Archive image from page 19 of Development of a hydrohandling system. Development of a hydrohandling system for sorting and sizing apples for storage in pallet boxes . developmentofhyd743dewe Year: 1966 12 MARKETING RESEARCH REPORT NO. 743, DEPARTMENT OF AGRICULTURE Figure 7.—Experimental underwater sizing device of tapered slats inclined at a 20° angle. The apples placed beneath the slats at the lower left of the photo rolled upward against the slats until the spacing permitted passage to the surface. speeds. The roller in a pair which turned down against the fruit was rotated twice a
Archive image from page 19 of Development of a hydrohandling system. Development of a hydrohandling system for sorting and sizing apples for storage in pallet boxes . developmentofhyd743dewe Year: 1966 12 MARKETING RESEARCH REPORT NO. 743, DEPARTMENT OF AGRICULTURE Figure 7.—Experimental underwater sizing device of tapered slats inclined at a 20° angle. The apples placed beneath the slats at the lower left of the photo rolled upward against the slats until the spacing permitted passage to the surface. speeds. The roller in a pair which turned down against the fruit was rotated twice as fast as the roller which turned upward against the fruit. Size partitions were used in the same manner as with the slat device. The helical sizer (8) shown in figure 9 was op- erated in a completely submerged position with size partitions at the water surface perpendicular to the axis of the device. Fruits were introduced inside the 8-inch-diameter helix, and the helix rotation carried them horizontally until their dimension permitted passage between the helix coils. Chain sizer tests were conducted with the device shown in figure 10, using the three chains shown in figure 11. The sizer was mounted in the la- boratory test tank on a 15° incline so that the chain carried floating fruits below the surface. Buoyant force then caused the fruits smaller than the chain openings to float upward through the chain links where they were collected after each trial. (Fruits larger than the openings pass under the sizer and float up on the other side of it.) Performance Tests Each device was tested using a sample of 20 fruits of each variety with eight replications. The sample was sized into three categories with the slat, roller, and helical devices. Before the test each fruit was measured at the greatest diam- eter and numbered. The same 20 fruits of each variety were used for all tests with these three sizers. Since the chain sizer separates fruit only into two sizes, the fruit sam
Size: 1321px × 1514px
Photo credit: © Actep Burstov / Alamy / Afripics
License: Licensed
Model Released: No
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
