506 INDIANA HISTORICAL COLLECTIONS 



his attention towards discovering a substitute for type 

 metal, which he has at length done, and by which a com- 

 plete revolution will be produced in the typographical 

 art, particularly in the stereotyping process. Though I 

 do not wish to be understood to mean that his discovery 

 is confined to the stereotyping process. He has dis- 

 covered a new material for matrices, and a new method 

 of making them, as well as a new material of which to 

 form the plates. And what is remarkable is, that his 

 process is so simple that you can, in your office, form and 

 original design of any subject capable of being illustrated 

 by letter press printing, as well as taking a cast of any- 

 thing you may choose to put in form with type, which is 

 done in a few minutes ; and after the matrix is made, you 

 can cast a plate by the heat of the common stove, and 

 within fifteen minutes from the commencement of the 

 operation, have a perfectly finished plate perfectly fitted 

 to a block and on the press taking off impressions. — And 

 what is still wonderful, the blocks do not require any per- 

 fect fitting. And the plates made from this new metal 

 are more hard and more tough, and will wear as long as 

 those made from common type metal, and do not cost one 

 fourth as much. — Finished plates and blocks to stereotype 

 pages 5 by 10 inches, the inventor will contract to furnish 

 and warrant for a sum not exceeding perhaps five cents 

 each. 



But the great benefit that will accrue to the craft, 

 arises from the fact that every printer can make his own 

 stereotype plates, as well as plates from original designs, 

 at a very trifling expense in his own office. 



Steps are already taken to secure the patent, when the 

 invention will be offered to the public. 1 



An agent is also on his way to Europe to secure patents 

 there. 



So that after years of toil and expensive experiments, 



1 Warren's discovery was patented April 25, 1846. See Annual 

 Report of the Commissioner of Patents, 18^6, 145, 171, 240 {Execu- 

 tive Documents, 29 Congress, 2 session, S:doc. 52). 



