| 摘要 |
556,856. Gauging-devices &c. BENKOE, I. April 15, 1942, No. 4993. [Class 83 (iii)] Apparatus for measuring changes of distance between two parts consists of a gauge mounted on one part, and a stop on the other part, the stop being frictionally mounted in its support so that distances greater than the range of the gauge may be measured by readjusting the stop. In the application to a lathe the cross-slide 12 mounted on a saddle 11 moving on the bed 10 carries a bracket 19 which accommodates a transverse rod 18 frictionally held in the bracket by spring plungers 22. The rod 18 has a pivoted end 17A carrying a pin 17 engaging the feeler 14 of a gauge 13 on the saddle so that the cross slide movements are recorded on the gauge. The link 17A is slidable in a bore 26 in the gauge housing and carries bosses 28, 29. The gauge dial has a protecting cover 34 and is movable to any angular position. Before an operation the rod 17A is moved to the left so that boss 29 abuts the housing and the gauge set to zero with the tool touching the work. The work may then be turned down to the full extent recordable on the gauge and another reading taken. The rod 17A is then again pushed to the left to the Fig. 2 position, the friction plungers 22 yielding to permit this movement. This restores the gauge to zero and an additional measured cut may then be taken. If the feed is not stopped when the gauge reaches the limit of its scale, the boss 28 engages the housing and further movement of the cross slide then causes rod 13 to slip in its mounting, thus preventing damage to the gauge. A modified form is illustrated in the Provisional Specification. |
