The pneumatic player, the regulation and repair of some modern types . ^ we have the phrasing lever, which is arockmg tablet that, being connected direct to the THE ANGELUS 35 Tracker ttjihe>.. motor governor, controls the speed by pressingeither end. The right end increases the speed, andthe left reduces it, to the halt if necessary. Correct tracking is obtained by raising orlowering a lever sliding on an inclined metalthrust block on the right hand of the spool box. 36 THE PNEUMATIC PLAYER Should any reader have occasion to overhaula cabinet Angelus, he will find that, though thediaphragm
The pneumatic player, the regulation and repair of some modern types . ^ we have the phrasing lever, which is arockmg tablet that, being connected direct to the THE ANGELUS 35 Tracker ttjihe>.. motor governor, controls the speed by pressingeither end. The right end increases the speed, andthe left reduces it, to the halt if necessary. Correct tracking is obtained by raising orlowering a lever sliding on an inclined metalthrust block on the right hand of the spool box. 36 THE PNEUMATIC PLAYER Should any reader have occasion to overhaula cabinet Angelus, he will find that, though thediaphragm pneumatic is employed, it operates inan exactly contrary manner to the model we havebeen discussing. In the cabinet, the pneumaticsare inflated and push out the metal cranks to theirwork, and this means that both primary andsecondary valves admit air; whilst in the moremodern interior player the secondaries behave inthe conventional manner and exhaust the motivepower. The accompanying sketch is taken from theup-to-date model. A is the primary valve, whichwhen lifted by the perforations in the roll admitsair to the secondary pouch, pushing out the valve(B) and collapsing the diaphragm pneu
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Keywords: ., bookcentury1900, bookdecade1920, bookidpneumaticpla, bookyear1921
