Patent GB-189918638-A (GB)
Title: Improvements in or relating to the Preparation of Record Strips for Type Forming and Setting Machines.
Inventor: BOULT ALFRED JULIUS
Filed: 1899-09-15
Granted: 1900-10-15
Abstract: 18,638. Boult, A. J., [Lanston Monotype Co.]. Sept. 15. Monotype machines.-Relates to apparatus for preparing perforated record strips for type casting and setting machines and the like operating as described in Specification No. 22,208, A.D. 1897. Fig. 1 shows a perspective view of the machine, and Fig. 7 a vertical longitudinal section. The paper strip, having rows of feed-perforations near its edges, is fed from a roll 4 round a curved die 12 to a winding-reel 6 driven by gearing and an adjustable friction clutch from the shaft 14. On the shaft 14 at the ends of the die 12 are pin-wheels which engage the feed-perforations in the strip and feed the latter after each punching operation. The shaft 14 has a ratchetwheel 18 engaged by a feedpawl 19 on an arm or lever 20 connected by a rod 21 to a piston of an air cylinder actuated each time the punches make their downward or return movement. Return movement of the shaft 14 is prevented by a detent 24, and over-motion is prevented by a pawl 27 which is put into engagement with a reverselytoothed ratchet - wheel by the lever 20 at the end of its movement. The punches 226 are guided by a row of perforations in the bar 13 and, when operated, pass up into perforations in the die 12. The punches are connected to bars 227, the lower ends of which are pivoted in recesses in the operating- levers 29 pivoted near the front of the machine. These levers 29 are operated by rods connected to pistons 31 in a series of cylinders formed in the piece 32 and controlled from the keys 48 of the keyboard. The free ends of the levers 29 are guided by guides 35. Over the levers 29 is a frame 37 pivoted at 38 and pressed by a spring and rod 40 so as to return the levers &c. The frame 37 operates a valve which controls the operation of the cylinder and piston by which the paper feed - rod 21 is operated. The keys 48 are upon the upper ends of depressible valve stems 53, arranged in transverse and longitudinal rows or columns corresponding to the rows or columns of characters in the matrix case of the casting-machine. The transverse rows of keys also correspond to the rows of matrices. The longitudinal rows of key stems 53 are preferably arranged in separate bars 51 clamped side by side by means of transverse bolts. Beneath the bars 51 forming the keyboard is an air pressure chamber 49 to which air under pressure is supplied by a suitable pump &c. The valve stems are slotted at their lower ends, and engage transverse rods which prevent them from turning in their sockets. The valve stems 53 of the keys are provided with passages, which, when any key is depressed, open communication from the chamber 49 with a longitudinal passage and a transverse passage in the bars 51. There is a passage for each longitudinal and transverse row of keys, and each of these passages is connected by a pipe 61 to one of the cylinders by which the levers 29 are operated. As the matrix case requires no movement for the first column or first row of characters the punches corresponding to the right-hand longitudinal row or column of keys and also the first transverse row are omitted, and the levers 29 corresponding to these rows serve to operate the indicating &c. mechanisms. The two upper rows of keys are arranged to make justifying-perforations which operate in the casting machine to vary the width of the justifying &c. types or spaces to justify the line, and a chart or indicator 100 marked to correspond with the justifying-keys is moved to indicate exactly the particular keys to be depressed. The chart or indicator is in the form of a cylinder, and is rotated into a position according to the space occupied by the types &c. in the unjustified line, and a pointer 114 is moved up according to the number of spaces in the line, and indicates thereon the justifying keys to be depressed. The indicator 100 is detachably mounted on a disc 99 on a shaft 98 moved by bevel gears 96, 97 from a shaft 93. The shaft 93 is moved by a pinion 94 thereon, and a short rack which comes into gear towards the end of each line. The short rack is carried by a rack 67, which is propelled by a piston in a cylinder 69 and moves a units wheel 64 through a distance corresponding to the width of the character or of a normal space at each operation of a key. When the short rack operating the shaft 93 comes into gear an additional motor rack 109 and piston are put into operation. The rack 109 gears with the wheel 94. The rack 67 gears with a pinion 66 on the shaft 65 of the wheel 64. The wheel 64 is normally engaged by a pawl 74 pressed by a spring 75, and when a key is depressed the pawl 74 is moved out of engagement and a rack 77 moved into engagement with the wheel 64. The rack 77 and pawl 74 are lifted by a pivoted frame 78 having a spring connection operated by projections on a series of stops 84 by which the movement of the rack 77 is arrested. These stops are arranged in position according to the width of the characters, and one is provided for each longitudinal row of keys and one for the space key. The stops are each operated by a link 85 pivoted at its lower end in a recess in one of the levers 29. A projection 83 on the frame 78 engages a slot in a rod 76 by which the pawl 74 is lifted. The movement of the frame 78 is limited by stop screws 79 and 80. The pointer 115 is carried by a vertically-sliding rod 114 moved up one step at each operation of the space key by two pawls 117 engaging ratchet teeth on the rod. One of the pawls is carried by a lever 119 connected to the lever 29 of the space key. A line indicator for showing the length of the line comprises a scale marked on a bar 121 and a pointer 124 on a rack 122 operated by a pinion 123 on the shaft 65 of the units wheel. The rack 122 slides in a groove in the bar 121, and the extent of its return movement is limited by an adjustable stop 125. An alarm belt is also sounded near the end of the line. The parts are re-set or returned to normal position at the end of each line. The motor rack 67 is returned by a piston in a cylinder 72, the motor cylinder 69 and its piston being thrown out of operation. The cylinders 69 and 72 are connected by pipes 70, 73 to the air-pressure chamber under the keyboard. Valves for exhausting the cylinder 69 and admitting compressed air to the cylinder 72 are operated by a shaft 128 having an arm connected to the piston of a cylinder controlled by a re-setting key 134 on the keyboard. A throttle valve is introduced into the duct 73 to prevent too rapid admission of air to the cylinder 72, the parts being thus prevented from returning with too much momentum. The units wheel is released from the dog 74 by a projection 144 on the shaft 128, engaging a projection on the lower end of the rod 76. A projection 146 on the shaft 128 also disengages the pawls 117, to permit the pointer 114 to drop to its initial position. The pointer rod 115 may have a weight 147 on its lower end. Different charts or indicators 100 are used for the different fonts of type.