88 



Wainscotting for Lecture Rooms, with Blackboard Stands. 



No. .'.0121 







50 424. 1 : 50. 



50,424. Large 'Wainscot (F i g u r e), as constructed for the Ecole des Mines dulHainaut, Pri( ... on 

 Mons (Belgium) app ii- 



This is 8.50 m long and 5.40 m high. In the centre are two large blackboards 2.10 m long and 

 1,10 m high. In the body are 3 drawers and 2 double-door and 1 single-door cupboard. To the right 

 a Cupboard for Chemicals abuts on the blackboard frame, and alongside this cupboard a door leading 

 to the preparation room. 



To the left of the blackboards there is an aspirator with force pump (water jet blower), mounted 

 together with all leads on a board, and provided with metal vacuum gauge. The device is connected 

 to the lecture table by 2 leads and is joined up to the water lead and the waste pipe. 



Alongside this apparatus, an experimental switchboard is fixed on the back wall over a double-door 

 cupboard; the switchboard consists of an iron framing and marble slab as front wall, for connecting 

 to a working voltage of 110 160 volts, for taking off currents of from 0.03 30 amps, and voltages 

 of from 0.3 110 volts from the network; together with a regulating resistance of 36 ohms resistance 

 in 30 stages and for a max. load of 530 amps., with double-contact switch having 30 contacts, 2 lead 

 fuses, 1 main switch, 1 ammeter, 1 voltmeter, 1 voltmeter switch, 1 switch for the shunt, 1 plug box ! 

 with plug and flexible. Further to the left are 1 water tap and 1 wash basin with overflow and waste pipe. 



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Pleass refer to References and Testimonials on pp. 9098. 



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