LACED JOINTS 57 



should be placed on either side of the joint before it is 

 squeezed. After glueing the splice should be pegged with 

 shoemaker's pegs | in. apart. 



The belt glue should be applied hot to the splices whenever 

 possible, although it may sometimes be necessary to use 

 a fast-setting cold glue. The Tabor Manufacturing Co. 

 recommends a glue composed of 



Page's liquid fish glue 2 parts (measure) 



Russian liquid isinglass i part (measure) 



A belt cement recipe given in Industrial Engineering, Octo- 

 ber, 1913, calls for equal parts of glue and American isin- 

 glass, which are allowed to soak in water for ten hours. 

 The mixture is then brought to the boiling-point and pure 

 tannin is added until it has the appearance of the white of an 

 egg. This glue is applied hot to the surfaces of the splice. 



Endless belts should always be run so that the feather edge 

 of the splice on the side next to the pulley points away from 

 the pulley as the splice approaches it. 



The main objection to endless belts is that the joints 

 must be made with the belt in position, which is always 

 inconvenient and often impossible. Furthermore there is no 

 way of tightening them except altering the center line distance 

 of the pulleys, unless the joint is broken and remade. Either 

 method is troublesome and expensive, and therefore, despite 

 their manifest advantages in other respects the endless belt 

 is limited in its application. The common practice is there- 

 fore to make all the joints but one in the belt cemented joints, 

 and to make the final joint a laced or wired one. 



Laced Joints. The ordinary belt lacing is a strip of raw- 

 hide whose width depends on the size of the belt to be laced. 

 The ends of the belt are cut square with the edges and butted 

 together, after which holes are punched in the two ends with 

 an oval punch, the large diameter of the oval being parallel 

 with the sides of the belt. The lacing is started at the center, 



