BELT SYMBOLS 49 



GENERAL SYMBOLS 



A, Auxiliary belts: i. e., all belts from countershaft to the 

 machine used for driving auxiliary parts. These 

 may be subdivided as follows: 

 AO, Open auxiliary machine belt. 

 AC, Crossed machine belt. 



The machine number is prefixed in each case. Thus, the 

 belt for traversing the table of grinding machine 

 No. 1 6, would be indicated as 16 AO. 



C, Countershaft belts. That is, all belts from the main line 

 or jackshaft to countershafts. These belts can 

 be subdivided in the case of a two-speed counter- 

 shaft, as fast and slow belts and also as open and 

 crossed belts giving rise to the following symbols : 

 CFO, Fast belt from line shaft to countershaft, open. 

 CSO, Slow belt from line shaft to countershaft, open. 

 CFC, Fast belt from line shaft to countershaft, crossed. 

 CSC, Slow belt from line shaft to countershaft, crossed. 

 CRO, Reverse belt from line shaft to countershaft, open. 

 CRC, Reverse belt from line shaft to countershaft, 

 crossed. The machine number is prefixed in 

 each case. 



E, All belts from engine or motor to main line shaft or jack- 



shaft. These may be subdivided into open and 

 crossed belts, as follows: 

 EO, Open belts from engine or motor to jackshaft or 



main line shaft. 

 EC, Crossed engine or motor belts to main line or 



jackshaft. 



If more than one engine or motor is in use in the shop the 

 number of it is to be prefixed to the belt 'symbol. 



F, Feed belts. Subdivided into 



FO, Feed belts, open. 

 FC, Feed belts, crossed. 

 The machine number is prefixed in each case. 



