Today in 1901, US Patent 667478 A was issued, an invention of Adolf Wolf, for his “Hop-Drying Box.” There’s no Abstract, although in the description it includes this summary:

My invention relates to boxes for holding loose material, such as hops, in the process of drying the same, and has for its object to provide a construction which permits the box to be readily turned upside down without discharging the contents thereof and while leaving the top open for a thorough evaporation and escape of steam. For this purpose I provide the box with a removable top and a removable bottom, constructed and secured in a novel manner, as will be fully described hereinafter, and particularly pointed out in the appended claim.