GB398697A - Nut tapping machine - Google Patents

Abstract

398,697. Tapping nuts. CLOUSE, W. L., Tiffin, Ohio, U.S.A. Dec. 30, 1932, No. 36954. [Class 83 (iii).] A nut-tapping machine in which blanks are intermittently fed to a holder where they are rotated relatively to a tap having a curved shank, is provided with a reciprocating table with a nut-guiding channel into which the tap shank fits and with means for adjusting the nuts to place them for entry into the channel. The nuts, fed down a shoot 1, are pushed intermittently into a rotating holder 9 by a plunger 3 which is actuated by mechanism suitably connected to the main driving gear to give the correct timing to the movements ; placer pieces 10 are arranged inside the holder to engage alternate nut faces, their front ends are bevelled and project beyond the holder so that the nuts may be slid smoothly into position, recesses 33 at the back ends of these placer pieces into which the nuts automatically fit on leaving the tap 11 prevent finished nuts from being pushed forward when the table and nutpositioning means are in motion. The table 14 mounted on guides 15, 16 and reciprocated from the main driving shaft 23 by cam and lever mechanism has an arcuate channel 18 along which nuts can slide, a restraining strip 19 is fastened across the ends of the channel to hold the arcuate tap shank, which passes through the centres of the nuts, in place. The nut-positioning means 20 is fastened to the table and serves to turn the nuts into the correct position for entry into the channel 18 as the table moves forward ; the finished nuts pass out of the channel into a receptacle, not shown.