Patent GB-190226128-A (GB)
Title: Improvements in Register Gear for Web Printing Machines.
Inventor: COSSAR THOMAS
Filed: 1902-11-27
Granted: 1903-01-29
Abstract: 26,128. Cossar, T. Nov. 27. Feeding - apparatus for webs; cylinder machines with plane printing - surfaces; rotary machines associating- apparatus.-Relates to means for registering webs when they are being printed a second time, or when two webs are being led to the folding - mechanism. Figs. 1 and 3 show the means for varying the speed of the feed of the web when desired. The web is fed by rollers, one of which E is geared by bevel-wheels G<5> to a shaft G<4> driven by change gear R, R<1>, R<2> from a shaft R<3>, driven by gearing q<2>, q<1>, &c. from a shaft of the printing- machine. The wheel R' is fixed on the hub of a wheel r<6> loose on the shaft R<3>, and this wheel r<6> gears with pinions r<1> journalled in a casing R<6> rotatable on the shaft R3. The pinions r<1> gear with pinions r<x>, also journalled in the casing R<6>, and these pinions r<x> also gear with a wheel r<2> fixed on the shaft R<3>. Rotation of the casing R<6>, in one or other direction, will accelerate or retard the motion of the feedroller E and speed of the web, during the time of such rotation of the casing. On the casing is a ring of worm teeth r<4> gearing with a worm on a shaft R<5> having hand-wheels r<5> for turning it. The shaft R<5> may be operated automatically, when perfecting a web, by mechanism shown in Figs. 4 and 6. The shaft R<5> is geared by bevel-wheels P to a shaft V<20>, also geared by bevel-wheels to a shaft V<5>. Reciprocating on a bar S<1> parallel to the web w is a block S operated by a rod connected adjustably to a lever S<3> operated by a cam s<2> on a shaft V<9> driven from the printing-machine. The block S has a slot which embraces the edge of the web w. In the block are a vertically-movable punch S<6> and two sets of vertically-movable fingers U, U<1>. When printing the web a first time, the punch is operative, and the fingers are held from operation by catches S<7>. The punch S<6> is moved down, to punch the web, when the block is moving with the web and at the same speed, by a bar T<2> engaging rollers T<4> on the punch. The ends of the bar T<2> are pivoted to levers T<3>, T<1>, the latter operated by a cam T. When perfecting the web, the fingers U, U<1> are rendered operative, and the punch is held inoperative by the catch S<7>. On the fingers U are lateral projections U<2> engaging a bar U<4>, and on the fingers U<1> similar projections U<3> engaging a bar U<5>. The bar U<4> is pivoted to levers U<15>, U<8>, the latter operated by a cam U<6>, and the bar U<5> is pivoted to the levers U<16>, U<9>, the latter operated by a cam U'. The bars U<4>, U<5> are operated alternately to lower the fingers U, U<1> alternately on to the web as the block S moves forwards with it. On the fingers U, U<1> are also lateral projections U<13>, U<14>, which, when any finger passes through a perforation previously made in the web by the punch S<6>, engage a projection V on a lever V<1> on a shaft V<2>. On the shaft V<2> is also a piece V<3> having a flange concentric with the shaft V<5>. Loose on the shaft VS is an arm V<7> rocked by a rod V<10> and crank-arm V<8>. On the arms V<7> are two pawls V<11>, V<12> adapted to engage a toothed wheel V<14>, on the shaft V<5>, in the opposite directions of movement of the arm V<7>. When a finger U or U<1> operates the arm V<1>, the piece V<3> is rocked to permit the pawls to engage, the shaft V<5> being turned to retard or accelerate the speed of the web, according to the direction in which the arm V<7> is moving. One set of fingers U, U<1> operate to retard and the other to accelerate the feed of the web. A box may be provided on the block S, to catch the pieces punched out by the punch S<8>.