Accuratus : centrifugal analysis / Bausch & Lomb Optical Co.

  • Bausch & Lomb
Date:
[1897?]
Catalogue details

Licence: Public Domain Mark

Credit: Accuratus : centrifugal analysis / Bausch & Lomb Optical Co. Source: Wellcome Collection.

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    nent position, or by screw clamp if it is intended to carry the instrument about. It is the smallest Centrifuge made, yet it is amply strong and a speed of 3,000 revolutions per minute is easily maintained. The gears are of extra hardened bronze and the TEETH ARE SPIRALLY cuT. This is the only Centrifuge made having spiral toothed gears. This form of gearing rums much easter and lasts longer than any straight cut gearing as it prevents back- lash or lost motion and three teeth engage at all times with a shearing contact in- stead of in the jarring fashion of the straight tooth gear. It is practically noise- less at the highest speeds. The tubes for containing the urine are carried in aluminum shields to prevent breakage, and each tube has a capacity of 15 c.c. of fluid. ‘The first 10 ¢. Cam one tube are graduated into 100 parts, permitting direct percentage readings of the precipitates, and there is a mark at the 15 c.c. point to facilitate the addition of reagents to cause precipitation. (See Purdy, et al, Urinary Analysis and Diag- nosis.) The other tube is not graduated, the precipitates being intended for micro- scopic examination. An elastic cushion prevents breakage during rotation,
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