GB191100604A - Improvements in Wrenches. - Google Patents

Abstract

604. Stenerson, O., and Anderson, C. T. Jan. 9. Sliding-jaw wrenches. -Relates to spanners of the class having a tubular rotatable handle engaging the shank of the fixed jaw by interrupted threads, the handle having a rotatable connexion with a movable jaw sliding on the shank. The movable jaw 8 is provided with a lip 12 engaging in a peripheral groove 11 in the upper end of the rotatable handle 10 and with a resilient bar 14 screwed thereto and having its lower end 14<1> turned inwards to engage the handle groove, which is formed with notches 16 as shown in Fig. 3. When the handle has been turned to bring its locking teeth 18 into engagement with the shank teeth 17, or diametrically opposite thereto, the end 14<1> of the resilient bar engages one or -other of the notches 16 and yieldingly holds the handle against rotation. One of the screws 15 for fixing the resilient bar projects into a groove 13 along the shank and serves as a guiding and limiting means for the movable jaw. Fig. 7 shows a modification in which the shank and handle have two sets of locking teeth 17', 18<1> respectively, the resilient bar and notches being adapted to maintain the handle against rotation only when one or other set of threads are in engagement, but, if desired, another pair of notches at right-angles may be provided to maintain the handle in position when the threads are disengaged.