Hidden uplifting frame with a lifting mechanism located in the vertical side and in the lower horizontal profile of the sash, with a handle vertically arranged to make a 180° degree rotary movement and with a locking mechanism, characterised by the fact that it is comprised: - of rubber means in addition to brushes to the hidden frame, rendering the frame waterproofing, - of a lid that bears a hole for a shaft with square cross-section to a part of it of it, rotating the handle, and a locking hole for mounting the lock, - of an inner guide plate bearing a through hole for lock corresponding and coaxial to the hole of the lid, bearing a through hole corresponding and coaxial to the hole and having seating holes (15 & 26) for seating and rotating the connecting gear shaft and the locking gear, respectively, - of an outer guide plate with a bearing hole corresponding and coaxial to the holes (7 & 7a) for seating the handle gear, bearing a through hole corresponding and coaxial to the hole of the inner guide plate for seating and exiting the shaft -with square cross-section at a part of it-to rotate the handle, which is connected to a lifting mechanism of the frame, with a bearing hole for seating and rotating the locking gear shaft and a recess formation corresponding and coaxial to the through holes (8a and 8) of the inner guide plate and the lid, respectively. - of a handle gear with a rotary input shaft -with square cross-section to a part of it, of the handle, the shaft passing through the coaxial through holes (7 & 7a), a connecting gear with a rotary output shaft -with square cross-section to a part of it-, of the handle, with the two gears (17 & 18) spaced apart and a locking gear connected to the outer side of the chain, which is immobilised by a member of the lock passing through the hole of the inner guide plate and entering the recess formation on the bearing formation of the outer guide plate, all three gears (17, 18, 19) are positioned between the inner guide plate and the outer guide plate. - a lock located within the coaxial holes of the lock (8 & 8a) and having a locking member entering the recess formation of the outer guide plate, - a chain surrounding the two gears (17 & 18). - of rubber means in addition to brushes to the hidden frame, rendering the frame waterproofing, - of a lid that bears a hole for a shaft with square cross-section to a part of it of it, rotating the handle, and a locking hole for mounting the lock, - of an inner guide plate bearing a through hole for lock corresponding and coaxial to the hole of the lid, bearing a through hole corresponding and coaxial to the hole and having seating holes (15 & 26) for seating and rotating the connecting gear shaft and the locking gear, respectively, - of an outer guide plate with a bearing hole corresponding and coaxial to the holes (7 & 7a) for seating the handle gear, bearing a through hole corresponding and coaxial to the hole of the inner guide plate for seating and exiting the shaft -with square cross-section at a part of it-to rotate the handle, which is connected to a lifting mechanism of the frame, with a bearing hole for seating and rotating the locking gear shaft and a recess formation corresponding and coaxial to the through holes (8a and 8) of the inner guide plate and the lid, respectively. - of a handle gear with a rotary input shaft -with square cross-section to a part of it, of the handle, the shaft passing through the coaxial through holes (7 & 7a), a connecting gear with a rotary output shaft -with square cross-section to a part of it-, of the handle, with the two gears (17 & 18) spaced apart and a locking gear connected to the outer side of the chain, which is immobilised by a member of the lock passing through the hole of the inner guide plate and entering the recess formation on the bearing formation of the outer guide plate, all three gears (17, 18, 19) are positioned between the inner guide plate and the outer guide plate. - a lock located within the coaxial holes of the lock (8 & 8a) and having a locking member entering the recess formation of the outer guide plate, - a chain surrounding the two gears (17 & 18).