Patent GB-168640-A (GB)
Title: An improved typewriter for writing upon checks and the like
IPC: B41J3/00
Filed: 1920-05-26
Abstract: 168,640. Wendelken, C. May 26, 1920. Type-wheel machines with two sets of type.- A machine for filling in cheques comprises two type-wheels 64, 65 carried bv a shaft 66 and set from a keyboard 3, the payee's name and the amount in numerals being printed on one line of the cheque by means of the type-wheel 64, and the cheque being then shifted longitudinally and laterally and the amount printed in words on the next line by means of the type-wheel 65. The shaft 66 is geared to a shaft 16 which is rocked differentially for character-selection in the following manner. Levers 56, Fig. 1, operated by the printing-keys 57 are connected by links 41 to levers 36, which are mounted loosely on the shaft 16 and are provided with screws 38 for engaging, after graded lost-motion, a bail 35 on the shaft 16. The depression of the levers 36 is limited by a stop-bar 42, yielding connections 60 permitting further depression of the keys. An indicating- dial 70, bearing words and numerals that are visible through an opening in the casing wall 4, is secured to a shaft 69 geared to the shaft 66. A coiled spring 76, Fig. 2, for returning the typewheels is connected to the shaft 66. Aligning for impression.-An aligning-dog 110 is mounted loosely on a shaft 111 and is normally held in the disengaged position by a finger on the shaft. On operation of the impression mechanism, described below, a bar 46 rocks the shaft, and a spring moves the dog into engagement with teeth 114 on the type-wheel 64. Hammer-impression arrangements. -The machine is provided with two separately-operated hammers 85 for taking impressions from the typewheels 64, 65 respectively. The hammers are pivoted to levers 80, 81 and are connected by links 86 to bell-cranks 87 which are pivoted to the levers. The two bell-cranks are connected bv links 91 to a common lever 92 which is suspended from the arm 46 of a rocking frame 48 provided with a universal bar 44 in the path of screws 58 on the key-levers 56. The levers 81 pass through slots 90 in the casing and abut alternatively on the arms 100 of a sliding frame 101 which is mounted in lugs 99 on the casing and is connected by linkage 103, 102, 105 to a key 106 for shifting or line-spacing the cheque. Normally the left-hand arm 100 abuts on the lever 80, 81, and on operating the printing-keys, the right-hand hammer is raised for impression. When the cheque is to receive impression from the typewheel 65, the key 106 is depressed, the righthand arm 100 is caused to abut on the lever 80, and the left-hand hammer is operated by the printing-keys. Paper-carriages; sheet-feeding and guiding arrangements. - The cheque receives letterspacing movement past the type-wheels 64, 65 by means of two pairs of feed-rollers 125, 129, Figs. 2 and 4, each pair being mounted in a carriage 122 movable laterally for line-spacing on shafts 120, 121. The feed-rollers 125 are secured to sleeves feathered on the shafts 121, and the feed-rollers 129 are mounted in spring-pressed arms 128 secured to sleeves feathered on the shafts 120. The feed-rollers 129 can be released by depressing a key 135 connected by a link 132 to arms 131 on the shafts 120. The bottom edge of the cheque is placed in contact with a gaugestrip 159 which projects above the supporting- table 11 for the cheque and is adjustable laterally by turning a knob 170 on a shaft 166 which is geared to transverse racks on the gauge. The first line of the cheque is set by the gauge-strip 159 in register with a stationary pointer 158 arranged vertically beneath the type-wheel shaft 66. The table 11 is provided with marks 171, 172, Fig. 2, for indicating when the cheque is in position to receive the first impression from the type-wheels 64, 65 respectively. Letter-spacing mechanism.-The cheque receives uniform feed while being printed upon by the type-wheel 64, and variable feed, in accordance with the length of the words, while being printed upon by the type-wheel 65, by means of the following mechanism. The shafts 121 are provided with ratchet-wheels 137, Fig. 2, engaging pawls 138 on rocking arms 139 connected by linkage 140, 141 to an arm 30, Fig. 1, on a frame 18 mounted on blocks 20 rocking on the shaft 16. The frame can be moved laterally on the blocks by means of gears 25 connected by a link 28 to the lever 105 operated by the line-spacing key 106. The block is retained in the set position by spring detents 33. Normallv, a cross-bar 17 of the frame 18 is in the path of the ends 39 of the action levers 36, and at each operation of the printing-keys a uniform retractive movement is imparted by the frame to the pawls 138; on releasing the keys, a spring 140<a> operates the pawls, and a uniform feed is imparted to the cheque. When the cheque is in the field of the type-wheel 65, the key 106 is depressed, and the frame 18 is thereby moved laterally to bring the cross-bar 17 into the path of fingers 40 on the levers 36. The fingers are of graded lengths and engage the cross-bar after graded lost motion, the arrangement causing a variable feed to be imparted to the cheque. Space-key actions. - A space-bar 49, Figs. 1 and 2, is carried by levers 51 connected by a link 53 to a lever 36<1> for operating the abovedescribed frame 18. Key interlocks.-The frame 48, Fig. 1, is provided with a bar 45 which, on operation of any printing-key 57, engages the levers 36 associated with the remaining printing-keys and prevents operation of those keys. Line-spacing mechanism.-The carriages 122, Figs. 2 and 4, are provided with links 147 which abut on eccentric discs 145 and are connected by links 150 to bell-cranks 151 in the path of rollers 154 on the frame 101. On depressing the linespacing key 106, the frame 101 is shifted by the linkage 102, 103, 105, and the carriages are shifted laterally to cause the type-wheel 65 to print on the second line of the cheque. On releasing the line-spacing key, the carriages are returned to the normal position by springs 155. The spacing movement is adjusted by turning a knob 143 on the disc-shaft 142. The knob is provided with a spring catch 144. When the first line of the cheque registers with the stationary pointer 158, the knob is turned until a pointer 157, carried by an arm 156 on the shaft 142, registers with the second line, the line-spacing mechanism being thereby adjusted to impart a movement equal to the distance between the lines.