GB1240670A - Improvements in or relating to pipe supports - Google Patents

Abstract

1,240,670. Constant tension spring units. PIPE SUPPORTS Ltd. 12 Dec., 1969 [21 Sept., 1968], No. 44967/68. Heading F2S. In a spring-and-lever constant-tension support for piping, a pivotal connection 27 between the lever 30 and a draw-bar 23 associated with the spring 14 is made in such a way that its distance from the lever's fulcrum axis 31 is adjustable. The adjustment means consists of a shaft 28 which is axially slidable in a guide block 29 carried by the lever 30, adjustment being by means of a screw mechanism such as a nut 37 co-operating with a threaded extension 34 of the shaft 33. The pivot 27 is either, as in Fig. 1, a direct pivotal connection to the shaft 33 or one involving a link 67, Fig. 4, pivoted at one end 68 to the lever and at the other end 69 to the draw-bar, the link engaging the free end of the shaft. In the Fig. 4 form, the whole length of the shaft 64 may be screw-threaded and co-operate with a threaded bore in the guide block 63. Other features apparent in Fig. 1 include: an adjustable connection between the draw-bar and the spring, involving the use of an eccentrically pivoted triangular member 25 which can be rotated to provide three discrete positions of adjustment; and an abutment 48 which engages the lever in the position shown at one end of its permitted range of pivotal movement and engages a hook-like lever part 49 at the other limit. Fig. 4 includes, besides the adjustment means above mentioned, a like means for adjusting the distance between the lever fulcrum 62 and the pipe hanger 77. Fig. 3 (not shown) depicts a modification in which the spring's axis is vertical. Mention is also made of means, including a fixing pin, for immobilizing the lever when cleaning a pipe connected thereto. The pivotal connection between the pipe hanger and the lever may be of the form described in Specification 1,238,481.