ES280074A1 - An apparatus for pointing or narrowing of the core of spiral bits (Machine-translation by Google Translate, not legally binding)
- Google Patents
An apparatus for pointing or narrowing of the core of spiral bits (Machine-translation by Google Translate, not legally binding)
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BILBAO ABARCA EUSTAQUIO
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BILBAO ABARCA EUSTAQUIO
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Application filed by BILBAO ABARCA EUSTAQUIOfiledCriticalBILBAO ABARCA EUSTAQUIO
Priority to ES0280074ApriorityCriticalpatent/ES280074A1/en
Publication of ES280074A1publicationCriticalpatent/ES280074A1/en
An apparatus for the stippling or narrowing of the core of the tip of the spiral drills, characterized by a straight channel in section of "V" of 90º in whose bottom the drill bits of any diameter are placed with their tip coinciding exactly with the pointed end 90º, seen in plan, of said channel and means to limit the opposite end of the drill bit, means for holding the drill in the bottom of the channel, means to advance or retract the channel with the drill held in relation to the emery wheel, and means to change the angle of said channel with its bit in relation to the horizontal. (Machine-translation by Google Translate, not legally binding)
ES0280074A1962-08-161962-08-16An apparatus for pointing or narrowing of the core of spiral bits (Machine-translation by Google Translate, not legally binding)
ExpiredES280074A1
(en)
Conicity checking instrument particularly for cones of drill bits, bits and similar tools (Machine-translation by Google Translate, not legally binding)