Patent GB-937145-A (GB)
Title: Data registering and marking machine
IPC: B41K3/00
Filed: 1961-08-25
Abstract: 937,145. Typewriters &c. BURROUGHS CORPORATION. Aug. 25, 1961 [Aug. 25, 1960], No. 30792/61. Class 100 (4). [Also in Groups VIII and XVIII] In a data-registering machine wherein a number of circular or segmental members 16 are individually set to select the data to be registered and a cycle of operations of the machine is then carried out to effect the registering of the data either by marking on a sheet by printing or punching or merely by indicating visually the selected data, the machine is provided with devices which, during an operative cycle, effect in the following order: (a) registering of the data, (b) removal from the members 16 of detent means holding the members in set position, (c) restoration of the members 16 to their initial positions, and (d) restoration of the detent means to operative position in engagement with the members 16. Operation of the members 16 may select type or punches carried by the members themselves or may actuate wheels 81 or bars carrying the type &c. Moreover, the members 16 may be set directly by finger-pieces 21 as shown, or by means of a keyboard. Type-wheel machines; type selection; aligning for impression.-Each type-wheel 81 is geared to its member 16 which is free on a shaft 31 and is moved anticlockwise by a finger-piece 21 to position a required type face at the printing position. Each member 16 has teeth 37 engaged by a detent 41 pivoted at 47, and each typewheel has a detent 137 engaging its gear-wheel 86. Cyclic driving arrangements; platen impression arrangements.-A main shaft 51 which may be oscillated, electrically or as shown by a handle 58, between positions determined by the engagement of a pin 54 on the main frame 12 with a slot 53 in a gear 52 fixed to the shaft, carries a spring-retracted arm 62 which operates a linkage 64 . . . 68 connected to a toggle 69, 71, 73 to which is secured a platen 78 coacting with the typewheels 81. A ratchet device 61, 59 ensures that a full stroke of handle 58 occurs. Detent-release devices.-The gear 52 drives a small gear 112 freely rotatable on a stub shaft 113 and having fixed thereto a disc 114 with a single tooth 116, the gear ratio being such the disc makes approximately one and a half revolutions clockwise during the initial anticlockwise movement of the handle 58 and an equal anticlockwise movement during the return movement of the handle. A spring- pressed pawl 117 on a cam disc 111 free on the stub shaft 113 engages the tooth 116 in the initial position of the machine, and is arranged so that the disc 114 rides freely past the pawl during its clockwise movement but so that the tooth 116 engages the pawl and rotates the cam disc when the disc 114 is moving anticlockwise. A member 121 pivoted about the same axis 47 as the detents 41 has a cam follower 120 initially engaging a recess 161 in the disc 111, in which position transverse rods 124, 125 on the member 121 lie respectively above and below downward extensions 46 of the detents which are free to engage the teeth 37. After printing has been effected and the disc 114 has made about one-third of its return or anticlockwise movement, the tooth 116 engages the pawl 117 and rotates the cam disc 111 so that the follower 120 rides out of the recess 161. This causes movement of the member 121 so that the pin 124 engages the detent extensions 46 and rocks the detents out of engagement with the teeth. The discs 16 are now restored to their initial positions as described below, and when this has been effected, a deep recess 163 in the disc 111 causes sufficient movement of the member 121 for the pin 125 to engage the extensions and move the detents positively back into engagement with the teeth 37. The disc 111 continues its rotation until the initial position is again reached. The type-wheel detents 137 are also retracted during the restoring of the discs, by means such as are described in Specification 937,146. Typewheel restoring devices.-The members 16 are restored to their initial position by a bail 127 passing through slots 128 in the members and carried by a lever 129, 134, one arm of which has a pin 136 engaging an elongated slot in one end of a link 132 pivoted at its other end to the cam disc 111. During the first part of the anti-clockwise movement of the disc 111 when the detents 41 are lifted, the slot rides over the pin 136 and no movement of the bail 127 occurs. Subsequently the bail is moved downwardly to restore the members 16 and then moved upwardly back to its initial position, Fig. 2. Visual indicator.-Each member 16 is geared to a wheel 142 with markings thereon corresponding to the type faces on the type wheel and visible through an aperture in the machine cover to indicate the setting of the type wheels. Repeat printing.-If it is desired to print the same matter in consecutive cycles of the machine, the restoring means for the members 16 and typewheels 81 is rendered inoperative by rocking the pawl 117 out of engagement with the disc 114 by a member 168 attached to a hand lever 167.