Drum series printer with type members arrested by staggered stop pawls

Claim 2

A data printer comprising a plurality of type devices having spaced type characters thereon, each of said type devices having stop teeth thereon spaced to correspond with the spacing of said type characters; yieldable drive means for advancing said devices from initial positions past a printing station, stop pawl devices engageable with said teeth of respective ones of said type devices, means for actuating said stop pawls at different times to engage different ones of said teeth whereby to present different ones of said type characters to said printing station, and printing impression means for transferring an imprint on said type characters at said printing station to a record medium, the type characters and stop teeth of a first series of said type devices being spaced at a single distance from said printing station and from their respective stop pawls, and the type characters and stop teeth of a second series of said type devices being spaced at a single different distance from said printing station and from their respective stop pawls when all said type devices are in said initial positions.

Claim 3

A data printer comprising a pluraliity of type members having spaced type characters thereon, said type members having stop teeth thereon spaced the same as said type characters, yieldable drive means for advancing said type members from initial positions past a printing station, stop pawl devices engageable with said teeth of respective ones of said type members, means for actuating said stop pawls at different times to engage different ones of said teeth whereby to present different ones of said type characters to said printing station, and printing impression means for transferring an imprint from said type characters at said printing station to a record medium, the stop teeth of a first series of said type members being spaced a single distance from their respective stop pawls, and the teeth of a second series of said type members being spaced a single different distance from their respective stop pawls when said type members are in said initial positions.

Claim 4

A data printer comprising a pluraliity of type members having spaced type characters thereon, said type members having stop teeth thereon spaced the same as said type characters, yieldable drive means for advancing said type members from initial positions past a printing station, stop pawl devices engageable with said teeth of respective ones of said type members, means for actuating said stop pawls at different times to engage different ones of said teeth whereby to present different ones of said type characters to said printing station, and printing impression means for transferring an imprint from said type characters at said printing station to a record medium, the stop teeth of a first series of said type members being spaced a single distance from their respective stop pawls, and the teeth of a second series of said type members being spaced a single different distance from their respective stop pawls when said type members are in said initial positions.

Claim 5

A data printer as defined in claim 2 wherein the difference in spacing between a stop tooth on a type member of said first series and a corresponding stop tooth on a type member of said second series is less than the spacing between adjacent stop teeth on a type member of said first series.

Claim 6

A data printer as defined in claim 3 wherein said difference in spacing is one-half the spacing between said adjacent stop teeth on said type member of said first series.

Claim 7

A data printEr comprising a plurality of type devices having spaced type characters thereon, each of said type devices having stop teeth thereon spaced to correspond with the spacing of said type characters; yieldable drive means for advancing said devices from initial positions past a printing station, stop pawl devices engageable with said teeth of respective ones of said type devices, means for actuating said stop pawls at different time periods to engage different ones of said teeth whereby to present different ones of said type characters to said printing station, and printing impression means for transferring an imprint from said type characters at said printing station to a record medium, the stop teeth of a first series of said devices being spaced at a single distance from their respective stop pawls, and the stop teeth of a second series of said devices being spaced at a single different distance from their respective stop pawls when said type members are in said initial positions, said actuating means actuating said stop pawls for said first series and said second series at different times within any one of said time periods.

Claim 8

A data printEr comprising a plurality of type devices having spaced type characters thereon, each of said type devices having stop teeth thereon spaced to correspond with the spacing of said type characters; yieldable drive means for advancing said devices from initial positions past a printing station, stop pawl devices engageable with said teeth of respective ones of said type devices, means for actuating said stop pawls at different time periods to engage different ones of said teeth whereby to present different ones of said type characters to said printing station, and printing impression means for transferring an imprint from said type characters at said printing station to a record medium, the stop teeth of a first series of said devices being spaced at a single distance from their respective stop pawls, and the stop teeth of a second series of said devices being spaced at a single different distance from their respective stop pawls when said type members are in said initial positions, said actuating means actuating said stop pawls for said first series and said second series at different times within any one of said time periods.

Claim 9

A data printer as defined in claim 5 wherein said actuation of said stop pawls for said second series is delayed by an amount corresponding to the difference between the passage of a tooth of said first series past its respective stop pawl and the passage of a tooth of said second series past its respective stop pawl.

Claim 10

A data printer comprising a plurality of type members having spaced type characters thereon, said type members having stop teeth thereon spaced the same as said type characters, yieldable drive means for advancing said members from initial positions past a printing station, stop pawl devices engageable with said teeth of respective ones of said type members, means for actuating said stop pawls at different time periods to engage different ones of said teeth whereby to present different ones of said type characters to said printing station, printing impression means for transferring an imprint from said type characters at said printing station to a record medium, the stop teeth of a first series of said type members being spaced apart the same distances as stop teeth of a second series of said type members and being staggered relative to said stop teeth of said second series by an amount equal to one-half the spacing between adjacent stop teeth of one of said type members when said type members are in said initial positions, and said actuating means actuating said stop pawls of said second series later than actuation of said stop pawls of said first series by amounts corresponding to one-half the difference between passage of adjacent teeth of a said type member past its respective stop pawl.

Claim 11

A data printer comprising a plurality of type members having spaced type characters thereon, said type members having stop teeth thereon spaced the same as said type characters, yieldable drive means for advancing said members from initial positions past a printing station, stop pawl devices engageable with said teeth of respective ones of said type members, means for actuating said stop pawls at different time periods to engage different ones of said teeth whereby to present different ones of said type characters to said printing station, printing impression means for transferring an imprint from said type characters at said printing station to a record medium, the stop teeth of a first series of said type members being spaced apart the same distances as stop teeth of a second series of said type members and being staggered relative to said stop teeth of said second series by an amount equal to one-half the spacing between adjacent stop teeth of one of said type members when said type members are in said initial positions, and said actuating means actuating said stop pawls of said second series later than actuation of said stop pawls of said first series by amounts corresponding to one-half the difference between passage of adjacent teeth of a said type member past its respective stop pawl.