The picture shows an 18 in. Spar- 

 Oak Belt driving a beater in a paper 

 mill — hard duty in a warm, moist 

 atmosphere. SparOak is the answer 

 to a great many perplexing belt prob- 

 lems, saving power and standing up 

 under the most severe conditions. 



If you have a troublesome belt 

 drive, consult us as to what belt is 

 required. Maybe it is SparOak ; but 

 in any event one of the Graton & 

 Knight Standardized Series of Belts 

 will fit exactly. Write for our book- 

 let on Standardized Belting. 



A Rugged 



Pulley-Gripper 



There is nothing like leather 

 for belting, and SparOak 

 Leather Belting has peculiar 

 advantages all its own. 



SparOak is a two-in-one 

 belt, combining rugged 

 strength with unique pulley- 

 grip. 



^SparOak 



Belting 



Two kinds of leather enter into a 

 SparOak Belt. The outer ply is oak 

 tanned, selected center stock. The 

 ply next the pulley is G & K Spartan 

 leather, tanned to give pliability and 

 traction power unequalled by any other 

 material. 



SparOak Belts grip from the start. 

 During the weeks most new belts take 

 to "work in," a SparOak Belt is giving 

 full power and keeping production up 

 to normal. They withstand repeated 

 shifting, and the wear against step 

 cone or flange pulleys. They render 

 efficient service on drives with high 

 speeds, small pulleys, and heavy loads. 



THE GRATON & KNIGHT MFG. 

 COMPANY 



Worcester, Mass., U. S. A. 



Graton & Knight 



Standardized Series O 



Leather Belting J 



Tanned by us for belting use ^J| 



'Mention The Geographic — It identifies you' 



