

'**''*^ ■'■~-^ — , . . . . Jj 



299 



of funnels placed around the periphery of a turntable. At a certain point in 

 the rotation, each funnel contacted a microswitch that actuated the solenoid 

 which delivered the liquid into the stem of the funnel by depressing the syringe 

 plunger through a lover. The grandlure was then absorbed by the filter. I 

 subsequently constructed a device that is soraewhat faster and is easier to 

 asscrablfc. The same -principle is used, but the pipetting syringe is operated 

 horizontally and is fitted with an 18-gauge needle that injects the solution 

 of grandlure into the filters. Filters are injected at a rate of ca. 3000/hr 

 with a variation i.x dose of ca. ±2%. 



578, . 1974. An improved device for dispersing pheromone solutions. J. 

 Econ. Entomol. 67: 558. 



A machine for dispensing grandlure (the synthetic pheromone of the boll weevil, 

 Anthonomus grandis Rohcman) into cigarette filters that involved the use of a 

 solenoid-driven syringe was built by Moody. McKibben built a similar machine 

 that produced about 3000 treated filters/h. A further improvement eliminated 

 the solenoid to drive the syringe but retained the injection principle. In 

 one year the improved machine injected 330,0^ filters with no major parts 

 fa1xurcs-r " 



579, , and Davich, T. B. 1977. Air dropped bait dispensers for attracting 

 and killing the cotton boll weevil. U.S. Patent No. 4,027,420. 



A new apparatus and method for attracting and killing cotton boll weevils is 

 disclosed. Specifically this apparatus consists of a toxic material affixed 

 to a substrate which is air dropped onto fields of growing cotton. Boll weevils 

 are attracted to those air dropped baited traps and killed upon contact. 



580, ; Davich, T. B.; Gueldner, R. S.; Hardee, D. D.; and Hedin, P. A. 

 1974. PoljTneric compositions for attracting cotton boll weevils. U.S. 



Patent No. 3,803,303. i 



