![]() To prevent water, drilling fluids, grit, etc., from gaining access to bearings 8 and III, the outer barrel head i is recessed to take four felt grease retainers 9 which fit around the upper end of the hollow spindle shaft i5, and is equipped with a packing box l4, containing packing l3, which is automatically compensated for wear by means of packing washer I2, upon which the coil spring exerts a continuous pressure. To permit the inner barrel l9 and the spindle shaft Hi to remain stationary while the outer barrel 20 is rotating, the spindle shaft is equipped with a ball thrust bearing 8 and a bronze ring bearing Ill. of the hollow spindle shaft I5 attached to the inner barrel head I6 and secured by lock nut I8. The downward thrust of the drill rod is transmitted through the outer barrel headto the inner barrel l9 and the sample cutting shoe 29 by means. E21B25/00- Apparatus for obtaining or removing undisturbed cores, e.g. ![]() DEEP DRILLING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS -1 silts Substances 0.000 description 2.229910052751 metal Inorganic materials 0.000 description 2.RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2.229910052802 copper Inorganic materials 0.000 description 2.229910000906 Bronze Inorganic materials 0.000 description 2.XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Henry L Johnson filed Critical Henry L Johnson Priority to US322545A priority Critical patent/US2403002A/en Application granted granted Critical Publication of US2403002A publication Critical patent/US2403002A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links ![]() Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US322545A Inventor Henry L Johnson Original Assignee Henry L Johnson Priority date (The priority date is an assumption and is not a legal conclusion. Google Patents Apparatus for undisturbed overburden samplingÄownload PDF Info Publication number US2403002A US2403002A US322545A US32254540A US2403002A US 2403002 A US2403002 A US 2403002A US 322545 A US322545 A US 322545A US 32254540 A US32254540 A US 32254540A US 2403002 A US2403002 A US 2403002A Authority US United States Prior art keywords drill barrel sampling sample overburden Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US2403002A - Apparatus for undisturbed overburden sampling US2403002A - Apparatus for undisturbed overburden sampling
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