Patent GB-164371-A (GB)
Title: Improvements in and relating to printing, marking, or embossing upon paper, cloth orthe like, delivered from rolls or reels
IPC: B41F19/00
Filed: 1920-06-12
Abstract: 164,371. Edwards, T. G. June 12,1920. Rotary machines; tripping-arrangements; ink. ing-apparatus; embossing.-An apparatus for printing, marking, or embossing paper or fabric as it is drawn from a reel, such as for supplying wrapping paper, comprises a reel of paper &c. and a roller printing-apparatus which is automatically put into operative contact with the paper while it is being drawn off. As shown in Fig. 1 a reel 1 of paper on a spindle 2 is mounted in slots 5 in standards 3, levers 6 being provided for raising the reel into position. A knife 8 against which the paper is torn off is pivoted on the standards and is normally pressed against the reel by a spring and may be held raised by a hook 10. A printing-roller 20 is journaled at 21 in frames 22 and the paper is pressed against it during the time the paper is drawn off by a roller 16 in arms 17 pivoted on standards 18, the tension of the paper assisted by a spring 19, lifting the roller 16. When the tension is released the roller 16 falls into the position shown in dotted lines. Bands of rubber 23 are preferably provided on the ends of the printing roller to ensure driving contact with the roller 16. Means such as a counter-weight 20a is provided to return the roller 20 to its starting point when released by the roller 16. A setting-appliance for enabling different lengths of paper to be drawn off, comprises a setting-plate 24 pivoted on the bush of the spindle 21 of the roller 20, formed with stepped teeth 32, 32<a>, 32<b>. A segmental rack 26 on the plate 24 engages a pinion 27 on one of the frames 22, and a star wheel 29 is fixed to the pinion and is engaged by a pin 30 on the roller 20. A stopping-lever 33 pivoted at 34 carries a detent or tooth 37 which is adapted to engage one of the teeth 32, 32a, 32b and control it so as to stop the roller 20 after one, two, or three revolutions. A setting-arm 43 carrying a stud 43a may be set in three positions by means of the spring catch 45 and notched slot 46. When the roller 16 is lifted by the tension of the paper, an arm 19<a> on one of the arms 17, lifts the rear arm of a lever 39<a>, the front arm of which has a detent 40 which engages and depresses a pin 35 on the stopping lever 33. This frees the plate 24 from the detent 37, and it is then moved by a spring 25 until the arm 31 engages the setting stud 43a. When the detent 40 slips off the pin 35, the lever 33 is released and rises until its tooth 37 engages one of the teeth 32, 32a, 32b according to the setting of the arm 43. As the roll 20 is rotated the pin 30 rotates the star wheel 29 one tooth at each revolution, and the plate 24 is thereby stepped back in a clockwise direction, permitting the detent 37 to fall off the teeth 32 &c. and to resume the position shown after one, two, or three revolutions. In this position a stop 38 on the lever 33 is in the path of a projection 39 on the end of the roller 20, and stops the roller after one, two, or three revolutions. When it is desired to draw off the paper continuously for any length, the arm 43 is moved to the left-hand position in which its stud 43a moves a lever 47 so that its nose 48 engages and holds the lever 33 depressed. In the modification shown in Fig. 6, a fixed knife 8<a> is used, and the paper from the reel 1 passes round a fixed impression roller 16, a fixed guide-roller 66, and a roller 68 in arms 67 pivoted at 64. When the paper is drawn off its tension moves the roller 68 and arms 67 into the position shown in full lines. A bar 73 is moved by a stud 72 on the arms 67 and its end engages a pin 73<a> on a pivoted frame 22. carrying printing roller 20, and rocks the frame on its pivots 75 into the position shown in full lines to bring the roller 20 against the paper passing round the roller 16. A handle 70 on a pivoted arm 69 has a gripping-device 71 to engage the paper on the roller 68 for feeding the paper forward sufficiently for grasping by the hand. The printing-roller is inked by a roller 49, Fig. 1,. mounted in arms 50 pivoted at 51, so that the roller may be raised by cam discs 54 to supply it with ink when required. Ink is fed from a reservoir 57 by a roller 58 having a recess or trough 58a which may be brought into register with the passages 59, and with the delivery passages 60. A series of projections between the passages 60 assists an even distribution of the ink on the roller 49 when it is raised and rotated: together with the roller 58.