BAIRD &TATLOCK. (LONDON) LTD. 



905 



(Keg. No. 601,879.) 



The " Westminster" Vaccine Shaker, a New Pattern Shaking Machine, for vaccines, as 

 devised by Mr. F. R. Chopping, Westminster Hospital. 



A new Shaker expressly designed for quiet and smooth working. It is practically noiseless and has been 

 proved to be highly efficient. The apparatus consists of a carrier or tube holder, with a rigid arm connected 

 at its other end to a large phosphor-bronze ring mounted on an eccentric, fixed to a small countershaft. The 

 carrier is supported on a rocker with bearings top and bottom, and the countershaft is driven by a small electric 

 motor controlled by a regulator switch. All bearing parts are adjustable, although actually very little wear 

 takes place. 



The whole apparatus is mounted on a polished board and is very compact. 



905 r Complete on stand with starter resistance motor, and shaker, arranged for continuous currents 

 906 T Vaccine Shaker, as figured below, without motor and starter, mounted on board each 



Please state voltage when ordering. 



6 

 3 



906 907 



907 T Shaking Machine, as No. 906, without motor, but fitted in small incubator, specially made 

 with two tubulures for connecting to motor outside. Incubator similar in all respects to 

 No. 294, and fitted with capsule to regulate at 37 C. Inside size of Incubator 14 in. by 

 12 in. by 12 in. ... .. .. each 1210 



CPJOSS STREET HATTOTST GARDEN, E- C 



