Checkwriter with two position prefix bar

Claim 1

IN A CHECK WRITING MACHINE, MEANS DEFINING A PRINTING LINE, A PLURALITY OF PRINTING SEGMENTS INDIVIDUALLY ADJUSTABLE FOR SELECTIVELY DISPOSING PRINTING CHARACTERS THEREOF ON THE PRINTING LINE, SAID SEGMENTS COMPRISING A FIRST GROUP AND A SECOND GROUP AND HAVING A NORMAL NONPRINTING POSITION AND ABUTMENT ELEMENTS DISPOSED ADJACENT AND IN BACK OF THE PRINTING LINE IN SAID NORMAL POSITION OF SAID ELEMENTS, OPERATING MEANS FOR EFFECTING A PRINTING OPERATION, A PREFIX BAR HAVING A FIRST NORMAL INNER POSITION EXTENDING INWARD ALONG THE PRINTING LINE IN FRONT OF THE ABUTMENT ELEMENT OF THE FIRST MEMBER IN THE NORMAL POSITION OF THE LATTER EFFECTIVE FOR RESTRAINING SAID FIRST MEMBER AGAINST MOVEMENT TO A PRINTING POSITION, SAID PREFIX BAR HAVING A SECOND OUTER POSITION CLEAR OF THE ABUTMENT ELEMENT OF SAID FIRST SEGMENT, SAID PREFIX BAR HAVING SPACED APART LATCH ENGAGEABLE MEANS THEREON CORRESPONDING TO SAID FIRST INNER AND SAID SECOND OUTER POSITIONS THEREOF, RESPECTIVELY, AND MEANS FOR SELECTIVELY ENGAGING SAID LATCH ENGAGEABLE MEANS OF SAID PREFIX BAR FOR DISPOSING IT IN EITHER OF SAID POSITIONS AND FOR MOVING IT INWARD ALONG THE PRINTING LINE INTO CONTACT WITH THE FIRST ONE OF SAID SEGMENTS THEN IN PRINTING POSITION INCIDENT TO A PRINTING OPERATION.