G - Physics – 01 – N
Patent
G - Physics
01
N
73/103
G01N 1/14 (2006.01) G01N 35/10 (2006.01)
Patent
CA 1107985
TIP WIPER APPARATUS ABSTRACT OF THE DISCLOSURE An apparatus for wiping the tip of a sample dispensing tube. The apparatus includes means such as a pair of arms for locating the tip portion of a dip tube and for guiding the tube for movement between a first operative position in which the tube aspirates a charge of liquid from a sample container and a second position in which said tube will discharge said liquid into a reaction vessel such as a transfer disc. The wiper includes means for receiving a supply of absorbent wiping material in ribbon form, and a spool for taking up the ribbon, as well as means defining a path along which said ribbon will move between the supply means and the takeup spool. A pair of pins or the like are spaced closely apart from said tip and adapted to urge said ribbon into wiping contact with said tip. The takeup spool is driven in response to movement of the locating and guiding arms. Clutches or the like are provided for maintaining said ribbon under tension while the ribbon moves along its path, and in use, the ribbon is advanced from the supply means and wound upon the takeup spool, while being wiped along the tip of the tube during movement of the arm between its first and second positions.
309869
Baxter Travenol Laboratories Inc.
Macrae & Co.
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