Cape-Waine Anaesthetic Ventilators - memories!!!
They were built by Cape Engineering in Warwick. Originally as the Waine Ventilator and then Dr Waine, Consultant Anaesthetist (affectionatley known as Curly due to his lack of hair!!??) added an anaesthetic head to it for use in theatre.
They were very reliable machines mainly due to the bicycle chain that ran the internal bellows!!
Interestingly, Cape Engineering were mainly into building parts for tanks and armoured vehicles.

Sometimes You Can't Make It On Your Own.