FIELD: process engineering.
SUBSTANCE: proposed appliance consists of tightening device fitted in door leaf or frame slot. Note here that said tightening device is brought in engagement with tightening unit arranged in said slot. Said tightening device includes tightening link contacted by spring to displace vertically. Note that tightening unit has indrawn inclined surface while tightening device incorporates means to drive tightening link in engagement with indrawn inclined surface. Note that tightening link engaged with indrawn inclined surface slides along said surface by force of spring.
EFFECT: perfected design.
17 cl, 8 dwg
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