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Improvements in the combined deposit command mechanisms in two-color ball writing instruments (Machine-translation by Google Translate, not legally binding)
Improvements in the combined deposit command mechanisms in two-color ball writing instruments (Machine-translation by Google Translate, not legally binding)
Improvements in the mechanisms of combined control of deposits in two-color ball-type writers, of the type comprising ink-bearing tubes requested by respective retractable action springs, characterized essentially by the fact of understanding in combination and as essential elements, on the one hand there are two pulsating operating heads, one for each ink tube, one axial housing of these heads in the handle of the instrument, this housing having a partition separator and guide thereof, a bridge piece located inside the housing, integrated by a lower disc with passages for the aforesaid ink-bearing tubes, and whose upper crosspiece rests against the edge of the separating partition, the lower discoidal base and the said crosspiece being joined by flexible arms provided with bevelled teeth on their inner edge, which constitute a narrow passage expandable by the action of a wedge relief provided on the opposite sides These are fitted with the pulsating heads, whose teeth are the means for retaining the heads in their inoperative elevated positions, and in the lowered positions of work. (Machine-translation by Google Translate, not legally binding)
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