GB190410931A - Improvements in, and Attachments relating to, Fountain, Stylographic or other Reservoir Pens. - Google Patents

Abstract

10,931. Cole, A. F. May 12. Pens, reservoir; writers' cramp, preventing. - Relates to a device for readily unscrewing the nib-holding portion of a reservoir pen from the main portion. The collar A, shown in Fig. 2, has one or more internal facets a' which engage with similar facets on the pen, thus enabling the nib portion to be unscrewed. The exterior edge of the collar is roughened, and, in order to more easily locate the facets a', similar facets are provided at a<2> disposed in the same radial direction. Modifications are described, in one of which the collar has an oval aperture for use with pens of an oval-shaped section, and in another the collar is adapted to a pen provided with a series of shallow flutings, which also enable the pen to be gripped more easily in writing. The collar may also have a quick-threaded screw formed on its internal edge so as to engage with a similar left-handed screw on the pen. Fig. 10 shows a form of collar adapted to be closed to embrace a pen of any section. The Provisional Specification states that the collar may be closed also by a camarrangement, a taper screw arrangement, and after the manner of a closing chuck or closing pencil protector. It also states that the pen and collar may be constructed in a " ratchet fashion, so as to permit unscrewing only by the collar.