GB1003623A - - Google Patents

Abstract

1,003,623. Gauging apparatus. CHICAGO MACHINERY LABORATORY Inc. Mar. 27, 1962 [April 3,1961], No.11752/62. Heading G1M. [Also in Divisions B4 and B6] In a stapling machine for book signatures SG conveyed towards a stitching mechanism SM along a saddle plate SD over which they are draped so as to straddle the latter, the thickness of one side of the signature groups is gauged at an apertured portion 20N of the saddle plate and the wire fed to the stapling heads arrested in response to a gauging signal corresponding to a non-standard number of pages. As shown best in Fig. 6, the sheets pass between an idle roller 31 and a cam 30 rotating with a driven shaft in synchronism with the feed of the signature groups, so that the high portion 35 is operative in gauging. The idle roller 31 is carried between areas 63 fast with a shaft 61 which is rocked by the cantilever action of the roller 31 if the latter deflects from a detum position due to the passage of a faulty signature group. A long spring-loaded lever 85 rigid with shaft 61 will thus also be deflected into either of the dotted positions and close one or other of a pair of microswitches 94, 95 to energize a solenoid and, by means of a push-rod, pivot clockwise a lever in the stitching mechanism to hold a pivoted feed holder out of contact with the stapling wire used therein. A timing cam 116R (Fig. 6) bearing against a roller 115 on the lever 85 has a dwell 116L and is driven in synchronism with the gauging cam 30. The latter holds the lever 85 in the datum position until the dwell is operative (during the time the cam portion 35 is operative in gauging), the lever 85 then being primed in a floating condition for rocking in either direction. Provision is made for adjusting the separation of the roller s and the position of the cam 30 on shaft 36. U. S. A. Specification 1,252,011 is referred to.