Crescent filler

The first truly efficient and functional automatic filling system based on the compression of a rubber tank was the famous crescent filler, designed by Roy Conklin' who patented it in 1901 (nº US-685258), which was introduced to the market by the company of the same name founded by him, the first example of the success of a brand due to the invention of an innovative filling mechanism.

The crescent filler is based on the realization of a particular pressure bar on which a metal crescent shaped bow is welded (from which derives the name given to the system by its inventor). The bow comes out of the body of the pen through a side slit made on the shaft of the same. By pressing on the headband you can directly compress the sac and thus quickly and easily fill the pen.

To avoid accidentally pressing the crescent filler the pens were also equipped with a ring retainer that went to fit into the slot under the bow, so that it was locked in an open position outside the pen. When it was necessary to load the pen it was enough to rotate the ring, cut on one side, to bring the position of the cut in correspondence of the slit, so that the bow could go down.

Il sistema era semplice ed efficace, e consentiva anche un caricamento migliore rispetto al successivo riempimento a levetta, in quanto si poteva comprimere completamente il serbatoio di gomma. Nonostante la sua superiorità tecnica però, la sporgenza dell'archetto dal corpo della penna risultava parecchio sgradevole dal punto di vista estetico, e questo ne decretò l'inesorabile declino.

Brevetti correlati

• Brevetto n° US-685258, del 1901-10-29, richiesto il 1901-07-12, di Roy Conklin, Conklin Pen Manufacturing Co.. Crescent filler.

• Brevetto n° US-745481, del 1903-12-01, richiesto il 1902-07-21, di Roy Conklin, Conklin Pen Manufacturing Co.. Crescent filler.

• Brevetto n° US-756778, del 1904-04-05, richiesto il 1904-03-04, di Roy Conklin, Conklin Pen Manufacturing Co.. Sistema di caricamento.

• Brevetto n° US-758930, del 1904-05-03, richiesto il 1903-11-30, di George S. Parker, The Parker Pen Company. Sistema di caricamento.

• Brevetto n° US-772467, del 1904-10-18, richiesto il 1903-11-16, di Rhodes G. Lockwood, Sterling Fountain Pen. Sistema di caricamento.

• Brevetto n° US-799777, del 1905-09-19, richiesto il 1905-04-05, di Roy Conklin, Conklin Pen Manufacturing Co.. Sistema di caricamento.

• Brevetto n° US-814520, del 1906-03-06, richiesto il 1905-09-11, di Roy Conklin, Conklin Pen Manufacturing Co.. Sistema di caricamento.

• Brevetto n° US-836180, del 1906-11-20, richiesto il 1906-02-23, di Roy Conklin, Conklin Pen Manufacturing Co.. Sistema di caricamento.