Fecha de publicación: 14/04/1921 Fuente: WIPO "hive" 161,339. Ballantyne, J. B. Jan. 23, 1920. Beehives.-A beehive is adapted to hold bar frames of any size by constructing it of superposable case-units having removable inner walls which may be plain or rabbeted as shown in Fig. 2. Each unit A has grooves or guides 3 with recesses 4 carrying pivoted or slidable stops 5, the distance between the grooves on one side being greater than that on the adjacent side. The inner walls B slide in the grooves 3 and are built up to support frames of different heights by making the rabbets overlap or not, as shown in Fig. 7. When the frame c is in place, a bee-way 8 is left, play of the frame being prevented by strips attached to the case-unit, and a double bee space 10 is provided underneath the frame. An alternative construction allows extra space and ventilation for wintering bees. The pivoted stops 5 are usually turned to block the grooves 3 and support the walls by engaging one of the corners 7 but are turned to clear the grooves when one wall unit is located partly in an upper and partly in a lower case as shown in Fig. 7. Ar alternative construction of the case-units avoids end play of the bar frames without using strips attached to the case-unit. The grooves 3 may be constructed sufficiently broad to be provided with a partition to form alternate guideways.