GB190615886A - Improvements in Paper-folding and like Machines. - Google Patents

Abstract

15,886. Kleim, G., July 13. Folding paper.- In a machine for folding paper, the unfolded sheets are fed alternately from piles b<2> on brackets b, p r o - vided with rollers adapted to run in vertical grooves a' in the frame a, and raised automatically as the sheets are removed by means of ratchet mechanism b<4>, actuated from reciprocating bars c<5>, and screws b<3>. The front edge of the top sheet is lifted by pneumatic suckers c on bars c<1> having rollers c<8> adapted to reciprocate on pivoted rails d, which are oscillated by links d<2> and a cam d<3> on the shaft a<2>. The suckers c are reciprocated by links c<3> connected to pivoted arms c<2> operated by bars c<5> and a cam c<6>. The centres of the rollers c<8> are arranged in line with the rear edges of the suction nozzles c, so that the latter can be tilted against the action of spiral springs, by forked levers e rocked by a cam on the shaft a<2> to bend up the edge of the sheet, as shown in Fig. 7, after which the sheet is finally separated by a blast of air from a nozzle f<1>. The suction nozzles are connected alternately to the suction end, and the blast nozzles f to the compression end, of a double-acting pump f, driven by gearing f<2>, f<3> from the main shaft a<2>, by a valve consisting of a casing with six ports, within which is a plug formed with two angular bores and oscillated by means of a toothed sector and a cam on the shaft a<2>. After having separated the sheet, the suckers are lifted from the pile by the rails d and convey the sheet forward to a rotating feed-roller g and a co-operating drop roller h, which feed it beneath a foldiog blade i. The rollers g are driven by chain gearing g<2> and spur gearing g<4> from a wheel g<5> on the shaft a<2>, and the drop rollers h are actuated by link-work trom a cam on the same 'shaft. After being registered against a stop, the sheet is folded between rollers by the blade i, which is reciprocated vertically by a rod il and cam-disk i<2>. The sheet thence passes down a shoot a<6>, between the underside of a feed-roller g and a co-operating roller l, operated by a cam on the shaft a<5>, to a position over a second set of folding-rollers n, between which it is folded at right-angles to the first fold by a second blade actuated by a face cam on the wheel g<4>. The sheet may be further folded by passing to other sets of similarly arranged folding-apparatus, or delivered.