*3^$ 



BAIRD &L TXTLOCK (LOM)ON) LTD. 



908-909 



Heinrici's Hot-Air Motors. 



DESCRIPTION. 



All motors are supplied mounted ready for use, and should be iirmly fastened in position so that the motor 

 is immovable even when running at maximum speed. 



The motor is an air machine and therefore devoid of danger. The principal parts are 



A. The Fire-pot. B. The Working Cylinder. c. The Pisplacer. 



The bottom of the fire-pot is heated by a small burner ; the expansion of air thus produced sets the dis- 

 placer placed inside in motion. The warmed air is cooled in the upper part of the machine, which has the effect 

 of suction on the piston of the working cylinder so that it is drawn back into the outer cylinder. This explains 

 the rotating motion of the shaft. 



All the parts where friction occur must be lubricated by a drop of bone-oil before being set in motion. 



About two minutes after the burner has been lit turn the flywheels slowly round until the power generated 

 by the hot air in the machine takes effect. The motor will then run as long as the burnei is alight. 



Should the machine at first work irregularly (jump), loosen the compression screw on the cylinder a few 

 turns and screw it up lightly again as soon as the motion becomes regular. 



The larger the flame the quicker the motion of the machine. 



When the machine has long been unused, or when it has run for several consecutive hours, repeat the oiling 

 as above directed. 



In order to preserve the machine apply a little petroleum occasionally to the oiled parts in order to loosen 

 any oil that may have become hard, but the machine must not be taken to pieces. 



If the machine runs slower than at first, it is caused by the lubricating agent having become thick and 

 sticky. This is remedied by a few drops of petroleum. After using petroleum revert to bone-oil. For small 

 sizes petroleum only must be used and no fatty oil. 



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