GB769477A - Improvements in devices for connecting tubes, for instance scaffolding tubes - Google Patents

Abstract

769,477. Clamp fastenings. SPREEUWENBERG'S AANNEMINGSBEDRIJF N.V., P. March 9, 1955 [March 13, 1954; Feb. 9, 1955], No. 6984/55. Class 44. [Also in Group X] A clamp for connecting two scaffolding or other tubes 21, 22, Fig. 1, at right angles to one another comprises two rigidly connected or integrallyformed socket halves 1, 2 arranged at right angles to one another, each of which carries a complementary socket half 3 hinged to it, the means for clamping each complementary pair of socket halves around the tube consisting of a connecting link 7, one end of which is pivoted to one socket half, for instance, to the free end of the hingedly mounted socket half 3, so as to turn about a rotatable eccentric pin 17, Fig. 3, and which is adapted to be brought into engagement at its free end with the socket half complementary thereto. The pins 17 have squared end portions engageable by a spanner for rotation of the pins 17 to tighten the clamp. As described, the pins 17 are mounted between pairs of spaced plates which form the hingedly. mounted socket halves 3. Each link 7 has at one end a hole, Fig. 3, engaged over the pin 17 between the spaced plates, and at the other end is of T-shape having two wedge-shaped teeth 23 which engage selectively with teeth formed on a pair of projections 9 on the socket halves 1, 2, enabling adjustment to be made for different diameters of tubes 21, 22. Rotation of the pin 17 is limited by a stop 20 formed on a washer 18 carried by the squared end of the eccentric pin 17. In a modification, Fig. 4 (not shown), the free end of the connecting link 7 engages the socket half 1 in a non-adjustable manner.