Patent GB-189908634-A (GB)
Title: Improvements in Machines for Preparing Perforated Record or Control Strips.
Inventor: BOULT ALFRED JULIUS
Filed: 1899-04-25
Granted: 1900-04-14
Abstract: 8634. Boult, A. J., [Lanston Monotype Machine Co.]. April 25. Monotype machines; type, setting; type-writers and like machines.-Relates to apparatus for punching the record strips used to control machines for forming justified lines of separate type, such as the Lanston monotype machine, and is an improvement on the apparatus described in Specification No. 22,208, A.D. 1897. Fig. 1 shows a perspective view of the whole machine, and Fig. 4 a central vertical section looking towards the left, omitting some of the lower part. The mechanism for holding and feeding the paper consists of a removable spool supported on a shaft 6 from which the paper passes to a hollow die 7, where it is acted upon by the punches, and thence it passes to the receiving-roller 9. The shafts of the die and the receiving-roller are operated to feed the paper by a weight 19 suspended from the shaft of a pinion 18 gearing with two vertical racks 13, 17 which removably gear with the shafts of the die 7 and roller 9. The motion is controlled by an escapement-wheel 20 having stiff and limber pawls 21 permitting the feed of the paper one tooth at a time, when any one of the key levers is operated, and holding the paper stationary at other times. The pawls are operated from a feed rocking shaft 30, which also operates other parts of the mechanism. The punching-mechanism consists of a set of thirty-one punches 35, carried by upper punch bars 36. The keyboard is arranged in vertical columns and horizontal rows. Each column operates characters of the same thickness, and each row operates characters which vary in thickness. When a key is depressed, it operates two mechanisms, one to move a punch, called a units punch, indicating the column, the other a punch, called a character punch, for indicating the proper character in that column. Each units punch bar is operated by a lower units bar 41 joined to an upper units bar 40 having a lug 42 which engages with a bail 38 on the particular units punch operating rock shaft 37, the punch bar being also connected to the bail 38. Each character-selecting punch bar is operated by lugs engaging bails 46 on the lower rock shafts 44 which are operated by the key levers. The keyboard or finger mechanism consists of levers 52, corresponding in number to the number of finger pieces 4 and the number of characters, including justification keys, space keys, and quads, designed to be represented by the several combinations of punches and to be reproduced by the casting or typeforming machine. Each key operates both a units punch and a character punch, that is, all the key levers in one vertical column will operate a single one of the lower units bars 41, and all the key levers in a horizontal row will operate a single lower rack bar 44. The space key 61 and the period key 62 are in the bottom row, and through these keys the justification is effected, by the variation in the body widths of these types and these only, special connections between these key levers and the punches being provided. For indicating exactly which justification keys are to be struck for producing indications of the amount of body thickness set-ways which is to be added to each of the justifying type bodies in any given line, a chart 75 is provided having a justification indicator 132 carried by a justification arm 119. This arm is driven by a weight 87 which operates a horizontal rack bar 82 by suitable gearing, from which motion is carried to a units wheel 76, mounted on the same shaft as the justification arm. The motion of this units wheel is governed from each of the vertical columns of key levers. The line indicator consists of a scale 148 along a slot. Through the slot passes a pointer 149 attached to the main rack 82. A bell is struck when the line is approximately full, the striker thereof being operated by an arm projecting from the same rack. The rack bar is returned to its original position after a line has been completed, by mechanism connected to the hand-operated spring lever 157. From the same lever, the racks 13 and 17 and weight pinion 18 are raised. The justification indicator is re-set when the justification keys are struck, and also, in case these are not used, by connections from the lever 157.