The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 1983
Filed:
Jan. 15, 1982
Kenneth J Henderson, Crowthorne, GB;
Bryans Southern Instruments Ltd., Mitcham, GB;
Abstract
A recording or plotting apparatus has a writing device which comprises a pen holder carrying a plurality of pens. A penholder assembly is movable from end to end of a gantry which is itself movable across a record surface such as a record sheet or card along an axis perpendicular to the axis of movement of the pen holder. Thus, for example, the gantry can move in an X-axis and the penholder can move in a Y-axis. The pen holder is provided with a plurality of writing tips supported in a rotatable turret. The turret is rotated by rotation of a ratchet provided with a plurality of ratchet teeth. The ratchet and therefore the turret is rotated when, in response to movement of the gantry or pen holder, a pawl is engaged with one of the ratchet teeth. When the gantry or pen holder is moved to disengage the pawl from the ratchet tooth the ratchet, and therefore the turret, is rotated, for example, by a defined angle of about 60.degree., to place a desired one of the pen tips in contact with the record surfaces.