GB520065A - Improvements in gauges for measuring or checking dimensions - Google Patents

Abstract

520,065. Linear-dimension gauges. OSWIN, J. Jan. 16. 1939, Nos. 1384, 3929 and 9028. [Class 106 (ii)] Comprises constructions in which the lateral range of contact of the gauging surface increases from a minimum at one or more places at or at a distance from the leading or receiving end to a maximum or full gauging dimension further from the said end. The ends of the plug gauges shown are coned, chamfered, radiused, relieved and/or backed off at one or more places at an angle to the axis of the gauge. Examples are shown in Figs. 22, 26. The gauge shown in Fig. 31 has a groove to receive loose metal. The splines a<SP>1</SP> on the gauge shown in Fig. 35 are coned similarly to the leading end h. Fig. 43 shows a combined go and not-go gauge with the surfaces of the two portions continuous at one side. The go and not-go female gauge C in Fig. 46 comprises a ring C<SP>1</SP> with a gap D, the base D<SP>1</SP> of which is cut at an angle to give a lead to the go portion, the sides of the gap D forming the not-go gauge. The gauge C is used in combination with a plug gauge for checking the internal and external diameters of a bush E, Fig. 47 the male plug having go and not-go parts A and B and a push fitting part F. Marks G check the axial length of the bush and indicate whether or not the not-go part B has entered the bush. The plug can eject the bush from the ring gauge, and may have a stop H. Alternatively the plug gauge is of two diameters only, and the ring gauge has a go-part for the bush and a not-go part to fit the not-go part of the plug.