Recovery of hypophyses from animals

Abstract

Abstract 699,694. Drills. VERMEHREN, C. E. Nov. 13, 1950 [Dec. 23, 1949], No. 27726/50. Class 83 (iii). [Also in Group VI] An annular drill comprises a tubular cutting member 8, having teeth 15, and an ejector 11. The ejector has diametrically-placed pins 12 extending freely through longitudinal slots in the drill 8 into a ring 13 which is axially held in a recess 14 formed between the halves 5, 6 of a sleeve. A handle 7 is attached to this sleeve and a spigot 10 is mounted on the rear end of the member 8 for attachment to a driving- machine. The handle 7 is held towards the rear of the device during use and, as cutting proceeds, a section of the substance cut passes into the space 16. Subsequently, the handle 7, and sleeve 5, 6 are moved forward to eject it.

Inventors

No inventors recorded.

Bibliographic Details