GB387590A - Improvements in and relating to wrenches - Google Patents

Abstract

387,590. Wrenches. WALTER, C., 19, Heckinghauserstrasse, Barmen, Germany. July 7, 1932, No. 19251. [Class 61 (iii).] A wrench of the kind comprising a hinged gripping member in the form of an incomplete loop which in operation is contracted to frictionally grip the work has the loop member c of decreasing thickness from the ends c<1>, c<2> to the middle part c<3> and has a spring f interposed between the end of the handle a and the end c<1> of the gripping member c pivoted to the handle at b and acting to cause a lug d on the handle to press on the end c<2> of the gripping member thereby contracting the latter and ensuring driving engagement with the work. Round work is gripped by the member c direct but for hexagonal &c. work a socket k is secured in the gripping member by means of an integral flange at one side and an annular spring at the other, split socket reducers k<1>, k<2> being also employed if necessary. The gripping member c may be of unitary construction or built up of flat inner members secured by one or more rivets j between outer members having extensions c<5> to take the pivot pin b, the members being gapped at e.