New York Agricultural Exterimext Station. 161 



were used for the horizontal telescoping sections. The use of 

 one-eighth inch tubing at end of arms together with one-eighth 

 inch T's and unions necessitated bushing the nozzles. The arms 

 are adjusted, with regard to position, by means of a sliding sleeve 

 attached to the vertical supply pipe. The motion is conveyed 

 by means of adjustable levers which connect with a clamp on 

 each arm. The sleeve is held in position by means of collars 

 provided with set-screws. 



It has been stated that the utility of the telescoping joints 

 in the vertical supply pipes carrying the arms, is doubtful. This 

 does not apply to any of the other telescoping joints. The hori- 

 zontal telescoping joints not only allow of contraction and exten- 

 sion of the carrier for rows set different distances apart but also 

 serve the purpose of a hinge joint when the arms are lifted for 

 turning around. Those of the arms not only allow of lengthen- 

 ing of the arm but also prevent breaking or wrenching of the 

 carrier when nozzles are caught in the asparagus. This results 

 not only from the ability of the joint to twist but also to pull 

 out entirely, yet the joint can be packed firmly enough to prevent 

 leakage and shaking or falling out. In fact, the combination of 

 telescoping and union joints answers the purpose of ball and 

 socket, or universal joints. 



The method of attachment of carrier to pump is shown in 

 Figs. 2 and 3. This connection serves as a partial support. The 

 carrier also rests upon the horizontal supports connected with 

 framework of truck as shown in Plate XIX, and upon an iron 

 brace shown at &, Plate XVII. The same parts are shown in the 

 various other illustrations. In addition it is anchored at points 

 6,^ V Plate XVII. These not only help to hold and steady the 

 carrier but also serve as guides when lifting and adjusting the 

 parts. 



The brake for lifting the arms is anchored to the cross of the 



main supply pipe at x, Fig. 3, Plate XVII, while the brake bar 



is attached to lateral supply pipe as show^n in Fig. 4, o, also in 



Plate XVI, 0. The work of this brake is shown in Plates XIX 



and XX. 



11 



