US PATENT SUBCLASS 400 / 284
.~ For stopping carriage in tabular position (e.g., column-set positions)

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

283  DF  CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM {11}
284.~ For stopping carriage in tabular position (e.g., column-set positions) {10}
285  DF  .~.~> In denominational positions {6}
287  DF  .~.~> Column set by control of mutilated carriage-rack
288  DF  .~.~> Column set by control of tab-rack
289  DF  .~.~> Column set by control of tap-stops or column-stops or counter-stops {1}
290  DF  .~.~> Forward or reverse tabulation
291  DF  .~.~> With impact cushion or rebound check
292  DF  .~.~> With control of carriage velocity
293  DF  .~.~> By multiple-pitch tab-racks or multilated gear
294  DF  .~.~> Stop-setting or stop-clearing mechanism {7}
298  DF  .~.~> Tab-stop or tab-rack structure, per se

DEFINITION

Classification: 400/284

For stopping carriage in tabular position (e.g., column-set positions):

(under subclass 283) Subject matter wherein the carriage* is caused to be moved in a direction that enables the character* symbols to be imprinted in succession (i.e., the character-space* direction), and wherein the movement in said direction is controlled such that after the carriage has moved past a predetermined number of character-space distances, the carriage will be stopped in a position

corresponding to a print-point* for the start of a column of character symbols.

(1) Note. The term "column" refers to a plurality of print-lines* arranged one above or below another in vertical array (i.e., a particular character of each successive line of type being equally spaced from one of the side edges of a sheet or web record-medium*).

(2) Note. The term "tabular" refers to at least one, but usually a plurality of columns each arranged in vertical array and each parallel to a side edge of a sheet or web as well as to other column(s) that are produced on the sheet or web.

(3) Note. In the typewriter of this subclass the tab-stop elements on the tab-rack* are set in active position to effect typing of a column. The typewriter is thus said to be "column set".