CATALOG OF THE MECHANICAL COLLECTIONS J 03 



Method for lacing belt, Patent Office model, Patent no. 228390, issued to O. C. 

 Pomeroy, June 1, 1880. U.S.N.M. no. 309152. 



Belt fastener. Patent Office model, Patent no. 229278, issued to A. Schuhknecht, 

 June 2, 1880. U.S.N.M. no. 309149. 



Belt coupling. Patent Office model. Patent no. 238164, issued to E. O. Sawyer, 

 February 22, 1881. U.S.N.M. no. 309151. 



ROPE DRIVES 



Rope drive, Patent Office model, Patent no. 359597, issued to W. H. Dodge, 

 March 22, 1887. U.S.N.M. no. 308983. 



Rope driving apparatus. Patent Office model. Patent no. 478875, issued to 

 Macdonald, Williams, and Hitzeroth, July 12, 1892. U.S.N.M. no. 308849. 



SHAFT BEARINGS 



Antifriction journal bearing. Patent Office model. Patent no, 212744, issued 

 to L. Rank, February 25, 1879. U.S.N.M. no. 309143. 



Antifrictional bushings, Patent Office model. Patent no. 224453, issued to 

 H. Loud, February 10, 1880. U.S.N.M. no. 309144. 



Antifriction alloy, Patent Office model, Patent no. 429249, issued to Samuel 

 Singley, June 3, 1890. U.S.N.M. no. 308842. 



SHAFT COUPLINGS 



Shaft coupling, universal joint, Patent Office model. Patent no. 97575, issued to 

 Seth Wheeler, December 7, 1869. U.S.N.M. no. 308848. 



Coupling for tumbling shafts, universal joint, Patent Office model. Patent no. 

 105259, issued to S. C. Scofield, July 12, 1870. U.S.N.M. no. 30S847. 



Flexible shaft. Patent Office model, Patent no. 130253, issued to Nelson Stow, 

 August 6, 1872. U.S.N.M. no. 311181. 



Knuckle joint, universal joint. Patent Office model, Patent no. 215922, issued 

 to C. Q. Hayes, May 7, 1879. U.S.N.M. no. 308824. 



MISCELLANEOUS MECHANICAL TRANSMISSION DEVICES 



Connecting rod. Patent Office model. Patent no. 3981, issued to H. Hinkley, 

 April 1, 1845. U.S.N.M. no. 30S9S9. 



Reversible mechanism for countershaft. Patent Office mode). Patent no. 

 259572, issued to C. E. L. Moebius, June 13, 1882. U.S.N.M. no. 308S40. 



Motion transmitting device, roller gear. Patent Office model, Patent no. 

 705,624, issued to C. F. Stokes and C. B. McGlinchley, July 29, 1902. U.S.N.M. 

 no. 308846. 



Clutch pulley, Patent Office model, not identified. U.S.N.M. no. 308984. 



Planetary gear. Patent Office model, not identified. U.S.N.M. no. 308851. 



STEAM BOILERS 



The steam boiler is as old as the boiling and distilling processes 

 in cooking and manufacturing and naturally antedates the steam 

 engine. The first "power" boilers were described by Heron of Alex- 

 andria; they were used to supply steam or vapor to the steam- 

 operated devices, which he discussed. These descriptions are vari- 

 ously translated in name as vessels, cauldrons, and spheres, and the 

 drawings illustrating the several translations show them as hollow 



