Graton & Knight 



Standardized Series O 



Leather Belting 



Tanned by us for- belting- use fPfe 



A Bulldog for Punishment 



THE wheels of industry are turning faster than ever 

 before. Production is the world's problem. On 

 thousands of pulleys SparOak Leather Belting is 

 —~i singing through the strain of 24-hour days year in and year 



.; ■' out. SparOak is a combination belt. It has a live, elastic 



inner facing of Graton and Knight Spartan Leather that 

 grips a pulley as it stuck to a steer's back. Its pliability 

 insures perfect operation under high speeds with fluctuating 

 fill loads running on any size pulleys. The outer ply is of Oak 

 IjjJF Tanned Center Stock and possesses unsurpassed toughness 

 ^^ and durability. Pulley flanges, step cones, and the punch- 

 ing of shifters find it a bulldog for punishment. 



SparOak 



* Belting 



Are you getting 100 per cent results in your power transmission 

 these feverish production days ? Too often our engineers find the 

 wrong belt on the job. The requirements of power transmission 

 fall into a small number of classes. Graton and Knight's booklet 

 on Standardization in Belting gives the Standard Belt for each one 

 of these classes. It's a small book, but it has solved many a trans- 

 mission problem. It will be sent free upon request — without 

 obligation. 



THE GRATON AND KNIGHT MFG. COMPANY 

 Worcester, Mass., U. S. A. 



Oak Leather Tanners, Makers of Leather Belting and Leather Products 

 Branches and Distributors in all Principal Cities 





SparOak in a Cotton Mill 



Spar Oak Belting is seen in this picture 

 operating on spinning frame di nes in 

 one of the largest cotton mills in the 

 world. SparOak's jieribiliti/. pulley 

 gripping power, and endurance have 

 matte it the standard for work of this 

 kintL SparOak with its permanent 

 elasticity and tensile strength will pull 

 its land at top speed for years with 

 a minimum number of stops. 



' 



'Mention The Geographic — It identifies you' 



