Translations:Leverless filler/2/en

Compared to twist filler the substantial innovation introduced by Swan was to allow only a limited rotation of the bottom, marked with arrows, and avoids excessive stress applied to the rubber of the bag. The system however had a limited success and has been used only by this company, having in substance the same problems of fragility of its analogue and a rather reduced filling capacity.

Related Patents

• Patent n° US-785654, of 1905-03-21, requested on 1904-12-21, of Claes W. Boman, Eagle. Fountain-pen.

• Patent n° US-851081, of 1907-04-23, requested on 1905-08-03, of Charles A. Faber, Unbranded. Self-filling fountain-pen.

• Patent n° FR-377047, of 1907-08-27, requested on 1905-08-03, of Charles A. Faber, Unbranded. Porte-plumes-réservoir.

• Patent n° US-1180424, of 1916-04-25, requested on 1915-03-19, of Edward G. Peck, A. A. Waterman. Fountain-pen.

• Patent n° GB-390585, of 1933-04-13, requested on 1932-01-07, of Edward Stephen Sears, Swan. Improvements in, or relating to, Fountain Pens.

• Patent n° DE-588550, of 1933-11-28, requested on 1932-01-07, Swan. Fuellfederhalter.

• Patent n° US-1954952, of 1934-04-17, requested on 1932-01-07, of Edward Stephen Sears, Swan. Fountain pen.