Patent GB-189704176-A (GB)
Title: Improvements in and relating to Printing Presses.
Inventor: HARRIS CHARLES GRANT
Filed: 1897-02-16
Granted: 1897-07-31
Abstract: 4176. Harris, C. G., and McNutt, J. F. Feb. 16. Rotary machines.-A rotary machine for card, envelope, and other printing is shown in vertical longitudinal section in Fig. 4. The upper part of the framing A is pivoted by means of rods 3 to the lower part of the framing, to which it is secured by bolts 5. The inking-apparatus is mounted upon the upper part of the framing. An impression cylinder a<1> is mounted within eccentric blocks, which can be adjusted, so as to raise or lower the cylinder, by means of arms b<7>, rods b<8>, and nuts b<9> ; the rods b<8> pass through a sleeve b<10>. The lower ends of the sleeves b<10> have extensions pivoted to arms secured to a shaft C, which is surrounded by a coiled spring ; when an interruption in the feeding of the cards takes place, the spring is so arranged as to rotate the shaft C and effect the lowering of the impression cylinder a<1>. The shaft C is held in its normal position by means of an arm d<2>, which engages with a notch in a tripblock d<3> pivoted to a lug d<6> on the framing A. When the cards are not properly fed, the tripblock d<3> is thrown out of engagement with the arms d<2> by a special arrangement of levers which are arrested by contact with a card or envelope in the ordinary working of the machine. The main shaft is driven by a clutch polley of any preferred form ; the clutch mechanism is connected to a shaft surrounded by a spring, whose tendency is to rotate the shaft and throw the clutch out of engagement with the shaft ; this spring is allowed to rotate its shaft, when an interruption occurs in the feed, by an arrangement of arms actuated by the shaft C. The blanket w of the cylinder a<1> is secured by means of clamping-plates which bear against the inclined sides of a longitudinal groove f. The stops are secured adjustably to one edge of a plate which covers the groove f, and are normally held against the cylinder a<1> by a spring on a longitudinal shaft F ; this shaft is rocked automatically to permit the cards or envelopes to be released from the stops when near the point of discharge. The discharge of the card is effected by wedge-shaped blocks G, mounted adjustably upon a shaft g, and these blocks also guide the cards &c. as they pass from the machine. A feeding-mechanism of any preferred form feeds the cards or envelopes singly from the bottom of a pile laid upon the table H. The feeding-mechanism shown comprises a reciprocating bar h connected by a rod h<3> to a plate h<5>, which carries adjustable plates adapted to push the cards or envelopes from a pile held in position by adjustable rods h<19>; the mechanism may be actuated by an arm i' carried by a rocking shaft i<3>. The passage of the cards &c. to the machine is controlled by a metal tongue j carried by the lower end of a vertically-adjustable bar i<9>, which can slide upon a post under the action of a wheel i<13>, mounted upon a screw i<15>, and projecting into a horizontal slot in the bar i<9>. Feed-shafts K, K<1>, driven by gearing with the tapes T, feed the cards &c. against the stops at a higher velocity than the peripheral speed of the cylinder a. A circular receptacle N, rotated intermittently by a pawl, receives the printed cards &c. ; the properly printed cards &c. are directed into an outer annular compartment n<13>, and the improperly printed ones are directed into a central compartment n<14> by tapering arms o mounted upon supports o' and actuated by a rod connected to the shaft C. The printing-cylinder a is formed with a longitudinal groove a<2> to receive clamps for holding the type-plates a<3>. The clamps a<6> are secured adjustably within grooves, of which one set runs circumferentially, and the other longitudinally. Ink is supplied from an ink trough R by a ductor roller r<2>, vibrator S, inking-cylinder P, and rollers p. The bottom of the trough R is fitted with an adjustable plate r. The roller S is mounted upon arms carried by a rocking shaft S<3>, which is actuated by spring-controlled mechanism operated by a shoulder projecting from a collar on the shaft of the roller r'. The cylinder P is moved longitudinally to distribute the ink uniformly upon the rollers p.