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Quest'opera è nel pubblico dominio anche in tutti i Paesi e nelle aree in cui la durata del copyright è la vita dell'autore più 70 anni o meno.
Devi inserire anche un tag per il pubblico dominio relativo agli Stati Uniti per indicare perché quest'opera è nel pubblico dominio negli Stati Uniti. Nota che in alcuni Paesi i termini del copyright durano più di 70 anni: in Messico 100, in Giamaica 95, in Colombia 80, in Guatemala e Samoa 75 anni. Questa immagine potrebbe non essere nel pubblico dominio in questi Paesi, che inoltre non applicano la regola della durata più breve. L'Honduras ha un termine generale di 75 anni, ma questo paese applica la regola della durata più breve.
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Text of patent:
TO ALL WHOM IT MAY CONCERN:
Be it known that we, M.Klein and Henry W. Wynne, both of Keokuk, in the State of Iowa, have invented a new and useful Improvement in Fountain-Pens; and we do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accomanying drawings, and to the letters of reference marked theron, in which—
Figure 1 is a longituninal sectional view of a fountain-pen, with our improvement.
This invention consists of forming an ink-chamber A in the handle or holder, together with an arrangement of parts to supply the ink to the pen-point K, for use as wanted.
The whole is made as shoen in the drawings. At the top of the ink-chamber A is made a small entrance, C, for the air. There is a valve, B, held by a spring, D, to close this entrance C. On the lower part of the holder is a projecting part, F. This part F is the bent end of a rod, E, which passes along through a small tube, G, enclosed in the body of the holder, and connects with the spring D, so that, by pushing the part F up with the finger, the spring D and valve B will be raise, and allow the air to enter the ink-chamber A by the hole C, which will permit the ink to flow through a very small hole or tube, I, on to the pen-point K for use, when, by releasing the part F, the spring D will force the valve B on to the opening C, so asto close it, which will cause the pressure of the atmosphere to restrain the ink from flowing through the hole or tube I. The shield part L assists to hold a supply of ink under the pen-point K. The cap M covers and protects the valve B and accompanying parts. The part H, forming the lower part of the ink-chamber A, can be taken off, when the ink can be poured into the chamber A by inverting it.
This arrangement can be used to supply ink to drawing-pens, by substituting them for the pen-point K and sheild L.
What we claim is—
- The air-opening C, which the spring-valve B D at the top of the ink-chamber A, as and for the purpose specified.
- The rod F E, to raise the air-valve B, with its enclosed passage-way G, substantially as specified.
M. KLEIN
MENTY W. WYNNE
Witnesses:
Charles Buren,
Jacob Spraker