Patent GB-562278-A (GB)
Title: Improvements in or relating to key-controlled printing and perforating mechanism
Filed: 1942-12-21
Abstract: 562,278. Typewriters. BRITISH TABULATING MACHINE CO., Ltd. Dec. 21, 1942, No. 18157. Convention date, Dec. 23, 1941. [Class 100 (iv)] [Also in Group VIII] A power-driven typewriter with a sheet moved by a carriage and a power-driven punch with a card moved by a carriage are controlled from an auxiliary keyboard, means being provided to effect these two operations together or separately. The punch may be actuated from a master card while the typewriter is alone connected to the key controls, and may be of the type described in Specification 362,529, [Group VIII]. The advance of the card carriage may cause the typing of certain symbols, e.g. a comma, or the operation of certain circuit switches. The typewriter, Fig. 2, has keys 10 and spacebar SP releasing latches 11 from cams 12 which are then spring-pressed against a motor-driven roller 14 and thus rotated, causing its carrier 15 to rock and depress links 16, 16<1>. The key links actuate the type-bars 18, universal bar 22 and escapement lever 23, the lever being directly actuated by the space-bar link. The carriage also has a slotted rack 31 with marginal tabulating stops 32 which have differing switchoperating projections such as 32a and are set manually. The keys 10 and functional levers may be actuated by solenoids 30 energized from an auxiliary keyboard which is also connected to a distant punch and they may also themselves actuate contacts in the punch-control circuits. The auxiliary keyboard consists of ten digit keys and certain functional keys, these keys being connected to the solenoids 30 and actuating contacts in the punch-control circuits. The card punch, Fig. 5, of the type shown in Specification 362,529, has punches 55 with. selectors 60 operated through levers 59 and rods 58 by the armatures 57 of solenoids 45 in circuits which include the typewriter and auxiliary key contacts, the typewriter alphabet keys causing a closure of one or contacts to form a code. The cards are fed by pushers 54 on an escapement-rack 56, allowed to advance by a bail 70 actuated by selector bars 60. The selectors also rock a bail 62 which through link 64 closes contacts 65 in the circuit of a solenoid 66 whose armature 67 through links 52 depresses the punch bar 61 to actuate the selected punch. The links 52 close contacts 65a after the card has been punched, to effect typewriter tabulation when necessary, and also moves link 64 to open contacts 65 so as to de-energize solenoid 66. The card carriage has a contact brush 72 engaging a contact strip 73 and advancing along contact points 74 individually connected to the sockets of a plug-board. In the last column position of the carriage, a card eject-control magnet is energized, and as the card is ejected it closes the contacts of a solenoid 79 whose armature 80 will complete the circuit of motor 157 to return the carriage to its initial position and feed a blank card. The operations of typing and punching are accommodated to various styles of forms and cards by means of a pre-set plug-board. The plug-board, Fig. 9, has a series of sockets 75, one to each card column, connected to the contact points 74 of the punch. These sockets are connected by plug cords with either one of a series of single-operation sockets 143 or one of a series of multiple-operation sockets 130. The latter series are connected to sockets 132 for the operations which are represented by sets of sockets 83, 106, 116. The operations include start or stop printing or punching, zero elimination and comma or dash inserting for typing, among others. A master card may be used to control the punch whilst the keyboard is being used to effect the printing of some details not required on the card. The typewriter and punch may be operated independently by using a threeposition switch.