Patent GB-190115852-A (GB)
Title: Printing Press.
Inventor: SCOTT WALTER
Filed: 1901-08-06
Granted: 1902-05-15
Abstract: 15,852. Scott, W. Aug. 6. Cylinder machines with plane printing-surfaces; feeding sheets; inking -apparatus. - Relates to (1) means for feeding the sheets, (2) inking-apparatus, and (3) means for reciprocating the type bed &c. Fig. 2 shows the front end of the feedboard D, on which the sheets are fed to the usual gauges a<2>, a<3>, and from which they are taken by the grippers of the impression cylinder. The fingers a<2>, a<3> and sheet holder a<4> are raised and lowered by: cams. The board D has sheet-supporting extensions or fingers a<10>, of thin material such as paper &c., and these are fixed adjustably on the upper side of a recessed part a<9> of the board D, which may be a cut-away part or may be formed by an attached piece a<8>. The fingers do not project at a<9> above the surface of the board D. The lower ends of the stops a<2> are recessed to straddle the fingers a<10>. Fig. 5 shows the inking-apparatus. Ink is transferred from the fountain roller b<11> to the roller b<12> and distributers b<1> by a roller b<10> in vibrating arms b<9> on a shaft b<8> operated by an arm b<7>, rod b<6>, and cam b<3>. The fountain roller is moved by ratchet mechanism driven by a segment b<19> gearing with a segment b<18> on an arm b<17> oscillated by a rod b<16> and cam b<14>. On the shaft b<8> is an arm b<13>. which contacts with the end b<27>, of an arm b<25> to regulate the extent of dwell of the roller b<10> on the fountain roller. The arm b<25> is pivoted at b<23>, and is operated by an arm< >b<24> engaging a cam on the segment b<19>. The relative positions of the arms b<24>, b<25> are adjusted by a screw b<29>. The motion of the roller b<10> is stopped after it leaves the roller b<12>, by a brake sliding in guides on one of the arms b<9>. The brake has a rounded cam portion b<35> engaging a cam - lever b<41> pivoted adjustably on the framing. A link connects the lever b<41> to the brake. Fig. 11 shows part of the means for reciprocating the type bed. To the underside of the bed is fixed a hanger G, on which are two straight racks g<1>, g<2>, with which the wheel m<1> gears alternately, the shaft M being raised and lowered to move the wheel m<1>. On the hanger G, at opposite ends of the racks g<1>, g<2>, are curved racks g<3>, g<4>, or each pair of racks g<3>, g<4> may be continued to form one curved rack. On the side of the wheel m<1> is fixed a pinion or segment m<2>, which comes into gear with the curved racks as the wheel m<1> leaves the racks g<1>, g<2>. A pin m<4>, preferably fixed about half way between the centre and pitch line of the pinion m<2>, engages the groove g<7> formed between shoes g<8>, g<9> fixed on the hanger G. In a modification, the shoe g<9> is omitted and a circular bearer on the, side of the pinion m<2> bears on a track on the side of .each of the curved racks. The shaft M is journalled in an eccentric sleeve rocked by a cam to move the wheel m<1> alternately into gear with racks g', g<2>. The shaft M is driven by an arm thereon having a roller engaging a radial slot in a piece carried by a gearwheel which also drives the impression cylinder. The parts are so arranged that the shaft M and its driving-wheel are concentric during the printing part of the stroke of the bed, so that the bed and cylinder are driven with the same surface speed at this time.