of the desired circuit pattern and a second circuit-coating pattern large enough to cover the first circuit-coating pattern and larger than the desired circuit pattern. The die material surface uncovered by the second circuit-coating pattern is partly etched away to leave a grooving for receiving the embossed metal foil. Then, the second circuit-coating pattern is stripped away, and the uncovered metal portion surrounded by the first circuit-coating pattern is suitably removed, and finally the first coating pattern is stripped away.

Abstract: A device for printing in the Braille system. The device includes a magnetic core with an outer layer on the core provided with holes arranged in a pattern for composing a text to be printed. Pins of magnetizable material are adapted to be inserted in the holes. The pins are of a greater length than the thickness of the layer. They are adapted upon contact with the magnetizable core to be attracted thereto to be retained in the holes. The core forms a roller and includes two end portions between which is a depression. An electrical winding is provided in this depression to magnetize the core. The outer layer is of a non-magnetizable material. The core includes a layer of magnetizable material inside of the outer layer to cover the holes therein.

Abstract: A golf ball marker embodying type-pieces which are so shaped that the ball engaging portions of the printing characters to be impressed into the ball conform to the curvature of the outer surface of the portion of the ball to be marked, and wherein the force applied to the type-pieces, during a marking operation, are such that all portions of the printing characters are pressed into the ball in a direction substantially normal to the ball surfaces engaged by such portions.

Abstract: A resurfaceable rotary die counter is prepared by employing a cylindrical counter core having a central, circumferentially extending relieved area filled with readily replaceable synthetic resin material containing pre-tensioned, spirally wound glass fiber roving which renders the resin craze and crack resistance even under extended continuous use. Economical counter production is possible because of preparation of the counter on the press during makeready using the die as a counter forming element. The resin is run in against the die prior to hardening of the same to form a reverse design surface in the counter which exactly mates with the die surfaces. A viscous resin having a minimum viscosity of about 6000 cps. is employed which has the characteristics of remaining on the counter core without substantial flow until ultraviolet cure can be effected.