Extractor for increment borer

Details Extractor for increment borer Extractor for increment borer

1983-02-23

1986-04-29

Watts, Douglas D.

Cutlery

Combined cutlery or combined with ancillary feature

With material-holder or disposal

7386444, 403370, 403371, G01N 104

Patent

active

045847690

ABSTRACT:
An extractor for an increment borer (1), which increment borer (1) consists of a tubular body having internally a cylindric portion, which transforms to a conic portion (6), and which on the outside is provided with bore threads (4). According to the invention, an end piece (10) is provided for being attached to and detached from the rearward end of the blade (9). The end piece comprises a sleeve (12) and a domed nut (14), each of which are provided with threads (13,15) arranged so, that the sleeve (12) and domed nut (14) are axially movable relative to another. The end piece (10) further comprises an oblong conic locking pin (16) intended to be inserted together with the rearward end of the blade (9) into an axial through hole in the sleeve (12). The domed nut (14) is intended at its threading on the sleeve (12) to axially move the locking pin (16), which thereby is pressed against the blade (9) located between the locking pin (16) and the wall of said hole of the sleeve (12).
The extractor comprises a known semitubular so-called blade (9).

REFERENCES:
patent: 961475 (1910-06-01), Bacon
patent: 1323619 (1919-12-01), Curtin
patent: 2737704 (1956-03-01), Cinocca
patent: 4329882 (1982-05-01), Kaup

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