Patent GB-1024154-A (GB)
Title: Writing instrument
Inventor: WITTNEBERT FREDERICK RUSSEL
IPC: B43K5/18
Filed: 1963-01-28
Abstract: 1,024,154. Fountain pens. PARKER PEN CO. Jan. 28, 1963, No. 3445/63. Heading B6P. A fountain pen comprises an ink reservoir unit 12, a barrel having a hollow bottom end 6 which has a portion of non-circular crosssection to be gripped by the fingers when in use, and a hollow top end 16 enclosing the reservoir unit, an ink feed unit 1 connected to the reservoir unit and mounted in the bottom end 6, a writing nib 10 supported by the feed unit 1, the ink feed unit, the writing nib and the ink reservoir being rotatable together in order to change their orientation relative to the bottom end of the barrel. Reservoir, Fig. 5. The reservoir unit 12 may be a refillable capillary type, a factory filled disposable cartridge, or a collapsible sac type, which may be disconnected from the ink feed unit 1. In the construction shown, a collapsible sac 124 is contained within a rigid casing 125a, having a transverse aperture through which a pressure bar 125 is depressed. A breather tube 126, open at both ends, is mounted within the sac 124 and extends to a point adjacent the opening of a snout 121. The snout has a round bore 127 leading into a rectangular bore 128, and a slot 129 extends into the walls surrounding both bores. Splines 122 co-operate with splines and grooves 72, Fig. 6 (not shown), in the ink feed unit I. The reservoir is filled by dipping the snout 121 into a supply of ink and depressing the bar 125 one or more times. Nib section,-Figs. 1 and 3. The ink feed unit 1 comprises a feed bar 11 and an excess or overflow ink collector 63 having a receiver 71 for the reservoir unit 12 cemented thereto. A nib 10 has inturned wings 18 which cooperate with grooves 93 at either side of the feed bar, Fig. 3. A pierce hole 19 co-operates with an air groove 87 in the feed bar which leads to an annular space 100 surrounding the shank 82 of the feed bar 11. Air proceeds from the annular space 100 through a bore 78 into an air channel 66 in the ink collector 63, Fig. 6 (not shown), and then through a bore 79 into an annular space 101 around the rear end rod 84 of the feed-bar 11. From the annular space 101, air either bubbles up the inside of the breather tube 126, or up four capillary spaces formed between the tube 126 and the rectangular bore 128, via the slat 129. Ink from the reservoir moves down the four capillary spaces into the slot 129 and then on to the nib by either of two paths: (1) from the slot 129 around the rod 84 and into the feed channels 88 in the feed bar 11, Fig. 4 (not shown); and/or (2) from the slot 129 into a feed channel 67 in the ink collector 63, around the shank 82 and into the feed channels 88 leading to the nib. A nipple 74 screw-threaded into the bottom end 6 has external threads 60 for receiving the top end 16 of the barrel. The tapered portion receives the tapered portion 123 of the reservoir unit 12 and an 0-ring seals the ink feed unit 1 against leakage. The orientation of the writing nib, feed unit and reservoir unit is varied by gripping the lower portions of the reservoir casing 125a and twisting it relative to the bottom end 6 of the barrel. Means may be provided on the bottom end 6 for indicating the various positions of the nib.