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公开(公告)号：US3346184A
公开(公告)日：1967-10-10
申请号：US54419766
申请日：1966-04-21
Applicant: IBM
Inventor： SCHAEFER JOHN O
IPC: F15C3/00
CPC classification number: F15C3/00 , Y10T137/8158
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2.发明授权
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公开(公告)号：US3578133A
公开(公告)日：1971-05-11
申请号：US3578133D
申请日：1969-01-15
Applicant: IBM
Inventor： SCHAEFER JOHN O
IPC: B41J20060101 , B41J5/00 , B41J5/08 , B41J5/18
CPC classification number: B41J5/08
Abstract: An encoding keyboard having individual reciprocal key-selected interposers, is constructed to eliminate the usual nonrepeat linkage while retaining the nonrepeat function. Each interposer is yieldably guided for movement within a plane, but is permitted limited lateral movement out of the plane to accomplish the nonrepeat function. Each keylever is provided with a laterally inclined cam portion. An operating interposer restores past a ''''still depressed'''' key by tilting laterally and thereby prevents an undesired second selection of the same interposer.
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公开(公告)号：US3333669A
公开(公告)日：1967-08-01
申请号：US44298865
申请日：1965-03-26
Applicant: IBM
Inventor： SCHAEFER JOHN O
IPC: B41J21/02
CPC classification number: B41J21/02 , Y10T29/49105 , Y10T29/49609 , Y10T29/49922
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Patent Agency Ranking
公开(公告)号：US3578131A
公开(公告)日：1971-05-11
申请号：US3578131D
申请日：1968-11-08
Applicant: IBM
Inventor： HEIDT WILLIAM A , PALMER LEON E , SCHAEFER JOHN O
Abstract: The writing line of a typewriter is extended by combining movements of the paper and of a type element carrier. Incremental letter feed is accomplished by movement of the type element carrier along a writing line past the paper which is normally stationary. Upon reaching an advanced position, the type element carrier is restored in the reverse direction and the paper is advanced to present the next letter space to the type element in its restored position. Continued typing advances the type element carrier incrementally to the end of the writing line. Operation of a line-return key restores the carrier directly to a new line left-hand margin position, indexes the paper to a new line and restores the paper to its original beginning-of-line position.
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公开(公告)号：US3572489A
公开(公告)日：1971-03-30
申请号：US3572489D
申请日：1968-11-08
Applicant: IBM
Inventor： SCHAEFER JOHN O
Abstract: The writing line of a moving print element typewriter is extended beyond the typewriter side frame by employing a long paper carriage and effecting conjoint opposite direction movement of the paper carriage of a print element carrier. Absolute movement of the paper carriage and the print element carrier is thus less in each case than the length of the writing line. A mechanical interconnection is employed to allow control over both movements to be obtained by controlling the movement of the print element carrier. Movement of the print position between adjacent letters is accomplished by moving the print element two-thirds of a letter space to the right and simultaneously moving the paper one-third of a letter space to the left to minimize the effective inertial loads on the system.
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公开(公告)号：US3346090A
公开(公告)日：1967-10-10
申请号：US53758866
申请日：1966-02-11
Applicant: IBM
Inventor： GOFF JR WILLIE , SCHAEFER JOHN O
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公开(公告)号：US3592309A
公开(公告)日：1971-07-13
申请号：US3592309D
申请日：1968-12-06
Applicant: IBM
Inventor： CRAFT JAMES A , SCHAEFER JOHN O
CPC classification number: B41J23/08
Abstract: A typewriter constructed to operate in sequential cycles in performing both print and functional operations is provided with a normally engaged clutch operable to interrupt a print operation after its initiation whenever nonprinting functions are selected. Mechanism is provided for restoring the partially actuated print mechanism to a preset home position prior to initiation of a subsequent typewriter cycle.
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