Improvements in and relating to Inside Gauges, Inside Micrometer Gauges and the like.

摘要

19,011. Williams, D. Aug. 20. Linear-dimension gauges. - An internal gauge, which is especially adapted for measuring the internal diameter of grooves in cylinders and eccentric straps, is arranged so as to be collapsed during removal from the article to be measured and afterwards returned to its adjusted position. It consists of a tubular shank 5 secured in one end of a split chuck 1 by a nut 3, and a rod 4 sliding in the shank 5 and chuck 1 and secured in the position in which it is adjusted by a second nut 3. The chuck body 1 is formed with a shoulder 13 through which pass screws 12 to engage with slots 14 in the lower end of the shank 5 and thus limit its movement in the chuck. The shank 5 is secured in its uppermost position in the chuck, while the rod 4 is adjusted to the diameter to be measured ; the upper nut 3 is then slackened to allow the shank to be pushed down by the length of the slots 14. After withdrawal, the shank is returned to its former position, and then secured by the nut 3. The upper end of the nut may be fitted with a micrometer screw 6, adjusted by a nut 7 and provided with a locking nut 9. The movement of the screw 6 is limited by a screw 10.