GB1004113A - Improvements in or relating to fountain pens - Google Patents

Abstract

1,004,113. Reservoir pens. G. A. RUBISSOW. March 6, 1962 [March 6, 1961; March 13, 1961], No. 8697/62. Heading B6P. The collapsible reservoir of a fountain pen, made of a material such as latex rubber, which is sufficiently thin to allow the reservoir to collapse when a quantity of ink is used, thereby obviating the necessity of allowing air to enter the reservoir, is provided with magnetically attractable means attached to or embedded in the material of the reservoir. The reservoir is in two parts or halves, the halves being formed by dividing the reservoir along a longitudinal plane of the pen. One half of the reservoir is attached to a reinforcing member to prevent that half collapsing. The reinforcing member may be a separate curved plate 45, Fig. 3, of thin unmagnetizable material attached to the inside surface of the barrel wall 20; or part of the barrel wall adjacent the reservoir. The angle α, subtended by the plate 45 is no greater than 180 degrees. As an alternative, part of the barrel wall 20 may form half the reservoir as shown in Fig. 9. The magnetically attractable means, 44 in Fig. 9, are attached to or embedded in the other half of the reservoir and are arranged in such a manner as not to interfere with the self-collapsing of the reservoir as the ink is used. The barrel of the pen is provided with air vents, such as 40 in Fig. 9, to compensate for change of volume of the reservoir within the barrel. When the ink has been used, the reservoir 27 is in a collapsed state, as shown in broken lines in Figs. 3 and 9. With the nib of the pen placed below the surface of the ink in a bottle, when a magnet 46 is moved adjacent the side of the barrel opposite the reinforcing means, from the writing point to the opposite end, the reservoir is attracted to its original inflated position, thereby filling the pen with ink. The magnetically attractable means may take the form of longitudinally extending strips 44 or wire attached to the outside or inside surface of the reservoir, or embedded in the walls thereof; small pieces scattered on the inside or outside surface; or magnetically attractable powdered material embedded in the walls of the reservoir.