J^'74 BULLETIN 173, U. S. NATIONAL MUSEUM 



MAGNETOS, DYNAMOS, AND GENERATORS 



Vincent Apple ignition dynamo, 1895. Gift of the Vincent G. Apple Lab- 

 oratories. U.S.N.M. no. 310748. 



Apple Gas Engine Igniter (dynamo), 1899. Gift of the Vincent G. Apple 

 Laboratories. U.S.N.M. no. 310749. 



Apple belt pulley clutch governor for regulating ignition dynamo, 1902. 

 Gift of the Vincent G. Apple Laboratories. U.S.N.M. no. 310759. 



Automobile generator, 1902. Gift of Edward T. Birdsall. U.S.N.M. no. 

 309623. 



Flywheel magneto, 1902-03. Gift of the Vincent G. Apple Laboratories. 

 U.S.N.M. no. 3107.50. 



Atwater Kent high-tension ignition system. From Ransom Matthews. 

 U.S.N.M. no. 308517. 



Motsinger magneto. From Ransom Matthews. U.S.N.M, no. 307309. 



Automobile generator (incomplete), 1904. Gift of the Vincent G. Apple 

 Laboratories. U.S.N.M. no. 310752. 



Automobile generator and starter combined, 1910-11, Aplco, model A-75. 

 Gift of the Vincent G. Apple Laboratories. U.S.N.M. no. 310735. 



Controller for Aplco generator-starter above. Gift of the Vincent G. Apple 

 Laboratories. U.S.N.M. no. 310760. 



Apple Electric Co. generator, model S-R.2, 1911. Gift of the Vincent G. 

 Apple Laboratories. U.S.N.M. no. 310754. 



Bosch magneto, NU-4. From Ransom Matthews. U.S.N.M. no. 308518. 



Eisemann magneto (impulse starter). Gift of the Eisemann Magneto Cor- 

 poration. U.S.N.M. no. 306998. 



Gorman Bosch magneto. From Ransom Matthews. USNM. no. 308519. 



Splitdorf magneto (accessory on Buda engine, U.S.N.M. no. 30S341), 1924. 

 Gift of the Splitdorf Electrical Co. U.S.N.M. no. 308341. 



Acme magneto, type "JS." From Ransom Matthews. U.S.N.M. no. 308116. 



Bosch magneto, type 1822H. From Ransom Matthews. U.S.N.M. no. 30S117. 



IGNITERS 



C. C. Chamberlain "make and break" igniter, 1902. From the United States 



Patent Office. U.S.N.M. no. 308720. 



"Make and break" igniter. From Ransom Matthews. U.S.N.M. no. 307370, 

 Webster Electric Co. combined rocker magneto and "make and break" 



Igniter. Type A. From Ransom Matthews. U.S.N.M. no, 308520, 



SPARK PLUGS 



The collection includes about 270 spark plugs of almost as many designs, in- 

 tended principally for automotive engine use. The majority of these were re- 

 ceived from Ransom Matthews, but they include also gifts from Daniel A. 

 Abbott and the Splitdorf Electrical Co, 



ENGINE STARTERS 



Compressed-air automobile-engine starter. Experimental model. Gift of 

 Albert M. McMillan. U.S.N.M. no. 310828. 



"Everready Automatic Engine Starter." A spring-actuated, automobile-engine 

 starter. Gift of Van Dusen's Garage. U.S.N.M, no. 310974. 



