Typewriter comprising improved keyboard and associated printing means

• US 3,215,246 A
• Filed: 12/10/1962
• Issued: 11/02/1965
• Est. Priority Date: 12/12/1961
• Status: Expired due to Term

• Current Assignee: Nino Zanaboni
• Original Assignee: Nino Zanaboni
• Inventors: NINO ZANABONI
• Application Number:
  US04/243,441
• Time in Patent Office: 1,058 Days
• US Class Current: 400/102
• CPC Class Codes: B41J 5/10 Arrangements of keyboards , e.g. key button disposition
• CPC Class Codes: H01H 2217/028 on planes with different or alterable inclination, e.g. convex plane

Claims

1. A TYPE-WRITING MACHINE COMPRISING A MOVABLE SYMBOL HOLDER MEANS COMPRISING A DISC WITH A PLURALITY OF SYMBOLS ON IT FOR PRINTING AN INDIVIDUAL SYMBOL ON A PAPER, STOPPING MEANS FOR STOPPING THE SYMBOL ON THE HOLDER MEANS TO BE PRINTED ON THE PAPER AT A PREDETERMINED POSITION, SELECTOR COMPONENT MEANS FOR SELECTING THE SYMBOL TO BE PRINTED, AND KEY MEANS COMPRISING A PLURALITY OF FINGER KEYS FOR OPERATING SAID SELECTOR MEANS TO SELECT A PREDETERMINED SYMBOL AND FOR OPERATING SAID STOPPING MEANS TO MOVE THE SYMBOL HOLDER MEANS TO A PREDETERMINED POSITION, SAID STOPPING MEANS INCLUDING STOPPING ELEMENTS, SAID HOLDER MEANS COMPRISING A LEVER WHICH ABUTS AGAINST SAID ELEMENTS, ROTATION MEANS COMPRISING A CAM AND A GEAR SECTOR, SAID CAM CAUSING THE GEAR SECTOR TO TURN IN ONE DIRECTION, SAID SECTOR BEING PULLED IN AN OPPOSITE DIRECTION BY A SPRING, A PINION WHICH IS GEARED WITH SAID SECTOR BEING CONNECTED TO SAID DISC BY A UNIDIRECTIONAL CLUTCH SO AS TO TRANSMIT MOTION TO SAID DISC ONLY WHEN THE PINION IS DRIVEN BY SAID SPRING.