Archive image from page 12 of Development of a hydrohandling system. Development of a hydrohandling system for sorting and sizing apples for storage in pallet boxes . developmentofhyd743dewe Year: 1966 A HYDROHANDLING SYSTEM FOR SORTING AND SIZING APPLES A hydrohandling system will substantially re- duce fruit bruise damage because of the low buoy- ant velocity compared to the velocity attained in an air drop. Table 3 shows that the highest veloc- ity which a large Mcintosh fruit attained in water was feet per second (). This is equiva- lent to a fall in air and can cause
Archive image from page 12 of Development of a hydrohandling system. Development of a hydrohandling system for sorting and sizing apples for storage in pallet boxes . developmentofhyd743dewe Year: 1966 A HYDROHANDLING SYSTEM FOR SORTING AND SIZING APPLES A hydrohandling system will substantially re- duce fruit bruise damage because of the low buoy- ant velocity compared to the velocity attained in an air drop. Table 3 shows that the highest veloc- ity which a large Mcintosh fruit attained in water was feet per second (). This is equiva- lent to a fall in air and can cause a slight bruise (5). Therefore, the areas of equipment that fruit may contact after floating up more than 2 inches should be covered with a cushioning ma- terial to prevent bruising of the fruit. Dropping apples in water from several heights showed that a considerable depth of water is needed to completely cushion falling fruit. Fruits sank to an average depth of 7 inches when dropped from a height of 2y2 inches; as expected, the relation between height of drop and depth of sinkage was not a linear relationship. Fruits dropped from 3 feet above the water sank only 18 inches. Cushioning materials should be used in combination with water if the depth of water is not adequate to completely decelerate the fruit be- fore it contacts another object. Fruit Submersion The submerging characteristics of apples were examined to ascertain the possible ways in which their natural buoyancy could be utilized in de- signing equipment to carry the apples beneath the water surface. For these studies, the labora- tory test tank was equipped with plexiglass win- dows on the side and bottom to enable observation of the fruit underwater. A flighted rubber belt mechanism (fig. 3), 5 feet long and 18 inches wide, with 2-inch flights spaced 10 inches apart, was mounted in the tank in a manner to allow adjustment of the angle of incline. It was pow- ered by a hydraulic motor so the speed of move- ment o
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Keywords: 1960, 1966, apples_handling, apples_storage, archive, book, bookauthor, bookdecade, bookpublisher, booksponsor, booksubject, bookyear, dewey_d_h_donald_henry_1918_, drawing, historical, history, illustration, image, michigan_state_university_agricultural_experiment_sta, page, picture, print, reference, u_s_department_of_agriculture_national_agricultural_, vintage, washington_d_c_agricultural_research_service_u_s_d
