Patent GB-190727275-A (GB)
Title: Improvements in Typewriting Machines.
Inventor: FELL JOHN CORRY
Filed: 1907-12-10
Granted: 1908-06-04
Abstract: 27,275. Fell, J. C., [Monarch Typewriter Co.]. Dec. 10. Typewriters. - Relates to inking - ribbon vibrating-mechanism and particularly to multi-colour or like arrangements. The machine shown in crosssection in Fig. 1 and in partial detail in Figs. 5, 6, and 9 is of the " Monarch " class, and comprises the usual action and ribbonfeeding and escapement mechanisms operated by a universal bar 35, which is connected by end-plates and an arm 32 to a rockshaft 33. The ribbon 44, having stripes a, b of different characteristics, is threaded through the vibrator 58 mounted in guides 59 and formed with a fork 62 having a pin 63 which engages a slot 64 in a lever 65. A pin 66 on the lever is pivoted in the sides 67 of U-shaped member having a top 69 which is secured to the frame by a screw 70. A link 76 connected to the universal bar is formed with a flat top 76, to which are secured angled arms 81, 82. The link 65 is provided with studs 72, 73, which are at the same distance from the pivot 66 and are preferably formed by a single pin driven through the lever. The arms 81, 82 are formed respectively with a vertical slot 83 and a hole 84, so that by shifting the link 75 it may be given either a lost motion or a close connexion with the lever 65. A flat 74 on the lever 65 may contact with either of two stopping-parts 107, 108 on a member 98 having a side 106 which rests on a shaft 54 forming part of the ribbon feeding-mechanism. The plate 99 of the member 98 is formed with a slot 100 which serves as a guide for the flat top 76 of the link 75. A slot 101 is provided through which the cylindrical part of the link 75 may be introduced, the link being then dropped. A rod 111 secured to the side 106 may slide in lugs 55, 113, the travel of the rod being limited by stops 114, 115. A pin 117 on the rod is engaged by the forked end of a lever 118, pivoted at 120 to the frame and at 121 to a link 122, which is pivoted at 125 to a lever 126 pivoted at 127 to the frame. Springs 123, 129, secured to the levers and formed with apertures which take over the pivots 121, 125, serve to maintain the link 122 in engagement. The arm 131 of the lever 126 is of a spring nature, and is formed with a tooth 133 which may engage notches 136, 137, 138 cut in the front plate 134. The link 75 is formed with a part 85 which is mounted on a pin 87 carried by a lever 88 pivoted at 89 to the arm 32. A spring clip 90 guards the end of the pin 87 when permitting a slight shifting of the link 75. A pin 97 on the arm 32 is normally maintained against the top of a slot 96, formed in the lever 88, by means of a spring 95 which surrounds pins 93, 94, formed respectively on the lever 88 and the universal bar 35. When it is desired to print with the stripe a of the ribbon, the arm 131 is lifted and the tooth 133 lodged in the notch 138, thereby moving the member 98 into the position shown in Figs. 5, 6, and 9 and bringing the slot 83 in the arm 81 into operative connexion with the stud 72. When the keys are operated the link 75 is depressed, but the motion is not transmitted to the lever 65 until the top of the slot 83 engages the pin 72, whereupon the lever 65 is rocked until the flat 74 engages the stopping-part 107. The stripe b is employed by lodging the tooth 133 in the notch 136, in which position the stud 73 is engaged closely by the hole 84 and the flat 74 is arrested by the stopping-part 108. For mimeograph or like work, the tooth 133 is lodged in the notch 137, in which position the studs 72, 73 engage neither of the arms 81, 82 and the ribbon is held inoperative. The parts are so proportioned that when the positive stop occurs by contact of the flat 74 with the parts 107 or 108, the ribbon will be in position for printing. To prevent strain owing to the positive stopping of the lever 65 and to the unequal depression of the key-lever, the pin-and-slot connexion 96, 97 is provided whereby when the lever 65 and the link 75 are arrested, the universal bar 35 may travel a further distance equal to the length of the slot 96. The parts are returned to normal position by a spring 40, and an adjustable stop is provided for limiting the downward movement of the vibrator.