Patent GB-1101635-A (GB)
Title: Improvements in and relating to funnel type pens for stencil writing
Inventor: KOELICHEN HARALD
IPC: B43K8/18
Filed: 1965-12-15
Abstract: 1,101,635. Stencilling pens. FILLER & FIEBIG G.m.b.H. 15 Dec., 1965, No. 53150/65. Heading B6P. In a stencilling pen comprising an ink reservoir 1 with a tubular writing tip 3, Fig. 2, through which a cleaning wire attached to a pin 4 can be moved, the member operating the pen, e.g. the cap 2, which has a filling orifice 5 in its end or side, can be moved to a position wherein it closes the reservoir in a substantially air-tight manner so as to prevent ink leakage or deterioration when the pen is not in use. In Fig. 2, the pin 4 is urged rearwardly by a spring 11 and is connected with the cap 2 by a rubber disc apertured to allow ink to pass through it to the reservoir. The cap 2 is connected to the reservoir 1 by a bayonet joint arrangement 8, 9, which permits either the removal of the cap, or up-and-down movement of the cap to operate the pin, or downward movement of the cap to a position where the upper rim of the reservoir 1 engages the rubber disc to form a seal. In this latter position, the pin 4 by its ends closes the orifice 5 and the lower outlet of the reservoir. In another construction (Figs. 1, 1a), the cap 2 has a lateral filling aperture only, is screwed on to the reservoir 1, and is fixed to the pin 4. The upper rim of the reservoir engages a washer (6) on the cap 2 to seal the reservoir in the closed position. As shown in Fig. 3, the reservoir 1 has two short annular screwed parts 1a, 1b, and the cap 2, with a lateral opening 5, has a short annular screwed part 2a. After the part 2a has been screwed over the part 1a the cap 2 can be moved freely downwards and upwards to move the wirecarrying pin 4, and then, after the pen has been used, the part 2a can be screwed on to the part 1b to seal the reservoir. The pin 4 is slidable in a member 4a against the action of a spring 12, and the member 4a isattached to an apertured rubber retracting-sleeve 13 secured to the upper rim of the reservoir 1. The periphery of the sleeve forms a seal between the cap and reservoir in the closed position. Other arrangements. in which the reservoir and cap are connected by threaded parts 1a, 1b, 2a as shown in Fig. 3, are described (Figs. 4, 6, 7). In one of these (Fig. 6), the filling aperture 5 is in the end of the cap 2 and is closed by a spring-pressed ball (16) mounted in a tube (4b) fixed to the cap and having lateral openings (15) for the passage of ink to the reservoir. In another construction, Fig. 8, a plunger 4d has a short screwed annulus, and the reservoir 1 has a plug it with two short threaded annular parts 1d, 1e. After ink has been supplied to the reservoir 1 through the passage at the top of the plug 1c, the plunger 4d is inserted by screwing the threaded annulus through the part 1d whereupon the plunger can be moved freely to operate the wire-carrying pin- 4. To seal the reservoir, the threaded annulus is screwed into the part 1e whereupon conical sealing faces F on the plunger and the plug come into engagement. A spring 13a tends to move the plunger 4d upwardly and a spring 12a tends to move the pin 4 downwardly. Where the cap has aside opening 5, as shown in Fig. 3, a circular spring strip (14, Fig. 5), seated in a recess in the cap may be provided to close the opening, the strip being forced away from the opening when the nozzle of a filling bottle is inserted.