A method of making a tip member for ball pens and ball pens including such tips

摘要

1,134,034. Ball-point pens. MITSU-BISHI PENCIL CO. Ltd. 17 June, 1966 [2 Oct., 1965], No. 27230/66. Heading B6P. [Also in Division B3] A ball-point pen tip made by forming an axial hole 2 in a bar 1 (see Division B3) has high wear resistance insert 4, e.g. nylon, injected into the hole 2 and provided with ink holes 8 and ball seat 7. The ball seat may be of greater diameter than the material 4, Fig. 1E, or of smaller diameter in which case the seat 7 is made entirely in the material 4, Fig. 2. The bar 1 is provided with a threaded portion so that the insert is securely held in the bar.