422 AMERICAN GRAPE TRAINING 



taut, slips the rope in the catch at a. The loose 

 end of the wire is then secured to the post, and 

 the machine is removed. Other forms of "come- 

 alongs" are shown in Figs. 267, 268, 269.* 



There are various means of securing the wires 

 to the end posts, but the commonest method is to 

 wind them about the post once and secure them 

 with a staple, or twist the end of the wire back 

 upon itself, forming a loop. The wires should be 

 drawn taut to prevent sagging with the weight of 

 fruit and leaves. In order to allow for the con- 

 traction of the wires in winter, some growers 

 loosen the wires after harvest, and others provide 

 some device which will relieve the strain. The 

 Yeomans patent grape-vine trellis is a simple 

 and effective lever -contrivance attached to each 

 wire, and which is operated to loosen the wires 

 in fall and to tighten them in spring. The end 

 post is sometimes provided upon the back with a 

 square -headed pin which works tightly in an inch 

 and a -half auger hole, and about which the end 

 of the wire is wound. A square -headed iron 

 wrench operates the pin, while the tension of the 

 wire around the side of the post keeps the pin 

 from slipping. This device is not durable, how- 

 ever. An ingenious man can easily contrive some 

 device for relieving the tension, if he should think 

 it necessary. As a matter of practice, however, 



*Manufactured by Eureka Tempered Copper Works, North Kast, 

 Perm a. 



