Patent GB-363633-A (GB)
Abstract: 363,633. Printing yarns, threads, &c. BONNER, D. B., 5223, North 16th Street, Philadelphia, U.S.A. Sept. 17, 1930, No. 27792. Convention date, Sept. 18, 1929. [Class 100 (ii).] A thread-printing machine comprises two driving- mechanisms arranged to be actuated in accordance with the setting of a selector-mechanism to impart to a thread-carrying drum movements of different amplitudes, the selector-mechanism also controlling the actuation of a device for printing colour on the thread. A drum A, Figs. 1, 2, and 4, around which the thread is wound in a single layer, is provided with an internal gear 29 and a ratchet wheel 32 having a number of evenly spaced teeth 33 and is mounted on a shaft 27. When it is desired to wind a layer of thread on the drum A the driving-mechan. ism for the drum A comprises a shaft 21, Fig. 1, which may be driven by a fast-and-loose pulley and belt arrangement 22, bevel gearing 23 for transmitting drive from the shaft 21 to the shaft 24 carrying a pinion 25, and a gear 26 on the drum shaft 27 meshing with the pinion 25 ; during this operation all other driving-mechanism is declutched. Driving-mechanism for rotating the drum A in uniform steps comprises a ratchet pawl 34, Fig. 2, adapted to engage ratchet teeth 33 to move the drum A a distance equal to one pitch of the teeth, operated from a cam 35 through a cam roller 38 on a spring-retained lever 36 pivoted at 37, and connected to an arm 39 by means of an adjustable link 40, the arm 39 which is pivoted at 41 having connected thereto a second arm 42 on which the pawl 34 is pivoted. The cam 35 is driven from a shaft 45, Fig. 4, having a clutch-driven pinion 46 thereon meshing with a gear 47 secured to the cam shaft 35a. The shaft 45 may be driven by a belt- and-pulley arrangement 48. A printing-carriage B travels backward and forward on rails 49 in the axial direction of the drum A and its printing-roller 20 prints transverse strips of colour on the threads. The carriage B is secured at each end to a cable 61 passing over a drum 60 and a pulley 64, and the drum 60 is oscillated by an oscillating gear-sector 57 engaging with a pinion 58 secured on a shaft 59 of the drum 60. The carriage B comprises a frame structure 50 adapted to support a removable colour trough 51 containing the printing-roller 20 which is held in open-top spring-pressed bearings, and is rotated by means of a stationary cable 66 which passes around a pulley 67. The gear-sector 57 is oscillated by means of a connecting-rod 57b and a crank 57a carried by the cam shaft 35a. As the cam 35 rotates the printing-carriage B with its printing-roller 20 traverses the face of the drum A and after each travel the latter is notched'round a distance equal to one pitch of the teeth 33. An endless chain G, forming part of the selector-mechanism, passes over guiding sprocket wheels 68, 68a, and a driving sprocket wheel 68b and is guided by guides 69, 69a, 69b. The sprocket wheel 68b is driven from a shaft 30 by sprocket wheels 71, 72, and chain 73. The shaft 30 carries a pinion 28 which can be brought into and out of mesh with the internal gear wheel 29 on the drum A, so that the chain G moves when the drum A rotates. The chain G is provided with selector-plates 74 of the same number and marked to correspond with the teeth 33 on the ratchet ring 32. These plates are slidable in slotted blocks carried by the chain G, and springs may be employed to engage them in their selected positions. The selector-plates 74 are projected or otherwise by the operator according to the particular design required on the yarn or thread. As the chain G moves, the projecting portions of the plates 74 engage the hooked-end 79 of a lever 80, Fig. 4, which rocks on its pivot 81 pulling down the link 82. The link 82 is connected to a lever 83 which is pivoted at 84 and has an arcuate rack 85 at its free end engaging with teeth 86 on a lever 87 which is pivoted at 88. The toothed lever 87 is connected with another lever 89 by means of a link 90, and the lever 99 is pivoted at 91 on a plate 92 which is secured to a lever 93 by means of a bolt 94. A rod 95 carrying a block 96 and guided for up-and-down movement by a member 98 is connected to the lever 89 at 97. The lever 93 is secured at 99, Fig. 7, to the rock-shaft 100 of a clutchoperating member 101 provided with pins engaging in an annular groove in a movable toothed clutch member 105. The downward movement of the link 82 causes the downward movement of the levers 87, 90, 89, and the rod 95 carrying the block 96. When the block 96 is in its down position cams 106a carried by the cam-shaft gear 47 will clear the block as the gear rotates and thus permit the lever 93 to assume a position in which the clutch member 105 is engaged with the clutch member 106 on the pinion 46, so that drive will be effected to the gear 47 and the cam 35. Skipping-mechanism E, which drives the shaft 30 and the gear wheel 28, is adapted to be thrown out of operation during the time that the clutch members 105, 106 are in engagement. The driving-shaft 107 of the skipping-mechanism is provided with a clutch member 108 adapted to move into and out of engagement with a clutch member 109 carried by a pinion 110 meshing with a gear wheel 111. The clutch member 108 is adapted to be thrown out of engagement with the clutch member 109 when the clutch device 105, 106 is thrown into engagement, through levers 114, 115, 112, 113, the latter being connected to the lever 93. The lever 114 is secured at 116 to the rock shaft 117 of a member 118 engaging with the movable clutch member 108. The shaft 30 of t h e pinion 28 is driven by means of two sets of bevel gearing 120, 122 and 123, 125, and a sprocket wheel 126, which is secured to the shaft of the bevel gear 125 and connected by a chain 129 to a sprocket wheel 127 secured to the shaft of the gear wheel 111 ; the clutch device 108, 109 is disengaged during stepby-step movement of the drum A so that the above gearing is idle. When a projecting portion of a selector-plate 74 on the chain G has passed the hooked lever 8.0, the block 96 is caused to move upwardly under spring action and thus lies in the path of the cams 106a which strike it to disengage the clutch member 105, and, at the same time to cause the clutch member 108 of the skipping-mechanism to be engaged. Stops are provided on the cams 106a to be engaged by the block to arrest the wheel 47. The stopping of the wheel 47 stops the carriage B, and the step-by-step movement of the drum A is now converted into a quick rotation by means of the gear 28 of the skipping-mechanism E. The shaft 107 is driven by means of a belt-andpulley 133 and a clutch-connection which may be disengaged automatically when all the prints for one revolution of the drum have been completed, by means of a pin 138, Fig. 1, carried by the gear 26, adapted to engage a lug 139 on a flexible arm 140 connected to the clutch member. A hand-operated ratchet wheel 141 may be provided on the shaft 30 for the purpose of rotating the drum A by hand for setting operations. A spring-pressed bar may be located in the path of the selector-plates 74 at a point beyond the lever 80 to return them into retracted position.