Relatively movable informatory sheet and lens (e.g., reading machine, etc.):
(under subclass 804) Subject matter including structure for supporting a sheet or tape of printed, pictorial, or other informatory matter together with structure for moving or guiding movement of the sheet or tape horizontally relative to the lens, or of the lens horizontally relative to the sheet or tape for viewing different portions of the sheet or tape.
(1) Note. Class 40, Card, Picture, or Sign Exhibiting, provides for the combination of a lens broadly together with structure for supporting a card, picture, or sign relative to the lens for viewing therethrough. However, where the claims recite any optical limitations such as lens shape or forcing (as by an adjustable lens support) together with a sheet or tape support as defined above classification is in this subclass (806). Where the supporting structure presents only a portion of a line of printed matter or an entire line or limited number of lines together with provision for moving additional lines or line portions into lens view, the lens being only broadly claimed as in optical reading machines classification is in this subclass (806). Where the lens
broadly claimed is only utilized to examine or view a portion of the exhibit, there being relative movement between the lens and the exhibit classification is here in this subclass (806). Class 40 provides generally for viewing the entire single exhibit (or the entire framed portion of an exhibit which is presented for viewing as in map holders) of the card, sign or picture through the lens, with provision for changing the entire exhibit as in subclasses 446+ thereunder. Magnifiers adapted for attachment to a sheet for viewing a portion thereof are classified under subclass 804 of this class or in this subclass (806), if relative motion is provided, regardless whether the lens is claimed broadly or specifically.
SEE OR SEARCH THIS CLASS, SUBCLASS:
466+, for stereoscopic viewers.
801, for lenses relatively movable with respect to sheets and tapes together with illumination of the sheet or tape.
813, for lenses movable in the lens plane.
823, for lens mountings with axial adjustment as for focusing. SEE OR SEARCH CLASS
40, Card, Picture, or Sign Exhibiting, especially
446+, for changeable exhibitors. See also (1) Note above. See subclasses 341 and 342+ for a copy holder wherein the copy is movable relative to a viewing locus.
