88 



OFFICIAL RFTROSl'ECTUK FXIIIBITION 



No. 62. 



it was patented. Slightly modified, it was put out by two small con- 

 cerns, and proved a total failure. 



This model is introduced for the purpose of giving information to 

 those who may wish facts in regard to a patent which merely served as 

 the foundation for extensive litigations. 



The line engravings also here shown are traced from [)holographs 

 of the actual machine. 



No 62. 



