Bache.] 



322 



[Nov. 17, 



mand, the flow of which is compelled to pass continuously around the 

 meat in process of cooking, perfectly controlled by a simple and a single 

 damper, the waste products being liberated into the chimney. 



I will anticipate being ask why, if this be so, I have not prosecuted my 

 claim by renewal of it. I reply that it is my intention to take that course 

 when I have time. I still hope to give the first examiner, if he lias sur- 

 vived the precariousness of office, or if not, his successor, an opportunity 

 of enlightenment tlirough further demonstration, and of change of mind as 

 to the possibility of a claim to the invention of an oven, characterized by 



Fia.i 



the puritj' and the regular flow of its air, being invalidated by the previous 

 invention of an oven with a gauze-wire door. If an examiner, wlioever 

 lie may be, is not open to conviction on a point, then the appeal of a case 

 to the Board of Examiners of the Patent Office is always open to the ai>- 

 plicant. 



The two diagrams on the blackboard represent the verj^ simple device 

 by which the object that I proposed to myself can be accomplished. 



Figure 1 represents a longitudinal section of a modified cooking stove, 

 illustrating; the device. 



