FIELD: mechanical engineering. SUBSTANCE: cramp is composed of two webs 1 and 2 and two guide rods 3 and 4 which allows the structure to be rigid. Webs 1 and 3 have lead screw 5 with left and right one-entrance trapezium thread at the ends. The lead screw is set in motion by handle 6 with ratchet mechanism 7 mounted on the square at the right end of the lead screw. Webs 1 and 2 has shaped openings answered to the head. EFFECT: improved design. 4 cl, 3 dwg
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Authors
Dates
1996-08-27—Published
1990-12-25—Filed